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author | Parav Pandit <parav@mellanox.com> | 2018-03-21 17:16:35 +0200 |
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committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-03-23 10:58:05 -0600 |
commit | 114cc9c4b18232452f7dcc8bb3e5749f8d9a6837 (patch) | |
tree | 51d182911abb1814a0ba2644affef379ec30ed27 /drivers/infiniband/core/cma.c | |
parent | 98f1f4e0ed26c97a697f1e007416acbc18f4a8a9 (diff) | |
download | op-kernel-dev-114cc9c4b18232452f7dcc8bb3e5749f8d9a6837.zip op-kernel-dev-114cc9c4b18232452f7dcc8bb3e5749f8d9a6837.tar.gz |
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 'drivers/infiniband/core/cma.c')
-rw-r--r-- | drivers/infiniband/core/cma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 34fa050..8512f63 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2506,6 +2506,7 @@ cma_iboe_set_path_rec_l2_fields(struct rdma_id_private *id_priv) gid_type = ib_network_to_gid_type(addr->dev_addr.network); route->path_rec->rec_type = sa_conv_gid_to_pathrec_type(gid_type); + route->path_rec->roce.route_resolved = true; sa_path_set_ndev(route->path_rec, addr->dev_addr.net); sa_path_set_ifindex(route->path_rec, ndev->ifindex); sa_path_set_dmac(route->path_rec, addr->dev_addr.dst_dev_addr); |