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authorImre Kaloz <kaloz@openwrt.org>2014-03-07 11:27:00 +0000
committerImre Kaloz <kaloz@openwrt.org>2014-03-07 11:27:00 +0000
commit2b43bb49dec4546cdca7e627b06e7682ae742591 (patch)
tree0d58c3ccdefbe53983cda5399612b4727f0ee81d /target/linux/generic/patches-3.14/613-netfilter_optional_tcp_window_check.patch
parent3be7023c9be4e1381699ce393638ad63565c9ac5 (diff)
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add preliminary 3.14 support
Signed-off-by: Imre Kaloz <kaloz@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39789 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-3.14/613-netfilter_optional_tcp_window_check.patch')
-rw-r--r--target/linux/generic/patches-3.14/613-netfilter_optional_tcp_window_check.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.14/613-netfilter_optional_tcp_window_check.patch b/target/linux/generic/patches-3.14/613-netfilter_optional_tcp_window_check.patch
new file mode 100644
index 0000000000..1d3b37cc10
--- /dev/null
+++ b/target/linux/generic/patches-3.14/613-netfilter_optional_tcp_window_check.patch
@@ -0,0 +1,36 @@
+--- a/net/netfilter/nf_conntrack_proto_tcp.c
++++ b/net/netfilter/nf_conntrack_proto_tcp.c
+@@ -33,6 +33,9 @@
+ #include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
+ #include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
+
++/* Do not check the TCP window for incoming packets */
++static int nf_ct_tcp_no_window_check __read_mostly = 1;
++
+ /* "Be conservative in what you do,
+ be liberal in what you accept from others."
+ If it's non-zero, we mark only out of window RST segments as INVALID. */
+@@ -515,6 +518,9 @@ static bool tcp_in_window(const struct n
+ s32 receiver_offset;
+ bool res, in_recv_win;
+
++ if (nf_ct_tcp_no_window_check)
++ return true;
++
+ /*
+ * Get the required data from the packet.
+ */
+@@ -1452,6 +1458,13 @@ static struct ctl_table tcp_sysctl_table
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
++ {
++ .procname = "nf_conntrack_tcp_no_window_check",
++ .data = &nf_ct_tcp_no_window_check,
++ .maxlen = sizeof(unsigned int),
++ .mode = 0644,
++ .proc_handler = proc_dointvec,
++ },
+ { }
+ };
+