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qlcnic: Enable Tx queue changes using ethtool for 82xx Series adapter.

Browse source 
o using ethtool {set|get}_channel option, user can change number
  of Tx queues for 82xx Series adapter.
o updated ethtool -S <ethX> option to display stats from each Tx queue.

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Himanshu Madhani 2013-08-21 11:24:11 -04:00 • committed by David S. Miller
commit aa4a1f7df7
8 changed files with 145 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

10
drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
View file

@ -1531,8 +1531,9 @@ int qlcnic_reset_context(struct qlcnic_adapter *);
void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings);
int qlcnic_diag_alloc_res(struct net_device *netdev, int test);
netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
int qlcnic_set_max_rss(struct qlcnic_adapter *, u8, size_t);
int qlcnic_set_max_rss(struct qlcnic_adapter *, u8, int);
int qlcnic_validate_max_rss(struct qlcnic_adapter *, __u32);
int qlcnic_validate_max_tx_rings(struct qlcnic_adapter *, int);
void qlcnic_alloc_lb_filters_mem(struct qlcnic_adapter *adapter);
void qlcnic_82xx_set_mac_filter_count(struct qlcnic_adapter *);
int qlcnic_enable_msix(struct qlcnic_adapter *, u32);
@ -1679,7 +1680,7 @@ struct qlcnic_hardware_ops {
int (*write_reg) (struct qlcnic_adapter *, ulong, u32);
void (*get_ocm_win) (struct qlcnic_hardware_context *);
int (*get_mac_address) (struct qlcnic_adapter *, u8 *);
int (*setup_intr) (struct qlcnic_adapter *, u8);
int (*setup_intr) (struct qlcnic_adapter *, u8, int);
int (*alloc_mbx_args)(struct qlcnic_cmd_args *,
struct qlcnic_adapter *, u32);
int (*mbx_cmd) (struct qlcnic_adapter *, struct qlcnic_cmd_args *);
@ -1745,9 +1746,10 @@ static inline int qlcnic_get_mac_address(struct qlcnic_adapter *adapter,
return adapter->ahw->hw_ops->get_mac_address(adapter, mac);
}
static inline int qlcnic_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr)
static inline int qlcnic_setup_intr(struct qlcnic_adapter *adapter,
u8 num_intr, int txq)
{
return adapter->ahw->hw_ops->setup_intr(adapter, num_intr);
return adapter->ahw->hw_ops->setup_intr(adapter, num_intr, txq);
}
static inline int qlcnic_alloc_mbx_args(struct qlcnic_cmd_args *mbx,

2
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
View file

@ -261,7 +261,7 @@ int qlcnic_83xx_wrt_reg_indirect(struct qlcnic_adapter *adapter, ulong addr,
}
}
int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr)
int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr, int txq)
{
int err, i, num_msix;
struct qlcnic_hardware_context *ahw = adapter->ahw;

2
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
View file

@ -523,7 +523,7 @@ enum qlc_83xx_ext_regs {
/* 83xx funcitons */
int qlcnic_83xx_get_fw_version(struct qlcnic_adapter *);
int qlcnic_83xx_issue_cmd(struct qlcnic_adapter *, struct qlcnic_cmd_args *);
int qlcnic_83xx_setup_intr(struct qlcnic_adapter *, u8);
int qlcnic_83xx_setup_intr(struct qlcnic_adapter *, u8, int);
void qlcnic_83xx_get_func_no(struct qlcnic_adapter *);
int qlcnic_83xx_cam_lock(struct qlcnic_adapter *);
void qlcnic_83xx_cam_unlock(struct qlcnic_adapter *);

2
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
View file

@ -2201,7 +2201,7 @@ int qlcnic_83xx_init(struct qlcnic_adapter *adapter, int pci_using_dac)
if (err)
goto detach_mbx;
err = qlcnic_setup_intr(adapter, 0);
err = qlcnic_setup_intr(adapter, 0, 0);
if (err) {
dev_err(&adapter->pdev->dev, "Failed to setup interrupt\n");
goto disable_intr;

57
drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
View file

@ -125,6 +125,14 @@ static const char qlcnic_83xx_mac_stats_strings[][ETH_GSTRING_LEN] = {
};
#define QLCNIC_STATS_LEN ARRAY_SIZE(qlcnic_gstrings_stats)
static const char qlcnic_tx_ring_stats_strings[][ETH_GSTRING_LEN] = {
"xmit_on",
"xmit_off",
"xmit_called",
"xmit_finished",
};
static const char qlcnic_83xx_rx_stats_strings[][ETH_GSTRING_LEN] = {
"ctx_rx_bytes",
"ctx_rx_pkts",
@ -630,15 +638,15 @@ qlcnic_set_ringparam(struct net_device *dev,
static void qlcnic_get_channels(struct net_device *dev,
struct ethtool_channels *channel)
{
int min;
struct qlcnic_adapter *adapter = netdev_priv(dev);
int min;
min = min_t(int, adapter->ahw->max_rx_ques, num_online_cpus());
channel->max_rx = rounddown_pow_of_two(min);
channel->max_tx = adapter->ahw->max_tx_ques;
channel->max_tx = min_t(int, QLCNIC_MAX_TX_RINGS, num_online_cpus());
channel->rx_count = adapter->max_sds_rings;
channel->tx_count = adapter->ahw->max_tx_ques;
channel->tx_count = adapter->max_drv_tx_rings;
}
static int qlcnic_set_channels(struct net_device *dev,
@ -646,18 +654,27 @@ static int qlcnic_set_channels(struct net_device *dev,
{
struct qlcnic_adapter *adapter = netdev_priv(dev);
int err;
int txq = 0;
if (channel->other_count || channel->combined_count ||
channel->tx_count != channel->max_tx)
if (channel->other_count || channel->combined_count)
return -EINVAL;
if (channel->rx_count) {
err = qlcnic_validate_max_rss(adapter, channel->rx_count);
if (err)
return err;
}
err = qlcnic_set_max_rss(adapter, channel->rx_count, 0);
netdev_info(dev, "allocated 0x%x sds rings\n",
adapter->max_sds_rings);
if (channel->tx_count) {
err = qlcnic_validate_max_tx_rings(adapter, channel->tx_count);
if (err)
return err;
txq = channel->tx_count;
}
err = qlcnic_set_max_rss(adapter, channel->rx_count, txq);
netdev_info(dev, "allocated 0x%x sds rings and 0x%x tx rings\n",
adapter->max_sds_rings, adapter->max_drv_tx_rings);
return err;
}
@ -893,6 +910,7 @@ free_diag_res:
clear_diag_irq:
adapter->max_sds_rings = max_sds_rings;
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return ret;
}
@ -1077,11 +1095,21 @@ qlcnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
QLCNIC_TEST_LEN * ETH_GSTRING_LEN);
break;
case ETH_SS_STATS:
num_stats = ARRAY_SIZE(qlcnic_tx_ring_stats_strings);
for (i = 0; i < adapter->max_drv_tx_rings; i++) {
for (index = 0; index < num_stats; index++) {
sprintf(data, "tx_ring_%d %s", i,
qlcnic_tx_ring_stats_strings[index]);
data += ETH_GSTRING_LEN;
}
}
for (index = 0; index < QLCNIC_STATS_LEN; index++) {
memcpy(data + index * ETH_GSTRING_LEN,
qlcnic_gstrings_stats[index].stat_string,
ETH_GSTRING_LEN);
}
if (qlcnic_83xx_check(adapter)) {
num_stats = ARRAY_SIZE(qlcnic_83xx_tx_stats_strings);
for (i = 0; i < num_stats; i++, index++)
@ -1173,11 +1201,22 @@ static void qlcnic_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct qlcnic_adapter *adapter = netdev_priv(dev);
struct qlcnic_host_tx_ring *tx_ring;
struct qlcnic_esw_statistics port_stats;
struct qlcnic_mac_statistics mac_stats;
int index, ret, length, size;
int index, ret, length, size, ring;
char *p;
memset(data, 0, adapter->max_drv_tx_rings * 4 * sizeof(u64));
for (ring = 0, index = 0; ring < adapter->max_drv_tx_rings; ring++) {
if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
tx_ring = &adapter->tx_ring[ring];
*data++ = tx_ring->xmit_on;
*data++ = tx_ring->xmit_off;
*data++ = tx_ring->xmit_called;
*data++ = tx_ring->xmit_finished;
}
}
memset(data, 0, stats->n_stats * sizeof(u64));
length = QLCNIC_STATS_LEN;
for (index = 0; index < length; index++) {

3
drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h
View file

@ -150,7 +150,6 @@ struct ethtool_stats;
struct pci_device_id;
struct qlcnic_host_sds_ring;
struct qlcnic_host_tx_ring;
struct qlcnic_host_tx_ring;
struct qlcnic_hardware_context;
struct qlcnic_adapter;
@ -174,7 +173,7 @@ int qlcnic_82xx_set_lb_mode(struct qlcnic_adapter *, u8);
void qlcnic_82xx_write_crb(struct qlcnic_adapter *, char *, loff_t, size_t);
void qlcnic_82xx_read_crb(struct qlcnic_adapter *, char *, loff_t, size_t);
void qlcnic_82xx_dev_request_reset(struct qlcnic_adapter *, u32);
int qlcnic_82xx_setup_intr(struct qlcnic_adapter *, u8);
int qlcnic_82xx_setup_intr(struct qlcnic_adapter *, u8, int);
irqreturn_t qlcnic_82xx_clear_legacy_intr(struct qlcnic_adapter *);
int qlcnic_82xx_issue_cmd(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *);

90
drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
View file

@ -656,7 +656,7 @@ static int qlcnic_enable_msi_legacy(struct qlcnic_adapter *adapter)
return err;
}
int qlcnic_82xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr)
int qlcnic_82xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr, int txq)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
int num_msix, err = 0;
@ -667,8 +667,11 @@ int qlcnic_82xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr)
if (ahw->msix_supported) {
num_msix = rounddown_pow_of_two(min_t(int, num_online_cpus(),
num_intr));
if (qlcnic_check_multi_tx(adapter))
if (qlcnic_check_multi_tx(adapter)) {
if (txq)
adapter->max_drv_tx_rings = txq;
num_msix += adapter->max_drv_tx_rings;
}
} else {
num_msix = 1;
}
@ -1990,11 +1993,9 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev,
netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->irq = adapter->msix_entries[0].vector;
if (qlcnic_82xx_check(adapter) && qlcnic_check_multi_tx(adapter)) {
err = qlcnic_set_real_num_queues(adapter, netdev);
if (err)
return err;
}
err = register_netdev(netdev);
if (err) {
@ -2253,7 +2254,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
"Device does not support MSI interrupts\n");
if (qlcnic_82xx_check(adapter)) {
err = qlcnic_setup_intr(adapter, 0);
err = qlcnic_setup_intr(adapter, 0, 0);
if (err) {
dev_err(&pdev->dev, "Failed to setup interrupt\n");
goto err_out_disable_msi;
@ -3371,7 +3372,7 @@ static int qlcnic_attach_func(struct pci_dev *pdev)
qlcnic_clr_drv_state(adapter);
kfree(adapter->msix_entries);
adapter->msix_entries = NULL;
err = qlcnic_setup_intr(adapter, 0);
err = qlcnic_setup_intr(adapter, 0, 0);
if (err) {
kfree(adapter->msix_entries);
@ -3496,6 +3497,49 @@ qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
return err;
}
int qlcnic_validate_max_tx_rings(struct qlcnic_adapter *adapter, int txq)
{
struct net_device *netdev = adapter->netdev;
u8 max_hw = QLCNIC_MAX_TX_RINGS;
u32 max_allowed;
if (!qlcnic_82xx_check(adapter)) {
netdev_err(netdev, "No Multi TX-Q support\n");
return -EINVAL;
}
if (!qlcnic_use_msi_x && !qlcnic_use_msi) {
netdev_err(netdev, "No Multi TX-Q support in INT-x mode\n");
return -EINVAL;
}
if (!qlcnic_check_multi_tx(adapter)) {
netdev_err(netdev, "No Multi TX-Q support\n");
return -EINVAL;
}
if (txq > QLCNIC_MAX_TX_RINGS) {
netdev_err(netdev, "Invalid ring count\n");
return -EINVAL;
}
max_allowed = rounddown_pow_of_two(min_t(int, max_hw,
num_online_cpus()));
if ((txq > max_allowed) || !is_power_of_2(txq)) {
if (!is_power_of_2(txq))
netdev_err(netdev,
"TX queue should be a power of 2\n");
if (txq > num_online_cpus())
netdev_err(netdev,
"Tx queue should not be higher than [%u], number of online CPUs in the system\n",
num_online_cpus());
netdev_err(netdev, "Unable to configure %u Tx rings\n", txq);
return -EINVAL;
}
return 0;
}
int qlcnic_validate_max_rss(struct qlcnic_adapter *adapter,
__u32 val)
{
@ -3503,6 +3547,12 @@ int qlcnic_validate_max_rss(struct qlcnic_adapter *adapter,
u8 max_hw = adapter->ahw->max_rx_ques;
u32 max_allowed;
if (qlcnic_82xx_check(adapter) && !qlcnic_use_msi_x &&
!qlcnic_use_msi) {
netdev_err(netdev, "No RSS support in INT-x mode\n");
return -EINVAL;
}
if (val > QLCNIC_MAX_SDS_RINGS) {
netdev_err(netdev, "RSS value should not be higher than %u\n",
QLCNIC_MAX_SDS_RINGS);
@ -3535,27 +3585,48 @@ int qlcnic_validate_max_rss(struct qlcnic_adapter *adapter,
return 0;
}
int qlcnic_set_max_rss(struct qlcnic_adapter *adapter, u8 data, size_t len)
int qlcnic_set_max_rss(struct qlcnic_adapter *adapter, u8 data, int txq)
{
int err;
struct net_device *netdev = adapter->netdev;
int num_msix;
if (test_bit(__QLCNIC_RESETTING, &adapter->state))
return -EBUSY;
if (qlcnic_82xx_check(adapter) && !qlcnic_use_msi_x &&
!qlcnic_use_msi) {
netdev_err(netdev, "No RSS support in INT-x mode\n");
return -EINVAL;
}
netif_device_detach(netdev);
if (netif_running(netdev))
__qlcnic_down(adapter, netdev);
qlcnic_detach(adapter);
if (qlcnic_82xx_check(adapter)) {
if (txq != 0)
adapter->max_drv_tx_rings = txq;
if (qlcnic_check_multi_tx(adapter) &&
(txq > adapter->max_drv_tx_rings))
num_msix = adapter->max_drv_tx_rings;
else
num_msix = data;
}
if (qlcnic_83xx_check(adapter)) {
qlcnic_83xx_free_mbx_intr(adapter);
qlcnic_83xx_enable_mbx_poll(adapter);
}
netif_set_real_num_tx_queues(netdev, adapter->max_drv_tx_rings);
qlcnic_teardown_intr(adapter);
err = qlcnic_setup_intr(adapter, data);
err = qlcnic_setup_intr(adapter, data, txq);
if (err) {
kfree(adapter->msix_entries);
netdev_err(netdev, "failed to setup interrupt\n");
@ -3583,8 +3654,7 @@ int qlcnic_set_max_rss(struct qlcnic_adapter *adapter, u8 data, size_t len)
goto done;
qlcnic_restore_indev_addr(netdev, NETDEV_UP);
}
err = len;
done:
done:
netif_device_attach(netdev);
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return err;

2
drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
View file

@ -512,7 +512,7 @@ static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
dev_warn(&adapter->pdev->dev,
"Device does not support MSI interrupts\n");
err = qlcnic_setup_intr(adapter, 1);
err = qlcnic_setup_intr(adapter, 1, 0);
if (err) {
dev_err(&adapter->pdev->dev, "Failed to setup interrupt\n");
goto err_out_disable_msi;