From 430ac34de9693bfe4bea0bab830e0ca0be9ef4b9 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 11 Jul 2018 21:32:45 +0200 Subject: [PATCH] net: gemini: Indicate that we can handle jumboframes The hardware supposedly handles frames up to 10236 bytes and implements .ndo_change_mtu() so accept 10236 minus the ethernet header for a VLAN tagged frame on the netdevices. Use ETH_MIN_MTU as minimum MTU. Signed-off-by: Linus Walleij Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/ethernet/cortina/gemini.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c index 050fffb77d11..1c9ad3630c77 100644 --- a/drivers/net/ethernet/cortina/gemini.c +++ b/drivers/net/ethernet/cortina/gemini.c @@ -2476,6 +2476,11 @@ static int gemini_ethernet_port_probe(struct platform_device *pdev) netdev->hw_features = GMAC_OFFLOAD_FEATURES; netdev->features |= GMAC_OFFLOAD_FEATURES | NETIF_F_GRO; + /* We can handle jumbo frames up to 10236 bytes so, let's accept + * payloads of 10236 bytes minus VLAN and ethernet header + */ + netdev->min_mtu = ETH_MIN_MTU; + netdev->max_mtu = 10236 - VLAN_ETH_HLEN; port->freeq_refill = 0; netif_napi_add(netdev, &port->napi, gmac_napi_poll,