提交 e8a0464c 编写于 作者: D David S. Miller

netdev: Allocate multiple queues for TX.

alloc_netdev_mq() now allocates an array of netdev_queue
structures for TX, based upon the queue_count argument.

Furthermore, all accesses to the TX queues are now vectored
through the netdev_get_tx_queue() and netdev_for_each_tx_queue()
interfaces.  This makes it easy to grep the tree for all
things that want to get to a TX queue of a net device.

Problem spots which are not really multiqueue aware yet, and
only work with one queue, can easily be spotted by grepping
for all netdev_get_tx_queue() calls that pass in a zero index.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 070825b3
...@@ -5042,7 +5042,9 @@ static int bond_check_params(struct bond_params *params) ...@@ -5042,7 +5042,9 @@ static int bond_check_params(struct bond_params *params)
static struct lock_class_key bonding_netdev_xmit_lock_key; static struct lock_class_key bonding_netdev_xmit_lock_key;
static void bond_set_lockdep_class_one(struct netdev_queue *txq) static void bond_set_lockdep_class_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{ {
lockdep_set_class(&txq->_xmit_lock, lockdep_set_class(&txq->_xmit_lock,
&bonding_netdev_xmit_lock_key); &bonding_netdev_xmit_lock_key);
...@@ -5050,7 +5052,7 @@ static void bond_set_lockdep_class_one(struct netdev_queue *txq) ...@@ -5050,7 +5052,7 @@ static void bond_set_lockdep_class_one(struct netdev_queue *txq)
static void bond_set_lockdep_class(struct net_device *dev) static void bond_set_lockdep_class(struct net_device *dev)
{ {
bond_set_lockdep_class_one(&dev->tx_queue); netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL);
} }
/* Create a new bond based on the specified name and bonding parameters. /* Create a new bond based on the specified name and bonding parameters.
......
...@@ -124,14 +124,16 @@ static LIST_HEAD(bpq_devices); ...@@ -124,14 +124,16 @@ static LIST_HEAD(bpq_devices);
*/ */
static struct lock_class_key bpq_netdev_xmit_lock_key; static struct lock_class_key bpq_netdev_xmit_lock_key;
static void bpq_set_lockdep_class_one(struct netdev_queue *txq) static void bpq_set_lockdep_class_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{ {
lockdep_set_class(&txq->_xmit_lock, &bpq_netdev_xmit_lock_key); lockdep_set_class(&txq->_xmit_lock, &bpq_netdev_xmit_lock_key);
} }
static void bpq_set_lockdep_class(struct net_device *dev) static void bpq_set_lockdep_class(struct net_device *dev)
{ {
bpq_set_lockdep_class_one(&dev->tx_queue); netdev_for_each_tx_queue(dev, bpq_set_lockdep_class_one, NULL);
} }
/* ------------------------------------------------------------------------ */ /* ------------------------------------------------------------------------ */
......
...@@ -229,14 +229,20 @@ module_param(numifbs, int, 0); ...@@ -229,14 +229,20 @@ module_param(numifbs, int, 0);
MODULE_PARM_DESC(numifbs, "Number of ifb devices"); MODULE_PARM_DESC(numifbs, "Number of ifb devices");
/* /*
* dev_ifb->tx_queue.lock is usually taken after dev->rx_queue.lock, * dev_ifb's TX queue lock is usually taken after dev->rx_queue.lock,
* reversely to e.g. qdisc_lock_tree(). It should be safe until * reversely to e.g. qdisc_lock_tree(). It should be safe until
* ifb doesn't take dev->tx_queue.lock with dev_ifb->rx_queue.lock. * ifb doesn't take dev's TX queue lock with dev_ifb->rx_queue.lock.
* But lockdep should know that ifb has different locks from dev. * But lockdep should know that ifb has different locks from dev.
*/ */
static struct lock_class_key ifb_tx_queue_lock_key; static struct lock_class_key ifb_tx_queue_lock_key;
static struct lock_class_key ifb_rx_queue_lock_key; static struct lock_class_key ifb_rx_queue_lock_key;
static void set_tx_lockdep_key(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{
lockdep_set_class(&txq->lock, &ifb_tx_queue_lock_key);
}
static int __init ifb_init_one(int index) static int __init ifb_init_one(int index)
{ {
...@@ -258,7 +264,7 @@ static int __init ifb_init_one(int index) ...@@ -258,7 +264,7 @@ static int __init ifb_init_one(int index)
if (err < 0) if (err < 0)
goto err; goto err;
lockdep_set_class(&dev_ifb->tx_queue.lock, &ifb_tx_queue_lock_key); netdev_for_each_tx_queue(dev_ifb, set_tx_lockdep_key, NULL);
lockdep_set_class(&dev_ifb->rx_queue.lock, &ifb_rx_queue_lock_key); lockdep_set_class(&dev_ifb->rx_queue.lock, &ifb_rx_queue_lock_key);
return 0; return 0;
......
...@@ -285,7 +285,9 @@ static struct lock_class_key macvlan_netdev_xmit_lock_key; ...@@ -285,7 +285,9 @@ static struct lock_class_key macvlan_netdev_xmit_lock_key;
#define MACVLAN_STATE_MASK \ #define MACVLAN_STATE_MASK \
((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT))
static void macvlan_set_lockdep_class_one(struct netdev_queue *txq) static void macvlan_set_lockdep_class_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{ {
lockdep_set_class(&txq->_xmit_lock, lockdep_set_class(&txq->_xmit_lock,
&macvlan_netdev_xmit_lock_key); &macvlan_netdev_xmit_lock_key);
...@@ -293,7 +295,7 @@ static void macvlan_set_lockdep_class_one(struct netdev_queue *txq) ...@@ -293,7 +295,7 @@ static void macvlan_set_lockdep_class_one(struct netdev_queue *txq)
static void macvlan_set_lockdep_class(struct net_device *dev) static void macvlan_set_lockdep_class(struct net_device *dev)
{ {
macvlan_set_lockdep_class_one(&dev->tx_queue); netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL);
} }
static int macvlan_init(struct net_device *dev) static int macvlan_init(struct net_device *dev)
......
...@@ -3102,7 +3102,9 @@ static void prism2_clear_set_tim_queue(local_info_t *local) ...@@ -3102,7 +3102,9 @@ static void prism2_clear_set_tim_queue(local_info_t *local)
*/ */
static struct lock_class_key hostap_netdev_xmit_lock_key; static struct lock_class_key hostap_netdev_xmit_lock_key;
static void prism2_set_lockdep_class_one(struct netdev_queue *txq) static void prism2_set_lockdep_class_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{ {
lockdep_set_class(&txq->_xmit_lock, lockdep_set_class(&txq->_xmit_lock,
&hostap_netdev_xmit_lock_key); &hostap_netdev_xmit_lock_key);
...@@ -3110,7 +3112,7 @@ static void prism2_set_lockdep_class_one(struct netdev_queue *txq) ...@@ -3110,7 +3112,7 @@ static void prism2_set_lockdep_class_one(struct netdev_queue *txq)
static void prism2_set_lockdep_class(struct net_device *dev) static void prism2_set_lockdep_class(struct net_device *dev)
{ {
prism2_set_lockdep_class_one(&dev->tx_queue); netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL);
} }
static struct net_device * static struct net_device *
......
...@@ -463,7 +463,7 @@ struct netdev_queue { ...@@ -463,7 +463,7 @@ struct netdev_queue {
struct Qdisc *qdisc_sleeping; struct Qdisc *qdisc_sleeping;
struct list_head qdisc_list; struct list_head qdisc_list;
struct netdev_queue *next_sched; struct netdev_queue *next_sched;
}; } ____cacheline_aligned_in_smp;
/* /*
* The DEVICE structure. * The DEVICE structure.
...@@ -641,7 +641,9 @@ struct net_device ...@@ -641,7 +641,9 @@ struct net_device
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
struct netdev_queue rx_queue; struct netdev_queue rx_queue;
struct netdev_queue tx_queue ____cacheline_aligned_in_smp;
struct netdev_queue *_tx ____cacheline_aligned_in_smp;
unsigned int num_tx_queues;
unsigned long tx_queue_len; /* Max frames per queue allowed */ unsigned long tx_queue_len; /* Max frames per queue allowed */
/* /*
...@@ -764,6 +766,25 @@ struct net_device ...@@ -764,6 +766,25 @@ struct net_device
#define NETDEV_ALIGN 32 #define NETDEV_ALIGN 32
#define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
static inline
struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
unsigned int index)
{
return &dev->_tx[index];
}
static inline void netdev_for_each_tx_queue(struct net_device *dev,
void (*f)(struct net_device *,
struct netdev_queue *,
void *),
void *arg)
{
unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++)
f(dev, &dev->_tx[i], arg);
}
/* /*
* Net namespace inlines * Net namespace inlines
*/ */
...@@ -977,7 +998,7 @@ static inline void netif_schedule_queue(struct netdev_queue *txq) ...@@ -977,7 +998,7 @@ static inline void netif_schedule_queue(struct netdev_queue *txq)
static inline void netif_schedule(struct net_device *dev) static inline void netif_schedule(struct net_device *dev)
{ {
netif_schedule_queue(&dev->tx_queue); netif_schedule_queue(netdev_get_tx_queue(dev, 0));
} }
/** /**
...@@ -993,7 +1014,7 @@ static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) ...@@ -993,7 +1014,7 @@ static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
static inline void netif_start_queue(struct net_device *dev) static inline void netif_start_queue(struct net_device *dev)
{ {
netif_tx_start_queue(&dev->tx_queue); netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
} }
/** /**
...@@ -1017,7 +1038,7 @@ static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) ...@@ -1017,7 +1038,7 @@ static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
static inline void netif_wake_queue(struct net_device *dev) static inline void netif_wake_queue(struct net_device *dev)
{ {
netif_tx_wake_queue(&dev->tx_queue); netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
} }
/** /**
...@@ -1034,7 +1055,7 @@ static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) ...@@ -1034,7 +1055,7 @@ static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
static inline void netif_stop_queue(struct net_device *dev) static inline void netif_stop_queue(struct net_device *dev)
{ {
netif_tx_stop_queue(&dev->tx_queue); netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
} }
/** /**
...@@ -1050,7 +1071,7 @@ static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) ...@@ -1050,7 +1071,7 @@ static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
static inline int netif_queue_stopped(const struct net_device *dev) static inline int netif_queue_stopped(const struct net_device *dev)
{ {
return netif_tx_queue_stopped(&dev->tx_queue); return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
} }
/** /**
...@@ -1134,7 +1155,7 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) ...@@ -1134,7 +1155,7 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
#endif #endif
if (test_and_clear_bit(__QUEUE_STATE_XOFF, if (test_and_clear_bit(__QUEUE_STATE_XOFF,
&dev->egress_subqueue[queue_index].state)) &dev->egress_subqueue[queue_index].state))
__netif_schedule(&dev->tx_queue); __netif_schedule(netdev_get_tx_queue(dev, 0));
} }
/** /**
...@@ -1430,18 +1451,19 @@ static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) ...@@ -1430,18 +1451,19 @@ static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
static inline void netif_tx_lock(struct net_device *dev) static inline void netif_tx_lock(struct net_device *dev)
{ {
__netif_tx_lock(&dev->tx_queue, smp_processor_id()); int cpu = smp_processor_id();
} unsigned int i;
static inline void __netif_tx_lock_bh(struct netdev_queue *txq) for (i = 0; i < dev->num_tx_queues; i++) {
{ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
spin_lock_bh(&txq->_xmit_lock); __netif_tx_lock(txq, cpu);
txq->xmit_lock_owner = smp_processor_id(); }
} }
static inline void netif_tx_lock_bh(struct net_device *dev) static inline void netif_tx_lock_bh(struct net_device *dev)
{ {
__netif_tx_lock_bh(&dev->tx_queue); local_bh_disable();
netif_tx_lock(dev);
} }
static inline int __netif_tx_trylock(struct netdev_queue *txq) static inline int __netif_tx_trylock(struct netdev_queue *txq)
...@@ -1454,7 +1476,7 @@ static inline int __netif_tx_trylock(struct netdev_queue *txq) ...@@ -1454,7 +1476,7 @@ static inline int __netif_tx_trylock(struct netdev_queue *txq)
static inline int netif_tx_trylock(struct net_device *dev) static inline int netif_tx_trylock(struct net_device *dev)
{ {
return __netif_tx_trylock(&dev->tx_queue); return __netif_tx_trylock(netdev_get_tx_queue(dev, 0));
} }
static inline void __netif_tx_unlock(struct netdev_queue *txq) static inline void __netif_tx_unlock(struct netdev_queue *txq)
...@@ -1465,18 +1487,19 @@ static inline void __netif_tx_unlock(struct netdev_queue *txq) ...@@ -1465,18 +1487,19 @@ static inline void __netif_tx_unlock(struct netdev_queue *txq)
static inline void netif_tx_unlock(struct net_device *dev) static inline void netif_tx_unlock(struct net_device *dev)
{ {
__netif_tx_unlock(&dev->tx_queue); unsigned int i;
}
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
__netif_tx_unlock(txq);
}
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) static inline void netif_tx_unlock_bh(struct net_device *dev)
{ {
__netif_tx_unlock_bh(&dev->tx_queue); netif_tx_unlock(dev);
local_bh_enable();
} }
#define HARD_TX_LOCK(dev, txq, cpu) { \ #define HARD_TX_LOCK(dev, txq, cpu) { \
......
...@@ -230,32 +230,47 @@ extern void tcf_destroy_chain(struct tcf_proto **fl); ...@@ -230,32 +230,47 @@ extern void tcf_destroy_chain(struct tcf_proto **fl);
/* Reset all TX qdiscs of a device. */ /* Reset all TX qdiscs of a device. */
static inline void qdisc_reset_all_tx(struct net_device *dev) static inline void qdisc_reset_all_tx(struct net_device *dev)
{ {
qdisc_reset(dev->tx_queue.qdisc); unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++)
qdisc_reset(netdev_get_tx_queue(dev, i)->qdisc);
} }
/* Are all TX queues of the device empty? */ /* Are all TX queues of the device empty? */
static inline bool qdisc_all_tx_empty(const struct net_device *dev) static inline bool qdisc_all_tx_empty(const struct net_device *dev)
{ {
const struct netdev_queue *txq = &dev->tx_queue; unsigned int i;
const struct Qdisc *q = txq->qdisc; for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
const struct Qdisc *q = txq->qdisc;
return (q->q.qlen == 0); if (q->q.qlen)
return false;
}
return true;
} }
/* Are any of the TX qdiscs changing? */ /* Are any of the TX qdiscs changing? */
static inline bool qdisc_tx_changing(struct net_device *dev) static inline bool qdisc_tx_changing(struct net_device *dev)
{ {
struct netdev_queue *txq = &dev->tx_queue; unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++) {
return (txq->qdisc != txq->qdisc_sleeping); struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
if (txq->qdisc != txq->qdisc_sleeping)
return true;
}
return false;
} }
/* Is the device using the noop qdisc? */ /* Is the device using the noop qdisc on all queues? */
static inline bool qdisc_tx_is_noop(const struct net_device *dev) static inline bool qdisc_tx_is_noop(const struct net_device *dev)
{ {
const struct netdev_queue *txq = &dev->tx_queue; unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++) {
return (txq->qdisc == &noop_qdisc); struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
if (txq->qdisc != &noop_qdisc)
return false;
}
return true;
} }
static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch, static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
......
...@@ -570,16 +570,18 @@ static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) ...@@ -570,16 +570,18 @@ static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
*/ */
static struct lock_class_key vlan_netdev_xmit_lock_key; static struct lock_class_key vlan_netdev_xmit_lock_key;
static void vlan_dev_set_lockdep_one(struct netdev_queue *txq, static void vlan_dev_set_lockdep_one(struct net_device *dev,
int subclass) struct netdev_queue *txq,
void *_subclass)
{ {
lockdep_set_class_and_subclass(&txq->_xmit_lock, lockdep_set_class_and_subclass(&txq->_xmit_lock,
&vlan_netdev_xmit_lock_key, subclass); &vlan_netdev_xmit_lock_key,
*(int *)_subclass);
} }
static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
{ {
vlan_dev_set_lockdep_one(&dev->tx_queue, subclass); netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
} }
static const struct header_ops vlan_header_ops = { static const struct header_ops vlan_header_ops = {
......
...@@ -1666,6 +1666,12 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -1666,6 +1666,12 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
* --BLG * --BLG
*/ */
static struct netdev_queue *dev_pick_tx(struct net_device *dev,
struct sk_buff *skb)
{
return netdev_get_tx_queue(dev, 0);
}
int dev_queue_xmit(struct sk_buff *skb) int dev_queue_xmit(struct sk_buff *skb)
{ {
struct net_device *dev = skb->dev; struct net_device *dev = skb->dev;
...@@ -1702,7 +1708,7 @@ int dev_queue_xmit(struct sk_buff *skb) ...@@ -1702,7 +1708,7 @@ int dev_queue_xmit(struct sk_buff *skb)
} }
gso: gso:
txq = &dev->tx_queue; txq = dev_pick_tx(dev, skb);
spin_lock_prefetch(&txq->lock); spin_lock_prefetch(&txq->lock);
/* Disable soft irqs for various locks below. Also /* Disable soft irqs for various locks below. Also
...@@ -3788,8 +3794,9 @@ static void rollback_registered(struct net_device *dev) ...@@ -3788,8 +3794,9 @@ static void rollback_registered(struct net_device *dev)
dev_put(dev); dev_put(dev);
} }
static void __netdev_init_queue_locks_one(struct netdev_queue *dev_queue, static void __netdev_init_queue_locks_one(struct net_device *dev,
struct net_device *dev) struct netdev_queue *dev_queue,
void *_unused)
{ {
spin_lock_init(&dev_queue->_xmit_lock); spin_lock_init(&dev_queue->_xmit_lock);
netdev_set_lockdep_class(&dev_queue->_xmit_lock, dev->type); netdev_set_lockdep_class(&dev_queue->_xmit_lock, dev->type);
...@@ -3798,8 +3805,8 @@ static void __netdev_init_queue_locks_one(struct netdev_queue *dev_queue, ...@@ -3798,8 +3805,8 @@ static void __netdev_init_queue_locks_one(struct netdev_queue *dev_queue,
static void netdev_init_queue_locks(struct net_device *dev) static void netdev_init_queue_locks(struct net_device *dev)
{ {
__netdev_init_queue_locks_one(&dev->tx_queue, dev); netdev_for_each_tx_queue(dev, __netdev_init_queue_locks_one, NULL);
__netdev_init_queue_locks_one(&dev->rx_queue, dev); __netdev_init_queue_locks_one(dev, &dev->rx_queue, NULL);
} }
/** /**
...@@ -4119,7 +4126,8 @@ static struct net_device_stats *internal_stats(struct net_device *dev) ...@@ -4119,7 +4126,8 @@ static struct net_device_stats *internal_stats(struct net_device *dev)
} }
static void netdev_init_one_queue(struct net_device *dev, static void netdev_init_one_queue(struct net_device *dev,
struct netdev_queue *queue) struct netdev_queue *queue,
void *_unused)
{ {
spin_lock_init(&queue->lock); spin_lock_init(&queue->lock);
queue->dev = dev; queue->dev = dev;
...@@ -4127,8 +4135,8 @@ static void netdev_init_one_queue(struct net_device *dev, ...@@ -4127,8 +4135,8 @@ static void netdev_init_one_queue(struct net_device *dev,
static void netdev_init_queues(struct net_device *dev) static void netdev_init_queues(struct net_device *dev)
{ {
netdev_init_one_queue(dev, &dev->rx_queue); netdev_init_one_queue(dev, &dev->rx_queue, NULL);
netdev_init_one_queue(dev, &dev->tx_queue); netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
} }
/** /**
...@@ -4145,9 +4153,10 @@ static void netdev_init_queues(struct net_device *dev) ...@@ -4145,9 +4153,10 @@ static void netdev_init_queues(struct net_device *dev)
struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
void (*setup)(struct net_device *), unsigned int queue_count) void (*setup)(struct net_device *), unsigned int queue_count)
{ {
void *p; struct netdev_queue *tx;
struct net_device *dev; struct net_device *dev;
int alloc_size; int alloc_size;
void *p;
BUG_ON(strlen(name) >= sizeof(dev->name)); BUG_ON(strlen(name) >= sizeof(dev->name));
...@@ -4167,11 +4176,22 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, ...@@ -4167,11 +4176,22 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
return NULL; return NULL;
} }
tx = kzalloc(sizeof(struct netdev_queue) * queue_count, GFP_KERNEL);
if (!tx) {
printk(KERN_ERR "alloc_netdev: Unable to allocate "
"tx qdiscs.\n");
kfree(p);
return NULL;
}
dev = (struct net_device *) dev = (struct net_device *)
(((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); (((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
dev->padded = (char *)dev - (char *)p; dev->padded = (char *)dev - (char *)p;
dev_net_set(dev, &init_net); dev_net_set(dev, &init_net);
dev->_tx = tx;
dev->num_tx_queues = queue_count;
if (sizeof_priv) { if (sizeof_priv) {
dev->priv = ((char *)dev + dev->priv = ((char *)dev +
((sizeof(struct net_device) + ((sizeof(struct net_device) +
...@@ -4205,6 +4225,8 @@ void free_netdev(struct net_device *dev) ...@@ -4205,6 +4225,8 @@ void free_netdev(struct net_device *dev)
{ {
release_net(dev_net(dev)); release_net(dev_net(dev));
kfree(dev->_tx);
/* Compatibility with error handling in drivers */ /* Compatibility with error handling in drivers */
if (dev->reg_state == NETREG_UNINITIALIZED) { if (dev->reg_state == NETREG_UNINITIALIZED) {
kfree((char *)dev - dev->padded); kfree((char *)dev - dev->padded);
......
...@@ -636,7 +636,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, ...@@ -636,7 +636,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
if (dev->master) if (dev->master)
NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex); NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
txq = &dev->tx_queue; txq = netdev_get_tx_queue(dev, 0);
if (txq->qdisc_sleeping) if (txq->qdisc_sleeping)
NLA_PUT_STRING(skb, IFLA_QDISC, txq->qdisc_sleeping->ops->id); NLA_PUT_STRING(skb, IFLA_QDISC, txq->qdisc_sleeping->ops->id);
......
...@@ -621,7 +621,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) ...@@ -621,7 +621,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
/* ensure that TX flow won't interrupt us /* ensure that TX flow won't interrupt us
* until the end of the call to requeue function */ * until the end of the call to requeue function */
txq = &local->mdev->tx_queue; txq = netdev_get_tx_queue(local->mdev, 0);
spin_lock_bh(&txq->lock); spin_lock_bh(&txq->lock);
/* create a new queue for this aggregation */ /* create a new queue for this aggregation */
...@@ -862,7 +862,7 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) ...@@ -862,7 +862,7 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
/* avoid ordering issues: we are the only one that can modify /* avoid ordering issues: we are the only one that can modify
* the content of the qdiscs */ * the content of the qdiscs */
txq = &local->mdev->tx_queue; txq = netdev_get_tx_queue(local->mdev, 0);
spin_lock_bh(&txq->lock); spin_lock_bh(&txq->lock);
/* remove the queue for this aggregation */ /* remove the queue for this aggregation */
ieee80211_ht_agg_queue_remove(local, sta, tid, 1); ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
......
...@@ -574,7 +574,7 @@ static struct Qdisc_ops wme_qdisc_ops __read_mostly = ...@@ -574,7 +574,7 @@ static struct Qdisc_ops wme_qdisc_ops __read_mostly =
void ieee80211_install_qdisc(struct net_device *dev) void ieee80211_install_qdisc(struct net_device *dev)
{ {
struct netdev_queue *txq = &dev->tx_queue; struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
struct Qdisc *qdisc; struct Qdisc *qdisc;
qdisc = qdisc_create_dflt(dev, txq, qdisc = qdisc_create_dflt(dev, txq,
...@@ -596,7 +596,7 @@ void ieee80211_install_qdisc(struct net_device *dev) ...@@ -596,7 +596,7 @@ void ieee80211_install_qdisc(struct net_device *dev)
int ieee80211_qdisc_installed(struct net_device *dev) int ieee80211_qdisc_installed(struct net_device *dev)
{ {
struct netdev_queue *txq = &dev->tx_queue; struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
return txq->qdisc_sleeping->ops == &wme_qdisc_ops; return txq->qdisc_sleeping->ops == &wme_qdisc_ops;
} }
...@@ -617,7 +617,7 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, ...@@ -617,7 +617,7 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
struct sta_info *sta, u16 tid) struct sta_info *sta, u16 tid)
{ {
int i; int i;
struct netdev_queue *txq = &local->mdev->tx_queue; struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, 0);
struct ieee80211_sched_data *q = struct ieee80211_sched_data *q =
qdisc_priv(txq->qdisc_sleeping); qdisc_priv(txq->qdisc_sleeping);
DECLARE_MAC_BUF(mac); DECLARE_MAC_BUF(mac);
...@@ -652,14 +652,14 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, ...@@ -652,14 +652,14 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
} }
/** /**
* the caller needs to hold local->mdev->tx_queue.lock * the caller needs to hold netdev_get_tx_queue(local->mdev, X)->lock
*/ */
void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
struct sta_info *sta, u16 tid, struct sta_info *sta, u16 tid,
u8 requeue) u8 requeue)
{ {
struct ieee80211_hw *hw = &local->hw; struct ieee80211_hw *hw = &local->hw;
struct netdev_queue *txq = &local->mdev->tx_queue; struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, 0);
struct ieee80211_sched_data *q = struct ieee80211_sched_data *q =
qdisc_priv(txq->qdisc_sleeping); qdisc_priv(txq->qdisc_sleeping);
int agg_queue = sta->tid_to_tx_q[tid]; int agg_queue = sta->tid_to_tx_q[tid];
...@@ -676,7 +676,7 @@ void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, ...@@ -676,7 +676,7 @@ void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
void ieee80211_requeue(struct ieee80211_local *local, int queue) void ieee80211_requeue(struct ieee80211_local *local, int queue)
{ {
struct netdev_queue *txq = &local->mdev->tx_queue; struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, 0);
struct Qdisc *root_qd = txq->qdisc_sleeping; struct Qdisc *root_qd = txq->qdisc_sleeping;
struct ieee80211_sched_data *q = qdisc_priv(root_qd); struct ieee80211_sched_data *q = qdisc_priv(root_qd);
struct Qdisc *qdisc = q->queues[queue]; struct Qdisc *qdisc = q->queues[queue];
......
...@@ -74,14 +74,16 @@ static const struct proto_ops nr_proto_ops; ...@@ -74,14 +74,16 @@ static const struct proto_ops nr_proto_ops;
*/ */
static struct lock_class_key nr_netdev_xmit_lock_key; static struct lock_class_key nr_netdev_xmit_lock_key;
static void nr_set_lockdep_one(struct netdev_queue *txq) static void nr_set_lockdep_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{ {
lockdep_set_class(&txq->_xmit_lock, &nr_netdev_xmit_lock_key); lockdep_set_class(&txq->_xmit_lock, &nr_netdev_xmit_lock_key);
} }
static void nr_set_lockdep_key(struct net_device *dev) static void nr_set_lockdep_key(struct net_device *dev)
{ {
nr_set_lockdep_one(&dev->tx_queue); netdev_for_each_tx_queue(dev, nr_set_lockdep_one, NULL);
} }
/* /*
......
...@@ -75,14 +75,16 @@ ax25_address rose_callsign; ...@@ -75,14 +75,16 @@ ax25_address rose_callsign;
*/ */
static struct lock_class_key rose_netdev_xmit_lock_key; static struct lock_class_key rose_netdev_xmit_lock_key;
static void rose_set_lockdep_one(struct netdev_queue *txq) static void rose_set_lockdep_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{ {
lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
} }
static void rose_set_lockdep_key(struct net_device *dev) static void rose_set_lockdep_key(struct net_device *dev)
{ {
rose_set_lockdep_one(&dev->tx_queue); netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
} }
/* /*
......
...@@ -166,7 +166,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg) ...@@ -166,7 +166,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
/* Find qdisc */ /* Find qdisc */
if (!parent) { if (!parent) {
struct netdev_queue *dev_queue = &dev->tx_queue; struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, 0);
q = dev_queue->qdisc_sleeping; q = dev_queue->qdisc_sleeping;
parent = q->handle; parent = q->handle;
} else { } else {
...@@ -410,7 +410,7 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb) ...@@ -410,7 +410,7 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
if ((dev = dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL) if ((dev = dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
return skb->len; return skb->len;
dev_queue = &dev->tx_queue; dev_queue = netdev_get_tx_queue(dev, 0);
if (!tcm->tcm_parent) if (!tcm->tcm_parent)
q = dev_queue->qdisc_sleeping; q = dev_queue->qdisc_sleeping;
else else
......
...@@ -183,9 +183,8 @@ EXPORT_SYMBOL(unregister_qdisc); ...@@ -183,9 +183,8 @@ EXPORT_SYMBOL(unregister_qdisc);
(root qdisc, all its children, children of children etc.) (root qdisc, all its children, children of children etc.)
*/ */
struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle) static struct Qdisc *__qdisc_lookup(struct netdev_queue *dev_queue, u32 handle)
{ {
struct netdev_queue *dev_queue = &dev->tx_queue;
struct Qdisc *q; struct Qdisc *q;
list_for_each_entry(q, &dev_queue->qdisc_list, list) { list_for_each_entry(q, &dev_queue->qdisc_list, list) {
...@@ -195,6 +194,19 @@ struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle) ...@@ -195,6 +194,19 @@ struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
return NULL; return NULL;
} }
struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
{
unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
struct Qdisc *q = __qdisc_lookup(txq, handle);
if (q)
return q;
}
return NULL;
}
static struct Qdisc *qdisc_leaf(struct Qdisc *p, u32 classid) static struct Qdisc *qdisc_leaf(struct Qdisc *p, u32 classid)
{ {
unsigned long cl; unsigned long cl;
...@@ -462,7 +474,7 @@ dev_graft_qdisc(struct net_device *dev, struct Qdisc *qdisc) ...@@ -462,7 +474,7 @@ dev_graft_qdisc(struct net_device *dev, struct Qdisc *qdisc)
} }
} else { } else {
dev_queue = &dev->tx_queue; dev_queue = netdev_get_tx_queue(dev, 0);
oqdisc = dev_queue->qdisc_sleeping; oqdisc = dev_queue->qdisc_sleeping;
/* Prune old scheduler */ /* Prune old scheduler */
...@@ -742,7 +754,8 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) ...@@ -742,7 +754,8 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
q = dev->rx_queue.qdisc; q = dev->rx_queue.qdisc;
} }
} else { } else {
struct netdev_queue *dev_queue = &dev->tx_queue; struct netdev_queue *dev_queue;
dev_queue = netdev_get_tx_queue(dev, 0);
q = dev_queue->qdisc_sleeping; q = dev_queue->qdisc_sleeping;
} }
if (!q) if (!q)
...@@ -817,7 +830,8 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) ...@@ -817,7 +830,8 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
q = dev->rx_queue.qdisc; q = dev->rx_queue.qdisc;
} }
} else { } else {
struct netdev_queue *dev_queue = &dev->tx_queue; struct netdev_queue *dev_queue;
dev_queue = netdev_get_tx_queue(dev, 0);
q = dev_queue->qdisc_sleeping; q = dev_queue->qdisc_sleeping;
} }
...@@ -899,7 +913,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) ...@@ -899,7 +913,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
tcm->tcm_parent, tcm->tcm_parent, tcm->tcm_parent, tcm->tcm_parent,
tca, &err); tca, &err);
else else
q = qdisc_create(dev, &dev->tx_queue, q = qdisc_create(dev, netdev_get_tx_queue(dev, 0),
tcm->tcm_parent, tcm->tcm_handle, tcm->tcm_parent, tcm->tcm_handle,
tca, &err); tca, &err);
if (q == NULL) { if (q == NULL) {
...@@ -1025,7 +1039,7 @@ static int tc_dump_qdisc(struct sk_buff *skb, struct netlink_callback *cb) ...@@ -1025,7 +1039,7 @@ static int tc_dump_qdisc(struct sk_buff *skb, struct netlink_callback *cb)
if (idx > s_idx) if (idx > s_idx)
s_q_idx = 0; s_q_idx = 0;
q_idx = 0; q_idx = 0;
dev_queue = &dev->tx_queue; dev_queue = netdev_get_tx_queue(dev, 0);
list_for_each_entry(q, &dev_queue->qdisc_list, list) { list_for_each_entry(q, &dev_queue->qdisc_list, list) {
if (q_idx < s_q_idx) { if (q_idx < s_q_idx) {
q_idx++; q_idx++;
...@@ -1098,7 +1112,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg) ...@@ -1098,7 +1112,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
/* Step 1. Determine qdisc handle X:0 */ /* Step 1. Determine qdisc handle X:0 */
dev_queue = &dev->tx_queue; dev_queue = netdev_get_tx_queue(dev, 0);
if (pid != TC_H_ROOT) { if (pid != TC_H_ROOT) {
u32 qid1 = TC_H_MAJ(pid); u32 qid1 = TC_H_MAJ(pid);
...@@ -1275,7 +1289,7 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb) ...@@ -1275,7 +1289,7 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
s_t = cb->args[0]; s_t = cb->args[0];
t = 0; t = 0;
dev_queue = &dev->tx_queue; dev_queue = netdev_get_tx_queue(dev, 0);
list_for_each_entry(q, &dev_queue->qdisc_list, list) { list_for_each_entry(q, &dev_queue->qdisc_list, list) {
if (t < s_t || !q->ops->cl_ops || if (t < s_t || !q->ops->cl_ops ||
(tcm->tcm_parent && (tcm->tcm_parent &&
......
...@@ -40,20 +40,30 @@ ...@@ -40,20 +40,30 @@
*/ */
void qdisc_lock_tree(struct net_device *dev) void qdisc_lock_tree(struct net_device *dev)
__acquires(dev->tx_queue.lock)
__acquires(dev->rx_queue.lock) __acquires(dev->rx_queue.lock)
{ {
spin_lock_bh(&dev->tx_queue.lock); unsigned int i;
local_bh_disable();
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
spin_lock(&txq->lock);
}
spin_lock(&dev->rx_queue.lock); spin_lock(&dev->rx_queue.lock);
} }
EXPORT_SYMBOL(qdisc_lock_tree); EXPORT_SYMBOL(qdisc_lock_tree);
void qdisc_unlock_tree(struct net_device *dev) void qdisc_unlock_tree(struct net_device *dev)
__releases(dev->rx_queue.lock) __releases(dev->rx_queue.lock)
__releases(dev->tx_queue.lock)
{ {
unsigned int i;
spin_unlock(&dev->rx_queue.lock); spin_unlock(&dev->rx_queue.lock);
spin_unlock_bh(&dev->tx_queue.lock); for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
spin_unlock(&txq->lock);
}
local_bh_enable();
} }
EXPORT_SYMBOL(qdisc_unlock_tree); EXPORT_SYMBOL(qdisc_unlock_tree);
...@@ -212,22 +222,37 @@ void __qdisc_run(struct netdev_queue *txq) ...@@ -212,22 +222,37 @@ void __qdisc_run(struct netdev_queue *txq)
static void dev_watchdog(unsigned long arg) static void dev_watchdog(unsigned long arg)
{ {
struct net_device *dev = (struct net_device *)arg; struct net_device *dev = (struct net_device *)arg;
struct netdev_queue *txq = &dev->tx_queue;
netif_tx_lock(dev); netif_tx_lock(dev);
if (txq->qdisc != &noop_qdisc) { if (!qdisc_tx_is_noop(dev)) {
if (netif_device_present(dev) && if (netif_device_present(dev) &&
netif_running(dev) && netif_running(dev) &&
netif_carrier_ok(dev)) { netif_carrier_ok(dev)) {
if (netif_queue_stopped(dev) && int some_queue_stopped = 0;
time_after(jiffies, dev->trans_start + dev->watchdog_timeo)) { unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq;
txq = netdev_get_tx_queue(dev, i);
if (netif_tx_queue_stopped(txq)) {
some_queue_stopped = 1;
break;
}
}
printk(KERN_INFO "NETDEV WATCHDOG: %s: transmit timed out\n", if (some_queue_stopped &&
time_after(jiffies, (dev->trans_start +
dev->watchdog_timeo))) {
printk(KERN_INFO "NETDEV WATCHDOG: %s: "
"transmit timed out\n",
dev->name); dev->name);
dev->tx_timeout(dev); dev->tx_timeout(dev);
WARN_ON_ONCE(1); WARN_ON_ONCE(1);
} }
if (!mod_timer(&dev->watchdog_timer, round_jiffies(jiffies + dev->watchdog_timeo))) if (!mod_timer(&dev->watchdog_timer,
round_jiffies(jiffies +
dev->watchdog_timeo)))
dev_hold(dev); dev_hold(dev);
} }
} }
...@@ -542,9 +567,55 @@ void qdisc_destroy(struct Qdisc *qdisc) ...@@ -542,9 +567,55 @@ void qdisc_destroy(struct Qdisc *qdisc)
} }
EXPORT_SYMBOL(qdisc_destroy); EXPORT_SYMBOL(qdisc_destroy);
static bool dev_all_qdisc_sleeping_noop(struct net_device *dev)
{
unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
if (txq->qdisc_sleeping != &noop_qdisc)
return false;
}
return true;
}
static void attach_one_default_qdisc(struct net_device *dev,
struct netdev_queue *dev_queue,
void *_unused)
{
struct Qdisc *qdisc;
if (dev->tx_queue_len) {
qdisc = qdisc_create_dflt(dev, dev_queue,
&pfifo_fast_ops, TC_H_ROOT);
if (!qdisc) {
printk(KERN_INFO "%s: activation failed\n", dev->name);
return;
}
list_add_tail(&qdisc->list, &dev_queue->qdisc_list);
} else {
qdisc = &noqueue_qdisc;
}
dev_queue->qdisc_sleeping = qdisc;
}
static void transition_one_qdisc(struct net_device *dev,
struct netdev_queue *dev_queue,
void *_need_watchdog)
{
int *need_watchdog_p = _need_watchdog;
spin_lock_bh(&dev_queue->lock);
rcu_assign_pointer(dev_queue->qdisc, dev_queue->qdisc_sleeping);
if (dev_queue->qdisc != &noqueue_qdisc)
*need_watchdog_p = 1;
spin_unlock_bh(&dev_queue->lock);
}
void dev_activate(struct net_device *dev) void dev_activate(struct net_device *dev)
{ {
struct netdev_queue *txq = &dev->tx_queue; int need_watchdog;
/* No queueing discipline is attached to device; /* No queueing discipline is attached to device;
create default one i.e. pfifo_fast for devices, create default one i.e. pfifo_fast for devices,
...@@ -552,39 +623,27 @@ void dev_activate(struct net_device *dev) ...@@ -552,39 +623,27 @@ void dev_activate(struct net_device *dev)
virtual interfaces virtual interfaces
*/ */
if (txq->qdisc_sleeping == &noop_qdisc) { if (dev_all_qdisc_sleeping_noop(dev))
struct Qdisc *qdisc; netdev_for_each_tx_queue(dev, attach_one_default_qdisc, NULL);
if (dev->tx_queue_len) {
qdisc = qdisc_create_dflt(dev, txq,
&pfifo_fast_ops,
TC_H_ROOT);
if (qdisc == NULL) {
printk(KERN_INFO "%s: activation failed\n", dev->name);
return;
}
list_add_tail(&qdisc->list, &txq->qdisc_list);
} else {
qdisc = &noqueue_qdisc;
}
txq->qdisc_sleeping = qdisc;
}
if (!netif_carrier_ok(dev)) if (!netif_carrier_ok(dev))
/* Delay activation until next carrier-on event */ /* Delay activation until next carrier-on event */
return; return;
spin_lock_bh(&txq->lock); need_watchdog = 0;
rcu_assign_pointer(txq->qdisc, txq->qdisc_sleeping); netdev_for_each_tx_queue(dev, transition_one_qdisc, &need_watchdog);
if (txq->qdisc != &noqueue_qdisc) {
if (need_watchdog) {
dev->trans_start = jiffies; dev->trans_start = jiffies;
dev_watchdog_up(dev); dev_watchdog_up(dev);
} }
spin_unlock_bh(&txq->lock);
} }
static void dev_deactivate_queue(struct netdev_queue *dev_queue, static void dev_deactivate_queue(struct net_device *dev,
struct Qdisc *qdisc_default) struct netdev_queue *dev_queue,
void *_qdisc_default)
{ {
struct Qdisc *qdisc_default = _qdisc_default;
struct Qdisc *qdisc; struct Qdisc *qdisc;
struct sk_buff *skb; struct sk_buff *skb;
...@@ -603,12 +662,35 @@ static void dev_deactivate_queue(struct netdev_queue *dev_queue, ...@@ -603,12 +662,35 @@ static void dev_deactivate_queue(struct netdev_queue *dev_queue,
kfree_skb(skb); kfree_skb(skb);
} }
static bool some_qdisc_is_running(struct net_device *dev, int lock)
{
unsigned int i;
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *dev_queue;
int val;
dev_queue = netdev_get_tx_queue(dev, i);
if (lock)
spin_lock_bh(&dev_queue->lock);
val = test_bit(__QUEUE_STATE_QDISC_RUNNING, &dev_queue->state);
if (lock)
spin_unlock_bh(&dev_queue->lock);
if (val)
return true;
}
return false;
}
void dev_deactivate(struct net_device *dev) void dev_deactivate(struct net_device *dev)
{ {
struct netdev_queue *dev_queue = &dev->tx_queue; bool running;
int running;
dev_deactivate_queue(dev_queue, &noop_qdisc); netdev_for_each_tx_queue(dev, dev_deactivate_queue, &noop_qdisc);
dev_watchdog_down(dev); dev_watchdog_down(dev);
...@@ -617,17 +699,14 @@ void dev_deactivate(struct net_device *dev) ...@@ -617,17 +699,14 @@ void dev_deactivate(struct net_device *dev)
/* Wait for outstanding qdisc_run calls. */ /* Wait for outstanding qdisc_run calls. */
do { do {
while (test_bit(__QUEUE_STATE_QDISC_RUNNING, &dev_queue->state)) while (some_qdisc_is_running(dev, 0))
yield(); yield();
/* /*
* Double-check inside queue lock to ensure that all effects * Double-check inside queue lock to ensure that all effects
* of the queue run are visible when we return. * of the queue run are visible when we return.
*/ */
spin_lock_bh(&dev_queue->lock); running = some_qdisc_is_running(dev, 1);
running = test_bit(__QUEUE_STATE_QDISC_RUNNING,
&dev_queue->state);
spin_unlock_bh(&dev_queue->lock);
/* /*
* The running flag should never be set at this point because * The running flag should never be set at this point because
...@@ -642,8 +721,10 @@ void dev_deactivate(struct net_device *dev) ...@@ -642,8 +721,10 @@ void dev_deactivate(struct net_device *dev)
static void dev_init_scheduler_queue(struct net_device *dev, static void dev_init_scheduler_queue(struct net_device *dev,
struct netdev_queue *dev_queue, struct netdev_queue *dev_queue,
struct Qdisc *qdisc) void *_qdisc)
{ {
struct Qdisc *qdisc = _qdisc;
dev_queue->qdisc = qdisc; dev_queue->qdisc = qdisc;
dev_queue->qdisc_sleeping = qdisc; dev_queue->qdisc_sleeping = qdisc;
INIT_LIST_HEAD(&dev_queue->qdisc_list); INIT_LIST_HEAD(&dev_queue->qdisc_list);
...@@ -652,18 +733,19 @@ static void dev_init_scheduler_queue(struct net_device *dev, ...@@ -652,18 +733,19 @@ static void dev_init_scheduler_queue(struct net_device *dev,
void dev_init_scheduler(struct net_device *dev) void dev_init_scheduler(struct net_device *dev)
{ {
qdisc_lock_tree(dev); qdisc_lock_tree(dev);
dev_init_scheduler_queue(dev, &dev->tx_queue, &noop_qdisc); netdev_for_each_tx_queue(dev, dev_init_scheduler_queue, &noop_qdisc);
dev_init_scheduler_queue(dev, &dev->rx_queue, NULL); dev_init_scheduler_queue(dev, &dev->rx_queue, NULL);
qdisc_unlock_tree(dev); qdisc_unlock_tree(dev);
setup_timer(&dev->watchdog_timer, dev_watchdog, (unsigned long)dev); setup_timer(&dev->watchdog_timer, dev_watchdog, (unsigned long)dev);
} }
static void dev_shutdown_scheduler_queue(struct net_device *dev, static void shutdown_scheduler_queue(struct net_device *dev,
struct netdev_queue *dev_queue, struct netdev_queue *dev_queue,
struct Qdisc *qdisc_default) void *_qdisc_default)
{ {
struct Qdisc *qdisc = dev_queue->qdisc_sleeping; struct Qdisc *qdisc = dev_queue->qdisc_sleeping;
struct Qdisc *qdisc_default = _qdisc_default;
if (qdisc) { if (qdisc) {
dev_queue->qdisc = qdisc_default; dev_queue->qdisc = qdisc_default;
...@@ -676,8 +758,8 @@ static void dev_shutdown_scheduler_queue(struct net_device *dev, ...@@ -676,8 +758,8 @@ static void dev_shutdown_scheduler_queue(struct net_device *dev,
void dev_shutdown(struct net_device *dev) void dev_shutdown(struct net_device *dev)
{ {
qdisc_lock_tree(dev); qdisc_lock_tree(dev);
dev_shutdown_scheduler_queue(dev, &dev->tx_queue, &noop_qdisc); netdev_for_each_tx_queue(dev, shutdown_scheduler_queue, &noop_qdisc);
dev_shutdown_scheduler_queue(dev, &dev->rx_queue, NULL); shutdown_scheduler_queue(dev, &dev->rx_queue, NULL);
BUG_TRAP(!timer_pending(&dev->watchdog_timer)); BUG_TRAP(!timer_pending(&dev->watchdog_timer));
qdisc_unlock_tree(dev); qdisc_unlock_tree(dev);
} }
...@@ -111,7 +111,7 @@ teql_dequeue(struct Qdisc* sch) ...@@ -111,7 +111,7 @@ teql_dequeue(struct Qdisc* sch)
struct sk_buff *skb; struct sk_buff *skb;
skb = __skb_dequeue(&dat->q); skb = __skb_dequeue(&dat->q);
dat_queue = &dat->m->dev->tx_queue; dat_queue = netdev_get_tx_queue(dat->m->dev, 0);
if (skb == NULL) { if (skb == NULL) {
struct net_device *m = qdisc_dev(dat_queue->qdisc); struct net_device *m = qdisc_dev(dat_queue->qdisc);
if (m) { if (m) {
...@@ -155,10 +155,13 @@ teql_destroy(struct Qdisc* sch) ...@@ -155,10 +155,13 @@ teql_destroy(struct Qdisc* sch)
if (q == master->slaves) { if (q == master->slaves) {
master->slaves = NEXT_SLAVE(q); master->slaves = NEXT_SLAVE(q);
if (q == master->slaves) { if (q == master->slaves) {
struct netdev_queue *txq;
txq = netdev_get_tx_queue(master->dev, 0);
master->slaves = NULL; master->slaves = NULL;
spin_lock_bh(&master->dev->tx_queue.lock); spin_lock_bh(&txq->lock);
qdisc_reset(master->dev->tx_queue.qdisc); qdisc_reset(txq->qdisc);
spin_unlock_bh(&master->dev->tx_queue.lock); spin_unlock_bh(&txq->lock);
} }
} }
skb_queue_purge(&dat->q); skb_queue_purge(&dat->q);
...@@ -218,7 +221,8 @@ static int teql_qdisc_init(struct Qdisc *sch, struct nlattr *opt) ...@@ -218,7 +221,8 @@ static int teql_qdisc_init(struct Qdisc *sch, struct nlattr *opt)
static int static int
__teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device *dev) __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device *dev)
{ {
struct teql_sched_data *q = qdisc_priv(dev->tx_queue.qdisc); struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, 0);
struct teql_sched_data *q = qdisc_priv(dev_queue->qdisc);
struct neighbour *mn = skb->dst->neighbour; struct neighbour *mn = skb->dst->neighbour;
struct neighbour *n = q->ncache; struct neighbour *n = q->ncache;
...@@ -254,7 +258,8 @@ __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device * ...@@ -254,7 +258,8 @@ __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device *
static inline int teql_resolve(struct sk_buff *skb, static inline int teql_resolve(struct sk_buff *skb,
struct sk_buff *skb_res, struct net_device *dev) struct sk_buff *skb_res, struct net_device *dev)
{ {
if (dev->tx_queue.qdisc == &noop_qdisc) struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
if (txq->qdisc == &noop_qdisc)
return -ENODEV; return -ENODEV;
if (dev->header_ops == NULL || if (dev->header_ops == NULL ||
...@@ -285,8 +290,10 @@ static int teql_master_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -285,8 +290,10 @@ static int teql_master_xmit(struct sk_buff *skb, struct net_device *dev)
do { do {
struct net_device *slave = qdisc_dev(q); struct net_device *slave = qdisc_dev(q);
struct netdev_queue *slave_txq;
if (slave->tx_queue.qdisc_sleeping != q) slave_txq = netdev_get_tx_queue(slave, 0);
if (slave_txq->qdisc_sleeping != q)
continue; continue;
if (netif_queue_stopped(slave) || if (netif_queue_stopped(slave) ||
__netif_subqueue_stopped(slave, subq) || __netif_subqueue_stopped(slave, subq) ||
......
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