Author: hselasky
Date: Tue Jul 17 09:27:31 2018
New Revision: 336382
URL: https://svnweb.freebsd.org/changeset/base/336382
Log:
Depend on IPv6 stack to resolve link local address for RoCEv2 in ibcore.
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
Modified:
head/sys/ofed/drivers/infiniband/core/ib_verbs.c
Modified: head/sys/ofed/drivers/infiniband/core/ib_verbs.c
==============================================================================
--- head/sys/ofed/drivers/infiniband/core/ib_verbs.c Tue Jul 17 09:26:09
2018 (r336381)
+++ head/sys/ofed/drivers/infiniband/core/ib_verbs.c Tue Jul 17 09:27:31
2018 (r336382)
@@ -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);
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