From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751913AbdGEPfe (ORCPT ); Wed, 5 Jul 2017 11:35:34 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:3985 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751444AbdGEPfd (ORCPT ); Wed, 5 Jul 2017 11:35:33 -0400 X-IronPort-AV: E=Sophos;i="5.40,312,1496127600"; d="scan'208";a="4398031" From: Nicolas Ferre To: , "David S. Miller" , CC: Alexandre Belloni , , , vishnuvardhan , Nicolas Ferre Subject: [PATCH] net: macb: Adding Support for Jumbo Frames up to 10240 Bytes in SAMA5D3 Date: Wed, 5 Jul 2017 17:36:16 +0200 Message-ID: <20170705153616.15965-1-nicolas.ferre@microchip.com> X-Mailer: git-send-email 2.9.0 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: vishnuvardhan As per the SAMA5D3 device specification it supports Jumbo frames. But the suggested flag and length of bytes it supports was not updated in this driver config_structure. The maximum jumbo frames the device supports : 10240 bytes as per the device spec. While changing the MTU value greater than 1500, it threw error: sudo ifconfig eth1 mtu 9000 SIOCSIFMTU: Invalid argument Add this support to driver so that it works as expected and designed. Signed-off-by: vishnuvardhan [nicolas.ferre@microchip.com: modify slightly commit msg] Signed-off-by: Nicolas Ferre --- drivers/net/ethernet/cadence/macb_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index e69ebdd65658..26d25749c3e4 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -3314,10 +3314,11 @@ static const struct macb_config sama5d2_config = { static const struct macb_config sama5d3_config = { .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE - | MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII, + | MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII | MACB_CAPS_JUMBO, .dma_burst_length = 16, .clk_init = macb_clk_init, .init = macb_init, + .jumbo_max_len = 10240, }; static const struct macb_config sama5d4_config = { -- 2.9.0