5b7f000ff9
This patch enables the ethertype Anti-Spoofing feature for affected devices. It is configured such that LLDP packets sent by a VF will be dropped. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9012 lines
246 KiB
C
9012 lines
246 KiB
C
/*******************************************************************************
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Intel 10 Gigabit PCI Express Linux driver
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Copyright(c) 1999 - 2014 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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Linux NICS <linux.nics@intel.com>
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/string.h>
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#include <linux/in.h>
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#include <linux/interrupt.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/sctp.h>
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#include <linux/pkt_sched.h>
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#include <linux/ipv6.h>
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#include <linux/slab.h>
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#include <net/checksum.h>
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#include <net/ip6_checksum.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/if.h>
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#include <linux/if_vlan.h>
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#include <linux/if_macvlan.h>
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#include <linux/if_bridge.h>
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#include <linux/prefetch.h>
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#include <scsi/fc/fc_fcoe.h>
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#include <net/vxlan.h>
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#ifdef CONFIG_OF
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#include <linux/of_net.h>
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#endif
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#ifdef CONFIG_SPARC
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#include <asm/idprom.h>
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#include <asm/prom.h>
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#endif
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#include "ixgbe.h"
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#include "ixgbe_common.h"
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#include "ixgbe_dcb_82599.h"
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#include "ixgbe_sriov.h"
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char ixgbe_driver_name[] = "ixgbe";
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static const char ixgbe_driver_string[] =
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"Intel(R) 10 Gigabit PCI Express Network Driver";
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#ifdef IXGBE_FCOE
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char ixgbe_default_device_descr[] =
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"Intel(R) 10 Gigabit Network Connection";
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#else
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static char ixgbe_default_device_descr[] =
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"Intel(R) 10 Gigabit Network Connection";
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#endif
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#define DRV_VERSION "4.0.1-k"
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const char ixgbe_driver_version[] = DRV_VERSION;
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static const char ixgbe_copyright[] =
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"Copyright (c) 1999-2014 Intel Corporation.";
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static const struct ixgbe_info *ixgbe_info_tbl[] = {
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[board_82598] = &ixgbe_82598_info,
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[board_82599] = &ixgbe_82599_info,
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[board_X540] = &ixgbe_X540_info,
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[board_X550] = &ixgbe_X550_info,
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[board_X550EM_x] = &ixgbe_X550EM_x_info,
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};
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/* ixgbe_pci_tbl - PCI Device ID Table
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*
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* Wildcard entries (PCI_ANY_ID) should come last
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* Last entry must be all 0s
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*
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* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
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* Class, Class Mask, private data (not used) }
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*/
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static const struct pci_device_id ixgbe_pci_tbl[] = {
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 },
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550},
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x},
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x},
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/* required last entry */
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{0, }
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};
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MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
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#ifdef CONFIG_IXGBE_DCA
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static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
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void *p);
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static struct notifier_block dca_notifier = {
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.notifier_call = ixgbe_notify_dca,
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.next = NULL,
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.priority = 0
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};
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#endif
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#ifdef CONFIG_PCI_IOV
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static unsigned int max_vfs;
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module_param(max_vfs, uint, 0);
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MODULE_PARM_DESC(max_vfs,
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"Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)");
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#endif /* CONFIG_PCI_IOV */
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static unsigned int allow_unsupported_sfp;
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module_param(allow_unsupported_sfp, uint, 0);
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MODULE_PARM_DESC(allow_unsupported_sfp,
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"Allow unsupported and untested SFP+ modules on 82599-based adapters");
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#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
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static int debug = -1;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
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MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
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MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev);
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static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
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u32 reg, u16 *value)
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{
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struct pci_dev *parent_dev;
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struct pci_bus *parent_bus;
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parent_bus = adapter->pdev->bus->parent;
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if (!parent_bus)
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return -1;
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parent_dev = parent_bus->self;
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if (!parent_dev)
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return -1;
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if (!pci_is_pcie(parent_dev))
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return -1;
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pcie_capability_read_word(parent_dev, reg, value);
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if (*value == IXGBE_FAILED_READ_CFG_WORD &&
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ixgbe_check_cfg_remove(&adapter->hw, parent_dev))
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return -1;
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return 0;
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}
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static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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u16 link_status = 0;
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int err;
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hw->bus.type = ixgbe_bus_type_pci_express;
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/* Get the negotiated link width and speed from PCI config space of the
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* parent, as this device is behind a switch
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*/
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err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status);
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/* assume caller will handle error case */
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if (err)
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return err;
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hw->bus.width = ixgbe_convert_bus_width(link_status);
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hw->bus.speed = ixgbe_convert_bus_speed(link_status);
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return 0;
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}
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/**
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* ixgbe_check_from_parent - Determine whether PCIe info should come from parent
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* @hw: hw specific details
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*
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* This function is used by probe to determine whether a device's PCI-Express
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* bandwidth details should be gathered from the parent bus instead of from the
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* device. Used to ensure that various locations all have the correct device ID
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* checks.
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*/
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static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw)
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{
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switch (hw->device_id) {
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case IXGBE_DEV_ID_82599_SFP_SF_QP:
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case IXGBE_DEV_ID_82599_QSFP_SF_QP:
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return true;
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default:
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return false;
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}
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}
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static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
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int expected_gts)
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{
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int max_gts = 0;
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enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
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enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN;
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struct pci_dev *pdev;
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/* determine whether to use the the parent device
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*/
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if (ixgbe_pcie_from_parent(&adapter->hw))
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pdev = adapter->pdev->bus->parent->self;
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else
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pdev = adapter->pdev;
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if (pcie_get_minimum_link(pdev, &speed, &width) ||
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speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN) {
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e_dev_warn("Unable to determine PCI Express bandwidth.\n");
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return;
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}
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switch (speed) {
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case PCIE_SPEED_2_5GT:
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/* 8b/10b encoding reduces max throughput by 20% */
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max_gts = 2 * width;
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break;
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case PCIE_SPEED_5_0GT:
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/* 8b/10b encoding reduces max throughput by 20% */
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max_gts = 4 * width;
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break;
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case PCIE_SPEED_8_0GT:
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/* 128b/130b encoding reduces throughput by less than 2% */
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max_gts = 8 * width;
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break;
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default:
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e_dev_warn("Unable to determine PCI Express bandwidth.\n");
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return;
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}
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e_dev_info("PCI Express bandwidth of %dGT/s available\n",
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max_gts);
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e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n",
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(speed == PCIE_SPEED_8_0GT ? "8.0GT/s" :
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speed == PCIE_SPEED_5_0GT ? "5.0GT/s" :
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speed == PCIE_SPEED_2_5GT ? "2.5GT/s" :
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"Unknown"),
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width,
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(speed == PCIE_SPEED_2_5GT ? "20%" :
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speed == PCIE_SPEED_5_0GT ? "20%" :
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speed == PCIE_SPEED_8_0GT ? "<2%" :
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"Unknown"));
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if (max_gts < expected_gts) {
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e_dev_warn("This is not sufficient for optimal performance of this card.\n");
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e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n",
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expected_gts);
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e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n");
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}
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}
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static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
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{
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if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
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!test_bit(__IXGBE_REMOVING, &adapter->state) &&
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!test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
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schedule_work(&adapter->service_task);
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}
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static void ixgbe_remove_adapter(struct ixgbe_hw *hw)
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{
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struct ixgbe_adapter *adapter = hw->back;
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if (!hw->hw_addr)
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return;
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hw->hw_addr = NULL;
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e_dev_err("Adapter removed\n");
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if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
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ixgbe_service_event_schedule(adapter);
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}
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static void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg)
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{
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u32 value;
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/* The following check not only optimizes a bit by not
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* performing a read on the status register when the
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* register just read was a status register read that
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* returned IXGBE_FAILED_READ_REG. It also blocks any
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* potential recursion.
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*/
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if (reg == IXGBE_STATUS) {
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ixgbe_remove_adapter(hw);
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return;
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}
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value = ixgbe_read_reg(hw, IXGBE_STATUS);
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if (value == IXGBE_FAILED_READ_REG)
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ixgbe_remove_adapter(hw);
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}
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/**
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* ixgbe_read_reg - Read from device register
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* @hw: hw specific details
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* @reg: offset of register to read
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*
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* Returns : value read or IXGBE_FAILED_READ_REG if removed
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*
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* This function is used to read device registers. It checks for device
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* removal by confirming any read that returns all ones by checking the
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* status register value for all ones. This function avoids reading from
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* the hardware if a removal was previously detected in which case it
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* returns IXGBE_FAILED_READ_REG (all ones).
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*/
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u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg)
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{
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u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr);
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u32 value;
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if (ixgbe_removed(reg_addr))
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return IXGBE_FAILED_READ_REG;
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value = readl(reg_addr + reg);
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if (unlikely(value == IXGBE_FAILED_READ_REG))
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ixgbe_check_remove(hw, reg);
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return value;
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}
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static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev)
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{
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u16 value;
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pci_read_config_word(pdev, PCI_VENDOR_ID, &value);
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if (value == IXGBE_FAILED_READ_CFG_WORD) {
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ixgbe_remove_adapter(hw);
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return true;
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}
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return false;
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}
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u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg)
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{
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struct ixgbe_adapter *adapter = hw->back;
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u16 value;
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if (ixgbe_removed(hw->hw_addr))
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return IXGBE_FAILED_READ_CFG_WORD;
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pci_read_config_word(adapter->pdev, reg, &value);
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if (value == IXGBE_FAILED_READ_CFG_WORD &&
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ixgbe_check_cfg_remove(hw, adapter->pdev))
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return IXGBE_FAILED_READ_CFG_WORD;
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return value;
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}
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#ifdef CONFIG_PCI_IOV
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static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg)
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{
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struct ixgbe_adapter *adapter = hw->back;
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u32 value;
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if (ixgbe_removed(hw->hw_addr))
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return IXGBE_FAILED_READ_CFG_DWORD;
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pci_read_config_dword(adapter->pdev, reg, &value);
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if (value == IXGBE_FAILED_READ_CFG_DWORD &&
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ixgbe_check_cfg_remove(hw, adapter->pdev))
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return IXGBE_FAILED_READ_CFG_DWORD;
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return value;
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}
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#endif /* CONFIG_PCI_IOV */
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void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value)
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{
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struct ixgbe_adapter *adapter = hw->back;
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if (ixgbe_removed(hw->hw_addr))
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return;
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pci_write_config_word(adapter->pdev, reg, value);
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}
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static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter)
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{
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BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state));
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/* flush memory to make sure state is correct before next watchdog */
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smp_mb__before_atomic();
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clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
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}
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struct ixgbe_reg_info {
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u32 ofs;
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char *name;
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};
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static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
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/* General Registers */
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{IXGBE_CTRL, "CTRL"},
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{IXGBE_STATUS, "STATUS"},
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{IXGBE_CTRL_EXT, "CTRL_EXT"},
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/* Interrupt Registers */
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{IXGBE_EICR, "EICR"},
|
|
|
|
/* RX Registers */
|
|
{IXGBE_SRRCTL(0), "SRRCTL"},
|
|
{IXGBE_DCA_RXCTRL(0), "DRXCTL"},
|
|
{IXGBE_RDLEN(0), "RDLEN"},
|
|
{IXGBE_RDH(0), "RDH"},
|
|
{IXGBE_RDT(0), "RDT"},
|
|
{IXGBE_RXDCTL(0), "RXDCTL"},
|
|
{IXGBE_RDBAL(0), "RDBAL"},
|
|
{IXGBE_RDBAH(0), "RDBAH"},
|
|
|
|
/* TX Registers */
|
|
{IXGBE_TDBAL(0), "TDBAL"},
|
|
{IXGBE_TDBAH(0), "TDBAH"},
|
|
{IXGBE_TDLEN(0), "TDLEN"},
|
|
{IXGBE_TDH(0), "TDH"},
|
|
{IXGBE_TDT(0), "TDT"},
|
|
{IXGBE_TXDCTL(0), "TXDCTL"},
|
|
|
|
/* List Terminator */
|
|
{ .name = NULL }
|
|
};
|
|
|
|
|
|
/*
|
|
* ixgbe_regdump - register printout routine
|
|
*/
|
|
static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
|
|
{
|
|
int i = 0, j = 0;
|
|
char rname[16];
|
|
u32 regs[64];
|
|
|
|
switch (reginfo->ofs) {
|
|
case IXGBE_SRRCTL(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
|
|
break;
|
|
case IXGBE_DCA_RXCTRL(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
|
|
break;
|
|
case IXGBE_RDLEN(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
|
|
break;
|
|
case IXGBE_RDH(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
|
|
break;
|
|
case IXGBE_RDT(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
|
|
break;
|
|
case IXGBE_RXDCTL(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
|
|
break;
|
|
case IXGBE_RDBAL(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
|
|
break;
|
|
case IXGBE_RDBAH(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
|
|
break;
|
|
case IXGBE_TDBAL(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
|
|
break;
|
|
case IXGBE_TDBAH(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
|
|
break;
|
|
case IXGBE_TDLEN(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
|
|
break;
|
|
case IXGBE_TDH(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
|
|
break;
|
|
case IXGBE_TDT(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
|
|
break;
|
|
case IXGBE_TXDCTL(0):
|
|
for (i = 0; i < 64; i++)
|
|
regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
|
|
break;
|
|
default:
|
|
pr_info("%-15s %08x\n", reginfo->name,
|
|
IXGBE_READ_REG(hw, reginfo->ofs));
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
|
|
pr_err("%-15s", rname);
|
|
for (j = 0; j < 8; j++)
|
|
pr_cont(" %08x", regs[i*8+j]);
|
|
pr_cont("\n");
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* ixgbe_dump - Print registers, tx-rings and rx-rings
|
|
*/
|
|
static void ixgbe_dump(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct ixgbe_reg_info *reginfo;
|
|
int n = 0;
|
|
struct ixgbe_ring *tx_ring;
|
|
struct ixgbe_tx_buffer *tx_buffer;
|
|
union ixgbe_adv_tx_desc *tx_desc;
|
|
struct my_u0 { u64 a; u64 b; } *u0;
|
|
struct ixgbe_ring *rx_ring;
|
|
union ixgbe_adv_rx_desc *rx_desc;
|
|
struct ixgbe_rx_buffer *rx_buffer_info;
|
|
u32 staterr;
|
|
int i = 0;
|
|
|
|
if (!netif_msg_hw(adapter))
|
|
return;
|
|
|
|
/* Print netdevice Info */
|
|
if (netdev) {
|
|
dev_info(&adapter->pdev->dev, "Net device Info\n");
|
|
pr_info("Device Name state "
|
|
"trans_start last_rx\n");
|
|
pr_info("%-15s %016lX %016lX %016lX\n",
|
|
netdev->name,
|
|
netdev->state,
|
|
netdev->trans_start,
|
|
netdev->last_rx);
|
|
}
|
|
|
|
/* Print Registers */
|
|
dev_info(&adapter->pdev->dev, "Register Dump\n");
|
|
pr_info(" Register Name Value\n");
|
|
for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
|
|
reginfo->name; reginfo++) {
|
|
ixgbe_regdump(hw, reginfo);
|
|
}
|
|
|
|
/* Print TX Ring Summary */
|
|
if (!netdev || !netif_running(netdev))
|
|
return;
|
|
|
|
dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
|
|
pr_info(" %s %s %s %s\n",
|
|
"Queue [NTU] [NTC] [bi(ntc)->dma ]",
|
|
"leng", "ntw", "timestamp");
|
|
for (n = 0; n < adapter->num_tx_queues; n++) {
|
|
tx_ring = adapter->tx_ring[n];
|
|
tx_buffer = &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
|
|
pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n",
|
|
n, tx_ring->next_to_use, tx_ring->next_to_clean,
|
|
(u64)dma_unmap_addr(tx_buffer, dma),
|
|
dma_unmap_len(tx_buffer, len),
|
|
tx_buffer->next_to_watch,
|
|
(u64)tx_buffer->time_stamp);
|
|
}
|
|
|
|
/* Print TX Rings */
|
|
if (!netif_msg_tx_done(adapter))
|
|
goto rx_ring_summary;
|
|
|
|
dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
|
|
|
|
/* Transmit Descriptor Formats
|
|
*
|
|
* 82598 Advanced Transmit Descriptor
|
|
* +--------------------------------------------------------------+
|
|
* 0 | Buffer Address [63:0] |
|
|
* +--------------------------------------------------------------+
|
|
* 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
|
|
* +--------------------------------------------------------------+
|
|
* 63 46 45 40 39 36 35 32 31 24 23 20 19 0
|
|
*
|
|
* 82598 Advanced Transmit Descriptor (Write-Back Format)
|
|
* +--------------------------------------------------------------+
|
|
* 0 | RSV [63:0] |
|
|
* +--------------------------------------------------------------+
|
|
* 8 | RSV | STA | NXTSEQ |
|
|
* +--------------------------------------------------------------+
|
|
* 63 36 35 32 31 0
|
|
*
|
|
* 82599+ Advanced Transmit Descriptor
|
|
* +--------------------------------------------------------------+
|
|
* 0 | Buffer Address [63:0] |
|
|
* +--------------------------------------------------------------+
|
|
* 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN |
|
|
* +--------------------------------------------------------------+
|
|
* 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0
|
|
*
|
|
* 82599+ Advanced Transmit Descriptor (Write-Back Format)
|
|
* +--------------------------------------------------------------+
|
|
* 0 | RSV [63:0] |
|
|
* +--------------------------------------------------------------+
|
|
* 8 | RSV | STA | RSV |
|
|
* +--------------------------------------------------------------+
|
|
* 63 36 35 32 31 0
|
|
*/
|
|
|
|
for (n = 0; n < adapter->num_tx_queues; n++) {
|
|
tx_ring = adapter->tx_ring[n];
|
|
pr_info("------------------------------------\n");
|
|
pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
|
|
pr_info("------------------------------------\n");
|
|
pr_info("%s%s %s %s %s %s\n",
|
|
"T [desc] [address 63:0 ] ",
|
|
"[PlPOIdStDDt Ln] [bi->dma ] ",
|
|
"leng", "ntw", "timestamp", "bi->skb");
|
|
|
|
for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, i);
|
|
tx_buffer = &tx_ring->tx_buffer_info[i];
|
|
u0 = (struct my_u0 *)tx_desc;
|
|
if (dma_unmap_len(tx_buffer, len) > 0) {
|
|
pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p",
|
|
i,
|
|
le64_to_cpu(u0->a),
|
|
le64_to_cpu(u0->b),
|
|
(u64)dma_unmap_addr(tx_buffer, dma),
|
|
dma_unmap_len(tx_buffer, len),
|
|
tx_buffer->next_to_watch,
|
|
(u64)tx_buffer->time_stamp,
|
|
tx_buffer->skb);
|
|
if (i == tx_ring->next_to_use &&
|
|
i == tx_ring->next_to_clean)
|
|
pr_cont(" NTC/U\n");
|
|
else if (i == tx_ring->next_to_use)
|
|
pr_cont(" NTU\n");
|
|
else if (i == tx_ring->next_to_clean)
|
|
pr_cont(" NTC\n");
|
|
else
|
|
pr_cont("\n");
|
|
|
|
if (netif_msg_pktdata(adapter) &&
|
|
tx_buffer->skb)
|
|
print_hex_dump(KERN_INFO, "",
|
|
DUMP_PREFIX_ADDRESS, 16, 1,
|
|
tx_buffer->skb->data,
|
|
dma_unmap_len(tx_buffer, len),
|
|
true);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Print RX Rings Summary */
|
|
rx_ring_summary:
|
|
dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
|
|
pr_info("Queue [NTU] [NTC]\n");
|
|
for (n = 0; n < adapter->num_rx_queues; n++) {
|
|
rx_ring = adapter->rx_ring[n];
|
|
pr_info("%5d %5X %5X\n",
|
|
n, rx_ring->next_to_use, rx_ring->next_to_clean);
|
|
}
|
|
|
|
/* Print RX Rings */
|
|
if (!netif_msg_rx_status(adapter))
|
|
return;
|
|
|
|
dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
|
|
|
|
/* Receive Descriptor Formats
|
|
*
|
|
* 82598 Advanced Receive Descriptor (Read) Format
|
|
* 63 1 0
|
|
* +-----------------------------------------------------+
|
|
* 0 | Packet Buffer Address [63:1] |A0/NSE|
|
|
* +----------------------------------------------+------+
|
|
* 8 | Header Buffer Address [63:1] | DD |
|
|
* +-----------------------------------------------------+
|
|
*
|
|
*
|
|
* 82598 Advanced Receive Descriptor (Write-Back) Format
|
|
*
|
|
* 63 48 47 32 31 30 21 20 16 15 4 3 0
|
|
* +------------------------------------------------------+
|
|
* 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS |
|
|
* | Packet | IP | | | | Type | Type |
|
|
* | Checksum | Ident | | | | | |
|
|
* +------------------------------------------------------+
|
|
* 8 | VLAN Tag | Length | Extended Error | Extended Status |
|
|
* +------------------------------------------------------+
|
|
* 63 48 47 32 31 20 19 0
|
|
*
|
|
* 82599+ Advanced Receive Descriptor (Read) Format
|
|
* 63 1 0
|
|
* +-----------------------------------------------------+
|
|
* 0 | Packet Buffer Address [63:1] |A0/NSE|
|
|
* +----------------------------------------------+------+
|
|
* 8 | Header Buffer Address [63:1] | DD |
|
|
* +-----------------------------------------------------+
|
|
*
|
|
*
|
|
* 82599+ Advanced Receive Descriptor (Write-Back) Format
|
|
*
|
|
* 63 48 47 32 31 30 21 20 17 16 4 3 0
|
|
* +------------------------------------------------------+
|
|
* 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS |
|
|
* |/ RTT / PCoE_PARAM | | | CNT | Type | Type |
|
|
* |/ Flow Dir Flt ID | | | | | |
|
|
* +------------------------------------------------------+
|
|
* 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP |
|
|
* +------------------------------------------------------+
|
|
* 63 48 47 32 31 20 19 0
|
|
*/
|
|
|
|
for (n = 0; n < adapter->num_rx_queues; n++) {
|
|
rx_ring = adapter->rx_ring[n];
|
|
pr_info("------------------------------------\n");
|
|
pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
|
|
pr_info("------------------------------------\n");
|
|
pr_info("%s%s%s",
|
|
"R [desc] [ PktBuf A0] ",
|
|
"[ HeadBuf DD] [bi->dma ] [bi->skb ] ",
|
|
"<-- Adv Rx Read format\n");
|
|
pr_info("%s%s%s",
|
|
"RWB[desc] [PcsmIpSHl PtRs] ",
|
|
"[vl er S cks ln] ---------------- [bi->skb ] ",
|
|
"<-- Adv Rx Write-Back format\n");
|
|
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
rx_buffer_info = &rx_ring->rx_buffer_info[i];
|
|
rx_desc = IXGBE_RX_DESC(rx_ring, i);
|
|
u0 = (struct my_u0 *)rx_desc;
|
|
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
if (staterr & IXGBE_RXD_STAT_DD) {
|
|
/* Descriptor Done */
|
|
pr_info("RWB[0x%03X] %016llX "
|
|
"%016llX ---------------- %p", i,
|
|
le64_to_cpu(u0->a),
|
|
le64_to_cpu(u0->b),
|
|
rx_buffer_info->skb);
|
|
} else {
|
|
pr_info("R [0x%03X] %016llX "
|
|
"%016llX %016llX %p", i,
|
|
le64_to_cpu(u0->a),
|
|
le64_to_cpu(u0->b),
|
|
(u64)rx_buffer_info->dma,
|
|
rx_buffer_info->skb);
|
|
|
|
if (netif_msg_pktdata(adapter) &&
|
|
rx_buffer_info->dma) {
|
|
print_hex_dump(KERN_INFO, "",
|
|
DUMP_PREFIX_ADDRESS, 16, 1,
|
|
page_address(rx_buffer_info->page) +
|
|
rx_buffer_info->page_offset,
|
|
ixgbe_rx_bufsz(rx_ring), true);
|
|
}
|
|
}
|
|
|
|
if (i == rx_ring->next_to_use)
|
|
pr_cont(" NTU\n");
|
|
else if (i == rx_ring->next_to_clean)
|
|
pr_cont(" NTC\n");
|
|
else
|
|
pr_cont("\n");
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
|
|
{
|
|
u32 ctrl_ext;
|
|
|
|
/* Let firmware take over control of h/w */
|
|
ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
|
|
ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
|
|
}
|
|
|
|
static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
|
|
{
|
|
u32 ctrl_ext;
|
|
|
|
/* Let firmware know the driver has taken over */
|
|
ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
|
|
ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
|
|
* @adapter: pointer to adapter struct
|
|
* @direction: 0 for Rx, 1 for Tx, -1 for other causes
|
|
* @queue: queue to map the corresponding interrupt to
|
|
* @msix_vector: the vector to map to the corresponding queue
|
|
*
|
|
*/
|
|
static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
|
|
u8 queue, u8 msix_vector)
|
|
{
|
|
u32 ivar, index;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
msix_vector |= IXGBE_IVAR_ALLOC_VAL;
|
|
if (direction == -1)
|
|
direction = 0;
|
|
index = (((direction * 64) + queue) >> 2) & 0x1F;
|
|
ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
|
|
ivar &= ~(0xFF << (8 * (queue & 0x3)));
|
|
ivar |= (msix_vector << (8 * (queue & 0x3)));
|
|
IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
if (direction == -1) {
|
|
/* other causes */
|
|
msix_vector |= IXGBE_IVAR_ALLOC_VAL;
|
|
index = ((queue & 1) * 8);
|
|
ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
|
|
ivar &= ~(0xFF << index);
|
|
ivar |= (msix_vector << index);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
|
|
break;
|
|
} else {
|
|
/* tx or rx causes */
|
|
msix_vector |= IXGBE_IVAR_ALLOC_VAL;
|
|
index = ((16 * (queue & 1)) + (8 * direction));
|
|
ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
|
|
ivar &= ~(0xFF << index);
|
|
ivar |= (msix_vector << index);
|
|
IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
|
|
u64 qmask)
|
|
{
|
|
u32 mask;
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
mask = (qmask & 0xFFFFFFFF);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
|
|
mask = (qmask >> 32);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *ring,
|
|
struct ixgbe_tx_buffer *tx_buffer)
|
|
{
|
|
if (tx_buffer->skb) {
|
|
dev_kfree_skb_any(tx_buffer->skb);
|
|
if (dma_unmap_len(tx_buffer, len))
|
|
dma_unmap_single(ring->dev,
|
|
dma_unmap_addr(tx_buffer, dma),
|
|
dma_unmap_len(tx_buffer, len),
|
|
DMA_TO_DEVICE);
|
|
} else if (dma_unmap_len(tx_buffer, len)) {
|
|
dma_unmap_page(ring->dev,
|
|
dma_unmap_addr(tx_buffer, dma),
|
|
dma_unmap_len(tx_buffer, len),
|
|
DMA_TO_DEVICE);
|
|
}
|
|
tx_buffer->next_to_watch = NULL;
|
|
tx_buffer->skb = NULL;
|
|
dma_unmap_len_set(tx_buffer, len, 0);
|
|
/* tx_buffer must be completely set up in the transmit path */
|
|
}
|
|
|
|
static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct ixgbe_hw_stats *hwstats = &adapter->stats;
|
|
int i;
|
|
u32 data;
|
|
|
|
if ((hw->fc.current_mode != ixgbe_fc_full) &&
|
|
(hw->fc.current_mode != ixgbe_fc_rx_pause))
|
|
return;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
|
|
break;
|
|
default:
|
|
data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
|
|
}
|
|
hwstats->lxoffrxc += data;
|
|
|
|
/* refill credits (no tx hang) if we received xoff */
|
|
if (!data)
|
|
return;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
clear_bit(__IXGBE_HANG_CHECK_ARMED,
|
|
&adapter->tx_ring[i]->state);
|
|
}
|
|
|
|
static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct ixgbe_hw_stats *hwstats = &adapter->stats;
|
|
u32 xoff[8] = {0};
|
|
u8 tc;
|
|
int i;
|
|
bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
|
|
|
|
if (adapter->ixgbe_ieee_pfc)
|
|
pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) {
|
|
ixgbe_update_xoff_rx_lfc(adapter);
|
|
return;
|
|
}
|
|
|
|
/* update stats for each tc, only valid with PFC enabled */
|
|
for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
|
|
u32 pxoffrxc;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
|
|
break;
|
|
default:
|
|
pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
|
|
}
|
|
hwstats->pxoffrxc[i] += pxoffrxc;
|
|
/* Get the TC for given UP */
|
|
tc = netdev_get_prio_tc_map(adapter->netdev, i);
|
|
xoff[tc] += pxoffrxc;
|
|
}
|
|
|
|
/* disarm tx queues that have received xoff frames */
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
|
|
|
|
tc = tx_ring->dcb_tc;
|
|
if (xoff[tc])
|
|
clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
|
|
}
|
|
}
|
|
|
|
static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring)
|
|
{
|
|
return ring->stats.packets;
|
|
}
|
|
|
|
static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_adapter *adapter;
|
|
struct ixgbe_hw *hw;
|
|
u32 head, tail;
|
|
|
|
if (ring->l2_accel_priv)
|
|
adapter = ring->l2_accel_priv->real_adapter;
|
|
else
|
|
adapter = netdev_priv(ring->netdev);
|
|
|
|
hw = &adapter->hw;
|
|
head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx));
|
|
tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx));
|
|
|
|
if (head != tail)
|
|
return (head < tail) ?
|
|
tail - head : (tail + ring->count - head);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring)
|
|
{
|
|
u32 tx_done = ixgbe_get_tx_completed(tx_ring);
|
|
u32 tx_done_old = tx_ring->tx_stats.tx_done_old;
|
|
u32 tx_pending = ixgbe_get_tx_pending(tx_ring);
|
|
|
|
clear_check_for_tx_hang(tx_ring);
|
|
|
|
/*
|
|
* Check for a hung queue, but be thorough. This verifies
|
|
* that a transmit has been completed since the previous
|
|
* check AND there is at least one packet pending. The
|
|
* ARMED bit is set to indicate a potential hang. The
|
|
* bit is cleared if a pause frame is received to remove
|
|
* false hang detection due to PFC or 802.3x frames. By
|
|
* requiring this to fail twice we avoid races with
|
|
* pfc clearing the ARMED bit and conditions where we
|
|
* run the check_tx_hang logic with a transmit completion
|
|
* pending but without time to complete it yet.
|
|
*/
|
|
if (tx_done_old == tx_done && tx_pending)
|
|
/* make sure it is true for two checks in a row */
|
|
return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED,
|
|
&tx_ring->state);
|
|
/* update completed stats and continue */
|
|
tx_ring->tx_stats.tx_done_old = tx_done;
|
|
/* reset the countdown */
|
|
clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
|
|
* @adapter: driver private struct
|
|
**/
|
|
static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
|
|
{
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
|
|
adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
|
|
e_warn(drv, "initiating reset due to tx timeout\n");
|
|
ixgbe_service_event_schedule(adapter);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clean_tx_irq - Reclaim resources after transmit completes
|
|
* @q_vector: structure containing interrupt and ring information
|
|
* @tx_ring: tx ring to clean
|
|
**/
|
|
static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
|
|
struct ixgbe_ring *tx_ring)
|
|
{
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
struct ixgbe_tx_buffer *tx_buffer;
|
|
union ixgbe_adv_tx_desc *tx_desc;
|
|
unsigned int total_bytes = 0, total_packets = 0;
|
|
unsigned int budget = q_vector->tx.work_limit;
|
|
unsigned int i = tx_ring->next_to_clean;
|
|
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state))
|
|
return true;
|
|
|
|
tx_buffer = &tx_ring->tx_buffer_info[i];
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, i);
|
|
i -= tx_ring->count;
|
|
|
|
do {
|
|
union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
|
|
|
|
/* if next_to_watch is not set then there is no work pending */
|
|
if (!eop_desc)
|
|
break;
|
|
|
|
/* prevent any other reads prior to eop_desc */
|
|
read_barrier_depends();
|
|
|
|
/* if DD is not set pending work has not been completed */
|
|
if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)))
|
|
break;
|
|
|
|
/* clear next_to_watch to prevent false hangs */
|
|
tx_buffer->next_to_watch = NULL;
|
|
|
|
/* update the statistics for this packet */
|
|
total_bytes += tx_buffer->bytecount;
|
|
total_packets += tx_buffer->gso_segs;
|
|
|
|
/* free the skb */
|
|
dev_consume_skb_any(tx_buffer->skb);
|
|
|
|
/* unmap skb header data */
|
|
dma_unmap_single(tx_ring->dev,
|
|
dma_unmap_addr(tx_buffer, dma),
|
|
dma_unmap_len(tx_buffer, len),
|
|
DMA_TO_DEVICE);
|
|
|
|
/* clear tx_buffer data */
|
|
tx_buffer->skb = NULL;
|
|
dma_unmap_len_set(tx_buffer, len, 0);
|
|
|
|
/* unmap remaining buffers */
|
|
while (tx_desc != eop_desc) {
|
|
tx_buffer++;
|
|
tx_desc++;
|
|
i++;
|
|
if (unlikely(!i)) {
|
|
i -= tx_ring->count;
|
|
tx_buffer = tx_ring->tx_buffer_info;
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, 0);
|
|
}
|
|
|
|
/* unmap any remaining paged data */
|
|
if (dma_unmap_len(tx_buffer, len)) {
|
|
dma_unmap_page(tx_ring->dev,
|
|
dma_unmap_addr(tx_buffer, dma),
|
|
dma_unmap_len(tx_buffer, len),
|
|
DMA_TO_DEVICE);
|
|
dma_unmap_len_set(tx_buffer, len, 0);
|
|
}
|
|
}
|
|
|
|
/* move us one more past the eop_desc for start of next pkt */
|
|
tx_buffer++;
|
|
tx_desc++;
|
|
i++;
|
|
if (unlikely(!i)) {
|
|
i -= tx_ring->count;
|
|
tx_buffer = tx_ring->tx_buffer_info;
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, 0);
|
|
}
|
|
|
|
/* issue prefetch for next Tx descriptor */
|
|
prefetch(tx_desc);
|
|
|
|
/* update budget accounting */
|
|
budget--;
|
|
} while (likely(budget));
|
|
|
|
i += tx_ring->count;
|
|
tx_ring->next_to_clean = i;
|
|
u64_stats_update_begin(&tx_ring->syncp);
|
|
tx_ring->stats.bytes += total_bytes;
|
|
tx_ring->stats.packets += total_packets;
|
|
u64_stats_update_end(&tx_ring->syncp);
|
|
q_vector->tx.total_bytes += total_bytes;
|
|
q_vector->tx.total_packets += total_packets;
|
|
|
|
if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
|
|
/* schedule immediate reset if we believe we hung */
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
e_err(drv, "Detected Tx Unit Hang\n"
|
|
" Tx Queue <%d>\n"
|
|
" TDH, TDT <%x>, <%x>\n"
|
|
" next_to_use <%x>\n"
|
|
" next_to_clean <%x>\n"
|
|
"tx_buffer_info[next_to_clean]\n"
|
|
" time_stamp <%lx>\n"
|
|
" jiffies <%lx>\n",
|
|
tx_ring->queue_index,
|
|
IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
|
|
IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
|
|
tx_ring->next_to_use, i,
|
|
tx_ring->tx_buffer_info[i].time_stamp, jiffies);
|
|
|
|
netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
|
|
|
|
e_info(probe,
|
|
"tx hang %d detected on queue %d, resetting adapter\n",
|
|
adapter->tx_timeout_count + 1, tx_ring->queue_index);
|
|
|
|
/* schedule immediate reset if we believe we hung */
|
|
ixgbe_tx_timeout_reset(adapter);
|
|
|
|
/* the adapter is about to reset, no point in enabling stuff */
|
|
return true;
|
|
}
|
|
|
|
netdev_tx_completed_queue(txring_txq(tx_ring),
|
|
total_packets, total_bytes);
|
|
|
|
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
|
|
if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) &&
|
|
(ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
|
|
/* Make sure that anybody stopping the queue after this
|
|
* sees the new next_to_clean.
|
|
*/
|
|
smp_mb();
|
|
if (__netif_subqueue_stopped(tx_ring->netdev,
|
|
tx_ring->queue_index)
|
|
&& !test_bit(__IXGBE_DOWN, &adapter->state)) {
|
|
netif_wake_subqueue(tx_ring->netdev,
|
|
tx_ring->queue_index);
|
|
++tx_ring->tx_stats.restart_queue;
|
|
}
|
|
}
|
|
|
|
return !!budget;
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *tx_ring,
|
|
int cpu)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 txctrl = dca3_get_tag(tx_ring->dev, cpu);
|
|
u16 reg_offset;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx);
|
|
txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599;
|
|
break;
|
|
default:
|
|
/* for unknown hardware do not write register */
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We can enable relaxed ordering for reads, but not writes when
|
|
* DCA is enabled. This is due to a known issue in some chipsets
|
|
* which will cause the DCA tag to be cleared.
|
|
*/
|
|
txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN |
|
|
IXGBE_DCA_TXCTRL_DATA_RRO_EN |
|
|
IXGBE_DCA_TXCTRL_DESC_DCA_EN;
|
|
|
|
IXGBE_WRITE_REG(hw, reg_offset, txctrl);
|
|
}
|
|
|
|
static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *rx_ring,
|
|
int cpu)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 rxctrl = dca3_get_tag(rx_ring->dev, cpu);
|
|
u8 reg_idx = rx_ring->reg_idx;
|
|
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We can enable relaxed ordering for reads, but not writes when
|
|
* DCA is enabled. This is due to a known issue in some chipsets
|
|
* which will cause the DCA tag to be cleared.
|
|
*/
|
|
rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN |
|
|
IXGBE_DCA_RXCTRL_DESC_DCA_EN;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl);
|
|
}
|
|
|
|
static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
|
|
{
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
struct ixgbe_ring *ring;
|
|
int cpu = get_cpu();
|
|
|
|
if (q_vector->cpu == cpu)
|
|
goto out_no_update;
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->tx)
|
|
ixgbe_update_tx_dca(adapter, ring, cpu);
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->rx)
|
|
ixgbe_update_rx_dca(adapter, ring, cpu);
|
|
|
|
q_vector->cpu = cpu;
|
|
out_no_update:
|
|
put_cpu();
|
|
}
|
|
|
|
static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
|
|
return;
|
|
|
|
/* always use CB2 mode, difference is masked in the CB driver */
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
|
|
|
|
for (i = 0; i < adapter->num_q_vectors; i++) {
|
|
adapter->q_vector[i]->cpu = -1;
|
|
ixgbe_update_dca(adapter->q_vector[i]);
|
|
}
|
|
}
|
|
|
|
static int __ixgbe_notify_dca(struct device *dev, void *data)
|
|
{
|
|
struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
|
|
unsigned long event = *(unsigned long *)data;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE))
|
|
return 0;
|
|
|
|
switch (event) {
|
|
case DCA_PROVIDER_ADD:
|
|
/* if we're already enabled, don't do it again */
|
|
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
|
|
break;
|
|
if (dca_add_requester(dev) == 0) {
|
|
adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
|
|
ixgbe_setup_dca(adapter);
|
|
break;
|
|
}
|
|
/* Fall Through since DCA is disabled. */
|
|
case DCA_PROVIDER_REMOVE:
|
|
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
|
|
dca_remove_requester(dev);
|
|
adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_IXGBE_DCA */
|
|
static inline void ixgbe_rx_hash(struct ixgbe_ring *ring,
|
|
union ixgbe_adv_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
if (ring->netdev->features & NETIF_F_RXHASH)
|
|
skb_set_hash(skb,
|
|
le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
|
|
PKT_HASH_TYPE_L3);
|
|
}
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/**
|
|
* ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
|
|
* @ring: structure containing ring specific data
|
|
* @rx_desc: advanced rx descriptor
|
|
*
|
|
* Returns : true if it is FCoE pkt
|
|
*/
|
|
static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring,
|
|
union ixgbe_adv_rx_desc *rx_desc)
|
|
{
|
|
__le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
|
|
|
|
return test_bit(__IXGBE_RX_FCOE, &ring->state) &&
|
|
((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) ==
|
|
(cpu_to_le16(IXGBE_ETQF_FILTER_FCOE <<
|
|
IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT)));
|
|
}
|
|
|
|
#endif /* IXGBE_FCOE */
|
|
/**
|
|
* ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
|
|
* @ring: structure containing ring specific data
|
|
* @rx_desc: current Rx descriptor being processed
|
|
* @skb: skb currently being received and modified
|
|
**/
|
|
static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
|
|
union ixgbe_adv_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
__le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
|
|
__le16 hdr_info = rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
|
|
bool encap_pkt = false;
|
|
|
|
skb_checksum_none_assert(skb);
|
|
|
|
/* Rx csum disabled */
|
|
if (!(ring->netdev->features & NETIF_F_RXCSUM))
|
|
return;
|
|
|
|
if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) &&
|
|
(hdr_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_TUNNEL >> 16))) {
|
|
encap_pkt = true;
|
|
skb->encapsulation = 1;
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
}
|
|
|
|
/* if IP and error */
|
|
if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) &&
|
|
ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) {
|
|
ring->rx_stats.csum_err++;
|
|
return;
|
|
}
|
|
|
|
if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS))
|
|
return;
|
|
|
|
if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) {
|
|
/*
|
|
* 82599 errata, UDP frames with a 0 checksum can be marked as
|
|
* checksum errors.
|
|
*/
|
|
if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) &&
|
|
test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state))
|
|
return;
|
|
|
|
ring->rx_stats.csum_err++;
|
|
return;
|
|
}
|
|
|
|
/* It must be a TCP or UDP packet with a valid checksum */
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
if (encap_pkt) {
|
|
if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS))
|
|
return;
|
|
|
|
if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) {
|
|
ring->rx_stats.csum_err++;
|
|
return;
|
|
}
|
|
/* If we checked the outer header let the stack know */
|
|
skb->csum_level = 1;
|
|
}
|
|
}
|
|
|
|
static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring,
|
|
struct ixgbe_rx_buffer *bi)
|
|
{
|
|
struct page *page = bi->page;
|
|
dma_addr_t dma;
|
|
|
|
/* since we are recycling buffers we should seldom need to alloc */
|
|
if (likely(page))
|
|
return true;
|
|
|
|
/* alloc new page for storage */
|
|
page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring));
|
|
if (unlikely(!page)) {
|
|
rx_ring->rx_stats.alloc_rx_page_failed++;
|
|
return false;
|
|
}
|
|
|
|
/* map page for use */
|
|
dma = dma_map_page(rx_ring->dev, page, 0,
|
|
ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
|
|
|
|
/*
|
|
* if mapping failed free memory back to system since
|
|
* there isn't much point in holding memory we can't use
|
|
*/
|
|
if (dma_mapping_error(rx_ring->dev, dma)) {
|
|
__free_pages(page, ixgbe_rx_pg_order(rx_ring));
|
|
|
|
rx_ring->rx_stats.alloc_rx_page_failed++;
|
|
return false;
|
|
}
|
|
|
|
bi->dma = dma;
|
|
bi->page = page;
|
|
bi->page_offset = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_alloc_rx_buffers - Replace used receive buffers
|
|
* @rx_ring: ring to place buffers on
|
|
* @cleaned_count: number of buffers to replace
|
|
**/
|
|
void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
|
|
{
|
|
union ixgbe_adv_rx_desc *rx_desc;
|
|
struct ixgbe_rx_buffer *bi;
|
|
u16 i = rx_ring->next_to_use;
|
|
|
|
/* nothing to do */
|
|
if (!cleaned_count)
|
|
return;
|
|
|
|
rx_desc = IXGBE_RX_DESC(rx_ring, i);
|
|
bi = &rx_ring->rx_buffer_info[i];
|
|
i -= rx_ring->count;
|
|
|
|
do {
|
|
if (!ixgbe_alloc_mapped_page(rx_ring, bi))
|
|
break;
|
|
|
|
/*
|
|
* Refresh the desc even if buffer_addrs didn't change
|
|
* because each write-back erases this info.
|
|
*/
|
|
rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
|
|
|
|
rx_desc++;
|
|
bi++;
|
|
i++;
|
|
if (unlikely(!i)) {
|
|
rx_desc = IXGBE_RX_DESC(rx_ring, 0);
|
|
bi = rx_ring->rx_buffer_info;
|
|
i -= rx_ring->count;
|
|
}
|
|
|
|
/* clear the status bits for the next_to_use descriptor */
|
|
rx_desc->wb.upper.status_error = 0;
|
|
|
|
cleaned_count--;
|
|
} while (cleaned_count);
|
|
|
|
i += rx_ring->count;
|
|
|
|
if (rx_ring->next_to_use != i) {
|
|
rx_ring->next_to_use = i;
|
|
|
|
/* update next to alloc since we have filled the ring */
|
|
rx_ring->next_to_alloc = i;
|
|
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64).
|
|
*/
|
|
wmb();
|
|
writel(i, rx_ring->tail);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
u16 hdr_len = skb_headlen(skb);
|
|
|
|
/* set gso_size to avoid messing up TCP MSS */
|
|
skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len),
|
|
IXGBE_CB(skb)->append_cnt);
|
|
skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
|
|
}
|
|
|
|
static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
/* if append_cnt is 0 then frame is not RSC */
|
|
if (!IXGBE_CB(skb)->append_cnt)
|
|
return;
|
|
|
|
rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt;
|
|
rx_ring->rx_stats.rsc_flush++;
|
|
|
|
ixgbe_set_rsc_gso_size(rx_ring, skb);
|
|
|
|
/* gso_size is computed using append_cnt so always clear it last */
|
|
IXGBE_CB(skb)->append_cnt = 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
|
|
* @rx_ring: rx descriptor ring packet is being transacted on
|
|
* @rx_desc: pointer to the EOP Rx descriptor
|
|
* @skb: pointer to current skb being populated
|
|
*
|
|
* This function checks the ring, descriptor, and packet information in
|
|
* order to populate the hash, checksum, VLAN, timestamp, protocol, and
|
|
* other fields within the skb.
|
|
**/
|
|
static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
|
|
union ixgbe_adv_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct net_device *dev = rx_ring->netdev;
|
|
|
|
ixgbe_update_rsc_stats(rx_ring, skb);
|
|
|
|
ixgbe_rx_hash(rx_ring, rx_desc, skb);
|
|
|
|
ixgbe_rx_checksum(rx_ring, rx_desc, skb);
|
|
|
|
if (unlikely(ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_TS)))
|
|
ixgbe_ptp_rx_hwtstamp(rx_ring->q_vector->adapter, skb);
|
|
|
|
if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
|
|
ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
|
|
u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
|
|
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
|
|
}
|
|
|
|
skb_record_rx_queue(skb, rx_ring->queue_index);
|
|
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
}
|
|
|
|
static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
|
|
if (ixgbe_qv_busy_polling(q_vector))
|
|
netif_receive_skb(skb);
|
|
else if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
|
|
napi_gro_receive(&q_vector->napi, skb);
|
|
else
|
|
netif_rx(skb);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_is_non_eop - process handling of non-EOP buffers
|
|
* @rx_ring: Rx ring being processed
|
|
* @rx_desc: Rx descriptor for current buffer
|
|
* @skb: Current socket buffer containing buffer in progress
|
|
*
|
|
* This function updates next to clean. If the buffer is an EOP buffer
|
|
* this function exits returning false, otherwise it will place the
|
|
* sk_buff in the next buffer to be chained and return true indicating
|
|
* that this is in fact a non-EOP buffer.
|
|
**/
|
|
static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring,
|
|
union ixgbe_adv_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
u32 ntc = rx_ring->next_to_clean + 1;
|
|
|
|
/* fetch, update, and store next to clean */
|
|
ntc = (ntc < rx_ring->count) ? ntc : 0;
|
|
rx_ring->next_to_clean = ntc;
|
|
|
|
prefetch(IXGBE_RX_DESC(rx_ring, ntc));
|
|
|
|
/* update RSC append count if present */
|
|
if (ring_is_rsc_enabled(rx_ring)) {
|
|
__le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data &
|
|
cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK);
|
|
|
|
if (unlikely(rsc_enabled)) {
|
|
u32 rsc_cnt = le32_to_cpu(rsc_enabled);
|
|
|
|
rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT;
|
|
IXGBE_CB(skb)->append_cnt += rsc_cnt - 1;
|
|
|
|
/* update ntc based on RSC value */
|
|
ntc = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
ntc &= IXGBE_RXDADV_NEXTP_MASK;
|
|
ntc >>= IXGBE_RXDADV_NEXTP_SHIFT;
|
|
}
|
|
}
|
|
|
|
/* if we are the last buffer then there is nothing else to do */
|
|
if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
|
|
return false;
|
|
|
|
/* place skb in next buffer to be received */
|
|
rx_ring->rx_buffer_info[ntc].skb = skb;
|
|
rx_ring->rx_stats.non_eop_descs++;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_pull_tail - ixgbe specific version of skb_pull_tail
|
|
* @rx_ring: rx descriptor ring packet is being transacted on
|
|
* @skb: pointer to current skb being adjusted
|
|
*
|
|
* This function is an ixgbe specific version of __pskb_pull_tail. The
|
|
* main difference between this version and the original function is that
|
|
* this function can make several assumptions about the state of things
|
|
* that allow for significant optimizations versus the standard function.
|
|
* As a result we can do things like drop a frag and maintain an accurate
|
|
* truesize for the skb.
|
|
*/
|
|
static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
|
|
unsigned char *va;
|
|
unsigned int pull_len;
|
|
|
|
/*
|
|
* it is valid to use page_address instead of kmap since we are
|
|
* working with pages allocated out of the lomem pool per
|
|
* alloc_page(GFP_ATOMIC)
|
|
*/
|
|
va = skb_frag_address(frag);
|
|
|
|
/*
|
|
* we need the header to contain the greater of either ETH_HLEN or
|
|
* 60 bytes if the skb->len is less than 60 for skb_pad.
|
|
*/
|
|
pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE);
|
|
|
|
/* align pull length to size of long to optimize memcpy performance */
|
|
skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
|
|
|
|
/* update all of the pointers */
|
|
skb_frag_size_sub(frag, pull_len);
|
|
frag->page_offset += pull_len;
|
|
skb->data_len -= pull_len;
|
|
skb->tail += pull_len;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB
|
|
* @rx_ring: rx descriptor ring packet is being transacted on
|
|
* @skb: pointer to current skb being updated
|
|
*
|
|
* This function provides a basic DMA sync up for the first fragment of an
|
|
* skb. The reason for doing this is that the first fragment cannot be
|
|
* unmapped until we have reached the end of packet descriptor for a buffer
|
|
* chain.
|
|
*/
|
|
static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
/* if the page was released unmap it, else just sync our portion */
|
|
if (unlikely(IXGBE_CB(skb)->page_released)) {
|
|
dma_unmap_page(rx_ring->dev, IXGBE_CB(skb)->dma,
|
|
ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
|
|
IXGBE_CB(skb)->page_released = false;
|
|
} else {
|
|
struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
|
|
|
|
dma_sync_single_range_for_cpu(rx_ring->dev,
|
|
IXGBE_CB(skb)->dma,
|
|
frag->page_offset,
|
|
ixgbe_rx_bufsz(rx_ring),
|
|
DMA_FROM_DEVICE);
|
|
}
|
|
IXGBE_CB(skb)->dma = 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_cleanup_headers - Correct corrupted or empty headers
|
|
* @rx_ring: rx descriptor ring packet is being transacted on
|
|
* @rx_desc: pointer to the EOP Rx descriptor
|
|
* @skb: pointer to current skb being fixed
|
|
*
|
|
* Check for corrupted packet headers caused by senders on the local L2
|
|
* embedded NIC switch not setting up their Tx Descriptors right. These
|
|
* should be very rare.
|
|
*
|
|
* Also address the case where we are pulling data in on pages only
|
|
* and as such no data is present in the skb header.
|
|
*
|
|
* In addition if skb is not at least 60 bytes we need to pad it so that
|
|
* it is large enough to qualify as a valid Ethernet frame.
|
|
*
|
|
* Returns true if an error was encountered and skb was freed.
|
|
**/
|
|
static bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
|
|
union ixgbe_adv_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct net_device *netdev = rx_ring->netdev;
|
|
|
|
/* verify that the packet does not have any known errors */
|
|
if (unlikely(ixgbe_test_staterr(rx_desc,
|
|
IXGBE_RXDADV_ERR_FRAME_ERR_MASK) &&
|
|
!(netdev->features & NETIF_F_RXALL))) {
|
|
dev_kfree_skb_any(skb);
|
|
return true;
|
|
}
|
|
|
|
/* place header in linear portion of buffer */
|
|
if (skb_is_nonlinear(skb))
|
|
ixgbe_pull_tail(rx_ring, skb);
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* do not attempt to pad FCoE Frames as this will disrupt DDP */
|
|
if (ixgbe_rx_is_fcoe(rx_ring, rx_desc))
|
|
return false;
|
|
|
|
#endif
|
|
/* if eth_skb_pad returns an error the skb was freed */
|
|
if (eth_skb_pad(skb))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_reuse_rx_page - page flip buffer and store it back on the ring
|
|
* @rx_ring: rx descriptor ring to store buffers on
|
|
* @old_buff: donor buffer to have page reused
|
|
*
|
|
* Synchronizes page for reuse by the adapter
|
|
**/
|
|
static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring,
|
|
struct ixgbe_rx_buffer *old_buff)
|
|
{
|
|
struct ixgbe_rx_buffer *new_buff;
|
|
u16 nta = rx_ring->next_to_alloc;
|
|
|
|
new_buff = &rx_ring->rx_buffer_info[nta];
|
|
|
|
/* update, and store next to alloc */
|
|
nta++;
|
|
rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
|
|
|
|
/* transfer page from old buffer to new buffer */
|
|
*new_buff = *old_buff;
|
|
|
|
/* sync the buffer for use by the device */
|
|
dma_sync_single_range_for_device(rx_ring->dev, new_buff->dma,
|
|
new_buff->page_offset,
|
|
ixgbe_rx_bufsz(rx_ring),
|
|
DMA_FROM_DEVICE);
|
|
}
|
|
|
|
static inline bool ixgbe_page_is_reserved(struct page *page)
|
|
{
|
|
return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff
|
|
* @rx_ring: rx descriptor ring to transact packets on
|
|
* @rx_buffer: buffer containing page to add
|
|
* @rx_desc: descriptor containing length of buffer written by hardware
|
|
* @skb: sk_buff to place the data into
|
|
*
|
|
* This function will add the data contained in rx_buffer->page to the skb.
|
|
* This is done either through a direct copy if the data in the buffer is
|
|
* less than the skb header size, otherwise it will just attach the page as
|
|
* a frag to the skb.
|
|
*
|
|
* The function will then update the page offset if necessary and return
|
|
* true if the buffer can be reused by the adapter.
|
|
**/
|
|
static bool ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring,
|
|
struct ixgbe_rx_buffer *rx_buffer,
|
|
union ixgbe_adv_rx_desc *rx_desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct page *page = rx_buffer->page;
|
|
unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
|
|
#if (PAGE_SIZE < 8192)
|
|
unsigned int truesize = ixgbe_rx_bufsz(rx_ring);
|
|
#else
|
|
unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
|
|
unsigned int last_offset = ixgbe_rx_pg_size(rx_ring) -
|
|
ixgbe_rx_bufsz(rx_ring);
|
|
#endif
|
|
|
|
if ((size <= IXGBE_RX_HDR_SIZE) && !skb_is_nonlinear(skb)) {
|
|
unsigned char *va = page_address(page) + rx_buffer->page_offset;
|
|
|
|
memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
|
|
|
|
/* page is not reserved, we can reuse buffer as-is */
|
|
if (likely(!ixgbe_page_is_reserved(page)))
|
|
return true;
|
|
|
|
/* this page cannot be reused so discard it */
|
|
__free_pages(page, ixgbe_rx_pg_order(rx_ring));
|
|
return false;
|
|
}
|
|
|
|
skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
|
|
rx_buffer->page_offset, size, truesize);
|
|
|
|
/* avoid re-using remote pages */
|
|
if (unlikely(ixgbe_page_is_reserved(page)))
|
|
return false;
|
|
|
|
#if (PAGE_SIZE < 8192)
|
|
/* if we are only owner of page we can reuse it */
|
|
if (unlikely(page_count(page) != 1))
|
|
return false;
|
|
|
|
/* flip page offset to other buffer */
|
|
rx_buffer->page_offset ^= truesize;
|
|
#else
|
|
/* move offset up to the next cache line */
|
|
rx_buffer->page_offset += truesize;
|
|
|
|
if (rx_buffer->page_offset > last_offset)
|
|
return false;
|
|
#endif
|
|
|
|
/* Even if we own the page, we are not allowed to use atomic_set()
|
|
* This would break get_page_unless_zero() users.
|
|
*/
|
|
atomic_inc(&page->_count);
|
|
|
|
return true;
|
|
}
|
|
|
|
static struct sk_buff *ixgbe_fetch_rx_buffer(struct ixgbe_ring *rx_ring,
|
|
union ixgbe_adv_rx_desc *rx_desc)
|
|
{
|
|
struct ixgbe_rx_buffer *rx_buffer;
|
|
struct sk_buff *skb;
|
|
struct page *page;
|
|
|
|
rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
|
|
page = rx_buffer->page;
|
|
prefetchw(page);
|
|
|
|
skb = rx_buffer->skb;
|
|
|
|
if (likely(!skb)) {
|
|
void *page_addr = page_address(page) +
|
|
rx_buffer->page_offset;
|
|
|
|
/* prefetch first cache line of first page */
|
|
prefetch(page_addr);
|
|
#if L1_CACHE_BYTES < 128
|
|
prefetch(page_addr + L1_CACHE_BYTES);
|
|
#endif
|
|
|
|
/* allocate a skb to store the frags */
|
|
skb = napi_alloc_skb(&rx_ring->q_vector->napi,
|
|
IXGBE_RX_HDR_SIZE);
|
|
if (unlikely(!skb)) {
|
|
rx_ring->rx_stats.alloc_rx_buff_failed++;
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* we will be copying header into skb->data in
|
|
* pskb_may_pull so it is in our interest to prefetch
|
|
* it now to avoid a possible cache miss
|
|
*/
|
|
prefetchw(skb->data);
|
|
|
|
/*
|
|
* Delay unmapping of the first packet. It carries the
|
|
* header information, HW may still access the header
|
|
* after the writeback. Only unmap it when EOP is
|
|
* reached
|
|
*/
|
|
if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
|
|
goto dma_sync;
|
|
|
|
IXGBE_CB(skb)->dma = rx_buffer->dma;
|
|
} else {
|
|
if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))
|
|
ixgbe_dma_sync_frag(rx_ring, skb);
|
|
|
|
dma_sync:
|
|
/* we are reusing so sync this buffer for CPU use */
|
|
dma_sync_single_range_for_cpu(rx_ring->dev,
|
|
rx_buffer->dma,
|
|
rx_buffer->page_offset,
|
|
ixgbe_rx_bufsz(rx_ring),
|
|
DMA_FROM_DEVICE);
|
|
|
|
rx_buffer->skb = NULL;
|
|
}
|
|
|
|
/* pull page into skb */
|
|
if (ixgbe_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
|
|
/* hand second half of page back to the ring */
|
|
ixgbe_reuse_rx_page(rx_ring, rx_buffer);
|
|
} else if (IXGBE_CB(skb)->dma == rx_buffer->dma) {
|
|
/* the page has been released from the ring */
|
|
IXGBE_CB(skb)->page_released = true;
|
|
} else {
|
|
/* we are not reusing the buffer so unmap it */
|
|
dma_unmap_page(rx_ring->dev, rx_buffer->dma,
|
|
ixgbe_rx_pg_size(rx_ring),
|
|
DMA_FROM_DEVICE);
|
|
}
|
|
|
|
/* clear contents of buffer_info */
|
|
rx_buffer->page = NULL;
|
|
|
|
return skb;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
|
|
* @q_vector: structure containing interrupt and ring information
|
|
* @rx_ring: rx descriptor ring to transact packets on
|
|
* @budget: Total limit on number of packets to process
|
|
*
|
|
* This function provides a "bounce buffer" approach to Rx interrupt
|
|
* processing. The advantage to this is that on systems that have
|
|
* expensive overhead for IOMMU access this provides a means of avoiding
|
|
* it by maintaining the mapping of the page to the syste.
|
|
*
|
|
* Returns amount of work completed
|
|
**/
|
|
static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
|
|
struct ixgbe_ring *rx_ring,
|
|
const int budget)
|
|
{
|
|
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
|
|
#ifdef IXGBE_FCOE
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
int ddp_bytes;
|
|
unsigned int mss = 0;
|
|
#endif /* IXGBE_FCOE */
|
|
u16 cleaned_count = ixgbe_desc_unused(rx_ring);
|
|
|
|
while (likely(total_rx_packets < budget)) {
|
|
union ixgbe_adv_rx_desc *rx_desc;
|
|
struct sk_buff *skb;
|
|
|
|
/* return some buffers to hardware, one at a time is too slow */
|
|
if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
|
|
ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
|
|
cleaned_count = 0;
|
|
}
|
|
|
|
rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean);
|
|
|
|
if (!rx_desc->wb.upper.status_error)
|
|
break;
|
|
|
|
/* This memory barrier is needed to keep us from reading
|
|
* any other fields out of the rx_desc until we know the
|
|
* descriptor has been written back
|
|
*/
|
|
dma_rmb();
|
|
|
|
/* retrieve a buffer from the ring */
|
|
skb = ixgbe_fetch_rx_buffer(rx_ring, rx_desc);
|
|
|
|
/* exit if we failed to retrieve a buffer */
|
|
if (!skb)
|
|
break;
|
|
|
|
cleaned_count++;
|
|
|
|
/* place incomplete frames back on ring for completion */
|
|
if (ixgbe_is_non_eop(rx_ring, rx_desc, skb))
|
|
continue;
|
|
|
|
/* verify the packet layout is correct */
|
|
if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb))
|
|
continue;
|
|
|
|
/* probably a little skewed due to removing CRC */
|
|
total_rx_bytes += skb->len;
|
|
|
|
/* populate checksum, timestamp, VLAN, and protocol */
|
|
ixgbe_process_skb_fields(rx_ring, rx_desc, skb);
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* if ddp, not passing to ULD unless for FCP_RSP or error */
|
|
if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) {
|
|
ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
|
|
/* include DDPed FCoE data */
|
|
if (ddp_bytes > 0) {
|
|
if (!mss) {
|
|
mss = rx_ring->netdev->mtu -
|
|
sizeof(struct fcoe_hdr) -
|
|
sizeof(struct fc_frame_header) -
|
|
sizeof(struct fcoe_crc_eof);
|
|
if (mss > 512)
|
|
mss &= ~511;
|
|
}
|
|
total_rx_bytes += ddp_bytes;
|
|
total_rx_packets += DIV_ROUND_UP(ddp_bytes,
|
|
mss);
|
|
}
|
|
if (!ddp_bytes) {
|
|
dev_kfree_skb_any(skb);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
#endif /* IXGBE_FCOE */
|
|
skb_mark_napi_id(skb, &q_vector->napi);
|
|
ixgbe_rx_skb(q_vector, skb);
|
|
|
|
/* update budget accounting */
|
|
total_rx_packets++;
|
|
}
|
|
|
|
u64_stats_update_begin(&rx_ring->syncp);
|
|
rx_ring->stats.packets += total_rx_packets;
|
|
rx_ring->stats.bytes += total_rx_bytes;
|
|
u64_stats_update_end(&rx_ring->syncp);
|
|
q_vector->rx.total_packets += total_rx_packets;
|
|
q_vector->rx.total_bytes += total_rx_bytes;
|
|
|
|
return total_rx_packets;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_RX_BUSY_POLL
|
|
/* must be called with local_bh_disable()d */
|
|
static int ixgbe_low_latency_recv(struct napi_struct *napi)
|
|
{
|
|
struct ixgbe_q_vector *q_vector =
|
|
container_of(napi, struct ixgbe_q_vector, napi);
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
struct ixgbe_ring *ring;
|
|
int found = 0;
|
|
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state))
|
|
return LL_FLUSH_FAILED;
|
|
|
|
if (!ixgbe_qv_lock_poll(q_vector))
|
|
return LL_FLUSH_BUSY;
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->rx) {
|
|
found = ixgbe_clean_rx_irq(q_vector, ring, 4);
|
|
#ifdef BP_EXTENDED_STATS
|
|
if (found)
|
|
ring->stats.cleaned += found;
|
|
else
|
|
ring->stats.misses++;
|
|
#endif
|
|
if (found)
|
|
break;
|
|
}
|
|
|
|
ixgbe_qv_unlock_poll(q_vector);
|
|
|
|
return found;
|
|
}
|
|
#endif /* CONFIG_NET_RX_BUSY_POLL */
|
|
|
|
/**
|
|
* ixgbe_configure_msix - Configure MSI-X hardware
|
|
* @adapter: board private structure
|
|
*
|
|
* ixgbe_configure_msix sets up the hardware to properly generate MSI-X
|
|
* interrupts.
|
|
**/
|
|
static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_q_vector *q_vector;
|
|
int v_idx;
|
|
u32 mask;
|
|
|
|
/* Populate MSIX to EITR Select */
|
|
if (adapter->num_vfs > 32) {
|
|
u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
|
|
}
|
|
|
|
/*
|
|
* Populate the IVAR table and set the ITR values to the
|
|
* corresponding register.
|
|
*/
|
|
for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) {
|
|
struct ixgbe_ring *ring;
|
|
q_vector = adapter->q_vector[v_idx];
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->rx)
|
|
ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx);
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->tx)
|
|
ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx);
|
|
|
|
ixgbe_write_eitr(q_vector);
|
|
}
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
|
|
v_idx);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
ixgbe_set_ivar(adapter, -1, 1, v_idx);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
|
|
|
|
/* set up to autoclear timer, and the vectors */
|
|
mask = IXGBE_EIMS_ENABLE_MASK;
|
|
mask &= ~(IXGBE_EIMS_OTHER |
|
|
IXGBE_EIMS_MAILBOX |
|
|
IXGBE_EIMS_LSC);
|
|
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
|
|
}
|
|
|
|
enum latency_range {
|
|
lowest_latency = 0,
|
|
low_latency = 1,
|
|
bulk_latency = 2,
|
|
latency_invalid = 255
|
|
};
|
|
|
|
/**
|
|
* ixgbe_update_itr - update the dynamic ITR value based on statistics
|
|
* @q_vector: structure containing interrupt and ring information
|
|
* @ring_container: structure containing ring performance data
|
|
*
|
|
* Stores a new ITR value based on packets and byte
|
|
* counts during the last interrupt. The advantage of per interrupt
|
|
* computation is faster updates and more accurate ITR for the current
|
|
* traffic pattern. Constants in this function were computed
|
|
* based on theoretical maximum wire speed and thresholds were set based
|
|
* on testing data as well as attempting to minimize response time
|
|
* while increasing bulk throughput.
|
|
* this functionality is controlled by the InterruptThrottleRate module
|
|
* parameter (see ixgbe_param.c)
|
|
**/
|
|
static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
|
|
struct ixgbe_ring_container *ring_container)
|
|
{
|
|
int bytes = ring_container->total_bytes;
|
|
int packets = ring_container->total_packets;
|
|
u32 timepassed_us;
|
|
u64 bytes_perint;
|
|
u8 itr_setting = ring_container->itr;
|
|
|
|
if (packets == 0)
|
|
return;
|
|
|
|
/* simple throttlerate management
|
|
* 0-10MB/s lowest (100000 ints/s)
|
|
* 10-20MB/s low (20000 ints/s)
|
|
* 20-1249MB/s bulk (8000 ints/s)
|
|
*/
|
|
/* what was last interrupt timeslice? */
|
|
timepassed_us = q_vector->itr >> 2;
|
|
if (timepassed_us == 0)
|
|
return;
|
|
|
|
bytes_perint = bytes / timepassed_us; /* bytes/usec */
|
|
|
|
switch (itr_setting) {
|
|
case lowest_latency:
|
|
if (bytes_perint > 10)
|
|
itr_setting = low_latency;
|
|
break;
|
|
case low_latency:
|
|
if (bytes_perint > 20)
|
|
itr_setting = bulk_latency;
|
|
else if (bytes_perint <= 10)
|
|
itr_setting = lowest_latency;
|
|
break;
|
|
case bulk_latency:
|
|
if (bytes_perint <= 20)
|
|
itr_setting = low_latency;
|
|
break;
|
|
}
|
|
|
|
/* clear work counters since we have the values we need */
|
|
ring_container->total_bytes = 0;
|
|
ring_container->total_packets = 0;
|
|
|
|
/* write updated itr to ring container */
|
|
ring_container->itr = itr_setting;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_write_eitr - write EITR register in hardware specific way
|
|
* @q_vector: structure containing interrupt and ring information
|
|
*
|
|
* This function is made to be called by ethtool and by the driver
|
|
* when it needs to update EITR registers at runtime. Hardware
|
|
* specific quirks/differences are taken care of here.
|
|
*/
|
|
void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
|
|
{
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int v_idx = q_vector->v_idx;
|
|
u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR;
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
/* must write high and low 16 bits to reset counter */
|
|
itr_reg |= (itr_reg << 16);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
/*
|
|
* set the WDIS bit to not clear the timer bits and cause an
|
|
* immediate assertion of the interrupt
|
|
*/
|
|
itr_reg |= IXGBE_EITR_CNT_WDIS;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
|
|
}
|
|
|
|
static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector)
|
|
{
|
|
u32 new_itr = q_vector->itr;
|
|
u8 current_itr;
|
|
|
|
ixgbe_update_itr(q_vector, &q_vector->tx);
|
|
ixgbe_update_itr(q_vector, &q_vector->rx);
|
|
|
|
current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
|
|
|
|
switch (current_itr) {
|
|
/* counts and packets in update_itr are dependent on these numbers */
|
|
case lowest_latency:
|
|
new_itr = IXGBE_100K_ITR;
|
|
break;
|
|
case low_latency:
|
|
new_itr = IXGBE_20K_ITR;
|
|
break;
|
|
case bulk_latency:
|
|
new_itr = IXGBE_8K_ITR;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (new_itr != q_vector->itr) {
|
|
/* do an exponential smoothing */
|
|
new_itr = (10 * new_itr * q_vector->itr) /
|
|
((9 * new_itr) + q_vector->itr);
|
|
|
|
/* save the algorithm value here */
|
|
q_vector->itr = new_itr;
|
|
|
|
ixgbe_write_eitr(q_vector);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_check_overtemp_subtask - check for over temperature
|
|
* @adapter: pointer to adapter
|
|
**/
|
|
static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 eicr = adapter->interrupt_event;
|
|
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state))
|
|
return;
|
|
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
|
|
!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT))
|
|
return;
|
|
|
|
adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT;
|
|
|
|
switch (hw->device_id) {
|
|
case IXGBE_DEV_ID_82599_T3_LOM:
|
|
/*
|
|
* Since the warning interrupt is for both ports
|
|
* we don't have to check if:
|
|
* - This interrupt wasn't for our port.
|
|
* - We may have missed the interrupt so always have to
|
|
* check if we got a LSC
|
|
*/
|
|
if (!(eicr & IXGBE_EICR_GPI_SDP0) &&
|
|
!(eicr & IXGBE_EICR_LSC))
|
|
return;
|
|
|
|
if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) {
|
|
u32 speed;
|
|
bool link_up = false;
|
|
|
|
hw->mac.ops.check_link(hw, &speed, &link_up, false);
|
|
|
|
if (link_up)
|
|
return;
|
|
}
|
|
|
|
/* Check if this is not due to overtemp */
|
|
if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP)
|
|
return;
|
|
|
|
break;
|
|
default:
|
|
if (!(eicr & IXGBE_EICR_GPI_SDP0))
|
|
return;
|
|
break;
|
|
}
|
|
e_crit(drv,
|
|
"Network adapter has been stopped because it has over heated. "
|
|
"Restart the computer. If the problem persists, "
|
|
"power off the system and replace the adapter\n");
|
|
|
|
adapter->interrupt_event = 0;
|
|
}
|
|
|
|
static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
|
|
(eicr & IXGBE_EICR_GPI_SDP1)) {
|
|
e_crit(probe, "Fan has stopped, replace the adapter\n");
|
|
/* write to clear the interrupt */
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr)
|
|
{
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
|
|
return;
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
/*
|
|
* Need to check link state so complete overtemp check
|
|
* on service task
|
|
*/
|
|
if (((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)) &&
|
|
(!test_bit(__IXGBE_DOWN, &adapter->state))) {
|
|
adapter->interrupt_event = eicr;
|
|
adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
|
|
ixgbe_service_event_schedule(adapter);
|
|
return;
|
|
}
|
|
return;
|
|
case ixgbe_mac_X540:
|
|
if (!(eicr & IXGBE_EICR_TS))
|
|
return;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
e_crit(drv,
|
|
"Network adapter has been stopped because it has over heated. "
|
|
"Restart the computer. If the problem persists, "
|
|
"power off the system and replace the adapter\n");
|
|
}
|
|
|
|
static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
if (eicr & IXGBE_EICR_GPI_SDP2) {
|
|
/* Clear the interrupt */
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
|
|
adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
|
|
ixgbe_service_event_schedule(adapter);
|
|
}
|
|
}
|
|
|
|
if (eicr & IXGBE_EICR_GPI_SDP1) {
|
|
/* Clear the interrupt */
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
|
|
adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
|
|
ixgbe_service_event_schedule(adapter);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
adapter->lsc_int++;
|
|
adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
|
|
adapter->link_check_timeout = jiffies;
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
ixgbe_service_event_schedule(adapter);
|
|
}
|
|
}
|
|
|
|
static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
|
|
u64 qmask)
|
|
{
|
|
u32 mask;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
mask = (qmask & 0xFFFFFFFF);
|
|
if (mask)
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask);
|
|
mask = (qmask >> 32);
|
|
if (mask)
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/* skip the flush */
|
|
}
|
|
|
|
static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
|
|
u64 qmask)
|
|
{
|
|
u32 mask;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
mask = (qmask & 0xFFFFFFFF);
|
|
if (mask)
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask);
|
|
mask = (qmask >> 32);
|
|
if (mask)
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/* skip the flush */
|
|
}
|
|
|
|
/**
|
|
* ixgbe_irq_enable - Enable default interrupt generation settings
|
|
* @adapter: board private structure
|
|
**/
|
|
static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
|
|
bool flush)
|
|
{
|
|
u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
|
|
|
|
/* don't reenable LSC while waiting for link */
|
|
if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
|
|
mask &= ~IXGBE_EIMS_LSC;
|
|
|
|
if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
mask |= IXGBE_EIMS_GPI_SDP0;
|
|
break;
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
mask |= IXGBE_EIMS_TS;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
|
|
mask |= IXGBE_EIMS_GPI_SDP1;
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
mask |= IXGBE_EIMS_GPI_SDP1;
|
|
mask |= IXGBE_EIMS_GPI_SDP2;
|
|
/* fall through */
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
mask |= IXGBE_EIMS_ECC;
|
|
mask |= IXGBE_EIMS_MAILBOX;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) &&
|
|
!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
|
|
mask |= IXGBE_EIMS_FLOW_DIR;
|
|
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
|
|
if (queues)
|
|
ixgbe_irq_enable_queues(adapter, ~0);
|
|
if (flush)
|
|
IXGBE_WRITE_FLUSH(&adapter->hw);
|
|
}
|
|
|
|
static irqreturn_t ixgbe_msix_other(int irq, void *data)
|
|
{
|
|
struct ixgbe_adapter *adapter = data;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 eicr;
|
|
|
|
/*
|
|
* Workaround for Silicon errata. Use clear-by-write instead
|
|
* of clear-by-read. Reading with EICS will return the
|
|
* interrupt causes without clearing, which later be done
|
|
* with the write to EICR.
|
|
*/
|
|
eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
|
|
|
|
/* The lower 16bits of the EICR register are for the queue interrupts
|
|
* which should be masked here in order to not accidently clear them if
|
|
* the bits are high when ixgbe_msix_other is called. There is a race
|
|
* condition otherwise which results in possible performance loss
|
|
* especially if the ixgbe_msix_other interrupt is triggering
|
|
* consistently (as it would when PPS is turned on for the X540 device)
|
|
*/
|
|
eicr &= 0xFFFF0000;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
|
|
|
|
if (eicr & IXGBE_EICR_LSC)
|
|
ixgbe_check_lsc(adapter);
|
|
|
|
if (eicr & IXGBE_EICR_MAILBOX)
|
|
ixgbe_msg_task(adapter);
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
if (eicr & IXGBE_EICR_ECC) {
|
|
e_info(link, "Received ECC Err, initiating reset\n");
|
|
adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
|
|
ixgbe_service_event_schedule(adapter);
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
|
|
}
|
|
/* Handle Flow Director Full threshold interrupt */
|
|
if (eicr & IXGBE_EICR_FLOW_DIR) {
|
|
int reinit_count = 0;
|
|
int i;
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct ixgbe_ring *ring = adapter->tx_ring[i];
|
|
if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
|
|
&ring->state))
|
|
reinit_count++;
|
|
}
|
|
if (reinit_count) {
|
|
/* no more flow director interrupts until after init */
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
|
|
adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
|
|
ixgbe_service_event_schedule(adapter);
|
|
}
|
|
}
|
|
ixgbe_check_sfp_event(adapter, eicr);
|
|
ixgbe_check_overtemp_event(adapter, eicr);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ixgbe_check_fan_failure(adapter, eicr);
|
|
|
|
if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
|
|
ixgbe_ptp_check_pps_event(adapter, eicr);
|
|
|
|
/* re-enable the original interrupt state, no lsc, no queues */
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state))
|
|
ixgbe_irq_enable(adapter, false, false);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data)
|
|
{
|
|
struct ixgbe_q_vector *q_vector = data;
|
|
|
|
/* EIAM disabled interrupts (on this vector) for us */
|
|
|
|
if (q_vector->rx.ring || q_vector->tx.ring)
|
|
napi_schedule(&q_vector->napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_poll - NAPI Rx polling callback
|
|
* @napi: structure for representing this polling device
|
|
* @budget: how many packets driver is allowed to clean
|
|
*
|
|
* This function is used for legacy and MSI, NAPI mode
|
|
**/
|
|
int ixgbe_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct ixgbe_q_vector *q_vector =
|
|
container_of(napi, struct ixgbe_q_vector, napi);
|
|
struct ixgbe_adapter *adapter = q_vector->adapter;
|
|
struct ixgbe_ring *ring;
|
|
int per_ring_budget;
|
|
bool clean_complete = true;
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
|
|
ixgbe_update_dca(q_vector);
|
|
#endif
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->tx)
|
|
clean_complete &= !!ixgbe_clean_tx_irq(q_vector, ring);
|
|
|
|
if (!ixgbe_qv_lock_napi(q_vector))
|
|
return budget;
|
|
|
|
/* attempt to distribute budget to each queue fairly, but don't allow
|
|
* the budget to go below 1 because we'll exit polling */
|
|
if (q_vector->rx.count > 1)
|
|
per_ring_budget = max(budget/q_vector->rx.count, 1);
|
|
else
|
|
per_ring_budget = budget;
|
|
|
|
ixgbe_for_each_ring(ring, q_vector->rx)
|
|
clean_complete &= (ixgbe_clean_rx_irq(q_vector, ring,
|
|
per_ring_budget) < per_ring_budget);
|
|
|
|
ixgbe_qv_unlock_napi(q_vector);
|
|
/* If all work not completed, return budget and keep polling */
|
|
if (!clean_complete)
|
|
return budget;
|
|
|
|
/* all work done, exit the polling mode */
|
|
napi_complete(napi);
|
|
if (adapter->rx_itr_setting & 1)
|
|
ixgbe_set_itr(q_vector);
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state))
|
|
ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_request_msix_irqs - Initialize MSI-X interrupts
|
|
* @adapter: board private structure
|
|
*
|
|
* ixgbe_request_msix_irqs allocates MSI-X vectors and requests
|
|
* interrupts from the kernel.
|
|
**/
|
|
static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int vector, err;
|
|
int ri = 0, ti = 0;
|
|
|
|
for (vector = 0; vector < adapter->num_q_vectors; vector++) {
|
|
struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
|
|
struct msix_entry *entry = &adapter->msix_entries[vector];
|
|
|
|
if (q_vector->tx.ring && q_vector->rx.ring) {
|
|
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
|
|
"%s-%s-%d", netdev->name, "TxRx", ri++);
|
|
ti++;
|
|
} else if (q_vector->rx.ring) {
|
|
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
|
|
"%s-%s-%d", netdev->name, "rx", ri++);
|
|
} else if (q_vector->tx.ring) {
|
|
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
|
|
"%s-%s-%d", netdev->name, "tx", ti++);
|
|
} else {
|
|
/* skip this unused q_vector */
|
|
continue;
|
|
}
|
|
err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0,
|
|
q_vector->name, q_vector);
|
|
if (err) {
|
|
e_err(probe, "request_irq failed for MSIX interrupt "
|
|
"Error: %d\n", err);
|
|
goto free_queue_irqs;
|
|
}
|
|
/* If Flow Director is enabled, set interrupt affinity */
|
|
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
|
|
/* assign the mask for this irq */
|
|
irq_set_affinity_hint(entry->vector,
|
|
&q_vector->affinity_mask);
|
|
}
|
|
}
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
ixgbe_msix_other, 0, netdev->name, adapter);
|
|
if (err) {
|
|
e_err(probe, "request_irq for msix_other failed: %d\n", err);
|
|
goto free_queue_irqs;
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_queue_irqs:
|
|
while (vector) {
|
|
vector--;
|
|
irq_set_affinity_hint(adapter->msix_entries[vector].vector,
|
|
NULL);
|
|
free_irq(adapter->msix_entries[vector].vector,
|
|
adapter->q_vector[vector]);
|
|
}
|
|
adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
|
|
pci_disable_msix(adapter->pdev);
|
|
kfree(adapter->msix_entries);
|
|
adapter->msix_entries = NULL;
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_intr - legacy mode Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
**/
|
|
static irqreturn_t ixgbe_intr(int irq, void *data)
|
|
{
|
|
struct ixgbe_adapter *adapter = data;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
|
|
u32 eicr;
|
|
|
|
/*
|
|
* Workaround for silicon errata #26 on 82598. Mask the interrupt
|
|
* before the read of EICR.
|
|
*/
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
|
|
|
|
/* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
|
|
* therefore no explicit interrupt disable is necessary */
|
|
eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
|
|
if (!eicr) {
|
|
/*
|
|
* shared interrupt alert!
|
|
* make sure interrupts are enabled because the read will
|
|
* have disabled interrupts due to EIAM
|
|
* finish the workaround of silicon errata on 82598. Unmask
|
|
* the interrupt that we masked before the EICR read.
|
|
*/
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state))
|
|
ixgbe_irq_enable(adapter, true, true);
|
|
return IRQ_NONE; /* Not our interrupt */
|
|
}
|
|
|
|
if (eicr & IXGBE_EICR_LSC)
|
|
ixgbe_check_lsc(adapter);
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
ixgbe_check_sfp_event(adapter, eicr);
|
|
/* Fall through */
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
if (eicr & IXGBE_EICR_ECC) {
|
|
e_info(link, "Received ECC Err, initiating reset\n");
|
|
adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
|
|
ixgbe_service_event_schedule(adapter);
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
|
|
}
|
|
ixgbe_check_overtemp_event(adapter, eicr);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ixgbe_check_fan_failure(adapter, eicr);
|
|
if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
|
|
ixgbe_ptp_check_pps_event(adapter, eicr);
|
|
|
|
/* would disable interrupts here but EIAM disabled it */
|
|
napi_schedule(&q_vector->napi);
|
|
|
|
/*
|
|
* re-enable link(maybe) and non-queue interrupts, no flush.
|
|
* ixgbe_poll will re-enable the queue interrupts
|
|
*/
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state))
|
|
ixgbe_irq_enable(adapter, false, false);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_request_irq - initialize interrupts
|
|
* @adapter: board private structure
|
|
*
|
|
* Attempts to configure interrupts using the best available
|
|
* capabilities of the hardware and kernel.
|
|
**/
|
|
static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int err;
|
|
|
|
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
|
|
err = ixgbe_request_msix_irqs(adapter);
|
|
else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED)
|
|
err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
|
|
netdev->name, adapter);
|
|
else
|
|
err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
|
|
netdev->name, adapter);
|
|
|
|
if (err)
|
|
e_err(probe, "request_irq failed, Error %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
|
|
{
|
|
int vector;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
|
|
free_irq(adapter->pdev->irq, adapter);
|
|
return;
|
|
}
|
|
|
|
for (vector = 0; vector < adapter->num_q_vectors; vector++) {
|
|
struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
|
|
struct msix_entry *entry = &adapter->msix_entries[vector];
|
|
|
|
/* free only the irqs that were actually requested */
|
|
if (!q_vector->rx.ring && !q_vector->tx.ring)
|
|
continue;
|
|
|
|
/* clear the affinity_mask in the IRQ descriptor */
|
|
irq_set_affinity_hint(entry->vector, NULL);
|
|
|
|
free_irq(entry->vector, q_vector);
|
|
}
|
|
|
|
free_irq(adapter->msix_entries[vector++].vector, adapter);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_irq_disable - Mask off interrupt generation on the NIC
|
|
* @adapter: board private structure
|
|
**/
|
|
static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
|
|
{
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
IXGBE_WRITE_FLUSH(&adapter->hw);
|
|
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
|
|
int vector;
|
|
|
|
for (vector = 0; vector < adapter->num_q_vectors; vector++)
|
|
synchronize_irq(adapter->msix_entries[vector].vector);
|
|
|
|
synchronize_irq(adapter->msix_entries[vector++].vector);
|
|
} else {
|
|
synchronize_irq(adapter->pdev->irq);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
|
|
*
|
|
**/
|
|
static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
|
|
|
|
ixgbe_write_eitr(q_vector);
|
|
|
|
ixgbe_set_ivar(adapter, 0, 0, 0);
|
|
ixgbe_set_ivar(adapter, 1, 0, 0);
|
|
|
|
e_info(hw, "Legacy interrupt IVAR setup done\n");
|
|
}
|
|
|
|
/**
|
|
* ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
|
|
* @adapter: board private structure
|
|
* @ring: structure containing ring specific data
|
|
*
|
|
* Configure the Tx descriptor ring after a reset.
|
|
**/
|
|
void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u64 tdba = ring->dma;
|
|
int wait_loop = 10;
|
|
u32 txdctl = IXGBE_TXDCTL_ENABLE;
|
|
u8 reg_idx = ring->reg_idx;
|
|
|
|
/* disable queue to avoid issues while updating state */
|
|
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0);
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
|
|
(tdba & DMA_BIT_MASK(32)));
|
|
IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
|
|
IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
|
|
ring->count * sizeof(union ixgbe_adv_tx_desc));
|
|
IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
|
|
IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
|
|
ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx);
|
|
|
|
/*
|
|
* set WTHRESH to encourage burst writeback, it should not be set
|
|
* higher than 1 when:
|
|
* - ITR is 0 as it could cause false TX hangs
|
|
* - ITR is set to > 100k int/sec and BQL is enabled
|
|
*
|
|
* In order to avoid issues WTHRESH + PTHRESH should always be equal
|
|
* to or less than the number of on chip descriptors, which is
|
|
* currently 40.
|
|
*/
|
|
if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR))
|
|
txdctl |= (1 << 16); /* WTHRESH = 1 */
|
|
else
|
|
txdctl |= (8 << 16); /* WTHRESH = 8 */
|
|
|
|
/*
|
|
* Setting PTHRESH to 32 both improves performance
|
|
* and avoids a TX hang with DFP enabled
|
|
*/
|
|
txdctl |= (1 << 8) | /* HTHRESH = 1 */
|
|
32; /* PTHRESH = 32 */
|
|
|
|
/* reinitialize flowdirector state */
|
|
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
|
|
ring->atr_sample_rate = adapter->atr_sample_rate;
|
|
ring->atr_count = 0;
|
|
set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state);
|
|
} else {
|
|
ring->atr_sample_rate = 0;
|
|
}
|
|
|
|
/* initialize XPS */
|
|
if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) {
|
|
struct ixgbe_q_vector *q_vector = ring->q_vector;
|
|
|
|
if (q_vector)
|
|
netif_set_xps_queue(ring->netdev,
|
|
&q_vector->affinity_mask,
|
|
ring->queue_index);
|
|
}
|
|
|
|
clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
|
|
|
|
/* enable queue */
|
|
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
|
|
|
|
/* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
|
|
if (hw->mac.type == ixgbe_mac_82598EB &&
|
|
!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
|
|
return;
|
|
|
|
/* poll to verify queue is enabled */
|
|
do {
|
|
usleep_range(1000, 2000);
|
|
txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
|
|
} while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
|
|
if (!wait_loop)
|
|
e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
|
|
}
|
|
|
|
static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 rttdcs, mtqc;
|
|
u8 tcs = netdev_get_num_tc(adapter->netdev);
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
return;
|
|
|
|
/* disable the arbiter while setting MTQC */
|
|
rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
|
|
rttdcs |= IXGBE_RTTDCS_ARBDIS;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
|
|
|
|
/* set transmit pool layout */
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
|
|
mtqc = IXGBE_MTQC_VT_ENA;
|
|
if (tcs > 4)
|
|
mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
|
|
else if (tcs > 1)
|
|
mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
|
|
else if (adapter->ring_feature[RING_F_RSS].indices == 4)
|
|
mtqc |= IXGBE_MTQC_32VF;
|
|
else
|
|
mtqc |= IXGBE_MTQC_64VF;
|
|
} else {
|
|
if (tcs > 4)
|
|
mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
|
|
else if (tcs > 1)
|
|
mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
|
|
else
|
|
mtqc = IXGBE_MTQC_64Q_1PB;
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
|
|
|
|
/* Enable Security TX Buffer IFG for multiple pb */
|
|
if (tcs) {
|
|
u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
|
|
sectx |= IXGBE_SECTX_DCB;
|
|
IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx);
|
|
}
|
|
|
|
/* re-enable the arbiter */
|
|
rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the Tx unit of the MAC after a reset.
|
|
**/
|
|
static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 dmatxctl;
|
|
u32 i;
|
|
|
|
ixgbe_setup_mtqc(adapter);
|
|
|
|
if (hw->mac.type != ixgbe_mac_82598EB) {
|
|
/* DMATXCTL.EN must be before Tx queues are enabled */
|
|
dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
|
|
dmatxctl |= IXGBE_DMATXCTL_TE;
|
|
IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
|
|
}
|
|
|
|
/* Setup the HW Tx Head and Tail descriptor pointers */
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
|
|
}
|
|
|
|
static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u8 reg_idx = ring->reg_idx;
|
|
u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
|
|
|
|
srrctl |= IXGBE_SRRCTL_DROP_EN;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
|
|
}
|
|
|
|
static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u8 reg_idx = ring->reg_idx;
|
|
u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
|
|
|
|
srrctl &= ~IXGBE_SRRCTL_DROP_EN;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
|
|
#else
|
|
static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
|
|
#endif
|
|
{
|
|
int i;
|
|
bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
|
|
|
|
if (adapter->ixgbe_ieee_pfc)
|
|
pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
|
|
|
|
/*
|
|
* We should set the drop enable bit if:
|
|
* SR-IOV is enabled
|
|
* or
|
|
* Number of Rx queues > 1 and flow control is disabled
|
|
*
|
|
* This allows us to avoid head of line blocking for security
|
|
* and performance reasons.
|
|
*/
|
|
if (adapter->num_vfs || (adapter->num_rx_queues > 1 &&
|
|
!(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) {
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]);
|
|
} else {
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]);
|
|
}
|
|
}
|
|
|
|
#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
|
|
|
|
static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *rx_ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 srrctl;
|
|
u8 reg_idx = rx_ring->reg_idx;
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB) {
|
|
u16 mask = adapter->ring_feature[RING_F_RSS].mask;
|
|
|
|
/*
|
|
* if VMDq is not active we must program one srrctl register
|
|
* per RSS queue since we have enabled RDRXCTL.MVMEN
|
|
*/
|
|
reg_idx &= mask;
|
|
}
|
|
|
|
/* configure header buffer length, needed for RSC */
|
|
srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
|
|
|
|
/* configure the packet buffer length */
|
|
srrctl |= ixgbe_rx_bufsz(rx_ring) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
|
|
|
|
/* configure descriptor type */
|
|
srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
|
|
}
|
|
|
|
static void ixgbe_setup_reta(struct ixgbe_adapter *adapter, const u32 *seed)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 reta = 0;
|
|
int i, j;
|
|
int reta_entries = 128;
|
|
u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
|
|
int indices_multi;
|
|
|
|
/*
|
|
* Program table for at least 2 queues w/ SR-IOV so that VFs can
|
|
* make full use of any rings they may have. We will use the
|
|
* PSRTYPE register to control how many rings we use within the PF.
|
|
*/
|
|
if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 2))
|
|
rss_i = 2;
|
|
|
|
/* Fill out hash function seeds */
|
|
for (i = 0; i < 10; i++)
|
|
IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
|
|
|
|
/* Fill out the redirection table as follows:
|
|
* 82598: 128 (8 bit wide) entries containing pair of 4 bit RSS indices
|
|
* 82599/X540: 128 (8 bit wide) entries containing 4 bit RSS index
|
|
* X550: 512 (8 bit wide) entries containing 6 bit RSS index
|
|
*/
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB)
|
|
indices_multi = 0x11;
|
|
else
|
|
indices_multi = 0x1;
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
|
|
reta_entries = 512;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Fill out redirection table */
|
|
for (i = 0, j = 0; i < reta_entries; i++, j++) {
|
|
if (j == rss_i)
|
|
j = 0;
|
|
reta = (reta << 8) | (j * indices_multi);
|
|
if ((i & 3) == 3) {
|
|
if (i < 128)
|
|
IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
|
|
else
|
|
IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32),
|
|
reta);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter, const u32 *seed)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 vfreta = 0;
|
|
u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
|
|
unsigned int pf_pool = adapter->num_vfs;
|
|
int i, j;
|
|
|
|
/* Fill out hash function seeds */
|
|
for (i = 0; i < 10; i++)
|
|
IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, pf_pool), seed[i]);
|
|
|
|
/* Fill out the redirection table */
|
|
for (i = 0, j = 0; i < 64; i++, j++) {
|
|
if (j == rss_i)
|
|
j = 0;
|
|
vfreta = (vfreta << 8) | j;
|
|
if ((i & 3) == 3)
|
|
IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, pf_pool),
|
|
vfreta);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 mrqc = 0, rss_field = 0, vfmrqc = 0;
|
|
u32 rss_key[10];
|
|
u32 rxcsum;
|
|
|
|
/* Disable indicating checksum in descriptor, enables RSS hash */
|
|
rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
|
|
rxcsum |= IXGBE_RXCSUM_PCSD;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
|
|
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
|
|
if (adapter->ring_feature[RING_F_RSS].mask)
|
|
mrqc = IXGBE_MRQC_RSSEN;
|
|
} else {
|
|
u8 tcs = netdev_get_num_tc(adapter->netdev);
|
|
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
|
|
if (tcs > 4)
|
|
mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */
|
|
else if (tcs > 1)
|
|
mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */
|
|
else if (adapter->ring_feature[RING_F_RSS].indices == 4)
|
|
mrqc = IXGBE_MRQC_VMDQRSS32EN;
|
|
else
|
|
mrqc = IXGBE_MRQC_VMDQRSS64EN;
|
|
} else {
|
|
if (tcs > 4)
|
|
mrqc = IXGBE_MRQC_RTRSS8TCEN;
|
|
else if (tcs > 1)
|
|
mrqc = IXGBE_MRQC_RTRSS4TCEN;
|
|
else
|
|
mrqc = IXGBE_MRQC_RSSEN;
|
|
}
|
|
}
|
|
|
|
/* Perform hash on these packet types */
|
|
rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 |
|
|
IXGBE_MRQC_RSS_FIELD_IPV4_TCP |
|
|
IXGBE_MRQC_RSS_FIELD_IPV6 |
|
|
IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
|
|
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP)
|
|
rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP)
|
|
rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
|
|
|
|
netdev_rss_key_fill(rss_key, sizeof(rss_key));
|
|
if ((hw->mac.type >= ixgbe_mac_X550) &&
|
|
(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) {
|
|
unsigned int pf_pool = adapter->num_vfs;
|
|
|
|
/* Enable VF RSS mode */
|
|
mrqc |= IXGBE_MRQC_MULTIPLE_RSS;
|
|
IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
|
|
|
|
/* Setup RSS through the VF registers */
|
|
ixgbe_setup_vfreta(adapter, rss_key);
|
|
vfmrqc = IXGBE_MRQC_RSSEN;
|
|
vfmrqc |= rss_field;
|
|
IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(pf_pool), vfmrqc);
|
|
} else {
|
|
ixgbe_setup_reta(adapter, rss_key);
|
|
mrqc |= rss_field;
|
|
IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_configure_rscctl - enable RSC for the indicated ring
|
|
* @adapter: address of board private structure
|
|
* @index: index of ring to set
|
|
**/
|
|
static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 rscctrl;
|
|
u8 reg_idx = ring->reg_idx;
|
|
|
|
if (!ring_is_rsc_enabled(ring))
|
|
return;
|
|
|
|
rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
|
|
rscctrl |= IXGBE_RSCCTL_RSCEN;
|
|
/*
|
|
* we must limit the number of descriptors so that the
|
|
* total size of max desc * buf_len is not greater
|
|
* than 65536
|
|
*/
|
|
rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
|
|
}
|
|
|
|
#define IXGBE_MAX_RX_DESC_POLL 10
|
|
static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int wait_loop = IXGBE_MAX_RX_DESC_POLL;
|
|
u32 rxdctl;
|
|
u8 reg_idx = ring->reg_idx;
|
|
|
|
if (ixgbe_removed(hw->hw_addr))
|
|
return;
|
|
/* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
|
|
if (hw->mac.type == ixgbe_mac_82598EB &&
|
|
!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
|
|
return;
|
|
|
|
do {
|
|
usleep_range(1000, 2000);
|
|
rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
|
|
} while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
|
|
|
|
if (!wait_loop) {
|
|
e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
|
|
"the polling period\n", reg_idx);
|
|
}
|
|
}
|
|
|
|
void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int wait_loop = IXGBE_MAX_RX_DESC_POLL;
|
|
u32 rxdctl;
|
|
u8 reg_idx = ring->reg_idx;
|
|
|
|
if (ixgbe_removed(hw->hw_addr))
|
|
return;
|
|
rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
|
|
rxdctl &= ~IXGBE_RXDCTL_ENABLE;
|
|
|
|
/* write value back with RXDCTL.ENABLE bit cleared */
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB &&
|
|
!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
|
|
return;
|
|
|
|
/* the hardware may take up to 100us to really disable the rx queue */
|
|
do {
|
|
udelay(10);
|
|
rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
|
|
} while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE));
|
|
|
|
if (!wait_loop) {
|
|
e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within "
|
|
"the polling period\n", reg_idx);
|
|
}
|
|
}
|
|
|
|
void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u64 rdba = ring->dma;
|
|
u32 rxdctl;
|
|
u8 reg_idx = ring->reg_idx;
|
|
|
|
/* disable queue to avoid issues while updating state */
|
|
rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
|
|
ixgbe_disable_rx_queue(adapter, ring);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
|
|
IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
|
|
IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
|
|
ring->count * sizeof(union ixgbe_adv_rx_desc));
|
|
IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
|
|
ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx);
|
|
|
|
ixgbe_configure_srrctl(adapter, ring);
|
|
ixgbe_configure_rscctl(adapter, ring);
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB) {
|
|
/*
|
|
* enable cache line friendly hardware writes:
|
|
* PTHRESH=32 descriptors (half the internal cache),
|
|
* this also removes ugly rx_no_buffer_count increment
|
|
* HTHRESH=4 descriptors (to minimize latency on fetch)
|
|
* WTHRESH=8 burst writeback up to two cache lines
|
|
*/
|
|
rxdctl &= ~0x3FFFFF;
|
|
rxdctl |= 0x080420;
|
|
}
|
|
|
|
/* enable receive descriptor ring */
|
|
rxdctl |= IXGBE_RXDCTL_ENABLE;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
|
|
|
|
ixgbe_rx_desc_queue_enable(adapter, ring);
|
|
ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
|
|
}
|
|
|
|
static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int rss_i = adapter->ring_feature[RING_F_RSS].indices;
|
|
u16 pool;
|
|
|
|
/* PSRTYPE must be initialized in non 82598 adapters */
|
|
u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
|
|
IXGBE_PSRTYPE_UDPHDR |
|
|
IXGBE_PSRTYPE_IPV4HDR |
|
|
IXGBE_PSRTYPE_L2HDR |
|
|
IXGBE_PSRTYPE_IPV6HDR;
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
return;
|
|
|
|
if (rss_i > 3)
|
|
psrtype |= 2 << 29;
|
|
else if (rss_i > 1)
|
|
psrtype |= 1 << 29;
|
|
|
|
for_each_set_bit(pool, &adapter->fwd_bitmask, 32)
|
|
IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
|
|
}
|
|
|
|
static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 reg_offset, vf_shift;
|
|
u32 gcr_ext, vmdctl;
|
|
int i;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
|
|
return;
|
|
|
|
vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
|
|
vmdctl |= IXGBE_VMD_CTL_VMDQ_EN;
|
|
vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
|
|
vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT;
|
|
vmdctl |= IXGBE_VT_CTL_REPLEN;
|
|
IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
|
|
|
|
vf_shift = VMDQ_P(0) % 32;
|
|
reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0;
|
|
|
|
/* Enable only the PF's pool for Tx/Rx */
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (~0) << vf_shift);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (~0) << vf_shift);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1);
|
|
if (adapter->flags2 & IXGBE_FLAG2_BRIDGE_MODE_VEB)
|
|
IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
|
|
|
|
/* Map PF MAC address in RAR Entry 0 to first pool following VFs */
|
|
hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0));
|
|
|
|
/*
|
|
* Set up VF register offsets for selected VT Mode,
|
|
* i.e. 32 or 64 VFs for SR-IOV
|
|
*/
|
|
switch (adapter->ring_feature[RING_F_VMDQ].mask) {
|
|
case IXGBE_82599_VMDQ_8Q_MASK:
|
|
gcr_ext = IXGBE_GCR_EXT_VT_MODE_16;
|
|
break;
|
|
case IXGBE_82599_VMDQ_4Q_MASK:
|
|
gcr_ext = IXGBE_GCR_EXT_VT_MODE_32;
|
|
break;
|
|
default:
|
|
gcr_ext = IXGBE_GCR_EXT_VT_MODE_64;
|
|
break;
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
|
|
|
|
|
|
/* Enable MAC Anti-Spoofing */
|
|
hw->mac.ops.set_mac_anti_spoofing(hw, (adapter->num_vfs != 0),
|
|
adapter->num_vfs);
|
|
|
|
/* Ensure LLDP is set for Ethertype Antispoofing if we will be
|
|
* calling set_ethertype_anti_spoofing for each VF in loop below
|
|
*/
|
|
if (hw->mac.ops.set_ethertype_anti_spoofing)
|
|
IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
|
|
(IXGBE_ETQF_FILTER_EN | /* enable filter */
|
|
IXGBE_ETQF_TX_ANTISPOOF | /* tx antispoof */
|
|
IXGBE_ETH_P_LLDP)); /* LLDP eth type */
|
|
|
|
/* For VFs that have spoof checking turned off */
|
|
for (i = 0; i < adapter->num_vfs; i++) {
|
|
if (!adapter->vfinfo[i].spoofchk_enabled)
|
|
ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, false);
|
|
|
|
/* enable ethertype anti spoofing if hw supports it */
|
|
if (hw->mac.ops.set_ethertype_anti_spoofing)
|
|
hw->mac.ops.set_ethertype_anti_spoofing(hw, true, i);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
struct ixgbe_ring *rx_ring;
|
|
int i;
|
|
u32 mhadd, hlreg0;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* adjust max frame to be able to do baby jumbo for FCoE */
|
|
if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
|
|
(max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
|
|
max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
|
|
|
|
#endif /* IXGBE_FCOE */
|
|
|
|
/* adjust max frame to be at least the size of a standard frame */
|
|
if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
|
|
max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN);
|
|
|
|
mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
|
|
if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
|
|
mhadd &= ~IXGBE_MHADD_MFS_MASK;
|
|
mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
|
|
}
|
|
|
|
hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
|
|
/* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
|
|
hlreg0 |= IXGBE_HLREG0_JUMBOEN;
|
|
IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
|
|
|
|
/*
|
|
* Setup the HW Rx Head and Tail Descriptor Pointers and
|
|
* the Base and Length of the Rx Descriptor Ring
|
|
*/
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
rx_ring = adapter->rx_ring[i];
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
|
|
set_ring_rsc_enabled(rx_ring);
|
|
else
|
|
clear_ring_rsc_enabled(rx_ring);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
case ixgbe_mac_82598EB:
|
|
/*
|
|
* For VMDq support of different descriptor types or
|
|
* buffer sizes through the use of multiple SRRCTL
|
|
* registers, RDRXCTL.MVMEN must be set to 1
|
|
*
|
|
* also, the manual doesn't mention it clearly but DCA hints
|
|
* will only use queue 0's tags unless this bit is set. Side
|
|
* effects of setting this bit are only that SRRCTL must be
|
|
* fully programmed [0..15]
|
|
*/
|
|
rdrxctl |= IXGBE_RDRXCTL_MVMEN;
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
/* Disable RSC for ACK packets */
|
|
IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
|
|
(IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
|
|
rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
|
|
/* hardware requires some bits to be set by default */
|
|
rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
|
|
rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
|
|
break;
|
|
default:
|
|
/* We should do nothing since we don't know this hardware */
|
|
return;
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the Rx unit of the MAC after a reset.
|
|
**/
|
|
static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int i;
|
|
u32 rxctrl, rfctl;
|
|
|
|
/* disable receives while setting up the descriptors */
|
|
rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
|
|
|
|
ixgbe_setup_psrtype(adapter);
|
|
ixgbe_setup_rdrxctl(adapter);
|
|
|
|
/* RSC Setup */
|
|
rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
|
|
rfctl &= ~IXGBE_RFCTL_RSC_DIS;
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
|
|
rfctl |= IXGBE_RFCTL_RSC_DIS;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
|
|
|
|
/* Program registers for the distribution of queues */
|
|
ixgbe_setup_mrqc(adapter);
|
|
|
|
/* set_rx_buffer_len must be called before ring initialization */
|
|
ixgbe_set_rx_buffer_len(adapter);
|
|
|
|
/*
|
|
* Setup the HW Rx Head and Tail Descriptor Pointers and
|
|
* the Base and Length of the Rx Descriptor Ring
|
|
*/
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
|
|
|
|
/* disable drop enable for 82598 parts */
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
rxctrl |= IXGBE_RXCTRL_DMBYPS;
|
|
|
|
/* enable all receives */
|
|
rxctrl |= IXGBE_RXCTRL_RXEN;
|
|
hw->mac.ops.enable_rx_dma(hw, rxctrl);
|
|
}
|
|
|
|
static int ixgbe_vlan_rx_add_vid(struct net_device *netdev,
|
|
__be16 proto, u16 vid)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
/* add VID to filter table */
|
|
hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true);
|
|
set_bit(vid, adapter->active_vlans);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev,
|
|
__be16 proto, u16 vid)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
/* remove VID from filter table */
|
|
hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), false);
|
|
clear_bit(vid, adapter->active_vlans);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
|
|
* @adapter: driver data
|
|
*/
|
|
static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 vlnctrl;
|
|
int i, j;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
|
|
vlnctrl &= ~IXGBE_VLNCTRL_VME;
|
|
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct ixgbe_ring *ring = adapter->rx_ring[i];
|
|
|
|
if (ring->l2_accel_priv)
|
|
continue;
|
|
j = ring->reg_idx;
|
|
vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
|
|
vlnctrl &= ~IXGBE_RXDCTL_VME;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
|
|
* @adapter: driver data
|
|
*/
|
|
static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 vlnctrl;
|
|
int i, j;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
|
|
vlnctrl |= IXGBE_VLNCTRL_VME;
|
|
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct ixgbe_ring *ring = adapter->rx_ring[i];
|
|
|
|
if (ring->l2_accel_priv)
|
|
continue;
|
|
j = ring->reg_idx;
|
|
vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
|
|
vlnctrl |= IXGBE_RXDCTL_VME;
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
|
|
{
|
|
u16 vid;
|
|
|
|
ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0);
|
|
|
|
for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
|
|
ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_write_mc_addr_list - write multicast addresses to MTA
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Writes multicast address list to the MTA hash table.
|
|
* Returns: -ENOMEM on failure
|
|
* 0 on no addresses written
|
|
* X on writing X addresses to MTA
|
|
**/
|
|
static int ixgbe_write_mc_addr_list(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
if (!netif_running(netdev))
|
|
return 0;
|
|
|
|
if (hw->mac.ops.update_mc_addr_list)
|
|
hw->mac.ops.update_mc_addr_list(hw, netdev);
|
|
else
|
|
return -ENOMEM;
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
ixgbe_restore_vf_multicasts(adapter);
|
|
#endif
|
|
|
|
return netdev_mc_count(netdev);
|
|
}
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int i;
|
|
for (i = 0; i < hw->mac.num_rar_entries; i++) {
|
|
if (adapter->mac_table[i].state & IXGBE_MAC_STATE_IN_USE)
|
|
hw->mac.ops.set_rar(hw, i, adapter->mac_table[i].addr,
|
|
adapter->mac_table[i].queue,
|
|
IXGBE_RAH_AV);
|
|
else
|
|
hw->mac.ops.clear_rar(hw, i);
|
|
|
|
adapter->mac_table[i].state &= ~(IXGBE_MAC_STATE_MODIFIED);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int i;
|
|
for (i = 0; i < hw->mac.num_rar_entries; i++) {
|
|
if (adapter->mac_table[i].state & IXGBE_MAC_STATE_MODIFIED) {
|
|
if (adapter->mac_table[i].state &
|
|
IXGBE_MAC_STATE_IN_USE)
|
|
hw->mac.ops.set_rar(hw, i,
|
|
adapter->mac_table[i].addr,
|
|
adapter->mac_table[i].queue,
|
|
IXGBE_RAH_AV);
|
|
else
|
|
hw->mac.ops.clear_rar(hw, i);
|
|
|
|
adapter->mac_table[i].state &=
|
|
~(IXGBE_MAC_STATE_MODIFIED);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
for (i = 0; i < hw->mac.num_rar_entries; i++) {
|
|
adapter->mac_table[i].state |= IXGBE_MAC_STATE_MODIFIED;
|
|
adapter->mac_table[i].state &= ~IXGBE_MAC_STATE_IN_USE;
|
|
memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
|
|
adapter->mac_table[i].queue = 0;
|
|
}
|
|
ixgbe_sync_mac_table(adapter);
|
|
}
|
|
|
|
static int ixgbe_available_rars(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int i, count = 0;
|
|
|
|
for (i = 0; i < hw->mac.num_rar_entries; i++) {
|
|
if (adapter->mac_table[i].state == 0)
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/* this function destroys the first RAR entry */
|
|
static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter,
|
|
u8 *addr)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
memcpy(&adapter->mac_table[0].addr, addr, ETH_ALEN);
|
|
adapter->mac_table[0].queue = VMDQ_P(0);
|
|
adapter->mac_table[0].state = (IXGBE_MAC_STATE_DEFAULT |
|
|
IXGBE_MAC_STATE_IN_USE);
|
|
hw->mac.ops.set_rar(hw, 0, adapter->mac_table[0].addr,
|
|
adapter->mac_table[0].queue,
|
|
IXGBE_RAH_AV);
|
|
}
|
|
|
|
int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, u8 *addr, u16 queue)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int i;
|
|
|
|
if (is_zero_ether_addr(addr))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < hw->mac.num_rar_entries; i++) {
|
|
if (adapter->mac_table[i].state & IXGBE_MAC_STATE_IN_USE)
|
|
continue;
|
|
adapter->mac_table[i].state |= (IXGBE_MAC_STATE_MODIFIED |
|
|
IXGBE_MAC_STATE_IN_USE);
|
|
ether_addr_copy(adapter->mac_table[i].addr, addr);
|
|
adapter->mac_table[i].queue = queue;
|
|
ixgbe_sync_mac_table(adapter);
|
|
return i;
|
|
}
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, u8 *addr, u16 queue)
|
|
{
|
|
/* search table for addr, if found, set to 0 and sync */
|
|
int i;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
if (is_zero_ether_addr(addr))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < hw->mac.num_rar_entries; i++) {
|
|
if (ether_addr_equal(addr, adapter->mac_table[i].addr) &&
|
|
adapter->mac_table[i].queue == queue) {
|
|
adapter->mac_table[i].state |= IXGBE_MAC_STATE_MODIFIED;
|
|
adapter->mac_table[i].state &= ~IXGBE_MAC_STATE_IN_USE;
|
|
memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
|
|
adapter->mac_table[i].queue = 0;
|
|
ixgbe_sync_mac_table(adapter);
|
|
return 0;
|
|
}
|
|
}
|
|
return -ENOMEM;
|
|
}
|
|
/**
|
|
* ixgbe_write_uc_addr_list - write unicast addresses to RAR table
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Writes unicast address list to the RAR table.
|
|
* Returns: -ENOMEM on failure/insufficient address space
|
|
* 0 on no addresses written
|
|
* X on writing X addresses to the RAR table
|
|
**/
|
|
static int ixgbe_write_uc_addr_list(struct net_device *netdev, int vfn)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
int count = 0;
|
|
|
|
/* return ENOMEM indicating insufficient memory for addresses */
|
|
if (netdev_uc_count(netdev) > ixgbe_available_rars(adapter))
|
|
return -ENOMEM;
|
|
|
|
if (!netdev_uc_empty(netdev)) {
|
|
struct netdev_hw_addr *ha;
|
|
netdev_for_each_uc_addr(ha, netdev) {
|
|
ixgbe_del_mac_filter(adapter, ha->addr, vfn);
|
|
ixgbe_add_mac_filter(adapter, ha->addr, vfn);
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
|
|
* @netdev: network interface device structure
|
|
*
|
|
* The set_rx_method entry point is called whenever the unicast/multicast
|
|
* address list or the network interface flags are updated. This routine is
|
|
* responsible for configuring the hardware for proper unicast, multicast and
|
|
* promiscuous mode.
|
|
**/
|
|
void ixgbe_set_rx_mode(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
|
|
u32 vlnctrl;
|
|
int count;
|
|
|
|
/* Check for Promiscuous and All Multicast modes */
|
|
fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
|
|
vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
|
|
|
|
/* set all bits that we expect to always be set */
|
|
fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */
|
|
fctrl |= IXGBE_FCTRL_BAM;
|
|
fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
|
|
fctrl |= IXGBE_FCTRL_PMCF;
|
|
|
|
/* clear the bits we are changing the status of */
|
|
fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
|
|
vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
|
|
if (netdev->flags & IFF_PROMISC) {
|
|
hw->addr_ctrl.user_set_promisc = true;
|
|
fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
|
|
vmolr |= IXGBE_VMOLR_MPE;
|
|
/* Only disable hardware filter vlans in promiscuous mode
|
|
* if SR-IOV and VMDQ are disabled - otherwise ensure
|
|
* that hardware VLAN filters remain enabled.
|
|
*/
|
|
if (adapter->flags & (IXGBE_FLAG_VMDQ_ENABLED |
|
|
IXGBE_FLAG_SRIOV_ENABLED))
|
|
vlnctrl |= (IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
|
|
} else {
|
|
if (netdev->flags & IFF_ALLMULTI) {
|
|
fctrl |= IXGBE_FCTRL_MPE;
|
|
vmolr |= IXGBE_VMOLR_MPE;
|
|
}
|
|
vlnctrl |= IXGBE_VLNCTRL_VFE;
|
|
hw->addr_ctrl.user_set_promisc = false;
|
|
}
|
|
|
|
/*
|
|
* Write addresses to available RAR registers, if there is not
|
|
* sufficient space to store all the addresses then enable
|
|
* unicast promiscuous mode
|
|
*/
|
|
count = ixgbe_write_uc_addr_list(netdev, VMDQ_P(0));
|
|
if (count < 0) {
|
|
fctrl |= IXGBE_FCTRL_UPE;
|
|
vmolr |= IXGBE_VMOLR_ROPE;
|
|
}
|
|
|
|
/* Write addresses to the MTA, if the attempt fails
|
|
* then we should just turn on promiscuous mode so
|
|
* that we can at least receive multicast traffic
|
|
*/
|
|
count = ixgbe_write_mc_addr_list(netdev);
|
|
if (count < 0) {
|
|
fctrl |= IXGBE_FCTRL_MPE;
|
|
vmolr |= IXGBE_VMOLR_MPE;
|
|
} else if (count) {
|
|
vmolr |= IXGBE_VMOLR_ROMPE;
|
|
}
|
|
|
|
if (hw->mac.type != ixgbe_mac_82598EB) {
|
|
vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) &
|
|
~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
|
|
IXGBE_VMOLR_ROPE);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr);
|
|
}
|
|
|
|
/* This is useful for sniffing bad packets. */
|
|
if (adapter->netdev->features & NETIF_F_RXALL) {
|
|
/* UPE and MPE will be handled by normal PROMISC logic
|
|
* in e1000e_set_rx_mode */
|
|
fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */
|
|
IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */
|
|
IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */
|
|
|
|
fctrl &= ~(IXGBE_FCTRL_DPF);
|
|
/* NOTE: VLAN filtering is disabled by setting PROMISC */
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
|
|
|
|
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
|
|
ixgbe_vlan_strip_enable(adapter);
|
|
else
|
|
ixgbe_vlan_strip_disable(adapter);
|
|
}
|
|
|
|
static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
|
|
{
|
|
int q_idx;
|
|
|
|
for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
|
|
ixgbe_qv_init_lock(adapter->q_vector[q_idx]);
|
|
napi_enable(&adapter->q_vector[q_idx]->napi);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
|
|
{
|
|
int q_idx;
|
|
|
|
for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
|
|
napi_disable(&adapter->q_vector[q_idx]->napi);
|
|
while (!ixgbe_qv_disable(adapter->q_vector[q_idx])) {
|
|
pr_info("QV %d locked\n", q_idx);
|
|
usleep_range(1000, 20000);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
/**
|
|
* ixgbe_configure_dcb - Configure DCB hardware
|
|
* @adapter: ixgbe adapter struct
|
|
*
|
|
* This is called by the driver on open to configure the DCB hardware.
|
|
* This is also called by the gennetlink interface when reconfiguring
|
|
* the DCB state.
|
|
*/
|
|
static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
netif_set_gso_max_size(adapter->netdev, 65536);
|
|
return;
|
|
}
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
netif_set_gso_max_size(adapter->netdev, 32768);
|
|
|
|
#ifdef IXGBE_FCOE
|
|
if (adapter->netdev->features & NETIF_F_FCOE_MTU)
|
|
max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
|
|
#endif
|
|
|
|
/* reconfigure the hardware */
|
|
if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) {
|
|
ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
|
|
DCB_TX_CONFIG);
|
|
ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
|
|
DCB_RX_CONFIG);
|
|
ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
|
|
} else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) {
|
|
ixgbe_dcb_hw_ets(&adapter->hw,
|
|
adapter->ixgbe_ieee_ets,
|
|
max_frame);
|
|
ixgbe_dcb_hw_pfc_config(&adapter->hw,
|
|
adapter->ixgbe_ieee_pfc->pfc_en,
|
|
adapter->ixgbe_ieee_ets->prio_tc);
|
|
}
|
|
|
|
/* Enable RSS Hash per TC */
|
|
if (hw->mac.type != ixgbe_mac_82598EB) {
|
|
u32 msb = 0;
|
|
u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1;
|
|
|
|
while (rss_i) {
|
|
msb++;
|
|
rss_i >>= 1;
|
|
}
|
|
|
|
/* write msb to all 8 TCs in one write */
|
|
IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Additional bittime to account for IXGBE framing */
|
|
#define IXGBE_ETH_FRAMING 20
|
|
|
|
/**
|
|
* ixgbe_hpbthresh - calculate high water mark for flow control
|
|
*
|
|
* @adapter: board private structure to calculate for
|
|
* @pb: packet buffer to calculate
|
|
*/
|
|
static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct net_device *dev = adapter->netdev;
|
|
int link, tc, kb, marker;
|
|
u32 dv_id, rx_pba;
|
|
|
|
/* Calculate max LAN frame size */
|
|
tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* FCoE traffic class uses FCOE jumbo frames */
|
|
if ((dev->features & NETIF_F_FCOE_MTU) &&
|
|
(tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
|
|
(pb == ixgbe_fcoe_get_tc(adapter)))
|
|
tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
|
|
#endif
|
|
|
|
/* Calculate delay value for device */
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
dv_id = IXGBE_DV_X540(link, tc);
|
|
break;
|
|
default:
|
|
dv_id = IXGBE_DV(link, tc);
|
|
break;
|
|
}
|
|
|
|
/* Loopback switch introduces additional latency */
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
|
|
dv_id += IXGBE_B2BT(tc);
|
|
|
|
/* Delay value is calculated in bit times convert to KB */
|
|
kb = IXGBE_BT2KB(dv_id);
|
|
rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10;
|
|
|
|
marker = rx_pba - kb;
|
|
|
|
/* It is possible that the packet buffer is not large enough
|
|
* to provide required headroom. In this case throw an error
|
|
* to user and a do the best we can.
|
|
*/
|
|
if (marker < 0) {
|
|
e_warn(drv, "Packet Buffer(%i) can not provide enough"
|
|
"headroom to support flow control."
|
|
"Decrease MTU or number of traffic classes\n", pb);
|
|
marker = tc + 1;
|
|
}
|
|
|
|
return marker;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_lpbthresh - calculate low water mark for for flow control
|
|
*
|
|
* @adapter: board private structure to calculate for
|
|
* @pb: packet buffer to calculate
|
|
*/
|
|
static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct net_device *dev = adapter->netdev;
|
|
int tc;
|
|
u32 dv_id;
|
|
|
|
/* Calculate max LAN frame size */
|
|
tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* FCoE traffic class uses FCOE jumbo frames */
|
|
if ((dev->features & NETIF_F_FCOE_MTU) &&
|
|
(tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
|
|
(pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up)))
|
|
tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
|
|
#endif
|
|
|
|
/* Calculate delay value for device */
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
dv_id = IXGBE_LOW_DV_X540(tc);
|
|
break;
|
|
default:
|
|
dv_id = IXGBE_LOW_DV(tc);
|
|
break;
|
|
}
|
|
|
|
/* Delay value is calculated in bit times convert to KB */
|
|
return IXGBE_BT2KB(dv_id);
|
|
}
|
|
|
|
/*
|
|
* ixgbe_pbthresh_setup - calculate and setup high low water marks
|
|
*/
|
|
static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int num_tc = netdev_get_num_tc(adapter->netdev);
|
|
int i;
|
|
|
|
if (!num_tc)
|
|
num_tc = 1;
|
|
|
|
for (i = 0; i < num_tc; i++) {
|
|
hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i);
|
|
hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i);
|
|
|
|
/* Low water marks must not be larger than high water marks */
|
|
if (hw->fc.low_water[i] > hw->fc.high_water[i])
|
|
hw->fc.low_water[i] = 0;
|
|
}
|
|
|
|
for (; i < MAX_TRAFFIC_CLASS; i++)
|
|
hw->fc.high_water[i] = 0;
|
|
}
|
|
|
|
static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int hdrm;
|
|
u8 tc = netdev_get_num_tc(adapter->netdev);
|
|
|
|
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
|
|
adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
|
|
hdrm = 32 << adapter->fdir_pballoc;
|
|
else
|
|
hdrm = 0;
|
|
|
|
hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL);
|
|
ixgbe_pbthresh_setup(adapter);
|
|
}
|
|
|
|
static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct hlist_node *node2;
|
|
struct ixgbe_fdir_filter *filter;
|
|
|
|
spin_lock(&adapter->fdir_perfect_lock);
|
|
|
|
if (!hlist_empty(&adapter->fdir_filter_list))
|
|
ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
|
|
|
|
hlist_for_each_entry_safe(filter, node2,
|
|
&adapter->fdir_filter_list, fdir_node) {
|
|
ixgbe_fdir_write_perfect_filter_82599(hw,
|
|
&filter->filter,
|
|
filter->sw_idx,
|
|
(filter->action == IXGBE_FDIR_DROP_QUEUE) ?
|
|
IXGBE_FDIR_DROP_QUEUE :
|
|
adapter->rx_ring[filter->action]->reg_idx);
|
|
}
|
|
|
|
spin_unlock(&adapter->fdir_perfect_lock);
|
|
}
|
|
|
|
static void ixgbe_macvlan_set_rx_mode(struct net_device *dev, unsigned int pool,
|
|
struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 vmolr;
|
|
|
|
/* No unicast promiscuous support for VMDQ devices. */
|
|
vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(pool));
|
|
vmolr |= (IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
|
|
|
|
/* clear the affected bit */
|
|
vmolr &= ~IXGBE_VMOLR_MPE;
|
|
|
|
if (dev->flags & IFF_ALLMULTI) {
|
|
vmolr |= IXGBE_VMOLR_MPE;
|
|
} else {
|
|
vmolr |= IXGBE_VMOLR_ROMPE;
|
|
hw->mac.ops.update_mc_addr_list(hw, dev);
|
|
}
|
|
ixgbe_write_uc_addr_list(adapter->netdev, pool);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VMOLR(pool), vmolr);
|
|
}
|
|
|
|
static void ixgbe_fwd_psrtype(struct ixgbe_fwd_adapter *vadapter)
|
|
{
|
|
struct ixgbe_adapter *adapter = vadapter->real_adapter;
|
|
int rss_i = adapter->num_rx_queues_per_pool;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u16 pool = vadapter->pool;
|
|
u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
|
|
IXGBE_PSRTYPE_UDPHDR |
|
|
IXGBE_PSRTYPE_IPV4HDR |
|
|
IXGBE_PSRTYPE_L2HDR |
|
|
IXGBE_PSRTYPE_IPV6HDR;
|
|
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
return;
|
|
|
|
if (rss_i > 3)
|
|
psrtype |= 2 << 29;
|
|
else if (rss_i > 1)
|
|
psrtype |= 1 << 29;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clean_rx_ring - Free Rx Buffers per Queue
|
|
* @rx_ring: ring to free buffers from
|
|
**/
|
|
static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
|
|
{
|
|
struct device *dev = rx_ring->dev;
|
|
unsigned long size;
|
|
u16 i;
|
|
|
|
/* ring already cleared, nothing to do */
|
|
if (!rx_ring->rx_buffer_info)
|
|
return;
|
|
|
|
/* Free all the Rx ring sk_buffs */
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i];
|
|
|
|
if (rx_buffer->skb) {
|
|
struct sk_buff *skb = rx_buffer->skb;
|
|
if (IXGBE_CB(skb)->page_released)
|
|
dma_unmap_page(dev,
|
|
IXGBE_CB(skb)->dma,
|
|
ixgbe_rx_bufsz(rx_ring),
|
|
DMA_FROM_DEVICE);
|
|
dev_kfree_skb(skb);
|
|
rx_buffer->skb = NULL;
|
|
}
|
|
|
|
if (!rx_buffer->page)
|
|
continue;
|
|
|
|
dma_unmap_page(dev, rx_buffer->dma,
|
|
ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
|
|
__free_pages(rx_buffer->page, ixgbe_rx_pg_order(rx_ring));
|
|
|
|
rx_buffer->page = NULL;
|
|
}
|
|
|
|
size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
|
|
memset(rx_ring->rx_buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
memset(rx_ring->desc, 0, rx_ring->size);
|
|
|
|
rx_ring->next_to_alloc = 0;
|
|
rx_ring->next_to_clean = 0;
|
|
rx_ring->next_to_use = 0;
|
|
}
|
|
|
|
static void ixgbe_disable_fwd_ring(struct ixgbe_fwd_adapter *vadapter,
|
|
struct ixgbe_ring *rx_ring)
|
|
{
|
|
struct ixgbe_adapter *adapter = vadapter->real_adapter;
|
|
int index = rx_ring->queue_index + vadapter->rx_base_queue;
|
|
|
|
/* shutdown specific queue receive and wait for dma to settle */
|
|
ixgbe_disable_rx_queue(adapter, rx_ring);
|
|
usleep_range(10000, 20000);
|
|
ixgbe_irq_disable_queues(adapter, ((u64)1 << index));
|
|
ixgbe_clean_rx_ring(rx_ring);
|
|
rx_ring->l2_accel_priv = NULL;
|
|
}
|
|
|
|
static int ixgbe_fwd_ring_down(struct net_device *vdev,
|
|
struct ixgbe_fwd_adapter *accel)
|
|
{
|
|
struct ixgbe_adapter *adapter = accel->real_adapter;
|
|
unsigned int rxbase = accel->rx_base_queue;
|
|
unsigned int txbase = accel->tx_base_queue;
|
|
int i;
|
|
|
|
netif_tx_stop_all_queues(vdev);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
|
|
ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]);
|
|
adapter->rx_ring[rxbase + i]->netdev = adapter->netdev;
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
|
|
adapter->tx_ring[txbase + i]->l2_accel_priv = NULL;
|
|
adapter->tx_ring[txbase + i]->netdev = adapter->netdev;
|
|
}
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ixgbe_fwd_ring_up(struct net_device *vdev,
|
|
struct ixgbe_fwd_adapter *accel)
|
|
{
|
|
struct ixgbe_adapter *adapter = accel->real_adapter;
|
|
unsigned int rxbase, txbase, queues;
|
|
int i, baseq, err = 0;
|
|
|
|
if (!test_bit(accel->pool, &adapter->fwd_bitmask))
|
|
return 0;
|
|
|
|
baseq = accel->pool * adapter->num_rx_queues_per_pool;
|
|
netdev_dbg(vdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
|
|
accel->pool, adapter->num_rx_pools,
|
|
baseq, baseq + adapter->num_rx_queues_per_pool,
|
|
adapter->fwd_bitmask);
|
|
|
|
accel->netdev = vdev;
|
|
accel->rx_base_queue = rxbase = baseq;
|
|
accel->tx_base_queue = txbase = baseq;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues_per_pool; i++)
|
|
ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
|
|
adapter->rx_ring[rxbase + i]->netdev = vdev;
|
|
adapter->rx_ring[rxbase + i]->l2_accel_priv = accel;
|
|
ixgbe_configure_rx_ring(adapter, adapter->rx_ring[rxbase + i]);
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
|
|
adapter->tx_ring[txbase + i]->netdev = vdev;
|
|
adapter->tx_ring[txbase + i]->l2_accel_priv = accel;
|
|
}
|
|
|
|
queues = min_t(unsigned int,
|
|
adapter->num_rx_queues_per_pool, vdev->num_tx_queues);
|
|
err = netif_set_real_num_tx_queues(vdev, queues);
|
|
if (err)
|
|
goto fwd_queue_err;
|
|
|
|
err = netif_set_real_num_rx_queues(vdev, queues);
|
|
if (err)
|
|
goto fwd_queue_err;
|
|
|
|
if (is_valid_ether_addr(vdev->dev_addr))
|
|
ixgbe_add_mac_filter(adapter, vdev->dev_addr, accel->pool);
|
|
|
|
ixgbe_fwd_psrtype(accel);
|
|
ixgbe_macvlan_set_rx_mode(vdev, accel->pool, adapter);
|
|
return err;
|
|
fwd_queue_err:
|
|
ixgbe_fwd_ring_down(vdev, accel);
|
|
return err;
|
|
}
|
|
|
|
static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *upper;
|
|
struct list_head *iter;
|
|
int err;
|
|
|
|
netdev_for_each_all_upper_dev_rcu(adapter->netdev, upper, iter) {
|
|
if (netif_is_macvlan(upper)) {
|
|
struct macvlan_dev *dfwd = netdev_priv(upper);
|
|
struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv;
|
|
|
|
if (dfwd->fwd_priv) {
|
|
err = ixgbe_fwd_ring_up(upper, vadapter);
|
|
if (err)
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ixgbe_configure(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
ixgbe_configure_pb(adapter);
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
ixgbe_configure_dcb(adapter);
|
|
#endif
|
|
/*
|
|
* We must restore virtualization before VLANs or else
|
|
* the VLVF registers will not be populated
|
|
*/
|
|
ixgbe_configure_virtualization(adapter);
|
|
|
|
ixgbe_set_rx_mode(adapter->netdev);
|
|
ixgbe_restore_vlan(adapter);
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
hw->mac.ops.disable_rx_buff(hw);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
|
|
ixgbe_init_fdir_signature_82599(&adapter->hw,
|
|
adapter->fdir_pballoc);
|
|
} else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
|
|
ixgbe_init_fdir_perfect_82599(&adapter->hw,
|
|
adapter->fdir_pballoc);
|
|
ixgbe_fdir_filter_restore(adapter);
|
|
}
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
hw->mac.ops.enable_rx_buff(hw);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* configure FCoE L2 filters, redirection table, and Rx control */
|
|
ixgbe_configure_fcoe(adapter);
|
|
|
|
#endif /* IXGBE_FCOE */
|
|
ixgbe_configure_tx(adapter);
|
|
ixgbe_configure_rx(adapter);
|
|
ixgbe_configure_dfwd(adapter);
|
|
}
|
|
|
|
static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
|
|
{
|
|
switch (hw->phy.type) {
|
|
case ixgbe_phy_sfp_avago:
|
|
case ixgbe_phy_sfp_ftl:
|
|
case ixgbe_phy_sfp_intel:
|
|
case ixgbe_phy_sfp_unknown:
|
|
case ixgbe_phy_sfp_passive_tyco:
|
|
case ixgbe_phy_sfp_passive_unknown:
|
|
case ixgbe_phy_sfp_active_unknown:
|
|
case ixgbe_phy_sfp_ftl_active:
|
|
case ixgbe_phy_qsfp_passive_unknown:
|
|
case ixgbe_phy_qsfp_active_unknown:
|
|
case ixgbe_phy_qsfp_intel:
|
|
case ixgbe_phy_qsfp_unknown:
|
|
/* ixgbe_phy_none is set when no SFP module is present */
|
|
case ixgbe_phy_none:
|
|
return true;
|
|
case ixgbe_phy_nl:
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_sfp_link_config - set up SFP+ link
|
|
* @adapter: pointer to private adapter struct
|
|
**/
|
|
static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
|
|
{
|
|
/*
|
|
* We are assuming the worst case scenario here, and that
|
|
* is that an SFP was inserted/removed after the reset
|
|
* but before SFP detection was enabled. As such the best
|
|
* solution is to just start searching as soon as we start
|
|
*/
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB)
|
|
adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
|
|
|
|
adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_non_sfp_link_config - set up non-SFP+ link
|
|
* @hw: pointer to private hardware struct
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
|
|
{
|
|
u32 speed;
|
|
bool autoneg, link_up = false;
|
|
u32 ret = IXGBE_ERR_LINK_SETUP;
|
|
|
|
if (hw->mac.ops.check_link)
|
|
ret = hw->mac.ops.check_link(hw, &speed, &link_up, false);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
speed = hw->phy.autoneg_advertised;
|
|
if ((!speed) && (hw->mac.ops.get_link_capabilities))
|
|
ret = hw->mac.ops.get_link_capabilities(hw, &speed,
|
|
&autoneg);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (hw->mac.ops.setup_link)
|
|
ret = hw->mac.ops.setup_link(hw, speed, link_up);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 gpie = 0;
|
|
|
|
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
|
|
gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
|
|
IXGBE_GPIE_OCD;
|
|
gpie |= IXGBE_GPIE_EIAME;
|
|
/*
|
|
* use EIAM to auto-mask when MSI-X interrupt is asserted
|
|
* this saves a register write for every interrupt
|
|
*/
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
default:
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
|
|
break;
|
|
}
|
|
} else {
|
|
/* legacy interrupts, use EIAM to auto-mask when reading EICR,
|
|
* specifically only auto mask tx and rx interrupts */
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
|
|
}
|
|
|
|
/* XXX: to interrupt immediately for EICS writes, enable this */
|
|
/* gpie |= IXGBE_GPIE_EIMEN; */
|
|
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
|
|
gpie &= ~IXGBE_GPIE_VTMODE_MASK;
|
|
|
|
switch (adapter->ring_feature[RING_F_VMDQ].mask) {
|
|
case IXGBE_82599_VMDQ_8Q_MASK:
|
|
gpie |= IXGBE_GPIE_VTMODE_16;
|
|
break;
|
|
case IXGBE_82599_VMDQ_4Q_MASK:
|
|
gpie |= IXGBE_GPIE_VTMODE_32;
|
|
break;
|
|
default:
|
|
gpie |= IXGBE_GPIE_VTMODE_64;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Enable Thermal over heat sensor interrupt */
|
|
if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
gpie |= IXGBE_SDP0_GPIEN;
|
|
break;
|
|
case ixgbe_mac_X540:
|
|
gpie |= IXGBE_EIMS_TS;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Enable fan failure interrupt */
|
|
if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
|
|
gpie |= IXGBE_SDP1_GPIEN;
|
|
|
|
if (hw->mac.type == ixgbe_mac_82599EB) {
|
|
gpie |= IXGBE_SDP1_GPIEN;
|
|
gpie |= IXGBE_SDP2_GPIEN;
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
|
|
}
|
|
|
|
static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int err;
|
|
u32 ctrl_ext;
|
|
|
|
ixgbe_get_hw_control(adapter);
|
|
ixgbe_setup_gpie(adapter);
|
|
|
|
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
|
|
ixgbe_configure_msix(adapter);
|
|
else
|
|
ixgbe_configure_msi_and_legacy(adapter);
|
|
|
|
/* enable the optics for 82599 SFP+ fiber */
|
|
if (hw->mac.ops.enable_tx_laser)
|
|
hw->mac.ops.enable_tx_laser(hw);
|
|
|
|
smp_mb__before_atomic();
|
|
clear_bit(__IXGBE_DOWN, &adapter->state);
|
|
ixgbe_napi_enable_all(adapter);
|
|
|
|
if (ixgbe_is_sfp(hw)) {
|
|
ixgbe_sfp_link_config(adapter);
|
|
} else {
|
|
err = ixgbe_non_sfp_link_config(hw);
|
|
if (err)
|
|
e_err(probe, "link_config FAILED %d\n", err);
|
|
}
|
|
|
|
/* clear any pending interrupts, may auto mask */
|
|
IXGBE_READ_REG(hw, IXGBE_EICR);
|
|
ixgbe_irq_enable(adapter, true, true);
|
|
|
|
/*
|
|
* If this adapter has a fan, check to see if we had a failure
|
|
* before we enabled the interrupt.
|
|
*/
|
|
if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
|
|
u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
|
|
if (esdp & IXGBE_ESDP_SDP1)
|
|
e_crit(drv, "Fan has stopped, replace the adapter\n");
|
|
}
|
|
|
|
/* bring the link up in the watchdog, this could race with our first
|
|
* link up interrupt but shouldn't be a problem */
|
|
adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
|
|
adapter->link_check_timeout = jiffies;
|
|
mod_timer(&adapter->service_timer, jiffies);
|
|
|
|
/* Set PF Reset Done bit so PF/VF Mail Ops can work */
|
|
ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
|
|
ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
|
|
IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
|
|
}
|
|
|
|
void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
|
|
{
|
|
WARN_ON(in_interrupt());
|
|
/* put off any impending NetWatchDogTimeout */
|
|
adapter->netdev->trans_start = jiffies;
|
|
|
|
while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
|
|
usleep_range(1000, 2000);
|
|
ixgbe_down(adapter);
|
|
/*
|
|
* If SR-IOV enabled then wait a bit before bringing the adapter
|
|
* back up to give the VFs time to respond to the reset. The
|
|
* two second wait is based upon the watchdog timer cycle in
|
|
* the VF driver.
|
|
*/
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
|
|
msleep(2000);
|
|
ixgbe_up(adapter);
|
|
clear_bit(__IXGBE_RESETTING, &adapter->state);
|
|
}
|
|
|
|
void ixgbe_up(struct ixgbe_adapter *adapter)
|
|
{
|
|
/* hardware has been reset, we need to reload some things */
|
|
ixgbe_configure(adapter);
|
|
|
|
ixgbe_up_complete(adapter);
|
|
}
|
|
|
|
void ixgbe_reset(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
int err;
|
|
u8 old_addr[ETH_ALEN];
|
|
|
|
if (ixgbe_removed(hw->hw_addr))
|
|
return;
|
|
/* lock SFP init bit to prevent race conditions with the watchdog */
|
|
while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
|
|
usleep_range(1000, 2000);
|
|
|
|
/* clear all SFP and link config related flags while holding SFP_INIT */
|
|
adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP |
|
|
IXGBE_FLAG2_SFP_NEEDS_RESET);
|
|
adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
|
|
|
|
err = hw->mac.ops.init_hw(hw);
|
|
switch (err) {
|
|
case 0:
|
|
case IXGBE_ERR_SFP_NOT_PRESENT:
|
|
case IXGBE_ERR_SFP_NOT_SUPPORTED:
|
|
break;
|
|
case IXGBE_ERR_MASTER_REQUESTS_PENDING:
|
|
e_dev_err("master disable timed out\n");
|
|
break;
|
|
case IXGBE_ERR_EEPROM_VERSION:
|
|
/* We are running on a pre-production device, log a warning */
|
|
e_dev_warn("This device is a pre-production adapter/LOM. "
|
|
"Please be aware there may be issues associated with "
|
|
"your hardware. If you are experiencing problems "
|
|
"please contact your Intel or hardware "
|
|
"representative who provided you with this "
|
|
"hardware.\n");
|
|
break;
|
|
default:
|
|
e_dev_err("Hardware Error: %d\n", err);
|
|
}
|
|
|
|
clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
|
|
/* do not flush user set addresses */
|
|
memcpy(old_addr, &adapter->mac_table[0].addr, netdev->addr_len);
|
|
ixgbe_flush_sw_mac_table(adapter);
|
|
ixgbe_mac_set_default_filter(adapter, old_addr);
|
|
|
|
/* update SAN MAC vmdq pool selection */
|
|
if (hw->mac.san_mac_rar_index)
|
|
hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
|
|
|
|
if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
|
|
ixgbe_ptp_reset(adapter);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clean_tx_ring - Free Tx Buffers
|
|
* @tx_ring: ring to be cleaned
|
|
**/
|
|
static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
|
|
{
|
|
struct ixgbe_tx_buffer *tx_buffer_info;
|
|
unsigned long size;
|
|
u16 i;
|
|
|
|
/* ring already cleared, nothing to do */
|
|
if (!tx_ring->tx_buffer_info)
|
|
return;
|
|
|
|
/* Free all the Tx ring sk_buffs */
|
|
for (i = 0; i < tx_ring->count; i++) {
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
|
|
}
|
|
|
|
netdev_tx_reset_queue(txring_txq(tx_ring));
|
|
|
|
size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
|
|
memset(tx_ring->tx_buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
memset(tx_ring->desc, 0, tx_ring->size);
|
|
|
|
tx_ring->next_to_use = 0;
|
|
tx_ring->next_to_clean = 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
|
|
* @adapter: board private structure
|
|
**/
|
|
static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
ixgbe_clean_rx_ring(adapter->rx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
|
|
* @adapter: board private structure
|
|
**/
|
|
static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
ixgbe_clean_tx_ring(adapter->tx_ring[i]);
|
|
}
|
|
|
|
static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct hlist_node *node2;
|
|
struct ixgbe_fdir_filter *filter;
|
|
|
|
spin_lock(&adapter->fdir_perfect_lock);
|
|
|
|
hlist_for_each_entry_safe(filter, node2,
|
|
&adapter->fdir_filter_list, fdir_node) {
|
|
hlist_del(&filter->fdir_node);
|
|
kfree(filter);
|
|
}
|
|
adapter->fdir_filter_count = 0;
|
|
|
|
spin_unlock(&adapter->fdir_perfect_lock);
|
|
}
|
|
|
|
void ixgbe_down(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct net_device *upper;
|
|
struct list_head *iter;
|
|
u32 rxctrl;
|
|
int i;
|
|
|
|
/* signal that we are down to the interrupt handler */
|
|
if (test_and_set_bit(__IXGBE_DOWN, &adapter->state))
|
|
return; /* do nothing if already down */
|
|
|
|
/* disable receives */
|
|
rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
|
|
|
|
/* disable all enabled rx queues */
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
/* this call also flushes the previous write */
|
|
ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]);
|
|
|
|
usleep_range(10000, 20000);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
|
|
/* call carrier off first to avoid false dev_watchdog timeouts */
|
|
netif_carrier_off(netdev);
|
|
netif_tx_disable(netdev);
|
|
|
|
/* disable any upper devices */
|
|
netdev_for_each_all_upper_dev_rcu(adapter->netdev, upper, iter) {
|
|
if (netif_is_macvlan(upper)) {
|
|
struct macvlan_dev *vlan = netdev_priv(upper);
|
|
|
|
if (vlan->fwd_priv) {
|
|
netif_tx_stop_all_queues(upper);
|
|
netif_carrier_off(upper);
|
|
netif_tx_disable(upper);
|
|
}
|
|
}
|
|
}
|
|
|
|
ixgbe_irq_disable(adapter);
|
|
|
|
ixgbe_napi_disable_all(adapter);
|
|
|
|
adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
|
|
IXGBE_FLAG2_RESET_REQUESTED);
|
|
adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
|
|
|
|
del_timer_sync(&adapter->service_timer);
|
|
|
|
if (adapter->num_vfs) {
|
|
/* Clear EITR Select mapping */
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
|
|
|
|
/* Mark all the VFs as inactive */
|
|
for (i = 0 ; i < adapter->num_vfs; i++)
|
|
adapter->vfinfo[i].clear_to_send = false;
|
|
|
|
/* ping all the active vfs to let them know we are going down */
|
|
ixgbe_ping_all_vfs(adapter);
|
|
|
|
/* Disable all VFTE/VFRE TX/RX */
|
|
ixgbe_disable_tx_rx(adapter);
|
|
}
|
|
|
|
/* disable transmits in the hardware now that interrupts are off */
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
u8 reg_idx = adapter->tx_ring[i]->reg_idx;
|
|
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
|
|
}
|
|
|
|
/* Disable the Tx DMA engine on 82599 and later MAC */
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
|
|
(IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
|
|
~IXGBE_DMATXCTL_TE));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!pci_channel_offline(adapter->pdev))
|
|
ixgbe_reset(adapter);
|
|
|
|
/* power down the optics for 82599 SFP+ fiber */
|
|
if (hw->mac.ops.disable_tx_laser)
|
|
hw->mac.ops.disable_tx_laser(hw);
|
|
|
|
ixgbe_clean_all_tx_rings(adapter);
|
|
ixgbe_clean_all_rx_rings(adapter);
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
/* since we reset the hardware DCA settings were cleared */
|
|
ixgbe_setup_dca(adapter);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* ixgbe_tx_timeout - Respond to a Tx Hang
|
|
* @netdev: network interface device structure
|
|
**/
|
|
static void ixgbe_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
ixgbe_tx_timeout_reset(adapter);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
|
|
* @adapter: board private structure to initialize
|
|
*
|
|
* ixgbe_sw_init initializes the Adapter private data structure.
|
|
* Fields are initialized based on PCI device information and
|
|
* OS network device settings (MTU size).
|
|
**/
|
|
static int ixgbe_sw_init(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
unsigned int rss, fdir;
|
|
u32 fwsm;
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
int j;
|
|
struct tc_configuration *tc;
|
|
#endif
|
|
|
|
/* PCI config space info */
|
|
|
|
hw->vendor_id = pdev->vendor;
|
|
hw->device_id = pdev->device;
|
|
hw->revision_id = pdev->revision;
|
|
hw->subsystem_vendor_id = pdev->subsystem_vendor;
|
|
hw->subsystem_device_id = pdev->subsystem_device;
|
|
|
|
/* Set common capability flags and settings */
|
|
rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus());
|
|
adapter->ring_feature[RING_F_RSS].limit = rss;
|
|
adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
|
|
adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
|
|
adapter->max_q_vectors = MAX_Q_VECTORS_82599;
|
|
adapter->atr_sample_rate = 20;
|
|
fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus());
|
|
adapter->ring_feature[RING_F_FDIR].limit = fdir;
|
|
adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K;
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
adapter->flags |= IXGBE_FLAG_DCA_CAPABLE;
|
|
#endif
|
|
#ifdef IXGBE_FCOE
|
|
adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
|
|
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
/* Default traffic class to use for FCoE */
|
|
adapter->fcoe.up = IXGBE_FCOE_DEFTC;
|
|
#endif /* CONFIG_IXGBE_DCB */
|
|
#endif /* IXGBE_FCOE */
|
|
|
|
adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) *
|
|
hw->mac.num_rar_entries,
|
|
GFP_ATOMIC);
|
|
|
|
/* Set MAC specific capability flags and exceptions */
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE;
|
|
adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
|
|
|
|
if (hw->device_id == IXGBE_DEV_ID_82598AT)
|
|
adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
|
|
|
|
adapter->max_q_vectors = MAX_Q_VECTORS_82598;
|
|
adapter->ring_feature[RING_F_FDIR].limit = 0;
|
|
adapter->atr_sample_rate = 0;
|
|
adapter->fdir_pballoc = 0;
|
|
#ifdef IXGBE_FCOE
|
|
adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
|
|
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
adapter->fcoe.up = 0;
|
|
#endif /* IXGBE_DCB */
|
|
#endif /* IXGBE_FCOE */
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
|
|
adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
|
|
break;
|
|
case ixgbe_mac_X540:
|
|
fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM);
|
|
if (fwsm & IXGBE_FWSM_TS_ENABLED)
|
|
adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
|
|
break;
|
|
case ixgbe_mac_X550EM_x:
|
|
case ixgbe_mac_X550:
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE;
|
|
#endif
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* FCoE support exists, always init the FCoE lock */
|
|
spin_lock_init(&adapter->fcoe.lock);
|
|
|
|
#endif
|
|
/* n-tuple support exists, always init our spinlock */
|
|
spin_lock_init(&adapter->fdir_perfect_lock);
|
|
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS;
|
|
adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS;
|
|
break;
|
|
default:
|
|
adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
|
|
adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
|
|
break;
|
|
}
|
|
|
|
/* Configure DCB traffic classes */
|
|
for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
|
|
tc = &adapter->dcb_cfg.tc_config[j];
|
|
tc->path[DCB_TX_CONFIG].bwg_id = 0;
|
|
tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
|
|
tc->path[DCB_RX_CONFIG].bwg_id = 0;
|
|
tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
|
|
tc->dcb_pfc = pfc_disabled;
|
|
}
|
|
|
|
/* Initialize default user to priority mapping, UPx->TC0 */
|
|
tc = &adapter->dcb_cfg.tc_config[0];
|
|
tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF;
|
|
tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF;
|
|
|
|
adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
|
|
adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
|
|
adapter->dcb_cfg.pfc_mode_enable = false;
|
|
adapter->dcb_set_bitmap = 0x00;
|
|
adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
|
|
memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
|
|
sizeof(adapter->temp_dcb_cfg));
|
|
|
|
#endif
|
|
|
|
/* default flow control settings */
|
|
hw->fc.requested_mode = ixgbe_fc_full;
|
|
hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
|
|
ixgbe_pbthresh_setup(adapter);
|
|
hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
|
|
hw->fc.send_xon = true;
|
|
hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw);
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
if (max_vfs > 0)
|
|
e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n");
|
|
|
|
/* assign number of SR-IOV VFs */
|
|
if (hw->mac.type != ixgbe_mac_82598EB) {
|
|
if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) {
|
|
adapter->num_vfs = 0;
|
|
e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n");
|
|
} else {
|
|
adapter->num_vfs = max_vfs;
|
|
}
|
|
}
|
|
#endif /* CONFIG_PCI_IOV */
|
|
|
|
/* enable itr by default in dynamic mode */
|
|
adapter->rx_itr_setting = 1;
|
|
adapter->tx_itr_setting = 1;
|
|
|
|
/* set default ring sizes */
|
|
adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
|
|
adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
|
|
|
|
/* set default work limits */
|
|
adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK;
|
|
|
|
/* initialize eeprom parameters */
|
|
if (ixgbe_init_eeprom_params_generic(hw)) {
|
|
e_dev_err("EEPROM initialization failed\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* PF holds first pool slot */
|
|
set_bit(0, &adapter->fwd_bitmask);
|
|
set_bit(__IXGBE_DOWN, &adapter->state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
|
|
* @tx_ring: tx descriptor ring (for a specific queue) to setup
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
|
|
{
|
|
struct device *dev = tx_ring->dev;
|
|
int orig_node = dev_to_node(dev);
|
|
int ring_node = -1;
|
|
int size;
|
|
|
|
size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
|
|
|
|
if (tx_ring->q_vector)
|
|
ring_node = tx_ring->q_vector->numa_node;
|
|
|
|
tx_ring->tx_buffer_info = vzalloc_node(size, ring_node);
|
|
if (!tx_ring->tx_buffer_info)
|
|
tx_ring->tx_buffer_info = vzalloc(size);
|
|
if (!tx_ring->tx_buffer_info)
|
|
goto err;
|
|
|
|
u64_stats_init(&tx_ring->syncp);
|
|
|
|
/* round up to nearest 4K */
|
|
tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
|
|
tx_ring->size = ALIGN(tx_ring->size, 4096);
|
|
|
|
set_dev_node(dev, ring_node);
|
|
tx_ring->desc = dma_alloc_coherent(dev,
|
|
tx_ring->size,
|
|
&tx_ring->dma,
|
|
GFP_KERNEL);
|
|
set_dev_node(dev, orig_node);
|
|
if (!tx_ring->desc)
|
|
tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
|
|
&tx_ring->dma, GFP_KERNEL);
|
|
if (!tx_ring->desc)
|
|
goto err;
|
|
|
|
tx_ring->next_to_use = 0;
|
|
tx_ring->next_to_clean = 0;
|
|
return 0;
|
|
|
|
err:
|
|
vfree(tx_ring->tx_buffer_info);
|
|
tx_ring->tx_buffer_info = NULL;
|
|
dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_setup_all_tx_resources - allocate all queues Tx resources
|
|
* @adapter: board private structure
|
|
*
|
|
* If this function returns with an error, then it's possible one or
|
|
* more of the rings is populated (while the rest are not). It is the
|
|
* callers duty to clean those orphaned rings.
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i, err = 0;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
|
|
if (!err)
|
|
continue;
|
|
|
|
e_err(probe, "Allocation for Tx Queue %u failed\n", i);
|
|
goto err_setup_tx;
|
|
}
|
|
|
|
return 0;
|
|
err_setup_tx:
|
|
/* rewind the index freeing the rings as we go */
|
|
while (i--)
|
|
ixgbe_free_tx_resources(adapter->tx_ring[i]);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
* @rx_ring: rx descriptor ring (for a specific queue) to setup
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring)
|
|
{
|
|
struct device *dev = rx_ring->dev;
|
|
int orig_node = dev_to_node(dev);
|
|
int ring_node = -1;
|
|
int size;
|
|
|
|
size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
|
|
|
|
if (rx_ring->q_vector)
|
|
ring_node = rx_ring->q_vector->numa_node;
|
|
|
|
rx_ring->rx_buffer_info = vzalloc_node(size, ring_node);
|
|
if (!rx_ring->rx_buffer_info)
|
|
rx_ring->rx_buffer_info = vzalloc(size);
|
|
if (!rx_ring->rx_buffer_info)
|
|
goto err;
|
|
|
|
u64_stats_init(&rx_ring->syncp);
|
|
|
|
/* Round up to nearest 4K */
|
|
rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
|
|
rx_ring->size = ALIGN(rx_ring->size, 4096);
|
|
|
|
set_dev_node(dev, ring_node);
|
|
rx_ring->desc = dma_alloc_coherent(dev,
|
|
rx_ring->size,
|
|
&rx_ring->dma,
|
|
GFP_KERNEL);
|
|
set_dev_node(dev, orig_node);
|
|
if (!rx_ring->desc)
|
|
rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
|
|
&rx_ring->dma, GFP_KERNEL);
|
|
if (!rx_ring->desc)
|
|
goto err;
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
rx_ring->next_to_use = 0;
|
|
|
|
return 0;
|
|
err:
|
|
vfree(rx_ring->rx_buffer_info);
|
|
rx_ring->rx_buffer_info = NULL;
|
|
dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_setup_all_rx_resources - allocate all queues Rx resources
|
|
* @adapter: board private structure
|
|
*
|
|
* If this function returns with an error, then it's possible one or
|
|
* more of the rings is populated (while the rest are not). It is the
|
|
* callers duty to clean those orphaned rings.
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i, err = 0;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
err = ixgbe_setup_rx_resources(adapter->rx_ring[i]);
|
|
if (!err)
|
|
continue;
|
|
|
|
e_err(probe, "Allocation for Rx Queue %u failed\n", i);
|
|
goto err_setup_rx;
|
|
}
|
|
|
|
#ifdef IXGBE_FCOE
|
|
err = ixgbe_setup_fcoe_ddp_resources(adapter);
|
|
if (!err)
|
|
#endif
|
|
return 0;
|
|
err_setup_rx:
|
|
/* rewind the index freeing the rings as we go */
|
|
while (i--)
|
|
ixgbe_free_rx_resources(adapter->rx_ring[i]);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_free_tx_resources - Free Tx Resources per Queue
|
|
* @tx_ring: Tx descriptor ring for a specific queue
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
|
|
{
|
|
ixgbe_clean_tx_ring(tx_ring);
|
|
|
|
vfree(tx_ring->tx_buffer_info);
|
|
tx_ring->tx_buffer_info = NULL;
|
|
|
|
/* if not set, then don't free */
|
|
if (!tx_ring->desc)
|
|
return;
|
|
|
|
dma_free_coherent(tx_ring->dev, tx_ring->size,
|
|
tx_ring->desc, tx_ring->dma);
|
|
|
|
tx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
if (adapter->tx_ring[i]->desc)
|
|
ixgbe_free_tx_resources(adapter->tx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_free_rx_resources - Free Rx Resources
|
|
* @rx_ring: ring to clean the resources from
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
|
|
{
|
|
ixgbe_clean_rx_ring(rx_ring);
|
|
|
|
vfree(rx_ring->rx_buffer_info);
|
|
rx_ring->rx_buffer_info = NULL;
|
|
|
|
/* if not set, then don't free */
|
|
if (!rx_ring->desc)
|
|
return;
|
|
|
|
dma_free_coherent(rx_ring->dev, rx_ring->size,
|
|
rx_ring->desc, rx_ring->dma);
|
|
|
|
rx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
ixgbe_free_fcoe_ddp_resources(adapter);
|
|
|
|
#endif
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
if (adapter->rx_ring[i]->desc)
|
|
ixgbe_free_rx_resources(adapter->rx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_change_mtu - Change the Maximum Transfer Unit
|
|
* @netdev: network interface device structure
|
|
* @new_mtu: new value for maximum frame size
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
/* MTU < 68 is an error and causes problems on some kernels */
|
|
if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* For 82599EB we cannot allow legacy VFs to enable their receive
|
|
* paths when MTU greater than 1500 is configured. So display a
|
|
* warning that legacy VFs will be disabled.
|
|
*/
|
|
if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
|
|
(adapter->hw.mac.type == ixgbe_mac_82599EB) &&
|
|
(max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
|
|
e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n");
|
|
|
|
e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
|
|
|
|
/* must set new MTU before calling down or up */
|
|
netdev->mtu = new_mtu;
|
|
|
|
if (netif_running(netdev))
|
|
ixgbe_reinit_locked(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_open - Called when a network interface is made active
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0 on success, negative value on failure
|
|
*
|
|
* The open entry point is called when a network interface is made
|
|
* active by the system (IFF_UP). At this point all resources needed
|
|
* for transmit and receive operations are allocated, the interrupt
|
|
* handler is registered with the OS, the watchdog timer is started,
|
|
* and the stack is notified that the interface is ready.
|
|
**/
|
|
static int ixgbe_open(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
int err, queues;
|
|
|
|
/* disallow open during test */
|
|
if (test_bit(__IXGBE_TESTING, &adapter->state))
|
|
return -EBUSY;
|
|
|
|
netif_carrier_off(netdev);
|
|
|
|
/* allocate transmit descriptors */
|
|
err = ixgbe_setup_all_tx_resources(adapter);
|
|
if (err)
|
|
goto err_setup_tx;
|
|
|
|
/* allocate receive descriptors */
|
|
err = ixgbe_setup_all_rx_resources(adapter);
|
|
if (err)
|
|
goto err_setup_rx;
|
|
|
|
ixgbe_configure(adapter);
|
|
|
|
err = ixgbe_request_irq(adapter);
|
|
if (err)
|
|
goto err_req_irq;
|
|
|
|
/* Notify the stack of the actual queue counts. */
|
|
if (adapter->num_rx_pools > 1)
|
|
queues = adapter->num_rx_queues_per_pool;
|
|
else
|
|
queues = adapter->num_tx_queues;
|
|
|
|
err = netif_set_real_num_tx_queues(netdev, queues);
|
|
if (err)
|
|
goto err_set_queues;
|
|
|
|
if (adapter->num_rx_pools > 1 &&
|
|
adapter->num_rx_queues > IXGBE_MAX_L2A_QUEUES)
|
|
queues = IXGBE_MAX_L2A_QUEUES;
|
|
else
|
|
queues = adapter->num_rx_queues;
|
|
err = netif_set_real_num_rx_queues(netdev, queues);
|
|
if (err)
|
|
goto err_set_queues;
|
|
|
|
ixgbe_ptp_init(adapter);
|
|
|
|
ixgbe_up_complete(adapter);
|
|
|
|
#if IS_ENABLED(CONFIG_IXGBE_VXLAN)
|
|
vxlan_get_rx_port(netdev);
|
|
|
|
#endif
|
|
return 0;
|
|
|
|
err_set_queues:
|
|
ixgbe_free_irq(adapter);
|
|
err_req_irq:
|
|
ixgbe_free_all_rx_resources(adapter);
|
|
err_setup_rx:
|
|
ixgbe_free_all_tx_resources(adapter);
|
|
err_setup_tx:
|
|
ixgbe_reset(adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void ixgbe_close_suspend(struct ixgbe_adapter *adapter)
|
|
{
|
|
ixgbe_ptp_suspend(adapter);
|
|
|
|
ixgbe_down(adapter);
|
|
ixgbe_free_irq(adapter);
|
|
|
|
ixgbe_free_all_tx_resources(adapter);
|
|
ixgbe_free_all_rx_resources(adapter);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_close - Disables a network interface
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0, this is not allowed to fail
|
|
*
|
|
* The close entry point is called when an interface is de-activated
|
|
* by the OS. The hardware is still under the drivers control, but
|
|
* needs to be disabled. A global MAC reset is issued to stop the
|
|
* hardware, and all transmit and receive resources are freed.
|
|
**/
|
|
static int ixgbe_close(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
|
|
ixgbe_ptp_stop(adapter);
|
|
|
|
ixgbe_close_suspend(adapter);
|
|
|
|
ixgbe_fdir_filter_exit(adapter);
|
|
|
|
ixgbe_release_hw_control(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ixgbe_resume(struct pci_dev *pdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
|
|
struct net_device *netdev = adapter->netdev;
|
|
u32 err;
|
|
|
|
adapter->hw.hw_addr = adapter->io_addr;
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_restore_state(pdev);
|
|
/*
|
|
* pci_restore_state clears dev->state_saved so call
|
|
* pci_save_state to restore it.
|
|
*/
|
|
pci_save_state(pdev);
|
|
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err) {
|
|
e_dev_err("Cannot enable PCI device from suspend\n");
|
|
return err;
|
|
}
|
|
smp_mb__before_atomic();
|
|
clear_bit(__IXGBE_DISABLED, &adapter->state);
|
|
pci_set_master(pdev);
|
|
|
|
pci_wake_from_d3(pdev, false);
|
|
|
|
ixgbe_reset(adapter);
|
|
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
|
|
|
|
rtnl_lock();
|
|
err = ixgbe_init_interrupt_scheme(adapter);
|
|
if (!err && netif_running(netdev))
|
|
err = ixgbe_open(netdev);
|
|
|
|
rtnl_unlock();
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
|
|
{
|
|
struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 ctrl, fctrl;
|
|
u32 wufc = adapter->wol;
|
|
#ifdef CONFIG_PM
|
|
int retval = 0;
|
|
#endif
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
rtnl_lock();
|
|
if (netif_running(netdev))
|
|
ixgbe_close_suspend(adapter);
|
|
rtnl_unlock();
|
|
|
|
ixgbe_clear_interrupt_scheme(adapter);
|
|
|
|
#ifdef CONFIG_PM
|
|
retval = pci_save_state(pdev);
|
|
if (retval)
|
|
return retval;
|
|
|
|
#endif
|
|
if (hw->mac.ops.stop_link_on_d3)
|
|
hw->mac.ops.stop_link_on_d3(hw);
|
|
|
|
if (wufc) {
|
|
ixgbe_set_rx_mode(netdev);
|
|
|
|
/* enable the optics for 82599 SFP+ fiber as we can WoL */
|
|
if (hw->mac.ops.enable_tx_laser)
|
|
hw->mac.ops.enable_tx_laser(hw);
|
|
|
|
/* turn on all-multi mode if wake on multicast is enabled */
|
|
if (wufc & IXGBE_WUFC_MC) {
|
|
fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
|
|
fctrl |= IXGBE_FCTRL_MPE;
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
|
|
}
|
|
|
|
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
|
|
ctrl |= IXGBE_CTRL_GIO_DIS;
|
|
IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
|
|
} else {
|
|
IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
|
|
IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
|
|
}
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
pci_wake_from_d3(pdev, false);
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
pci_wake_from_d3(pdev, !!wufc);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
*enable_wake = !!wufc;
|
|
|
|
ixgbe_release_hw_control(adapter);
|
|
|
|
if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
|
|
pci_disable_device(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
int retval;
|
|
bool wake;
|
|
|
|
retval = __ixgbe_shutdown(pdev, &wake);
|
|
if (retval)
|
|
return retval;
|
|
|
|
if (wake) {
|
|
pci_prepare_to_sleep(pdev);
|
|
} else {
|
|
pci_wake_from_d3(pdev, false);
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static void ixgbe_shutdown(struct pci_dev *pdev)
|
|
{
|
|
bool wake;
|
|
|
|
__ixgbe_shutdown(pdev, &wake);
|
|
|
|
if (system_state == SYSTEM_POWER_OFF) {
|
|
pci_wake_from_d3(pdev, wake);
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_update_stats - Update the board statistics counters.
|
|
* @adapter: board private structure
|
|
**/
|
|
void ixgbe_update_stats(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct ixgbe_hw_stats *hwstats = &adapter->stats;
|
|
u64 total_mpc = 0;
|
|
u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
|
|
u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
|
|
u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
|
|
u64 bytes = 0, packets = 0, hw_csum_rx_error = 0;
|
|
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state) ||
|
|
test_bit(__IXGBE_RESETTING, &adapter->state))
|
|
return;
|
|
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
|
|
u64 rsc_count = 0;
|
|
u64 rsc_flush = 0;
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
|
|
rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
|
|
}
|
|
adapter->rsc_total_count = rsc_count;
|
|
adapter->rsc_total_flush = rsc_flush;
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
|
|
non_eop_descs += rx_ring->rx_stats.non_eop_descs;
|
|
alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
|
|
alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
|
|
hw_csum_rx_error += rx_ring->rx_stats.csum_err;
|
|
bytes += rx_ring->stats.bytes;
|
|
packets += rx_ring->stats.packets;
|
|
}
|
|
adapter->non_eop_descs = non_eop_descs;
|
|
adapter->alloc_rx_page_failed = alloc_rx_page_failed;
|
|
adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
|
|
adapter->hw_csum_rx_error = hw_csum_rx_error;
|
|
netdev->stats.rx_bytes = bytes;
|
|
netdev->stats.rx_packets = packets;
|
|
|
|
bytes = 0;
|
|
packets = 0;
|
|
/* gather some stats to the adapter struct that are per queue */
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
|
|
restart_queue += tx_ring->tx_stats.restart_queue;
|
|
tx_busy += tx_ring->tx_stats.tx_busy;
|
|
bytes += tx_ring->stats.bytes;
|
|
packets += tx_ring->stats.packets;
|
|
}
|
|
adapter->restart_queue = restart_queue;
|
|
adapter->tx_busy = tx_busy;
|
|
netdev->stats.tx_bytes = bytes;
|
|
netdev->stats.tx_packets = packets;
|
|
|
|
hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
|
|
|
|
/* 8 register reads */
|
|
for (i = 0; i < 8; i++) {
|
|
/* for packet buffers not used, the register should read 0 */
|
|
mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
|
|
missed_rx += mpc;
|
|
hwstats->mpc[i] += mpc;
|
|
total_mpc += hwstats->mpc[i];
|
|
hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
|
|
hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
|
|
hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
|
|
hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
|
|
hwstats->pxonrxc[i] +=
|
|
IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
|
|
break;
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
hwstats->pxonrxc[i] +=
|
|
IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*16 register reads */
|
|
for (i = 0; i < 16; i++) {
|
|
hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
|
|
hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
|
|
if ((hw->mac.type == ixgbe_mac_82599EB) ||
|
|
(hw->mac.type == ixgbe_mac_X540) ||
|
|
(hw->mac.type == ixgbe_mac_X550) ||
|
|
(hw->mac.type == ixgbe_mac_X550EM_x)) {
|
|
hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
|
|
IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */
|
|
hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
|
|
IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */
|
|
}
|
|
}
|
|
|
|
hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
|
|
/* work around hardware counting issue */
|
|
hwstats->gprc -= missed_rx;
|
|
|
|
ixgbe_update_xoff_received(adapter);
|
|
|
|
/* 82598 hardware only has a 32 bit counter in the high register */
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
|
|
hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
|
|
hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
|
|
hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
|
|
break;
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
/* OS2BMC stats are X540 and later */
|
|
hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC);
|
|
hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC);
|
|
hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
|
|
hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
|
|
case ixgbe_mac_82599EB:
|
|
for (i = 0; i < 16; i++)
|
|
adapter->hw_rx_no_dma_resources +=
|
|
IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
|
|
hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
|
|
IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
|
|
hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
|
|
IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */
|
|
hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
|
|
IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
|
|
hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
|
|
hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
|
|
hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
|
|
#ifdef IXGBE_FCOE
|
|
hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
|
|
hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
|
|
hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
|
|
hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
|
|
hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
|
|
hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
|
|
/* Add up per cpu counters for total ddp aloc fail */
|
|
if (adapter->fcoe.ddp_pool) {
|
|
struct ixgbe_fcoe *fcoe = &adapter->fcoe;
|
|
struct ixgbe_fcoe_ddp_pool *ddp_pool;
|
|
unsigned int cpu;
|
|
u64 noddp = 0, noddp_ext_buff = 0;
|
|
for_each_possible_cpu(cpu) {
|
|
ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu);
|
|
noddp += ddp_pool->noddp;
|
|
noddp_ext_buff += ddp_pool->noddp_ext_buff;
|
|
}
|
|
hwstats->fcoe_noddp = noddp;
|
|
hwstats->fcoe_noddp_ext_buff = noddp_ext_buff;
|
|
}
|
|
#endif /* IXGBE_FCOE */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
|
|
hwstats->bprc += bprc;
|
|
hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
hwstats->mprc -= bprc;
|
|
hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
|
|
hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
|
|
hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
|
|
hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
|
|
hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
|
|
hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
|
|
hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
|
|
hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
|
|
lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
|
|
hwstats->lxontxc += lxon;
|
|
lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
|
|
hwstats->lxofftxc += lxoff;
|
|
hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
|
|
hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
|
|
/*
|
|
* 82598 errata - tx of flow control packets is included in tx counters
|
|
*/
|
|
xon_off_tot = lxon + lxoff;
|
|
hwstats->gptc -= xon_off_tot;
|
|
hwstats->mptc -= xon_off_tot;
|
|
hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
|
|
hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
|
|
hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
|
|
hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
|
|
hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
|
|
hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
|
|
hwstats->ptc64 -= xon_off_tot;
|
|
hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
|
|
hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
|
|
hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
|
|
hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
|
|
hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
|
|
hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
|
|
|
|
/* Fill out the OS statistics structure */
|
|
netdev->stats.multicast = hwstats->mprc;
|
|
|
|
/* Rx Errors */
|
|
netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
|
|
netdev->stats.rx_dropped = 0;
|
|
netdev->stats.rx_length_errors = hwstats->rlec;
|
|
netdev->stats.rx_crc_errors = hwstats->crcerrs;
|
|
netdev->stats.rx_missed_errors = total_mpc;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
|
|
* @adapter: pointer to the device adapter structure
|
|
**/
|
|
static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
int i;
|
|
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
|
|
return;
|
|
|
|
adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
|
|
|
|
/* if interface is down do nothing */
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state))
|
|
return;
|
|
|
|
/* do nothing if we are not using signature filters */
|
|
if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
|
|
return;
|
|
|
|
adapter->fdir_overflow++;
|
|
|
|
if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
set_bit(__IXGBE_TX_FDIR_INIT_DONE,
|
|
&(adapter->tx_ring[i]->state));
|
|
/* re-enable flow director interrupts */
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
|
|
} else {
|
|
e_err(probe, "failed to finish FDIR re-initialization, "
|
|
"ignored adding FDIR ATR filters\n");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
|
|
* @adapter: pointer to the device adapter structure
|
|
*
|
|
* This function serves two purposes. First it strobes the interrupt lines
|
|
* in order to make certain interrupts are occurring. Secondly it sets the
|
|
* bits needed to check for TX hangs. As a result we should immediately
|
|
* determine if a hang has occurred.
|
|
*/
|
|
static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u64 eics = 0;
|
|
int i;
|
|
|
|
/* If we're down, removing or resetting, just bail */
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state) ||
|
|
test_bit(__IXGBE_REMOVING, &adapter->state) ||
|
|
test_bit(__IXGBE_RESETTING, &adapter->state))
|
|
return;
|
|
|
|
/* Force detection of hung controller */
|
|
if (netif_carrier_ok(adapter->netdev)) {
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
set_check_for_tx_hang(adapter->tx_ring[i]);
|
|
}
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
|
|
/*
|
|
* for legacy and MSI interrupts don't set any bits
|
|
* that are enabled for EIAM, because this operation
|
|
* would set *both* EIMS and EICS for any bit in EIAM
|
|
*/
|
|
IXGBE_WRITE_REG(hw, IXGBE_EICS,
|
|
(IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
|
|
} else {
|
|
/* get one bit for every active tx/rx interrupt vector */
|
|
for (i = 0; i < adapter->num_q_vectors; i++) {
|
|
struct ixgbe_q_vector *qv = adapter->q_vector[i];
|
|
if (qv->rx.ring || qv->tx.ring)
|
|
eics |= ((u64)1 << i);
|
|
}
|
|
}
|
|
|
|
/* Cause software interrupt to ensure rings are cleaned */
|
|
ixgbe_irq_rearm_queues(adapter, eics);
|
|
|
|
}
|
|
|
|
/**
|
|
* ixgbe_watchdog_update_link - update the link status
|
|
* @adapter: pointer to the device adapter structure
|
|
* @link_speed: pointer to a u32 to store the link_speed
|
|
**/
|
|
static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 link_speed = adapter->link_speed;
|
|
bool link_up = adapter->link_up;
|
|
bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE))
|
|
return;
|
|
|
|
if (hw->mac.ops.check_link) {
|
|
hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
|
|
} else {
|
|
/* always assume link is up, if no check link function */
|
|
link_speed = IXGBE_LINK_SPEED_10GB_FULL;
|
|
link_up = true;
|
|
}
|
|
|
|
if (adapter->ixgbe_ieee_pfc)
|
|
pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
|
|
|
|
if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) {
|
|
hw->mac.ops.fc_enable(hw);
|
|
ixgbe_set_rx_drop_en(adapter);
|
|
}
|
|
|
|
if (link_up ||
|
|
time_after(jiffies, (adapter->link_check_timeout +
|
|
IXGBE_TRY_LINK_TIMEOUT))) {
|
|
adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
|
|
IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
}
|
|
|
|
adapter->link_up = link_up;
|
|
adapter->link_speed = link_speed;
|
|
}
|
|
|
|
static void ixgbe_update_default_up(struct ixgbe_adapter *adapter)
|
|
{
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct dcb_app app = {
|
|
.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE,
|
|
.protocol = 0,
|
|
};
|
|
u8 up = 0;
|
|
|
|
if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)
|
|
up = dcb_ieee_getapp_mask(netdev, &app);
|
|
|
|
adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* ixgbe_watchdog_link_is_up - update netif_carrier status and
|
|
* print link up message
|
|
* @adapter: pointer to the device adapter structure
|
|
**/
|
|
static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct net_device *upper;
|
|
struct list_head *iter;
|
|
u32 link_speed = adapter->link_speed;
|
|
bool flow_rx, flow_tx;
|
|
|
|
/* only continue if link was previously down */
|
|
if (netif_carrier_ok(netdev))
|
|
return;
|
|
|
|
adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
|
|
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB: {
|
|
u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
|
|
u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
|
|
flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
|
|
flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
|
|
}
|
|
break;
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
case ixgbe_mac_82599EB: {
|
|
u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
|
|
u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
|
|
flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
|
|
flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
|
|
}
|
|
break;
|
|
default:
|
|
flow_tx = false;
|
|
flow_rx = false;
|
|
break;
|
|
}
|
|
|
|
adapter->last_rx_ptp_check = jiffies;
|
|
|
|
if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
|
|
ixgbe_ptp_start_cyclecounter(adapter);
|
|
|
|
e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
|
|
(link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
|
|
"10 Gbps" :
|
|
(link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
|
|
"1 Gbps" :
|
|
(link_speed == IXGBE_LINK_SPEED_100_FULL ?
|
|
"100 Mbps" :
|
|
"unknown speed"))),
|
|
((flow_rx && flow_tx) ? "RX/TX" :
|
|
(flow_rx ? "RX" :
|
|
(flow_tx ? "TX" : "None"))));
|
|
|
|
netif_carrier_on(netdev);
|
|
ixgbe_check_vf_rate_limit(adapter);
|
|
|
|
/* enable transmits */
|
|
netif_tx_wake_all_queues(adapter->netdev);
|
|
|
|
/* enable any upper devices */
|
|
rtnl_lock();
|
|
netdev_for_each_all_upper_dev_rcu(adapter->netdev, upper, iter) {
|
|
if (netif_is_macvlan(upper)) {
|
|
struct macvlan_dev *vlan = netdev_priv(upper);
|
|
|
|
if (vlan->fwd_priv)
|
|
netif_tx_wake_all_queues(upper);
|
|
}
|
|
}
|
|
rtnl_unlock();
|
|
|
|
/* update the default user priority for VFs */
|
|
ixgbe_update_default_up(adapter);
|
|
|
|
/* ping all the active vfs to let them know link has changed */
|
|
ixgbe_ping_all_vfs(adapter);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_watchdog_link_is_down - update netif_carrier status and
|
|
* print link down message
|
|
* @adapter: pointer to the adapter structure
|
|
**/
|
|
static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
adapter->link_up = false;
|
|
adapter->link_speed = 0;
|
|
|
|
/* only continue if link was up previously */
|
|
if (!netif_carrier_ok(netdev))
|
|
return;
|
|
|
|
/* poll for SFP+ cable when link is down */
|
|
if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB)
|
|
adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
|
|
|
|
if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
|
|
ixgbe_ptp_start_cyclecounter(adapter);
|
|
|
|
e_info(drv, "NIC Link is Down\n");
|
|
netif_carrier_off(netdev);
|
|
|
|
/* ping all the active vfs to let them know link has changed */
|
|
ixgbe_ping_all_vfs(adapter);
|
|
}
|
|
|
|
static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
|
|
|
|
if (tx_ring->next_to_use != tx_ring->next_to_clean)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
|
|
u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
|
|
|
|
int i, j;
|
|
|
|
if (!adapter->num_vfs)
|
|
return false;
|
|
|
|
/* resetting the PF is only needed for MAC before X550 */
|
|
if (hw->mac.type >= ixgbe_mac_X550)
|
|
return false;
|
|
|
|
for (i = 0; i < adapter->num_vfs; i++) {
|
|
for (j = 0; j < q_per_pool; j++) {
|
|
u32 h, t;
|
|
|
|
h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j));
|
|
t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j));
|
|
|
|
if (h != t)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_watchdog_flush_tx - flush queues on link down
|
|
* @adapter: pointer to the device adapter structure
|
|
**/
|
|
static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter)
|
|
{
|
|
if (!netif_carrier_ok(adapter->netdev)) {
|
|
if (ixgbe_ring_tx_pending(adapter) ||
|
|
ixgbe_vf_tx_pending(adapter)) {
|
|
/* We've lost link, so the controller stops DMA,
|
|
* but we've got queued Tx work that's never going
|
|
* to get done, so reset controller to flush Tx.
|
|
* (Do the reset outside of interrupt context).
|
|
*/
|
|
e_warn(drv, "initiating reset to clear Tx work after link loss\n");
|
|
adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
static inline void ixgbe_issue_vf_flr(struct ixgbe_adapter *adapter,
|
|
struct pci_dev *vfdev)
|
|
{
|
|
if (!pci_wait_for_pending_transaction(vfdev))
|
|
e_dev_warn("Issuing VFLR with pending transactions\n");
|
|
|
|
e_dev_err("Issuing VFLR for VF %s\n", pci_name(vfdev));
|
|
pcie_capability_set_word(vfdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
|
|
|
|
msleep(100);
|
|
}
|
|
|
|
static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct pci_dev *vfdev;
|
|
u32 gpc;
|
|
int pos;
|
|
unsigned short vf_id;
|
|
|
|
if (!(netif_carrier_ok(adapter->netdev)))
|
|
return;
|
|
|
|
gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC);
|
|
if (gpc) /* If incrementing then no need for the check below */
|
|
return;
|
|
/* Check to see if a bad DMA write target from an errant or
|
|
* malicious VF has caused a PCIe error. If so then we can
|
|
* issue a VFLR to the offending VF(s) and then resume without
|
|
* requesting a full slot reset.
|
|
*/
|
|
|
|
if (!pdev)
|
|
return;
|
|
|
|
pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
|
|
if (!pos)
|
|
return;
|
|
|
|
/* get the device ID for the VF */
|
|
pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
|
|
|
|
/* check status reg for all VFs owned by this PF */
|
|
vfdev = pci_get_device(pdev->vendor, vf_id, NULL);
|
|
while (vfdev) {
|
|
if (vfdev->is_virtfn && (vfdev->physfn == pdev)) {
|
|
u16 status_reg;
|
|
|
|
pci_read_config_word(vfdev, PCI_STATUS, &status_reg);
|
|
if (status_reg & PCI_STATUS_REC_MASTER_ABORT)
|
|
/* issue VFLR */
|
|
ixgbe_issue_vf_flr(adapter, vfdev);
|
|
}
|
|
|
|
vfdev = pci_get_device(pdev->vendor, vf_id, vfdev);
|
|
}
|
|
}
|
|
|
|
static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
|
|
{
|
|
u32 ssvpc;
|
|
|
|
/* Do not perform spoof check for 82598 or if not in IOV mode */
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
|
|
adapter->num_vfs == 0)
|
|
return;
|
|
|
|
ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
|
|
|
|
/*
|
|
* ssvpc register is cleared on read, if zero then no
|
|
* spoofed packets in the last interval.
|
|
*/
|
|
if (!ssvpc)
|
|
return;
|
|
|
|
e_warn(drv, "%u Spoofed packets detected\n", ssvpc);
|
|
}
|
|
#else
|
|
static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter)
|
|
{
|
|
}
|
|
|
|
static void
|
|
ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter)
|
|
{
|
|
}
|
|
#endif /* CONFIG_PCI_IOV */
|
|
|
|
|
|
/**
|
|
* ixgbe_watchdog_subtask - check and bring link up
|
|
* @adapter: pointer to the device adapter structure
|
|
**/
|
|
static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
/* if interface is down, removing or resetting, do nothing */
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state) ||
|
|
test_bit(__IXGBE_REMOVING, &adapter->state) ||
|
|
test_bit(__IXGBE_RESETTING, &adapter->state))
|
|
return;
|
|
|
|
ixgbe_watchdog_update_link(adapter);
|
|
|
|
if (adapter->link_up)
|
|
ixgbe_watchdog_link_is_up(adapter);
|
|
else
|
|
ixgbe_watchdog_link_is_down(adapter);
|
|
|
|
ixgbe_check_for_bad_vf(adapter);
|
|
ixgbe_spoof_check(adapter);
|
|
ixgbe_update_stats(adapter);
|
|
|
|
ixgbe_watchdog_flush_tx(adapter);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_sfp_detection_subtask - poll for SFP+ cable
|
|
* @adapter: the ixgbe adapter structure
|
|
**/
|
|
static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
s32 err;
|
|
|
|
/* not searching for SFP so there is nothing to do here */
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) &&
|
|
!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
|
|
return;
|
|
|
|
/* someone else is in init, wait until next service event */
|
|
if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
|
|
return;
|
|
|
|
err = hw->phy.ops.identify_sfp(hw);
|
|
if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
|
|
goto sfp_out;
|
|
|
|
if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
|
|
/* If no cable is present, then we need to reset
|
|
* the next time we find a good cable. */
|
|
adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
|
|
}
|
|
|
|
/* exit on error */
|
|
if (err)
|
|
goto sfp_out;
|
|
|
|
/* exit if reset not needed */
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
|
|
goto sfp_out;
|
|
|
|
adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET;
|
|
|
|
/*
|
|
* A module may be identified correctly, but the EEPROM may not have
|
|
* support for that module. setup_sfp() will fail in that case, so
|
|
* we should not allow that module to load.
|
|
*/
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
err = hw->phy.ops.reset(hw);
|
|
else
|
|
err = hw->mac.ops.setup_sfp(hw);
|
|
|
|
if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
|
|
goto sfp_out;
|
|
|
|
adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
|
|
e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
|
|
|
|
sfp_out:
|
|
clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
|
|
|
|
if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) &&
|
|
(adapter->netdev->reg_state == NETREG_REGISTERED)) {
|
|
e_dev_err("failed to initialize because an unsupported "
|
|
"SFP+ module type was detected.\n");
|
|
e_dev_err("Reload the driver after installing a "
|
|
"supported module.\n");
|
|
unregister_netdev(adapter->netdev);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_sfp_link_config_subtask - set up link SFP after module install
|
|
* @adapter: the ixgbe adapter structure
|
|
**/
|
|
static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 speed;
|
|
bool autoneg = false;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG))
|
|
return;
|
|
|
|
/* someone else is in init, wait until next service event */
|
|
if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
|
|
return;
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
|
|
|
|
speed = hw->phy.autoneg_advertised;
|
|
if ((!speed) && (hw->mac.ops.get_link_capabilities)) {
|
|
hw->mac.ops.get_link_capabilities(hw, &speed, &autoneg);
|
|
|
|
/* setup the highest link when no autoneg */
|
|
if (!autoneg) {
|
|
if (speed & IXGBE_LINK_SPEED_10GB_FULL)
|
|
speed = IXGBE_LINK_SPEED_10GB_FULL;
|
|
}
|
|
}
|
|
|
|
if (hw->mac.ops.setup_link)
|
|
hw->mac.ops.setup_link(hw, speed, true);
|
|
|
|
adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
|
|
adapter->link_check_timeout = jiffies;
|
|
clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_service_timer - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
static void ixgbe_service_timer(unsigned long data)
|
|
{
|
|
struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
|
|
unsigned long next_event_offset;
|
|
|
|
/* poll faster when waiting for link */
|
|
if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
|
|
next_event_offset = HZ / 10;
|
|
else
|
|
next_event_offset = HZ * 2;
|
|
|
|
/* Reset the timer */
|
|
mod_timer(&adapter->service_timer, next_event_offset + jiffies);
|
|
|
|
ixgbe_service_event_schedule(adapter);
|
|
}
|
|
|
|
static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
|
|
{
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_RESET_REQUESTED))
|
|
return;
|
|
|
|
adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED;
|
|
|
|
/* If we're already down, removing or resetting, just bail */
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state) ||
|
|
test_bit(__IXGBE_REMOVING, &adapter->state) ||
|
|
test_bit(__IXGBE_RESETTING, &adapter->state))
|
|
return;
|
|
|
|
ixgbe_dump(adapter);
|
|
netdev_err(adapter->netdev, "Reset adapter\n");
|
|
adapter->tx_timeout_count++;
|
|
|
|
rtnl_lock();
|
|
ixgbe_reinit_locked(adapter);
|
|
rtnl_unlock();
|
|
}
|
|
|
|
/**
|
|
* ixgbe_service_task - manages and runs subtasks
|
|
* @work: pointer to work_struct containing our data
|
|
**/
|
|
static void ixgbe_service_task(struct work_struct *work)
|
|
{
|
|
struct ixgbe_adapter *adapter = container_of(work,
|
|
struct ixgbe_adapter,
|
|
service_task);
|
|
if (ixgbe_removed(adapter->hw.hw_addr)) {
|
|
if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
|
|
rtnl_lock();
|
|
ixgbe_down(adapter);
|
|
rtnl_unlock();
|
|
}
|
|
ixgbe_service_event_complete(adapter);
|
|
return;
|
|
}
|
|
ixgbe_reset_subtask(adapter);
|
|
ixgbe_sfp_detection_subtask(adapter);
|
|
ixgbe_sfp_link_config_subtask(adapter);
|
|
ixgbe_check_overtemp_subtask(adapter);
|
|
ixgbe_watchdog_subtask(adapter);
|
|
ixgbe_fdir_reinit_subtask(adapter);
|
|
ixgbe_check_hang_subtask(adapter);
|
|
|
|
if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) {
|
|
ixgbe_ptp_overflow_check(adapter);
|
|
ixgbe_ptp_rx_hang(adapter);
|
|
}
|
|
|
|
ixgbe_service_event_complete(adapter);
|
|
}
|
|
|
|
static int ixgbe_tso(struct ixgbe_ring *tx_ring,
|
|
struct ixgbe_tx_buffer *first,
|
|
u8 *hdr_len)
|
|
{
|
|
struct sk_buff *skb = first->skb;
|
|
u32 vlan_macip_lens, type_tucmd;
|
|
u32 mss_l4len_idx, l4len;
|
|
int err;
|
|
|
|
if (skb->ip_summed != CHECKSUM_PARTIAL)
|
|
return 0;
|
|
|
|
if (!skb_is_gso(skb))
|
|
return 0;
|
|
|
|
err = skb_cow_head(skb, 0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
|
|
type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
|
|
|
|
if (first->protocol == htons(ETH_P_IP)) {
|
|
struct iphdr *iph = ip_hdr(skb);
|
|
iph->tot_len = 0;
|
|
iph->check = 0;
|
|
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
|
|
iph->daddr, 0,
|
|
IPPROTO_TCP,
|
|
0);
|
|
type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
|
|
first->tx_flags |= IXGBE_TX_FLAGS_TSO |
|
|
IXGBE_TX_FLAGS_CSUM |
|
|
IXGBE_TX_FLAGS_IPV4;
|
|
} else if (skb_is_gso_v6(skb)) {
|
|
ipv6_hdr(skb)->payload_len = 0;
|
|
tcp_hdr(skb)->check =
|
|
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
|
|
&ipv6_hdr(skb)->daddr,
|
|
0, IPPROTO_TCP, 0);
|
|
first->tx_flags |= IXGBE_TX_FLAGS_TSO |
|
|
IXGBE_TX_FLAGS_CSUM;
|
|
}
|
|
|
|
/* compute header lengths */
|
|
l4len = tcp_hdrlen(skb);
|
|
*hdr_len = skb_transport_offset(skb) + l4len;
|
|
|
|
/* update gso size and bytecount with header size */
|
|
first->gso_segs = skb_shinfo(skb)->gso_segs;
|
|
first->bytecount += (first->gso_segs - 1) * *hdr_len;
|
|
|
|
/* mss_l4len_id: use 0 as index for TSO */
|
|
mss_l4len_idx = l4len << IXGBE_ADVTXD_L4LEN_SHIFT;
|
|
mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT;
|
|
|
|
/* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
|
|
vlan_macip_lens = skb_network_header_len(skb);
|
|
vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
|
|
vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
|
|
|
|
ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd,
|
|
mss_l4len_idx);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring,
|
|
struct ixgbe_tx_buffer *first)
|
|
{
|
|
struct sk_buff *skb = first->skb;
|
|
u32 vlan_macip_lens = 0;
|
|
u32 mss_l4len_idx = 0;
|
|
u32 type_tucmd = 0;
|
|
|
|
if (skb->ip_summed != CHECKSUM_PARTIAL) {
|
|
if (!(first->tx_flags & IXGBE_TX_FLAGS_HW_VLAN) &&
|
|
!(first->tx_flags & IXGBE_TX_FLAGS_CC))
|
|
return;
|
|
} else {
|
|
u8 l4_hdr = 0;
|
|
switch (first->protocol) {
|
|
case htons(ETH_P_IP):
|
|
vlan_macip_lens |= skb_network_header_len(skb);
|
|
type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
|
|
l4_hdr = ip_hdr(skb)->protocol;
|
|
break;
|
|
case htons(ETH_P_IPV6):
|
|
vlan_macip_lens |= skb_network_header_len(skb);
|
|
l4_hdr = ipv6_hdr(skb)->nexthdr;
|
|
break;
|
|
default:
|
|
if (unlikely(net_ratelimit())) {
|
|
dev_warn(tx_ring->dev,
|
|
"partial checksum but proto=%x!\n",
|
|
first->protocol);
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch (l4_hdr) {
|
|
case IPPROTO_TCP:
|
|
type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
|
|
mss_l4len_idx = tcp_hdrlen(skb) <<
|
|
IXGBE_ADVTXD_L4LEN_SHIFT;
|
|
break;
|
|
case IPPROTO_SCTP:
|
|
type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
|
|
mss_l4len_idx = sizeof(struct sctphdr) <<
|
|
IXGBE_ADVTXD_L4LEN_SHIFT;
|
|
break;
|
|
case IPPROTO_UDP:
|
|
mss_l4len_idx = sizeof(struct udphdr) <<
|
|
IXGBE_ADVTXD_L4LEN_SHIFT;
|
|
break;
|
|
default:
|
|
if (unlikely(net_ratelimit())) {
|
|
dev_warn(tx_ring->dev,
|
|
"partial checksum but l4 proto=%x!\n",
|
|
l4_hdr);
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* update TX checksum flag */
|
|
first->tx_flags |= IXGBE_TX_FLAGS_CSUM;
|
|
}
|
|
|
|
/* vlan_macip_lens: MACLEN, VLAN tag */
|
|
vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
|
|
vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
|
|
|
|
ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0,
|
|
type_tucmd, mss_l4len_idx);
|
|
}
|
|
|
|
#define IXGBE_SET_FLAG(_input, _flag, _result) \
|
|
((_flag <= _result) ? \
|
|
((u32)(_input & _flag) * (_result / _flag)) : \
|
|
((u32)(_input & _flag) / (_flag / _result)))
|
|
|
|
static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
|
|
{
|
|
/* set type for advanced descriptor with frame checksum insertion */
|
|
u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA |
|
|
IXGBE_ADVTXD_DCMD_DEXT |
|
|
IXGBE_ADVTXD_DCMD_IFCS;
|
|
|
|
/* set HW vlan bit if vlan is present */
|
|
cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN,
|
|
IXGBE_ADVTXD_DCMD_VLE);
|
|
|
|
/* set segmentation enable bits for TSO/FSO */
|
|
cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO,
|
|
IXGBE_ADVTXD_DCMD_TSE);
|
|
|
|
/* set timestamp bit if present */
|
|
cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP,
|
|
IXGBE_ADVTXD_MAC_TSTAMP);
|
|
|
|
/* insert frame checksum */
|
|
cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS);
|
|
|
|
return cmd_type;
|
|
}
|
|
|
|
static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc,
|
|
u32 tx_flags, unsigned int paylen)
|
|
{
|
|
u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT;
|
|
|
|
/* enable L4 checksum for TSO and TX checksum offload */
|
|
olinfo_status |= IXGBE_SET_FLAG(tx_flags,
|
|
IXGBE_TX_FLAGS_CSUM,
|
|
IXGBE_ADVTXD_POPTS_TXSM);
|
|
|
|
/* enble IPv4 checksum for TSO */
|
|
olinfo_status |= IXGBE_SET_FLAG(tx_flags,
|
|
IXGBE_TX_FLAGS_IPV4,
|
|
IXGBE_ADVTXD_POPTS_IXSM);
|
|
|
|
/*
|
|
* Check Context must be set if Tx switch is enabled, which it
|
|
* always is for case where virtual functions are running
|
|
*/
|
|
olinfo_status |= IXGBE_SET_FLAG(tx_flags,
|
|
IXGBE_TX_FLAGS_CC,
|
|
IXGBE_ADVTXD_CC);
|
|
|
|
tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
|
|
}
|
|
|
|
static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
|
|
{
|
|
netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
|
|
|
|
/* Herbert's original patch had:
|
|
* smp_mb__after_netif_stop_queue();
|
|
* but since that doesn't exist yet, just open code it.
|
|
*/
|
|
smp_mb();
|
|
|
|
/* We need to check again in a case another CPU has just
|
|
* made room available.
|
|
*/
|
|
if (likely(ixgbe_desc_unused(tx_ring) < size))
|
|
return -EBUSY;
|
|
|
|
/* A reprieve! - use start_queue because it doesn't call schedule */
|
|
netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
|
|
++tx_ring->tx_stats.restart_queue;
|
|
return 0;
|
|
}
|
|
|
|
static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
|
|
{
|
|
if (likely(ixgbe_desc_unused(tx_ring) >= size))
|
|
return 0;
|
|
|
|
return __ixgbe_maybe_stop_tx(tx_ring, size);
|
|
}
|
|
|
|
#define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
|
|
IXGBE_TXD_CMD_RS)
|
|
|
|
static void ixgbe_tx_map(struct ixgbe_ring *tx_ring,
|
|
struct ixgbe_tx_buffer *first,
|
|
const u8 hdr_len)
|
|
{
|
|
struct sk_buff *skb = first->skb;
|
|
struct ixgbe_tx_buffer *tx_buffer;
|
|
union ixgbe_adv_tx_desc *tx_desc;
|
|
struct skb_frag_struct *frag;
|
|
dma_addr_t dma;
|
|
unsigned int data_len, size;
|
|
u32 tx_flags = first->tx_flags;
|
|
u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags);
|
|
u16 i = tx_ring->next_to_use;
|
|
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, i);
|
|
|
|
ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len);
|
|
|
|
size = skb_headlen(skb);
|
|
data_len = skb->data_len;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
|
|
if (data_len < sizeof(struct fcoe_crc_eof)) {
|
|
size -= sizeof(struct fcoe_crc_eof) - data_len;
|
|
data_len = 0;
|
|
} else {
|
|
data_len -= sizeof(struct fcoe_crc_eof);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
|
|
|
|
tx_buffer = first;
|
|
|
|
for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
|
|
if (dma_mapping_error(tx_ring->dev, dma))
|
|
goto dma_error;
|
|
|
|
/* record length, and DMA address */
|
|
dma_unmap_len_set(tx_buffer, len, size);
|
|
dma_unmap_addr_set(tx_buffer, dma, dma);
|
|
|
|
tx_desc->read.buffer_addr = cpu_to_le64(dma);
|
|
|
|
while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) {
|
|
tx_desc->read.cmd_type_len =
|
|
cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD);
|
|
|
|
i++;
|
|
tx_desc++;
|
|
if (i == tx_ring->count) {
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, 0);
|
|
i = 0;
|
|
}
|
|
tx_desc->read.olinfo_status = 0;
|
|
|
|
dma += IXGBE_MAX_DATA_PER_TXD;
|
|
size -= IXGBE_MAX_DATA_PER_TXD;
|
|
|
|
tx_desc->read.buffer_addr = cpu_to_le64(dma);
|
|
}
|
|
|
|
if (likely(!data_len))
|
|
break;
|
|
|
|
tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
|
|
|
|
i++;
|
|
tx_desc++;
|
|
if (i == tx_ring->count) {
|
|
tx_desc = IXGBE_TX_DESC(tx_ring, 0);
|
|
i = 0;
|
|
}
|
|
tx_desc->read.olinfo_status = 0;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
size = min_t(unsigned int, data_len, skb_frag_size(frag));
|
|
#else
|
|
size = skb_frag_size(frag);
|
|
#endif
|
|
data_len -= size;
|
|
|
|
dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size,
|
|
DMA_TO_DEVICE);
|
|
|
|
tx_buffer = &tx_ring->tx_buffer_info[i];
|
|
}
|
|
|
|
/* write last descriptor with RS and EOP bits */
|
|
cmd_type |= size | IXGBE_TXD_CMD;
|
|
tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
|
|
|
|
netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
|
|
|
|
/* set the timestamp */
|
|
first->time_stamp = jiffies;
|
|
|
|
/*
|
|
* Force memory writes to complete before letting h/w know there
|
|
* are new descriptors to fetch. (Only applicable for weak-ordered
|
|
* memory model archs, such as IA-64).
|
|
*
|
|
* We also need this memory barrier to make certain all of the
|
|
* status bits have been updated before next_to_watch is written.
|
|
*/
|
|
wmb();
|
|
|
|
/* set next_to_watch value indicating a packet is present */
|
|
first->next_to_watch = tx_desc;
|
|
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
|
|
tx_ring->next_to_use = i;
|
|
|
|
ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
|
|
|
|
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
|
|
writel(i, tx_ring->tail);
|
|
|
|
/* we need this if more than one processor can write to our tail
|
|
* at a time, it synchronizes IO on IA64/Altix systems
|
|
*/
|
|
mmiowb();
|
|
}
|
|
|
|
return;
|
|
dma_error:
|
|
dev_err(tx_ring->dev, "TX DMA map failed\n");
|
|
|
|
/* clear dma mappings for failed tx_buffer_info map */
|
|
for (;;) {
|
|
tx_buffer = &tx_ring->tx_buffer_info[i];
|
|
ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer);
|
|
if (tx_buffer == first)
|
|
break;
|
|
if (i == 0)
|
|
i = tx_ring->count;
|
|
i--;
|
|
}
|
|
|
|
tx_ring->next_to_use = i;
|
|
}
|
|
|
|
static void ixgbe_atr(struct ixgbe_ring *ring,
|
|
struct ixgbe_tx_buffer *first)
|
|
{
|
|
struct ixgbe_q_vector *q_vector = ring->q_vector;
|
|
union ixgbe_atr_hash_dword input = { .dword = 0 };
|
|
union ixgbe_atr_hash_dword common = { .dword = 0 };
|
|
union {
|
|
unsigned char *network;
|
|
struct iphdr *ipv4;
|
|
struct ipv6hdr *ipv6;
|
|
} hdr;
|
|
struct tcphdr *th;
|
|
__be16 vlan_id;
|
|
|
|
/* if ring doesn't have a interrupt vector, cannot perform ATR */
|
|
if (!q_vector)
|
|
return;
|
|
|
|
/* do nothing if sampling is disabled */
|
|
if (!ring->atr_sample_rate)
|
|
return;
|
|
|
|
ring->atr_count++;
|
|
|
|
/* snag network header to get L4 type and address */
|
|
hdr.network = skb_network_header(first->skb);
|
|
|
|
/* Currently only IPv4/IPv6 with TCP is supported */
|
|
if ((first->protocol != htons(ETH_P_IPV6) ||
|
|
hdr.ipv6->nexthdr != IPPROTO_TCP) &&
|
|
(first->protocol != htons(ETH_P_IP) ||
|
|
hdr.ipv4->protocol != IPPROTO_TCP))
|
|
return;
|
|
|
|
th = tcp_hdr(first->skb);
|
|
|
|
/* skip this packet since it is invalid or the socket is closing */
|
|
if (!th || th->fin)
|
|
return;
|
|
|
|
/* sample on all syn packets or once every atr sample count */
|
|
if (!th->syn && (ring->atr_count < ring->atr_sample_rate))
|
|
return;
|
|
|
|
/* reset sample count */
|
|
ring->atr_count = 0;
|
|
|
|
vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT);
|
|
|
|
/*
|
|
* src and dst are inverted, think how the receiver sees them
|
|
*
|
|
* The input is broken into two sections, a non-compressed section
|
|
* containing vm_pool, vlan_id, and flow_type. The rest of the data
|
|
* is XORed together and stored in the compressed dword.
|
|
*/
|
|
input.formatted.vlan_id = vlan_id;
|
|
|
|
/*
|
|
* since src port and flex bytes occupy the same word XOR them together
|
|
* and write the value to source port portion of compressed dword
|
|
*/
|
|
if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN))
|
|
common.port.src ^= th->dest ^ htons(ETH_P_8021Q);
|
|
else
|
|
common.port.src ^= th->dest ^ first->protocol;
|
|
common.port.dst ^= th->source;
|
|
|
|
if (first->protocol == htons(ETH_P_IP)) {
|
|
input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4;
|
|
common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr;
|
|
} else {
|
|
input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6;
|
|
common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^
|
|
hdr.ipv6->saddr.s6_addr32[1] ^
|
|
hdr.ipv6->saddr.s6_addr32[2] ^
|
|
hdr.ipv6->saddr.s6_addr32[3] ^
|
|
hdr.ipv6->daddr.s6_addr32[0] ^
|
|
hdr.ipv6->daddr.s6_addr32[1] ^
|
|
hdr.ipv6->daddr.s6_addr32[2] ^
|
|
hdr.ipv6->daddr.s6_addr32[3];
|
|
}
|
|
|
|
/* This assumes the Rx queue and Tx queue are bound to the same CPU */
|
|
ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw,
|
|
input, common, ring->queue_index);
|
|
}
|
|
|
|
static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb,
|
|
void *accel_priv, select_queue_fallback_t fallback)
|
|
{
|
|
struct ixgbe_fwd_adapter *fwd_adapter = accel_priv;
|
|
#ifdef IXGBE_FCOE
|
|
struct ixgbe_adapter *adapter;
|
|
struct ixgbe_ring_feature *f;
|
|
int txq;
|
|
#endif
|
|
|
|
if (fwd_adapter)
|
|
return skb->queue_mapping + fwd_adapter->tx_base_queue;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
|
|
/*
|
|
* only execute the code below if protocol is FCoE
|
|
* or FIP and we have FCoE enabled on the adapter
|
|
*/
|
|
switch (vlan_get_protocol(skb)) {
|
|
case htons(ETH_P_FCOE):
|
|
case htons(ETH_P_FIP):
|
|
adapter = netdev_priv(dev);
|
|
|
|
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
|
|
break;
|
|
default:
|
|
return fallback(dev, skb);
|
|
}
|
|
|
|
f = &adapter->ring_feature[RING_F_FCOE];
|
|
|
|
txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) :
|
|
smp_processor_id();
|
|
|
|
while (txq >= f->indices)
|
|
txq -= f->indices;
|
|
|
|
return txq + f->offset;
|
|
#else
|
|
return fallback(dev, skb);
|
|
#endif
|
|
}
|
|
|
|
netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
|
|
struct ixgbe_adapter *adapter,
|
|
struct ixgbe_ring *tx_ring)
|
|
{
|
|
struct ixgbe_tx_buffer *first;
|
|
int tso;
|
|
u32 tx_flags = 0;
|
|
unsigned short f;
|
|
u16 count = TXD_USE_COUNT(skb_headlen(skb));
|
|
__be16 protocol = skb->protocol;
|
|
u8 hdr_len = 0;
|
|
|
|
/*
|
|
* need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
|
|
* + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
|
|
* + 2 desc gap to keep tail from touching head,
|
|
* + 1 desc for context descriptor,
|
|
* otherwise try next time
|
|
*/
|
|
for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
|
|
count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
|
|
|
|
if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) {
|
|
tx_ring->tx_stats.tx_busy++;
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
/* record the location of the first descriptor for this packet */
|
|
first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
|
|
first->skb = skb;
|
|
first->bytecount = skb->len;
|
|
first->gso_segs = 1;
|
|
|
|
/* if we have a HW VLAN tag being added default to the HW one */
|
|
if (skb_vlan_tag_present(skb)) {
|
|
tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT;
|
|
tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
|
|
/* else if it is a SW VLAN check the next protocol and store the tag */
|
|
} else if (protocol == htons(ETH_P_8021Q)) {
|
|
struct vlan_hdr *vhdr, _vhdr;
|
|
vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr);
|
|
if (!vhdr)
|
|
goto out_drop;
|
|
|
|
tx_flags |= ntohs(vhdr->h_vlan_TCI) <<
|
|
IXGBE_TX_FLAGS_VLAN_SHIFT;
|
|
tx_flags |= IXGBE_TX_FLAGS_SW_VLAN;
|
|
}
|
|
protocol = vlan_get_protocol(skb);
|
|
|
|
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
|
|
adapter->ptp_clock &&
|
|
!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS,
|
|
&adapter->state)) {
|
|
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
|
|
tx_flags |= IXGBE_TX_FLAGS_TSTAMP;
|
|
|
|
/* schedule check for Tx timestamp */
|
|
adapter->ptp_tx_skb = skb_get(skb);
|
|
adapter->ptp_tx_start = jiffies;
|
|
schedule_work(&adapter->ptp_tx_work);
|
|
}
|
|
|
|
skb_tx_timestamp(skb);
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
/*
|
|
* Use the l2switch_enable flag - would be false if the DMA
|
|
* Tx switch had been disabled.
|
|
*/
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
|
|
tx_flags |= IXGBE_TX_FLAGS_CC;
|
|
|
|
#endif
|
|
/* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */
|
|
if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
|
|
((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) ||
|
|
(skb->priority != TC_PRIO_CONTROL))) {
|
|
tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
|
|
tx_flags |= (skb->priority & 0x7) <<
|
|
IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT;
|
|
if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) {
|
|
struct vlan_ethhdr *vhdr;
|
|
|
|
if (skb_cow_head(skb, 0))
|
|
goto out_drop;
|
|
vhdr = (struct vlan_ethhdr *)skb->data;
|
|
vhdr->h_vlan_TCI = htons(tx_flags >>
|
|
IXGBE_TX_FLAGS_VLAN_SHIFT);
|
|
} else {
|
|
tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
|
|
}
|
|
}
|
|
|
|
/* record initial flags and protocol */
|
|
first->tx_flags = tx_flags;
|
|
first->protocol = protocol;
|
|
|
|
#ifdef IXGBE_FCOE
|
|
/* setup tx offload for FCoE */
|
|
if ((protocol == htons(ETH_P_FCOE)) &&
|
|
(tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) {
|
|
tso = ixgbe_fso(tx_ring, first, &hdr_len);
|
|
if (tso < 0)
|
|
goto out_drop;
|
|
|
|
goto xmit_fcoe;
|
|
}
|
|
|
|
#endif /* IXGBE_FCOE */
|
|
tso = ixgbe_tso(tx_ring, first, &hdr_len);
|
|
if (tso < 0)
|
|
goto out_drop;
|
|
else if (!tso)
|
|
ixgbe_tx_csum(tx_ring, first);
|
|
|
|
/* add the ATR filter if ATR is on */
|
|
if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state))
|
|
ixgbe_atr(tx_ring, first);
|
|
|
|
#ifdef IXGBE_FCOE
|
|
xmit_fcoe:
|
|
#endif /* IXGBE_FCOE */
|
|
ixgbe_tx_map(tx_ring, first, hdr_len);
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
out_drop:
|
|
dev_kfree_skb_any(first->skb);
|
|
first->skb = NULL;
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb,
|
|
struct net_device *netdev,
|
|
struct ixgbe_ring *ring)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_ring *tx_ring;
|
|
|
|
/*
|
|
* The minimum packet size for olinfo paylen is 17 so pad the skb
|
|
* in order to meet this minimum size requirement.
|
|
*/
|
|
if (skb_put_padto(skb, 17))
|
|
return NETDEV_TX_OK;
|
|
|
|
tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping];
|
|
|
|
return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
|
|
}
|
|
|
|
static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
|
|
struct net_device *netdev)
|
|
{
|
|
return __ixgbe_xmit_frame(skb, netdev, NULL);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_mac - Change the Ethernet Address of the NIC
|
|
* @netdev: network interface device structure
|
|
* @p: pointer to an address structure
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int ixgbe_set_mac(struct net_device *netdev, void *p)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct sockaddr *addr = p;
|
|
int ret;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
ixgbe_del_mac_filter(adapter, hw->mac.addr, VMDQ_P(0));
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
|
|
|
|
ret = ixgbe_add_mac_filter(adapter, hw->mac.addr, VMDQ_P(0));
|
|
return ret > 0 ? 0 : ret;
|
|
}
|
|
|
|
static int
|
|
ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u16 value;
|
|
int rc;
|
|
|
|
if (prtad != hw->phy.mdio.prtad)
|
|
return -EINVAL;
|
|
rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
|
|
if (!rc)
|
|
rc = value;
|
|
return rc;
|
|
}
|
|
|
|
static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
|
|
u16 addr, u16 value)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
if (prtad != hw->phy.mdio.prtad)
|
|
return -EINVAL;
|
|
return hw->phy.ops.write_reg(hw, addr, devad, value);
|
|
}
|
|
|
|
static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
|
|
switch (cmd) {
|
|
case SIOCSHWTSTAMP:
|
|
return ixgbe_ptp_set_ts_config(adapter, req);
|
|
case SIOCGHWTSTAMP:
|
|
return ixgbe_ptp_get_ts_config(adapter, req);
|
|
default:
|
|
return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
|
|
* netdev->dev_addrs
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns non-zero on failure
|
|
**/
|
|
static int ixgbe_add_sanmac_netdev(struct net_device *dev)
|
|
{
|
|
int err = 0;
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
if (is_valid_ether_addr(hw->mac.san_addr)) {
|
|
rtnl_lock();
|
|
err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN);
|
|
rtnl_unlock();
|
|
|
|
/* update SAN MAC vmdq pool selection */
|
|
hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
|
|
* netdev->dev_addrs
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns non-zero on failure
|
|
**/
|
|
static int ixgbe_del_sanmac_netdev(struct net_device *dev)
|
|
{
|
|
int err = 0;
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
struct ixgbe_mac_info *mac = &adapter->hw.mac;
|
|
|
|
if (is_valid_ether_addr(mac->san_addr)) {
|
|
rtnl_lock();
|
|
err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
|
|
rtnl_unlock();
|
|
}
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/*
|
|
* Polling 'interrupt' - used by things like netconsole to send skbs
|
|
* without having to re-enable interrupts. It's not called while
|
|
* the interrupt routine is executing.
|
|
*/
|
|
static void ixgbe_netpoll(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
int i;
|
|
|
|
/* if interface is down do nothing */
|
|
if (test_bit(__IXGBE_DOWN, &adapter->state))
|
|
return;
|
|
|
|
adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
|
|
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
|
|
for (i = 0; i < adapter->num_q_vectors; i++)
|
|
ixgbe_msix_clean_rings(0, adapter->q_vector[i]);
|
|
} else {
|
|
ixgbe_intr(adapter->pdev->irq, netdev);
|
|
}
|
|
adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
|
|
}
|
|
|
|
#endif
|
|
static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
|
|
struct rtnl_link_stats64 *stats)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
int i;
|
|
|
|
rcu_read_lock();
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
|
|
u64 bytes, packets;
|
|
unsigned int start;
|
|
|
|
if (ring) {
|
|
do {
|
|
start = u64_stats_fetch_begin_irq(&ring->syncp);
|
|
packets = ring->stats.packets;
|
|
bytes = ring->stats.bytes;
|
|
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
|
|
stats->rx_packets += packets;
|
|
stats->rx_bytes += bytes;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct ixgbe_ring *ring = ACCESS_ONCE(adapter->tx_ring[i]);
|
|
u64 bytes, packets;
|
|
unsigned int start;
|
|
|
|
if (ring) {
|
|
do {
|
|
start = u64_stats_fetch_begin_irq(&ring->syncp);
|
|
packets = ring->stats.packets;
|
|
bytes = ring->stats.bytes;
|
|
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
|
|
stats->tx_packets += packets;
|
|
stats->tx_bytes += bytes;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
/* following stats updated by ixgbe_watchdog_task() */
|
|
stats->multicast = netdev->stats.multicast;
|
|
stats->rx_errors = netdev->stats.rx_errors;
|
|
stats->rx_length_errors = netdev->stats.rx_length_errors;
|
|
stats->rx_crc_errors = netdev->stats.rx_crc_errors;
|
|
stats->rx_missed_errors = netdev->stats.rx_missed_errors;
|
|
return stats;
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
/**
|
|
* ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
|
|
* @adapter: pointer to ixgbe_adapter
|
|
* @tc: number of traffic classes currently enabled
|
|
*
|
|
* Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
|
|
* 802.1Q priority maps to a packet buffer that exists.
|
|
*/
|
|
static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u32 reg, rsave;
|
|
int i;
|
|
|
|
/* 82598 have a static priority to TC mapping that can not
|
|
* be changed so no validation is needed.
|
|
*/
|
|
if (hw->mac.type == ixgbe_mac_82598EB)
|
|
return;
|
|
|
|
reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC);
|
|
rsave = reg;
|
|
|
|
for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
|
|
u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT);
|
|
|
|
/* If up2tc is out of bounds default to zero */
|
|
if (up2tc > tc)
|
|
reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT);
|
|
}
|
|
|
|
if (reg != rsave)
|
|
IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_prio_tc_map - Configure netdev prio tc map
|
|
* @adapter: Pointer to adapter struct
|
|
*
|
|
* Populate the netdev user priority to tc map
|
|
*/
|
|
static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *dev = adapter->netdev;
|
|
struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
|
|
struct ieee_ets *ets = adapter->ixgbe_ieee_ets;
|
|
u8 prio;
|
|
|
|
for (prio = 0; prio < MAX_USER_PRIORITY; prio++) {
|
|
u8 tc = 0;
|
|
|
|
if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)
|
|
tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio);
|
|
else if (ets)
|
|
tc = ets->prio_tc[prio];
|
|
|
|
netdev_set_prio_tc_map(dev, prio, tc);
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_IXGBE_DCB */
|
|
/**
|
|
* ixgbe_setup_tc - configure net_device for multiple traffic classes
|
|
*
|
|
* @netdev: net device to configure
|
|
* @tc: number of traffic classes to enable
|
|
*/
|
|
int ixgbe_setup_tc(struct net_device *dev, u8 tc)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
bool pools;
|
|
|
|
/* Hardware supports up to 8 traffic classes */
|
|
if (tc > adapter->dcb_cfg.num_tcs.pg_tcs ||
|
|
(hw->mac.type == ixgbe_mac_82598EB &&
|
|
tc < MAX_TRAFFIC_CLASS))
|
|
return -EINVAL;
|
|
|
|
pools = (find_first_zero_bit(&adapter->fwd_bitmask, 32) > 1);
|
|
if (tc && pools && adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS)
|
|
return -EBUSY;
|
|
|
|
/* Hardware has to reinitialize queues and interrupts to
|
|
* match packet buffer alignment. Unfortunately, the
|
|
* hardware is not flexible enough to do this dynamically.
|
|
*/
|
|
if (netif_running(dev))
|
|
ixgbe_close(dev);
|
|
ixgbe_clear_interrupt_scheme(adapter);
|
|
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
if (tc) {
|
|
netdev_set_num_tc(dev, tc);
|
|
ixgbe_set_prio_tc_map(adapter);
|
|
|
|
adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
|
|
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
|
|
adapter->last_lfc_mode = adapter->hw.fc.requested_mode;
|
|
adapter->hw.fc.requested_mode = ixgbe_fc_none;
|
|
}
|
|
} else {
|
|
netdev_reset_tc(dev);
|
|
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB)
|
|
adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
|
|
|
|
adapter->temp_dcb_cfg.pfc_mode_enable = false;
|
|
adapter->dcb_cfg.pfc_mode_enable = false;
|
|
}
|
|
|
|
ixgbe_validate_rtr(adapter, tc);
|
|
|
|
#endif /* CONFIG_IXGBE_DCB */
|
|
ixgbe_init_interrupt_scheme(adapter);
|
|
|
|
if (netif_running(dev))
|
|
return ixgbe_open(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
rtnl_lock();
|
|
ixgbe_setup_tc(netdev, netdev_get_num_tc(netdev));
|
|
rtnl_unlock();
|
|
}
|
|
|
|
#endif
|
|
void ixgbe_do_reset(struct net_device *netdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
|
|
if (netif_running(netdev))
|
|
ixgbe_reinit_locked(adapter);
|
|
else
|
|
ixgbe_reset(adapter);
|
|
}
|
|
|
|
static netdev_features_t ixgbe_fix_features(struct net_device *netdev,
|
|
netdev_features_t features)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* If Rx checksum is disabled, then RSC/LRO should also be disabled */
|
|
if (!(features & NETIF_F_RXCSUM))
|
|
features &= ~NETIF_F_LRO;
|
|
|
|
/* Turn off LRO if not RSC capable */
|
|
if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE))
|
|
features &= ~NETIF_F_LRO;
|
|
|
|
return features;
|
|
}
|
|
|
|
static int ixgbe_set_features(struct net_device *netdev,
|
|
netdev_features_t features)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(netdev);
|
|
netdev_features_t changed = netdev->features ^ features;
|
|
bool need_reset = false;
|
|
|
|
/* Make sure RSC matches LRO, reset if change */
|
|
if (!(features & NETIF_F_LRO)) {
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
|
|
need_reset = true;
|
|
adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
|
|
} else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) &&
|
|
!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) {
|
|
if (adapter->rx_itr_setting == 1 ||
|
|
adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) {
|
|
adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
|
|
need_reset = true;
|
|
} else if ((changed ^ features) & NETIF_F_LRO) {
|
|
e_info(probe, "rx-usecs set too low, "
|
|
"disabling RSC\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check if Flow Director n-tuple support was enabled or disabled. If
|
|
* the state changed, we need to reset.
|
|
*/
|
|
switch (features & NETIF_F_NTUPLE) {
|
|
case NETIF_F_NTUPLE:
|
|
/* turn off ATR, enable perfect filters and reset */
|
|
if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
|
|
need_reset = true;
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
|
|
adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
|
|
break;
|
|
default:
|
|
/* turn off perfect filters, enable ATR and reset */
|
|
if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
|
|
need_reset = true;
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
|
|
|
|
/* We cannot enable ATR if SR-IOV is enabled */
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
|
|
break;
|
|
|
|
/* We cannot enable ATR if we have 2 or more traffic classes */
|
|
if (netdev_get_num_tc(netdev) > 1)
|
|
break;
|
|
|
|
/* We cannot enable ATR if RSS is disabled */
|
|
if (adapter->ring_feature[RING_F_RSS].limit <= 1)
|
|
break;
|
|
|
|
/* A sample rate of 0 indicates ATR disabled */
|
|
if (!adapter->atr_sample_rate)
|
|
break;
|
|
|
|
adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
|
|
break;
|
|
}
|
|
|
|
if (features & NETIF_F_HW_VLAN_CTAG_RX)
|
|
ixgbe_vlan_strip_enable(adapter);
|
|
else
|
|
ixgbe_vlan_strip_disable(adapter);
|
|
|
|
if (changed & NETIF_F_RXALL)
|
|
need_reset = true;
|
|
|
|
netdev->features = features;
|
|
if (need_reset)
|
|
ixgbe_do_reset(netdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_add_vxlan_port - Get notifications about VXLAN ports that come up
|
|
* @dev: The port's netdev
|
|
* @sa_family: Socket Family that VXLAN is notifiying us about
|
|
* @port: New UDP port number that VXLAN started listening to
|
|
**/
|
|
static void ixgbe_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
|
|
__be16 port)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u16 new_port = ntohs(port);
|
|
|
|
if (sa_family == AF_INET6)
|
|
return;
|
|
|
|
if (adapter->vxlan_port == new_port) {
|
|
netdev_info(dev, "Port %d already offloaded\n", new_port);
|
|
return;
|
|
}
|
|
|
|
if (adapter->vxlan_port) {
|
|
netdev_info(dev,
|
|
"Hit Max num of UDP ports, not adding port %d\n",
|
|
new_port);
|
|
return;
|
|
}
|
|
|
|
adapter->vxlan_port = new_port;
|
|
IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, new_port);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_del_vxlan_port - Get notifications about VXLAN ports that go away
|
|
* @dev: The port's netdev
|
|
* @sa_family: Socket Family that VXLAN is notifying us about
|
|
* @port: UDP port number that VXLAN stopped listening to
|
|
**/
|
|
static void ixgbe_del_vxlan_port(struct net_device *dev, sa_family_t sa_family,
|
|
__be16 port)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u16 new_port = ntohs(port);
|
|
|
|
if (sa_family == AF_INET6)
|
|
return;
|
|
|
|
if (adapter->vxlan_port != new_port) {
|
|
netdev_info(dev, "Port %d was not found, not deleting\n",
|
|
new_port);
|
|
return;
|
|
}
|
|
|
|
adapter->vxlan_port = 0;
|
|
IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 0);
|
|
}
|
|
|
|
static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev,
|
|
const unsigned char *addr, u16 vid,
|
|
u16 flags)
|
|
{
|
|
/* guarantee we can provide a unique filter for the unicast address */
|
|
if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) {
|
|
if (IXGBE_MAX_PF_MACVLANS <= netdev_uc_count(dev))
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags);
|
|
}
|
|
|
|
static int ixgbe_ndo_bridge_setlink(struct net_device *dev,
|
|
struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
struct nlattr *attr, *br_spec;
|
|
int rem;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
|
|
return -EOPNOTSUPP;
|
|
|
|
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
|
|
if (!br_spec)
|
|
return -EINVAL;
|
|
|
|
nla_for_each_nested(attr, br_spec, rem) {
|
|
__u16 mode;
|
|
u32 reg = 0;
|
|
|
|
if (nla_type(attr) != IFLA_BRIDGE_MODE)
|
|
continue;
|
|
|
|
if (nla_len(attr) < sizeof(mode))
|
|
return -EINVAL;
|
|
|
|
mode = nla_get_u16(attr);
|
|
if (mode == BRIDGE_MODE_VEPA) {
|
|
reg = 0;
|
|
adapter->flags2 &= ~IXGBE_FLAG2_BRIDGE_MODE_VEB;
|
|
} else if (mode == BRIDGE_MODE_VEB) {
|
|
reg = IXGBE_PFDTXGSWC_VT_LBEN;
|
|
adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, reg);
|
|
|
|
e_info(drv, "enabling bridge mode: %s\n",
|
|
mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
|
|
struct net_device *dev,
|
|
u32 filter_mask)
|
|
{
|
|
struct ixgbe_adapter *adapter = netdev_priv(dev);
|
|
u16 mode;
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
|
|
return 0;
|
|
|
|
if (adapter->flags2 & IXGBE_FLAG2_BRIDGE_MODE_VEB)
|
|
mode = BRIDGE_MODE_VEB;
|
|
else
|
|
mode = BRIDGE_MODE_VEPA;
|
|
|
|
return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, 0, 0);
|
|
}
|
|
|
|
static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev)
|
|
{
|
|
struct ixgbe_fwd_adapter *fwd_adapter = NULL;
|
|
struct ixgbe_adapter *adapter = netdev_priv(pdev);
|
|
int used_pools = adapter->num_vfs + adapter->num_rx_pools;
|
|
unsigned int limit;
|
|
int pool, err;
|
|
|
|
/* Hardware has a limited number of available pools. Each VF, and the
|
|
* PF require a pool. Check to ensure we don't attempt to use more
|
|
* then the available number of pools.
|
|
*/
|
|
if (used_pools >= IXGBE_MAX_VF_FUNCTIONS)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
#ifdef CONFIG_RPS
|
|
if (vdev->num_rx_queues != vdev->num_tx_queues) {
|
|
netdev_info(pdev, "%s: Only supports a single queue count for TX and RX\n",
|
|
vdev->name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
#endif
|
|
/* Check for hardware restriction on number of rx/tx queues */
|
|
if (vdev->num_tx_queues > IXGBE_MAX_L2A_QUEUES ||
|
|
vdev->num_tx_queues == IXGBE_BAD_L2A_QUEUE) {
|
|
netdev_info(pdev,
|
|
"%s: Supports RX/TX Queue counts 1,2, and 4\n",
|
|
pdev->name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
|
|
adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS - 1) ||
|
|
(adapter->num_rx_pools > IXGBE_MAX_MACVLANS))
|
|
return ERR_PTR(-EBUSY);
|
|
|
|
fwd_adapter = kcalloc(1, sizeof(struct ixgbe_fwd_adapter), GFP_KERNEL);
|
|
if (!fwd_adapter)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
pool = find_first_zero_bit(&adapter->fwd_bitmask, 32);
|
|
adapter->num_rx_pools++;
|
|
set_bit(pool, &adapter->fwd_bitmask);
|
|
limit = find_last_bit(&adapter->fwd_bitmask, 32);
|
|
|
|
/* Enable VMDq flag so device will be set in VM mode */
|
|
adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED;
|
|
adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
|
|
adapter->ring_feature[RING_F_RSS].limit = vdev->num_tx_queues;
|
|
|
|
/* Force reinit of ring allocation with VMDQ enabled */
|
|
err = ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev));
|
|
if (err)
|
|
goto fwd_add_err;
|
|
fwd_adapter->pool = pool;
|
|
fwd_adapter->real_adapter = adapter;
|
|
err = ixgbe_fwd_ring_up(vdev, fwd_adapter);
|
|
if (err)
|
|
goto fwd_add_err;
|
|
netif_tx_start_all_queues(vdev);
|
|
return fwd_adapter;
|
|
fwd_add_err:
|
|
/* unwind counter and free adapter struct */
|
|
netdev_info(pdev,
|
|
"%s: dfwd hardware acceleration failed\n", vdev->name);
|
|
clear_bit(pool, &adapter->fwd_bitmask);
|
|
adapter->num_rx_pools--;
|
|
kfree(fwd_adapter);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static void ixgbe_fwd_del(struct net_device *pdev, void *priv)
|
|
{
|
|
struct ixgbe_fwd_adapter *fwd_adapter = priv;
|
|
struct ixgbe_adapter *adapter = fwd_adapter->real_adapter;
|
|
unsigned int limit;
|
|
|
|
clear_bit(fwd_adapter->pool, &adapter->fwd_bitmask);
|
|
adapter->num_rx_pools--;
|
|
|
|
limit = find_last_bit(&adapter->fwd_bitmask, 32);
|
|
adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
|
|
ixgbe_fwd_ring_down(fwd_adapter->netdev, fwd_adapter);
|
|
ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev));
|
|
netdev_dbg(pdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
|
|
fwd_adapter->pool, adapter->num_rx_pools,
|
|
fwd_adapter->rx_base_queue,
|
|
fwd_adapter->rx_base_queue + adapter->num_rx_queues_per_pool,
|
|
adapter->fwd_bitmask);
|
|
kfree(fwd_adapter);
|
|
}
|
|
|
|
static const struct net_device_ops ixgbe_netdev_ops = {
|
|
.ndo_open = ixgbe_open,
|
|
.ndo_stop = ixgbe_close,
|
|
.ndo_start_xmit = ixgbe_xmit_frame,
|
|
.ndo_select_queue = ixgbe_select_queue,
|
|
.ndo_set_rx_mode = ixgbe_set_rx_mode,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = ixgbe_set_mac,
|
|
.ndo_change_mtu = ixgbe_change_mtu,
|
|
.ndo_tx_timeout = ixgbe_tx_timeout,
|
|
.ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
|
|
.ndo_do_ioctl = ixgbe_ioctl,
|
|
.ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
|
|
.ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
|
|
.ndo_set_vf_rate = ixgbe_ndo_set_vf_bw,
|
|
.ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk,
|
|
.ndo_get_vf_config = ixgbe_ndo_get_vf_config,
|
|
.ndo_get_stats64 = ixgbe_get_stats64,
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
.ndo_setup_tc = ixgbe_setup_tc,
|
|
#endif
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = ixgbe_netpoll,
|
|
#endif
|
|
#ifdef CONFIG_NET_RX_BUSY_POLL
|
|
.ndo_busy_poll = ixgbe_low_latency_recv,
|
|
#endif
|
|
#ifdef IXGBE_FCOE
|
|
.ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
|
|
.ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target,
|
|
.ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
|
|
.ndo_fcoe_enable = ixgbe_fcoe_enable,
|
|
.ndo_fcoe_disable = ixgbe_fcoe_disable,
|
|
.ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
|
|
.ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo,
|
|
#endif /* IXGBE_FCOE */
|
|
.ndo_set_features = ixgbe_set_features,
|
|
.ndo_fix_features = ixgbe_fix_features,
|
|
.ndo_fdb_add = ixgbe_ndo_fdb_add,
|
|
.ndo_bridge_setlink = ixgbe_ndo_bridge_setlink,
|
|
.ndo_bridge_getlink = ixgbe_ndo_bridge_getlink,
|
|
.ndo_dfwd_add_station = ixgbe_fwd_add,
|
|
.ndo_dfwd_del_station = ixgbe_fwd_del,
|
|
.ndo_add_vxlan_port = ixgbe_add_vxlan_port,
|
|
.ndo_del_vxlan_port = ixgbe_del_vxlan_port,
|
|
};
|
|
|
|
/**
|
|
* ixgbe_enumerate_functions - Get the number of ports this device has
|
|
* @adapter: adapter structure
|
|
*
|
|
* This function enumerates the phsyical functions co-located on a single slot,
|
|
* in order to determine how many ports a device has. This is most useful in
|
|
* determining the required GT/s of PCIe bandwidth necessary for optimal
|
|
* performance.
|
|
**/
|
|
static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter)
|
|
{
|
|
struct pci_dev *entry, *pdev = adapter->pdev;
|
|
int physfns = 0;
|
|
|
|
/* Some cards can not use the generic count PCIe functions method,
|
|
* because they are behind a parent switch, so we hardcode these with
|
|
* the correct number of functions.
|
|
*/
|
|
if (ixgbe_pcie_from_parent(&adapter->hw))
|
|
physfns = 4;
|
|
|
|
list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) {
|
|
/* don't count virtual functions */
|
|
if (entry->is_virtfn)
|
|
continue;
|
|
|
|
/* When the devices on the bus don't all match our device ID,
|
|
* we can't reliably determine the correct number of
|
|
* functions. This can occur if a function has been direct
|
|
* attached to a virtual machine using VT-d, for example. In
|
|
* this case, simply return -1 to indicate this.
|
|
*/
|
|
if ((entry->vendor != pdev->vendor) ||
|
|
(entry->device != pdev->device))
|
|
return -1;
|
|
|
|
physfns++;
|
|
}
|
|
|
|
return physfns;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_wol_supported - Check whether device supports WoL
|
|
* @hw: hw specific details
|
|
* @device_id: the device ID
|
|
* @subdev_id: the subsystem device ID
|
|
*
|
|
* This function is used by probe and ethtool to determine
|
|
* which devices have WoL support
|
|
*
|
|
**/
|
|
int ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id,
|
|
u16 subdevice_id)
|
|
{
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK;
|
|
int is_wol_supported = 0;
|
|
|
|
switch (device_id) {
|
|
case IXGBE_DEV_ID_82599_SFP:
|
|
/* Only these subdevices could supports WOL */
|
|
switch (subdevice_id) {
|
|
case IXGBE_SUBDEV_ID_82599_SFP_WOL0:
|
|
case IXGBE_SUBDEV_ID_82599_560FLR:
|
|
/* only support first port */
|
|
if (hw->bus.func != 0)
|
|
break;
|
|
case IXGBE_SUBDEV_ID_82599_SP_560FLR:
|
|
case IXGBE_SUBDEV_ID_82599_SFP:
|
|
case IXGBE_SUBDEV_ID_82599_RNDC:
|
|
case IXGBE_SUBDEV_ID_82599_ECNA_DP:
|
|
case IXGBE_SUBDEV_ID_82599_LOM_SFP:
|
|
is_wol_supported = 1;
|
|
break;
|
|
}
|
|
break;
|
|
case IXGBE_DEV_ID_82599EN_SFP:
|
|
/* Only this subdevice supports WOL */
|
|
switch (subdevice_id) {
|
|
case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1:
|
|
is_wol_supported = 1;
|
|
break;
|
|
}
|
|
break;
|
|
case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
|
|
/* All except this subdevice support WOL */
|
|
if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ)
|
|
is_wol_supported = 1;
|
|
break;
|
|
case IXGBE_DEV_ID_82599_KX4:
|
|
is_wol_supported = 1;
|
|
break;
|
|
case IXGBE_DEV_ID_X540T:
|
|
case IXGBE_DEV_ID_X540T1:
|
|
/* check eeprom to see if enabled wol */
|
|
if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) ||
|
|
((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) &&
|
|
(hw->bus.func == 0))) {
|
|
is_wol_supported = 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return is_wol_supported;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_get_platform_mac_addr - Look up MAC address in Open Firmware / IDPROM
|
|
* @adapter: Pointer to adapter struct
|
|
*/
|
|
static void ixgbe_get_platform_mac_addr(struct ixgbe_adapter *adapter)
|
|
{
|
|
#ifdef CONFIG_OF
|
|
struct device_node *dp = pci_device_to_OF_node(adapter->pdev);
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
const unsigned char *addr;
|
|
|
|
addr = of_get_mac_address(dp);
|
|
if (addr) {
|
|
ether_addr_copy(hw->mac.perm_addr, addr);
|
|
return;
|
|
}
|
|
#endif /* CONFIG_OF */
|
|
|
|
#ifdef CONFIG_SPARC
|
|
ether_addr_copy(hw->mac.perm_addr, idprom->id_ethaddr);
|
|
#endif /* CONFIG_SPARC */
|
|
}
|
|
|
|
/**
|
|
* ixgbe_probe - Device Initialization Routine
|
|
* @pdev: PCI device information struct
|
|
* @ent: entry in ixgbe_pci_tbl
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
*
|
|
* ixgbe_probe initializes an adapter identified by a pci_dev structure.
|
|
* The OS initialization, configuring of the adapter private structure,
|
|
* and a hardware reset occur.
|
|
**/
|
|
static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *netdev;
|
|
struct ixgbe_adapter *adapter = NULL;
|
|
struct ixgbe_hw *hw;
|
|
const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
|
|
int i, err, pci_using_dac, expected_gts;
|
|
unsigned int indices = MAX_TX_QUEUES;
|
|
u8 part_str[IXGBE_PBANUM_LENGTH];
|
|
bool disable_dev = false;
|
|
#ifdef IXGBE_FCOE
|
|
u16 device_caps;
|
|
#endif
|
|
u32 eec;
|
|
|
|
/* Catch broken hardware that put the wrong VF device ID in
|
|
* the PCIe SR-IOV capability.
|
|
*/
|
|
if (pdev->is_virtfn) {
|
|
WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
|
|
pci_name(pdev), pdev->vendor, pdev->device);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
|
|
pci_using_dac = 1;
|
|
} else {
|
|
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
dev_err(&pdev->dev,
|
|
"No usable DMA configuration, aborting\n");
|
|
goto err_dma;
|
|
}
|
|
pci_using_dac = 0;
|
|
}
|
|
|
|
err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
|
|
IORESOURCE_MEM), ixgbe_driver_name);
|
|
if (err) {
|
|
dev_err(&pdev->dev,
|
|
"pci_request_selected_regions failed 0x%x\n", err);
|
|
goto err_pci_reg;
|
|
}
|
|
|
|
pci_enable_pcie_error_reporting(pdev);
|
|
|
|
pci_set_master(pdev);
|
|
pci_save_state(pdev);
|
|
|
|
if (ii->mac == ixgbe_mac_82598EB) {
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
/* 8 TC w/ 4 queues per TC */
|
|
indices = 4 * MAX_TRAFFIC_CLASS;
|
|
#else
|
|
indices = IXGBE_MAX_RSS_INDICES;
|
|
#endif
|
|
}
|
|
|
|
netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
|
|
if (!netdev) {
|
|
err = -ENOMEM;
|
|
goto err_alloc_etherdev;
|
|
}
|
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
adapter = netdev_priv(netdev);
|
|
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
hw = &adapter->hw;
|
|
hw->back = adapter;
|
|
adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
|
|
|
|
hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
adapter->io_addr = hw->hw_addr;
|
|
if (!hw->hw_addr) {
|
|
err = -EIO;
|
|
goto err_ioremap;
|
|
}
|
|
|
|
netdev->netdev_ops = &ixgbe_netdev_ops;
|
|
ixgbe_set_ethtool_ops(netdev);
|
|
netdev->watchdog_timeo = 5 * HZ;
|
|
strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
|
|
|
|
/* Setup hw api */
|
|
memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
|
|
hw->mac.type = ii->mac;
|
|
|
|
/* EEPROM */
|
|
memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
|
|
eec = IXGBE_READ_REG(hw, IXGBE_EEC);
|
|
if (ixgbe_removed(hw->hw_addr)) {
|
|
err = -EIO;
|
|
goto err_ioremap;
|
|
}
|
|
/* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
|
|
if (!(eec & (1 << 8)))
|
|
hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
|
|
|
|
/* PHY */
|
|
memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
|
|
hw->phy.sfp_type = ixgbe_sfp_type_unknown;
|
|
/* ixgbe_identify_phy_generic will set prtad and mmds properly */
|
|
hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
|
|
hw->phy.mdio.mmds = 0;
|
|
hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
|
|
hw->phy.mdio.dev = netdev;
|
|
hw->phy.mdio.mdio_read = ixgbe_mdio_read;
|
|
hw->phy.mdio.mdio_write = ixgbe_mdio_write;
|
|
|
|
ii->get_invariants(hw);
|
|
|
|
/* setup the private structure */
|
|
err = ixgbe_sw_init(adapter);
|
|
if (err)
|
|
goto err_sw_init;
|
|
|
|
/* Make it possible the adapter to be woken up via WOL */
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If there is a fan on this device and it has failed log the
|
|
* failure.
|
|
*/
|
|
if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
|
|
u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
|
|
if (esdp & IXGBE_ESDP_SDP1)
|
|
e_crit(probe, "Fan has stopped, replace the adapter\n");
|
|
}
|
|
|
|
if (allow_unsupported_sfp)
|
|
hw->allow_unsupported_sfp = allow_unsupported_sfp;
|
|
|
|
/* reset_hw fills in the perm_addr as well */
|
|
hw->phy.reset_if_overtemp = true;
|
|
err = hw->mac.ops.reset_hw(hw);
|
|
hw->phy.reset_if_overtemp = false;
|
|
if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
|
|
hw->mac.type == ixgbe_mac_82598EB) {
|
|
err = 0;
|
|
} else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
|
|
e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
|
|
e_dev_err("Reload the driver after installing a supported module.\n");
|
|
goto err_sw_init;
|
|
} else if (err) {
|
|
e_dev_err("HW Init failed: %d\n", err);
|
|
goto err_sw_init;
|
|
}
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
/* SR-IOV not supported on the 82598 */
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB)
|
|
goto skip_sriov;
|
|
/* Mailbox */
|
|
ixgbe_init_mbx_params_pf(hw);
|
|
memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops));
|
|
pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT);
|
|
ixgbe_enable_sriov(adapter);
|
|
skip_sriov:
|
|
|
|
#endif
|
|
netdev->features = NETIF_F_SG |
|
|
NETIF_F_IP_CSUM |
|
|
NETIF_F_IPV6_CSUM |
|
|
NETIF_F_HW_VLAN_CTAG_TX |
|
|
NETIF_F_HW_VLAN_CTAG_RX |
|
|
NETIF_F_HW_VLAN_CTAG_FILTER |
|
|
NETIF_F_TSO |
|
|
NETIF_F_TSO6 |
|
|
NETIF_F_RXHASH |
|
|
NETIF_F_RXCSUM;
|
|
|
|
netdev->hw_features = netdev->features | NETIF_F_HW_L2FW_DOFFLOAD;
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
case ixgbe_mac_X540:
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
netdev->features |= NETIF_F_SCTP_CSUM;
|
|
netdev->hw_features |= NETIF_F_SCTP_CSUM |
|
|
NETIF_F_NTUPLE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
netdev->hw_features |= NETIF_F_RXALL;
|
|
|
|
netdev->vlan_features |= NETIF_F_TSO;
|
|
netdev->vlan_features |= NETIF_F_TSO6;
|
|
netdev->vlan_features |= NETIF_F_IP_CSUM;
|
|
netdev->vlan_features |= NETIF_F_IPV6_CSUM;
|
|
netdev->vlan_features |= NETIF_F_SG;
|
|
|
|
netdev->priv_flags |= IFF_UNICAST_FLT;
|
|
netdev->priv_flags |= IFF_SUPP_NOFCS;
|
|
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_X550:
|
|
case ixgbe_mac_X550EM_x:
|
|
netdev->hw_enc_features |= NETIF_F_RXCSUM;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCB
|
|
netdev->dcbnl_ops = &dcbnl_ops;
|
|
#endif
|
|
|
|
#ifdef IXGBE_FCOE
|
|
if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
|
|
unsigned int fcoe_l;
|
|
|
|
if (hw->mac.ops.get_device_caps) {
|
|
hw->mac.ops.get_device_caps(hw, &device_caps);
|
|
if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
|
|
adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
|
|
}
|
|
|
|
|
|
fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus());
|
|
adapter->ring_feature[RING_F_FCOE].limit = fcoe_l;
|
|
|
|
netdev->features |= NETIF_F_FSO |
|
|
NETIF_F_FCOE_CRC;
|
|
|
|
netdev->vlan_features |= NETIF_F_FSO |
|
|
NETIF_F_FCOE_CRC |
|
|
NETIF_F_FCOE_MTU;
|
|
}
|
|
#endif /* IXGBE_FCOE */
|
|
if (pci_using_dac) {
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
netdev->vlan_features |= NETIF_F_HIGHDMA;
|
|
}
|
|
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
|
|
netdev->hw_features |= NETIF_F_LRO;
|
|
if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
|
|
netdev->features |= NETIF_F_LRO;
|
|
|
|
/* make sure the EEPROM is good */
|
|
if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
|
|
e_dev_err("The EEPROM Checksum Is Not Valid\n");
|
|
err = -EIO;
|
|
goto err_sw_init;
|
|
}
|
|
|
|
ixgbe_get_platform_mac_addr(adapter);
|
|
|
|
memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
|
|
|
|
if (!is_valid_ether_addr(netdev->dev_addr)) {
|
|
e_dev_err("invalid MAC address\n");
|
|
err = -EIO;
|
|
goto err_sw_init;
|
|
}
|
|
|
|
ixgbe_mac_set_default_filter(adapter, hw->mac.perm_addr);
|
|
|
|
setup_timer(&adapter->service_timer, &ixgbe_service_timer,
|
|
(unsigned long) adapter);
|
|
|
|
if (ixgbe_removed(hw->hw_addr)) {
|
|
err = -EIO;
|
|
goto err_sw_init;
|
|
}
|
|
INIT_WORK(&adapter->service_task, ixgbe_service_task);
|
|
set_bit(__IXGBE_SERVICE_INITED, &adapter->state);
|
|
clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
|
|
|
|
err = ixgbe_init_interrupt_scheme(adapter);
|
|
if (err)
|
|
goto err_sw_init;
|
|
|
|
/* WOL not supported for all devices */
|
|
adapter->wol = 0;
|
|
hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap);
|
|
hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device,
|
|
pdev->subsystem_device);
|
|
if (hw->wol_enabled)
|
|
adapter->wol = IXGBE_WUFC_MAG;
|
|
|
|
device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
|
|
|
|
/* save off EEPROM version number */
|
|
hw->eeprom.ops.read(hw, 0x2e, &adapter->eeprom_verh);
|
|
hw->eeprom.ops.read(hw, 0x2d, &adapter->eeprom_verl);
|
|
|
|
/* pick up the PCI bus settings for reporting later */
|
|
hw->mac.ops.get_bus_info(hw);
|
|
if (ixgbe_pcie_from_parent(hw))
|
|
ixgbe_get_parent_bus_info(adapter);
|
|
|
|
/* calculate the expected PCIe bandwidth required for optimal
|
|
* performance. Note that some older parts will never have enough
|
|
* bandwidth due to being older generation PCIe parts. We clamp these
|
|
* parts to ensure no warning is displayed if it can't be fixed.
|
|
*/
|
|
switch (hw->mac.type) {
|
|
case ixgbe_mac_82598EB:
|
|
expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16);
|
|
break;
|
|
default:
|
|
expected_gts = ixgbe_enumerate_functions(adapter) * 10;
|
|
break;
|
|
}
|
|
|
|
/* don't check link if we failed to enumerate functions */
|
|
if (expected_gts > 0)
|
|
ixgbe_check_minimum_link(adapter, expected_gts);
|
|
|
|
err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str));
|
|
if (err)
|
|
strlcpy(part_str, "Unknown", sizeof(part_str));
|
|
if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
|
|
e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
|
|
hw->mac.type, hw->phy.type, hw->phy.sfp_type,
|
|
part_str);
|
|
else
|
|
e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
|
|
hw->mac.type, hw->phy.type, part_str);
|
|
|
|
e_dev_info("%pM\n", netdev->dev_addr);
|
|
|
|
/* reset the hardware with the new settings */
|
|
err = hw->mac.ops.start_hw(hw);
|
|
if (err == IXGBE_ERR_EEPROM_VERSION) {
|
|
/* We are running on a pre-production device, log a warning */
|
|
e_dev_warn("This device is a pre-production adapter/LOM. "
|
|
"Please be aware there may be issues associated "
|
|
"with your hardware. If you are experiencing "
|
|
"problems please contact your Intel or hardware "
|
|
"representative who provided you with this "
|
|
"hardware.\n");
|
|
}
|
|
strcpy(netdev->name, "eth%d");
|
|
err = register_netdev(netdev);
|
|
if (err)
|
|
goto err_register;
|
|
|
|
pci_set_drvdata(pdev, adapter);
|
|
|
|
/* power down the optics for 82599 SFP+ fiber */
|
|
if (hw->mac.ops.disable_tx_laser)
|
|
hw->mac.ops.disable_tx_laser(hw);
|
|
|
|
/* carrier off reporting is important to ethtool even BEFORE open */
|
|
netif_carrier_off(netdev);
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
if (dca_add_requester(&pdev->dev) == 0) {
|
|
adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
|
|
ixgbe_setup_dca(adapter);
|
|
}
|
|
#endif
|
|
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
|
|
e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
|
|
for (i = 0; i < adapter->num_vfs; i++)
|
|
ixgbe_vf_configuration(pdev, (i | 0x10000000));
|
|
}
|
|
|
|
/* firmware requires driver version to be 0xFFFFFFFF
|
|
* since os does not support feature
|
|
*/
|
|
if (hw->mac.ops.set_fw_drv_ver)
|
|
hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF,
|
|
0xFF);
|
|
|
|
/* add san mac addr to netdev */
|
|
ixgbe_add_sanmac_netdev(netdev);
|
|
|
|
e_dev_info("%s\n", ixgbe_default_device_descr);
|
|
|
|
#ifdef CONFIG_IXGBE_HWMON
|
|
if (ixgbe_sysfs_init(adapter))
|
|
e_err(probe, "failed to allocate sysfs resources\n");
|
|
#endif /* CONFIG_IXGBE_HWMON */
|
|
|
|
ixgbe_dbg_adapter_init(adapter);
|
|
|
|
/* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */
|
|
if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link)
|
|
hw->mac.ops.setup_link(hw,
|
|
IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL,
|
|
true);
|
|
|
|
return 0;
|
|
|
|
err_register:
|
|
ixgbe_release_hw_control(adapter);
|
|
ixgbe_clear_interrupt_scheme(adapter);
|
|
err_sw_init:
|
|
ixgbe_disable_sriov(adapter);
|
|
adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
|
|
iounmap(adapter->io_addr);
|
|
kfree(adapter->mac_table);
|
|
err_ioremap:
|
|
disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_selected_regions(pdev,
|
|
pci_select_bars(pdev, IORESOURCE_MEM));
|
|
err_pci_reg:
|
|
err_dma:
|
|
if (!adapter || disable_dev)
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_remove - Device Removal Routine
|
|
* @pdev: PCI device information struct
|
|
*
|
|
* ixgbe_remove is called by the PCI subsystem to alert the driver
|
|
* that it should release a PCI device. The could be caused by a
|
|
* Hot-Plug event, or because the driver is going to be removed from
|
|
* memory.
|
|
**/
|
|
static void ixgbe_remove(struct pci_dev *pdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
|
|
struct net_device *netdev;
|
|
bool disable_dev;
|
|
|
|
/* if !adapter then we already cleaned up in probe */
|
|
if (!adapter)
|
|
return;
|
|
|
|
netdev = adapter->netdev;
|
|
ixgbe_dbg_adapter_exit(adapter);
|
|
|
|
set_bit(__IXGBE_REMOVING, &adapter->state);
|
|
cancel_work_sync(&adapter->service_task);
|
|
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
|
|
adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
|
|
dca_remove_requester(&pdev->dev);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
|
|
}
|
|
|
|
#endif
|
|
#ifdef CONFIG_IXGBE_HWMON
|
|
ixgbe_sysfs_exit(adapter);
|
|
#endif /* CONFIG_IXGBE_HWMON */
|
|
|
|
/* remove the added san mac */
|
|
ixgbe_del_sanmac_netdev(netdev);
|
|
|
|
if (netdev->reg_state == NETREG_REGISTERED)
|
|
unregister_netdev(netdev);
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
/*
|
|
* Only disable SR-IOV on unload if the user specified the now
|
|
* deprecated max_vfs module parameter.
|
|
*/
|
|
if (max_vfs)
|
|
ixgbe_disable_sriov(adapter);
|
|
#endif
|
|
ixgbe_clear_interrupt_scheme(adapter);
|
|
|
|
ixgbe_release_hw_control(adapter);
|
|
|
|
#ifdef CONFIG_DCB
|
|
kfree(adapter->ixgbe_ieee_pfc);
|
|
kfree(adapter->ixgbe_ieee_ets);
|
|
|
|
#endif
|
|
iounmap(adapter->io_addr);
|
|
pci_release_selected_regions(pdev, pci_select_bars(pdev,
|
|
IORESOURCE_MEM));
|
|
|
|
e_dev_info("complete\n");
|
|
|
|
kfree(adapter->mac_table);
|
|
disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
|
|
free_netdev(netdev);
|
|
|
|
pci_disable_pcie_error_reporting(pdev);
|
|
|
|
if (disable_dev)
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_io_error_detected - called when PCI error is detected
|
|
* @pdev: Pointer to PCI device
|
|
* @state: The current pci connection state
|
|
*
|
|
* This function is called after a PCI bus error affecting
|
|
* this device has been detected.
|
|
*/
|
|
static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
|
|
pci_channel_state_t state)
|
|
{
|
|
struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
struct pci_dev *bdev, *vfdev;
|
|
u32 dw0, dw1, dw2, dw3;
|
|
int vf, pos;
|
|
u16 req_id, pf_func;
|
|
|
|
if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
|
|
adapter->num_vfs == 0)
|
|
goto skip_bad_vf_detection;
|
|
|
|
bdev = pdev->bus->self;
|
|
while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT))
|
|
bdev = bdev->bus->self;
|
|
|
|
if (!bdev)
|
|
goto skip_bad_vf_detection;
|
|
|
|
pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR);
|
|
if (!pos)
|
|
goto skip_bad_vf_detection;
|
|
|
|
dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG);
|
|
dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4);
|
|
dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8);
|
|
dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12);
|
|
if (ixgbe_removed(hw->hw_addr))
|
|
goto skip_bad_vf_detection;
|
|
|
|
req_id = dw1 >> 16;
|
|
/* On the 82599 if bit 7 of the requestor ID is set then it's a VF */
|
|
if (!(req_id & 0x0080))
|
|
goto skip_bad_vf_detection;
|
|
|
|
pf_func = req_id & 0x01;
|
|
if ((pf_func & 1) == (pdev->devfn & 1)) {
|
|
unsigned int device_id;
|
|
|
|
vf = (req_id & 0x7F) >> 1;
|
|
e_dev_err("VF %d has caused a PCIe error\n", vf);
|
|
e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
|
|
"%8.8x\tdw3: %8.8x\n",
|
|
dw0, dw1, dw2, dw3);
|
|
switch (adapter->hw.mac.type) {
|
|
case ixgbe_mac_82599EB:
|
|
device_id = IXGBE_82599_VF_DEVICE_ID;
|
|
break;
|
|
case ixgbe_mac_X540:
|
|
device_id = IXGBE_X540_VF_DEVICE_ID;
|
|
break;
|
|
case ixgbe_mac_X550:
|
|
device_id = IXGBE_DEV_ID_X550_VF;
|
|
break;
|
|
case ixgbe_mac_X550EM_x:
|
|
device_id = IXGBE_DEV_ID_X550EM_X_VF;
|
|
break;
|
|
default:
|
|
device_id = 0;
|
|
break;
|
|
}
|
|
|
|
/* Find the pci device of the offending VF */
|
|
vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL);
|
|
while (vfdev) {
|
|
if (vfdev->devfn == (req_id & 0xFF))
|
|
break;
|
|
vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
|
|
device_id, vfdev);
|
|
}
|
|
/*
|
|
* There's a slim chance the VF could have been hot plugged,
|
|
* so if it is no longer present we don't need to issue the
|
|
* VFLR. Just clean up the AER in that case.
|
|
*/
|
|
if (vfdev) {
|
|
ixgbe_issue_vf_flr(adapter, vfdev);
|
|
/* Free device reference count */
|
|
pci_dev_put(vfdev);
|
|
}
|
|
|
|
pci_cleanup_aer_uncorrect_error_status(pdev);
|
|
}
|
|
|
|
/*
|
|
* Even though the error may have occurred on the other port
|
|
* we still need to increment the vf error reference count for
|
|
* both ports because the I/O resume function will be called
|
|
* for both of them.
|
|
*/
|
|
adapter->vferr_refcount++;
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
|
|
skip_bad_vf_detection:
|
|
#endif /* CONFIG_PCI_IOV */
|
|
if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
|
|
rtnl_lock();
|
|
netif_device_detach(netdev);
|
|
|
|
if (state == pci_channel_io_perm_failure) {
|
|
rtnl_unlock();
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
|
|
if (netif_running(netdev))
|
|
ixgbe_down(adapter);
|
|
|
|
if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
|
|
pci_disable_device(pdev);
|
|
rtnl_unlock();
|
|
|
|
/* Request a slot reset. */
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_io_slot_reset - called after the pci bus has been reset.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* Restart the card from scratch, as if from a cold-boot.
|
|
*/
|
|
static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
|
|
pci_ers_result_t result;
|
|
int err;
|
|
|
|
if (pci_enable_device_mem(pdev)) {
|
|
e_err(probe, "Cannot re-enable PCI device after reset.\n");
|
|
result = PCI_ERS_RESULT_DISCONNECT;
|
|
} else {
|
|
smp_mb__before_atomic();
|
|
clear_bit(__IXGBE_DISABLED, &adapter->state);
|
|
adapter->hw.hw_addr = adapter->io_addr;
|
|
pci_set_master(pdev);
|
|
pci_restore_state(pdev);
|
|
pci_save_state(pdev);
|
|
|
|
pci_wake_from_d3(pdev, false);
|
|
|
|
ixgbe_reset(adapter);
|
|
IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
|
|
result = PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
err = pci_cleanup_aer_uncorrect_error_status(pdev);
|
|
if (err) {
|
|
e_dev_err("pci_cleanup_aer_uncorrect_error_status "
|
|
"failed 0x%0x\n", err);
|
|
/* non-fatal, continue */
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_io_resume - called when traffic can start flowing again.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* This callback is called when the error recovery driver tells us that
|
|
* its OK to resume normal operation.
|
|
*/
|
|
static void ixgbe_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
if (adapter->vferr_refcount) {
|
|
e_info(drv, "Resuming after VF err\n");
|
|
adapter->vferr_refcount--;
|
|
return;
|
|
}
|
|
|
|
#endif
|
|
if (netif_running(netdev))
|
|
ixgbe_up(adapter);
|
|
|
|
netif_device_attach(netdev);
|
|
}
|
|
|
|
static const struct pci_error_handlers ixgbe_err_handler = {
|
|
.error_detected = ixgbe_io_error_detected,
|
|
.slot_reset = ixgbe_io_slot_reset,
|
|
.resume = ixgbe_io_resume,
|
|
};
|
|
|
|
static struct pci_driver ixgbe_driver = {
|
|
.name = ixgbe_driver_name,
|
|
.id_table = ixgbe_pci_tbl,
|
|
.probe = ixgbe_probe,
|
|
.remove = ixgbe_remove,
|
|
#ifdef CONFIG_PM
|
|
.suspend = ixgbe_suspend,
|
|
.resume = ixgbe_resume,
|
|
#endif
|
|
.shutdown = ixgbe_shutdown,
|
|
.sriov_configure = ixgbe_pci_sriov_configure,
|
|
.err_handler = &ixgbe_err_handler
|
|
};
|
|
|
|
/**
|
|
* ixgbe_init_module - Driver Registration Routine
|
|
*
|
|
* ixgbe_init_module is the first routine called when the driver is
|
|
* loaded. All it does is register with the PCI subsystem.
|
|
**/
|
|
static int __init ixgbe_init_module(void)
|
|
{
|
|
int ret;
|
|
pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
|
|
pr_info("%s\n", ixgbe_copyright);
|
|
|
|
ixgbe_dbg_init();
|
|
|
|
ret = pci_register_driver(&ixgbe_driver);
|
|
if (ret) {
|
|
ixgbe_dbg_exit();
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
dca_register_notify(&dca_notifier);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_init(ixgbe_init_module);
|
|
|
|
/**
|
|
* ixgbe_exit_module - Driver Exit Cleanup Routine
|
|
*
|
|
* ixgbe_exit_module is called just before the driver is removed
|
|
* from memory.
|
|
**/
|
|
static void __exit ixgbe_exit_module(void)
|
|
{
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
dca_unregister_notify(&dca_notifier);
|
|
#endif
|
|
pci_unregister_driver(&ixgbe_driver);
|
|
|
|
ixgbe_dbg_exit();
|
|
|
|
rcu_barrier(); /* Wait for completion of call_rcu()'s */
|
|
}
|
|
|
|
#ifdef CONFIG_IXGBE_DCA
|
|
static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
|
|
void *p)
|
|
{
|
|
int ret_val;
|
|
|
|
ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
|
|
__ixgbe_notify_dca);
|
|
|
|
return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
|
|
}
|
|
|
|
#endif /* CONFIG_IXGBE_DCA */
|
|
|
|
module_exit(ixgbe_exit_module);
|
|
|
|
/* ixgbe_main.c */
|