usb/usbip/stub_rx.c

15 static int is_clear_halt_cmd(struct urb *urb)
19 	req = (struct usb_ctrlrequest *) urb->setup_packet;
26 static int is_set_interface_cmd(struct urb *urb)
30 	req = (struct usb_ctrlrequest *) urb->setup_packet;
36 static int is_set_configuration_cmd(struct urb *urb)
40 	req = (struct usb_ctrlrequest *) urb->setup_packet;
46 static int is_reset_device_cmd(struct urb *urb)
52 	req = (struct usb_ctrlrequest *) urb->setup_packet;
65 static int tweak_clear_halt_cmd(struct urb *urb)
73 	req = (struct usb_ctrlrequest *) urb->setup_packet;
77 	 * of the urb is the target of this clear_halt request (i.e., control
86 		target_pipe = usb_rcvctrlpipe(urb->dev, target_endp);
88 		target_pipe = usb_sndctrlpipe(urb->dev, target_endp);
90 	ret = usb_clear_halt(urb->dev, target_pipe);
92 		dev_err(&urb->dev->dev,
94 			urb->dev->devnum, target_endp, ret);
96 		dev_info(&urb->dev->dev,
98 			 urb->dev->devnum, target_endp);
103 static int tweak_set_interface_cmd(struct urb *urb)
110 	req = (struct usb_ctrlrequest *) urb->setup_packet;
117 	ret = usb_set_interface(urb->dev, interface, alternate);
119 		dev_err(&urb->dev->dev,
123 		dev_info(&urb->dev->dev,
130 static int tweak_set_configuration_cmd(struct urb *urb)
132 	struct stub_priv *priv = (struct stub_priv *) urb->context;
138 	req = (struct usb_ctrlrequest *) urb->setup_packet;
150 static int tweak_reset_device_cmd(struct urb *urb)
152 	struct stub_priv *priv = (struct stub_priv *) urb->context;
155 	dev_info(&urb->dev->dev, "usb_queue_reset_device\n");
158 		dev_err(&urb->dev->dev, "could not obtain lock to reset device\n");
170 static void tweak_special_requests(struct urb *urb)
172 	if (!urb || !urb->setup_packet)
175 	if (usb_pipetype(urb->pipe) != PIPE_CONTROL)
178 	if (is_clear_halt_cmd(urb))
180 		 tweak_clear_halt_cmd(urb);
182 	else if (is_set_interface_cmd(urb))
184 		tweak_set_interface_cmd(urb);
186 	else if (is_set_configuration_cmd(urb))
188 		tweak_set_configuration_cmd(urb);
190 	else if (is_reset_device_cmd(urb))
191 		tweak_reset_device_cmd(urb);
198  * By unlinking the urb asynchronously, stub_rx can continuously
199  * process coming urbs.  Even if the urb is unlinked, its completion
218 		 * This matched urb is not completed yet (i.e., be in
229 		 * is changed from the seqnum of the cancelling urb to
248 		/* In the above case, urb->status is not -ECONNRESET,
256 					"failed to unlink %d/%d urb of seqnum %lu, ret %d\n",
267 	 * The urb of the unlink target is not found in priv_init queue. It was
390 static void masking_bogus_flags(struct urb *urb)
398 	if (!urb || urb->hcpriv || !urb->complete)
400 	dev = urb->dev;
404 	ep = (usb_pipein(urb->pipe) ? dev->ep_in : dev->ep_out)
405 		[usb_pipeendpoint(urb->pipe)];
412 			(struct usb_ctrlrequest *) urb->setup_packet;
438 	urb->transfer_flags &= allowed;
491 	/* allocate urb transfer buffer, if needed */
507 				 * urb->sg) and it is used as an indicator that
526 	/* allocate urb array */
532 	/* setup a urb */
551 		/* copy urb setup packet */
595 	/* urb is now ready to submit */
600 			usbip_dbg_stub_rx("submit urb ok, seqnum %u\n",