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Fix for packets being rejected in the ring buffer used by the xHCI co… #805

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Fix for packets being rejected in the ring buffer used by the xHCI co… #805

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7 changes: 7 additions & 0 deletions drivers/net/usb/qmi_wwan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -815,6 +815,13 @@ static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
}
dev->net->netdev_ops = &qmi_wwan_netdev_ops;
dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group;
/* LTE Networks don't always respect their own MTU on receive side;
* e.g. AT&T pushes 1430 MTU but still allows 1500 byte packets from
* far-end network. Make receive buffer large enough to accommodate
* them, and add four bytes so MTU does not equal MRU on network
* with 1500 MTU otherwise usbnet_change_mtu() will change both.
*/
dev->rx_urb_size = ETH_DATA_LEN + 4;
err:
return status;
}
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