DEFINE_PER_CPU(struct softnet_data, softnet_data);
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#ifdef CONFIG_LOCKDEP
/*
* register_netdevice() inits txq->_xmit_lock and sets lockdep class
* according to dev->type
"_xmit_NONE"};
static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
+static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)];
static inline unsigned short netdev_lock_pos(unsigned short dev_type)
{
return ARRAY_SIZE(netdev_lock_type) - 1;
}
-static inline void netdev_set_lockdep_class(spinlock_t *lock,
- unsigned short dev_type)
+static inline void netdev_set_xmit_lockdep_class(spinlock_t *lock,
+ unsigned short dev_type)
{
int i;
lockdep_set_class_and_name(lock, &netdev_xmit_lock_key[i],
netdev_lock_name[i]);
}
+
+static inline void netdev_set_addr_lockdep_class(struct net_device *dev)
+{
+ int i;
+
+ i = netdev_lock_pos(dev->type);
+ lockdep_set_class_and_name(&dev->addr_list_lock,
+ &netdev_addr_lock_key[i],
+ netdev_lock_name[i]);
+}
#else
-static inline void netdev_set_lockdep_class(spinlock_t *lock,
- unsigned short dev_type)
+static inline void netdev_set_xmit_lockdep_class(spinlock_t *lock,
+ unsigned short dev_type)
+{
+}
+static inline void netdev_set_addr_lockdep_class(struct net_device *dev)
{
}
#endif
void __netif_schedule(struct Qdisc *q)
{
- if (WARN_ON_ONCE(q == &noop_qdisc))
- return;
-
if (!test_and_set_bit(__QDISC_STATE_SCHED, &q->state)) {
struct softnet_data *sd;
unsigned long flags;
return 0;
}
-/**
- * dev_queue_xmit - transmit a buffer
- * @skb: buffer to transmit
- *
- * Queue a buffer for transmission to a network device. The caller must
- * have set the device and priority and built the buffer before calling
- * this function. The function can be called from an interrupt.
- *
- * A negative errno code is returned on a failure. A success does not
- * guarantee the frame will be transmitted as it may be dropped due
- * to congestion or traffic shaping.
- *
- * -----------------------------------------------------------------------------------
- * I notice this method can also return errors from the queue disciplines,
- * including NET_XMIT_DROP, which is a positive value. So, errors can also
- * be positive.
- *
- * Regardless of the return value, the skb is consumed, so it is currently
- * difficult to retry a send to this method. (You can bump the ref count
- * before sending to hold a reference for retry if you are careful.)
- *
- * When calling this method, interrupts MUST be enabled. This is because
- * the BH enable code must have IRQs enabled so that it will not deadlock.
- * --BLG
- */
-
static u32 simple_tx_hashrnd;
static int simple_tx_hashrnd_initialized = 0;
return netdev_get_tx_queue(dev, queue_index);
}
+/**
+ * dev_queue_xmit - transmit a buffer
+ * @skb: buffer to transmit
+ *
+ * Queue a buffer for transmission to a network device. The caller must
+ * have set the device and priority and built the buffer before calling
+ * this function. The function can be called from an interrupt.
+ *
+ * A negative errno code is returned on a failure. A success does not
+ * guarantee the frame will be transmitted as it may be dropped due
+ * to congestion or traffic shaping.
+ *
+ * -----------------------------------------------------------------------------------
+ * I notice this method can also return errors from the queue disciplines,
+ * including NET_XMIT_DROP, which is a positive value. So, errors can also
+ * be positive.
+ *
+ * Regardless of the return value, the skb is consumed, so it is currently
+ * difficult to retry a send to this method. (You can bump the ref count
+ * before sending to hold a reference for retry if you are careful.)
+ *
+ * When calling this method, interrupts MUST be enabled. This is because
+ * the BH enable code must have IRQs enabled so that it will not deadlock.
+ * --BLG
+ */
int dev_queue_xmit(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
*/
if (!cpus_empty(net_dma.channel_mask)) {
int chan_idx;
- for_each_cpu_mask(chan_idx, net_dma.channel_mask) {
+ for_each_cpu_mask_nr(chan_idx, net_dma.channel_mask) {
struct dma_chan *chan = net_dma.channels[chan_idx];
if (chan)
dma_async_memcpy_issue_pending(chan);
void *_unused)
{
spin_lock_init(&dev_queue->_xmit_lock);
- netdev_set_lockdep_class(&dev_queue->_xmit_lock, dev->type);
+ netdev_set_xmit_lockdep_class(&dev_queue->_xmit_lock, dev->type);
dev_queue->xmit_lock_owner = -1;
}
net = dev_net(dev);
spin_lock_init(&dev->addr_list_lock);
+ netdev_set_addr_lockdep_class(dev);
netdev_init_queue_locks(dev);
dev->iflink = -1;
{
struct netdev_queue *tx;
struct net_device *dev;
- int alloc_size;
+ size_t alloc_size;
void *p;
BUG_ON(strlen(name) >= sizeof(dev->name));
return NULL;
}
- tx = kzalloc(sizeof(struct netdev_queue) * queue_count, GFP_KERNEL);
+ tx = kcalloc(queue_count, sizeof(struct netdev_queue), GFP_KERNEL);
if (!tx) {
printk(KERN_ERR "alloc_netdev: Unable to allocate "
"tx qdiscs.\n");
i = 0;
cpu = first_cpu(cpu_online_map);
- for_each_cpu_mask(chan_idx, net_dma->channel_mask) {
+ for_each_cpu_mask_nr(chan_idx, net_dma->channel_mask) {
chan = net_dma->channels[chan_idx];
n = ((num_online_cpus() / cpus_weight(net_dma->channel_mask))
return -ENOMEM;
}
+char *netdev_drivername(struct net_device *dev, char *buffer, int len)
+{
+ struct device_driver *driver;
+ struct device *parent;
+
+ if (len <= 0 || !buffer)
+ return buffer;
+ buffer[0] = 0;
+
+ parent = dev->dev.parent;
+
+ if (!parent)
+ return buffer;
+
+ driver = parent->driver;
+ if (driver && driver->name)
+ strlcpy(buffer, driver->name, len);
+ return buffer;
+}
+
static void __net_exit netdev_exit(struct net *net)
{
kfree(net->dev_name_head);
git.openpandora.org / pandora-kernel.git / blobdiff