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authorflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2013-01-08 22:19:31 +0000
committerflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2013-01-08 22:19:31 +0000
commitcb5bddeee233e4d33857b5dd46cf2bc906e7fd19 (patch)
treeeca211bce457b867f3e5fd2acded634db17c76cf /target/linux/generic/patches-3.8/613-netfilter_optional_tcp_window_check.patch
parentc06bcf1ccd80e46f0e162047a716c7dc40dd8324 (diff)
kernel: add support for 3.8-rc2
Signed-off-by: Florian Fainelli <florian@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35055 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-3.8/613-netfilter_optional_tcp_window_check.patch')
-rw-r--r--target/linux/generic/patches-3.8/613-netfilter_optional_tcp_window_check.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.8/613-netfilter_optional_tcp_window_check.patch b/target/linux/generic/patches-3.8/613-netfilter_optional_tcp_window_check.patch
new file mode 100644
index 000000000..a828ef425
--- /dev/null
+++ b/target/linux/generic/patches-3.8/613-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
+@@ -29,6 +29,9 @@
+ #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. */
+@@ -526,6 +529,9 @@ static bool tcp_in_window(const struct n
+ s16 receiver_offset;
+ bool res;
+
++ if (nf_ct_tcp_no_window_check)
++ return true;
++
+ /*
+ * Get the required data from the packet.
+ */
+@@ -1438,6 +1444,13 @@ 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,
++ },
+ { }
+ };
+