net: rename skb->iif to skb->skb_iif

To help grep games, rename iif to skb_iif

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index c33b6bb..529c9ca 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2602,7 +2602,7 @@
 #ifdef CONFIG_AUDIT
 	smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_NET);
 	ad.a.u.net.family = sk->sk_family;
-	ad.a.u.net.netif = skb->iif;
+	ad.a.u.net.netif = skb->skb_iif;
 	ipv4_skb_to_auditdata(skb, &ad.a, NULL);
 #endif
 	/*
@@ -2757,7 +2757,7 @@
 #ifdef CONFIG_AUDIT
 	smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_NET);
 	ad.a.u.net.family = family;
-	ad.a.u.net.netif = skb->iif;
+	ad.a.u.net.netif = skb->skb_iif;
 	ipv4_skb_to_auditdata(skb, &ad.a, NULL);
 #endif
 	/*