From 156fe33e3b4c69b6a6d9b9f7fffa6c2ddc2e3747 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Fri, 4 Oct 2024 10:47:21 +0200 Subject: [PATCH] net: dsa: b53: fix jumbo frames on 10/100 ports [ Upstream commit 2f3dcd0d39affe5b9ba1c351ce0e270c8bdd5109 ] 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: 6ae5834b983a ("net: dsa: b53: add MTU configuration support") Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/dsa/b53/b53_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 459caaf6a..2fc33019e 100755 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -2188,7 +2188,7 @@ 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); }