2 * Copyright (C) 2003-2008 Takahiro Hirofuchi
4 * This is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
20 #include <linux/kernel.h>
21 #include <linux/smp_lock.h>
22 #include <linux/file.h>
23 #include <linux/tcp.h>
25 #include "usbip_common.h"
27 /* version information */
28 #define DRIVER_VERSION "1.0"
29 #define DRIVER_AUTHOR "Takahiro Hirofuchi <hirofuchi _at_ users.sourceforge.net>"
30 #define DRIVER_DESC "usbip common driver"
32 /*-------------------------------------------------------------------------*/
35 #ifdef CONFIG_USB_DEBUG
36 unsigned long usbip_debug_flag = 0xffffffff;
38 unsigned long usbip_debug_flag;
40 EXPORT_SYMBOL_GPL(usbip_debug_flag);
44 struct device_attribute dev_attr_usbip_debug;
45 EXPORT_SYMBOL_GPL(dev_attr_usbip_debug);
48 static ssize_t show_flag(struct device *dev, struct device_attribute *attr,
51 return sprintf(buf, "%lx\n", usbip_debug_flag);
54 static ssize_t store_flag(struct device *dev, struct device_attribute *attr,
55 const char *buf, size_t count)
59 sscanf(buf, "%lx", &flag);
60 usbip_debug_flag = flag;
64 DEVICE_ATTR(usbip_debug, (S_IRUGO | S_IWUSR), show_flag, store_flag);
66 static void usbip_dump_buffer(char *buff, int bufflen)
71 for (i = 0; i < 128; i++) {
74 printk("%02x ", (unsigned char) buff[i]);
80 printk("... (%d byte)\n", bufflen);
84 for (i = 0; i < bufflen; i++) {
87 printk("%02x ", (unsigned char) buff[i]);
97 static void usbip_dump_pipe(unsigned int p)
99 unsigned char type = usb_pipetype(p);
100 unsigned char ep = usb_pipeendpoint(p);
101 unsigned char dev = usb_pipedevice(p);
102 unsigned char dir = usb_pipein(p);
104 printk("dev(%d) ", dev);
105 printk("ep(%d) ", ep);
106 printk("%s ", dir ? "IN" : "OUT");
109 case PIPE_ISOCHRONOUS:
110 printk("%s ", "ISO");
113 printk("%s ", "INT");
116 printk("%s ", "CTL");
119 printk("%s ", "BLK");
129 static void usbip_dump_usb_device(struct usb_device *udev)
131 struct device *dev = &udev->dev;
134 dev_dbg(dev, " devnum(%d) devpath(%s)",
135 udev->devnum, udev->devpath);
137 switch (udev->speed) {
147 case USB_SPEED_UNKNOWN:
148 printk(" SPD_UNKNOWN");
151 printk(" SPD_ERROR");
154 printk(" tt %p, ttport %d", udev->tt, udev->ttport);
158 for (i = 0; i < 16; i++)
162 dev_dbg(dev, " toggle0(IN) :");
163 for (i = 0; i < 16; i++)
164 printk(" %2u", (udev->toggle[0] & (1 << i)) ? 1 : 0);
167 dev_dbg(dev, " toggle1(OUT):");
168 for (i = 0; i < 16; i++)
169 printk(" %2u", (udev->toggle[1] & (1 << i)) ? 1 : 0);
173 dev_dbg(dev, " epmaxp_in :");
174 for (i = 0; i < 16; i++) {
177 le16_to_cpu(udev->ep_in[i]->desc.wMaxPacketSize));
181 dev_dbg(dev, " epmaxp_out :");
182 for (i = 0; i < 16; i++) {
185 le16_to_cpu(udev->ep_out[i]->desc.wMaxPacketSize));
189 dev_dbg(dev, "parent %p, bus %p\n", udev->parent, udev->bus);
191 dev_dbg(dev, "descriptor %p, config %p, actconfig %p, "
192 "rawdescriptors %p\n", &udev->descriptor, udev->config,
193 udev->actconfig, udev->rawdescriptors);
195 dev_dbg(dev, "have_langid %d, string_langid %d\n",
196 udev->have_langid, udev->string_langid);
198 dev_dbg(dev, "maxchild %d, children %p\n",
199 udev->maxchild, udev->children);
202 static void usbip_dump_request_type(__u8 rt)
204 switch (rt & USB_RECIP_MASK) {
205 case USB_RECIP_DEVICE:
208 case USB_RECIP_INTERFACE:
211 case USB_RECIP_ENDPOINT:
214 case USB_RECIP_OTHER:
222 static void usbip_dump_usb_ctrlrequest(struct usb_ctrlrequest *cmd)
225 printk(" %s : null pointer\n", __func__);
230 printk("bRequestType(%02X) ", cmd->bRequestType);
231 printk("bRequest(%02X) " , cmd->bRequest);
232 printk("wValue(%04X) ", cmd->wValue);
233 printk("wIndex(%04X) ", cmd->wIndex);
234 printk("wLength(%04X) ", cmd->wLength);
238 if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
240 switch (cmd->bRequest) {
241 case USB_REQ_GET_STATUS:
242 printk("GET_STATUS");
244 case USB_REQ_CLEAR_FEATURE:
245 printk("CLEAR_FEAT");
247 case USB_REQ_SET_FEATURE:
250 case USB_REQ_SET_ADDRESS:
251 printk("SET_ADDRRS");
253 case USB_REQ_GET_DESCRIPTOR:
254 printk("GET_DESCRI");
256 case USB_REQ_SET_DESCRIPTOR:
257 printk("SET_DESCRI");
259 case USB_REQ_GET_CONFIGURATION:
260 printk("GET_CONFIG");
262 case USB_REQ_SET_CONFIGURATION:
263 printk("SET_CONFIG");
265 case USB_REQ_GET_INTERFACE:
266 printk("GET_INTERF");
268 case USB_REQ_SET_INTERFACE:
269 printk("SET_INTERF");
271 case USB_REQ_SYNCH_FRAME:
272 printk("SYNC_FRAME");
275 printk("REQ(%02X) ", cmd->bRequest);
279 usbip_dump_request_type(cmd->bRequestType);
281 } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS)
284 else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR)
287 else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_RESERVED)
293 void usbip_dump_urb(struct urb *urb)
298 printk(KERN_DEBUG KBUILD_MODNAME
299 ":%s: urb: null pointer!!\n", __func__);
304 printk(KERN_DEBUG KBUILD_MODNAME
305 ":%s: urb->dev: null pointer!!\n", __func__);
308 dev = &urb->dev->dev;
310 dev_dbg(dev, " urb :%p\n", urb);
311 dev_dbg(dev, " dev :%p\n", urb->dev);
313 usbip_dump_usb_device(urb->dev);
315 dev_dbg(dev, " pipe :%08x ", urb->pipe);
317 usbip_dump_pipe(urb->pipe);
319 dev_dbg(dev, " status :%d\n", urb->status);
320 dev_dbg(dev, " transfer_flags :%08X\n", urb->transfer_flags);
321 dev_dbg(dev, " transfer_buffer :%p\n", urb->transfer_buffer);
322 dev_dbg(dev, " transfer_buffer_length:%d\n", urb->transfer_buffer_length);
323 dev_dbg(dev, " actual_length :%d\n", urb->actual_length);
324 dev_dbg(dev, " setup_packet :%p\n", urb->setup_packet);
326 if (urb->setup_packet && usb_pipetype(urb->pipe) == PIPE_CONTROL)
327 usbip_dump_usb_ctrlrequest(
328 (struct usb_ctrlrequest *)urb->setup_packet);
330 dev_dbg(dev, " start_frame :%d\n", urb->start_frame);
331 dev_dbg(dev, " number_of_packets :%d\n", urb->number_of_packets);
332 dev_dbg(dev, " interval :%d\n", urb->interval);
333 dev_dbg(dev, " error_count :%d\n", urb->error_count);
334 dev_dbg(dev, " context :%p\n", urb->context);
335 dev_dbg(dev, " complete :%p\n", urb->complete);
337 EXPORT_SYMBOL_GPL(usbip_dump_urb);
339 void usbip_dump_header(struct usbip_header *pdu)
341 udbg("BASE: cmd %u seq %u devid %u dir %u ep %u\n",
348 switch (pdu->base.command) {
349 case USBIP_CMD_SUBMIT:
350 udbg("CMD_SUBMIT: x_flags %u x_len %u sf %u #p %u iv %u\n",
351 pdu->u.cmd_submit.transfer_flags,
352 pdu->u.cmd_submit.transfer_buffer_length,
353 pdu->u.cmd_submit.start_frame,
354 pdu->u.cmd_submit.number_of_packets,
355 pdu->u.cmd_submit.interval);
357 case USBIP_CMD_UNLINK:
358 udbg("CMD_UNLINK: seq %u\n", pdu->u.cmd_unlink.seqnum);
360 case USBIP_RET_SUBMIT:
361 udbg("RET_SUBMIT: st %d al %u sf %d ec %d\n",
362 pdu->u.ret_submit.status,
363 pdu->u.ret_submit.actual_length,
364 pdu->u.ret_submit.start_frame,
365 pdu->u.ret_submit.error_count);
366 case USBIP_RET_UNLINK:
367 udbg("RET_UNLINK: status %d\n", pdu->u.ret_unlink.status);
374 EXPORT_SYMBOL_GPL(usbip_dump_header);
377 /*-------------------------------------------------------------------------*/
378 /* thread routines */
380 int usbip_thread(void *param)
382 struct usbip_task *ut = param;
389 allow_signal(SIGKILL);
390 ut->thread = current;
393 /* srv.rb must wait for rx_thread starting */
394 complete(&ut->thread_done);
396 /* start of while loop */
402 complete_and_exit(&ut->thread_done, 0);
405 void usbip_start_threads(struct usbip_device *ud)
408 * threads are invoked per one device (per one connection).
412 retval = kernel_thread(usbip_thread, (void *)&ud->tcp_rx, 0);
414 printk(KERN_ERR "Creating tcp_rx thread for ud %p failed.\n",
418 retval = kernel_thread(usbip_thread, (void *)&ud->tcp_tx, 0);
420 printk(KERN_ERR "Creating tcp_tx thread for ud %p failed.\n",
425 /* confirm threads are starting */
426 wait_for_completion(&ud->tcp_rx.thread_done);
427 wait_for_completion(&ud->tcp_tx.thread_done);
429 EXPORT_SYMBOL_GPL(usbip_start_threads);
431 void usbip_stop_threads(struct usbip_device *ud)
433 /* kill threads related to this sdev, if v.c. exists */
434 if (ud->tcp_rx.thread != NULL) {
435 send_sig(SIGKILL, ud->tcp_rx.thread, 1);
436 wait_for_completion(&ud->tcp_rx.thread_done);
437 udbg("rx_thread for ud %p has finished\n", ud);
440 if (ud->tcp_tx.thread != NULL) {
441 send_sig(SIGKILL, ud->tcp_tx.thread, 1);
442 wait_for_completion(&ud->tcp_tx.thread_done);
443 udbg("tx_thread for ud %p has finished\n", ud);
446 EXPORT_SYMBOL_GPL(usbip_stop_threads);
448 void usbip_task_init(struct usbip_task *ut, char *name,
449 void (*loop_ops)(struct usbip_task *))
452 init_completion(&ut->thread_done);
454 ut->loop_ops = loop_ops;
456 EXPORT_SYMBOL_GPL(usbip_task_init);
459 /*-------------------------------------------------------------------------*/
460 /* socket routines */
462 /* Send/receive messages over TCP/IP. I refer drivers/block/nbd.c */
463 int usbip_xmit(int send, struct socket *sock, char *buf,
464 int size, int msg_flags)
471 /* for blocks of if (dbg_flag_xmit) */
477 if (!sock || !buf || !size) {
478 printk(KERN_ERR "%s: invalid arg, sock %p buff %p size %d\n",
479 __func__, sock, buf, size);
487 printk(KERN_DEBUG "%-10s:", current->comm);
489 printk(KERN_DEBUG "interupt :");
491 printk("%s: sending... , sock %p, buf %p, "
492 "size %d, msg_flags %d\n", __func__,
493 sock, buf, size, msg_flags);
494 usbip_dump_buffer(buf, size);
500 sock->sk->sk_allocation = GFP_NOIO;
505 msg.msg_control = NULL;
506 msg.msg_controllen = 0;
508 msg.msg_flags = msg_flags | MSG_NOSIGNAL;
511 result = kernel_sendmsg(sock, &msg, &iov, 1, size);
513 result = kernel_recvmsg(sock, &msg, &iov, 1, size,
517 udbg("usbip_xmit: %s sock %p buf %p size %u ret %d"
519 send ? "send" : "receive", sock, buf,
520 size, result, total);
534 printk(KERN_DEBUG "%-10s:", current->comm);
536 printk(KERN_DEBUG "interupt :");
538 printk("usbip_xmit: receiving....\n");
539 usbip_dump_buffer(bp, osize);
540 printk("usbip_xmit: received, osize %d ret %d size %d "
541 "total %d\n", osize, result, size,
546 printk("usbip_xmit: send, total %d\n", total);
554 EXPORT_SYMBOL_GPL(usbip_xmit);
557 /* now a usrland utility should set options. */
559 int setquickack(struct socket *socket)
567 ret = socket->ops->setsockopt(socket, SOL_TCP, TCP_QUICKACK,
568 (char __user *) &val, sizeof(ret));
574 int setnodelay(struct socket *socket)
582 ret = socket->ops->setsockopt(socket, SOL_TCP, TCP_NODELAY,
583 (char __user *) &val, sizeof(ret));
589 int setkeepalive(struct socket *socket)
597 ret = socket->ops->setsockopt(socket, SOL_SOCKET, SO_KEEPALIVE,
598 (char __user *) &val, sizeof(ret));
604 void setreuse(struct socket *socket)
606 socket->sk->sk_reuse = 1;
610 struct socket *sockfd_to_socket(unsigned int sockfd)
612 struct socket *socket;
618 printk(KERN_ERR "%s: invalid sockfd\n", __func__);
622 inode = file->f_dentry->d_inode;
624 if (!inode || !S_ISSOCK(inode->i_mode))
627 socket = SOCKET_I(inode);
631 EXPORT_SYMBOL_GPL(sockfd_to_socket);
635 /*-------------------------------------------------------------------------*/
638 /* there may be more cases to tweak the flags. */
639 static unsigned int tweak_transfer_flags(unsigned int flags)
642 if (flags & URB_NO_TRANSFER_DMA_MAP)
644 * vhci_hcd does not provide DMA-mapped I/O. The upper
645 * driver does not need to set this flag. The remote
646 * usbip.ko does not still perform DMA-mapped I/O for
647 * DMA-caplable host controllers. So, clear this flag.
649 flags &= ~URB_NO_TRANSFER_DMA_MAP;
651 if (flags & URB_NO_SETUP_DMA_MAP)
652 flags &= ~URB_NO_SETUP_DMA_MAP;
657 static void usbip_pack_cmd_submit(struct usbip_header *pdu, struct urb *urb,
660 struct usbip_header_cmd_submit *spdu = &pdu->u.cmd_submit;
663 * Some members are not still implemented in usbip. I hope this issue
664 * will be discussed when usbip is ported to other operating systems.
668 spdu->transfer_flags =
669 tweak_transfer_flags(urb->transfer_flags);
670 spdu->transfer_buffer_length = urb->transfer_buffer_length;
671 spdu->start_frame = urb->start_frame;
672 spdu->number_of_packets = urb->number_of_packets;
673 spdu->interval = urb->interval;
676 urb->transfer_flags = spdu->transfer_flags;
678 urb->transfer_buffer_length = spdu->transfer_buffer_length;
679 urb->start_frame = spdu->start_frame;
680 urb->number_of_packets = spdu->number_of_packets;
681 urb->interval = spdu->interval;
685 static void usbip_pack_ret_submit(struct usbip_header *pdu, struct urb *urb,
688 struct usbip_header_ret_submit *rpdu = &pdu->u.ret_submit;
693 rpdu->status = urb->status;
694 rpdu->actual_length = urb->actual_length;
695 rpdu->start_frame = urb->start_frame;
696 rpdu->error_count = urb->error_count;
700 urb->status = rpdu->status;
701 urb->actual_length = rpdu->actual_length;
702 urb->start_frame = rpdu->start_frame;
703 urb->error_count = rpdu->error_count;
708 void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,
712 case USBIP_CMD_SUBMIT:
713 usbip_pack_cmd_submit(pdu, urb, pack);
715 case USBIP_RET_SUBMIT:
716 usbip_pack_ret_submit(pdu, urb, pack);
719 err("unknown command");
724 EXPORT_SYMBOL_GPL(usbip_pack_pdu);
727 static void correct_endian_basic(struct usbip_header_basic *base, int send)
730 base->command = cpu_to_be32(base->command);
731 base->seqnum = cpu_to_be32(base->seqnum);
732 base->devid = cpu_to_be32(base->devid);
733 base->direction = cpu_to_be32(base->direction);
734 base->ep = cpu_to_be32(base->ep);
736 base->command = be32_to_cpu(base->command);
737 base->seqnum = be32_to_cpu(base->seqnum);
738 base->devid = be32_to_cpu(base->devid);
739 base->direction = be32_to_cpu(base->direction);
740 base->ep = be32_to_cpu(base->ep);
744 static void correct_endian_cmd_submit(struct usbip_header_cmd_submit *pdu,
748 pdu->transfer_flags = cpu_to_be32(pdu->transfer_flags);
750 cpu_to_be32s(&pdu->transfer_buffer_length);
751 cpu_to_be32s(&pdu->start_frame);
752 cpu_to_be32s(&pdu->number_of_packets);
753 cpu_to_be32s(&pdu->interval);
755 pdu->transfer_flags = be32_to_cpu(pdu->transfer_flags);
757 be32_to_cpus(&pdu->transfer_buffer_length);
758 be32_to_cpus(&pdu->start_frame);
759 be32_to_cpus(&pdu->number_of_packets);
760 be32_to_cpus(&pdu->interval);
764 static void correct_endian_ret_submit(struct usbip_header_ret_submit *pdu,
768 cpu_to_be32s(&pdu->status);
769 cpu_to_be32s(&pdu->actual_length);
770 cpu_to_be32s(&pdu->start_frame);
771 cpu_to_be32s(&pdu->error_count);
773 be32_to_cpus(&pdu->status);
774 be32_to_cpus(&pdu->actual_length);
775 be32_to_cpus(&pdu->start_frame);
776 be32_to_cpus(&pdu->error_count);
780 static void correct_endian_cmd_unlink(struct usbip_header_cmd_unlink *pdu,
784 pdu->seqnum = cpu_to_be32(pdu->seqnum);
786 pdu->seqnum = be32_to_cpu(pdu->seqnum);
789 static void correct_endian_ret_unlink(struct usbip_header_ret_unlink *pdu,
793 cpu_to_be32s(&pdu->status);
795 be32_to_cpus(&pdu->status);
798 void usbip_header_correct_endian(struct usbip_header *pdu, int send)
803 cmd = pdu->base.command;
805 correct_endian_basic(&pdu->base, send);
808 cmd = pdu->base.command;
811 case USBIP_CMD_SUBMIT:
812 correct_endian_cmd_submit(&pdu->u.cmd_submit, send);
814 case USBIP_RET_SUBMIT:
815 correct_endian_ret_submit(&pdu->u.ret_submit, send);
817 case USBIP_CMD_UNLINK:
818 correct_endian_cmd_unlink(&pdu->u.cmd_unlink, send);
820 case USBIP_RET_UNLINK:
821 correct_endian_ret_unlink(&pdu->u.ret_unlink, send);
825 err("unknown command in pdu header: %d", cmd);
829 EXPORT_SYMBOL_GPL(usbip_header_correct_endian);
831 static void usbip_iso_pakcet_correct_endian(
832 struct usbip_iso_packet_descriptor *iso,
835 /* does not need all members. but copy all simply. */
837 iso->offset = cpu_to_be32(iso->offset);
838 iso->length = cpu_to_be32(iso->length);
839 iso->status = cpu_to_be32(iso->status);
840 iso->actual_length = cpu_to_be32(iso->actual_length);
842 iso->offset = be32_to_cpu(iso->offset);
843 iso->length = be32_to_cpu(iso->length);
844 iso->status = be32_to_cpu(iso->status);
845 iso->actual_length = be32_to_cpu(iso->actual_length);
849 static void usbip_pack_iso(struct usbip_iso_packet_descriptor *iso,
850 struct usb_iso_packet_descriptor *uiso, int pack)
853 iso->offset = uiso->offset;
854 iso->length = uiso->length;
855 iso->status = uiso->status;
856 iso->actual_length = uiso->actual_length;
858 uiso->offset = iso->offset;
859 uiso->length = iso->length;
860 uiso->status = iso->status;
861 uiso->actual_length = iso->actual_length;
866 /* must free buffer */
867 void *usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen)
870 struct usbip_iso_packet_descriptor *iso;
871 int np = urb->number_of_packets;
872 ssize_t size = np * sizeof(*iso);
875 buff = kzalloc(size, GFP_KERNEL);
879 for (i = 0; i < np; i++) {
880 iso = buff + (i * sizeof(*iso));
882 usbip_pack_iso(iso, &urb->iso_frame_desc[i], 1);
883 usbip_iso_pakcet_correct_endian(iso, 1);
890 EXPORT_SYMBOL_GPL(usbip_alloc_iso_desc_pdu);
892 /* some members of urb must be substituted before. */
893 int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
896 struct usbip_iso_packet_descriptor *iso;
897 int np = urb->number_of_packets;
898 int size = np * sizeof(*iso);
902 if (!usb_pipeisoc(urb->pipe))
905 /* my Bluetooth dongle gets ISO URBs which are np = 0 */
907 /* uinfo("iso np == 0\n"); */
908 /* usbip_dump_urb(urb); */
912 buff = kzalloc(size, GFP_KERNEL);
916 ret = usbip_xmit(0, ud->tcp_socket, buff, size, 0);
918 dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n",
922 if (ud->side == USBIP_STUB)
923 usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
925 usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
930 for (i = 0; i < np; i++) {
931 iso = buff + (i * sizeof(*iso));
933 usbip_iso_pakcet_correct_endian(iso, 0);
934 usbip_pack_iso(iso, &urb->iso_frame_desc[i], 0);
942 EXPORT_SYMBOL_GPL(usbip_recv_iso);
945 /* some members of urb must be substituted before. */
946 int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
951 if (ud->side == USBIP_STUB) {
953 /* the direction of urb must be OUT. */
954 if (usb_pipein(urb->pipe))
957 size = urb->transfer_buffer_length;
960 /* the direction of urb must be IN. */
961 if (usb_pipeout(urb->pipe))
964 size = urb->actual_length;
967 /* no need to recv xbuff */
971 ret = usbip_xmit(0, ud->tcp_socket, (char *)urb->transfer_buffer,
974 dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
975 if (ud->side == USBIP_STUB) {
976 usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
978 usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
985 EXPORT_SYMBOL_GPL(usbip_recv_xbuff);
988 /*-------------------------------------------------------------------------*/
990 static int __init usbip_common_init(void)
992 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "" DRIVER_VERSION);
997 static void __exit usbip_common_exit(void)
1005 module_init(usbip_common_init);
1006 module_exit(usbip_common_exit);
1008 MODULE_AUTHOR(DRIVER_AUTHOR);
1009 MODULE_DESCRIPTION(DRIVER_DESC);
1010 MODULE_LICENSE("GPL");