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| author | David S. Miller <davem@davemloft.net> | 2010-08-02 15:07:58 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-08-02 15:07:58 -0700 |
| commit | 83bf2e4089bebc2c7fd14a79de5954b26fe8d4af (patch) | |
| tree | ab2cb1f229ba4c2d7236406c997e41a223daf74d /net/netfilter/nf_conntrack_proto_tcp.c | |
| parent | de38483010bae523f533bb6bf9f7b7353772f6eb (diff) | |
| parent | 6661481d5a8975657742c7ed40ae16bdaa7d0a6e (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
Diffstat (limited to 'net/netfilter/nf_conntrack_proto_tcp.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_tcp.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 802dbffae8b4..c4c885dca3bd 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -585,8 +585,16 @@ static bool tcp_in_window(const struct nf_conn *ct, * Let's try to use the data from the packet. */ sender->td_end = end; + win <<= sender->td_scale; sender->td_maxwin = (win == 0 ? 1 : win); sender->td_maxend = end + sender->td_maxwin; + /* + * We haven't seen traffic in the other direction yet + * but we have to tweak window tracking to pass III + * and IV until that happens. + */ + if (receiver->td_maxwin == 0) + receiver->td_end = receiver->td_maxend = sack; } } else if (((state->state == TCP_CONNTRACK_SYN_SENT && dir == IP_CT_DIR_ORIGINAL) @@ -680,7 +688,7 @@ static bool tcp_in_window(const struct nf_conn *ct, /* * Update receiver data. */ - if (after(end, sender->td_maxend)) + if (receiver->td_maxwin != 0 && after(end, sender->td_maxend)) receiver->td_maxwin += end - sender->td_maxend; if (after(sack + win, receiver->td_maxend - 1)) { receiver->td_maxend = sack + win; |