diff options
| author | Gao Feng <fgao@ikuai8.com> | 2017-04-19 09:23:42 +0800 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-04-19 17:55:17 +0200 |
| commit | 122868b378094853b376f3e2ac833bcee078eb3c (patch) | |
| tree | 2a67950d7a07a8ff563f500af413d017c0e9c470 /net/netfilter/nf_conntrack_proto_tcp.c | |
| parent | be7be6e161a218e92c4e46b97ba59c1e40cfea9c (diff) | |
netfilter: tcp: Use TCP_MAX_WSCALE instead of literal 14
The window scale may be enlarged from 14 to 15 according to the itef
draft https://tools.ietf.org/html/draft-nishida-tcpm-maxwin-03.
Use the macro TCP_MAX_WSCALE to support it easily with TCP stack in
the future.
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_tcp.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_tcp.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index d0c0a31dfe74..d61a68759dea 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -419,10 +419,9 @@ static void tcp_options(const struct sk_buff *skb, && opsize == TCPOLEN_WINDOW) { state->td_scale = *(u_int8_t *)ptr; - if (state->td_scale > 14) { - /* See RFC1323 */ - state->td_scale = 14; - } + if (state->td_scale > TCP_MAX_WSCALE) + state->td_scale = TCP_MAX_WSCALE; + state->flags |= IP_CT_TCP_FLAG_WINDOW_SCALE; } |