diff options
| author | Moni Shoua <monis@mellanox.com> | 2016-11-10 12:30:56 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-11-17 04:04:48 +0300 |
| commit | 850d8fd765079d223d47de89f1f03ab95d1036cb (patch) | |
| tree | e27fdfc27ddc792284e47f01c504a4c49e94f7c9 /drivers/infiniband/core/verbs.c | |
| parent | af4295c117b82a521b05d0daf39ce879d26e6cb1 (diff) | |
| download | 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 'drivers/infiniband/core/verbs.c')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index b7f9f3d95975..98e10c5f2a96 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -328,7 +328,7 @@ struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) } EXPORT_SYMBOL(ib_create_ah); -static int ib_get_header_version(const union rdma_network_hdr *hdr) +int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) { const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; struct iphdr ip4h_checked; @@ -359,6 +359,7 @@ static int ib_get_header_version(const union rdma_network_hdr *hdr) return 4; return 6; } +EXPORT_SYMBOL(ib_get_rdma_header_version); static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, u8 port_num, @@ -369,7 +370,7 @@ static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, if (rdma_protocol_ib(device, port_num)) return RDMA_NETWORK_IB; - grh_version = ib_get_header_version((union rdma_network_hdr *)grh); + grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); if (grh_version == 4) return RDMA_NETWORK_IPV4; @@ -415,9 +416,9 @@ static int get_sgid_index_from_eth(struct ib_device *device, u8 port_num, &context, gid_index); } -static int get_gids_from_rdma_hdr(union rdma_network_hdr *hdr, - enum rdma_network_type net_type, - union ib_gid *sgid, union ib_gid *dgid) +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) { struct sockaddr_in src_in; struct sockaddr_in dst_in; @@ -447,6 +448,7 @@ static int get_gids_from_rdma_hdr(union rdma_network_hdr *hdr, return -EINVAL; } } +EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, const struct ib_wc *wc, const struct ib_grh *grh, @@ -469,8 +471,8 @@ int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, net_type = ib_get_net_type_by_grh(device, port_num, grh); gid_type = ib_network_to_gid_type(net_type); } - ret = get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, - &sgid, &dgid); + ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, + &sgid, &dgid); if (ret) return ret; |