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authorParav Pandit <parav@mellanox.com>2018-03-21 17:16:35 +0200
committerJason Gunthorpe <jgg@mellanox.com>2018-03-23 10:58:05 -0600
commit114cc9c4b18232452f7dcc8bb3e5749f8d9a6837 (patch)
tree51d182911abb1814a0ba2644affef379ec30ed27 /include/rdma
parent98f1f4e0ed26c97a697f1e007416acbc18f4a8a9 (diff)
downloadlinux-114cc9c4b18232452f7dcc8bb3e5749f8d9a6837.tar.bz2
IB/cma: Resolve route only while receiving CM requests
Currently CM request for RoCE follows following flow. rdma_create_id() rdma_resolve_addr() rdma_resolve_route() For RC QPs: rdma_connect() ->cma_connect_ib() ->ib_send_cm_req() ->cm_init_av_by_path() ->ib_init_ah_attr_from_path() For UD QPs: rdma_connect() ->cma_resolve_ib_udp() ->ib_send_cm_sidr_req() ->cm_init_av_by_path() ->ib_init_ah_attr_from_path() In both the flows, route is already resolved before sending CM requests. Therefore, code is refactored to avoid resolving route second time in ib_cm layer. ib_init_ah_attr_from_path() is extended to resolve route when it is not yet resolved for RoCE link layer. This is achieved by caller setting route_resolved field in path record whenever it has route already resolved. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_sa.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h
index 82b8e59af14a..bacb144f7780 100644
--- a/include/rdma/ib_sa.h
+++ b/include/rdma/ib_sa.h
@@ -163,7 +163,15 @@ struct sa_path_rec_ib {
u8 raw_traffic;
};
+/**
+ * struct sa_path_rec_roce - RoCE specific portion of the path record entry
+ * @route_resolved: When set, it indicates that this route is already
+ * resolved for this path record entry.
+ * @dmac: Destination mac address for the given DGID entry
+ * of the path record entry.
+ */
struct sa_path_rec_roce {
+ bool route_resolved;
u8 dmac[ETH_ALEN];
/* ignored in IB */
int ifindex;