From aafcea0542d73fdaf32cbfa3eb3908aebf524717 Mon Sep 17 00:00:00 2001 From: nbd Date: Sat, 30 Jul 2011 15:39:52 +0000 Subject: kernel: add a new version of my netfilter speedup patches for linux 2.6.39 and 3.0 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27840 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../613-netfilter_optional_tcp_window_check.patch | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 target/linux/generic/patches-2.6.39/613-netfilter_optional_tcp_window_check.patch (limited to 'target/linux/generic/patches-2.6.39/613-netfilter_optional_tcp_window_check.patch') diff --git a/target/linux/generic/patches-2.6.39/613-netfilter_optional_tcp_window_check.patch b/target/linux/generic/patches-2.6.39/613-netfilter_optional_tcp_window_check.patch new file mode 100644 index 000000000..1c259d4f0 --- /dev/null +++ b/target/linux/generic/patches-2.6.39/613-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 + #include + ++/* 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), -- cgit v1.2.3