ar71xx: fix unaligned access hacks for tcp timestamps

This missing bit of the hack saves hugely on instruction traps
on tcp connections to ar71xx based routers.

Patch-by: Dave Taht <dave.taht@bufferbloat.net>
Patchwork: http://patchwork.openwrt.org/patch/4905/
[juhosg: adjust subject, refresh kernel patch]
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39626 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch b/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch
index a0b5824..20f5f1c 100644 (file)
--- a/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch
+++ b/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch
@@ -900,8 +900,9 @@
 -              tp->rx_opt.rcv_tsval = ntohl(*ptr);
 +              tp->rx_opt.rcv_tsval = get_unaligned_be32(ptr);
                ++ptr;
-               if (*ptr)
+-              if (*ptr)
 -                      tp->rx_opt.rcv_tsecr = ntohl(*ptr) - tp->tsoffset;
++              if (net_hdr_word(ptr))
 +                      tp->rx_opt.rcv_tsecr = get_unaligned_be32(ptr) -
 +                                             tp->tsoffset;
                else