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IB/cma: Join and leave multicast groups with IGMP

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Since RoCEv2 is a protocol over IP header it is required to send IGMP
join and leave requests to the network when joining and leaving
multicast groups.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Moni Shoua
2015-12-23 14:56:57 +02:00
committed by Doug Ledford
parent 25f40220e5
commit bee3c3c918
3 changed files with 106 additions and 9 deletions
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17
drivers/infiniband/core/multicast.c
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@@ -723,14 +723,27 @@ EXPORT_SYMBOL(ib_sa_get_mcmember_rec);
int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
struct ib_sa_mcmember_rec *rec,
struct net_device *ndev,
enum ib_gid_type gid_type,
struct ib_ah_attr *ah_attr)
{
int ret;
u16 gid_index;
u8 p;
ret = ib_find_cached_gid(device, &rec->port_gid, IB_GID_TYPE_IB,
NULL, &p, &gid_index);
if (rdma_protocol_roce(device, port_num)) {
ret = ib_find_cached_gid_by_port(device, &rec->port_gid,
gid_type, port_num,
ndev,
&gid_index);
} else if (rdma_protocol_ib(device, port_num)) {
ret = ib_find_cached_gid(device, &rec->port_gid,
IB_GID_TYPE_IB, NULL, &p,
&gid_index);
} else {
ret = -EINVAL;
}
if (ret)
return ret;