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>

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index d286bdebe2ab90fc613c7696d41690909247da52..360807eaffecbff1bcd3a1ef0751bba82f36a8a0 100644 (file)
--- 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;
        }