ipv4: Make output route lookup return rtable directly.
Instead of on the stack.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 7927589..fa9988d 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -440,7 +440,8 @@
/*unsigned long now; */
struct net *net = dev_net(dev);
- if (ip_route_output_key(net, &rt, &fl) < 0)
+ rt = ip_route_output_key(net, &fl);
+ if (IS_ERR(rt))
return 1;
if (rt->dst.dev != dev) {
NET_INC_STATS_BH(net, LINUX_MIB_ARPFILTER);
@@ -1063,10 +1064,10 @@
if (dev == NULL) {
struct flowi fl = { .fl4_dst = ip,
.fl4_tos = RTO_ONLINK };
- struct rtable *rt;
- err = ip_route_output_key(net, &rt, &fl);
- if (err != 0)
- return err;
+ struct rtable *rt = ip_route_output_key(net, &fl);
+
+ if (IS_ERR(rt))
+ return PTR_ERR(rt);
dev = rt->dst.dev;
ip_rt_put(rt);
if (!dev)
@@ -1177,7 +1178,6 @@
static int arp_req_delete(struct net *net, struct arpreq *r,
struct net_device *dev)
{
- int err;
__be32 ip;
if (r->arp_flags & ATF_PUBL)
@@ -1187,10 +1187,9 @@
if (dev == NULL) {
struct flowi fl = { .fl4_dst = ip,
.fl4_tos = RTO_ONLINK };
- struct rtable *rt;
- err = ip_route_output_key(net, &rt, &fl);
- if (err != 0)
- return err;
+ struct rtable *rt = ip_route_output_key(net, &fl);
+ if (IS_ERR(rt))
+ return PTR_ERR(rt);
dev = rt->dst.dev;
ip_rt_put(rt);
if (!dev)