예제 #1
0
/* some members of urb must be substituted before. */
int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
{
	void *buff;
	struct usbip_iso_packet_descriptor *iso;
	int np = urb->number_of_packets;
	int size = np * sizeof(*iso);
	int i;
	int ret;
	int total_length = 0;

	if (!usb_pipeisoc(urb->pipe))
		return 0;

	/* my Bluetooth dongle gets ISO URBs which are np = 0 */
	if (np == 0)
		return 0;

	buff = kzalloc(size, GFP_KERNEL);
	if (!buff)
		return -ENOMEM;

	ret = usbip_recv(ud->tcp_socket, buff, size);
	if (ret != size) {
		dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n",
			ret);
		kfree(buff);

		if (ud->side == USBIP_STUB)
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		else
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);

		return -EPIPE;
	}

	iso = (struct usbip_iso_packet_descriptor *) buff;
	for (i = 0; i < np; i++) {
		usbip_iso_packet_correct_endian(&iso[i], 0);
		usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 0);
		total_length += urb->iso_frame_desc[i].actual_length;
	}

	kfree(buff);

	if (total_length != urb->actual_length) {
		dev_err(&urb->dev->dev,
			"total length of iso packets %d not equal to actual "
			"length of buffer %d\n",
			total_length, urb->actual_length);

		if (ud->side == USBIP_STUB)
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		else
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);

		return -EPIPE;
	}

	return ret;
}
예제 #2
0
/* recv a pdu */
static void stub_rx_pdu(struct usbip_device *ud)
{
	int ret;
	struct usbip_header pdu;
	struct stub_device *sdev = container_of(ud, struct stub_device, ud);

	dbg_stub_rx("Enter\n");

	memset(&pdu, 0, sizeof(pdu));

	/* 1. receive a pdu header */
	dbg_stub_rx("before usbip_xmit\n");
	ret = usbip_xmit(0, ud->tcp_socket, (char *) &pdu, sizeof(pdu), 0);
	dbg_stub_rx("after usbip_xmit\n");
	if (ret != sizeof(pdu)) {
		uerr("recv a header, %d\n", ret);
		usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		return;
	}

	usbip_header_correct_endian(&pdu, 0);

	if (dbg_flag_stub_rx)
		usbip_dump_header(&pdu);

	if (!valid_request(sdev, &pdu)) {
		uerr("recv invalid request\n");
		usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		return;
	}
	
#if CLIENT > 2	
	sdev->heartbeat_pending = 0;
#endif
	switch (pdu.base.command) {
		case USBIP_CMD_UNLINK:
			stub_recv_cmd_unlink(sdev, &pdu);
			break;

		case USBIP_CMD_SUBMIT:
			stub_recv_cmd_submit(sdev, &pdu);
			break;

#if CLIENT > 2	
		// added by tf, 110530
		case USBIP_HEARTBEAT_REPLY:
		    sdev->heartbeat_pending = 0;
			break;
       	 // end --- added
#endif	

		default:
			/* NOTREACHED */
			uerr("unknown pdu\n");
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
			return;
	}

}
예제 #3
0
/* recv a pdu */
static void stub_rx_pdu(struct usbip_device *ud)
{
	int ret;
	struct usbip_header pdu;
	struct stub_device *sdev = container_of(ud, struct stub_device, ud);


	dbg_stub_rx("Enter\n");

	memset(&pdu, 0, sizeof(pdu));


	/* 1. receive a pdu header */
	ret = usbip_xmit(0, ud->tcp_socket, (char *) &pdu, sizeof(pdu),0);
	if (ret != sizeof(pdu)) {
		uerr("recv a header, %d\n", ret);
		usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		return;
	}

	usbip_header_correct_endian(&pdu, 0);

	if (dbg_flag_stub_rx)
		usbip_dump_header(&pdu);

	if (!valid_request(sdev, &pdu)) {
		uerr("recv invalid request\n");
		usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		return;
	}

	switch (pdu.base.command) {
		case USBIP_CMD_UNLINK:
			stub_recv_cmd_unlink(sdev, &pdu);
			break;

		case USBIP_CMD_SUBMIT:
			stub_recv_cmd_submit(sdev, &pdu);
			break;

		default:
			/* NOTREACHED */
			uerr("unknown pdu\n");
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
			return;
	}

}
예제 #4
0
/* Sysfs entry to shutdown a virtual connection */
static int vhci_port_disconnect(__u32 rhport)
{
	struct vhci_device *vdev;

	usbip_dbg_vhci_sysfs("enter\n");

	/* lock */
	spin_lock(&the_controller->lock);

	vdev = port_to_vdev(rhport);

	spin_lock(&vdev->ud.lock);
	if (vdev->ud.status == VDEV_ST_NULL) {
		pr_err("not connected %d\n", vdev->ud.status);

		/* unlock */
		spin_unlock(&vdev->ud.lock);
		spin_unlock(&the_controller->lock);

		return -EINVAL;
	}

	/* unlock */
	spin_unlock(&vdev->ud.lock);
	spin_unlock(&the_controller->lock);

	usbip_event_add(&vdev->ud, VDEV_EVENT_DOWN);

	return 0;
}
예제 #5
0
파일: vhci_sysfs.c 프로젝트: mdamt/linux
/* Sysfs entry to shutdown a virtual connection */
static int vhci_port_disconnect(struct vhci_hcd *vhci_hcd, __u32 rhport)
{
	struct vhci_device *vdev = &vhci_hcd->vdev[rhport];
	struct vhci *vhci = vhci_hcd->vhci;
	unsigned long flags;

	usbip_dbg_vhci_sysfs("enter\n");

	/* lock */
	spin_lock_irqsave(&vhci->lock, flags);
	spin_lock(&vdev->ud.lock);

	if (vdev->ud.status == VDEV_ST_NULL) {
		pr_err("not connected %d\n", vdev->ud.status);

		/* unlock */
		spin_unlock(&vdev->ud.lock);
		spin_unlock_irqrestore(&vhci->lock, flags);

		return -EINVAL;
	}

	/* unlock */
	spin_unlock(&vdev->ud.lock);
	spin_unlock_irqrestore(&vhci->lock, flags);

	usbip_event_add(&vdev->ud, VDEV_EVENT_DOWN);

	return 0;
}
예제 #6
0
static struct stub_priv *stub_priv_alloc(struct stub_device *sdev,
		struct usbip_header *pdu)
{
	struct stub_priv *priv;
	struct usbip_device *ud = &sdev->ud;
	unsigned long flags;

	spin_lock_irqsave(&sdev->priv_lock, flags);

	priv = kmem_cache_alloc(stub_priv_cache, GFP_ATOMIC);
	if (!priv) {
		uerr("alloc stub_priv\n");
		spin_unlock_irqrestore(&sdev->priv_lock, flags);
		usbip_event_add(ud, SDEV_EVENT_ERROR_MALLOC);
		return NULL;
	}

	memset(priv, 0, sizeof(struct stub_priv));

	priv->seqnum = pdu->base.seqnum;
	priv->sdev = sdev;

	/*
	 * After a stub_priv is linked to a list_head,
	 * our error handler can free allocated data.
	 */
	list_add_tail(&priv->list, &sdev->priv_init);

	spin_unlock_irqrestore(&sdev->priv_lock, flags);

	return priv;
}
예제 #7
0
/* some members of urb must be substituted before. */
int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
{
	int ret;
	int size;

	if (ud->side == USBIP_STUB) {
		/* the direction of urb must be OUT. */
		if (usb_pipein(urb->pipe))
			return 0;

		size = urb->transfer_buffer_length;
	} else {
		/* the direction of urb must be IN. */
		if (usb_pipeout(urb->pipe))
			return 0;

		size = urb->actual_length;
	}

	/* no need to recv xbuff */
	if (!(size > 0))
		return 0;

	if (size > urb->transfer_buffer_length) {
		/* should not happen, probably malicious packet */
		if (ud->side == USBIP_STUB) {
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
			return 0;
		} else {
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
			return -EPIPE;
		}
	}

	ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size);
	if (ret != size) {
		dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
		if (ud->side == USBIP_STUB) {
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		} else {
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
			return -EPIPE;
		}
	}

	return ret;
}
예제 #8
0
/* some members of urb must be substituted before. */
int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
{
	void *buff;
	struct usbip_iso_packet_descriptor *iso;
	int np = urb->number_of_packets;
	int size = np * sizeof(*iso);
	int i;
	int ret;

	if (!usb_pipeisoc(urb->pipe))
		return 0;

	buff = kzalloc(size, GFP_KERNEL);
	if (!buff)
		return -ENOMEM;

	ret = usbip_xmit(0, ud->tcp_socket, buff, size, 0);
	if (ret != size) {
		uerr("recv iso_frame_descriptor, %d\n", ret);
		kfree(buff);

		if (ud->side == USBIP_STUB)
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		else
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);

		return -EPIPE;
	}

	for (i = 0; i < np; i++) {
		iso = buff + (i * sizeof(*iso));

		usbip_iso_pakcet_correct_endian(iso, 0);
		usbip_pack_iso(iso, &urb->iso_frame_desc[i], 0);
	}


	kfree(buff);

	return ret;
}
/* some members of urb must be substituted before. */
int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
{
	int ret;
	int size;

	if (ud->side == USBIP_STUB) {
		/* stub_rx.c */
		/* the direction of urb must be OUT. */
		if (usb_pipein(urb->pipe))
			return 0;

		size = urb->transfer_buffer_length;
	} else {
		/* vhci_rx.c */
		/* the direction of urb must be IN. */
		if (usb_pipeout(urb->pipe))
			return 0;

		size = urb->actual_length;
	}

	/* no need to recv xbuff */
	if (!(size > 0))
		return 0;

	ret = usbip_xmit(0, ud->tcp_socket, (char *)urb->transfer_buffer,
			 size, 0);
	if (ret != size) {
		dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
		if (ud->side == USBIP_STUB) {
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		} else {
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
			return -EPIPE;
		}
	}

	return ret;
}
int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
{
	int ret;
	int size;

	if (ud->side == USBIP_STUB) {
		
		
		if (usb_pipein(urb->pipe))
			return 0;

		size = urb->transfer_buffer_length;
	} else {
		
		
		if (usb_pipeout(urb->pipe))
			return 0;

		size = urb->actual_length;
	}

	
	if (!(size > 0))
		return 0;

	ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size);
	if (ret != size) {
		dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
		if (ud->side == USBIP_STUB) {
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		} else {
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
			return -EPIPE;
		}
	}

	return ret;
}
예제 #11
0
int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
{
	int ret;
	char *iso_frame_desc = (char *) &urb->iso_frame_desc[0];
	int np = urb->number_of_packets;
	int size = np * sizeof(struct usb_iso_packet_descriptor);

	if (!usb_pipeisoc(urb->pipe))
		return 0;

	ret = usbip_xmit(0, ud->tcp_socket, iso_frame_desc, size, 0);
	if (ret != size ) {
		uerr("recv iso_frame_descriptor, %d\n", ret);
		if (ud->side == USBIP_STUB) {
			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
		} else {
			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
		}
		return -EPIPE;
	}

	return ret;
}
예제 #12
0
/* be in spin_lock_irqsave(&sdev->priv_lock, flags) */
void stub_enqueue_ret_unlink(struct stub_device *sdev, __u32 seqnum,
			     __u32 status)
{
	struct stub_unlink *unlink;

	unlink = kzalloc(sizeof(struct stub_unlink), GFP_ATOMIC);
	if (!unlink) {
		dev_err(&sdev->interface->dev, "alloc stub_unlink\n");
		usbip_event_add(&sdev->ud, VDEV_EVENT_ERROR_MALLOC);
		return;
	}

	unlink->seqnum = seqnum;
	unlink->status = status;

	list_add_tail(&unlink->list, &sdev->unlink_tx);
}
예제 #13
0
static void stub_recv_cmd_submit(struct stub_device *sdev, struct usbip_header *pdu)
{
	int ret;
	struct stub_priv *priv;
	struct usbip_device *ud = &sdev->ud;
	struct usb_device *udev = interface_to_usbdev(sdev->interface);
	int pipe = get_pipe(sdev, pdu->base.ep, pdu->base.direction);


	priv = stub_priv_alloc(sdev, pdu);
	if (!priv)
		return;

	/* setup a urb */
	if (usb_pipeisoc(pipe))
		priv->urb = usb_alloc_urb(pdu->u.cmd_submit.number_of_packets, GFP_KERNEL);
	else
		priv->urb = usb_alloc_urb(0, GFP_KERNEL);

	if (!priv->urb) {
		uerr("malloc urb\n");
		usbip_event_add(ud, SDEV_EVENT_ERROR_MALLOC);
		return;
	}

	/* set priv->urb->transfer_buffer */
	if (pdu->u.cmd_submit.transfer_buffer_length > 0) {
		priv->urb->transfer_buffer =
			kzalloc(pdu->u.cmd_submit.transfer_buffer_length, GFP_KERNEL);
		if (!priv->urb->transfer_buffer) {
			uerr("malloc x_buff\n");
			usbip_event_add(ud, SDEV_EVENT_ERROR_MALLOC);
			return;
		}
	}

	/* set priv->urb->setup_packet */
	priv->urb->setup_packet = kzalloc(8, GFP_KERNEL);
	if (!priv->urb->setup_packet) {
		uerr("allocate setup_packet\n");
		usbip_event_add(ud, SDEV_EVENT_ERROR_MALLOC);
		return;
	}
	memcpy(priv->urb->setup_packet, &pdu->u.cmd_submit.setup, 8);

	/* set other members from the base header of pdu */
	priv->urb->context                = (void *) priv;
	priv->urb->dev                    = udev;
	priv->urb->pipe                   = pipe;
	priv->urb->complete               = stub_complete;

	usbip_pack_pdu(pdu, priv->urb, USBIP_CMD_SUBMIT, 0);


	if (usbip_recv_xbuff(ud, priv->urb) < 0)
		return;

	if (usbip_recv_iso(ud, priv->urb) < 0)
		return;

	/* no need to submit an intercepted request, but harmless? */
	tweak_special_requests(priv->urb);

	/* urb is now ready to submit */
	ret = usb_submit_urb(priv->urb, GFP_KERNEL);

	if (ret == 0)
		dbg_stub_rx("submit urb ok, seqnum %u\n", pdu->base.seqnum);
	else {
		uerr("submit_urb error, %d\n", ret);
		usbip_dump_header(pdu);
		usbip_dump_urb(priv->urb);

		/*
		 * Pessimistic.
		 * This connection will be discarded.
		 */
		usbip_event_add(ud, SDEV_EVENT_ERROR_SUBMIT);
	}

	dbg_stub_rx("Leave\n");
	return;
}