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| author |   Gao Feng <fgao@ikuai8.com> | 2016-07-23 19:21:47 +0800 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2016-08-12 00:41:08 +0200 |
| commit | e5e693ab49a95e1994979972eea224eefa81eba9 (patch) | |
| tree | cf3ea62e374b6fcbeba3aa4cc089b61b3f57718d /net/netfilter/nf_conntrack_proto_dccp.c | |
| parent | net: ethernet: renesas: sh_eth: use new api ethtool_{get|set}_link_ksettings (diff) | |
| download | linux-dev-e5e693ab49a95e1994979972eea224eefa81eba9.tar.xz linux-dev-e5e693ab49a95e1994979972eea224eefa81eba9.zip | |
netfilter: conntrack: Only need first 4 bytes to get l4proto ports
We only need first 4 bytes instead of 8 bytes to get the ports of
tcp/udp/dccp/sctp/udplite in their pkt_to_tuple function.
Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nf_conntrack_proto_dccp.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_dccp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c index 399a38fd685a..a45bee52dccc 100644 --- a/net/netfilter/nf_conntrack_proto_dccp.c +++ b/net/netfilter/nf_conntrack_proto_dccp.c @@ -402,7 +402,8 @@ static bool dccp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, { struct dccp_hdr _hdr, *dh; - dh = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr); + /* Actually only need first 4 bytes to get ports. */ + dh = skb_header_pointer(skb, dataoff, 4, &_hdr); if (dh == NULL) return false; |