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| author | Moni Shoua <monis@mellanox.com> | 2016-11-10 11:30:56 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-11-16 20:04:48 -0500 |
| commit | 850d8fd765079d223d47de89f1f03ab95d1036cb (patch) | |
| tree | e27fdfc27ddc792284e47f01c504a4c49e94f7c9 /include/rdma | |
| parent | af4295c117b82a521b05d0daf39ce879d26e6cb1 (diff) | |
| download | linux-850d8fd765079d223d47de89f1f03ab95d1036cb.tar.gz linux-850d8fd765079d223d47de89f1f03ab95d1036cb.tar.xz | |
IB/mlx4: Handle IPv4 header when demultiplexing MAD
When MAD arrives to the hypervisor, we need to identify which slave it
should be sent by destination GID. When L3 protocol is IPv4 the
GRH is replaced by an IPv4 header. This patch detects when IPv4 header
needs to be parsed instead of GRH.
Fixes: b6ffaeffaea4 ('mlx4: In RoCE allow guests to have multiple GIDS')
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 5ad43a487745..467a4b476e29 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2581,6 +2581,24 @@ void ib_dealloc_pd(struct ib_pd *pd); struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); /** + * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header + * work completion. + * @hdr: the L3 header to parse + * @net_type: type of header to parse + * @sgid: place to store source gid + * @dgid: place to store destination gid + */ +int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, + enum rdma_network_type net_type, + union ib_gid *sgid, union ib_gid *dgid); + +/** + * ib_get_rdma_header_version - Get the header version + * @hdr: the L3 header to parse + */ +int ib_get_rdma_header_version(const union rdma_network_hdr *hdr); + +/** * ib_init_ah_from_wc - Initializes address handle attributes from a * work completion. * @device: Device on which the received message arrived. @@ -3357,4 +3375,5 @@ int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, void ib_drain_rq(struct ib_qp *qp); void ib_drain_sq(struct ib_qp *qp); void ib_drain_qp(struct ib_qp *qp); + #endif /* IB_VERBS_H */ |