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Message-Id: <20080703.000436.77009639.davem@davemloft.net>
Date: Thu, 03 Jul 2008 00:04:36 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: netdev@...r.kernel.org
CC: vinay@...ux.vnet.ibm.com, krkumar2@...ibm.com, mchan@...adcom.com,
Matheos.Worku@....COM, linux-wireless@...r.kernel.org
Subject: [PATCH 24/39]: 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: David S. Miller <davem@...emloft.net>
---
drivers/net/bonding/bond_main.c | 6 +-
drivers/net/hamradio/bpqether.c | 6 +-
drivers/net/ifb.c | 12 ++-
drivers/net/macvlan.c | 6 +-
drivers/net/wireless/hostap/hostap_hw.c | 6 +-
include/linux/netdevice.h | 62 +++++++++--
include/net/sch_generic.h | 41 +++++---
net/8021q/vlan_dev.c | 10 +-
net/core/dev.c | 41 ++++++--
net/core/pktgen.c | 2 +-
net/core/rtnetlink.c | 2 +-
net/mac80211/main.c | 4 +-
net/mac80211/wme.c | 12 +-
net/netrom/af_netrom.c | 6 +-
net/rose/af_rose.c | 6 +-
net/sched/cls_api.c | 4 +-
net/sched/sch_api.c | 32 ++++--
net/sched/sch_generic.c | 178 ++++++++++++++++++++++--------
net/sched/sch_teql.c | 21 +++--
19 files changed, 325 insertions(+), 132 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 3f4d87e..39cbb04 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -5019,7 +5019,9 @@ 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 *dev_queue)
+static void bond_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
lockdep_set_class(&dev_queue->_xmit_lock,
&bonding_netdev_xmit_lock_key);
@@ -5027,7 +5029,7 @@ static void bond_set_lockdep_class_one(struct netdev_queue *dev_queue)
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.
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index b20acb0..daea716 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -124,14 +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 *dev_queue)
+static void bpq_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
lockdep_set_class(&dev_queue->_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);
+ netdev_for_each_tx_queue(dev, bpq_set_lockdep_class_one, NULL);
}
/* ------------------------------------------------------------------------ */
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index ccbd655..897b05e 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -229,14 +229,20 @@ module_param(numifbs, int, 0);
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
- * 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.
*/
static struct lock_class_key ifb_tx_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)
{
@@ -258,7 +264,7 @@ static int __init ifb_init_one(int index)
if (err < 0)
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);
return 0;
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 42c463d..37fdbb7 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -277,7 +277,9 @@ 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 *dev_queue)
+static void macvlan_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
lockdep_set_class(&dev_queue->_xmit_lock,
&macvlan_netdev_xmit_lock_key);
@@ -285,7 +287,7 @@ static void macvlan_set_lockdep_class_one(struct netdev_queue *dev_queue)
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)
diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c
index 76fa737..be85f95 100644
--- a/drivers/net/wireless/hostap/hostap_hw.c
+++ b/drivers/net/wireless/hostap/hostap_hw.c
@@ -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 void prism2_set_lockdep_class_one(struct netdev_queue *dev_queue)
+static void prism2_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
lockdep_set_class(&dev_queue->_xmit_lock,
&hostap_netdev_xmit_lock_key);
@@ -3110,7 +3112,7 @@ static void prism2_set_lockdep_class_one(struct netdev_queue *dev_queue)
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 *
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 2ab4d92..6bb3f8c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -640,7 +640,9 @@ struct net_device
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
struct netdev_queue rx_queue;
- struct netdev_queue tx_queue;
+
+ struct netdev_queue *_tx;
+ unsigned int num_tx_queues;
unsigned long tx_queue_len; /* Max frames per queue allowed */
/*
@@ -761,6 +763,28 @@ struct net_device
#define NETDEV_ALIGN 32
#define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
+extern struct netdev_queue *dev_pick_tx(struct net_device *dev,
+ struct sk_buff *skb);
+
+static inline
+struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
+ 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)
+{
+ int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++)
+ f(dev, &dev->_tx[i], arg);
+}
+
/*
* Net namespace inlines
*/
@@ -961,7 +985,7 @@ static inline void netif_schedule_queue(struct netdev_queue *dev_queue)
static inline void netif_schedule(struct net_device *dev)
{
- netif_schedule_queue(&dev->tx_queue);
+ netif_schedule_queue(netdev_get_tx_queue(dev, 0));
}
/**
@@ -977,7 +1001,7 @@ static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
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));
}
/**
@@ -1001,7 +1025,7 @@ static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
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));
}
/**
@@ -1018,7 +1042,7 @@ static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
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));
}
/**
@@ -1034,7 +1058,7 @@ static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
static inline int netif_queue_stopped(const struct net_device *dev)
{
- return netif_tx_queue_stopped(&dev->tx_queue);
+ return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
}
/**
@@ -1118,7 +1142,7 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
#endif
if (test_and_clear_bit(__QUEUE_STATE_XOFF,
&dev->egress_subqueue[queue_index].state))
- __netif_schedule(&dev->tx_queue);
+ __netif_schedule(netdev_get_tx_queue(dev, 0));
}
/**
@@ -1414,7 +1438,13 @@ static inline void __netif_tx_lock(struct netdev_queue *dev_queue, int cpu)
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;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+ __netif_tx_lock(txq, cpu);
+ }
}
static inline void __netif_tx_lock_bh(struct netdev_queue *dev_queue)
@@ -1425,7 +1455,8 @@ static inline void __netif_tx_lock_bh(struct netdev_queue *dev_queue)
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 *dev_queue)
@@ -1438,7 +1469,7 @@ static inline int __netif_tx_trylock(struct netdev_queue *dev_queue)
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 *dev_queue)
@@ -1449,7 +1480,13 @@ static inline void __netif_tx_unlock(struct netdev_queue *dev_queue)
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 *dev_queue)
@@ -1460,7 +1497,8 @@ static inline void __netif_tx_unlock_bh(struct netdev_queue *dev_queue)
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, dev_queue, cpu) { \
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index bfb05a7..cc5ac9d 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -188,36 +188,45 @@ extern void tcf_destroy_chain(struct tcf_proto *fl);
/* Reset all TX qdiscs of a device. */
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? */
static inline bool qdisc_all_tx_empty(const struct net_device *dev)
{
- struct netdev_queue *txq = &dev->tx_queue;
-
- /* XXX This is not correct but it is good enough for the
- * XXX one place that wants this, IRDA. If we wanted to
- * XXX do this right, we'd need to add a qdisc op to
- * XXX probe for the queue state.
- */
- return skb_queue_empty(&txq->qdisc->q);
+ unsigned int i;
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+ if (!skb_queue_empty(&txq->qdisc->q))
+ return false;
+ }
+ return true;
}
/* Are any of the TX qdiscs changing? */
static inline bool qdisc_tx_changing(struct net_device *dev)
{
- struct netdev_queue *txq = &dev->tx_queue;
-
- return (txq->qdisc != txq->qdisc_sleeping);
+ 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 != 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(struct net_device *dev)
{
- struct netdev_queue *txq = &dev->tx_queue;
-
- return (txq->qdisc == &noop_qdisc);
+ 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 != &noop_qdisc)
+ return false;
+ }
+ return true;
}
static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 6ad4a8c..5283d21 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -645,16 +645,18 @@ 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 *dev_queue,
- int subclass)
+static void vlan_dev_set_lockdep_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_subclass)
{
lockdep_set_class_and_subclass(&dev_queue->_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)
{
- 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 = {
diff --git a/net/core/dev.c b/net/core/dev.c
index 5209a3f..4b1d39f 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1666,6 +1666,13 @@ out_kfree_skb:
* --BLG
*/
+struct netdev_queue *dev_pick_tx(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ return netdev_get_tx_queue(dev, 0);
+}
+EXPORT_SYMBOL(dev_pick_tx);
+
int dev_queue_xmit(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
@@ -1702,7 +1709,7 @@ int dev_queue_xmit(struct sk_buff *skb)
}
gso:
- txq = &dev->tx_queue;
+ txq = dev_pick_tx(dev, skb);
spin_lock_prefetch(&txq->lock);
/* Disable soft irqs for various locks below. Also
@@ -3760,8 +3767,9 @@ 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)
+static void __netdev_init_queue_locks_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
spin_lock_init(&dev_queue->_xmit_lock);
netdev_set_lockdep_class(&dev_queue->_xmit_lock, dev->type);
@@ -3770,8 +3778,8 @@ static void __netdev_init_queue_locks_one(struct netdev_queue *dev_queue,
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);
+ netdev_for_each_tx_queue(dev, __netdev_init_queue_locks_one, NULL);
+ __netdev_init_queue_locks_one(dev, &dev->rx_queue, NULL);
}
/**
@@ -4090,7 +4098,8 @@ static struct net_device_stats *internal_stats(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);
queue->dev = dev;
@@ -4098,8 +4107,8 @@ static void netdev_init_one_queue(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->tx_queue);
+ netdev_init_one_queue(dev, &dev->rx_queue, NULL);
+ netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
}
/**
@@ -4116,9 +4125,10 @@ static void netdev_init_queues(struct net_device *dev)
struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
void (*setup)(struct net_device *), unsigned int queue_count)
{
- void *p;
+ struct netdev_queue *tx;
struct net_device *dev;
int alloc_size;
+ void *p;
BUG_ON(strlen(name) >= sizeof(dev->name));
@@ -4138,11 +4148,22 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
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 *)
(((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
dev->padded = (char *)dev - (char *)p;
dev_net_set(dev, &init_net);
+ dev->_tx = tx;
+ dev->num_tx_queues = queue_count;
+
if (sizeof_priv) {
dev->priv = ((char *)dev +
((sizeof(struct net_device) +
@@ -4176,6 +4197,8 @@ void free_netdev(struct net_device *dev)
{
release_net(dev_net(dev));
+ kfree(dev->_tx);
+
/* Compatibility with error handling in drivers */
if (dev->reg_state == NETREG_UNINITIALIZED) {
kfree((char *)dev - dev->padded);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index f6dc5b3..6aeff58 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3286,7 +3286,7 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
}
}
- odev_queue = &odev->tx_queue;
+ odev_queue = dev_pick_tx(odev, pkt_dev->skb);
if (netif_tx_queue_stopped(odev_queue) ||
need_resched()) {
idle_start = getCurUs();
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 8ef9f1d..71edb8b 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -636,7 +636,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
if (dev->master)
NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
- txq = &dev->tx_queue;
+ txq = netdev_get_tx_queue(dev, 0);
if (txq->qdisc_sleeping)
NLA_PUT_STRING(skb, IFLA_QDISC, txq->qdisc_sleeping->ops->id);
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 6439d3b..45b992a 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -633,7 +633,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
/* ensure that TX flow won't interrupt us
* until the end of the call to requeue function */
- dev_queue = &local->mdev->tx_queue;
+ dev_queue = netdev_get_tx_queue(local->mdev, 0);
spin_lock_bh(&dev_queue->lock);
/* create a new queue for this aggregation */
@@ -858,7 +858,7 @@ 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
* the content of the qdiscs */
- dev_queue = &local->mdev->tx_queue;
+ dev_queue = netdev_get_tx_queue(local->mdev, 0);
spin_lock_bh(&dev_queue->lock);
/* remove the queue for this aggregation */
ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 811d0de..42b1fbf 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -576,7 +576,7 @@ static struct Qdisc_ops wme_qdisc_ops __read_mostly =
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;
qdisc = qdisc_create_dflt(dev, txq,
@@ -598,7 +598,7 @@ void ieee80211_install_qdisc(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;
}
@@ -619,7 +619,7 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
struct sta_info *sta, u16 tid)
{
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 =
qdisc_priv(txq->qdisc_sleeping);
DECLARE_MAC_BUF(mac);
@@ -654,14 +654,14 @@ 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,
struct sta_info *sta, u16 tid,
u8 requeue)
{
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 =
qdisc_priv(txq->qdisc_sleeping);
int agg_queue = sta->tid_to_tx_q[tid];
@@ -678,7 +678,7 @@ void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
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 ieee80211_sched_data *q = qdisc_priv(root_qd);
struct Qdisc *qdisc = q->queues[queue];
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 73d1e14..22f3736 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -74,14 +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 *dev_queue)
+static void nr_set_lockdep_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
lockdep_set_class(&dev_queue->_xmit_lock, &nr_netdev_xmit_lock_key);
}
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);
}
/*
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 37046f9..987ee73 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -75,14 +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 *dev_queue)
+static void rose_set_lockdep_one(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_unused)
{
lockdep_set_class(&dev_queue->_xmit_lock, &rose_netdev_xmit_lock_key);
}
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);
}
/*
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index b483bbe..d0b0a9b 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -166,7 +166,7 @@ replay:
/* Find qdisc */
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;
parent = q->handle;
} else {
@@ -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)
return skb->len;
- dev_queue = &dev->tx_queue;
+ dev_queue = netdev_get_tx_queue(dev, 0);
if (!tcm->tcm_parent)
q = dev_queue->qdisc_sleeping;
else
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 8de8bf5..8ed69b6 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -183,9 +183,8 @@ EXPORT_SYMBOL(unregister_qdisc);
(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;
list_for_each_entry(q, &dev_queue->qdisc_list, list) {
@@ -195,6 +194,19 @@ struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
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)
{
unsigned long cl;
@@ -358,7 +370,7 @@ dev_graft_qdisc(struct net_device *dev, struct Qdisc *qdisc)
}
} else {
- dev_queue = &dev->tx_queue;
+ dev_queue = netdev_get_tx_queue(dev, 0);
oqdisc = dev_queue->qdisc_sleeping;
/* Prune old scheduler */
@@ -638,7 +650,8 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
q = dev->rx_queue.qdisc;
}
} 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;
}
if (!q)
@@ -713,7 +726,8 @@ replay:
q = dev->rx_queue.qdisc;
}
} 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;
}
@@ -795,7 +809,7 @@ create_n_graft:
tcm->tcm_parent, tcm->tcm_parent,
tca, &err);
else
- q = qdisc_create(dev, &dev->tx_queue,
+ q = qdisc_create(dev, netdev_get_tx_queue(dev, 0),
tcm->tcm_parent, tcm->tcm_handle,
tca, &err);
if (q == NULL) {
@@ -921,7 +935,7 @@ static int tc_dump_qdisc(struct sk_buff *skb, struct netlink_callback *cb)
if (idx > s_idx)
s_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) {
if (q_idx < s_q_idx) {
q_idx++;
@@ -994,7 +1008,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
/* 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) {
u32 qid1 = TC_H_MAJ(pid);
@@ -1171,7 +1185,7 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
s_t = cb->args[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) {
if (t < s_t || !q->ops->cl_ops ||
(tcm->tcm_parent &&
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 1092d54..76575fe 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -40,20 +40,30 @@
*/
void qdisc_lock_tree(struct net_device *dev)
- __acquires(dev->tx_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);
}
EXPORT_SYMBOL(qdisc_lock_tree);
void qdisc_unlock_tree(struct net_device *dev)
__releases(dev->rx_queue.lock)
- __releases(dev->tx_queue.lock)
{
+ unsigned int i;
+
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);
@@ -211,22 +221,37 @@ void __qdisc_run(struct netdev_queue *dev_queue)
static void dev_watchdog(unsigned long arg)
{
struct net_device *dev = (struct net_device *)arg;
- struct netdev_queue *dev_queue = &dev->tx_queue;
netif_tx_lock(dev);
- if (dev_queue->qdisc != &noop_qdisc) {
+ if (!qdisc_tx_is_noop(dev)) {
if (netif_device_present(dev) &&
netif_running(dev) &&
netif_carrier_ok(dev)) {
- if (netif_queue_stopped(dev) &&
- time_after(jiffies, dev->trans_start + dev->watchdog_timeo)) {
+ int some_queue_stopped = 0;
+ 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->tx_timeout(dev);
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);
}
}
@@ -541,9 +566,55 @@ void qdisc_destroy(struct Qdisc *qdisc)
}
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)
{
- struct netdev_queue *dev_queue = &dev->tx_queue;
+ int need_watchdog;
/* No queueing discipline is attached to device;
create default one i.e. pfifo_fast for devices,
@@ -551,39 +622,27 @@ void dev_activate(struct net_device *dev)
virtual interfaces
*/
- if (dev_queue->qdisc_sleeping == &noop_qdisc) {
- struct Qdisc *qdisc;
- if (dev->tx_queue_len) {
- qdisc = qdisc_create_dflt(dev, dev_queue,
- &pfifo_fast_ops,
- TC_H_ROOT);
- if (qdisc == NULL) {
- 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;
- }
+ if (dev_all_qdisc_sleeping_noop(dev))
+ netdev_for_each_tx_queue(dev, attach_one_default_qdisc, NULL);
if (!netif_carrier_ok(dev))
/* Delay activation until next carrier-on event */
return;
- spin_lock_bh(&dev_queue->lock);
- rcu_assign_pointer(dev_queue->qdisc, dev_queue->qdisc_sleeping);
- if (dev_queue->qdisc != &noqueue_qdisc) {
+ need_watchdog = 0;
+ netdev_for_each_tx_queue(dev, transition_one_qdisc, &need_watchdog);
+
+ if (need_watchdog) {
dev->trans_start = jiffies;
dev_watchdog_up(dev);
}
- spin_unlock_bh(&dev_queue->lock);
}
-static void dev_deactivate_queue(struct netdev_queue *dev_queue,
- struct Qdisc *qdisc_default)
+static void dev_deactivate_queue(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_qdisc_default)
{
+ struct Qdisc *qdisc_default = _qdisc_default;
struct Qdisc *qdisc;
struct sk_buff *skb;
@@ -602,12 +661,35 @@ static void dev_deactivate_queue(struct netdev_queue *dev_queue,
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)
{
- struct netdev_queue *dev_queue = &dev->tx_queue;
- int running;
+ bool running;
- dev_deactivate_queue(dev_queue, &noop_qdisc);
+ netdev_for_each_tx_queue(dev, dev_deactivate_queue, &noop_qdisc);
dev_watchdog_down(dev);
@@ -616,17 +698,14 @@ void dev_deactivate(struct net_device *dev)
/* Wait for outstanding qdisc_run calls. */
do {
- while (test_bit(__QUEUE_STATE_QDISC_RUNNING, &dev_queue->state))
+ while (some_qdisc_is_running(dev, 0))
yield();
/*
* Double-check inside queue lock to ensure that all effects
* of the queue run are visible when we return.
*/
- spin_lock_bh(&dev_queue->lock);
- running = test_bit(__QUEUE_STATE_QDISC_RUNNING,
- &dev_queue->state);
- spin_unlock_bh(&dev_queue->lock);
+ running = some_qdisc_is_running(dev, 1);
/*
* The running flag should never be set at this point because
@@ -641,8 +720,10 @@ void dev_deactivate(struct net_device *dev)
static void dev_init_scheduler_queue(struct net_device *dev,
struct netdev_queue *dev_queue,
- struct Qdisc *qdisc)
+ void *_qdisc)
{
+ struct Qdisc *qdisc = _qdisc;
+
dev_queue->qdisc = qdisc;
dev_queue->qdisc_sleeping = qdisc;
INIT_LIST_HEAD(&dev_queue->qdisc_list);
@@ -651,18 +732,19 @@ static void dev_init_scheduler_queue(struct net_device *dev,
void dev_init_scheduler(struct net_device *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);
qdisc_unlock_tree(dev);
setup_timer(&dev->watchdog_timer, dev_watchdog, (unsigned long)dev);
}
-static void dev_shutdown_scheduler_queue(struct net_device *dev,
- struct netdev_queue *dev_queue,
- struct Qdisc *qdisc_default)
+static void shutdown_scheduler_queue(struct net_device *dev,
+ struct netdev_queue *dev_queue,
+ void *_qdisc_default)
{
struct Qdisc *qdisc = dev_queue->qdisc_sleeping;
+ struct Qdisc *qdisc_default = _qdisc_default;
if (qdisc) {
dev_queue->qdisc = qdisc_default;
@@ -675,8 +757,8 @@ static void dev_shutdown_scheduler_queue(struct net_device *dev,
void dev_shutdown(struct net_device *dev)
{
qdisc_lock_tree(dev);
- dev_shutdown_scheduler_queue(dev, &dev->tx_queue, &noop_qdisc);
- dev_shutdown_scheduler_queue(dev, &dev->rx_queue, NULL);
+ netdev_for_each_tx_queue(dev, shutdown_scheduler_queue, &noop_qdisc);
+ shutdown_scheduler_queue(dev, &dev->rx_queue, NULL);
BUG_TRAP(!timer_pending(&dev->watchdog_timer));
qdisc_unlock_tree(dev);
}
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 16d975f..ade3372 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -111,7 +111,7 @@ teql_dequeue(struct Qdisc* sch)
struct sk_buff *skb;
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) {
struct net_device *m = qdisc_dev(dat_queue->qdisc);
if (m) {
@@ -155,10 +155,13 @@ teql_destroy(struct Qdisc* sch)
if (q == master->slaves) {
master->slaves = NEXT_SLAVE(q);
if (q == master->slaves) {
+ struct netdev_queue *txq;
+
+ txq = netdev_get_tx_queue(master->dev, 0);
master->slaves = NULL;
- spin_lock_bh(&master->dev->tx_queue.lock);
- qdisc_reset(master->dev->tx_queue.qdisc);
- spin_unlock_bh(&master->dev->tx_queue.lock);
+ spin_lock_bh(&txq->lock);
+ qdisc_reset(txq->qdisc);
+ spin_unlock_bh(&txq->lock);
}
}
skb_queue_purge(&dat->q);
@@ -218,7 +221,8 @@ static int teql_qdisc_init(struct Qdisc *sch, struct nlattr *opt)
static int
__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 *n = q->ncache;
@@ -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,
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;
if (dev->header_ops == NULL ||
@@ -285,8 +290,10 @@ restart:
do {
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;
if (__netif_subqueue_stopped(slave, subq) ||
!netif_running(slave)) {
--
1.5.6
--
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