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mac80211: use rate index in TX control

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This patch modifies struct ieee80211_tx_control to give band
info and the rate index (instead of rate pointers) to drivers.
This mostly serves to reduce the TX control structure size to
make it fit into skb->cb so that the fragmentation code can
put it there and we can think about passing it to drivers that
way in the future.

The rt2x00 driver update was done by Ivo, thanks.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2008-05-15 12:55:27 +02:00
committed by John W. Linville
parent 36d6825b91
commit 2e92e6f2c5
25 changed files with 206 additions and 152 deletions
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12
net/mac80211/rate.c
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@@ -176,20 +176,24 @@ void rate_control_get_rate(struct net_device *dev,
rcu_read_lock();
sta = sta_info_get(local, hdr->addr1);
memset(sel, 0, sizeof(struct rate_selection));
sel->rate_idx = -1;
sel->nonerp_idx = -1;
sel->probe_idx = -1;
ref->ops->get_rate(ref->priv, dev, sband, skb, sel);
BUG_ON(sel->rate_idx < 0);
/* Select a non-ERP backup rate. */
if (!sel->nonerp) {
if (sel->nonerp_idx < 0) {
for (i = 0; i < sband->n_bitrates; i++) {
struct ieee80211_rate *rate = &sband->bitrates[i];
if (sel->rate->bitrate < rate->bitrate)
if (sband->bitrates[sel->rate_idx].bitrate < rate->bitrate)
break;
if (rate_supported(sta, sband->band, i) &&
!(rate->flags & IEEE80211_RATE_ERP_G))
sel->nonerp = rate;
sel->nonerp_idx = i;
}
}