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authorJonas Gorski <jogo@openwrt.org>2011-08-09 12:19:43 +0000
committerJonas Gorski <jogo@openwrt.org>2011-08-09 12:19:43 +0000
commitcf2070bd5b394d5c3fcfae577bd623a6e8a7f0c4 (patch)
treef0d9e62c746434dde7a45ed0debd3eb94b92dc65 /target/linux/generic/patches-3.1/613-netfilter_optional_tcp_window_check.patch
parenta5f2fd63598414246a497e08a4433a0116f2f606 (diff)
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linux: generic: add support for 3.1-rc1
SVN-Revision: 27940
Diffstat (limited to 'target/linux/generic/patches-3.1/613-netfilter_optional_tcp_window_check.patch')
-rw-r--r--target/linux/generic/patches-3.1/613-netfilter_optional_tcp_window_check.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.1/613-netfilter_optional_tcp_window_check.patch b/target/linux/generic/patches-3.1/613-netfilter_optional_tcp_window_check.patch
new file mode 100644
index 0000000000..1c259d4f0c
--- /dev/null
+++ b/target/linux/generic/patches-3.1/613-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. */
+@@ -524,6 +527,9 @@ 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.
+ */
+@@ -1321,6 +1327,13 @@ static struct ctl_table tcp_sysctl_table
+ .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,
++ },
++ {
+ .procname = "nf_conntrack_tcp_be_liberal",
+ .data = &nf_ct_tcp_be_liberal,
+ .maxlen = sizeof(unsigned int),