rndis_host: reduce MTU instead of refusing to talk to devices with low max packet size (500d2c2f) · Commits · 戴 / test

This patch makes the host RNDIS driver talk to RNDIS devices with an MTU less than 1.5k, instead of refusing to talk to such a device. Signed-Off-by:

Thomas Sailer <t.sailer@alumni.ethz.ch> Acked-by:

David Brownell <dbrownell@users.sourceforge.net> -- Hi Jeff, are you the right person to send this to? Nobody else seems to be wanting to forward this to Linus... Thanks, Tom Signed-off-by:

Jeff Garzik <jeff@garzik.org>

drivers/net/usb/rndis_host.c

+13 −5

Original line number	Diff line number	Diff line
		@@ -512,12 +512,20 @@ static int rndis_bind(struct usbnet dev, struct usb_interface intf)
		}
		tmp = le32_to_cpu(u.init_c->max_transfer_size);
		if (tmp < dev->hard_mtu) {
		if (tmp <= net->hard_header_len) {
		dev_err(&intf->dev,
		"dev can't take %u byte packets (max %u)\n",
		dev->hard_mtu, tmp);
		retval = -EINVAL;
		goto fail_and_release;
		}
		dev->hard_mtu = tmp;
		net->mtu = dev->hard_mtu - net->hard_header_len;
		dev_warn(&intf->dev,
		"dev can't take %u byte packets (max %u), "
		"adjusting MTU to %u\n",
		dev->hard_mtu, tmp, net->mtu);
		}

		/* REVISIT: peripheral "alignment" request is ignored ... */
		dev_dbg(&intf->dev,

Admin message