From: Yi Zou <yi.zou@intel.com>
Date: Fri, 6 Nov 2009 12:56:00 +0000 (+0000)
Subject: ixgbe: Fix checking TFCS register for TXOFF status when DCB is enabled
X-Git-Tag: v2.6.32-rc7~58^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26f23d82dd8eae6dcc2ab99c04a9256089576a73;p=pandora-kernel.git

ixgbe: Fix checking TFCS register for TXOFF status when DCB is enabled

When DCB is enabled, the ixgbe_check_tx_hang() should check the corresponding
TC's TXOFF in TFCS based on the TC that the tx ring belongs to. Adds a
function to map from the tx_ring hw reg_idx to the correspodning TC and read
TFCS accordingly.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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