extern void __napi_schedule(struct napi_struct *n);
-static inline int napi_disable_pending(struct napi_struct *n)
+static inline bool napi_disable_pending(struct napi_struct *n)
{
return test_bit(NAPI_STATE_DISABLE, &n->state);
}
* insure only one NAPI poll instance runs. We also make
* sure there is no pending NAPI disable.
*/
-static inline int napi_schedule_prep(struct napi_struct *n)
+static inline bool napi_schedule_prep(struct napi_struct *n)
{
return !napi_disable_pending(n) &&
!test_and_set_bit(NAPI_STATE_SCHED, &n->state);
}
/* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
-static inline int napi_reschedule(struct napi_struct *napi)
+static inline bool napi_reschedule(struct napi_struct *napi)
{
if (napi_schedule_prep(napi)) {
__napi_schedule(napi);
- return 1;
+ return true;
}
- return 0;
+ return false;
}
/**
const struct header_ops *header_ops;
unsigned int flags; /* interface flags (a la BSD) */
- unsigned int priv_flags; /* Like 'flags' but invisible to userspace. */
+ unsigned int priv_flags; /* Like 'flags' but invisible to userspace.
+ * See if.h for definitions. */
unsigned short gflags;
unsigned short padded; /* How much padding added by alloc_netdev() */
}
}
-static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
+static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
{
return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state);
}
*
* Test if transmit queue on device is currently unable to send.
*/
-static inline int netif_queue_stopped(const struct net_device *dev)
+static inline bool netif_queue_stopped(const struct net_device *dev)
{
return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
}
-static inline int netif_xmit_stopped(const struct netdev_queue *dev_queue)
+static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue)
{
return dev_queue->state & QUEUE_STATE_ANY_XOFF;
}
-static inline int netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue)
+static inline bool netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue)
{
return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN;
}
{
#ifdef CONFIG_BQL
dql_queued(&dev_queue->dql, bytes);
- if (unlikely(dql_avail(&dev_queue->dql) < 0)) {
- set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state);
- if (unlikely(dql_avail(&dev_queue->dql) >= 0))
- clear_bit(__QUEUE_STATE_STACK_XOFF,
- &dev_queue->state);
- }
+
+ if (likely(dql_avail(&dev_queue->dql) >= 0))
+ return;
+
+ set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state);
+
+ /*
+ * The XOFF flag must be set before checking the dql_avail below,
+ * because in netdev_tx_completed_queue we update the dql_completed
+ * before checking the XOFF flag.
+ */
+ smp_mb();
+
+ /* check again in case another CPU has just made room avail */
+ if (unlikely(dql_avail(&dev_queue->dql) >= 0))
+ clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state);
#endif
}
unsigned pkts, unsigned bytes)
{
#ifdef CONFIG_BQL
- if (likely(bytes)) {
- dql_completed(&dev_queue->dql, bytes);
- if (unlikely(test_bit(__QUEUE_STATE_STACK_XOFF,
- &dev_queue->state) &&
- dql_avail(&dev_queue->dql) >= 0)) {
- if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF,
- &dev_queue->state))
- netif_schedule_queue(dev_queue);
- }
- }
+ if (unlikely(!bytes))
+ return;
+
+ dql_completed(&dev_queue->dql, bytes);
+
+ /*
+ * Without the memory barrier there is a small possiblity that
+ * netdev_tx_sent_queue will miss the update and cause the queue to
+ * be stopped forever
+ */
+ smp_mb();
+
+ if (dql_avail(&dev_queue->dql) < 0)
+ return;
+
+ if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state))
+ netif_schedule_queue(dev_queue);
#endif
}
static inline void netdev_tx_reset_queue(struct netdev_queue *q)
{
#ifdef CONFIG_BQL
+ clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state);
dql_reset(&q->dql);
#endif
}
*
* Test if the device has been brought up.
*/
-static inline int netif_running(const struct net_device *dev)
+static inline bool netif_running(const struct net_device *dev)
{
return test_bit(__LINK_STATE_START, &dev->state);
}
*
* Check individual transmit queue of a device with multiple transmit queues.
*/
-static inline int __netif_subqueue_stopped(const struct net_device *dev,
- u16 queue_index)
+static inline bool __netif_subqueue_stopped(const struct net_device *dev,
+ u16 queue_index)
{
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
return netif_tx_queue_stopped(txq);
}
-static inline int netif_subqueue_stopped(const struct net_device *dev,
- struct sk_buff *skb)
+static inline bool netif_subqueue_stopped(const struct net_device *dev,
+ struct sk_buff *skb)
{
return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
}
*
* Check if device has multiple transmit queues
*/
-static inline int netif_is_multiqueue(const struct net_device *dev)
+static inline bool netif_is_multiqueue(const struct net_device *dev)
{
return dev->num_tx_queues > 1;
}
void *rx_handler_data);
extern void netdev_rx_handler_unregister(struct net_device *dev);
-extern int dev_valid_name(const char *name);
+extern bool dev_valid_name(const char *name);
extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
extern int dev_ethtool(struct net *net, struct ifreq *);
extern unsigned dev_get_flags(const struct net_device *);
*
* Check if carrier is present on device
*/
-static inline int netif_carrier_ok(const struct net_device *dev)
+static inline bool netif_carrier_ok(const struct net_device *dev)
{
return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
}
*
* Check if carrier is present on device
*/
-static inline int netif_dormant(const struct net_device *dev)
+static inline bool netif_dormant(const struct net_device *dev)
{
return test_bit(__LINK_STATE_DORMANT, &dev->state);
}
*
* Check if carrier is operational
*/
-static inline int netif_oper_up(const struct net_device *dev)
+static inline bool netif_oper_up(const struct net_device *dev)
{
return (dev->operstate == IF_OPER_UP ||
dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
*
* Check if device has not been removed from system.
*/
-static inline int netif_device_present(struct net_device *dev)
+static inline bool netif_device_present(struct net_device *dev)
{
return test_bit(__LINK_STATE_PRESENT, &dev->state);
}
txq->xmit_lock_owner = smp_processor_id();
}
-static inline int __netif_tx_trylock(struct netdev_queue *txq)
+static inline bool __netif_tx_trylock(struct netdev_queue *txq)
{
- int ok = spin_trylock(&txq->_xmit_lock);
+ bool ok = spin_trylock(&txq->_xmit_lock);
if (likely(ok))
txq->xmit_lock_owner = smp_processor_id();
return ok;
extern void dev_mcast_init(void);
extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
struct rtnl_link_stats64 *storage);
+extern void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
+ const struct net_device_stats *netdev_stats);
extern int netdev_max_backlog;
extern int netdev_tstamp_prequeue;
netdev_features_t netif_skb_features(struct sk_buff *skb);
-static inline int net_gso_ok(netdev_features_t features, int gso_type)
+static inline bool net_gso_ok(netdev_features_t features, int gso_type)
{
netdev_features_t feature = gso_type << NETIF_F_GSO_SHIFT;
return (features & feature) == feature;
}
-static inline int skb_gso_ok(struct sk_buff *skb, netdev_features_t features)
+static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features)
{
return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
(!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST));
}
-static inline int netif_needs_gso(struct sk_buff *skb,
- netdev_features_t features)
+static inline bool netif_needs_gso(struct sk_buff *skb,
+ netdev_features_t features)
{
return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
- unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
+ unlikely((skb->ip_summed != CHECKSUM_PARTIAL) &&
+ (skb->ip_summed != CHECKSUM_UNNECESSARY)));
}
static inline void netif_set_gso_max_size(struct net_device *dev,
dev->gso_max_size = size;
}
-static inline int netif_is_bond_slave(struct net_device *dev)
+static inline bool netif_is_bond_slave(struct net_device *dev)
{
return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING;
}
+static inline bool netif_supports_nofcs(struct net_device *dev)
+{
+ return dev->priv_flags & IFF_SUPP_NOFCS;
+}
+
extern struct pernet_operations __net_initdata loopback_net_ops;
/* Logging, debugging and troubleshooting/diagnostic helpers. */
git.openpandora.org / pandora-kernel.git / blobdiff