 dd5f03beb4
			
		
	
	
	dd5f03beb4
	
	
	
		
			
			This patch add the support for Ethernet L2 attributes in the verbs/cm/cma structures. When dealing with L2 Ethernet, we should use smac, dmac, vlan ID and priority in a similar manner that the IB L2 (and the L4 PKEY) attributes are used. Thus, those attributes were added to the following structures: * ib_ah_attr - added dmac * ib_qp_attr - added smac and vlan_id, (sl remains vlan priority) * ib_wc - added smac, vlan_id * ib_sa_path_rec - added smac, dmac, vlan_id * cm_av - added smac and vlan_id For the path record structure, extra care was taken to avoid the new fields when packing it into wire format, so we don't break the IB CM and SA wire protocol. On the active side, the CM fills. its internal structures from the path provided by the ULP. We add there taking the ETH L2 attributes and placing them into the CM Address Handle (struct cm_av). On the passive side, the CM fills its internal structures from the WC associated with the REQ message. We add there taking the ETH L2 attributes from the WC. When the HW driver provides the required ETH L2 attributes in the WC, they set the IB_WC_WITH_SMAC and IB_WC_WITH_VLAN flags. The IB core code checks for the presence of these flags, and in their absence does address resolution from the ib_init_ah_from_wc() helper function. ib_modify_qp_is_ok is also updated to consider the link layer. Some parameters are mandatory for Ethernet link layer, while they are irrelevant for IB. Vendor drivers are modified to support the new function signature. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
		
			
				
	
	
		
			431 lines
		
	
	
	
		
			16 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			431 lines
		
	
	
	
		
			16 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
 | |
|  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
 | |
|  * Copyright (c) 2005 Voltaire, Inc.  All rights reserved.
 | |
|  * Copyright (c) 2006 Intel Corporation.  All rights reserved.
 | |
|  *
 | |
|  * This software is available to you under a choice of one of two
 | |
|  * licenses.  You may choose to be licensed under the terms of the GNU
 | |
|  * General Public License (GPL) Version 2, available from the file
 | |
|  * COPYING in the main directory of this source tree, or the
 | |
|  * OpenIB.org BSD license below:
 | |
|  *
 | |
|  *     Redistribution and use in source and binary forms, with or
 | |
|  *     without modification, are permitted provided that the following
 | |
|  *     conditions are met:
 | |
|  *
 | |
|  *      - Redistributions of source code must retain the above
 | |
|  *        copyright notice, this list of conditions and the following
 | |
|  *        disclaimer.
 | |
|  *
 | |
|  *      - Redistributions in binary form must reproduce the above
 | |
|  *        copyright notice, this list of conditions and the following
 | |
|  *        disclaimer in the documentation and/or other materials
 | |
|  *        provided with the distribution.
 | |
|  *
 | |
|  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 | |
|  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 | |
|  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 | |
|  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 | |
|  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 | |
|  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 | |
|  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 | |
|  * SOFTWARE.
 | |
|  */
 | |
| 
 | |
| #ifndef IB_SA_H
 | |
| #define IB_SA_H
 | |
| 
 | |
| #include <linux/completion.h>
 | |
| #include <linux/compiler.h>
 | |
| 
 | |
| #include <linux/atomic.h>
 | |
| 
 | |
| #include <rdma/ib_verbs.h>
 | |
| #include <rdma/ib_mad.h>
 | |
| 
 | |
| enum {
 | |
| 	IB_SA_CLASS_VERSION		= 2,	/* IB spec version 1.1/1.2 */
 | |
| 
 | |
| 	IB_SA_METHOD_GET_TABLE		= 0x12,
 | |
| 	IB_SA_METHOD_GET_TABLE_RESP	= 0x92,
 | |
| 	IB_SA_METHOD_DELETE		= 0x15,
 | |
| 	IB_SA_METHOD_DELETE_RESP	= 0x95,
 | |
| 	IB_SA_METHOD_GET_MULTI		= 0x14,
 | |
| 	IB_SA_METHOD_GET_MULTI_RESP	= 0x94,
 | |
| 	IB_SA_METHOD_GET_TRACE_TBL	= 0x13
 | |
| };
 | |
| 
 | |
| enum {
 | |
| 	IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
 | |
| 	IB_SA_ATTR_NOTICE	     = 0x02,
 | |
| 	IB_SA_ATTR_INFORM_INFO	     = 0x03,
 | |
| 	IB_SA_ATTR_NODE_REC	     = 0x11,
 | |
| 	IB_SA_ATTR_PORT_INFO_REC     = 0x12,
 | |
| 	IB_SA_ATTR_SL2VL_REC	     = 0x13,
 | |
| 	IB_SA_ATTR_SWITCH_REC	     = 0x14,
 | |
| 	IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
 | |
| 	IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
 | |
| 	IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
 | |
| 	IB_SA_ATTR_SM_INFO_REC	     = 0x18,
 | |
| 	IB_SA_ATTR_LINK_REC	     = 0x20,
 | |
| 	IB_SA_ATTR_GUID_INFO_REC     = 0x30,
 | |
| 	IB_SA_ATTR_SERVICE_REC	     = 0x31,
 | |
| 	IB_SA_ATTR_PARTITION_REC     = 0x33,
 | |
| 	IB_SA_ATTR_PATH_REC	     = 0x35,
 | |
| 	IB_SA_ATTR_VL_ARB_REC	     = 0x36,
 | |
| 	IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
 | |
| 	IB_SA_ATTR_TRACE_REC	     = 0x39,
 | |
| 	IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
 | |
| 	IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
 | |
| 	IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
 | |
| };
 | |
| 
 | |
| enum ib_sa_selector {
 | |
| 	IB_SA_GT   = 0,
 | |
| 	IB_SA_LT   = 1,
 | |
| 	IB_SA_EQ   = 2,
 | |
| 	/*
 | |
| 	 * The meaning of "best" depends on the attribute: for
 | |
| 	 * example, for MTU best will return the largest available
 | |
| 	 * MTU, while for packet life time, best will return the
 | |
| 	 * smallest available life time.
 | |
| 	 */
 | |
| 	IB_SA_BEST = 3
 | |
| };
 | |
| 
 | |
| /*
 | |
|  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
 | |
|  * attempt is made to pack structures to match the physical layout of
 | |
|  * SA records in SA MADs; all packing and unpacking is handled by the
 | |
|  * SA query code.
 | |
|  *
 | |
|  * For a record with structure ib_sa_xxx_rec, the naming convention
 | |
|  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
 | |
|  * never use different abbreviations or otherwise change the spelling
 | |
|  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
 | |
|  *
 | |
|  * Reserved rows are indicated with comments to help maintainability.
 | |
|  */
 | |
| 
 | |
| #define IB_SA_PATH_REC_SERVICE_ID		       (IB_SA_COMP_MASK( 0) |\
 | |
| 							IB_SA_COMP_MASK( 1))
 | |
| #define IB_SA_PATH_REC_DGID				IB_SA_COMP_MASK( 2)
 | |
| #define IB_SA_PATH_REC_SGID				IB_SA_COMP_MASK( 3)
 | |
| #define IB_SA_PATH_REC_DLID				IB_SA_COMP_MASK( 4)
 | |
| #define IB_SA_PATH_REC_SLID				IB_SA_COMP_MASK( 5)
 | |
| #define IB_SA_PATH_REC_RAW_TRAFFIC			IB_SA_COMP_MASK( 6)
 | |
| /* reserved:								 7 */
 | |
| #define IB_SA_PATH_REC_FLOW_LABEL       		IB_SA_COMP_MASK( 8)
 | |
| #define IB_SA_PATH_REC_HOP_LIMIT			IB_SA_COMP_MASK( 9)
 | |
| #define IB_SA_PATH_REC_TRAFFIC_CLASS			IB_SA_COMP_MASK(10)
 | |
| #define IB_SA_PATH_REC_REVERSIBLE			IB_SA_COMP_MASK(11)
 | |
| #define IB_SA_PATH_REC_NUMB_PATH			IB_SA_COMP_MASK(12)
 | |
| #define IB_SA_PATH_REC_PKEY				IB_SA_COMP_MASK(13)
 | |
| #define IB_SA_PATH_REC_QOS_CLASS			IB_SA_COMP_MASK(14)
 | |
| #define IB_SA_PATH_REC_SL				IB_SA_COMP_MASK(15)
 | |
| #define IB_SA_PATH_REC_MTU_SELECTOR			IB_SA_COMP_MASK(16)
 | |
| #define IB_SA_PATH_REC_MTU				IB_SA_COMP_MASK(17)
 | |
| #define IB_SA_PATH_REC_RATE_SELECTOR			IB_SA_COMP_MASK(18)
 | |
| #define IB_SA_PATH_REC_RATE				IB_SA_COMP_MASK(19)
 | |
| #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR	IB_SA_COMP_MASK(20)
 | |
| #define IB_SA_PATH_REC_PACKET_LIFE_TIME			IB_SA_COMP_MASK(21)
 | |
| #define IB_SA_PATH_REC_PREFERENCE			IB_SA_COMP_MASK(22)
 | |
| 
 | |
| struct ib_sa_path_rec {
 | |
| 	__be64       service_id;
 | |
| 	union ib_gid dgid;
 | |
| 	union ib_gid sgid;
 | |
| 	__be16       dlid;
 | |
| 	__be16       slid;
 | |
| 	int          raw_traffic;
 | |
| 	/* reserved */
 | |
| 	__be32       flow_label;
 | |
| 	u8           hop_limit;
 | |
| 	u8           traffic_class;
 | |
| 	int          reversible;
 | |
| 	u8           numb_path;
 | |
| 	__be16       pkey;
 | |
| 	__be16       qos_class;
 | |
| 	u8           sl;
 | |
| 	u8           mtu_selector;
 | |
| 	u8           mtu;
 | |
| 	u8           rate_selector;
 | |
| 	u8           rate;
 | |
| 	u8           packet_life_time_selector;
 | |
| 	u8           packet_life_time;
 | |
| 	u8           preference;
 | |
| 	u8           smac[ETH_ALEN];
 | |
| 	u8           dmac[ETH_ALEN];
 | |
| 	u16	     vlan_id;
 | |
| };
 | |
| 
 | |
| #define IB_SA_MCMEMBER_REC_MGID				IB_SA_COMP_MASK( 0)
 | |
| #define IB_SA_MCMEMBER_REC_PORT_GID			IB_SA_COMP_MASK( 1)
 | |
| #define IB_SA_MCMEMBER_REC_QKEY				IB_SA_COMP_MASK( 2)
 | |
| #define IB_SA_MCMEMBER_REC_MLID				IB_SA_COMP_MASK( 3)
 | |
| #define IB_SA_MCMEMBER_REC_MTU_SELECTOR			IB_SA_COMP_MASK( 4)
 | |
| #define IB_SA_MCMEMBER_REC_MTU				IB_SA_COMP_MASK( 5)
 | |
| #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS		IB_SA_COMP_MASK( 6)
 | |
| #define IB_SA_MCMEMBER_REC_PKEY				IB_SA_COMP_MASK( 7)
 | |
| #define IB_SA_MCMEMBER_REC_RATE_SELECTOR		IB_SA_COMP_MASK( 8)
 | |
| #define IB_SA_MCMEMBER_REC_RATE				IB_SA_COMP_MASK( 9)
 | |
| #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR	IB_SA_COMP_MASK(10)
 | |
| #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME		IB_SA_COMP_MASK(11)
 | |
| #define IB_SA_MCMEMBER_REC_SL				IB_SA_COMP_MASK(12)
 | |
| #define IB_SA_MCMEMBER_REC_FLOW_LABEL			IB_SA_COMP_MASK(13)
 | |
| #define IB_SA_MCMEMBER_REC_HOP_LIMIT			IB_SA_COMP_MASK(14)
 | |
| #define IB_SA_MCMEMBER_REC_SCOPE			IB_SA_COMP_MASK(15)
 | |
| #define IB_SA_MCMEMBER_REC_JOIN_STATE			IB_SA_COMP_MASK(16)
 | |
| #define IB_SA_MCMEMBER_REC_PROXY_JOIN			IB_SA_COMP_MASK(17)
 | |
| 
 | |
| struct ib_sa_mcmember_rec {
 | |
| 	union ib_gid mgid;
 | |
| 	union ib_gid port_gid;
 | |
| 	__be32       qkey;
 | |
| 	__be16       mlid;
 | |
| 	u8           mtu_selector;
 | |
| 	u8           mtu;
 | |
| 	u8           traffic_class;
 | |
| 	__be16       pkey;
 | |
| 	u8 	     rate_selector;
 | |
| 	u8 	     rate;
 | |
| 	u8 	     packet_life_time_selector;
 | |
| 	u8 	     packet_life_time;
 | |
| 	u8           sl;
 | |
| 	__be32       flow_label;
 | |
| 	u8           hop_limit;
 | |
| 	u8           scope;
 | |
| 	u8           join_state;
 | |
| 	int          proxy_join;
 | |
| };
 | |
| 
 | |
| /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1	*/
 | |
| #define IB_SA_SERVICE_REC_SERVICE_ID			IB_SA_COMP_MASK( 0)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_GID			IB_SA_COMP_MASK( 1)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_PKEY			IB_SA_COMP_MASK( 2)
 | |
| /* reserved:								 3 */
 | |
| #define IB_SA_SERVICE_REC_SERVICE_LEASE			IB_SA_COMP_MASK( 4)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_KEY			IB_SA_COMP_MASK( 5)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_NAME			IB_SA_COMP_MASK( 6)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_0		IB_SA_COMP_MASK( 7)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_1		IB_SA_COMP_MASK( 8)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_2		IB_SA_COMP_MASK( 9)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_3		IB_SA_COMP_MASK(10)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_4		IB_SA_COMP_MASK(11)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_5		IB_SA_COMP_MASK(12)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_6		IB_SA_COMP_MASK(13)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_7		IB_SA_COMP_MASK(14)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_8		IB_SA_COMP_MASK(15)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_9		IB_SA_COMP_MASK(16)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_10		IB_SA_COMP_MASK(17)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_11		IB_SA_COMP_MASK(18)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_12		IB_SA_COMP_MASK(19)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_13		IB_SA_COMP_MASK(20)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_14		IB_SA_COMP_MASK(21)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA8_15		IB_SA_COMP_MASK(22)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_0		IB_SA_COMP_MASK(23)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_1		IB_SA_COMP_MASK(24)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_2		IB_SA_COMP_MASK(25)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_3		IB_SA_COMP_MASK(26)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_4		IB_SA_COMP_MASK(27)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_5		IB_SA_COMP_MASK(28)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_6		IB_SA_COMP_MASK(29)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA16_7		IB_SA_COMP_MASK(30)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA32_0		IB_SA_COMP_MASK(31)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA32_1		IB_SA_COMP_MASK(32)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA32_2		IB_SA_COMP_MASK(33)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA32_3		IB_SA_COMP_MASK(34)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA64_0		IB_SA_COMP_MASK(35)
 | |
| #define IB_SA_SERVICE_REC_SERVICE_DATA64_1		IB_SA_COMP_MASK(36)
 | |
| 
 | |
| #define IB_DEFAULT_SERVICE_LEASE 	0xFFFFFFFF
 | |
| 
 | |
| struct ib_sa_service_rec {
 | |
| 	u64		id;
 | |
| 	union ib_gid	gid;
 | |
| 	__be16 		pkey;
 | |
| 	/* reserved */
 | |
| 	u32		lease;
 | |
| 	u8		key[16];
 | |
| 	u8		name[64];
 | |
| 	u8		data8[16];
 | |
| 	u16		data16[8];
 | |
| 	u32		data32[4];
 | |
| 	u64		data64[2];
 | |
| };
 | |
| 
 | |
| #define IB_SA_GUIDINFO_REC_LID		IB_SA_COMP_MASK(0)
 | |
| #define IB_SA_GUIDINFO_REC_BLOCK_NUM	IB_SA_COMP_MASK(1)
 | |
| #define IB_SA_GUIDINFO_REC_RES1		IB_SA_COMP_MASK(2)
 | |
| #define IB_SA_GUIDINFO_REC_RES2		IB_SA_COMP_MASK(3)
 | |
| #define IB_SA_GUIDINFO_REC_GID0		IB_SA_COMP_MASK(4)
 | |
| #define IB_SA_GUIDINFO_REC_GID1		IB_SA_COMP_MASK(5)
 | |
| #define IB_SA_GUIDINFO_REC_GID2		IB_SA_COMP_MASK(6)
 | |
| #define IB_SA_GUIDINFO_REC_GID3		IB_SA_COMP_MASK(7)
 | |
| #define IB_SA_GUIDINFO_REC_GID4		IB_SA_COMP_MASK(8)
 | |
| #define IB_SA_GUIDINFO_REC_GID5		IB_SA_COMP_MASK(9)
 | |
| #define IB_SA_GUIDINFO_REC_GID6		IB_SA_COMP_MASK(10)
 | |
| #define IB_SA_GUIDINFO_REC_GID7		IB_SA_COMP_MASK(11)
 | |
| 
 | |
| struct ib_sa_guidinfo_rec {
 | |
| 	__be16	lid;
 | |
| 	u8	block_num;
 | |
| 	/* reserved */
 | |
| 	u8	res1;
 | |
| 	__be32	res2;
 | |
| 	u8	guid_info_list[64];
 | |
| };
 | |
| 
 | |
| struct ib_sa_client {
 | |
| 	atomic_t users;
 | |
| 	struct completion comp;
 | |
| };
 | |
| 
 | |
| /**
 | |
|  * ib_sa_register_client - Register an SA client.
 | |
|  */
 | |
| void ib_sa_register_client(struct ib_sa_client *client);
 | |
| 
 | |
| /**
 | |
|  * ib_sa_unregister_client - Deregister an SA client.
 | |
|  * @client: Client object to deregister.
 | |
|  */
 | |
| void ib_sa_unregister_client(struct ib_sa_client *client);
 | |
| 
 | |
| struct ib_sa_query;
 | |
| 
 | |
| void ib_sa_cancel_query(int id, struct ib_sa_query *query);
 | |
| 
 | |
| int ib_sa_path_rec_get(struct ib_sa_client *client,
 | |
| 		       struct ib_device *device, u8 port_num,
 | |
| 		       struct ib_sa_path_rec *rec,
 | |
| 		       ib_sa_comp_mask comp_mask,
 | |
| 		       int timeout_ms, gfp_t gfp_mask,
 | |
| 		       void (*callback)(int status,
 | |
| 					struct ib_sa_path_rec *resp,
 | |
| 					void *context),
 | |
| 		       void *context,
 | |
| 		       struct ib_sa_query **query);
 | |
| 
 | |
| int ib_sa_service_rec_query(struct ib_sa_client *client,
 | |
| 			 struct ib_device *device, u8 port_num,
 | |
| 			 u8 method,
 | |
| 			 struct ib_sa_service_rec *rec,
 | |
| 			 ib_sa_comp_mask comp_mask,
 | |
| 			 int timeout_ms, gfp_t gfp_mask,
 | |
| 			 void (*callback)(int status,
 | |
| 					  struct ib_sa_service_rec *resp,
 | |
| 					  void *context),
 | |
| 			 void *context,
 | |
| 			 struct ib_sa_query **sa_query);
 | |
| 
 | |
| struct ib_sa_multicast {
 | |
| 	struct ib_sa_mcmember_rec rec;
 | |
| 	ib_sa_comp_mask		comp_mask;
 | |
| 	int			(*callback)(int status,
 | |
| 					    struct ib_sa_multicast *multicast);
 | |
| 	void			*context;
 | |
| };
 | |
| 
 | |
| /**
 | |
|  * ib_sa_join_multicast - Initiates a join request to the specified multicast
 | |
|  *   group.
 | |
|  * @client: SA client
 | |
|  * @device: Device associated with the multicast group.
 | |
|  * @port_num: Port on the specified device to associate with the multicast
 | |
|  *   group.
 | |
|  * @rec: SA multicast member record specifying group attributes.
 | |
|  * @comp_mask: Component mask indicating which group attributes of %rec are
 | |
|  *   valid.
 | |
|  * @gfp_mask: GFP mask for memory allocations.
 | |
|  * @callback: User callback invoked once the join operation completes.
 | |
|  * @context: User specified context stored with the ib_sa_multicast structure.
 | |
|  *
 | |
|  * This call initiates a multicast join request with the SA for the specified
 | |
|  * multicast group.  If the join operation is started successfully, it returns
 | |
|  * an ib_sa_multicast structure that is used to track the multicast operation.
 | |
|  * Users must free this structure by calling ib_free_multicast, even if the
 | |
|  * join operation later fails.  (The callback status is non-zero.)
 | |
|  *
 | |
|  * If the join operation fails; status will be non-zero, with the following
 | |
|  * failures possible:
 | |
|  * -ETIMEDOUT: The request timed out.
 | |
|  * -EIO: An error occurred sending the query.
 | |
|  * -EINVAL: The MCMemberRecord values differed from the existing group's.
 | |
|  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
 | |
|  *   group, and the user must rejoin the group to continue using it.
 | |
|  */
 | |
| struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
 | |
| 					     struct ib_device *device, u8 port_num,
 | |
| 					     struct ib_sa_mcmember_rec *rec,
 | |
| 					     ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
 | |
| 					     int (*callback)(int status,
 | |
| 							     struct ib_sa_multicast
 | |
| 								    *multicast),
 | |
| 					     void *context);
 | |
| 
 | |
| /**
 | |
|  * ib_free_multicast - Frees the multicast tracking structure, and releases
 | |
|  *    any reference on the multicast group.
 | |
|  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
 | |
|  *
 | |
|  * This call blocks until the multicast identifier is destroyed.  It may
 | |
|  * not be called from within the multicast callback; however, returning a non-
 | |
|  * zero value from the callback will result in destroying the multicast
 | |
|  * tracking structure.
 | |
|  */
 | |
| void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
 | |
| 
 | |
| /**
 | |
|  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
 | |
|  *   returns it if found.
 | |
|  * @device: Device associated with the multicast group.
 | |
|  * @port_num: Port on the specified device to associate with the multicast
 | |
|  *   group.
 | |
|  * @mgid: MGID of multicast group.
 | |
|  * @rec: Location to copy SA multicast member record.
 | |
|  */
 | |
| int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
 | |
| 			   union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
 | |
| 
 | |
| /**
 | |
|  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
 | |
|  * an SA multicast member record.
 | |
|  */
 | |
| int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
 | |
| 			     struct ib_sa_mcmember_rec *rec,
 | |
| 			     struct ib_ah_attr *ah_attr);
 | |
| 
 | |
| /**
 | |
|  * ib_init_ah_from_path - Initialize address handle attributes based on an SA
 | |
|  *   path record.
 | |
|  */
 | |
| int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
 | |
| 			 struct ib_sa_path_rec *rec,
 | |
| 			 struct ib_ah_attr *ah_attr);
 | |
| 
 | |
| /**
 | |
|  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
 | |
|  * to IB MAD wire format.
 | |
|  */
 | |
| void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute);
 | |
| 
 | |
| /**
 | |
|  * ib_sa_unpack_path - Convert a path record from MAD format to struct
 | |
|  * ib_sa_path_rec.
 | |
|  */
 | |
| void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec);
 | |
| 
 | |
| /* Support GuidInfoRecord */
 | |
| int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
 | |
| 			      struct ib_device *device, u8 port_num,
 | |
| 			      struct ib_sa_guidinfo_rec *rec,
 | |
| 			      ib_sa_comp_mask comp_mask, u8 method,
 | |
| 			      int timeout_ms, gfp_t gfp_mask,
 | |
| 			      void (*callback)(int status,
 | |
| 					       struct ib_sa_guidinfo_rec *resp,
 | |
| 					       void *context),
 | |
| 			      void *context,
 | |
| 			      struct ib_sa_query **sa_query);
 | |
| 
 | |
| #endif /* IB_SA_H */
 |