#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
+#include <linux/ctype.h>
#include <linux/ethtool.h>
#include <linux/workqueue.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/usbnet.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/pm_runtime.h>
#define DRIVER_VERSION "22-Aug-2005"
/* take the first altsetting with in-bulk + out-bulk;
* remember any status endpoint, just in case;
- * ignore other endpoints and altsetttings.
+ * ignore other endpoints and altsettings.
*/
for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
struct usb_host_endpoint *e;
if (!alt || !in || !out)
return -EINVAL;
- if (alt->desc.bAlternateSetting != 0
- || !(dev->driver_info->flags & FLAG_NO_SETINT)) {
+ if (alt->desc.bAlternateSetting != 0 ||
+ !(dev->driver_info->flags & FLAG_NO_SETINT)) {
tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
alt->desc.bAlternateSetting);
if (tmp < 0)
}
EXPORT_SYMBOL_GPL(usbnet_get_endpoints);
+int usbnet_get_ethernet_addr(struct usbnet *dev, int iMACAddress)
+{
+ int tmp, i;
+ unsigned char buf [13];
+
+ tmp = usb_string(dev->udev, iMACAddress, buf, sizeof buf);
+ if (tmp != 12) {
+ dev_dbg(&dev->udev->dev,
+ "bad MAC string %d fetch, %d\n", iMACAddress, tmp);
+ if (tmp >= 0)
+ tmp = -EINVAL;
+ return tmp;
+ }
+ for (i = tmp = 0; i < 6; i++, tmp += 2)
+ dev->net->dev_addr [i] =
+ (hex_to_bin(buf[tmp]) << 4) + hex_to_bin(buf[tmp + 1]);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usbnet_get_ethernet_addr);
+
static void intr_complete (struct urb *urb);
static int init_status (struct usbnet *dev, struct usb_interface *intf)
{
int status;
+ if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
+ skb_queue_tail(&dev->rxq_pause, skb);
+ return;
+ }
+
skb->protocol = eth_type_trans (skb, dev->net);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += skb->len;
+ dev->net->stats.rx_packets++;
+ dev->net->stats.rx_bytes += skb->len;
- if (netif_msg_rx_status (dev))
- devdbg (dev, "< rx, len %zu, type 0x%x",
- skb->len + sizeof (struct ethhdr), skb->protocol);
+ netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
+ skb->len + sizeof (struct ethhdr), skb->protocol);
memset (skb->cb, 0, sizeof (struct skb_data));
+
+ if (skb_defer_rx_timestamp(skb))
+ return;
+
status = netif_rx (skb);
- if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
- devdbg (dev, "netif_rx status %d", status);
+ if (status != NET_RX_SUCCESS)
+ netif_dbg(dev, rx_err, dev->net,
+ "netif_rx status %d\n", status);
}
EXPORT_SYMBOL_GPL(usbnet_skb_return);
*
*-------------------------------------------------------------------------*/
-static int usbnet_change_mtu (struct net_device *net, int new_mtu)
+int usbnet_change_mtu (struct net_device *net, int new_mtu)
{
struct usbnet *dev = netdev_priv(net);
int ll_mtu = new_mtu + net->hard_header_len;
return 0;
}
-
-/*-------------------------------------------------------------------------*/
-
-static struct net_device_stats *usbnet_get_stats (struct net_device *net)
-{
- struct usbnet *dev = netdev_priv(net);
- return &dev->stats;
-}
+EXPORT_SYMBOL_GPL(usbnet_change_mtu);
/*-------------------------------------------------------------------------*/
{
set_bit (work, &dev->flags);
if (!schedule_work (&dev->kevent))
- deverr (dev, "kevent %d may have been dropped", work);
+ netdev_err(dev->net, "kevent %d may have been dropped\n", work);
else
- devdbg (dev, "kevent %d scheduled", work);
+ netdev_dbg(dev->net, "kevent %d scheduled\n", work);
}
EXPORT_SYMBOL_GPL(usbnet_defer_kevent);
static void rx_complete (struct urb *urb);
-static void rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
+static int rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
{
struct sk_buff *skb;
struct skb_data *entry;
size_t size = dev->rx_urb_size;
if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) {
- if (netif_msg_rx_err (dev))
- devdbg (dev, "no rx skb");
+ netif_dbg(dev, rx_err, dev->net, "no rx skb\n");
usbnet_defer_kevent (dev, EVENT_RX_MEMORY);
usb_free_urb (urb);
- return;
+ return -ENOMEM;
}
skb_reserve (skb, NET_IP_ALIGN);
spin_lock_irqsave (&dev->rxq.lock, lockflags);
- if (netif_running (dev->net)
- && netif_device_present (dev->net)
- && !test_bit (EVENT_RX_HALT, &dev->flags)) {
+ if (netif_running (dev->net) &&
+ netif_device_present (dev->net) &&
+ !test_bit (EVENT_RX_HALT, &dev->flags) &&
+ !test_bit (EVENT_DEV_ASLEEP, &dev->flags)) {
switch (retval = usb_submit_urb (urb, GFP_ATOMIC)) {
case -EPIPE:
usbnet_defer_kevent (dev, EVENT_RX_HALT);
usbnet_defer_kevent (dev, EVENT_RX_MEMORY);
break;
case -ENODEV:
- if (netif_msg_ifdown (dev))
- devdbg (dev, "device gone");
+ netif_dbg(dev, ifdown, dev->net, "device gone\n");
netif_device_detach (dev->net);
break;
+ case -EHOSTUNREACH:
+ retval = -ENOLINK;
+ break;
default:
- if (netif_msg_rx_err (dev))
- devdbg (dev, "rx submit, %d", retval);
+ netif_dbg(dev, rx_err, dev->net,
+ "rx submit, %d\n", retval);
tasklet_schedule (&dev->bh);
break;
case 0:
__skb_queue_tail (&dev->rxq, skb);
}
} else {
- if (netif_msg_ifdown (dev))
- devdbg (dev, "rx: stopped");
+ netif_dbg(dev, ifdown, dev->net, "rx: stopped\n");
retval = -ENOLINK;
}
spin_unlock_irqrestore (&dev->rxq.lock, lockflags);
dev_kfree_skb_any (skb);
usb_free_urb (urb);
}
+ return retval;
}
static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
{
- if (dev->driver_info->rx_fixup
- && !dev->driver_info->rx_fixup (dev, skb))
- goto error;
+ if (dev->driver_info->rx_fixup &&
+ !dev->driver_info->rx_fixup (dev, skb)) {
+ /* With RX_ASSEMBLE, rx_fixup() must update counters */
+ if (!(dev->driver_info->flags & FLAG_RX_ASSEMBLE))
+ dev->net->stats.rx_errors++;
+ goto done;
+ }
// else network stack removes extra byte if we forced a short packet
- if (skb->len)
- usbnet_skb_return (dev, skb);
- else {
- if (netif_msg_rx_err (dev))
- devdbg (dev, "drop");
-error:
- dev->stats.rx_errors++;
- skb_queue_tail (&dev->done, skb);
+ if (skb->len) {
+ /* all data was already cloned from skb inside the driver */
+ if (dev->driver_info->flags & FLAG_MULTI_PACKET)
+ dev_kfree_skb_any(skb);
+ else
+ usbnet_skb_return(dev, skb);
+ return;
}
+
+ netif_dbg(dev, rx_err, dev->net, "drop\n");
+ dev->net->stats.rx_errors++;
+done:
+ skb_queue_tail(&dev->done, skb);
}
/*-------------------------------------------------------------------------*/
case 0:
if (skb->len < dev->net->hard_header_len) {
entry->state = rx_cleanup;
- dev->stats.rx_errors++;
- dev->stats.rx_length_errors++;
- if (netif_msg_rx_err (dev))
- devdbg (dev, "rx length %d", skb->len);
+ dev->net->stats.rx_errors++;
+ dev->net->stats.rx_length_errors++;
+ netif_dbg(dev, rx_err, dev->net,
+ "rx length %d\n", skb->len);
}
break;
/* stalls need manual reset. this is rare ... except that
* when going through USB 2.0 TTs, unplug appears this way.
- * we avoid the highspeed version of the ETIMEOUT/EILSEQ
+ * we avoid the highspeed version of the ETIMEDOUT/EILSEQ
* storm, recovering as needed.
*/
case -EPIPE:
- dev->stats.rx_errors++;
+ dev->net->stats.rx_errors++;
usbnet_defer_kevent (dev, EVENT_RX_HALT);
// FALLTHROUGH
/* software-driven interface shutdown */
case -ECONNRESET: /* async unlink */
case -ESHUTDOWN: /* hardware gone */
- if (netif_msg_ifdown (dev))
- devdbg (dev, "rx shutdown, code %d", urb_status);
+ netif_dbg(dev, ifdown, dev->net,
+ "rx shutdown, code %d\n", urb_status);
goto block;
/* we get controller i/o faults during khubd disconnect() delays.
case -EPROTO:
case -ETIME:
case -EILSEQ:
- dev->stats.rx_errors++;
+ dev->net->stats.rx_errors++;
if (!timer_pending (&dev->delay)) {
mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES);
- if (netif_msg_link (dev))
- devdbg (dev, "rx throttle %d", urb_status);
+ netif_dbg(dev, link, dev->net,
+ "rx throttle %d\n", urb_status);
}
block:
entry->state = rx_cleanup;
/* data overrun ... flush fifo? */
case -EOVERFLOW:
- dev->stats.rx_over_errors++;
+ dev->net->stats.rx_over_errors++;
// FALLTHROUGH
default:
entry->state = rx_cleanup;
- dev->stats.rx_errors++;
- if (netif_msg_rx_err (dev))
- devdbg (dev, "rx status %d", urb_status);
+ dev->net->stats.rx_errors++;
+ netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status);
break;
}
defer_bh(dev, skb, &dev->rxq);
if (urb) {
- if (netif_running (dev->net)
- && !test_bit (EVENT_RX_HALT, &dev->flags)) {
+ if (netif_running (dev->net) &&
+ !test_bit (EVENT_RX_HALT, &dev->flags)) {
rx_submit (dev, urb, GFP_ATOMIC);
return;
}
usb_free_urb (urb);
}
- if (netif_msg_rx_err (dev))
- devdbg (dev, "no read resubmitted");
+ netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n");
}
static void intr_complete (struct urb *urb)
/* software-driven interface shutdown */
case -ENOENT: /* urb killed */
case -ESHUTDOWN: /* hardware gone */
- if (netif_msg_ifdown (dev))
- devdbg (dev, "intr shutdown, code %d", status);
+ netif_dbg(dev, ifdown, dev->net,
+ "intr shutdown, code %d\n", status);
return;
/* NOTE: not throttling like RX/TX, since this endpoint
* already polls infrequently
*/
default:
- devdbg (dev, "intr status %d", status);
+ netdev_dbg(dev->net, "intr status %d\n", status);
break;
}
memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
status = usb_submit_urb (urb, GFP_ATOMIC);
- if (status != 0 && netif_msg_timer (dev))
- deverr(dev, "intr resubmit --> %d", status);
+ if (status != 0)
+ netif_err(dev, timer, dev->net,
+ "intr resubmit --> %d\n", status);
+}
+
+/*-------------------------------------------------------------------------*/
+void usbnet_pause_rx(struct usbnet *dev)
+{
+ set_bit(EVENT_RX_PAUSED, &dev->flags);
+
+ netif_dbg(dev, rx_status, dev->net, "paused rx queue enabled\n");
+}
+EXPORT_SYMBOL_GPL(usbnet_pause_rx);
+
+void usbnet_resume_rx(struct usbnet *dev)
+{
+ struct sk_buff *skb;
+ int num = 0;
+
+ clear_bit(EVENT_RX_PAUSED, &dev->flags);
+
+ while ((skb = skb_dequeue(&dev->rxq_pause)) != NULL) {
+ usbnet_skb_return(dev, skb);
+ num++;
+ }
+
+ tasklet_schedule(&dev->bh);
+
+ netif_dbg(dev, rx_status, dev->net,
+ "paused rx queue disabled, %d skbs requeued\n", num);
+}
+EXPORT_SYMBOL_GPL(usbnet_resume_rx);
+
+void usbnet_purge_paused_rxq(struct usbnet *dev)
+{
+ skb_queue_purge(&dev->rxq_pause);
}
+EXPORT_SYMBOL_GPL(usbnet_purge_paused_rxq);
/*-------------------------------------------------------------------------*/
entry = (struct skb_data *) skb->cb;
urb = entry->urb;
+ spin_unlock_irqrestore(&q->lock, flags);
// during some PM-driven resume scenarios,
// these (async) unlinks complete immediately
retval = usb_unlink_urb (urb);
if (retval != -EINPROGRESS && retval != 0)
- devdbg (dev, "unlink urb err, %d", retval);
+ netdev_dbg(dev->net, "unlink urb err, %d\n", retval);
else
count++;
+ spin_lock_irqsave(&q->lock, flags);
}
spin_unlock_irqrestore (&q->lock, flags);
return count;
/*-------------------------------------------------------------------------*/
// precondition: never called in_interrupt
-
-static int usbnet_stop (struct net_device *net)
+static void usbnet_terminate_urbs(struct usbnet *dev)
{
- struct usbnet *dev = netdev_priv(net);
- int temp;
- DECLARE_WAIT_QUEUE_HEAD_ONSTACK (unlink_wakeup);
- DECLARE_WAITQUEUE (wait, current);
-
- netif_stop_queue (net);
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup);
+ DECLARE_WAITQUEUE(wait, current);
+ int temp;
- if (netif_msg_ifdown (dev))
- devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
- dev->stats.rx_packets, dev->stats.tx_packets,
- dev->stats.rx_errors, dev->stats.tx_errors
- );
-
- // ensure there are no more active urbs
- add_wait_queue (&unlink_wakeup, &wait);
+ /* ensure there are no more active urbs */
+ add_wait_queue(&unlink_wakeup, &wait);
+ set_current_state(TASK_UNINTERRUPTIBLE);
dev->wait = &unlink_wakeup;
- temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
+ temp = unlink_urbs(dev, &dev->txq) +
+ unlink_urbs(dev, &dev->rxq);
- // maybe wait for deletions to finish.
+ /* maybe wait for deletions to finish. */
while (!skb_queue_empty(&dev->rxq)
- && !skb_queue_empty(&dev->txq)
- && !skb_queue_empty(&dev->done)) {
- msleep(UNLINK_TIMEOUT_MS);
- if (netif_msg_ifdown (dev))
- devdbg (dev, "waited for %d urb completions", temp);
+ && !skb_queue_empty(&dev->txq)
+ && !skb_queue_empty(&dev->done)) {
+ schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS));
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ netif_dbg(dev, ifdown, dev->net,
+ "waited for %d urb completions\n", temp);
}
+ set_current_state(TASK_RUNNING);
dev->wait = NULL;
- remove_wait_queue (&unlink_wakeup, &wait);
+ remove_wait_queue(&unlink_wakeup, &wait);
+}
+
+int usbnet_stop (struct net_device *net)
+{
+ struct usbnet *dev = netdev_priv(net);
+ struct driver_info *info = dev->driver_info;
+ int retval;
+
+ clear_bit(EVENT_DEV_OPEN, &dev->flags);
+ netif_stop_queue (net);
+
+ netif_info(dev, ifdown, dev->net,
+ "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n",
+ net->stats.rx_packets, net->stats.tx_packets,
+ net->stats.rx_errors, net->stats.tx_errors);
+
+ /* allow minidriver to stop correctly (wireless devices to turn off
+ * radio etc) */
+ if (info->stop) {
+ retval = info->stop(dev);
+ if (retval < 0)
+ netif_info(dev, ifdown, dev->net,
+ "stop fail (%d) usbnet usb-%s-%s, %s\n",
+ retval,
+ dev->udev->bus->bus_name, dev->udev->devpath,
+ info->description);
+ }
+
+ if (!(info->flags & FLAG_AVOID_UNLINK_URBS))
+ usbnet_terminate_urbs(dev);
usb_kill_urb(dev->interrupt);
+ usbnet_purge_paused_rxq(dev);
+
/* deferred work (task, timer, softirq) must also stop.
* can't flush_scheduled_work() until we drop rtnl (later),
* else workers could deadlock; so make workers a NOP.
dev->flags = 0;
del_timer_sync (&dev->delay);
tasklet_kill (&dev->bh);
- usb_autopm_put_interface(dev->intf);
+ if (info->manage_power)
+ info->manage_power(dev, 0);
+ else
+ usb_autopm_put_interface(dev->intf);
return 0;
}
+EXPORT_SYMBOL_GPL(usbnet_stop);
/*-------------------------------------------------------------------------*/
// precondition: never called in_interrupt
-static int usbnet_open (struct net_device *net)
+int usbnet_open (struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
int retval;
struct driver_info *info = dev->driver_info;
if ((retval = usb_autopm_get_interface(dev->intf)) < 0) {
- if (netif_msg_ifup (dev))
- devinfo (dev,
- "resumption fail (%d) usbnet usb-%s-%s, %s",
- retval,
- dev->udev->bus->bus_name, dev->udev->devpath,
- info->description);
+ netif_info(dev, ifup, dev->net,
+ "resumption fail (%d) usbnet usb-%s-%s, %s\n",
+ retval,
+ dev->udev->bus->bus_name,
+ dev->udev->devpath,
+ info->description);
goto done_nopm;
}
// put into "known safe" state
if (info->reset && (retval = info->reset (dev)) < 0) {
- if (netif_msg_ifup (dev))
- devinfo (dev,
- "open reset fail (%d) usbnet usb-%s-%s, %s",
- retval,
- dev->udev->bus->bus_name, dev->udev->devpath,
- info->description);
+ netif_info(dev, ifup, dev->net,
+ "open reset fail (%d) usbnet usb-%s-%s, %s\n",
+ retval,
+ dev->udev->bus->bus_name,
+ dev->udev->devpath,
+ info->description);
goto done;
}
// insist peer be connected
if (info->check_connect && (retval = info->check_connect (dev)) < 0) {
- if (netif_msg_ifup (dev))
- devdbg (dev, "can't open; %d", retval);
+ netif_dbg(dev, ifup, dev->net, "can't open; %d\n", retval);
goto done;
}
if (dev->interrupt) {
retval = usb_submit_urb (dev->interrupt, GFP_KERNEL);
if (retval < 0) {
- if (netif_msg_ifup (dev))
- deverr (dev, "intr submit %d", retval);
+ netif_err(dev, ifup, dev->net,
+ "intr submit %d\n", retval);
goto done;
}
}
+ set_bit(EVENT_DEV_OPEN, &dev->flags);
netif_start_queue (net);
- if (netif_msg_ifup (dev)) {
- char *framing;
-
- if (dev->driver_info->flags & FLAG_FRAMING_NC)
- framing = "NetChip";
- else if (dev->driver_info->flags & FLAG_FRAMING_GL)
- framing = "GeneSys";
- else if (dev->driver_info->flags & FLAG_FRAMING_Z)
- framing = "Zaurus";
- else if (dev->driver_info->flags & FLAG_FRAMING_RN)
- framing = "RNDIS";
- else if (dev->driver_info->flags & FLAG_FRAMING_AX)
- framing = "ASIX";
- else
- framing = "simple";
-
- devinfo (dev, "open: enable queueing "
- "(rx %d, tx %d) mtu %d %s framing",
- (int)RX_QLEN (dev), (int)TX_QLEN (dev), dev->net->mtu,
- framing);
- }
+ netif_info(dev, ifup, dev->net,
+ "open: enable queueing (rx %d, tx %d) mtu %d %s framing\n",
+ (int)RX_QLEN(dev), (int)TX_QLEN(dev),
+ dev->net->mtu,
+ (dev->driver_info->flags & FLAG_FRAMING_NC) ? "NetChip" :
+ (dev->driver_info->flags & FLAG_FRAMING_GL) ? "GeneSys" :
+ (dev->driver_info->flags & FLAG_FRAMING_Z) ? "Zaurus" :
+ (dev->driver_info->flags & FLAG_FRAMING_RN) ? "RNDIS" :
+ (dev->driver_info->flags & FLAG_FRAMING_AX) ? "ASIX" :
+ "simple");
// delay posting reads until we're fully open
tasklet_schedule (&dev->bh);
+ if (info->manage_power) {
+ retval = info->manage_power(dev, 1);
+ if (retval < 0)
+ goto done;
+ usb_autopm_put_interface(dev->intf);
+ }
return retval;
+
done:
usb_autopm_put_interface(dev->intf);
done_nopm:
return retval;
}
+EXPORT_SYMBOL_GPL(usbnet_open);
/*-------------------------------------------------------------------------*/
EXPORT_SYMBOL_GPL(usbnet_set_msglevel);
/* drivers may override default ethtool_ops in their bind() routine */
-static struct ethtool_ops usbnet_ethtool_ops = {
+static const struct ethtool_ops usbnet_ethtool_ops = {
.get_settings = usbnet_get_settings,
.set_settings = usbnet_set_settings,
.get_link = usbnet_get_link,
/* usb_clear_halt() needs a thread context */
if (test_bit (EVENT_TX_HALT, &dev->flags)) {
unlink_urbs (dev, &dev->txq);
+ status = usb_autopm_get_interface(dev->intf);
+ if (status < 0)
+ goto fail_pipe;
status = usb_clear_halt (dev->udev, dev->out);
- if (status < 0
- && status != -EPIPE
- && status != -ESHUTDOWN) {
+ usb_autopm_put_interface(dev->intf);
+ if (status < 0 &&
+ status != -EPIPE &&
+ status != -ESHUTDOWN) {
if (netif_msg_tx_err (dev))
- deverr (dev, "can't clear tx halt, status %d",
- status);
+fail_pipe:
+ netdev_err(dev->net, "can't clear tx halt, status %d\n",
+ status);
} else {
clear_bit (EVENT_TX_HALT, &dev->flags);
if (status != -ESHUTDOWN)
}
if (test_bit (EVENT_RX_HALT, &dev->flags)) {
unlink_urbs (dev, &dev->rxq);
+ status = usb_autopm_get_interface(dev->intf);
+ if (status < 0)
+ goto fail_halt;
status = usb_clear_halt (dev->udev, dev->in);
- if (status < 0
- && status != -EPIPE
- && status != -ESHUTDOWN) {
+ usb_autopm_put_interface(dev->intf);
+ if (status < 0 &&
+ status != -EPIPE &&
+ status != -ESHUTDOWN) {
if (netif_msg_rx_err (dev))
- deverr (dev, "can't clear rx halt, status %d",
- status);
+fail_halt:
+ netdev_err(dev->net, "can't clear rx halt, status %d\n",
+ status);
} else {
clear_bit (EVENT_RX_HALT, &dev->flags);
tasklet_schedule (&dev->bh);
/* tasklet could resubmit itself forever if memory is tight */
if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
struct urb *urb = NULL;
+ int resched = 1;
if (netif_running (dev->net))
urb = usb_alloc_urb (0, GFP_KERNEL);
clear_bit (EVENT_RX_MEMORY, &dev->flags);
if (urb != NULL) {
clear_bit (EVENT_RX_MEMORY, &dev->flags);
- rx_submit (dev, urb, GFP_KERNEL);
- tasklet_schedule (&dev->bh);
+ status = usb_autopm_get_interface(dev->intf);
+ if (status < 0) {
+ usb_free_urb(urb);
+ goto fail_lowmem;
+ }
+ if (rx_submit (dev, urb, GFP_KERNEL) == -ENOLINK)
+ resched = 0;
+ usb_autopm_put_interface(dev->intf);
+fail_lowmem:
+ if (resched)
+ tasklet_schedule (&dev->bh);
}
}
int retval = 0;
clear_bit (EVENT_LINK_RESET, &dev->flags);
+ status = usb_autopm_get_interface(dev->intf);
+ if (status < 0)
+ goto skip_reset;
if(info->link_reset && (retval = info->link_reset(dev)) < 0) {
- devinfo(dev, "link reset failed (%d) usbnet usb-%s-%s, %s",
- retval,
- dev->udev->bus->bus_name, dev->udev->devpath,
- info->description);
+ usb_autopm_put_interface(dev->intf);
+skip_reset:
+ netdev_info(dev->net, "link reset failed (%d) usbnet usb-%s-%s, %s\n",
+ retval,
+ dev->udev->bus->bus_name,
+ dev->udev->devpath,
+ info->description);
+ } else {
+ usb_autopm_put_interface(dev->intf);
}
}
if (dev->flags)
- devdbg (dev, "kevent done, flags = 0x%lx",
- dev->flags);
+ netdev_dbg(dev->net, "kevent done, flags = 0x%lx\n", dev->flags);
}
/*-------------------------------------------------------------------------*/
struct usbnet *dev = entry->dev;
if (urb->status == 0) {
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += entry->length;
+ if (!(dev->driver_info->flags & FLAG_MULTI_PACKET))
+ dev->net->stats.tx_packets++;
+ dev->net->stats.tx_bytes += entry->length;
} else {
- dev->stats.tx_errors++;
+ dev->net->stats.tx_errors++;
switch (urb->status) {
case -EPIPE:
case -EPROTO:
case -ETIME:
case -EILSEQ:
+ usb_mark_last_busy(dev->udev);
if (!timer_pending (&dev->delay)) {
mod_timer (&dev->delay,
jiffies + THROTTLE_JIFFIES);
- if (netif_msg_link (dev))
- devdbg (dev, "tx throttle %d",
- urb->status);
+ netif_dbg(dev, link, dev->net,
+ "tx throttle %d\n", urb->status);
}
netif_stop_queue (dev->net);
break;
default:
- if (netif_msg_tx_err (dev))
- devdbg (dev, "tx err %d", entry->urb->status);
+ netif_dbg(dev, tx_err, dev->net,
+ "tx err %d\n", entry->urb->status);
break;
}
}
+ usb_autopm_put_interface_async(dev->intf);
urb->dev = NULL;
entry->state = tx_done;
defer_bh(dev, skb, &dev->txq);
/*-------------------------------------------------------------------------*/
-static void usbnet_tx_timeout (struct net_device *net)
+void usbnet_tx_timeout (struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
// FIXME: device recovery -- reset?
}
+EXPORT_SYMBOL_GPL(usbnet_tx_timeout);
/*-------------------------------------------------------------------------*/
-static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
+netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
+ struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
int length;
- int retval = NET_XMIT_SUCCESS;
struct urb *urb = NULL;
struct skb_data *entry;
struct driver_info *info = dev->driver_info;
unsigned long flags;
+ int retval;
+
+ if (skb)
+ skb_tx_timestamp(skb);
// some devices want funky USB-level framing, for
// win32 driver (usually) and/or hardware quirks
if (info->tx_fixup) {
skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
if (!skb) {
- if (netif_msg_tx_err (dev))
- devdbg (dev, "can't tx_fixup skb");
- goto drop;
+ if (netif_msg_tx_err(dev)) {
+ netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n");
+ goto drop;
+ } else {
+ /* cdc_ncm collected packet; waits for more */
+ goto not_drop;
+ }
}
}
length = skb->len;
if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) {
- if (netif_msg_tx_err (dev))
- devdbg (dev, "no urb");
+ netif_dbg(dev, tx_err, dev->net, "no urb\n");
goto drop;
}
/* don't assume the hardware handles USB_ZERO_PACKET
* NOTE: strictly conforming cdc-ether devices should expect
* the ZLP here, but ignore the one-byte packet.
+ * NOTE2: CDC NCM specification is different from CDC ECM when
+ * handling ZLP/short packets, so cdc_ncm driver will make short
+ * packet itself if needed.
*/
- if ((length % dev->maxpacket) == 0) {
- urb->transfer_buffer_length++;
- if (skb_tailroom(skb)) {
- skb->data[skb->len] = 0;
- __skb_put(skb, 1);
- }
+ if (length % dev->maxpacket == 0) {
+ if (!(info->flags & FLAG_SEND_ZLP)) {
+ if (!(info->flags & FLAG_MULTI_PACKET)) {
+ urb->transfer_buffer_length++;
+ if (skb_tailroom(skb)) {
+ skb->data[skb->len] = 0;
+ __skb_put(skb, 1);
+ }
+ }
+ } else
+ urb->transfer_flags |= URB_ZERO_PACKET;
}
- spin_lock_irqsave (&dev->txq.lock, flags);
+ spin_lock_irqsave(&dev->txq.lock, flags);
+ retval = usb_autopm_get_interface_async(dev->intf);
+ if (retval < 0) {
+ spin_unlock_irqrestore(&dev->txq.lock, flags);
+ goto drop;
+ }
+
+#ifdef CONFIG_PM
+ /* if this triggers the device is still a sleep */
+ if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
+ /* transmission will be done in resume */
+ usb_anchor_urb(urb, &dev->deferred);
+ /* no use to process more packets */
+ netif_stop_queue(net);
+ spin_unlock_irqrestore(&dev->txq.lock, flags);
+ netdev_dbg(dev->net, "Delaying transmission for resumption\n");
+ goto deferred;
+ }
+#endif
switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
case -EPIPE:
netif_stop_queue (net);
usbnet_defer_kevent (dev, EVENT_TX_HALT);
+ usb_autopm_put_interface_async(dev->intf);
break;
default:
- if (netif_msg_tx_err (dev))
- devdbg (dev, "tx: submit urb err %d", retval);
+ usb_autopm_put_interface_async(dev->intf);
+ netif_dbg(dev, tx_err, dev->net,
+ "tx: submit urb err %d\n", retval);
break;
case 0:
net->trans_start = jiffies;
spin_unlock_irqrestore (&dev->txq.lock, flags);
if (retval) {
- if (netif_msg_tx_err (dev))
- devdbg (dev, "drop, code %d", retval);
+ netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", retval);
drop:
- retval = NET_XMIT_SUCCESS;
- dev->stats.tx_dropped++;
+ dev->net->stats.tx_dropped++;
+not_drop:
if (skb)
dev_kfree_skb_any (skb);
usb_free_urb (urb);
- } else if (netif_msg_tx_queued (dev)) {
- devdbg (dev, "> tx, len %d, type 0x%x",
- length, skb->protocol);
- }
- return retval;
+ } else
+ netif_dbg(dev, tx_queued, dev->net,
+ "> tx, len %d, type 0x%x\n", length, skb->protocol);
+#ifdef CONFIG_PM
+deferred:
+#endif
+ return NETDEV_TX_OK;
}
-
+EXPORT_SYMBOL_GPL(usbnet_start_xmit);
/*-------------------------------------------------------------------------*/
dev_kfree_skb (skb);
continue;
default:
- devdbg (dev, "bogus skb state %d", entry->state);
+ netdev_dbg(dev->net, "bogus skb state %d\n", entry->state);
}
}
}
// or are we maybe short a few urbs?
- } else if (netif_running (dev->net)
- && netif_device_present (dev->net)
- && !timer_pending (&dev->delay)
- && !test_bit (EVENT_RX_HALT, &dev->flags)) {
+ } else if (netif_running (dev->net) &&
+ netif_device_present (dev->net) &&
+ !timer_pending (&dev->delay) &&
+ !test_bit (EVENT_RX_HALT, &dev->flags)) {
int temp = dev->rxq.qlen;
int qlen = RX_QLEN (dev);
// don't refill the queue all at once
for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
urb = usb_alloc_urb (0, GFP_ATOMIC);
- if (urb != NULL)
- rx_submit (dev, urb, GFP_ATOMIC);
+ if (urb != NULL) {
+ if (rx_submit (dev, urb, GFP_ATOMIC) ==
+ -ENOLINK)
+ return;
+ }
}
- if (temp != dev->rxq.qlen && netif_msg_link (dev))
- devdbg (dev, "rxqlen %d --> %d",
- temp, dev->rxq.qlen);
+ if (temp != dev->rxq.qlen)
+ netif_dbg(dev, link, dev->net,
+ "rxqlen %d --> %d\n",
+ temp, dev->rxq.qlen);
if (dev->rxq.qlen < qlen)
tasklet_schedule (&dev->bh);
}
}
-\f
/*-------------------------------------------------------------------------
*
* USB Device Driver support
xdev = interface_to_usbdev (intf);
- if (netif_msg_probe (dev))
- devinfo (dev, "unregister '%s' usb-%s-%s, %s",
- intf->dev.driver->name,
- xdev->bus->bus_name, xdev->devpath,
- dev->driver_info->description);
+ netif_info(dev, probe, dev->net, "unregister '%s' usb-%s-%s, %s\n",
+ intf->dev.driver->name,
+ xdev->bus->bus_name, xdev->devpath,
+ dev->driver_info->description);
net = dev->net;
unregister_netdev (net);
- /* we don't hold rtnl here ... */
- flush_scheduled_work ();
+ cancel_work_sync(&dev->kevent);
if (dev->driver_info->unbind)
dev->driver_info->unbind (dev, intf);
+ usb_kill_urb(dev->interrupt);
+ usb_free_urb(dev->interrupt);
+
free_netdev(net);
usb_put_dev (xdev);
}
EXPORT_SYMBOL_GPL(usbnet_disconnect);
+static const struct net_device_ops usbnet_netdev_ops = {
+ .ndo_open = usbnet_open,
+ .ndo_stop = usbnet_stop,
+ .ndo_start_xmit = usbnet_start_xmit,
+ .ndo_tx_timeout = usbnet_tx_timeout,
+ .ndo_change_mtu = usbnet_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
/*-------------------------------------------------------------------------*/
// precondition: never called in_interrupt
+static struct device_type wlan_type = {
+ .name = "wlan",
+};
+
+static struct device_type wwan_type = {
+ .name = "wwan",
+};
+
int
usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
{
struct usb_device *xdev;
int status;
const char *name;
+ struct usb_driver *driver = to_usb_driver(udev->dev.driver);
+
+ /* usbnet already took usb runtime pm, so have to enable the feature
+ * for usb interface, otherwise usb_autopm_get_interface may return
+ * failure if USB_SUSPEND(RUNTIME_PM) is enabled.
+ */
+ if (!driver->supports_autosuspend) {
+ driver->supports_autosuspend = 1;
+ pm_runtime_enable(&udev->dev);
+ }
name = udev->dev.driver->name;
info = (struct driver_info *) prod->driver_info;
goto out;
}
+ /* netdev_printk() needs this so do it as early as possible */
+ SET_NETDEV_DEV(net, &udev->dev);
+
dev = netdev_priv(net);
dev->udev = xdev;
dev->intf = udev;
skb_queue_head_init (&dev->rxq);
skb_queue_head_init (&dev->txq);
skb_queue_head_init (&dev->done);
+ skb_queue_head_init(&dev->rxq_pause);
dev->bh.func = usbnet_bh;
dev->bh.data = (unsigned long) dev;
INIT_WORK (&dev->kevent, kevent);
+ init_usb_anchor(&dev->deferred);
dev->delay.function = usbnet_bh;
dev->delay.data = (unsigned long) dev;
init_timer (&dev->delay);
#if 0
// dma_supported() is deeply broken on almost all architectures
// possible with some EHCI controllers
- if (dma_supported (&udev->dev, DMA_64BIT_MASK))
+ if (dma_supported (&udev->dev, DMA_BIT_MASK(64)))
net->features |= NETIF_F_HIGHDMA;
#endif
- net->change_mtu = usbnet_change_mtu;
- net->get_stats = usbnet_get_stats;
- net->hard_start_xmit = usbnet_start_xmit;
- net->open = usbnet_open;
- net->stop = usbnet_stop;
+ net->netdev_ops = &usbnet_netdev_ops;
net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
- net->tx_timeout = usbnet_tx_timeout;
net->ethtool_ops = &usbnet_ethtool_ops;
// allow device-specific bind/init procedures
// heuristic: "usb%d" for links we know are two-host,
// else "eth%d" when there's reasonable doubt. userspace
// can rename the link if it knows better.
- if ((dev->driver_info->flags & FLAG_ETHER) != 0
- && (net->dev_addr [0] & 0x02) == 0)
+ if ((dev->driver_info->flags & FLAG_ETHER) != 0 &&
+ ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
+ (net->dev_addr [0] & 0x02) == 0))
strcpy (net->name, "eth%d");
/* WLAN devices should always be named "wlan%d" */
if ((dev->driver_info->flags & FLAG_WLAN) != 0)
strcpy(net->name, "wlan%d");
+ /* WWAN devices should always be named "wwan%d" */
+ if ((dev->driver_info->flags & FLAG_WWAN) != 0)
+ strcpy(net->name, "wwan%d");
/* maybe the remote can't receive an Ethernet MTU */
if (net->mtu > (dev->hard_mtu - net->hard_header_len))
dev->rx_urb_size = dev->hard_mtu;
dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
- SET_NETDEV_DEV(net, &udev->dev);
+ if ((dev->driver_info->flags & FLAG_WLAN) != 0)
+ SET_NETDEV_DEVTYPE(net, &wlan_type);
+ if ((dev->driver_info->flags & FLAG_WWAN) != 0)
+ SET_NETDEV_DEVTYPE(net, &wwan_type);
+
status = register_netdev (net);
if (status)
goto out3;
- if (netif_msg_probe (dev))
- devinfo (dev, "register '%s' at usb-%s-%s, %s, %pM",
- udev->dev.driver->name,
- xdev->bus->bus_name, xdev->devpath,
- dev->driver_info->description,
- net->dev_addr);
+ netif_info(dev, probe, dev->net,
+ "register '%s' at usb-%s-%s, %s, %pM\n",
+ udev->dev.driver->name,
+ xdev->bus->bus_name, xdev->devpath,
+ dev->driver_info->description,
+ net->dev_addr);
// ok, it's ready to go.
usb_set_intfdata (udev, dev);
- // start as if the link is up
netif_device_attach (net);
+ if (dev->driver_info->flags & FLAG_LINK_INTR)
+ netif_carrier_off(net);
+
return 0;
out3:
struct usbnet *dev = usb_get_intfdata(intf);
if (!dev->suspend_count++) {
+ spin_lock_irq(&dev->txq.lock);
+ /* don't autosuspend while transmitting */
+ if (dev->txq.qlen && PMSG_IS_AUTO(message)) {
+ spin_unlock_irq(&dev->txq.lock);
+ return -EBUSY;
+ } else {
+ set_bit(EVENT_DEV_ASLEEP, &dev->flags);
+ spin_unlock_irq(&dev->txq.lock);
+ }
/*
* accelerate emptying of the rx and queues, to avoid
* having everything error out.
*/
netif_device_detach (dev->net);
- (void) unlink_urbs (dev, &dev->rxq);
- (void) unlink_urbs (dev, &dev->txq);
+ usbnet_terminate_urbs(dev);
+ usb_kill_urb(dev->interrupt);
+
/*
* reattach so runtime management can use and
* wake the device
int usbnet_resume (struct usb_interface *intf)
{
struct usbnet *dev = usb_get_intfdata(intf);
+ struct sk_buff *skb;
+ struct urb *res;
+ int retval;
+
+ if (!--dev->suspend_count) {
+ /* resume interrupt URBs */
+ if (dev->interrupt && test_bit(EVENT_DEV_OPEN, &dev->flags))
+ usb_submit_urb(dev->interrupt, GFP_NOIO);
+
+ spin_lock_irq(&dev->txq.lock);
+ while ((res = usb_get_from_anchor(&dev->deferred))) {
+
+ skb = (struct sk_buff *)res->context;
+ retval = usb_submit_urb(res, GFP_ATOMIC);
+ if (retval < 0) {
+ dev_kfree_skb_any(skb);
+ usb_free_urb(res);
+ usb_autopm_put_interface_async(dev->intf);
+ } else {
+ dev->net->trans_start = jiffies;
+ __skb_queue_tail(&dev->txq, skb);
+ }
+ }
- if (!--dev->suspend_count)
- tasklet_schedule (&dev->bh);
+ smp_mb();
+ clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
+ spin_unlock_irq(&dev->txq.lock);
+ if (test_bit(EVENT_DEV_OPEN, &dev->flags)) {
+ if (!(dev->txq.qlen >= TX_QLEN(dev)))
+ netif_start_queue(dev->net);
+ tasklet_schedule (&dev->bh);
+ }
+ }
return 0;
}
EXPORT_SYMBOL_GPL(usbnet_resume);
static int __init usbnet_init(void)
{
- /* compiler should optimize this out */
- BUILD_BUG_ON (sizeof (((struct sk_buff *)0)->cb)
- < sizeof (struct skb_data));
+ /* Compiler should optimize this out. */
+ BUILD_BUG_ON(
+ FIELD_SIZEOF(struct sk_buff, cb) < sizeof(struct skb_data));
random_ether_addr(node_id);
return 0;
projects / linux-flexiantxendom0-3.2.10.git / blobdiff