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usbnet: Detect short packets as sent by the xHCI controller 

The xHCI controller will ignore the endpoint MTU and so may deliver
packets of any length.  Detect short packets as being any packet that
has a length of zero or a length that is not a multiple of the MTU.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
Message-Id: <20220906183053.3625472-4-mcb30@ipxe.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Michael Brown 2022-09-06 19:30:52 +01:00 committed by Gerd Hoffmann
parent 954cbf7bb5
commit 2423ee2338
1 changed files with 1 additions and 1 deletions
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2
hw/usb/dev-network.c
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@ -1211,7 +1211,7 @@ static void usb_net_handle_dataout(USBNetState *s, USBPacket *p)
s->out_ptr += sz;
if (!is_rndis(s)) {
if (p->iov.size < 64) {
if (p->iov.size % 64 || p->iov.size == 0) {
qemu_send_packet(qemu_get_queue(s->nic), s->out_buf, s->out_ptr);
s->out_ptr = 0;
}