[generic:] preliminary 3.12 support

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>



git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38528 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 36 insertions, 0 deletions

diff --git a/target/linux/generic/patches-3.12/613-netfilter_optional_tcp_window_check.patch b/target/linux/generic/patches-3.12/613-netfilter_optional_tcp_window_check.patch
new file mode 100644
index 0000000000..1d3b37cc10
--- /dev/null
+++ b/target/linux/generic/patches-3.12/613-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,
++	},
+ 	{ }
+ };
+