From a145df23ef32c7b933875f334ba28791ee75766e Mon Sep 17 00:00:00 2001
From: Govindarajulu Varadarajan <_govind@gmx.com>
Date: Mon, 23 Jun 2014 16:08:02 +0530
Subject: [PATCH] enic: Add Accelerated RFS support

This patch adds supports for Accelerated Receive Flow Steering.

When the desired rx is different from current rq, for a flow, kernel calls the
driver function enic_rx_flow_steer(). enic_rx_flow_steer adds a IP-TCP/UDP
hardware filter.

Driver registers a timer function enic_flow_may_expire. This function is called
every HZ/4 seconds. In this function we check if the added filter has expired
by calling rps_may_expire_flow(). If the flow has expired, it removes the hw
filter.

As of now adaptor supports only IPv4 - TCP/UDP filters.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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