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Add support for RoCEv2 multicast in ibcore.

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When creating address handle from multicast GID, set MAC according to
the appropriate formula instead of searching for it in the GID table:
- For IPv4 multicast GID use ip_eth_mc_map().
- For IPv6 multicast GID use ipv6_eth_mc_map().

Linux commit:
9636a56fa864464896bf7d1272c701f2b9a57737

MFC after:		1 week
Sponsored by:		Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2018-07-17 09:36:04 +00:00
parent e3e6820f69
commit c68cb3a60a
1 changed files with 13 additions and 0 deletions
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13
sys/ofed/drivers/infiniband/core/ib_verbs.c
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@ -1172,6 +1172,19 @@ int ib_resolve_eth_dmac(struct ib_device *device,
if (!rdma_cap_eth_ah(device, ah_attr->port_num))
return 0;
if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) {
if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) {
__be32 addr = 0;
memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4);
ip_eth_mc_map(addr, (char *)ah_attr->dmac);
} else {
ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw,
(char *)ah_attr->dmac);
}
return 0;
}
ret = ib_query_gid(device,
ah_attr->port_num,
ah_attr->grh.sgid_index,