diff options
| author | Florian Westphal <fw@strlen.de> | 2017-08-28 18:00:12 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-08-28 19:14:30 +0300 |
| commit | 1aff64715edb8565e99337b842d814d636641b50 (patch) | |
| tree | 8f80e1393cecea031f7c6da6c41ed0c747309910 | |
| parent | d11dd6cdc3883f3c74f841f4d40dfe57c0b9756c (diff) | |
| download | linux-1aff64715edb8565e99337b842d814d636641b50.tar.xz | |
netfilter: rt: account for tcp header size too
This needs to accout for the ipv4/ipv6 header size and the tcp
header without options.
Fixes: 6b5dc98e8fac0 ("netfilter: rt: add support to fetch path mss")
Reported-by: Matteo Croce <technoboy85@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| -rw-r--r-- | net/netfilter/nft_rt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c index 61fd3acaa3c9..a6b7d05aeacf 100644 --- a/net/netfilter/nft_rt.c +++ b/net/netfilter/nft_rt.c @@ -35,10 +35,11 @@ static u16 get_tcpmss(const struct nft_pktinfo *pkt, const struct dst_entry *skb switch (nft_pf(pkt)) { case NFPROTO_IPV4: fl.u.ip4.daddr = ip_hdr(skb)->saddr; - minlen = sizeof(struct iphdr); + minlen = sizeof(struct iphdr) + sizeof(struct tcphdr); break; case NFPROTO_IPV6: fl.u.ip6.daddr = ipv6_hdr(skb)->saddr; + minlen = sizeof(struct ipv6hdr) + sizeof(struct tcphdr); break; } |