netdev - [PATCH v2 net-next 7/7] igb: Enable TSO for stacked vlan

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Message-Id: <1427434277-27569-8-git-send-email-makita.toshiaki@lab.ntt.co.jp>
Date:	Fri, 27 Mar 2015 14:31:16 +0900
From:	Toshiaki Makita <makita.toshiaki@....ntt.co.jp>
To:	"David S . Miller" <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	Ariel Elior <ariel.elior@...gic.com>,
	Amir Vadai <amirv@...lanox.com>,
	Shahed Shaikh <shahed.shaikh@...gic.com>,
	Dept-GELinuxNICDev@...gic.com, Jay Vosburgh <j.vosburgh@...il.com>,
	Veaceslav Falico <vfalico@...il.com>,
	Andy Gospodarek <gospo@...ulusnetworks.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Linux NICS <linux.nics@...el.com>
Cc:	Toshiaki Makita <makita.toshiaki@....ntt.co.jp>,
	Vlad Yasevich <vyasevic@...hat.com>,
	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net
Subject: [PATCH v2 net-next 7/7] igb: Enable TSO for stacked vlan

As datasheets for igb (I210, I350, 82576, etc.) say, maclen can be from
14 to 127, which is enough for reasonable number of vlan tags.
My netperf test showed I350's TSO works pretty fine with multiple vlans.

Signed-off-by: Toshiaki Makita <makita.toshiaki@....ntt.co.jp>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/igb/igb_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 0e07545..8457d03 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2093,6 +2093,7 @@ static const struct net_device_ops igb_netdev_ops = {
 #endif
 	.ndo_fix_features	= igb_fix_features,
 	.ndo_set_features	= igb_set_features,
+	.ndo_features_check	= passthru_features_check,
 };
 
 /**
-- 
1.8.1.2


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