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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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19
drivers/net/wireless/b43legacy/pio.c
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@@ -196,7 +196,7 @@ static int pio_tx_write_fragment(struct b43legacy_pioqueue *queue,
B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags != 0);
err = b43legacy_generate_txhdr(queue->dev,
txhdr, skb->data, skb->len,
&packet->txstat.control,
IEEE80211_SKB_CB(skb),
generate_cookie(queue, packet));
if (err)
return err;
@@ -463,8 +463,7 @@ err_destroy0:
}
int b43legacy_pio_tx(struct b43legacy_wldev *dev,
struct sk_buff *skb,
struct ieee80211_tx_control *ctl)
struct sk_buff *skb)
{
struct b43legacy_pioqueue *queue = dev->pio.queue1;
struct b43legacy_pio_txpacket *packet;
@@ -476,9 +475,6 @@ int b43legacy_pio_tx(struct b43legacy_wldev *dev,
list);
packet->skb = skb;
memset(&packet->txstat, 0, sizeof(packet->txstat));
memcpy(&packet->txstat.control, ctl, sizeof(*ctl));
list_move_tail(&packet->list, &queue->txqueue);
queue->nr_txfree--;
queue->nr_tx_packets++;
@@ -494,6 +490,7 @@ void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
{
struct b43legacy_pioqueue *queue;
struct b43legacy_pio_txpacket *packet;
struct ieee80211_tx_info *info;
queue = parse_cookie(dev, status->cookie, &packet);
B43legacy_WARN_ON(!queue);
@@ -505,11 +502,13 @@ void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
queue->tx_devq_used -= (packet->skb->len +
sizeof(struct b43legacy_txhdr_fw3));
info = IEEE80211_SKB_CB(packet->skb);
memset(&info->status, 0, sizeof(info->status));
if (status->acked)
packet->txstat.flags |= IEEE80211_TX_STATUS_ACK;
packet->txstat.retry_count = status->frame_count - 1;
ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb,
&(packet->txstat));
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.retry_count = status->frame_count - 1;
ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb);
packet->skb = NULL;
free_txpacket(packet, 1);