From 0fb96701376874c9f1f80322f89a5bf4457c709f Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Tue, 11 Sep 2007 11:27:01 +0200 Subject: [PATCH] [NETFILTER]: nf_conntrack_ipv4: fix "Frag of proto ..." messages Since we're now using a generic tuple decoding function in ICMP connection tracking, ipv4_get_l4proto() might get called with a fragmented packet from within an ICMP error. Remove the error message we used to print when this happens. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index d9b5177989c..53cb1772f38 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -87,14 +87,10 @@ static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff, if (iph == NULL) return -NF_DROP; - /* Never happen */ - if (iph->frag_off & htons(IP_OFFSET)) { - if (net_ratelimit()) { - printk(KERN_ERR "ipv4_get_l4proto: Frag of proto %u\n", - iph->protocol); - } + /* Conntrack defragments packets, we might still see fragments + * inside ICMP packets though. */ + if (iph->frag_off & htons(IP_OFFSET)) return -NF_DROP; - } *dataoff = nhoff + (iph->ihl << 2); *protonum = iph->protocol; -- 2.41.0