RDMA/cxgb4: Allow loopback connections

find_route() must treat loopback as a valid egress interface.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index d286bdebe2ab..360807eaffec 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -400,7 +400,8 @@ static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip,
         n = dst_neigh_lookup(&rt->dst, &peer_ip);
         if (!n)
                 return NULL;
-        if (!our_interface(dev, n->dev)) {
+        if (!our_interface(dev, n->dev) &&
+            !(n->dev->flags & IFF_LOOPBACK)) {
                 dst_release(&rt->dst);
                 return NULL;
         }