packet: Fix build with INET disabled.

af_packet.c:(.text+0x3d130): undefined reference to `ip_defrag'
or
ERROR: "ip_defrag" [net/packet/af_packet.ko] undefined!

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index aa4c73afa19a..d2294ad1a895 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -456,6 +456,7 @@ static struct sock *fanout_demux_cpu(struct packet_fanout *f, struct sk_buff *sk
 
 static struct sk_buff *fanout_check_defrag(struct sk_buff *skb)
 {
+#ifdef CONFIG_INET
         const struct iphdr *iph;
         u32 len;
 
@@ -486,6 +487,7 @@ static struct sk_buff *fanout_check_defrag(struct sk_buff *skb)
                         skb->rxhash = 0;
                 }
         }
+#endif
         return skb;
 }