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()
834 dev->flags = 0; in usbnet_stop()
835 del_timer_sync (&dev->delay); in usbnet_stop()
836 tasklet_kill (&dev->bh); in usbnet_stop()
837 cancel_work_sync(&dev->kevent); in usbnet_stop()
839 usb_autopm_put_interface(dev->intf); in usbnet_stop()
841 if (info->manage_power && mpn) in usbnet_stop()
842 info->manage_power(dev, 0); in usbnet_stop()
844 usb_autopm_put_interface(dev->intf); in usbnet_stop()
850 /*-------------------------------------------------------------------------*/
860 const struct driver_info *info = dev->driver_info; in usbnet_open()
862 if ((retval = usb_autopm_get_interface(dev->intf)) < 0) { in usbnet_open()
863 netif_info(dev, ifup, dev->net, in usbnet_open()
864 "resumption fail (%d) usbnet usb-%s-%s, %s\n", in usbnet_open()
866 dev->udev->bus->bus_name, in usbnet_open()
867 dev->udev->devpath, in usbnet_open()
868 info->description); in usbnet_open()
873 if (info->reset && (retval = info->reset (dev)) < 0) { in usbnet_open()
874 netif_info(dev, ifup, dev->net, in usbnet_open()
875 "open reset fail (%d) usbnet usb-%s-%s, %s\n", in usbnet_open()
877 dev->udev->bus->bus_name, in usbnet_open()
878 dev->udev->devpath, in usbnet_open()
879 info->description); in usbnet_open()
887 if (info->check_connect && (retval = info->check_connect (dev)) < 0) { in usbnet_open()
888 netif_dbg(dev, ifup, dev->net, "can't open; %d\n", retval); in usbnet_open()
893 if (dev->interrupt) { in usbnet_open()
896 netif_err(dev, ifup, dev->net, in usbnet_open()
902 set_bit(EVENT_DEV_OPEN, &dev->flags); in usbnet_open()
904 netif_info(dev, ifup, dev->net, in usbnet_open()
907 dev->net->mtu, in usbnet_open()
908 (dev->driver_info->flags & FLAG_FRAMING_NC) ? "NetChip" : in usbnet_open()
909 (dev->driver_info->flags & FLAG_FRAMING_GL) ? "GeneSys" : in usbnet_open()
910 (dev->driver_info->flags & FLAG_FRAMING_Z) ? "Zaurus" : in usbnet_open()
911 (dev->driver_info->flags & FLAG_FRAMING_RN) ? "RNDIS" : in usbnet_open()
912 (dev->driver_info->flags & FLAG_FRAMING_AX) ? "ASIX" : in usbnet_open()
916 dev->pkt_cnt = 0; in usbnet_open()
917 dev->pkt_err = 0; in usbnet_open()
918 clear_bit(EVENT_RX_KILL, &dev->flags); in usbnet_open()
921 tasklet_schedule (&dev->bh); in usbnet_open()
922 if (info->manage_power) { in usbnet_open()
923 retval = info->manage_power(dev, 1); in usbnet_open()
926 set_bit(EVENT_NO_RUNTIME_PM, &dev->flags); in usbnet_open()
928 usb_autopm_put_interface(dev->intf); in usbnet_open()
933 usb_autopm_put_interface(dev->intf); in usbnet_open()
939 /*-------------------------------------------------------------------------*/
950 if (!dev->mii.mdio_read) in usbnet_get_link_ksettings()
951 return -EOPNOTSUPP; in usbnet_get_link_ksettings()
953 mii_ethtool_get_link_ksettings(&dev->mii, cmd); in usbnet_get_link_ksettings()
965 if (!dev->mii.mdio_write) in usbnet_set_link_ksettings()
966 return -EOPNOTSUPP; in usbnet_set_link_ksettings()
968 retval = mii_ethtool_set_link_ksettings(&dev->mii, cmd); in usbnet_set_link_ksettings()
971 if (dev->driver_info->link_reset) in usbnet_set_link_ksettings()
972 dev->driver_info->link_reset(dev); in usbnet_set_link_ksettings()
985 netdev_stats_to_stats64(stats, &net->stats); in usbnet_get_stats64()
986 dev_fetch_sw_netstats(stats, dev->stats64); in usbnet_get_stats64()
995 if (dev->driver_info->check_connect) in usbnet_get_link()
996 return dev->driver_info->check_connect (dev) == 0; in usbnet_get_link()
999 if (dev->mii.mdio_read) in usbnet_get_link()
1000 return mii_link_ok(&dev->mii); in usbnet_get_link()
1011 if (!dev->mii.mdio_write) in usbnet_nway_reset()
1012 return -EOPNOTSUPP; in usbnet_nway_reset()
1014 return mii_nway_restart(&dev->mii); in usbnet_nway_reset()
1022 strlcpy (info->driver, dev->driver_name, sizeof info->driver); in usbnet_get_drvinfo()
1023 strlcpy (info->fw_version, dev->driver_info->description, in usbnet_get_drvinfo()
1024 sizeof info->fw_version); in usbnet_get_drvinfo()
1025 usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info); in usbnet_get_drvinfo()
1033 return dev->msg_enable; in usbnet_get_msglevel()
1041 dev->msg_enable = level; in usbnet_set_msglevel()
1057 /*-------------------------------------------------------------------------*/
1061 if (!test_bit(EVENT_DEV_OPEN, &dev->flags)) in __handle_link_change()
1064 if (!netif_carrier_ok(dev->net)) { in __handle_link_change()
1066 unlink_urbs(dev, &dev->rxq); in __handle_link_change()
1074 tasklet_schedule(&dev->bh); in __handle_link_change()
1080 clear_bit(EVENT_LINK_CHANGE, &dev->flags); in __handle_link_change()
1093 if (dev->driver_info->set_rx_mode) in __handle_set_rx_mode()
1094 (dev->driver_info->set_rx_mode)(dev); in __handle_set_rx_mode()
1096 clear_bit(EVENT_SET_RX_MODE, &dev->flags); in __handle_set_rx_mode()
1112 if (test_bit (EVENT_TX_HALT, &dev->flags)) { in usbnet_deferred_kevent()
1113 unlink_urbs (dev, &dev->txq); in usbnet_deferred_kevent()
1114 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1117 status = usb_clear_halt (dev->udev, dev->out); in usbnet_deferred_kevent()
1118 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1120 status != -EPIPE && in usbnet_deferred_kevent()
1121 status != -ESHUTDOWN) { in usbnet_deferred_kevent()
1124 netdev_err(dev->net, "can't clear tx halt, status %d\n", in usbnet_deferred_kevent()
1127 clear_bit (EVENT_TX_HALT, &dev->flags); in usbnet_deferred_kevent()
1128 if (status != -ESHUTDOWN) in usbnet_deferred_kevent()
1129 netif_wake_queue (dev->net); in usbnet_deferred_kevent()
1132 if (test_bit (EVENT_RX_HALT, &dev->flags)) { in usbnet_deferred_kevent()
1133 unlink_urbs (dev, &dev->rxq); in usbnet_deferred_kevent()
1134 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1137 status = usb_clear_halt (dev->udev, dev->in); in usbnet_deferred_kevent()
1138 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1140 status != -EPIPE && in usbnet_deferred_kevent()
1141 status != -ESHUTDOWN) { in usbnet_deferred_kevent()
1144 netdev_err(dev->net, "can't clear rx halt, status %d\n", in usbnet_deferred_kevent()
1147 clear_bit (EVENT_RX_HALT, &dev->flags); in usbnet_deferred_kevent()
1148 tasklet_schedule (&dev->bh); in usbnet_deferred_kevent()
1153 if (test_bit (EVENT_RX_MEMORY, &dev->flags)) { in usbnet_deferred_kevent()
1157 if (netif_running (dev->net)) in usbnet_deferred_kevent()
1160 clear_bit (EVENT_RX_MEMORY, &dev->flags); in usbnet_deferred_kevent()
1162 clear_bit (EVENT_RX_MEMORY, &dev->flags); in usbnet_deferred_kevent()
1163 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1168 if (rx_submit (dev, urb, GFP_KERNEL) == -ENOLINK) in usbnet_deferred_kevent()
1170 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1173 tasklet_schedule (&dev->bh); in usbnet_deferred_kevent()
1177 if (test_bit (EVENT_LINK_RESET, &dev->flags)) { in usbnet_deferred_kevent()
1178 const struct driver_info *info = dev->driver_info; in usbnet_deferred_kevent()
1181 clear_bit (EVENT_LINK_RESET, &dev->flags); in usbnet_deferred_kevent()
1182 status = usb_autopm_get_interface(dev->intf); in usbnet_deferred_kevent()
1185 if(info->link_reset && (retval = info->link_reset(dev)) < 0) { in usbnet_deferred_kevent()
1186 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1188 netdev_info(dev->net, "link reset failed (%d) usbnet usb-%s-%s, %s\n", in usbnet_deferred_kevent()
1190 dev->udev->bus->bus_name, in usbnet_deferred_kevent()
1191 dev->udev->devpath, in usbnet_deferred_kevent()
1192 info->description); in usbnet_deferred_kevent()
1194 usb_autopm_put_interface(dev->intf); in usbnet_deferred_kevent()
1201 if (test_bit (EVENT_LINK_CHANGE, &dev->flags)) in usbnet_deferred_kevent()
1204 if (test_bit (EVENT_SET_RX_MODE, &dev->flags)) in usbnet_deferred_kevent()
1208 if (dev->flags) in usbnet_deferred_kevent()
1209 netdev_dbg(dev->net, "kevent done, flags = 0x%lx\n", dev->flags); in usbnet_deferred_kevent()
1212 /*-------------------------------------------------------------------------*/
1216 struct sk_buff *skb = (struct sk_buff *) urb->context; in tx_complete()
1217 struct skb_data *entry = (struct skb_data *) skb->cb; in tx_complete()
1218 struct usbnet *dev = entry->dev; in tx_complete()
1220 if (urb->status == 0) { in tx_complete()
1221 struct pcpu_sw_netstats *stats64 = this_cpu_ptr(dev->stats64); in tx_complete()
1224 flags = u64_stats_update_begin_irqsave(&stats64->syncp); in tx_complete()
1225 stats64->tx_packets += entry->packets; in tx_complete()
1226 stats64->tx_bytes += entry->length; in tx_complete()
1227 u64_stats_update_end_irqrestore(&stats64->syncp, flags); in tx_complete()
1229 dev->net->stats.tx_errors++; in tx_complete()
1231 switch (urb->status) { in tx_complete()
1232 case -EPIPE: in tx_complete()
1236 /* software-driven interface shutdown */ in tx_complete()
1237 case -ECONNRESET: // async unlink in tx_complete()
1238 case -ESHUTDOWN: // hardware gone in tx_complete()
1244 case -EPROTO: in tx_complete()
1245 case -ETIME: in tx_complete()
1246 case -EILSEQ: in tx_complete()
1247 usb_mark_last_busy(dev->udev); in tx_complete()
1248 if (!timer_pending (&dev->delay)) { in tx_complete()
1249 mod_timer (&dev->delay, in tx_complete()
1251 netif_dbg(dev, link, dev->net, in tx_complete()
1252 "tx throttle %d\n", urb->status); in tx_complete()
1254 netif_stop_queue (dev->net); in tx_complete()
1257 netif_dbg(dev, tx_err, dev->net, in tx_complete()
1258 "tx err %d\n", entry->urb->status); in tx_complete()
1263 usb_autopm_put_interface_async(dev->intf); in tx_complete()
1264 (void) defer_bh(dev, skb, &dev->txq, tx_done); in tx_complete()
1267 /*-------------------------------------------------------------------------*/
1273 unlink_urbs (dev, &dev->txq); in usbnet_tx_timeout()
1274 tasklet_schedule (&dev->bh); in usbnet_tx_timeout()
1279 if (dev->driver_info->recover) in usbnet_tx_timeout()
1280 (dev->driver_info->recover)(dev); in usbnet_tx_timeout()
1284 /*-------------------------------------------------------------------------*/
1291 num_sgs = skb_shinfo(skb)->nr_frags + 1; in build_dma_sg()
1296 urb->sg = kmalloc_array(num_sgs + 1, sizeof(struct scatterlist), in build_dma_sg()
1298 if (!urb->sg) in build_dma_sg()
1299 return -ENOMEM; in build_dma_sg()
1301 urb->num_sgs = num_sgs; in build_dma_sg()
1302 sg_init_table(urb->sg, urb->num_sgs + 1); in build_dma_sg()
1304 sg_set_buf(&urb->sg[s++], skb->data, skb_headlen(skb)); in build_dma_sg()
1307 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { in build_dma_sg()
1308 skb_frag_t *f = &skb_shinfo(skb)->frags[i]; in build_dma_sg()
1311 sg_set_page(&urb->sg[i + s], skb_frag_page(f), skb_frag_size(f), in build_dma_sg()
1314 urb->transfer_buffer_length = total_len; in build_dma_sg()
1326 const struct driver_info *info = dev->driver_info; in usbnet_start_xmit()
1333 // some devices want funky USB-level framing, for in usbnet_start_xmit()
1335 if (info->tx_fixup) { in usbnet_start_xmit()
1336 skb = info->tx_fixup (dev, skb, GFP_ATOMIC); in usbnet_start_xmit()
1339 if (info->flags & FLAG_MULTI_PACKET) in usbnet_start_xmit()
1341 netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n"); in usbnet_start_xmit()
1347 netif_dbg(dev, tx_err, dev->net, "no urb\n"); in usbnet_start_xmit()
1351 entry = (struct skb_data *) skb->cb; in usbnet_start_xmit()
1352 entry->urb = urb; in usbnet_start_xmit()
1353 entry->dev = dev; in usbnet_start_xmit()
1355 usb_fill_bulk_urb (urb, dev->udev, dev->out, in usbnet_start_xmit()
1356 skb->data, skb->len, tx_complete, skb); in usbnet_start_xmit()
1357 if (dev->can_dma_sg) { in usbnet_start_xmit()
1361 length = urb->transfer_buffer_length; in usbnet_start_xmit()
1364 * NOTE: strictly conforming cdc-ether devices should expect in usbnet_start_xmit()
1365 * the ZLP here, but ignore the one-byte packet. in usbnet_start_xmit()
1370 if (length % dev->maxpacket == 0) { in usbnet_start_xmit()
1371 if (!(info->flags & FLAG_SEND_ZLP)) { in usbnet_start_xmit()
1372 if (!(info->flags & FLAG_MULTI_PACKET)) { in usbnet_start_xmit()
1374 if (skb_tailroom(skb) && !urb->num_sgs) { in usbnet_start_xmit()
1375 skb->data[skb->len] = 0; in usbnet_start_xmit()
1377 } else if (urb->num_sgs) in usbnet_start_xmit()
1378 sg_set_buf(&urb->sg[urb->num_sgs++], in usbnet_start_xmit()
1379 dev->padding_pkt, 1); in usbnet_start_xmit()
1382 urb->transfer_flags |= URB_ZERO_PACKET; in usbnet_start_xmit()
1384 urb->transfer_buffer_length = length; in usbnet_start_xmit()
1386 if (info->flags & FLAG_MULTI_PACKET) { in usbnet_start_xmit()
1391 entry->length += length; in usbnet_start_xmit()
1392 if (WARN_ON_ONCE(entry->length <= 0)) in usbnet_start_xmit()
1393 entry->length = length; in usbnet_start_xmit()
1398 spin_lock_irqsave(&dev->txq.lock, flags); in usbnet_start_xmit()
1399 retval = usb_autopm_get_interface_async(dev->intf); in usbnet_start_xmit()
1401 spin_unlock_irqrestore(&dev->txq.lock, flags); in usbnet_start_xmit()
1405 usb_autopm_put_interface_async(dev->intf); in usbnet_start_xmit()
1406 spin_unlock_irqrestore(&dev->txq.lock, flags); in usbnet_start_xmit()
1412 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { in usbnet_start_xmit()
1414 usb_anchor_urb(urb, &dev->deferred); in usbnet_start_xmit()
1418 spin_unlock_irqrestore(&dev->txq.lock, flags); in usbnet_start_xmit()
1419 netdev_dbg(dev->net, "Delaying transmission for resumption\n"); in usbnet_start_xmit()
1425 case -EPIPE: in usbnet_start_xmit()
1428 usb_autopm_put_interface_async(dev->intf); in usbnet_start_xmit()
1431 usb_autopm_put_interface_async(dev->intf); in usbnet_start_xmit()
1432 netif_dbg(dev, tx_err, dev->net, in usbnet_start_xmit()
1437 __usbnet_queue_skb(&dev->txq, skb, tx_start); in usbnet_start_xmit()
1438 if (dev->txq.qlen >= TX_QLEN (dev)) in usbnet_start_xmit()
1441 spin_unlock_irqrestore (&dev->txq.lock, flags); in usbnet_start_xmit()
1444 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", retval); in usbnet_start_xmit()
1446 dev->net->stats.tx_dropped++; in usbnet_start_xmit()
1451 kfree(urb->sg); in usbnet_start_xmit()
1455 netif_dbg(dev, tx_queued, dev->net, in usbnet_start_xmit()
1456 "> tx, len %u, type 0x%x\n", length, skb->protocol); in usbnet_start_xmit()
1471 for (i = 0; i < 10 && dev->rxq.qlen < RX_QLEN(dev); i++) { in rx_alloc_submit()
1478 ret = -ENOMEM; in rx_alloc_submit()
1486 /*-------------------------------------------------------------------------*/
1496 while ((skb = skb_dequeue (&dev->done))) { in usbnet_bh()
1497 entry = (struct skb_data *) skb->cb; in usbnet_bh()
1498 switch (entry->state) { in usbnet_bh()
1500 entry->state = rx_cleanup; in usbnet_bh()
1504 kfree(entry->urb->sg); in usbnet_bh()
1507 usb_free_urb (entry->urb); in usbnet_bh()
1511 netdev_dbg(dev->net, "bogus skb state %d\n", entry->state); in usbnet_bh()
1516 clear_bit(EVENT_RX_KILL, &dev->flags); in usbnet_bh()
1521 if (waitqueue_active(&dev->wait)) { in usbnet_bh()
1522 if (dev->txq.qlen + dev->rxq.qlen + dev->done.qlen == 0) in usbnet_bh()
1523 wake_up_all(&dev->wait); in usbnet_bh()
1526 } else if (netif_running (dev->net) && in usbnet_bh()
1527 netif_device_present (dev->net) && in usbnet_bh()
1528 netif_carrier_ok(dev->net) && in usbnet_bh()
1529 !timer_pending(&dev->delay) && in usbnet_bh()
1530 !test_bit(EVENT_RX_PAUSED, &dev->flags) && in usbnet_bh()
1531 !test_bit(EVENT_RX_HALT, &dev->flags)) { in usbnet_bh()
1532 int temp = dev->rxq.qlen; in usbnet_bh()
1535 if (rx_alloc_submit(dev, GFP_ATOMIC) == -ENOLINK) in usbnet_bh()
1537 if (temp != dev->rxq.qlen) in usbnet_bh()
1538 netif_dbg(dev, link, dev->net, in usbnet_bh()
1539 "rxqlen %d --> %d\n", in usbnet_bh()
1540 temp, dev->rxq.qlen); in usbnet_bh()
1541 if (dev->rxq.qlen < RX_QLEN(dev)) in usbnet_bh()
1542 tasklet_schedule (&dev->bh); in usbnet_bh()
1544 if (dev->txq.qlen < TX_QLEN (dev)) in usbnet_bh()
1545 netif_wake_queue (dev->net); in usbnet_bh()
1557 /*-------------------------------------------------------------------------
1561 *-------------------------------------------------------------------------*/
1579 netif_info(dev, probe, dev->net, "unregister '%s' usb-%s-%s, %s\n", in usbnet_disconnect()
1580 intf->dev.driver->name, in usbnet_disconnect()
1581 xdev->bus->bus_name, xdev->devpath, in usbnet_disconnect()
1582 dev->driver_info->description); in usbnet_disconnect()
1584 net = dev->net; in usbnet_disconnect()
1587 while ((urb = usb_get_from_anchor(&dev->deferred))) { in usbnet_disconnect()
1588 dev_kfree_skb(urb->context); in usbnet_disconnect()
1589 kfree(urb->sg); in usbnet_disconnect()
1593 if (dev->driver_info->unbind) in usbnet_disconnect()
1594 dev->driver_info->unbind (dev, intf); in usbnet_disconnect()
1596 usb_kill_urb(dev->interrupt); in usbnet_disconnect()
1597 usb_free_urb(dev->interrupt); in usbnet_disconnect()
1598 kfree(dev->padding_pkt); in usbnet_disconnect()
1600 free_percpu(dev->stats64); in usbnet_disconnect()
1617 /*-------------------------------------------------------------------------*/
1639 struct usb_driver *driver = to_usb_driver(udev->dev.driver); in usbnet_probe()
1645 if (!driver->supports_autosuspend) { in usbnet_probe()
1646 driver->supports_autosuspend = 1; in usbnet_probe()
1647 pm_runtime_enable(&udev->dev); in usbnet_probe()
1650 name = udev->dev.driver->name; in usbnet_probe()
1651 info = (const struct driver_info *) prod->driver_info; in usbnet_probe()
1653 dev_dbg (&udev->dev, "blacklisted by %s\n", name); in usbnet_probe()
1654 return -ENODEV; in usbnet_probe()
1657 interface = udev->cur_altsetting; in usbnet_probe()
1659 status = -ENOMEM; in usbnet_probe()
1667 SET_NETDEV_DEV(net, &udev->dev); in usbnet_probe()
1670 dev->udev = xdev; in usbnet_probe()
1671 dev->intf = udev; in usbnet_probe()
1672 dev->driver_info = info; in usbnet_probe()
1673 dev->driver_name = name; in usbnet_probe()
1675 dev->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); in usbnet_probe()
1676 if (!dev->stats64) in usbnet_probe()
1679 dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV in usbnet_probe()
1681 init_waitqueue_head(&dev->wait); in usbnet_probe()
1682 skb_queue_head_init (&dev->rxq); in usbnet_probe()
1683 skb_queue_head_init (&dev->txq); in usbnet_probe()
1684 skb_queue_head_init (&dev->done); in usbnet_probe()
1685 skb_queue_head_init(&dev->rxq_pause); in usbnet_probe()
1686 dev->bh.func = usbnet_bh_tasklet; in usbnet_probe()
1687 dev->bh.data = (unsigned long)&dev->delay; in usbnet_probe()
1688 INIT_WORK (&dev->kevent, usbnet_deferred_kevent); in usbnet_probe()
1689 init_usb_anchor(&dev->deferred); in usbnet_probe()
1690 timer_setup(&dev->delay, usbnet_bh, 0); in usbnet_probe()
1691 mutex_init (&dev->phy_mutex); in usbnet_probe()
1692 mutex_init(&dev->interrupt_mutex); in usbnet_probe()
1693 dev->interrupt_count = 0; in usbnet_probe()
1695 dev->net = net; in usbnet_probe()
1696 strcpy (net->name, "usb%d"); in usbnet_probe()
1697 memcpy (net->dev_addr, node_id, sizeof node_id); in usbnet_probe()
1702 dev->hard_mtu = net->mtu + net->hard_header_len; in usbnet_probe()
1703 net->min_mtu = 0; in usbnet_probe()
1704 net->max_mtu = ETH_MAX_MTU; in usbnet_probe()
1706 net->netdev_ops = &usbnet_netdev_ops; in usbnet_probe()
1707 net->watchdog_timeo = TX_TIMEOUT_JIFFIES; in usbnet_probe()
1708 net->ethtool_ops = &usbnet_ethtool_ops; in usbnet_probe()
1710 // allow device-specific bind/init procedures in usbnet_probe()
1711 // NOTE net->name still not usable ... in usbnet_probe()
1712 if (info->bind) { in usbnet_probe()
1713 status = info->bind (dev, udev); in usbnet_probe()
1717 // heuristic: "usb%d" for links we know are two-host, in usbnet_probe()
1720 if ((dev->driver_info->flags & FLAG_ETHER) != 0 && in usbnet_probe()
1721 ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 || in usbnet_probe()
1722 (net->dev_addr [0] & 0x02) == 0)) in usbnet_probe()
1723 strcpy (net->name, "eth%d"); in usbnet_probe()
1725 if ((dev->driver_info->flags & FLAG_WLAN) != 0) in usbnet_probe()
1726 strcpy(net->name, "wlan%d"); in usbnet_probe()
1728 if ((dev->driver_info->flags & FLAG_WWAN) != 0) in usbnet_probe()
1729 strcpy(net->name, "wwan%d"); in usbnet_probe()
1732 if ((dev->driver_info->flags & FLAG_NOARP) != 0) in usbnet_probe()
1733 net->flags |= IFF_NOARP; in usbnet_probe()
1736 if (net->mtu > (dev->hard_mtu - net->hard_header_len)) in usbnet_probe()
1737 net->mtu = dev->hard_mtu - net->hard_header_len; in usbnet_probe()
1738 } else if (!info->in || !info->out) in usbnet_probe()
1742 info->in + USB_DIR_IN, info->out + USB_DIR_OUT, 0 in usbnet_probe()
1745 dev->in = usb_rcvbulkpipe (xdev, info->in); in usbnet_probe()
1746 dev->out = usb_sndbulkpipe (xdev, info->out); in usbnet_probe()
1747 if (!(info->flags & FLAG_NO_SETINT)) in usbnet_probe()
1749 interface->desc.bInterfaceNumber, in usbnet_probe()
1750 interface->desc.bAlternateSetting); in usbnet_probe()
1755 status = -EINVAL; in usbnet_probe()
1757 if (status >= 0 && dev->status) in usbnet_probe()
1762 if (!dev->rx_urb_size) in usbnet_probe()
1763 dev->rx_urb_size = dev->hard_mtu; in usbnet_probe()
1764 dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1); in usbnet_probe()
1765 if (dev->maxpacket == 0) { in usbnet_probe()
1767 status = -ENODEV; in usbnet_probe()
1772 if (ether_addr_equal(net->dev_addr, node_id)) in usbnet_probe()
1773 net->addr_assign_type = NET_ADDR_RANDOM; in usbnet_probe()
1775 if ((dev->driver_info->flags & FLAG_WLAN) != 0) in usbnet_probe()
1777 if ((dev->driver_info->flags & FLAG_WWAN) != 0) in usbnet_probe()
1783 if (dev->can_dma_sg && !(info->flags & FLAG_SEND_ZLP) && in usbnet_probe()
1784 !(info->flags & FLAG_MULTI_PACKET)) { in usbnet_probe()
1785 dev->padding_pkt = kzalloc(1, GFP_KERNEL); in usbnet_probe()
1786 if (!dev->padding_pkt) { in usbnet_probe()
1787 status = -ENOMEM; in usbnet_probe()
1795 netif_info(dev, probe, dev->net, in usbnet_probe()
1796 "register '%s' at usb-%s-%s, %s, %pM\n", in usbnet_probe()
1797 udev->dev.driver->name, in usbnet_probe()
1798 xdev->bus->bus_name, xdev->devpath, in usbnet_probe()
1799 dev->driver_info->description, in usbnet_probe()
1800 net->dev_addr); in usbnet_probe()
1807 if (dev->driver_info->flags & FLAG_LINK_INTR) in usbnet_probe()
1813 kfree(dev->padding_pkt); in usbnet_probe()
1815 usb_free_urb(dev->interrupt); in usbnet_probe()
1817 if (info->unbind) in usbnet_probe()
1818 info->unbind (dev, udev); in usbnet_probe()
1825 cancel_work_sync(&dev->kevent); in usbnet_probe()
1826 del_timer_sync(&dev->delay); in usbnet_probe()
1827 free_percpu(dev->stats64); in usbnet_probe()
1835 /*-------------------------------------------------------------------------*/
1846 if (!dev->suspend_count++) { in usbnet_suspend()
1847 spin_lock_irq(&dev->txq.lock); in usbnet_suspend()
1849 if (dev->txq.qlen && PMSG_IS_AUTO(message)) { in usbnet_suspend()
1850 dev->suspend_count--; in usbnet_suspend()
1851 spin_unlock_irq(&dev->txq.lock); in usbnet_suspend()
1852 return -EBUSY; in usbnet_suspend()
1854 set_bit(EVENT_DEV_ASLEEP, &dev->flags); in usbnet_suspend()
1855 spin_unlock_irq(&dev->txq.lock); in usbnet_suspend()
1861 netif_device_detach (dev->net); in usbnet_suspend()
1869 netif_device_attach (dev->net); in usbnet_suspend()
1882 if (!--dev->suspend_count) { in usbnet_resume()
1886 spin_lock_irq(&dev->txq.lock); in usbnet_resume()
1887 while ((res = usb_get_from_anchor(&dev->deferred))) { in usbnet_resume()
1889 skb = (struct sk_buff *)res->context; in usbnet_resume()
1893 kfree(res->sg); in usbnet_resume()
1895 usb_autopm_put_interface_async(dev->intf); in usbnet_resume()
1897 netif_trans_update(dev->net); in usbnet_resume()
1898 __skb_queue_tail(&dev->txq, skb); in usbnet_resume()
1903 clear_bit(EVENT_DEV_ASLEEP, &dev->flags); in usbnet_resume()
1904 spin_unlock_irq(&dev->txq.lock); in usbnet_resume()
1906 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) { in usbnet_resume()
1910 if (netif_device_present(dev->net) && in usbnet_resume()
1911 !timer_pending(&dev->delay) && in usbnet_resume()
1912 !test_bit(EVENT_RX_HALT, &dev->flags)) in usbnet_resume()
1915 if (!(dev->txq.qlen >= TX_QLEN(dev))) in usbnet_resume()
1916 netif_tx_wake_all_queues(dev->net); in usbnet_resume()
1917 tasklet_schedule (&dev->bh); in usbnet_resume()
1921 if (test_and_clear_bit(EVENT_DEVICE_REPORT_IDLE, &dev->flags)) in usbnet_resume()
1935 if (!test_and_set_bit(EVENT_DEVICE_REPORT_IDLE, &dev->flags)) { in usbnet_device_suggests_idle()
1936 dev->intf->needs_remote_wakeup = 1; in usbnet_device_suggests_idle()
1937 usb_autopm_put_interface_async(dev->intf); in usbnet_device_suggests_idle()
1947 dev->intf->needs_remote_wakeup = on; in usbnet_manage_power()
1956 netif_carrier_on(dev->net); in usbnet_link_change()
1958 netif_carrier_off(dev->net); in usbnet_link_change()
1967 /*-------------------------------------------------------------------------*/
1972 int err = -ENOMEM; in __usbnet_read_cmd()
1974 netdev_dbg(dev->net, "usbnet_read_cmd cmd=0x%02x reqtype=%02x" in __usbnet_read_cmd()
1984 err = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), in __usbnet_read_cmd()
1991 netdev_dbg(dev->net, in __usbnet_read_cmd()
2004 int err = -ENOMEM; in __usbnet_write_cmd()
2006 netdev_dbg(dev->net, "usbnet_write_cmd cmd=0x%02x reqtype=%02x" in __usbnet_write_cmd()
2017 err = -EINVAL; in __usbnet_write_cmd()
2022 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), in __usbnet_write_cmd()
2040 if (usb_autopm_get_interface(dev->intf) < 0) in usbnet_read_cmd()
2041 return -ENODEV; in usbnet_read_cmd()
2044 usb_autopm_put_interface(dev->intf); in usbnet_read_cmd()
2058 if (usb_autopm_get_interface(dev->intf) < 0) in usbnet_write_cmd()
2059 return -ENODEV; in usbnet_write_cmd()
2062 usb_autopm_put_interface(dev->intf); in usbnet_write_cmd()
2094 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; in usbnet_async_cmd_cb()
2095 int status = urb->status; in usbnet_async_cmd_cb()
2098 dev_dbg(&urb->dev->dev, "%s failed with %d", in usbnet_async_cmd_cb()
2114 int err = -ENOMEM; in usbnet_write_cmd_async()
2117 netdev_dbg(dev->net, "usbnet_write_cmd cmd=0x%02x reqtype=%02x" in usbnet_write_cmd_async()
2128 netdev_err(dev->net, "Error allocating buffer" in usbnet_write_cmd_async()
2138 req->bRequestType = reqtype; in usbnet_write_cmd_async()
2139 req->bRequest = cmd; in usbnet_write_cmd_async()
2140 req->wValue = cpu_to_le16(value); in usbnet_write_cmd_async()
2141 req->wIndex = cpu_to_le16(index); in usbnet_write_cmd_async()
2142 req->wLength = cpu_to_le16(size); in usbnet_write_cmd_async()
2144 usb_fill_control_urb(urb, dev->udev, in usbnet_write_cmd_async()
2145 usb_sndctrlpipe(dev->udev, 0), in usbnet_write_cmd_async()
2148 urb->transfer_flags |= URB_FREE_BUFFER; in usbnet_write_cmd_async()
2152 netdev_err(dev->net, "Error submitting the control" in usbnet_write_cmd_async()
2167 urb->transfer_flags = 0; in usbnet_write_cmd_async()
2175 /*-------------------------------------------------------------------------*/