d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Depend on IPv6 stack to resolve link local address for RoCEv2 in ibcore.

Browse Source 
RoCEv1 does not use the IPv6 stack to resolve the link local DGID since it
uses GID address. It forms the DMAC directly from the DGID.

Linux commit:
56d0a7d9a0f045ee27a001762deac28c7d28e2e4

MFC after:		1 week
Sponsored by:		Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2018-07-17 09:27:31 +00:00
parent df9bb49b66
commit 56326b4755
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=336382
1 changed files with 18 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
sys/ofed/drivers/infiniband/core/ib_verbs.c
View File

@ -1160,7 +1160,10 @@ EXPORT_SYMBOL(ib_modify_qp_is_ok);
int ib_resolve_eth_dmac(struct ib_device *device,
struct ib_ah_attr *ah_attr)
{
int ret = 0;
struct ib_gid_attr sgid_attr;
union ib_gid sgid;
int hop_limit;
int ret;
if (ah_attr->port_num < rdma_start_port(device) ||
ah_attr->port_num > rdma_end_port(device))
@ -1169,35 +1172,22 @@ int ib_resolve_eth_dmac(struct ib_device *device,
if (!rdma_cap_eth_ah(device, ah_attr->port_num))
return 0;
if (rdma_link_local_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) {
rdma_get_ll_mac((struct in6_addr *)ah_attr->grh.dgid.raw,
ah_attr->dmac);
} else {
union ib_gid sgid;
struct ib_gid_attr sgid_attr;
int hop_limit;
ret = ib_query_gid(device,
ah_attr->port_num,
ah_attr->grh.sgid_index,
&sgid, &sgid_attr);
if (ret != 0)
return (ret);
if (!sgid_attr.ndev)
return -ENXIO;
ret = ib_query_gid(device,
ah_attr->port_num,
ah_attr->grh.sgid_index,
&sgid, &sgid_attr);
ret = rdma_addr_find_l2_eth_by_grh(&sgid,
&ah_attr->grh.dgid,
ah_attr->dmac,
sgid_attr.ndev, &hop_limit);
dev_put(sgid_attr.ndev);
if (ret || !sgid_attr.ndev) {
if (!ret)
ret = -ENXIO;
goto out;
}
ret = rdma_addr_find_l2_eth_by_grh(&sgid,
&ah_attr->grh.dgid,
ah_attr->dmac,
sgid_attr.ndev, &hop_limit);
dev_put(sgid_attr.ndev);
ah_attr->grh.hop_limit = hop_limit;
}
out:
ah_attr->grh.hop_limit = hop_limit;
return ret;
}
EXPORT_SYMBOL(ib_resolve_eth_dmac);