Lines Matching +full:overrun +full:- +full:throttle +full:- +full:ms
1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (C) 2000-2005 by David Brownell
5 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
10 * kinds of full and high speed networking devices: host-to-host cables,
37 /*-------------------------------------------------------------------------*/
40 * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
51 #define RX_QLEN(dev) ((dev)->rx_qlen)
52 #define TX_QLEN(dev) ((dev)->tx_qlen)
57 /* throttle rx/tx briefly after some faults, so hub_wq might disconnect()
65 /*-------------------------------------------------------------------------*/
71 static int msg_level = -1;
75 /*-------------------------------------------------------------------------*/
85 for (tmp = 0; tmp < intf->num_altsetting; tmp++) { in usbnet_get_endpoints()
89 alt = intf->altsetting + tmp; in usbnet_get_endpoints()
91 /* take the first altsetting with in-bulk + out-bulk; in usbnet_get_endpoints()
95 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { in usbnet_get_endpoints()
99 e = alt->endpoint + ep; in usbnet_get_endpoints()
102 if (!usb_endpoint_maxp(&e->desc)) in usbnet_get_endpoints()
105 switch (e->desc.bmAttributes) { in usbnet_get_endpoints()
107 if (!usb_endpoint_dir_in(&e->desc)) in usbnet_get_endpoints()
116 if (usb_endpoint_dir_in(&e->desc)) { in usbnet_get_endpoints()
130 return -EINVAL; in usbnet_get_endpoints()
132 if (alt->desc.bAlternateSetting != 0 || in usbnet_get_endpoints()
133 !(dev->driver_info->flags & FLAG_NO_SETINT)) { in usbnet_get_endpoints()
134 tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber, in usbnet_get_endpoints()
135 alt->desc.bAlternateSetting); in usbnet_get_endpoints()
140 dev->in = usb_rcvbulkpipe (dev->udev, in usbnet_get_endpoints()
141 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); in usbnet_get_endpoints()
142 dev->out = usb_sndbulkpipe (dev->udev, in usbnet_get_endpoints()
143 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); in usbnet_get_endpoints()
144 dev->status = status; in usbnet_get_endpoints()
151 int tmp = -1, ret; in usbnet_get_ethernet_addr()
154 ret = usb_string(dev->udev, iMACAddress, buf, sizeof buf); in usbnet_get_ethernet_addr()
156 tmp = hex2bin(dev->net->dev_addr, buf, 6); in usbnet_get_ethernet_addr()
158 dev_dbg(&dev->udev->dev, in usbnet_get_ethernet_addr()
161 ret = -EINVAL; in usbnet_get_ethernet_addr()
170 struct usbnet *dev = urb->context; in intr_complete()
171 int status = urb->status; in intr_complete()
176 dev->driver_info->status(dev, urb); in intr_complete()
179 /* software-driven interface shutdown */ in intr_complete()
180 case -ENOENT: /* urb killed */ in intr_complete()
181 case -ESHUTDOWN: /* hardware gone */ in intr_complete()
182 netif_dbg(dev, ifdown, dev->net, in intr_complete()
190 netdev_dbg(dev->net, "intr status %d\n", status); in intr_complete()
196 netif_err(dev, timer, dev->net, in intr_complete()
197 "intr resubmit --> %d\n", status); in intr_complete()
207 if (!dev->driver_info->status) in init_status()
210 pipe = usb_rcvintpipe (dev->udev, in init_status()
211 dev->status->desc.bEndpointAddress in init_status()
213 maxp = usb_maxpacket (dev->udev, pipe, 0); in init_status()
216 period = max ((int) dev->status->desc.bInterval, in init_status()
217 (dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3); in init_status()
221 dev->interrupt = usb_alloc_urb (0, GFP_KERNEL); in init_status()
222 if (!dev->interrupt) { in init_status()
224 return -ENOMEM; in init_status()
226 usb_fill_int_urb(dev->interrupt, dev->udev, pipe, in init_status()
228 dev->interrupt->transfer_flags |= URB_FREE_BUFFER; in init_status()
229 dev_dbg(&intf->dev, in init_status()
242 WARN_ON_ONCE(dev->interrupt == NULL); in usbnet_status_start()
243 if (dev->interrupt) { in usbnet_status_start()
244 mutex_lock(&dev->interrupt_mutex); in usbnet_status_start()
246 if (++dev->interrupt_count == 1) in usbnet_status_start()
247 ret = usb_submit_urb(dev->interrupt, mem_flags); in usbnet_status_start()
249 dev_dbg(&dev->udev->dev, "incremented interrupt URB count to %d\n", in usbnet_status_start()
250 dev->interrupt_count); in usbnet_status_start()
251 mutex_unlock(&dev->interrupt_mutex); in usbnet_status_start()
262 mutex_lock(&dev->interrupt_mutex); in __usbnet_status_start_force()
263 if (dev->interrupt_count) { in __usbnet_status_start_force()
264 ret = usb_submit_urb(dev->interrupt, mem_flags); in __usbnet_status_start_force()
265 dev_dbg(&dev->udev->dev, in __usbnet_status_start_force()
268 mutex_unlock(&dev->interrupt_mutex); in __usbnet_status_start_force()
275 if (dev->interrupt) { in usbnet_status_stop()
276 mutex_lock(&dev->interrupt_mutex); in usbnet_status_stop()
277 WARN_ON(dev->interrupt_count == 0); in usbnet_status_stop()
279 if (dev->interrupt_count && --dev->interrupt_count == 0) in usbnet_status_stop()
280 usb_kill_urb(dev->interrupt); in usbnet_status_stop()
282 dev_dbg(&dev->udev->dev, in usbnet_status_stop()
284 dev->interrupt_count); in usbnet_status_stop()
285 mutex_unlock(&dev->interrupt_mutex); in usbnet_status_stop()
293 if (dev->interrupt) { in __usbnet_status_stop_force()
294 mutex_lock(&dev->interrupt_mutex); in __usbnet_status_stop_force()
295 usb_kill_urb(dev->interrupt); in __usbnet_status_stop_force()
296 dev_dbg(&dev->udev->dev, "killed interrupt URB for suspend\n"); in __usbnet_status_stop_force()
297 mutex_unlock(&dev->interrupt_mutex); in __usbnet_status_stop_force()
307 struct pcpu_sw_netstats *stats64 = this_cpu_ptr(dev->stats64); in usbnet_skb_return()
311 if (test_bit(EVENT_RX_PAUSED, &dev->flags)) { in usbnet_skb_return()
312 skb_queue_tail(&dev->rxq_pause, skb); in usbnet_skb_return()
317 if (skb->protocol == 0) in usbnet_skb_return()
318 skb->protocol = eth_type_trans (skb, dev->net); in usbnet_skb_return()
320 flags = u64_stats_update_begin_irqsave(&stats64->syncp); in usbnet_skb_return()
321 stats64->rx_packets++; in usbnet_skb_return()
322 stats64->rx_bytes += skb->len; in usbnet_skb_return()
323 u64_stats_update_end_irqrestore(&stats64->syncp, flags); in usbnet_skb_return()
325 netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n", in usbnet_skb_return()
326 skb->len + sizeof (struct ethhdr), skb->protocol); in usbnet_skb_return()
327 memset (skb->cb, 0, sizeof (struct skb_data)); in usbnet_skb_return()
334 netif_dbg(dev, rx_err, dev->net, in usbnet_skb_return()
342 enum usb_device_speed speed = dev->udev->speed; in usbnet_update_max_qlen()
344 if (!dev->rx_urb_size || !dev->hard_mtu) in usbnet_update_max_qlen()
348 dev->rx_qlen = MAX_QUEUE_MEMORY / dev->rx_urb_size; in usbnet_update_max_qlen()
349 dev->tx_qlen = MAX_QUEUE_MEMORY / dev->hard_mtu; in usbnet_update_max_qlen()
354 * Not take default 5ms qlen for super speed HC to in usbnet_update_max_qlen()
355 * save memory, and iperf tests show 2.5ms qlen can in usbnet_update_max_qlen()
358 dev->rx_qlen = 5 * MAX_QUEUE_MEMORY / dev->rx_urb_size; in usbnet_update_max_qlen()
359 dev->tx_qlen = 5 * MAX_QUEUE_MEMORY / dev->hard_mtu; in usbnet_update_max_qlen()
363 dev->rx_qlen = dev->tx_qlen = 4; in usbnet_update_max_qlen()
369 /*-------------------------------------------------------------------------
373 *-------------------------------------------------------------------------*/
378 int ll_mtu = new_mtu + net->hard_header_len; in usbnet_change_mtu()
379 int old_hard_mtu = dev->hard_mtu; in usbnet_change_mtu()
380 int old_rx_urb_size = dev->rx_urb_size; in usbnet_change_mtu()
382 // no second zero-length packet read wanted after mtu-sized packets in usbnet_change_mtu()
383 if ((ll_mtu % dev->maxpacket) == 0) in usbnet_change_mtu()
384 return -EDOM; in usbnet_change_mtu()
385 net->mtu = new_mtu; in usbnet_change_mtu()
387 dev->hard_mtu = net->mtu + net->hard_header_len; in usbnet_change_mtu()
388 if (dev->rx_urb_size == old_hard_mtu) { in usbnet_change_mtu()
389 dev->rx_urb_size = dev->hard_mtu; in usbnet_change_mtu()
390 if (dev->rx_urb_size > old_rx_urb_size) { in usbnet_change_mtu()
404 /* The caller must hold list->lock */
408 struct skb_data *entry = (struct skb_data *) newsk->cb; in __usbnet_queue_skb()
411 entry->state = state; in __usbnet_queue_skb()
414 /*-------------------------------------------------------------------------*/
425 struct skb_data *entry = (struct skb_data *) skb->cb; in defer_bh()
427 spin_lock_irqsave(&list->lock, flags); in defer_bh()
428 old_state = entry->state; in defer_bh()
429 entry->state = state; in defer_bh()
432 /* defer_bh() is never called with list == &dev->done. in defer_bh()
434 * dev->done.lock here with list->lock held. in defer_bh()
436 spin_lock_nested(&dev->done.lock, SINGLE_DEPTH_NESTING); in defer_bh()
438 __skb_queue_tail(&dev->done, skb); in defer_bh()
439 if (dev->done.qlen == 1) in defer_bh()
440 tasklet_schedule(&dev->bh); in defer_bh()
441 spin_unlock(&dev->done.lock); in defer_bh()
442 spin_unlock_irqrestore(&list->lock, flags); in defer_bh()
453 set_bit (work, &dev->flags); in usbnet_defer_kevent()
454 if (!schedule_work (&dev->kevent)) in usbnet_defer_kevent()
455 netdev_dbg(dev->net, "kevent %d may have been dropped\n", work); in usbnet_defer_kevent()
457 netdev_dbg(dev->net, "kevent %d scheduled\n", work); in usbnet_defer_kevent()
461 /*-------------------------------------------------------------------------*/
471 size_t size = dev->rx_urb_size; in rx_submit()
474 if (test_bit(EVENT_RX_KILL, &dev->flags)) { in rx_submit()
476 return -ENOLINK; in rx_submit()
479 if (test_bit(EVENT_NO_IP_ALIGN, &dev->flags)) in rx_submit()
480 skb = __netdev_alloc_skb(dev->net, size, flags); in rx_submit()
482 skb = __netdev_alloc_skb_ip_align(dev->net, size, flags); in rx_submit()
484 netif_dbg(dev, rx_err, dev->net, "no rx skb\n"); in rx_submit()
487 return -ENOMEM; in rx_submit()
490 entry = (struct skb_data *) skb->cb; in rx_submit()
491 entry->urb = urb; in rx_submit()
492 entry->dev = dev; in rx_submit()
493 entry->length = 0; in rx_submit()
495 usb_fill_bulk_urb (urb, dev->udev, dev->in, in rx_submit()
496 skb->data, size, rx_complete, skb); in rx_submit()
498 spin_lock_irqsave (&dev->rxq.lock, lockflags); in rx_submit()
500 if (netif_running (dev->net) && in rx_submit()
501 netif_device_present (dev->net) && in rx_submit()
502 test_bit(EVENT_DEV_OPEN, &dev->flags) && in rx_submit()
503 !test_bit (EVENT_RX_HALT, &dev->flags) && in rx_submit()
504 !test_bit (EVENT_DEV_ASLEEP, &dev->flags)) { in rx_submit()
506 case -EPIPE: in rx_submit()
509 case -ENOMEM: in rx_submit()
512 case -ENODEV: in rx_submit()
513 netif_dbg(dev, ifdown, dev->net, "device gone\n"); in rx_submit()
514 netif_device_detach (dev->net); in rx_submit()
516 case -EHOSTUNREACH: in rx_submit()
517 retval = -ENOLINK; in rx_submit()
520 netif_dbg(dev, rx_err, dev->net, in rx_submit()
522 tasklet_schedule (&dev->bh); in rx_submit()
525 __usbnet_queue_skb(&dev->rxq, skb, rx_start); in rx_submit()
528 netif_dbg(dev, ifdown, dev->net, "rx: stopped\n"); in rx_submit()
529 retval = -ENOLINK; in rx_submit()
531 spin_unlock_irqrestore (&dev->rxq.lock, lockflags); in rx_submit()
540 /*-------------------------------------------------------------------------*/
544 if (dev->driver_info->rx_fixup && in rx_process()
545 !dev->driver_info->rx_fixup (dev, skb)) { in rx_process()
547 if (!(dev->driver_info->flags & FLAG_RX_ASSEMBLE)) in rx_process()
548 dev->net->stats.rx_errors++; in rx_process()
554 if (dev->driver_info->flags & FLAG_MULTI_PACKET) in rx_process()
557 if (skb->len < ETH_HLEN) { in rx_process()
558 dev->net->stats.rx_errors++; in rx_process()
559 dev->net->stats.rx_length_errors++; in rx_process()
560 netif_dbg(dev, rx_err, dev->net, "rx length %d\n", skb->len); in rx_process()
567 skb_queue_tail(&dev->done, skb); in rx_process()
570 /*-------------------------------------------------------------------------*/
574 struct sk_buff *skb = (struct sk_buff *) urb->context; in rx_complete()
575 struct skb_data *entry = (struct skb_data *) skb->cb; in rx_complete()
576 struct usbnet *dev = entry->dev; in rx_complete()
577 int urb_status = urb->status; in rx_complete()
580 skb_put (skb, urb->actual_length); in rx_complete()
582 entry->urb = NULL; in rx_complete()
594 case -EPIPE: in rx_complete()
595 dev->net->stats.rx_errors++; in rx_complete()
599 /* software-driven interface shutdown */ in rx_complete()
600 case -ECONNRESET: /* async unlink */ in rx_complete()
601 case -ESHUTDOWN: /* hardware gone */ in rx_complete()
602 netif_dbg(dev, ifdown, dev->net, in rx_complete()
607 * throttle down resubmits, to avoid log floods; just temporarily, in rx_complete()
610 case -EPROTO: in rx_complete()
611 case -ETIME: in rx_complete()
612 case -EILSEQ: in rx_complete()
613 dev->net->stats.rx_errors++; in rx_complete()
614 if (!timer_pending (&dev->delay)) { in rx_complete()
615 mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES); in rx_complete()
616 netif_dbg(dev, link, dev->net, in rx_complete()
617 "rx throttle %d\n", urb_status); in rx_complete()
621 entry->urb = urb; in rx_complete()
625 /* data overrun ... flush fifo? */ in rx_complete()
626 case -EOVERFLOW: in rx_complete()
627 dev->net->stats.rx_over_errors++; in rx_complete()
632 dev->net->stats.rx_errors++; in rx_complete()
633 netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status); in rx_complete()
638 if (++dev->pkt_cnt > 30) { in rx_complete()
639 dev->pkt_cnt = 0; in rx_complete()
640 dev->pkt_err = 0; in rx_complete()
643 dev->pkt_err++; in rx_complete()
644 if (dev->pkt_err > 20) in rx_complete()
645 set_bit(EVENT_RX_KILL, &dev->flags); in rx_complete()
648 state = defer_bh(dev, skb, &dev->rxq, state); in rx_complete()
651 if (netif_running (dev->net) && in rx_complete()
652 !test_bit (EVENT_RX_HALT, &dev->flags) && in rx_complete()
655 usb_mark_last_busy(dev->udev); in rx_complete()
660 netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n"); in rx_complete()
663 /*-------------------------------------------------------------------------*/
666 set_bit(EVENT_RX_PAUSED, &dev->flags); in usbnet_pause_rx()
668 netif_dbg(dev, rx_status, dev->net, "paused rx queue enabled\n"); in usbnet_pause_rx()
677 clear_bit(EVENT_RX_PAUSED, &dev->flags); in usbnet_resume_rx()
679 while ((skb = skb_dequeue(&dev->rxq_pause)) != NULL) { in usbnet_resume_rx()
684 tasklet_schedule(&dev->bh); in usbnet_resume_rx()
686 netif_dbg(dev, rx_status, dev->net, in usbnet_resume_rx()
693 skb_queue_purge(&dev->rxq_pause); in usbnet_purge_paused_rxq()
697 /*-------------------------------------------------------------------------*/
707 spin_lock_irqsave (&q->lock, flags); in unlink_urbs()
714 entry = (struct skb_data *) skb->cb; in unlink_urbs()
715 if (entry->state != unlink_start) in unlink_urbs()
720 entry->state = unlink_start; in unlink_urbs()
721 urb = entry->urb; in unlink_urbs()
726 * use-after-free problem inside usb_unlink_urb since in unlink_urbs()
731 spin_unlock_irqrestore(&q->lock, flags); in unlink_urbs()
732 // during some PM-driven resume scenarios, in unlink_urbs()
735 if (retval != -EINPROGRESS && retval != 0) in unlink_urbs()
736 netdev_dbg(dev->net, "unlink urb err, %d\n", retval); in unlink_urbs()
740 spin_lock_irqsave(&q->lock, flags); in unlink_urbs()
742 spin_unlock_irqrestore (&q->lock, flags); in unlink_urbs()
751 if (netif_running(dev->net)) { in usbnet_unlink_rx_urbs()
752 (void) unlink_urbs (dev, &dev->rxq); in usbnet_unlink_rx_urbs()
753 tasklet_schedule(&dev->bh); in usbnet_unlink_rx_urbs()
758 /*-------------------------------------------------------------------------*/
764 spin_lock_irqsave(&q->lock, flags); in wait_skb_queue_empty()
766 spin_unlock_irqrestore(&q->lock, flags); in wait_skb_queue_empty()
769 spin_lock_irqsave(&q->lock, flags); in wait_skb_queue_empty()
771 spin_unlock_irqrestore(&q->lock, flags); in wait_skb_queue_empty()
781 add_wait_queue(&dev->wait, &wait); in usbnet_terminate_urbs()
783 temp = unlink_urbs(dev, &dev->txq) + in usbnet_terminate_urbs()
784 unlink_urbs(dev, &dev->rxq); in usbnet_terminate_urbs()
787 wait_skb_queue_empty(&dev->rxq); in usbnet_terminate_urbs()
788 wait_skb_queue_empty(&dev->txq); in usbnet_terminate_urbs()
789 wait_skb_queue_empty(&dev->done); in usbnet_terminate_urbs()
790 netif_dbg(dev, ifdown, dev->net, in usbnet_terminate_urbs()
793 remove_wait_queue(&dev->wait, &wait); in usbnet_terminate_urbs()
799 const struct driver_info *info = dev->driver_info; in usbnet_stop()
802 clear_bit(EVENT_DEV_OPEN, &dev->flags); in usbnet_stop()
805 netif_info(dev, ifdown, dev->net, in usbnet_stop()
807 net->stats.rx_packets, net->stats.tx_packets, in usbnet_stop()
808 net->stats.rx_errors, net->stats.tx_errors); in usbnet_stop()
811 pm = usb_autopm_get_interface(dev->intf); in usbnet_stop()
814 if (info->stop) { in usbnet_stop()
815 retval = info->stop(dev); in usbnet_stop()
817 netif_info(dev, ifdown, dev->net, in usbnet_stop()
818 "stop fail (%d) usbnet usb-%s-%s, %s\n", in usbnet_stop()
820 dev->udev->bus->bus_name, dev->udev->devpath, in usbnet_stop()
821 info->description); in usbnet_stop()
824 if (!(info->flags & FLAG_AVOID_UNLINK_URBS)) in usbnet_stop()
831 mpn = !test_and_clear_bit(EVENT_NO_RUNTIME_PM, &dev->flags); in usbnet_stop()
837 dev->flags = 0; in usbnet_stop()
838 del_timer_sync (&dev->delay); in usbnet_stop()
839 tasklet_kill (&dev->bh); in usbnet_stop()
841 usb_autopm_put_interface(dev->intf); in usbnet_stop()
843 if (info->manage_power && mpn) in usbnet_stop()
844 info->manage_power(dev, 0); in usbnet_stop()
846 usb_autopm_put_interface(dev->intf); in usbnet_stop()
852 /*-------------------------------------------------------------------------*/
862 const struct driver_info *info = dev->driver_info; in usbnet_open()
864 if ((retval = usb_autopm_get_interface(dev->intf)) < 0) { in usbnet_open()
865 netif_info(dev, ifup, dev->net, in usbnet_open()
866 "resumption fail (%d) usbnet usb-%s-%s, %s\n", in usbnet_open()
868 dev->udev->bus->bus_name, in usbnet_open()
869 dev->udev->devpath, in usbnet_open()
870 info->description); in usbnet_open()
875 if (info->reset && (retval = info->reset (dev)) < 0) { in usbnet_open()
876 netif_info(dev, ifup, dev->net, in usbnet_open()
877 "open reset fail (%d) usbnet usb-%s-%s, %s\n", in usbnet_open()
879 dev->udev->bus->bus_name, in usbnet_open()
880 dev->udev->devpath, in usbnet_open()
881 info->description); in usbnet_open()
889 if (info->check_connect && (retval = info->check_connect (dev)) < 0) { in usbnet_open()
890 netif_dbg(dev, ifup, dev->net, "can't open; %d\n", retval); in usbnet_open()
895 if (dev->interrupt) { in usbnet_open()
898 netif_err(dev, ifup, dev->net, in usbnet_open()
904 set_bit(EVENT_DEV_OPEN, &dev->flags); in usbnet_open()
906 netif_info(dev, ifup, dev->net, in usbnet_open()
909 dev->net->mtu, in usbnet_open()
910 (dev->driver_info->flags & FLAG_FRAMING_NC) ? "NetChip" : in usbnet_open()
911 (dev->driver_info->flags & FLAG_FRAMING_GL) ? "GeneSys" : in usbnet_open()
912 (dev->driver_info->flags & FLAG_FRAMING_Z) ? "Zaurus" : in usbnet_open()
913 (dev->driver_info->flags & FLAG_FRAMING_RN) ? "RNDIS" : in usbnet_open()
914 (dev->driver_info->flags & FLAG_FRAMING_AX) ? "ASIX" : in usbnet_open()
918 dev->pkt_cnt = 0; in usbnet_open()
919 dev->pkt_err = 0; in usbnet_open()
920 clear_bit(EVENT_RX_KILL, &dev->flags); in usbnet_open()
923 tasklet_schedule (&dev->bh); in usbnet_open()
924 if (info->manage_power) { in usbnet_open()
925 retval = info->manage_power(dev, 1); in usbnet_open()
928 set_bit(EVENT_NO_RUNTIME_PM, &dev->flags); in usbnet_open()
930 usb_autopm_put_interface(dev->intf); in usbnet_open()
935 usb_autopm_put_interface(dev->intf); in usbnet_open()
941 /*-------------------------------------------------------------------------*/
952 if (!dev->mii.mdio_read) in usbnet_get_link_ksettings()
953 return -EOPNOTSUPP; in usbnet_get_link_ksettings()
955 mii_ethtool_get_link_ksettings(&dev->mii, cmd); in usbnet_get_link_ksettings()
967 if (!dev->mii.mdio_write) in usbnet_set_link_ksettings()
968 return -EOPNOTSUPP; in usbnet_set_link_ksettings()
970 retval = mii_ethtool_set_link_ksettings(&dev->mii, cmd); in usbnet_set_link_ksettings()
973 if (dev->driver_info->link_reset) in usbnet_set_link_ksettings()
974 dev->driver_info->link_reset(dev); in usbnet_set_link_ksettings()
987 netdev_stats_to_stats64(stats, &net->stats); in usbnet_get_stats64()
988 dev_fetch_sw_netstats(stats, dev->stats64); in usbnet_get_stats64()
997 if (dev->driver_info->check_connect) in usbnet_get_link()
998 return dev->driver_info->check_connect (dev) == 0; in usbnet_get_link()
1001 if (dev->mii.mdio_read) in usbnet_get_link()
1002 return mii_link_ok(&dev->mii); in usbnet_get_link()
1013 if (!dev->mii.mdio_write) in usbnet_nway_reset()
1014 return -EOPNOTSUPP; in usbnet_nway_reset()
1016 return mii_nway_restart(&dev->mii); in usbnet_nway_reset()
1024 strlcpy (info->driver, dev->driver_name, sizeof info->driver); in usbnet_get_drvinfo()
1025 strlcpy (info->fw_version, dev->driver_info->description, in usbnet_get_drvinfo()
1026 sizeof info->fw_version); in usbnet_get_drvinfo()
1027 usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info); in usbnet_get_drvinfo()
1035 return dev->msg_enable; in usbnet_get_msglevel()
1043 dev->msg_enable = level; in usbnet_set_msglevel()
1059 /*-------------------------------------------------------------------------*/
1063 if (!test_bit(EVENT_DEV_OPEN, &dev->flags)) in __handle_link_change()
1066 if (!netif_carrier_ok(dev->net)) { in __handle_link_change()
1068 unlink_urbs(dev, &dev->rxq); in __handle_link_change()
1076 tasklet_schedule(&dev->bh); in __handle_link_change()
1082 clear_bit(EVENT_LINK_CHANGE, &dev->flags); in __handle_link_change()
1095 if (dev->driver_info->set_rx_mode) in __handle_set_rx_mode()
1096 (dev->driver_info->set_rx_mode)(dev); in __handle_set_rx_mode()
1098 clear_bit(EVENT_SET_RX_MODE, &dev->flags); in __handle_set_rx_mode()
1114 if (test_bit (EVENT_TX_HALT, &dev->flags)) { in usbnet_deferred_kevent()
1115 unlink_urbs (dev, &dev->txq); in usbnet_deferred_kevent()
1116 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1119 status = usb_clear_halt (dev->udev, dev->out); in usbnet_deferred_kevent()
1120 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1122 status != -EPIPE && in usbnet_deferred_kevent()
1123 status != -ESHUTDOWN) { in usbnet_deferred_kevent()
1126 netdev_err(dev->net, "can't clear tx halt, status %d\n", in usbnet_deferred_kevent()
1129 clear_bit (EVENT_TX_HALT, &dev->flags); in usbnet_deferred_kevent()
1130 if (status != -ESHUTDOWN) in usbnet_deferred_kevent()
1131 netif_wake_queue (dev->net); in usbnet_deferred_kevent()
1134 if (test_bit (EVENT_RX_HALT, &dev->flags)) { in usbnet_deferred_kevent()
1135 unlink_urbs (dev, &dev->rxq); in usbnet_deferred_kevent()
1136 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1139 status = usb_clear_halt (dev->udev, dev->in); in usbnet_deferred_kevent()
1140 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1142 status != -EPIPE && in usbnet_deferred_kevent()
1143 status != -ESHUTDOWN) { in usbnet_deferred_kevent()
1146 netdev_err(dev->net, "can't clear rx halt, status %d\n", in usbnet_deferred_kevent()
1149 clear_bit (EVENT_RX_HALT, &dev->flags); in usbnet_deferred_kevent()
1150 tasklet_schedule (&dev->bh); in usbnet_deferred_kevent()
1155 if (test_bit (EVENT_RX_MEMORY, &dev->flags)) { in usbnet_deferred_kevent()
1159 if (netif_running (dev->net)) in usbnet_deferred_kevent()
1162 clear_bit (EVENT_RX_MEMORY, &dev->flags); in usbnet_deferred_kevent()
1164 clear_bit (EVENT_RX_MEMORY, &dev->flags); in usbnet_deferred_kevent()
1165 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1170 if (rx_submit (dev, urb, GFP_KERNEL) == -ENOLINK) in usbnet_deferred_kevent()
1172 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1175 tasklet_schedule (&dev->bh); in usbnet_deferred_kevent()
1179 if (test_bit (EVENT_LINK_RESET, &dev->flags)) { in usbnet_deferred_kevent()
1180 const struct driver_info *info = dev->driver_info; in usbnet_deferred_kevent()
1183 clear_bit (EVENT_LINK_RESET, &dev->flags); in usbnet_deferred_kevent()
1184 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1187 if(info->link_reset && (retval = info->link_reset(dev)) < 0) { in usbnet_deferred_kevent()
1188 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1190 netdev_info(dev->net, "link reset failed (%d) usbnet usb-%s-%s, %s\n", in usbnet_deferred_kevent()
1192 dev->udev->bus->bus_name, in usbnet_deferred_kevent()
1193 dev->udev->devpath, in usbnet_deferred_kevent()
1194 info->description); in usbnet_deferred_kevent()
1196 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1203 if (test_bit (EVENT_LINK_CHANGE, &dev->flags)) in usbnet_deferred_kevent()
1206 if (test_bit (EVENT_SET_RX_MODE, &dev->flags)) in usbnet_deferred_kevent()
1210 if (dev->flags) in usbnet_deferred_kevent()
1211 netdev_dbg(dev->net, "kevent done, flags = 0x%lx\n", dev->flags); in usbnet_deferred_kevent()
1214 /*-------------------------------------------------------------------------*/
1218 struct sk_buff *skb = (struct sk_buff *) urb->context; in tx_complete()
1219 struct skb_data *entry = (struct skb_data *) skb->cb; in tx_complete()
1220 struct usbnet *dev = entry->dev; in tx_complete()
1222 if (urb->status == 0) { in tx_complete()
1223 struct pcpu_sw_netstats *stats64 = this_cpu_ptr(dev->stats64); in tx_complete()
1226 flags = u64_stats_update_begin_irqsave(&stats64->syncp); in tx_complete()
1227 stats64->tx_packets += entry->packets; in tx_complete()
1228 stats64->tx_bytes += entry->length; in tx_complete()
1229 u64_stats_update_end_irqrestore(&stats64->syncp, flags); in tx_complete()
1231 dev->net->stats.tx_errors++; in tx_complete()
1233 switch (urb->status) { in tx_complete()
1234 case -EPIPE: in tx_complete()
1238 /* software-driven interface shutdown */ in tx_complete()
1239 case -ECONNRESET: // async unlink in tx_complete()
1240 case -ESHUTDOWN: // hardware gone in tx_complete()
1246 case -EPROTO: in tx_complete()
1247 case -ETIME: in tx_complete()
1248 case -EILSEQ: in tx_complete()
1249 usb_mark_last_busy(dev->udev); in tx_complete()
1250 if (!timer_pending (&dev->delay)) { in tx_complete()
1251 mod_timer (&dev->delay, in tx_complete()
1253 netif_dbg(dev, link, dev->net, in tx_complete()
1254 "tx throttle %d\n", urb->status); in tx_complete()
1256 netif_stop_queue (dev->net); in tx_complete()
1259 netif_dbg(dev, tx_err, dev->net, in tx_complete()
1260 "tx err %d\n", entry->urb->status); in tx_complete()
1265 usb_autopm_put_interface_async(dev->intf); in tx_complete()
1266 (void) defer_bh(dev, skb, &dev->txq, tx_done); in tx_complete()
1269 /*-------------------------------------------------------------------------*/
1275 unlink_urbs (dev, &dev->txq); in usbnet_tx_timeout()
1276 tasklet_schedule (&dev->bh); in usbnet_tx_timeout()
1281 if (dev->driver_info->recover) in usbnet_tx_timeout()
1282 (dev->driver_info->recover)(dev); in usbnet_tx_timeout()
1286 /*-------------------------------------------------------------------------*/
1293 num_sgs = skb_shinfo(skb)->nr_frags + 1; in build_dma_sg()
1298 urb->sg = kmalloc_array(num_sgs + 1, sizeof(struct scatterlist), in build_dma_sg()
1300 if (!urb->sg) in build_dma_sg()
1301 return -ENOMEM; in build_dma_sg()
1303 urb->num_sgs = num_sgs; in build_dma_sg()
1304 sg_init_table(urb->sg, urb->num_sgs + 1); in build_dma_sg()
1306 sg_set_buf(&urb->sg[s++], skb->data, skb_headlen(skb)); in build_dma_sg()
1309 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { in build_dma_sg()
1310 skb_frag_t *f = &skb_shinfo(skb)->frags[i]; in build_dma_sg()
1313 sg_set_page(&urb->sg[i + s], skb_frag_page(f), skb_frag_size(f), in build_dma_sg()
1316 urb->transfer_buffer_length = total_len; in build_dma_sg()
1328 const struct driver_info *info = dev->driver_info; in usbnet_start_xmit()
1335 // some devices want funky USB-level framing, for in usbnet_start_xmit()
1337 if (info->tx_fixup) { in usbnet_start_xmit()
1338 skb = info->tx_fixup (dev, skb, GFP_ATOMIC); in usbnet_start_xmit()
1341 if (info->flags & FLAG_MULTI_PACKET) in usbnet_start_xmit()
1343 netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n"); in usbnet_start_xmit()
1349 netif_dbg(dev, tx_err, dev->net, "no urb\n"); in usbnet_start_xmit()
1353 entry = (struct skb_data *) skb->cb; in usbnet_start_xmit()
1354 entry->urb = urb; in usbnet_start_xmit()
1355 entry->dev = dev; in usbnet_start_xmit()
1357 usb_fill_bulk_urb (urb, dev->udev, dev->out, in usbnet_start_xmit()
1358 skb->data, skb->len, tx_complete, skb); in usbnet_start_xmit()
1359 if (dev->can_dma_sg) { in usbnet_start_xmit()
1363 length = urb->transfer_buffer_length; in usbnet_start_xmit()
1366 * NOTE: strictly conforming cdc-ether devices should expect in usbnet_start_xmit()
1367 * the ZLP here, but ignore the one-byte packet. in usbnet_start_xmit()
1372 if (length % dev->maxpacket == 0) { in usbnet_start_xmit()
1373 if (!(info->flags & FLAG_SEND_ZLP)) { in usbnet_start_xmit()
1374 if (!(info->flags & FLAG_MULTI_PACKET)) { in usbnet_start_xmit()
1376 if (skb_tailroom(skb) && !urb->num_sgs) { in usbnet_start_xmit()
1377 skb->data[skb->len] = 0; in usbnet_start_xmit()
1379 } else if (urb->num_sgs) in usbnet_start_xmit()
1380 sg_set_buf(&urb->sg[urb->num_sgs++], in usbnet_start_xmit()
1381 dev->padding_pkt, 1); in usbnet_start_xmit()
1384 urb->transfer_flags |= URB_ZERO_PACKET; in usbnet_start_xmit()
1386 urb->transfer_buffer_length = length; in usbnet_start_xmit()
1388 if (info->flags & FLAG_MULTI_PACKET) { in usbnet_start_xmit()
1393 entry->length += length; in usbnet_start_xmit()
1394 if (WARN_ON_ONCE(entry->length <= 0)) in usbnet_start_xmit()
1395 entry->length = length; in usbnet_start_xmit()
1400 spin_lock_irqsave(&dev->txq.lock, flags); in usbnet_start_xmit()
1401 retval = usb_autopm_get_interface_async(dev->intf); in usbnet_start_xmit()
1403 spin_unlock_irqrestore(&dev->txq.lock, flags); in usbnet_start_xmit()
1407 usb_autopm_put_interface_async(dev->intf); in usbnet_start_xmit()
1408 spin_unlock_irqrestore(&dev->txq.lock, flags); in usbnet_start_xmit()
1414 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { in usbnet_start_xmit()
1416 usb_anchor_urb(urb, &dev->deferred); in usbnet_start_xmit()
1420 spin_unlock_irqrestore(&dev->txq.lock, flags); in usbnet_start_xmit()
1421 netdev_dbg(dev->net, "Delaying transmission for resumption\n"); in usbnet_start_xmit()
1427 case -EPIPE: in usbnet_start_xmit()
1430 usb_autopm_put_interface_async(dev->intf); in usbnet_start_xmit()
1433 usb_autopm_put_interface_async(dev->intf); in usbnet_start_xmit()
1434 netif_dbg(dev, tx_err, dev->net, in usbnet_start_xmit()
1439 __usbnet_queue_skb(&dev->txq, skb, tx_start); in usbnet_start_xmit()
1440 if (dev->txq.qlen >= TX_QLEN (dev)) in usbnet_start_xmit()
1443 spin_unlock_irqrestore (&dev->txq.lock, flags); in usbnet_start_xmit()
1446 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", retval); in usbnet_start_xmit()
1448 dev->net->stats.tx_dropped++; in usbnet_start_xmit()
1453 kfree(urb->sg); in usbnet_start_xmit()
1457 netif_dbg(dev, tx_queued, dev->net, in usbnet_start_xmit()
1458 "> tx, len %u, type 0x%x\n", length, skb->protocol); in usbnet_start_xmit()
1473 for (i = 0; i < 10 && dev->rxq.qlen < RX_QLEN(dev); i++) { in rx_alloc_submit()
1480 ret = -ENOMEM; in rx_alloc_submit()
1488 /*-------------------------------------------------------------------------*/
1498 while ((skb = skb_dequeue (&dev->done))) { in usbnet_bh()
1499 entry = (struct skb_data *) skb->cb; in usbnet_bh()
1500 switch (entry->state) { in usbnet_bh()
1502 entry->state = rx_cleanup; in usbnet_bh()
1506 kfree(entry->urb->sg); in usbnet_bh()
1509 usb_free_urb (entry->urb); in usbnet_bh()
1513 netdev_dbg(dev->net, "bogus skb state %d\n", entry->state); in usbnet_bh()
1518 clear_bit(EVENT_RX_KILL, &dev->flags); in usbnet_bh()
1523 if (waitqueue_active(&dev->wait)) { in usbnet_bh()
1524 if (dev->txq.qlen + dev->rxq.qlen + dev->done.qlen == 0) in usbnet_bh()
1525 wake_up_all(&dev->wait); in usbnet_bh()
1528 } else if (netif_running (dev->net) && in usbnet_bh()
1529 netif_device_present (dev->net) && in usbnet_bh()
1530 netif_carrier_ok(dev->net) && in usbnet_bh()
1531 !timer_pending(&dev->delay) && in usbnet_bh()
1532 !test_bit(EVENT_RX_PAUSED, &dev->flags) && in usbnet_bh()
1533 !test_bit(EVENT_RX_HALT, &dev->flags)) { in usbnet_bh()
1534 int temp = dev->rxq.qlen; in usbnet_bh()
1537 if (rx_alloc_submit(dev, GFP_ATOMIC) == -ENOLINK) in usbnet_bh()
1539 if (temp != dev->rxq.qlen) in usbnet_bh()
1540 netif_dbg(dev, link, dev->net, in usbnet_bh()
1541 "rxqlen %d --> %d\n", in usbnet_bh()
1542 temp, dev->rxq.qlen); in usbnet_bh()
1543 if (dev->rxq.qlen < RX_QLEN(dev)) in usbnet_bh()
1544 tasklet_schedule (&dev->bh); in usbnet_bh()
1546 if (dev->txq.qlen < TX_QLEN (dev)) in usbnet_bh()
1547 netif_wake_queue (dev->net); in usbnet_bh()
1559 /*-------------------------------------------------------------------------
1563 *-------------------------------------------------------------------------*/
1580 netif_info(dev, probe, dev->net, "unregister '%s' usb-%s-%s, %s\n", in usbnet_disconnect()
1581 intf->dev.driver->name, in usbnet_disconnect()
1582 xdev->bus->bus_name, xdev->devpath, in usbnet_disconnect()
1583 dev->driver_info->description); in usbnet_disconnect()
1585 net = dev->net; in usbnet_disconnect()
1588 cancel_work_sync(&dev->kevent); in usbnet_disconnect()
1590 usb_scuttle_anchored_urbs(&dev->deferred); in usbnet_disconnect()
1592 if (dev->driver_info->unbind) in usbnet_disconnect()
1593 dev->driver_info->unbind (dev, intf); in usbnet_disconnect()
1595 usb_kill_urb(dev->interrupt); in usbnet_disconnect()
1596 usb_free_urb(dev->interrupt); in usbnet_disconnect()
1597 kfree(dev->padding_pkt); in usbnet_disconnect()
1599 free_percpu(dev->stats64); in usbnet_disconnect()
1616 /*-------------------------------------------------------------------------*/
1638 struct usb_driver *driver = to_usb_driver(udev->dev.driver); in usbnet_probe()
1644 if (!driver->supports_autosuspend) { in usbnet_probe()
1645 driver->supports_autosuspend = 1; in usbnet_probe()
1646 pm_runtime_enable(&udev->dev); in usbnet_probe()
1649 name = udev->dev.driver->name; in usbnet_probe()
1650 info = (const struct driver_info *) prod->driver_info; in usbnet_probe()
1652 dev_dbg (&udev->dev, "blacklisted by %s\n", name); in usbnet_probe()
1653 return -ENODEV; in usbnet_probe()
1656 interface = udev->cur_altsetting; in usbnet_probe()
1658 status = -ENOMEM; in usbnet_probe()
1666 SET_NETDEV_DEV(net, &udev->dev); in usbnet_probe()
1669 dev->udev = xdev; in usbnet_probe()
1670 dev->intf = udev; in usbnet_probe()
1671 dev->driver_info = info; in usbnet_probe()
1672 dev->driver_name = name; in usbnet_probe()
1674 dev->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); in usbnet_probe()
1675 if (!dev->stats64) in usbnet_probe()
1678 dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV in usbnet_probe()
1680 init_waitqueue_head(&dev->wait); in usbnet_probe()
1681 skb_queue_head_init (&dev->rxq); in usbnet_probe()
1682 skb_queue_head_init (&dev->txq); in usbnet_probe()
1683 skb_queue_head_init (&dev->done); in usbnet_probe()
1684 skb_queue_head_init(&dev->rxq_pause); in usbnet_probe()
1685 dev->bh.func = usbnet_bh_tasklet; in usbnet_probe()
1686 dev->bh.data = (unsigned long)&dev->delay; in usbnet_probe()
1687 INIT_WORK (&dev->kevent, usbnet_deferred_kevent); in usbnet_probe()
1688 init_usb_anchor(&dev->deferred); in usbnet_probe()
1689 timer_setup(&dev->delay, usbnet_bh, 0); in usbnet_probe()
1690 mutex_init (&dev->phy_mutex); in usbnet_probe()
1691 mutex_init(&dev->interrupt_mutex); in usbnet_probe()
1692 dev->interrupt_count = 0; in usbnet_probe()
1694 dev->net = net; in usbnet_probe()
1695 strcpy (net->name, "usb%d"); in usbnet_probe()
1696 memcpy (net->dev_addr, node_id, sizeof node_id); in usbnet_probe()
1701 dev->hard_mtu = net->mtu + net->hard_header_len; in usbnet_probe()
1702 net->min_mtu = 0; in usbnet_probe()
1703 net->max_mtu = ETH_MAX_MTU; in usbnet_probe()
1705 net->netdev_ops = &usbnet_netdev_ops; in usbnet_probe()
1706 net->watchdog_timeo = TX_TIMEOUT_JIFFIES; in usbnet_probe()
1707 net->ethtool_ops = &usbnet_ethtool_ops; in usbnet_probe()
1709 // allow device-specific bind/init procedures in usbnet_probe()
1710 // NOTE net->name still not usable ... in usbnet_probe()
1711 if (info->bind) { in usbnet_probe()
1712 status = info->bind (dev, udev); in usbnet_probe()
1716 // heuristic: "usb%d" for links we know are two-host, in usbnet_probe()
1719 if ((dev->driver_info->flags & FLAG_ETHER) != 0 && in usbnet_probe()
1720 ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 || in usbnet_probe()
1721 (net->dev_addr [0] & 0x02) == 0)) in usbnet_probe()
1722 strcpy (net->name, "eth%d"); in usbnet_probe()
1724 if ((dev->driver_info->flags & FLAG_WLAN) != 0) in usbnet_probe()
1725 strcpy(net->name, "wlan%d"); in usbnet_probe()
1727 if ((dev->driver_info->flags & FLAG_WWAN) != 0) in usbnet_probe()
1728 strcpy(net->name, "wwan%d"); in usbnet_probe()
1731 if ((dev->driver_info->flags & FLAG_NOARP) != 0) in usbnet_probe()
1732 net->flags |= IFF_NOARP; in usbnet_probe()
1735 if (net->mtu > (dev->hard_mtu - net->hard_header_len)) in usbnet_probe()
1736 net->mtu = dev->hard_mtu - net->hard_header_len; in usbnet_probe()
1737 } else if (!info->in || !info->out) in usbnet_probe()
1740 dev->in = usb_rcvbulkpipe (xdev, info->in); in usbnet_probe()
1741 dev->out = usb_sndbulkpipe (xdev, info->out); in usbnet_probe()
1742 if (!(info->flags & FLAG_NO_SETINT)) in usbnet_probe()
1744 interface->desc.bInterfaceNumber, in usbnet_probe()
1745 interface->desc.bAlternateSetting); in usbnet_probe()
1750 if (status >= 0 && dev->status) in usbnet_probe()
1755 if (!dev->rx_urb_size) in usbnet_probe()
1756 dev->rx_urb_size = dev->hard_mtu; in usbnet_probe()
1757 dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1); in usbnet_probe()
1760 if (ether_addr_equal(net->dev_addr, node_id)) in usbnet_probe()
1761 net->addr_assign_type = NET_ADDR_RANDOM; in usbnet_probe()
1763 if ((dev->driver_info->flags & FLAG_WLAN) != 0) in usbnet_probe()
1765 if ((dev->driver_info->flags & FLAG_WWAN) != 0) in usbnet_probe()
1771 if (dev->can_dma_sg && !(info->flags & FLAG_SEND_ZLP) && in usbnet_probe()
1772 !(info->flags & FLAG_MULTI_PACKET)) { in usbnet_probe()
1773 dev->padding_pkt = kzalloc(1, GFP_KERNEL); in usbnet_probe()
1774 if (!dev->padding_pkt) { in usbnet_probe()
1775 status = -ENOMEM; in usbnet_probe()
1783 netif_info(dev, probe, dev->net, in usbnet_probe()
1784 "register '%s' at usb-%s-%s, %s, %pM\n", in usbnet_probe()
1785 udev->dev.driver->name, in usbnet_probe()
1786 xdev->bus->bus_name, xdev->devpath, in usbnet_probe()
1787 dev->driver_info->description, in usbnet_probe()
1788 net->dev_addr); in usbnet_probe()
1795 if (dev->driver_info->flags & FLAG_LINK_INTR) in usbnet_probe()
1801 kfree(dev->padding_pkt); in usbnet_probe()
1803 usb_free_urb(dev->interrupt); in usbnet_probe()
1805 if (info->unbind) in usbnet_probe()
1806 info->unbind (dev, udev); in usbnet_probe()
1813 cancel_work_sync(&dev->kevent); in usbnet_probe()
1814 del_timer_sync(&dev->delay); in usbnet_probe()
1815 free_percpu(dev->stats64); in usbnet_probe()
1823 /*-------------------------------------------------------------------------*/
1834 if (!dev->suspend_count++) { in usbnet_suspend()
1835 spin_lock_irq(&dev->txq.lock); in usbnet_suspend()
1837 if (dev->txq.qlen && PMSG_IS_AUTO(message)) { in usbnet_suspend()
1838 dev->suspend_count--; in usbnet_suspend()
1839 spin_unlock_irq(&dev->txq.lock); in usbnet_suspend()
1840 return -EBUSY; in usbnet_suspend()
1842 set_bit(EVENT_DEV_ASLEEP, &dev->flags); in usbnet_suspend()
1843 spin_unlock_irq(&dev->txq.lock); in usbnet_suspend()
1849 netif_device_detach (dev->net); in usbnet_suspend()
1857 netif_device_attach (dev->net); in usbnet_suspend()
1870 if (!--dev->suspend_count) { in usbnet_resume()
1874 spin_lock_irq(&dev->txq.lock); in usbnet_resume()
1875 while ((res = usb_get_from_anchor(&dev->deferred))) { in usbnet_resume()
1877 skb = (struct sk_buff *)res->context; in usbnet_resume()
1881 kfree(res->sg); in usbnet_resume()
1883 usb_autopm_put_interface_async(dev->intf); in usbnet_resume()
1885 netif_trans_update(dev->net); in usbnet_resume()
1886 __skb_queue_tail(&dev->txq, skb); in usbnet_resume()
1891 clear_bit(EVENT_DEV_ASLEEP, &dev->flags); in usbnet_resume()
1892 spin_unlock_irq(&dev->txq.lock); in usbnet_resume()
1894 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) { in usbnet_resume()
1898 if (netif_device_present(dev->net) && in usbnet_resume()
1899 !timer_pending(&dev->delay) && in usbnet_resume()
1900 !test_bit(EVENT_RX_HALT, &dev->flags)) in usbnet_resume()
1903 if (!(dev->txq.qlen >= TX_QLEN(dev))) in usbnet_resume()
1904 netif_tx_wake_all_queues(dev->net); in usbnet_resume()
1905 tasklet_schedule (&dev->bh); in usbnet_resume()
1909 if (test_and_clear_bit(EVENT_DEVICE_REPORT_IDLE, &dev->flags)) in usbnet_resume()
1923 if (!test_and_set_bit(EVENT_DEVICE_REPORT_IDLE, &dev->flags)) { in usbnet_device_suggests_idle()
1924 dev->intf->needs_remote_wakeup = 1; in usbnet_device_suggests_idle()
1925 usb_autopm_put_interface_async(dev->intf); in usbnet_device_suggests_idle()
1935 dev->intf->needs_remote_wakeup = on; in usbnet_manage_power()
1944 netif_carrier_on(dev->net); in usbnet_link_change()
1946 netif_carrier_off(dev->net); in usbnet_link_change()
1955 /*-------------------------------------------------------------------------*/
1960 int err = -ENOMEM; in __usbnet_read_cmd()
1962 netdev_dbg(dev->net, "usbnet_read_cmd cmd=0x%02x reqtype=%02x" in __usbnet_read_cmd()
1972 err = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), in __usbnet_read_cmd()
1979 netdev_dbg(dev->net, in __usbnet_read_cmd()
1992 int err = -ENOMEM; in __usbnet_write_cmd()
1994 netdev_dbg(dev->net, "usbnet_write_cmd cmd=0x%02x reqtype=%02x" in __usbnet_write_cmd()
2005 err = -EINVAL; in __usbnet_write_cmd()
2010 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), in __usbnet_write_cmd()
2028 if (usb_autopm_get_interface(dev->intf) < 0) in usbnet_read_cmd()
2029 return -ENODEV; in usbnet_read_cmd()
2032 usb_autopm_put_interface(dev->intf); in usbnet_read_cmd()
2046 if (usb_autopm_get_interface(dev->intf) < 0) in usbnet_write_cmd()
2047 return -ENODEV; in usbnet_write_cmd()
2050 usb_autopm_put_interface(dev->intf); in usbnet_write_cmd()
2082 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; in usbnet_async_cmd_cb()
2083 int status = urb->status; in usbnet_async_cmd_cb()
2086 dev_dbg(&urb->dev->dev, "%s failed with %d", in usbnet_async_cmd_cb()
2102 int err = -ENOMEM; in usbnet_write_cmd_async()
2105 netdev_dbg(dev->net, "usbnet_write_cmd cmd=0x%02x reqtype=%02x" in usbnet_write_cmd_async()
2116 netdev_err(dev->net, "Error allocating buffer" in usbnet_write_cmd_async()
2126 req->bRequestType = reqtype; in usbnet_write_cmd_async()
2127 req->bRequest = cmd; in usbnet_write_cmd_async()
2128 req->wValue = cpu_to_le16(value); in usbnet_write_cmd_async()
2129 req->wIndex = cpu_to_le16(index); in usbnet_write_cmd_async()
2130 req->wLength = cpu_to_le16(size); in usbnet_write_cmd_async()
2132 usb_fill_control_urb(urb, dev->udev, in usbnet_write_cmd_async()
2133 usb_sndctrlpipe(dev->udev, 0), in usbnet_write_cmd_async()
2136 urb->transfer_flags |= URB_FREE_BUFFER; in usbnet_write_cmd_async()
2140 netdev_err(dev->net, "Error submitting the control" in usbnet_write_cmd_async()
2156 /*-------------------------------------------------------------------------*/