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mac80211: move TX info into skb->cb

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This patch converts mac80211 and all drivers to have transmit
information and status in skb->cb rather than allocating extra
memory for it and copying all the data around. To make it fit,
a union is used where only data that is necessary for all steps
is kept outside of the union.

A number of fixes were done by Ivo, as well as the rt2x00 part
of this patch.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2008-05-15 12:55:29 +02:00
committed by John W. Linville
parent e24549485f
commit e039fa4a41
67 changed files with 976 additions and 1270 deletions
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22
net/mac80211/wme.c
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@ -149,8 +149,7 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
struct ieee80211_local *local = wdev_priv(qd->dev->ieee80211_ptr);
struct ieee80211_hw *hw = &local->hw;
struct ieee80211_sched_data *q = qdisc_priv(qd);
struct ieee80211_tx_packet_data *pkt_data =
(struct ieee80211_tx_packet_data *) skb->cb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
unsigned short fc = le16_to_cpu(hdr->frame_control);
struct Qdisc *qdisc;
@ -158,8 +157,8 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
int err, queue;
u8 tid;
if (pkt_data->flags & IEEE80211_TXPD_REQUEUE) {
queue = pkt_data->queue;
if (info->flags & IEEE80211_TX_CTL_REQUEUE) {
queue = info->queue;
rcu_read_lock();
sta = sta_info_get(local, hdr->addr1);
tid = skb->priority & QOS_CONTROL_TAG1D_MASK;
@ -168,9 +167,9 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
if ((ampdu_queue < QD_NUM(hw)) &&
test_bit(ampdu_queue, q->qdisc_pool)) {
queue = ampdu_queue;
pkt_data->flags |= IEEE80211_TXPD_AMPDU;
info->flags |= IEEE80211_TX_CTL_AMPDU;
} else {
pkt_data->flags &= ~IEEE80211_TXPD_AMPDU;
info->flags &= ~IEEE80211_TX_CTL_AMPDU;
}
}
rcu_read_unlock();
@ -206,9 +205,9 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
if ((ampdu_queue < QD_NUM(hw)) &&
test_bit(ampdu_queue, q->qdisc_pool)) {
queue = ampdu_queue;
pkt_data->flags |= IEEE80211_TXPD_AMPDU;
info->flags |= IEEE80211_TX_CTL_AMPDU;
} else {
pkt_data->flags &= ~IEEE80211_TXPD_AMPDU;
info->flags &= ~IEEE80211_TX_CTL_AMPDU;
}
}
@ -220,7 +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;
pkt_data->queue = (unsigned int) queue;
info->queue = (unsigned int) queue;
qdisc = q->queues[queue];
err = qdisc->enqueue(skb, qdisc);
if (err == NET_XMIT_SUCCESS) {
@ -241,13 +240,12 @@ 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_packet_data *pkt_data =
(struct ieee80211_tx_packet_data *) skb->cb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct Qdisc *qdisc;
int err;
/* we recorded which queue to use earlier! */
qdisc = q->queues[pkt_data->queue];
qdisc = q->queues[info->queue];
if ((err = qdisc->ops->requeue(skb, qdisc)) == 0) {
qd->q.qlen++;