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net: dsa: b53: fix jumbo frames on 10/100 ports

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[ Upstream commit 2f3dcd0d39 ]

All modern chips support and need the 10_100 bit set for supporting jumbo
frames on 10/100 ports, so instead of enabling it only for 583XX enable
it for everything except bcm63xx, where the bit is writeable, but does
nothing.

Tested on BCM53115, where jumbo frames were dropped at 10/100 speeds
without the bit set.

Fixes: 6ae5834b98 ("net: dsa: b53: add MTU configuration support")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonas Gorski
2024-10-04 10:47:21 +02:00
committed by Greg Kroah-Hartman
parent 6bc26a82b6
commit 043b681d76
1 changed files with 1 additions and 1 deletions
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drivers/net/dsa/b53/b53_common.c
+1 -1
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@@ -2231,7 +2231,7 @@ static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu)
return 0;
enable_jumbo = (mtu > ETH_DATA_LEN);
allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID);
allow_10_100 = !is63xx(dev);
return b53_set_jumbo(dev, enable_jumbo, allow_10_100);
}