X-Git-Url: http://git.agner.ch/gitweb/?a=blobdiff_plain;f=net%2Fsched%2Fact_nat.c;h=570949417f388735e93bf887294326a8f24aa534;hb=c01ec7b1ea61b1c7febfe09d7751a4d916194aaf;hp=d885ba311564d9a766fce6eac37edbaf0ed82b71;hpb=a9de18eb761f7c1c860964b2e5addc1a35c7e861;p=linux-drm-fsl-dcu.git

diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index d885ba311564..570949417f38 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -159,6 +159,9 @@ static int tcf_nat(struct sk_buff *skb, struct tc_action *a,
 			iph->daddr = new_addr;
 
 		csum_replace4(&iph->check, addr, new_addr);
+	} else if ((iph->frag_off & htons(IP_OFFSET)) ||
+		   iph->protocol != IPPROTO_ICMP) {
+		goto out;
 	}
 
 	ihl = iph->ihl * 4;
@@ -247,6 +250,7 @@ static int tcf_nat(struct sk_buff *skb, struct tc_action *a,
 		break;
 	}
 
+out:
 	return action;
 
 drop: