ipvlan: Cache net in ipvlan_process_v4_outbound and ipvlan_process_v6_outbound

Compute net once in ipvlan_process_v4_outbound and
ipvlan_process_v6_outbound and store it in a variable so that net does
not need to be recomputed next time it is used.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index 75dcf36c0366..976f30b291f6 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -344,6 +344,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
 {
         const struct iphdr *ip4h = ip_hdr(skb);
         struct net_device *dev = skb->dev;
+        struct net *net = dev_net(dev);
         struct rtable *rt;
         int err, ret = NET_XMIT_DROP;
         struct flowi4 fl4 = {
@@ -354,7 +355,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
                 .saddr = ip4h->saddr,
         };
 
-        rt = ip_route_output_flow(dev_net(dev), &fl4, NULL);
+        rt = ip_route_output_flow(net, &fl4, NULL);
         if (IS_ERR(rt))
                 goto err;
 
@@ -381,6 +382,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
 {
         const struct ipv6hdr *ip6h = ipv6_hdr(skb);
         struct net_device *dev = skb->dev;
+        struct net *net = dev_net(dev);
         struct dst_entry *dst;
         int err, ret = NET_XMIT_DROP;
         struct flowi6 fl6 = {
@@ -393,7 +395,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
                 .flowi6_proto = ip6h->nexthdr,
         };
 
-        dst = ip6_route_output(dev_net(dev), NULL, &fl6);
+        dst = ip6_route_output(net, NULL, &fl6);
         if (dst->error) {
                 ret = dst->error;
                 dst_release(dst);