linux-kernel - [PATCH 4.14 26/57] net: systemport: set dev->max_mtu to UMAC_MAX_MTU

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Message-Id: <20210111130034.987057399@linuxfoundation.org>
Date:   Mon, 11 Jan 2021 14:01:45 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 4.14 26/57] net: systemport: set dev->max_mtu to UMAC_MAX_MTU_SIZE

From: Florian Fainelli <f.fainelli@...il.com>

[ Upstream commit 54ddbdb024882e226055cc4c3c246592ddde2ee5 ]

The driver is already allocating receive buffers of 2KiB and the
Ethernet MAC is configured to accept frames up to UMAC_MAX_MTU_SIZE.

Fixes: bfcb813203e6 ("net: dsa: configure the MTU for switch ports")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
Reviewed-by: Vladimir Oltean <olteanv@...il.com>
Link: https://lore.kernel.org/r/20201218173843.141046-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/broadcom/bcmsysport.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2153,6 +2153,7 @@ static int bcm_sysport_probe(struct plat
 	/* HW supported features, none enabled by default */
 	dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_HIGHDMA |
 				NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	dev->max_mtu = UMAC_MAX_MTU_SIZE;
 
 	/* Request the WOL interrupt and advertise suspend if available */
 	priv->wol_irq_disabled = 1;