diff options
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 13 | ||||
| -rw-r--r-- | drivers/net/hamradio/bpqether.c | 12 | ||||
| -rw-r--r-- | drivers/net/macvlan.c | 14 | ||||
| -rw-r--r-- | drivers/net/wireless/hostap/hostap_hw.c | 12 | ||||
| -rw-r--r-- | include/linux/netdevice.h | 62 | ||||
| -rw-r--r-- | net/8021q/vlan_dev.c | 15 | ||||
| -rw-r--r-- | net/core/dev.c | 28 | ||||
| -rw-r--r-- | net/netrom/af_netrom.c | 12 | ||||
| -rw-r--r-- | net/rose/af_rose.c | 12 | ||||
| -rw-r--r-- | net/sched/sch_generic.c | 9 |
10 files changed, 145 insertions, 44 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index d57b65dc2c72..dc733d75a5e9 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -5019,6 +5019,17 @@ static int bond_check_params(struct bond_params *params) static struct lock_class_key bonding_netdev_xmit_lock_key; +static void bond_set_lockdep_class_one(struct netdev_queue *txq) +{ + lockdep_set_class(&txq->_xmit_lock, + &bonding_netdev_xmit_lock_key); +} + +static void bond_set_lockdep_class(struct net_device *dev) +{ + bond_set_lockdep_class_one(&dev->tx_queue); +} + /* Create a new bond based on the specified name and bonding parameters. * If name is NULL, obtain a suitable "bond%d" name for us. * Caller must NOT hold rtnl_lock; we need to release it here before we @@ -5076,7 +5087,7 @@ int bond_create(char *name, struct bond_params *params) goto out_bond; } - lockdep_set_class(&bond_dev->_xmit_lock, &bonding_netdev_xmit_lock_key); + bond_set_lockdep_class(bond_dev); netif_carrier_off(bond_dev); diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c index 5f4b4c6c9f76..fb186b8c3d4d 100644 --- a/drivers/net/hamradio/bpqether.c +++ b/drivers/net/hamradio/bpqether.c @@ -124,6 +124,16 @@ static LIST_HEAD(bpq_devices); */ static struct lock_class_key bpq_netdev_xmit_lock_key; +static void bpq_set_lockdep_class_one(struct netdev_queue *txq) +{ + lockdep_set_class(&txq->_xmit_lock, &bpq_netdev_xmit_lock_key); +} + +static void bpq_set_lockdep_class(struct net_device *dev) +{ + bpq_set_lockdep_class_one(&dev->tx_queue); +} + /* ------------------------------------------------------------------------ */ @@ -523,7 +533,7 @@ static int bpq_new_device(struct net_device *edev) err = register_netdevice(ndev); if (err) goto error; - lockdep_set_class(&ndev->_xmit_lock, &bpq_netdev_xmit_lock_key); + bpq_set_lockdep_class(ndev); /* List protected by RTNL */ list_add_rcu(&bpq->bpq_list, &bpq_devices); diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index c36a03ae9bfb..c02ceaa4a216 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -277,6 +277,17 @@ static struct lock_class_key macvlan_netdev_xmit_lock_key; #define MACVLAN_STATE_MASK \ ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) +static void macvlan_set_lockdep_class_one(struct netdev_queue *txq) +{ + lockdep_set_class(&txq->_xmit_lock, + &macvlan_netdev_xmit_lock_key); +} + +static void macvlan_set_lockdep_class(struct net_device *dev) +{ + macvlan_set_lockdep_class_one(&dev->tx_queue); +} + static int macvlan_init(struct net_device *dev) { struct macvlan_dev *vlan = netdev_priv(dev); @@ -287,7 +298,8 @@ static int macvlan_init(struct net_device *dev) dev->features = lowerdev->features & MACVLAN_FEATURES; dev->iflink = lowerdev->ifindex; - lockdep_set_class(&dev->_xmit_lock, &macvlan_netdev_xmit_lock_key); + macvlan_set_lockdep_class(dev); + return 0; } diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c index 09004a632ae7..c1f4bb005d92 100644 --- a/drivers/net/wireless/hostap/hostap_hw.c +++ b/drivers/net/wireless/hostap/hostap_hw.c @@ -3102,6 +3102,16 @@ static void prism2_clear_set_tim_queue(local_info_t *local) */ static struct lock_class_key hostap_netdev_xmit_lock_key; +static void prism2_set_lockdep_class_one(struct netdev_queue *txq) +{ + lockdep_set_class(&txq->_xmit_lock, + &hostap_netdev_xmit_lock_key); +} + +static void prism2_set_lockdep_class(struct net_device *dev) +{ + prism2_set_lockdep_class_one(&dev->tx_queue); +} static struct net_device * prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, @@ -3268,7 +3278,7 @@ while (0) if (ret >= 0) ret = register_netdevice(dev); - lockdep_set_class(&dev->_xmit_lock, &hostap_netdev_xmit_lock_key); + prism2_set_lockdep_class(dev); rtnl_unlock(); if (ret < 0) { printk(KERN_WARNING "%s: register netdevice failed!\n", diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 28aa8e77cee9..c8d5f128858d 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -453,6 +453,8 @@ struct netdev_queue { struct net_device *dev; struct Qdisc *qdisc; struct sk_buff *gso_skb; + spinlock_t _xmit_lock; + int xmit_lock_owner; struct Qdisc *qdisc_sleeping; struct list_head qdisc_list; struct netdev_queue *next_sched; @@ -639,12 +641,6 @@ struct net_device /* * One part is mostly used on xmit path (device) */ - /* hard_start_xmit synchronizer */ - spinlock_t _xmit_lock ____cacheline_aligned_in_smp; - /* cpu id of processor entered to hard_start_xmit or -1, - if nobody entered there. - */ - int xmit_lock_owner; void *priv; /* pointer to private data */ int (*hard_start_xmit) (struct sk_buff *skb, struct net_device *dev); @@ -1402,52 +1398,72 @@ static inline void netif_rx_complete(struct net_device *dev, * * Get network device transmit lock */ -static inline void __netif_tx_lock(struct net_device *dev, int cpu) +static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) { - spin_lock(&dev->_xmit_lock); - dev->xmit_lock_owner = cpu; + spin_lock(&txq->_xmit_lock); + txq->xmit_lock_owner = cpu; } static inline void netif_tx_lock(struct net_device *dev) { - __netif_tx_lock(dev, smp_processor_id()); + __netif_tx_lock(&dev->tx_queue, smp_processor_id()); +} + +static inline void __netif_tx_lock_bh(struct netdev_queue *txq) +{ + spin_lock_bh(&txq->_xmit_lock); + txq->xmit_lock_owner = smp_processor_id(); } static inline void netif_tx_lock_bh(struct net_device *dev) { - spin_lock_bh(&dev->_xmit_lock); - dev->xmit_lock_owner = smp_processor_id(); + __netif_tx_lock_bh(&dev->tx_queue); } -static inline int netif_tx_trylock(struct net_device *dev) +static inline int __netif_tx_trylock(struct netdev_queue *txq) { - int ok = spin_trylock(&dev->_xmit_lock); + int ok = spin_trylock(&txq->_xmit_lock); if (likely(ok)) - dev->xmit_lock_owner = smp_processor_id(); + txq->xmit_lock_owner = smp_processor_id(); return ok; } +static inline int netif_tx_trylock(struct net_device *dev) +{ + return __netif_tx_trylock(&dev->tx_queue); +} + +static inline void __netif_tx_unlock(struct netdev_queue *txq) +{ + txq->xmit_lock_owner = -1; + spin_unlock(&txq->_xmit_lock); +} + static inline void netif_tx_unlock(struct net_device *dev) { - dev->xmit_lock_owner = -1; - spin_unlock(&dev->_xmit_lock); + __netif_tx_unlock(&dev->tx_queue); +} + +static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) +{ + txq->xmit_lock_owner = -1; + spin_unlock_bh(&txq->_xmit_lock); } static inline void netif_tx_unlock_bh(struct net_device *dev) { - dev->xmit_lock_owner = -1; - spin_unlock_bh(&dev->_xmit_lock); + __netif_tx_unlock_bh(&dev->tx_queue); } -#define HARD_TX_LOCK(dev, cpu) { \ +#define HARD_TX_LOCK(dev, txq, cpu) { \ if ((dev->features & NETIF_F_LLTX) == 0) { \ - __netif_tx_lock(dev, cpu); \ + __netif_tx_lock(txq, cpu); \ } \ } -#define HARD_TX_UNLOCK(dev) { \ +#define HARD_TX_UNLOCK(dev, txq) { \ if ((dev->features & NETIF_F_LLTX) == 0) { \ - netif_tx_unlock(dev); \ + __netif_tx_unlock(txq); \ } \ } diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index b6e52c025fd8..8efa399823e3 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -627,6 +627,18 @@ static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) */ static struct lock_class_key vlan_netdev_xmit_lock_key; +static void vlan_dev_set_lockdep_one(struct netdev_queue *txq, + int subclass) +{ + lockdep_set_class_and_subclass(&txq->_xmit_lock, + &vlan_netdev_xmit_lock_key, subclass); +} + +static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) +{ + vlan_dev_set_lockdep_one(&dev->tx_queue, subclass); +} + static const struct header_ops vlan_header_ops = { .create = vlan_dev_hard_header, .rebuild = vlan_dev_rebuild_header, @@ -668,8 +680,7 @@ static int vlan_dev_init(struct net_device *dev) if (is_vlan_dev(real_dev)) subclass = 1; - lockdep_set_class_and_subclass(&dev->_xmit_lock, - &vlan_netdev_xmit_lock_key, subclass); + vlan_dev_set_lockdep_class(dev, subclass); return 0; } diff --git a/net/core/dev.c b/net/core/dev.c index 0218b0b9be80..a29a359b15d1 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -258,7 +258,7 @@ DEFINE_PER_CPU(struct softnet_data, softnet_data); #ifdef CONFIG_DEBUG_LOCK_ALLOC /* - * register_netdevice() inits dev->_xmit_lock and sets lockdep class + * register_netdevice() inits txq->_xmit_lock and sets lockdep class * according to dev->type */ static const unsigned short netdev_lock_type[] = @@ -1758,19 +1758,19 @@ gso: if (dev->flags & IFF_UP) { int cpu = smp_processor_id(); /* ok because BHs are off */ - if (dev->xmit_lock_owner != cpu) { + if (txq->xmit_lock_owner != cpu) { - HARD_TX_LOCK(dev, cpu); + HARD_TX_LOCK(dev, txq, cpu); if (!netif_queue_stopped(dev) && !netif_subqueue_stopped(dev, skb)) { rc = 0; if (!dev_hard_start_xmit(skb, dev)) { - HARD_TX_UNLOCK(dev); + HARD_TX_UNLOCK(dev, txq); goto out; } } - HARD_TX_UNLOCK(dev); + HARD_TX_UNLOCK(dev, txq); if (net_ratelimit()) printk(KERN_CRIT "Virtual device %s asks to " "queue packet!\n", dev->name); @@ -3761,6 +3761,20 @@ static void rollback_registered(struct net_device *dev) dev_put(dev); } +static void __netdev_init_queue_locks_one(struct netdev_queue *dev_queue, + struct net_device *dev) +{ + spin_lock_init(&dev_queue->_xmit_lock); + netdev_set_lockdep_class(&dev_queue->_xmit_lock, dev->type); + dev_queue->xmit_lock_owner = -1; +} + +static void netdev_init_queue_locks(struct net_device *dev) +{ + __netdev_init_queue_locks_one(&dev->tx_queue, dev); + __netdev_init_queue_locks_one(&dev->rx_queue, dev); +} + /** * register_netdevice - register a network device * @dev: device to register @@ -3795,9 +3809,7 @@ int register_netdevice(struct net_device *dev) BUG_ON(!dev_net(dev)); net = dev_net(dev); - spin_lock_init(&dev->_xmit_lock); - netdev_set_lockdep_class(&dev->_xmit_lock, dev->type); - dev->xmit_lock_owner = -1; + netdev_init_queue_locks(dev); dev->iflink = -1; diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 74884f4a6255..819afc449e1e 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -74,6 +74,16 @@ static const struct proto_ops nr_proto_ops; */ static struct lock_class_key nr_netdev_xmit_lock_key; +static void nr_set_lockdep_one(struct netdev_queue *txq) +{ + lockdep_set_class(&txq->_xmit_lock, &nr_netdev_xmit_lock_key); +} + +static void nr_set_lockdep_key(struct net_device *dev) +{ + nr_set_lockdep_one(&dev->tx_queue); +} + /* * Socket removal during an interrupt is now safe. */ @@ -1430,7 +1440,7 @@ static int __init nr_proto_init(void) free_netdev(dev); goto fail; } - lockdep_set_class(&dev->_xmit_lock, &nr_netdev_xmit_lock_key); + nr_set_lockdep_key(dev); dev_nr[i] = dev; } diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c index 46461a69cd0f..7dbbc0891623 100644 --- a/net/rose/af_rose.c +++ b/net/rose/af_rose.c @@ -75,6 +75,16 @@ ax25_address rose_callsign; */ static struct lock_class_key rose_netdev_xmit_lock_key; +static void rose_set_lockdep_one(struct netdev_queue *txq) +{ + lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); +} + +static void rose_set_lockdep_key(struct net_device *dev) +{ + rose_set_lockdep_one(&dev->tx_queue); +} + /* * Convert a ROSE address into text. */ @@ -1576,7 +1586,7 @@ static int __init rose_proto_init(void) free_netdev(dev); goto fail; } - lockdep_set_class(&dev->_xmit_lock, &rose_netdev_xmit_lock_key); + rose_set_lockdep_key(dev); dev_rose[i] = dev; } diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index fcc7533f0bcc..b6a36d394663 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -92,10 +92,9 @@ static inline int handle_dev_cpu_collision(struct sk_buff *skb, struct netdev_queue *dev_queue, struct Qdisc *q) { - struct net_device *dev = dev_queue->dev; int ret; - if (unlikely(dev->xmit_lock_owner == smp_processor_id())) { + if (unlikely(dev_queue->xmit_lock_owner == smp_processor_id())) { /* * Same CPU holding the lock. It may be a transient * configuration error, when hard_start_xmit() recurses. We @@ -105,7 +104,7 @@ static inline int handle_dev_cpu_collision(struct sk_buff *skb, kfree_skb(skb); if (net_ratelimit()) printk(KERN_WARNING "Dead loop on netdevice %s, " - "fix it urgently!\n", dev->name); + "fix it urgently!\n", dev_queue->dev->name); ret = qdisc_qlen(q); } else { /* @@ -155,10 +154,10 @@ static inline int qdisc_restart(struct netdev_queue *txq) dev = txq->dev; - HARD_TX_LOCK(dev, smp_processor_id()); + HARD_TX_LOCK(dev, txq, smp_processor_id()); if (!netif_subqueue_stopped(dev, skb)) ret = dev_hard_start_xmit(skb, dev); - HARD_TX_UNLOCK(dev); + HARD_TX_UNLOCK(dev, txq); spin_lock(&txq->lock); q = txq->qdisc; |