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authorJason Gunthorpe <jgg@mellanox.com>2018-06-13 10:22:05 +0300
committerJason Gunthorpe <jgg@mellanox.com>2018-06-18 11:11:26 -0600
commitd97099fe53ed9ab8b17d084bed0099feb08a48c1 (patch)
tree8a0775903a601c8c9b4ad3e1b43601ea7568e127 /include/rdma/ib_verbs.h
parent947c99ecfcb49ddf7ade5e5fa4c33cf77d6d33f3 (diff)
IB{cm, core}: Introduce and use ah_attr copy, move, replace APIs
Introduce AH attribute copy, move and replace APIs to be used by core and provider drivers. In CM code flow when ah attribute might be re-initialized twice while processing incoming request, or initialized once while from path record while sending out CM requests. Therefore use rdma_move_ah_attr API to handle such scenarios instead of memcpy(). Provider drivers keeps a copy ah_attr during the lifetime of the ah. Therefore, use rdma_replace_ah_attr() which conditionally release reference to old ah_attr and holds reference to new attribute whose referrence is released when the AH is freed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r--include/rdma/ib_verbs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index a3a4b8335668..1e5c1e8ba282 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4034,6 +4034,11 @@ void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr);
void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid,
u32 flow_label, u8 hop_limit, u8 traffic_class,
const struct ib_gid_attr *sgid_attr);
+void rdma_copy_ah_attr(struct rdma_ah_attr *dest,
+ const struct rdma_ah_attr *src);
+void rdma_replace_ah_attr(struct rdma_ah_attr *old,
+ const struct rdma_ah_attr *new);
+void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src);
/**
* rdma_ah_find_type - Return address handle type.