diff options
| -rw-r--r-- | drivers/infiniband/core/cma.c | 27 | ||||
| -rw-r--r-- | include/rdma/rdma_cm.h | 19 |
2 files changed, 46 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 30d1c32a816f..66590a4c612d 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2036,6 +2036,33 @@ __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr) } EXPORT_SYMBOL(rdma_get_service_id); +void rdma_read_gids(struct rdma_cm_id *cm_id, union ib_gid *sgid, + union ib_gid *dgid) +{ + struct rdma_addr *addr = &cm_id->route.addr; + + if (!cm_id->device) { + if (sgid) + memset(sgid, 0, sizeof(*sgid)); + if (dgid) + memset(dgid, 0, sizeof(*dgid)); + return; + } + + if (rdma_protocol_roce(cm_id->device, cm_id->port_num)) { + if (sgid) + rdma_ip2gid((struct sockaddr *)&addr->src_addr, sgid); + if (dgid) + rdma_ip2gid((struct sockaddr *)&addr->dst_addr, dgid); + } else { + if (sgid) + rdma_addr_get_sgid(&addr->dev_addr, sgid); + if (dgid) + rdma_addr_get_dgid(&addr->dev_addr, dgid); + } +} +EXPORT_SYMBOL(rdma_read_gids); + static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) { struct rdma_id_private *id_priv = iw_id->context; diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h index 3d2eed3c4e75..6538a5cc27b6 100644 --- a/include/rdma/rdma_cm.h +++ b/include/rdma/rdma_cm.h @@ -413,4 +413,23 @@ bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason); const void *rdma_consumer_reject_data(struct rdma_cm_id *id, struct rdma_cm_event *ev, u8 *data_len); +/** + * rdma_read_gids - Return the SGID and DGID used for establishing + * connection. This can be used after rdma_resolve_addr() + * on client side. This can be use on new connection + * on server side. This is applicable to IB, RoCE, iWarp. + * If cm_id is not bound yet to the RDMA device, it doesn't + * copy and SGID or DGID to the given pointers. + * @id: Communication identifier whose GIDs are queried. + * @sgid: Pointer to SGID where SGID will be returned. It is optional. + * @dgid: Pointer to DGID where DGID will be returned. It is optional. + * Note: This API should not be used by any new ULPs or new code. + * Instead, users interested in querying GIDs should refer to path record + * of the rdma_cm_id to query the GIDs. + * This API is provided for compatibility for existing users. + */ + +void rdma_read_gids(struct rdma_cm_id *cm_id, union ib_gid *sgid, + union ib_gid *dgid); + #endif /* RDMA_CM_H */ |