From: Steve Wise <swise@opengridcomputing.com>
Date: Wed, 19 Mar 2014 12:14:39 +0000 (+0530)
Subject: RDMA/cxgb4: Allow loopback connections
X-Git-Tag: v3.15-rc1~103^2^2~14
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=f8e819081f797df355cffbdedb9301ea50ae76b2;p=linux.git

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 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;
 	}