From: David S. Miller <davem@davemloft.net>
Date: Wed, 21 Apr 2010 08:57:01 +0000 (-0700)
Subject: tcp: Fix ipv6 checksumming on response packets for real.
X-Git-Tag: v2.6.35-rc1~473^2~429
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f71b70e115dd0bb34eee4d281a4fb6416e88cfff;p=pandora-kernel.git

tcp: Fix ipv6 checksumming on response packets for real.

Commit 6651ffc8e8bdd5fb4b7d1867c6cfebb4f309512c
("ipv6: Fix tcp_v6_send_response transport header setting.")
fixed one half of why ipv6 tcp response checksums were
invalid, but it's not the whole story.

If we're going to use CHECKSUM_PARTIAL for these things (which we are
since commit 2e8e18ef52e7dd1af0a3bd1f7d990a1d0b249586 "tcp: Set
CHECKSUM_UNNECESSARY in tcp_init_nondata_skb"), we can't be setting
buff->csum as we always have been here in tcp_v6_send_response.  We
need to leave it at zero.

Kill that line and checksums are good again.

Signed-off-by: David S. Miller <davem@davemloft.net>
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