From eda183c21a444aef5800cef98d63d62914d2a81a Mon Sep 17 00:00:00 2001
From: Jakub Kicinski <kubakici@wp.pl>
Date: Wed, 2 Apr 2014 10:33:28 +0000
Subject: [PATCH] ixgbe: clean up Rx time stamping code

Time stamping resources are per-interface so there is no need
to keep separate last_rx_timestamp for each Rx ring, move
last_rx_timestamp to the adapter structure.

With last_rx_timestamp inside adapter, ixgbe_ptp_rx_hwtstamp()
inline function is reduced to a single if statement so it is
no longer necessary. If statement is placed directly in
ixgbe_process_skb_fields() fixing likely/unlikely marking.

Checks for q_vector or adapter to be NULL are superfluous.

Comment about taking I/O hit is a leftover from previous design.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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