Author: hselasky
Date: Thu Aug 2 08:30:44 2018
New Revision: 337093
URL: https://svnweb.freebsd.org/changeset/base/337093
Log:
MFC r336388:
Add support for RoCEv2 multicast in ibcore.
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
Sponsored by: Mellanox Technologies
Modified:
stable/11/sys/ofed/drivers/infiniband/core/ib_verbs.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/ofed/drivers/infiniband/core/ib_verbs.c
==============================================================================
--- stable/11/sys/ofed/drivers/infiniband/core/ib_verbs.c Thu Aug 2
08:29:40 2018 (r337092)
+++ stable/11/sys/ofed/drivers/infiniband/core/ib_verbs.c Thu Aug 2
08:30:44 2018 (r337093)
@@ -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,
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