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ar71xx: fix unaligned access hacks for tcp timestamps

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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>

SVN-Revision: 39626
This commit is contained in:
Gabor Juhos 2014-02-18 17:34:17 +00:00
parent d6cb5215a9
commit 6b8eb55ddb
1 changed files with 2 additions and 1 deletions
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3
target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch
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@ -900,8 +900,9 @@
- tp->rx_opt.rcv_tsval = ntohl(*ptr); - tp->rx_opt.rcv_tsval = ntohl(*ptr);
+ tp->rx_opt.rcv_tsval = get_unaligned_be32(ptr); + tp->rx_opt.rcv_tsval = get_unaligned_be32(ptr);
++ptr; ++ptr;
if (*ptr) - if (*ptr)
- tp->rx_opt.rcv_tsecr = ntohl(*ptr) - tp->tsoffset; - tp->rx_opt.rcv_tsecr = ntohl(*ptr) - tp->tsoffset;
+ if (net_hdr_word(ptr))
+ tp->rx_opt.rcv_tsecr = get_unaligned_be32(ptr) - + tp->rx_opt.rcv_tsecr = get_unaligned_be32(ptr) -
+ tp->tsoffset; + tp->tsoffset;
else else