From 8024dcb1164fd8266f3815aea1ebf7232365de61 Mon Sep 17 00:00:00 2001 From: John Greb Date: Sun, 6 May 2018 20:01:57 +0000 Subject: [PATCH 346/374] usb: gadget ethernet: Re-enable Jumbo frames. Commit upstream Fixes: ("net: use core MTU range checking") which patched only one of two functions used to setup the USB Gadget Ethernet driver, causing a serious performance regression in the ability to increase mtu size above 1500. Signed-off-by: John Greb Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/u_ether.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index bdbc3fdc7c4f..4801ab3ae26f 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -848,6 +848,10 @@ struct net_device *gether_setup_name_default(const char *netname) net->ethtool_ops = &ops; SET_NETDEV_DEVTYPE(net, &gadget_type); + /* MTU range: 14 - 15412 */ + net->min_mtu = ETH_HLEN; + net->max_mtu = GETHER_MAX_ETH_FRAME_LEN; + return net; } EXPORT_SYMBOL_GPL(gether_setup_name_default); -- 2.16.1