diff options
| author |   Noa Osherovich <noaos@mellanox.com> | 2017-06-12 11:14:03 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-07-24 10:40:23 -0400 |
| commit | be1d325a335840a86c133a56c6a911c368bac0fd (patch) | |
| tree | 99f54a1d65b2ae6726e8f76f47d281dab31e5bbf /drivers/infiniband/core/cma.c | |
| parent | IB/core: Fix the validations of a multicast LID in attach or detach operations (diff) | |
| download | linux-dev-be1d325a335840a86c133a56c6a911c368bac0fd.tar.xz linux-dev-be1d325a335840a86c133a56c6a911c368bac0fd.zip | |
IB/core: Set RoCEv2 MGID according to spec
RoCEv2 Annex states that for RoCEv2 over IPv4, the corresponding
IPv4 address is encoded into the GID according to the following rule:
GID= :ffff:<IPv4 address>
Remove the 0xff0e prefix for RoCEv2 packets with IPv4 and leave it
zeroed and change rdma_is_multicast_addr() to consider the new logic.
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/cma.c')
| -rw-r--r-- | drivers/infiniband/core/cma.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 0eb393237ba2..a8c2f0ccd225 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -3998,7 +3998,8 @@ static void iboe_mcast_work_handler(struct work_struct *work) kfree(mw); } -static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) +static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid, + enum ib_gid_type gid_type) { struct sockaddr_in *sin = (struct sockaddr_in *)addr; struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; @@ -4008,8 +4009,8 @@ static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) } else if (addr->sa_family == AF_INET6) { memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); } else { - mgid->raw[0] = 0xff; - mgid->raw[1] = 0x0e; + mgid->raw[0] = (gid_type == IB_GID_TYPE_IB) ? 0xff : 0; + mgid->raw[1] = (gid_type == IB_GID_TYPE_IB) ? 0x0e : 0; mgid->raw[2] = 0; mgid->raw[3] = 0; mgid->raw[4] = 0; @@ -4050,7 +4051,9 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, goto out1; } - cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); + gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num - + rdma_start_port(id_priv->cma_dev->device)]; + cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid, gid_type); mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); if (id_priv->id.ps == RDMA_PS_UDP) @@ -4066,8 +4069,6 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, mc->multicast.ib->rec.hop_limit = 1; mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); - gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num - - rdma_start_port(id_priv->cma_dev->device)]; if (addr->sa_family == AF_INET) { if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { mc->multicast.ib->rec.hop_limit = IPV6_DEFAULT_HOPLIMIT; |