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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 <linus.walleij@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Linus Walleij 2018-07-11 21:32:45 +02:00 committed by David S. Miller
parent 06d5151312
commit 430ac34de9
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/cortina/gemini.c
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@ -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,