linux-kernel - [PATCH v2 net 6/6] net: mvneta: enable IP checksum with jumbo frames for Armada 38x on Port0

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Message-Id: <1448561293-16431-7-git-send-email-mw@semihalf.com>
Date:	Thu, 26 Nov 2015 19:08:13 +0100
From:	Marcin Wojtas <mw@...ihalf.com>
To:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org
Cc:	davem@...emloft.net, linux@....linux.org.uk,
	sebastian.hesselbarth@...il.com, andrew@...n.ch,
	jason@...edaemon.net, thomas.petazzoni@...e-electrons.com,
	gregory.clement@...e-electrons.com, simon.guinot@...uanux.org,
	nadavh@...vell.com, alior@...vell.com, xswang@...vell.com,
	myair@...vell.com, nitroshift@...oo.com, mw@...ihalf.com,
	jaz@...ihalf.com, tn@...ihalf.com, <stable@...r.kernel.org>
Subject: [PATCH v2 net 6/6] net: mvneta: enable IP checksum with jumbo frames for Armada 38x on Port0

The Ethernet controller found in the Armada 38x SoC's family support
TCP/IP checksumming with frame sizes larger than 1600 bytes, however
only on port 0.

This commit enables it by setting 'tx-csum-limit' to 9800B in
'ethernet@...00' node.

Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
Cc: <stable@...r.kernel.org> # v3.18+
---
 arch/arm/boot/dts/armada-38x.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
index c6a0e9d..e8b7f67 100644
--- a/arch/arm/boot/dts/armada-38x.dtsi
+++ b/arch/arm/boot/dts/armada-38x.dtsi
@@ -498,6 +498,7 @@
 				reg = <0x70000 0x4000>;
 				interrupts-extended = <&mpic 8>;
 				clocks = <&gateclk 4>;
+				tx-csum-limit = <9800>;
 				status = "disabled";
 			};
 
-- 
1.8.3.1

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