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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2009-12-29 20:02:55 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2010-02-11 12:06:37 +0100 |
| commit | 56817d1c0cc30bcd65c56c2f73634b256603cc4d (patch) | |
| tree | 4c37a3d1416f0d17658f37502fc5a9b15f68c65e /src/netlink.c | |
| parent | 73da80df0c3cf4175662b3da4dfbd3574d34f96a (diff) | |
| download | conntrack-tools-56817d1c0cc30bcd65c56c2f73634b256603cc4d.tar.gz conntrack-tools-56817d1c0cc30bcd65c56c2f73634b256603cc4d.zip | |
conntrackd: add support for TCP window scale factor synchronization
This patch adds a new option TCPWindowTracking that allows not
to disable TCP window tracking as it occurs by default.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/netlink.c')
| -rw-r--r-- | src/netlink.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/netlink.c b/src/netlink.c index a43f782..5b6452a 100644 --- a/src/netlink.c +++ b/src/netlink.c @@ -196,12 +196,12 @@ int nl_create_conntrack(struct nfct_handle *h, nfct_setobjopt(ct, NFCT_SOPT_SETUP_REPLY); - /* - * TCP flags to overpass window tracking for recovered connections - */ + /* disable TCP window tracking for recovered connections if required */ if (nfct_attr_is_set(ct, ATTR_TCP_STATE)) { - uint8_t flags = IP_CT_TCP_FLAG_BE_LIBERAL | - IP_CT_TCP_FLAG_SACK_PERM; + uint8_t flags = IP_CT_TCP_FLAG_SACK_PERM; + + if (!CONFIG(sync).tcp_window_tracking) + flags |= IP_CT_TCP_FLAG_BE_LIBERAL; /* FIXME: workaround, we should send TCP flags in updates */ if (nfct_get_attr_u8(ct, ATTR_TCP_STATE) >= @@ -261,12 +261,12 @@ int nl_update_conntrack(struct nfct_handle *h, nfct_attr_unset(ct, ATTR_MASTER_PORT_DST); } - /* - * TCP flags to overpass window tracking for recovered connections - */ + /* disable TCP window tracking for recovered connections if required */ if (nfct_attr_is_set(ct, ATTR_TCP_STATE)) { - uint8_t flags = IP_CT_TCP_FLAG_BE_LIBERAL | - IP_CT_TCP_FLAG_SACK_PERM; + uint8_t flags = IP_CT_TCP_FLAG_SACK_PERM; + + if (!CONFIG(sync).tcp_window_tracking) + flags |= IP_CT_TCP_FLAG_BE_LIBERAL; /* FIXME: workaround, we should send TCP flags in updates */ if (nfct_get_attr_u8(ct, ATTR_TCP_STATE) >= |