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d3957b86a4
linux/include/rdma/ib_sa.h
Majd Dibbiny d3957b86a4 RDMA/SA: Fix kernel panic in CMA request handler flow 
Commit 9fdca4da4d (IB/SA: Split struct sa_path_rec based on IB and
ROCE specific fields) moved the service_id to be specific attribute
for IB and OPA SA Path Record, and thus wasn't assigned for RoCE.

This caused to the following kernel panic in the CMA request handler flow:

[   27.074594] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
[   27.074731] IP: __radix_tree_lookup+0x1d/0xe0
...
[   27.075356] Workqueue: ib_cm cm_work_handler [ib_cm]
[   27.075401] task: ffff88022e3b8000 task.stack: ffffc90001298000
[   27.075449] RIP: 0010:__radix_tree_lookup+0x1d/0xe0
...
[   27.075979] Call Trace:
[   27.076015]  radix_tree_lookup+0xd/0x10
[   27.076055]  cma_ps_find+0x59/0x70 [rdma_cm]
[   27.076097]  cma_id_from_event+0xd2/0x470 [rdma_cm]
[   27.076144]  ? ib_init_ah_from_path+0x39a/0x590 [ib_core]
[   27.076193]  cma_req_handler+0x25/0x480 [rdma_cm]
[   27.076237]  cm_process_work+0x25/0x120 [ib_cm]
[   27.076280]  ? cm_get_bth_pkey.isra.62+0x3c/0xa0 [ib_cm]
[   27.076350]  cm_req_handler+0xb03/0xd40 [ib_cm]
[   27.076430]  ? sched_clock_cpu+0x11/0xb0
[   27.076478]  cm_work_handler+0x194/0x1588 [ib_cm]
[   27.076525]  process_one_work+0x160/0x410
[   27.076565]  worker_thread+0x137/0x4a0
[   27.076614]  kthread+0x112/0x150
[   27.076684]  ? max_active_store+0x60/0x60
[   27.077642]  ? kthread_park+0x90/0x90
[   27.078530]  ret_from_fork+0x2c/0x40

This patch moves it back to the common SA Path Record structure
and removes the redundant setter and getter.

Tested on Connect-IB and Connect-X4 in Infiniband and RoCE respectively.

Fixes: 9fdca4da4d (IB/SA: Split struct sa_path_rec based on IB ands
	ROCE specific fields)
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-06-01 17:20:14 -04:00

699 lines
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/*
* 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 <linux/netdevice.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_addr.h>
#include <rdma/opa_addr.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
};
#define OPA_SA_CLASS_VERSION 0x80
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
};
/*
* There are 4 types of join states:
* FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
* The order corresponds to JoinState bits in MCMemberRecord.
*/
enum ib_sa_mc_join_states {
FULLMEMBER_JOIN,
NONMEMBER_JOIN,
SENDONLY_NONMEBER_JOIN,
SENDONLY_FULLMEMBER_JOIN,
NUM_JOIN_MEMBERSHIP_TYPES,
};
#define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT BIT(12)
/*
* 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)
enum sa_path_rec_type {
SA_PATH_REC_TYPE_IB,
SA_PATH_REC_TYPE_ROCE_V1,
SA_PATH_REC_TYPE_ROCE_V2,
SA_PATH_REC_TYPE_OPA
};
struct sa_path_rec_ib {
__be16 dlid;
__be16 slid;
u8 raw_traffic;
};
struct sa_path_rec_roce {
u8 dmac[ETH_ALEN];
/* ignored in IB */
int ifindex;
/* ignored in IB */
struct net *net;
};
struct sa_path_rec_opa {
__be32 dlid;
__be32 slid;
u8 raw_traffic;
u8 l2_8B;
u8 l2_10B;
u8 l2_9B;
u8 l2_16B;
u8 qos_type;
u8 qos_priority;
};
struct sa_path_rec {
union ib_gid dgid;
union ib_gid sgid;
__be64 service_id;
/* reserved */
__be32 flow_label;
u8 hop_limit;
u8 traffic_class;
u8 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;
union {
struct sa_path_rec_ib ib;
struct sa_path_rec_roce roce;
struct sa_path_rec_opa opa;
};
enum sa_path_rec_type rec_type;
};
static inline enum ib_gid_type
sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
{
switch (rec->rec_type) {
case SA_PATH_REC_TYPE_ROCE_V1:
return IB_GID_TYPE_ROCE;
case SA_PATH_REC_TYPE_ROCE_V2:
return IB_GID_TYPE_ROCE_UDP_ENCAP;
default:
return IB_GID_TYPE_IB;
}
}
static inline enum sa_path_rec_type
sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
{
switch (type) {
case IB_GID_TYPE_ROCE:
return SA_PATH_REC_TYPE_ROCE_V1;
case IB_GID_TYPE_ROCE_UDP_ENCAP:
return SA_PATH_REC_TYPE_ROCE_V2;
default:
return SA_PATH_REC_TYPE_IB;
}
}
static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
struct sa_path_rec *opa)
{
if ((be32_to_cpu(opa->opa.dlid) >=
be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
(be32_to_cpu(opa->opa.slid) >=
be16_to_cpu(IB_MULTICAST_LID_BASE))) {
/* Create OPA GID and zero out the LID */
ib->dgid.global.interface_id
= OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
ib->dgid.global.subnet_prefix
= opa->dgid.global.subnet_prefix;
ib->sgid.global.interface_id
= OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
ib->dgid.global.subnet_prefix
= opa->dgid.global.subnet_prefix;
ib->ib.dlid = 0;
ib->ib.slid = 0;
} else {
ib->ib.dlid = htons(ntohl(opa->opa.dlid));
ib->ib.slid = htons(ntohl(opa->opa.slid));
}
ib->service_id = opa->service_id;
ib->ib.raw_traffic = opa->opa.raw_traffic;
}
static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
struct sa_path_rec *ib)
{
__be32 slid, dlid;
if ((ib_is_opa_gid(&ib->sgid)) ||
(ib_is_opa_gid(&ib->dgid))) {
slid = htonl(opa_get_lid_from_gid(&ib->sgid));
dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
} else {
slid = htonl(ntohs(ib->ib.slid));
dlid = htonl(ntohs(ib->ib.dlid));
}
opa->opa.slid = slid;
opa->opa.dlid = dlid;
opa->service_id = ib->service_id;
opa->opa.raw_traffic = ib->ib.raw_traffic;
}
/* Convert from OPA to IB path record */
static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
struct sa_path_rec *src)
{
if (src->rec_type != SA_PATH_REC_TYPE_OPA)
return;
*dest = *src;
dest->rec_type = SA_PATH_REC_TYPE_IB;
path_conv_opa_to_ib(dest, src);
}
/* Convert from IB to OPA path record */
static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
struct sa_path_rec *src)
{
if (src->rec_type != SA_PATH_REC_TYPE_IB)
return;
/* Do a structure copy and overwrite the relevant fields */
*dest = *src;
dest->rec_type = SA_PATH_REC_TYPE_OPA;
path_conv_ib_to_opa(dest, src);
}
#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;
u8 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 sa_path_rec *rec,
ib_sa_comp_mask comp_mask,
int timeout_ms, gfp_t gfp_mask,
void (*callback)(int status,
struct 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 net_device *ndev,
enum ib_gid_type gid_type,
struct rdma_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 sa_path_rec *rec,
struct rdma_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 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 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);
bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
struct ib_device *device,
u8 port_num);
static inline bool sa_path_is_roce(struct sa_path_rec *rec)
{
return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
(rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
}
static inline void sa_path_set_slid(struct sa_path_rec *rec, __be32 slid)
{
if (rec->rec_type == SA_PATH_REC_TYPE_IB)
rec->ib.slid = htons(ntohl(slid));
else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
rec->opa.slid = slid;
}
static inline void sa_path_set_dlid(struct sa_path_rec *rec, __be32 dlid)
{
if (rec->rec_type == SA_PATH_REC_TYPE_IB)
rec->ib.dlid = htons(ntohl(dlid));
else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
rec->opa.dlid = dlid;
}
static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
u8 raw_traffic)
{
if (rec->rec_type == SA_PATH_REC_TYPE_IB)
rec->ib.raw_traffic = raw_traffic;
else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
rec->opa.raw_traffic = raw_traffic;
}
static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
{
if (rec->rec_type == SA_PATH_REC_TYPE_IB)
return htonl(ntohs(rec->ib.slid));
else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
return rec->opa.slid;
return 0;
}
static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
{
if (rec->rec_type == SA_PATH_REC_TYPE_IB)
return htonl(ntohs(rec->ib.dlid));
else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
return rec->opa.dlid;
return 0;
}
static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
{
if (rec->rec_type == SA_PATH_REC_TYPE_IB)
return rec->ib.raw_traffic;
else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
return rec->opa.raw_traffic;
return 0;
}
static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
{
if (sa_path_is_roce(rec))
memcpy(rec->roce.dmac, dmac, ETH_ALEN);
}
static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
{
if (sa_path_is_roce(rec))
eth_zero_addr(rec->roce.dmac);
}
static inline void sa_path_set_ifindex(struct sa_path_rec *rec, int ifindex)
{
if (sa_path_is_roce(rec))
rec->roce.ifindex = ifindex;
}
static inline void sa_path_set_ndev(struct sa_path_rec *rec, struct net *net)
{
if (sa_path_is_roce(rec))
rec->roce.net = net;
}
static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
{
if (sa_path_is_roce(rec))
return rec->roce.dmac;
return NULL;
}
static inline int sa_path_get_ifindex(struct sa_path_rec *rec)
{
if (sa_path_is_roce(rec))
return rec->roce.ifindex;
return 0;
}
static inline struct net *sa_path_get_ndev(struct sa_path_rec *rec)
{
if (sa_path_is_roce(rec))
return rec->roce.net;
return NULL;
}
static inline struct net_device *ib_get_ndev_from_path(struct sa_path_rec *rec)
{
return sa_path_get_ndev(rec) ?
dev_get_by_index(sa_path_get_ndev(rec),
sa_path_get_ifindex(rec))
: NULL;
}
#endif /* IB_SA_H */
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