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32 lines
1.1 KiB
32 lines
1.1 KiB
6 years ago
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From 1810e953fd59ebb674c292a13eff8d56c88e1c7e Mon Sep 17 00:00:00 2001
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From: John Greb <h3x4m3r0n@gmail.com>
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Date: Sun, 6 May 2018 20:01:57 +0000
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Subject: [PATCH 315/454] usb: gadget ethernet: Re-enable Jumbo frames.
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Commit <eea52743eb5654ec6f52b0e8b4aefec952543697> upstream
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Fixes: <b3e3893e1253> ("net: use core MTU range checking")
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which patched only one of two functions used to setup the
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USB Gadget Ethernet driver, causing a serious performance
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regression in the ability to increase mtu size above 1500.
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Signed-off-by: John Greb <h3x4m3r0n@gmail.com>
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Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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---
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drivers/usb/gadget/function/u_ether.c | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/usb/gadget/function/u_ether.c
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+++ b/drivers/usb/gadget/function/u_ether.c
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@@ -848,6 +848,10 @@ struct net_device *gether_setup_name_def
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net->ethtool_ops = &ops;
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SET_NETDEV_DEVTYPE(net, &gadget_type);
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+ /* MTU range: 14 - 15412 */
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+ net->min_mtu = ETH_HLEN;
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+ net->max_mtu = GETHER_MAX_ETH_FRAME_LEN;
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+
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return net;
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}
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EXPORT_SYMBOL_GPL(gether_setup_name_default);
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