From: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Date: Thu, 9 Aug 2007 12:14:46 +0000 (+0300)
Subject: [TCP]: Move sack_ok access to obviously named funcs & cleanup
X-Git-Tag: v2.6.24-rc1~1454^2~816
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e60402d0a909ca2e6e2fbdf9ed004ef0fae36d33;p=pandora-kernel.git

[TCP]: Move sack_ok access to obviously named funcs & cleanup

Previously code had IsReno/IsFack defined as macros that were
local to tcp_input.c though sack_ok field has user elsewhere too
for the same purpose. This changes them to static inlines as
preferred according the current coding style and unifies the
access to sack_ok across multiple files. Magic bitops of sack_ok
for FACK and DSACK are also abstracted to functions with
appropriate names.

Note:
- One sack_ok = 1 remains but that's self explanary, i.e., it
  enables sack
- Couple of !IsReno cases are changed to tcp_is_sack
- There were no users for IsDSack => I dropped it

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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