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linux-sg2042
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mac80211: use multi-queue master netdevice 

This patch updates mac80211 and drivers to be multi-queue aware and
use that instead of the internal queue mapping. Also does a number
of cleanups in various pieces of the code that fall out and reduces
internal mac80211 state size.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-05-17 00:57:14 +02:00 committed by John W. Linville
parent eefce91a38
commit e253008360
21 changed files with 158 additions and 132 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ath5k/base.c
View File

@ -2657,7 +2657,7 @@ ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
if (list_empty(&sc->txbuf)) {
ATH5K_ERR(sc, "no further txbuf available, dropping packet\n");
spin_unlock_irqrestore(&sc->txbuflock, flags);
ieee80211_stop_queue(hw, info->queue);
ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
return -1;
}
bf = list_first_entry(&sc->txbuf, struct ath5k_buf, list);

7
drivers/net/wireless/b43/dma.c
View File

@ -1297,7 +1297,8 @@ int b43_dma_tx(struct b43_wldev *dev, struct sk_buff *skb)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
} else {
/* Decide by priority where to put this frame. */
ring = select_ring_by_priority(dev, info->queue);
ring = select_ring_by_priority(
dev, skb_get_queue_mapping(skb));
}
spin_lock_irqsave(&ring->lock, flags);
@ -1315,7 +1316,7 @@ int b43_dma_tx(struct b43_wldev *dev, struct sk_buff *skb)
/* Assign the queue number to the ring (if not already done before)
* so TX status handling can use it. The queue to ring mapping is
* static, so we don't need to store it per frame. */
ring->queue_prio = info->queue;
ring->queue_prio = skb_get_queue_mapping(skb);
err = dma_tx_fragment(ring, skb);
if (unlikely(err == -ENOKEY)) {
@ -1333,7 +1334,7 @@ int b43_dma_tx(struct b43_wldev *dev, struct sk_buff *skb)
if ((free_slots(ring) < SLOTS_PER_PACKET) ||
should_inject_overflow(ring)) {
/* This TX ring is full. */
ieee80211_stop_queue(dev->wl->hw, info->queue);
ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
ring->stopped = 1;
if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
b43dbg(dev->wl, "Stopped TX ring %d\n", ring->index);

8
drivers/net/wireless/b43/pio.c
View File

@ -509,7 +509,7 @@ int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
} else {
/* Decide by priority where to put this frame. */
q = select_queue_by_priority(dev, info->queue);
q = select_queue_by_priority(dev, skb_get_queue_mapping(skb));
}
spin_lock_irqsave(&q->lock, flags);
@ -532,7 +532,7 @@ int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
if (total_len > (q->buffer_size - q->buffer_used)) {
/* Not enough memory on the queue. */
err = -EBUSY;
ieee80211_stop_queue(dev->wl->hw, info->queue);
ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
q->stopped = 1;
goto out_unlock;
}
@ -540,7 +540,7 @@ int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
/* Assign the queue number to the ring (if not already done before)
* so TX status handling can use it. The mac80211-queue to b43-queue
* mapping is static, so we don't need to store it per frame. */
q->queue_prio = info->queue;
q->queue_prio = skb_get_queue_mapping(skb);
err = pio_tx_frame(q, skb);
if (unlikely(err == -ENOKEY)) {
@ -560,7 +560,7 @@ int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
if (((q->buffer_size - q->buffer_used) < roundup(2 + 2 + 6, 4)) ||
(q->free_packet_slots == 0)) {
/* The queue is full. */
ieee80211_stop_queue(dev->wl->hw, info->queue);
ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
q->stopped = 1;
}

3
drivers/net/wireless/b43legacy/dma.c
View File

@ -1325,11 +1325,10 @@ int b43legacy_dma_tx(struct b43legacy_wldev *dev,
struct sk_buff *skb)
{
struct b43legacy_dmaring *ring;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int err = 0;
unsigned long flags;
ring = priority_to_txring(dev, info->queue);
ring = priority_to_txring(dev, skb_get_queue_mapping(skb));
spin_lock_irqsave(&ring->lock, flags);
B43legacy_WARN_ON(!ring->tx);
if (unlikely(free_slots(ring) < SLOTS_PER_PACKET)) {

4
drivers/net/wireless/iwlwifi/iwl-tx.c
View File

@ -696,7 +696,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct iwl_tfd_frame *tfd;
u32 *control_flags;
int txq_id = info->queue;
int txq_id = skb_get_queue_mapping(skb);
struct iwl_tx_queue *txq = NULL;
struct iwl_queue *q = NULL;
dma_addr_t phys_addr;
@ -917,7 +917,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
spin_unlock_irqrestore(&priv->lock, flags);
}
ieee80211_stop_queue(priv->hw, info->queue);
ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
}
return 0;

4
drivers/net/wireless/iwlwifi/iwl3945-base.c
View File

@ -2552,7 +2552,7 @@ static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct iwl3945_tfd_frame *tfd;
u32 *control_flags;
int txq_id = info->queue;
int txq_id = skb_get_queue_mapping(skb);
struct iwl3945_tx_queue *txq = NULL;
struct iwl3945_queue *q = NULL;
dma_addr_t phys_addr;
@ -2765,7 +2765,7 @@ static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
spin_unlock_irqrestore(&priv->lock, flags);
}
ieee80211_stop_queue(priv->hw, info->queue);
ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
}
return 0;

8
drivers/net/wireless/p54/p54common.c
View File

@ -407,7 +407,7 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
last_addr = range->end_addr;
__skb_unlink(entry, &priv->tx_queue);
memset(&info->status, 0, sizeof(info->status));
priv->tx_stats[info->queue].len--;
priv->tx_stats[skb_get_queue_mapping(skb)].len--;
entry_hdr = (struct p54_control_hdr *) entry->data;
entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
@ -551,13 +551,13 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
size_t padding, len;
u8 rate;
current_queue = &priv->tx_stats[info->queue];
current_queue = &priv->tx_stats[skb_get_queue_mapping(skb)];
if (unlikely(current_queue->len > current_queue->limit))
return NETDEV_TX_BUSY;
current_queue->len++;
current_queue->count++;
if (current_queue->len == current_queue->limit)
ieee80211_stop_queue(dev, info->queue);
ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
len = skb->len;
@ -589,7 +589,7 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
memset(txhdr->rateset, rate, 8);
txhdr->wep_key_present = 0;
txhdr->wep_key_len = 0;
txhdr->frame_type = cpu_to_le32(info->queue + 4);
txhdr->frame_type = cpu_to_le32(skb_get_queue_mapping(skb) + 4);
txhdr->magic4 = 0;
txhdr->antenna = (info->antenna_sel_tx == 0) ?
2 : info->antenna_sel_tx - 1;

10
drivers/net/wireless/rt2x00/rt2x00mac.c
View File

@ -102,7 +102,7 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
struct rt2x00_dev *rt2x00dev = hw->priv;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
enum data_queue_qid qid = mac80211_queue_to_qid(tx_info->queue);
enum data_queue_qid qid = skb_get_queue_mapping(skb);
struct data_queue *queue;
u16 frame_control;
@ -149,23 +149,23 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
IEEE80211_TX_CTL_USE_CTS_PROTECT)) &&
!rt2x00dev->ops->hw->set_rts_threshold) {
if (rt2x00queue_available(queue) <= 1) {
ieee80211_stop_queue(rt2x00dev->hw, tx_info->queue);
ieee80211_stop_queue(rt2x00dev->hw, qid);
return NETDEV_TX_BUSY;
}
if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) {
ieee80211_stop_queue(rt2x00dev->hw, tx_info->queue);
ieee80211_stop_queue(rt2x00dev->hw, qid);
return NETDEV_TX_BUSY;
}
}
if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb)) {
ieee80211_stop_queue(rt2x00dev->hw, tx_info->queue);
ieee80211_stop_queue(rt2x00dev->hw, qid);
return NETDEV_TX_BUSY;
}
if (rt2x00queue_full(queue))
ieee80211_stop_queue(rt2x00dev->hw, tx_info->queue);
ieee80211_stop_queue(rt2x00dev->hw, qid);
if (rt2x00dev->ops->lib->kick_tx_queue)
rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, qid);

13
drivers/net/wireless/rt2x00/rt2x00queue.h
View File

@ -79,19 +79,6 @@ enum data_queue_qid {
QID_ATIM,
};
/**
* mac80211_queue_to_qid - Convert mac80211 queue to rt2x00 qid
* @queue: mac80211 queue.
*/
static inline enum data_queue_qid mac80211_queue_to_qid(unsigned int queue)
{
/* Regular TX queues are mapped directly */
if (queue < 4)
return queue;
WARN_ON(1);
return QID_OTHER;
}
/**
* enum skb_frame_desc_flags: Flags for &struct skb_frame_desc
*

4
drivers/net/wireless/rtl8180_dev.c
View File

@ -246,7 +246,7 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
u16 plcp_len = 0;
__le16 rts_duration = 0;
prio = info->queue;
prio = skb_get_queue_mapping(skb);
ring = &priv->tx_ring[prio];
mapping = pci_map_single(priv->pdev, skb->data,
@ -298,7 +298,7 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
entry->flags = cpu_to_le32(tx_flags);
__skb_queue_tail(&ring->queue, skb);
if (ring->entries - skb_queue_len(&ring->queue) < 2)
ieee80211_stop_queue(dev, info->queue);
ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
spin_unlock_irqrestore(&priv->lock, flags);
rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));

20
include/net/mac80211.h
View File

@ -293,7 +293,7 @@ struct ieee80211_tx_info {
s8 tx_rate_idx;
u8 antenna_sel_tx;
u8 queue; /* use skb_queue_mapping soon */
/* 1 byte hole */
union {
struct {
@ -802,6 +802,24 @@ static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr)
memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN);
}
static inline int ieee80211_num_regular_queues(struct ieee80211_hw *hw)
{
#ifdef CONFIG_MAC80211_QOS
return hw->queues;
#else
return 1;
#endif
}
static inline int ieee80211_num_queues(struct ieee80211_hw *hw)
{
#ifdef CONFIG_MAC80211_QOS
return hw->queues + hw->ampdu_queues;
#else
return 1;
#endif
}
static inline struct ieee80211_rate *
ieee80211_get_tx_rate(const struct ieee80211_hw *hw,
const struct ieee80211_tx_info *c)

14
net/mac80211/Kconfig
View File

@ -7,11 +7,23 @@ config MAC80211
select CRC32
select WIRELESS_EXT
select CFG80211
select NET_SCH_FIFO
---help---
This option enables the hardware independent IEEE 802.11
networking stack.
config MAC80211_QOS
def_bool y
depends on MAC80211
depends on NET_SCHED
depends on NETDEVICES_MULTIQUEUE
comment "QoS/HT support disabled"
depends on MAC80211 && !MAC80211_QOS
comment "QoS/HT support needs CONFIG_NET_SCHED"
depends on MAC80211 && !NET_SCHED
comment "QoS/HT support needs CONFIG_NETDEVICES_MULTIQUEUE"
depends on MAC80211 && !NETDEVICES_MULTIQUEUE
menu "Rate control algorithm selection"
depends on MAC80211 != n

2
net/mac80211/Makefile
View File

@ -29,7 +29,7 @@ mac80211-y := \
event.o
mac80211-$(CONFIG_MAC80211_LEDS) += led.o
mac80211-$(CONFIG_NET_SCHED) += wme.o
mac80211-$(CONFIG_MAC80211_QOS) += wme.o
mac80211-$(CONFIG_MAC80211_DEBUGFS) += \
debugfs.o \
debugfs_sta.o \

16
net/mac80211/ieee80211_i.h
View File

@ -594,7 +594,7 @@ struct ieee80211_local {
struct sta_info *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
unsigned long state[IEEE80211_MAX_QUEUES + IEEE80211_MAX_AMPDU_QUEUES];
unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
struct tasklet_struct tx_pending_tasklet;
@ -758,6 +758,15 @@ struct ieee80211_local {
#endif
};
static inline int ieee80211_is_multiqueue(struct ieee80211_local *local)
{
#ifdef CONFIG_MAC80211_QOS
return netif_is_multiqueue(local->mdev);
#else
return 0;
#endif
}
/* this struct represents 802.11n's RA/TID combination */
struct ieee80211_ra_tid {
u8 ra[ETH_ALEN];
@ -827,11 +836,6 @@ static inline struct ieee80211_hw *local_to_hw(
return &local->hw;
}
enum ieee80211_link_state_t {
IEEE80211_LINK_STATE_XOFF = 0,
IEEE80211_LINK_STATE_PENDING,
};
struct sta_attribute {
struct attribute attr;
ssize_t (*show)(const struct sta_info *, char *buf);

2
net/mac80211/iface.c
View File

@ -168,7 +168,7 @@ void ieee80211_if_set_type(struct net_device *dev, int type)
ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
IEEE80211_STA_AUTO_BSSID_SEL |
IEEE80211_STA_AUTO_CHANNEL_SEL;
if (sdata->local->hw.queues >= 4)
if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4)
ifsta->flags |= IEEE80211_STA_WMM_ENABLED;
msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);

29
net/mac80211/main.c
View File

@ -1634,12 +1634,32 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (result < 0)
return result;
/*
* We use the number of queues for feature tests (QoS, HT) internally
* so restrict them appropriately.
*/
#ifdef CONFIG_MAC80211_QOS
if (hw->queues > IEEE80211_MAX_QUEUES)
hw->queues = IEEE80211_MAX_QUEUES;
if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES)
hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES;
if (hw->queues < 4)
hw->ampdu_queues = 0;
#else
hw->queues = 1;
hw->ampdu_queues = 0;
#endif
/* for now, mdev needs sub_if_data :/ */
mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
"wmaster%d", ether_setup);
mdev = alloc_netdev_mq(sizeof(struct ieee80211_sub_if_data),
"wmaster%d", ether_setup,
ieee80211_num_queues(hw));
if (!mdev)
goto fail_mdev_alloc;
if (ieee80211_num_queues(hw) > 1)
mdev->features |= NETIF_F_MULTI_QUEUE;
sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
mdev->ieee80211_ptr = &sdata->wdev;
sdata->wdev.wiphy = local->hw.wiphy;
@ -1728,11 +1748,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
goto fail_wep;
}
if (hw->queues > IEEE80211_MAX_QUEUES)
hw->queues = IEEE80211_MAX_QUEUES;
if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES)
hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES;
ieee80211_install_qdisc(local->mdev);
/* add one default STA interface */

2
net/mac80211/sta_info.c
View File

@ -255,7 +255,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
* sta_rx_agg_session_timer_expired for useage */
sta->timer_to_tid[i] = i;
/* tid to tx queue: initialize according to HW (0 is valid) */
sta->tid_to_tx_q[i] = local->hw.queues + local->hw.ampdu_queues;
sta->tid_to_tx_q[i] = ieee80211_num_queues(&local->hw);
/* rx */
sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE;
sta->ampdu_mlme.tid_rx[i] = NULL;

97
net/mac80211/tx.c
View File

@ -213,18 +213,6 @@ static u16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
return dur;
}
static inline int __ieee80211_queue_stopped(const struct ieee80211_local *local,
int queue)
{
return test_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
}
static inline int __ieee80211_queue_pending(const struct ieee80211_local *local,
int queue)
{
return test_bit(IEEE80211_LINK_STATE_PENDING, &local->state[queue]);
}
static int inline is_ieee80211_device(struct net_device *dev,
struct net_device *master)
{
@ -680,7 +668,8 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
* etc.
*/
if (WARN_ON(tx->flags & IEEE80211_TX_CTL_AMPDU ||
IEEE80211_SKB_CB(tx->skb)->queue >= tx->local->hw.queues))
skb_get_queue_mapping(tx->skb) >=
ieee80211_num_regular_queues(&tx->local->hw)))
return TX_DROP;
first = tx->skb;
@ -1098,11 +1087,9 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int ret, i;
if (!ieee80211_qdisc_installed(local->mdev) &&
__ieee80211_queue_stopped(local, 0)) {
netif_stop_queue(local->mdev);
if (netif_subqueue_stopped(local->mdev, skb))
return IEEE80211_TX_AGAIN;
}
if (skb) {
ieee80211_dump_frame(wiphy_name(local->hw.wiphy),
"TX to low-level driver", skb);
@ -1121,7 +1108,8 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
IEEE80211_TX_CTL_USE_CTS_PROTECT |
IEEE80211_TX_CTL_CLEAR_PS_FILT |
IEEE80211_TX_CTL_FIRST_FRAGMENT);
if (__ieee80211_queue_stopped(local, info->queue))
if (netif_subqueue_stopped(local->mdev,
tx->extra_frag[i]))
return IEEE80211_TX_FRAG_AGAIN;
if (i == tx->num_extra_frag) {
info->tx_rate_idx = tx->last_frag_rate_idx;
@ -1160,9 +1148,11 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb)
ieee80211_tx_result res = TX_DROP, res_prepare;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int ret, i;
int queue = info->queue;
u16 queue;
WARN_ON(__ieee80211_queue_pending(local, queue));
queue = skb_get_queue_mapping(skb);
WARN_ON(test_bit(queue, local->queues_pending));
if (unlikely(skb->len < 10)) {
dev_kfree_skb(skb);
@ -1233,28 +1223,28 @@ retry:
* queues, there's no reason for a driver to reject
* a frame there, warn and drop it.
*/
if (WARN_ON(queue >= local->hw.queues))
if (WARN_ON(queue >= ieee80211_num_regular_queues(&local->hw)))
goto drop;
store = &local->pending_packet[queue];
if (ret == IEEE80211_TX_FRAG_AGAIN)
skb = NULL;
set_bit(IEEE80211_LINK_STATE_PENDING,
&local->state[queue]);
set_bit(queue, local->queues_pending);
smp_mb();
/* When the driver gets out of buffers during sending of
* fragments and calls ieee80211_stop_queue, there is
* a small window between IEEE80211_LINK_STATE_XOFF and
* IEEE80211_LINK_STATE_PENDING flags are set. If a buffer
/*
* When the driver gets out of buffers during sending of
* fragments and calls ieee80211_stop_queue, the netif
* subqueue is stopped. There is, however, a small window
* in which the PENDING bit is not yet set. If a buffer
* gets available in that window (i.e. driver calls
* ieee80211_wake_queue), we would end up with ieee80211_tx
* called with IEEE80211_LINK_STATE_PENDING. Prevent this by
* called with the PENDING bit still set. Prevent this by
* continuing transmitting here when that situation is
* possible to have happened. */
if (!__ieee80211_queue_stopped(local, queue)) {
clear_bit(IEEE80211_LINK_STATE_PENDING,
&local->state[queue]);
* possible to have happened.
*/
if (!__netif_subqueue_stopped(local->mdev, queue)) {
clear_bit(queue, local->queues_pending);
goto retry;
}
store->skb = skb;
@ -1509,7 +1499,8 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
}
/* receiver and we are QoS enabled, use a QoS type frame */
if (sta_flags & WLAN_STA_WME && local->hw.queues >= 4) {
if (sta_flags & WLAN_STA_WME &&
ieee80211_num_regular_queues(&local->hw) >= 4) {
fc |= IEEE80211_STYPE_QOS_DATA;
hdrlen += 2;
}
@ -1661,41 +1652,51 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
return ret;
}
/* helper functions for pending packets for when queues are stopped */
/*
* ieee80211_clear_tx_pending may not be called in a context where
* it is possible that it packets could come in again.
*/
void ieee80211_clear_tx_pending(struct ieee80211_local *local)
{
int i, j;
struct ieee80211_tx_stored_packet *store;
for (i = 0; i < local->hw.queues; i++) {
if (!__ieee80211_queue_pending(local, i))
for (i = 0; i < ieee80211_num_regular_queues(&local->hw); i++) {
if (!test_bit(i, local->queues_pending))
continue;
store = &local->pending_packet[i];
kfree_skb(store->skb);
for (j = 0; j < store->num_extra_frag; j++)
kfree_skb(store->extra_frag[j]);
kfree(store->extra_frag);
clear_bit(IEEE80211_LINK_STATE_PENDING, &local->state[i]);
clear_bit(i, local->queues_pending);
}
}
/*
* Transmit all pending packets. Called from tasklet, locks master device
* TX lock so that no new packets can come in.
*/
void ieee80211_tx_pending(unsigned long data)
{
struct ieee80211_local *local = (struct ieee80211_local *)data;
struct net_device *dev = local->mdev;
struct ieee80211_tx_stored_packet *store;
struct ieee80211_tx_data tx;
int i, ret, reschedule = 0;
int i, ret;
netif_tx_lock_bh(dev);
for (i = 0; i < local->hw.queues; i++) {
if (__ieee80211_queue_stopped(local, i))
for (i = 0; i < ieee80211_num_regular_queues(&local->hw); i++) {
/* Check that this queue is ok */
if (__netif_subqueue_stopped(local->mdev, i))
continue;
if (!__ieee80211_queue_pending(local, i)) {
reschedule = 1;
if (!test_bit(i, local->queues_pending)) {
ieee80211_wake_queue(&local->hw, i);
continue;
}
store = &local->pending_packet[i];
tx.extra_frag = store->extra_frag;
tx.num_extra_frag = store->num_extra_frag;
@ -1708,19 +1709,11 @@ void ieee80211_tx_pending(unsigned long data)
if (ret == IEEE80211_TX_FRAG_AGAIN)
store->skb = NULL;
} else {
clear_bit(IEEE80211_LINK_STATE_PENDING,
&local->state[i]);
reschedule = 1;
clear_bit(i, local->queues_pending);
ieee80211_wake_queue(&local->hw, i);
}
}
netif_tx_unlock_bh(dev);
if (reschedule) {
if (!ieee80211_qdisc_installed(dev)) {
if (!__ieee80211_queue_stopped(local, 0))
netif_wake_queue(dev);
} else
netif_schedule(dev);
}
}
/* functions for drivers to get certain frames */

29
net/mac80211/util.c
View File

@ -331,17 +331,15 @@ void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
{
struct ieee80211_local *local = hw_to_local(hw);
if (test_and_clear_bit(IEEE80211_LINK_STATE_XOFF,
&local->state[queue])) {
if (test_bit(IEEE80211_LINK_STATE_PENDING,
&local->state[queue]))
tasklet_schedule(&local->tx_pending_tasklet);
else
if (!ieee80211_qdisc_installed(local->mdev)) {
if (queue == 0)
netif_wake_queue(local->mdev);
} else
__netif_schedule(local->mdev);
if (test_bit(queue, local->queues_pending)) {
tasklet_schedule(&local->tx_pending_tasklet);
} else {
if (ieee80211_is_multiqueue(local)) {
netif_wake_subqueue(local->mdev, queue);
} else {
WARN_ON(queue != 0);
netif_wake_queue(local->mdev);
}
}
}
EXPORT_SYMBOL(ieee80211_wake_queue);
@ -350,9 +348,12 @@ void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
{
struct ieee80211_local *local = hw_to_local(hw);
if (!ieee80211_qdisc_installed(local->mdev) && queue == 0)
if (ieee80211_is_multiqueue(local)) {
netif_stop_subqueue(local->mdev, queue);
} else {
WARN_ON(queue != 0);
netif_stop_queue(local->mdev);
set_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
}
}
EXPORT_SYMBOL(ieee80211_stop_queue);
@ -360,7 +361,7 @@ void ieee80211_stop_queues(struct ieee80211_hw *hw)
{
int i;
for (i = 0; i < hw->queues + hw->ampdu_queues; i++)
for (i = 0; i < ieee80211_num_queues(hw); i++)
ieee80211_stop_queue(hw, i);
}
EXPORT_SYMBOL(ieee80211_stop_queues);

14
net/mac80211/wme.c
View File

@ -158,7 +158,7 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
u8 tid;
if (info->flags & IEEE80211_TX_CTL_REQUEUE) {
queue = info->queue;
queue = skb_get_queue_mapping(skb);
rcu_read_lock();
sta = sta_info_get(local, hdr->addr1);
tid = skb->priority & QOS_CONTROL_TAG1D_MASK;
@ -219,7 +219,7 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
err = NET_XMIT_DROP;
} else {
tid = skb->priority & QOS_CONTROL_TAG1D_MASK;
info->queue = (unsigned int) queue;
skb_set_queue_mapping(skb, queue);
qdisc = q->queues[queue];
err = qdisc->enqueue(skb, qdisc);
if (err == NET_XMIT_SUCCESS) {
@ -240,12 +240,11 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
static int wme_qdiscop_requeue(struct sk_buff *skb, struct Qdisc* qd)
{
struct ieee80211_sched_data *q = qdisc_priv(qd);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct Qdisc *qdisc;
int err;
/* we recorded which queue to use earlier! */
qdisc = q->queues[info->queue];
qdisc = q->queues[skb_get_queue_mapping(skb)];
if ((err = qdisc->ops->requeue(skb, qdisc)) == 0) {
qd->q.qlen++;
@ -269,11 +268,8 @@ static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd)
/* check all the h/w queues in numeric/priority order */
for (queue = 0; queue < QD_NUM(hw); queue++) {
/* see if there is room in this hardware queue */
if ((test_bit(IEEE80211_LINK_STATE_XOFF,
&local->state[queue])) ||
(test_bit(IEEE80211_LINK_STATE_PENDING,
&local->state[queue])) ||
(!test_bit(queue, q->qdisc_pool)))
if (__netif_subqueue_stopped(local->mdev, queue) ||
!test_bit(queue, q->qdisc_pool))
continue;
/* there is space - try and get a frame */

2
net/mac80211/wme.h
View File

@ -31,7 +31,7 @@ static inline int WLAN_FC_IS_QOS_DATA(u16 fc)
return (fc & 0x8C) == 0x88;
}
#ifdef CONFIG_NET_SCHED
#ifdef CONFIG_MAC80211_QOS
void ieee80211_install_qdisc(struct net_device *dev);
int ieee80211_qdisc_installed(struct net_device *dev);
int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,