mac80211: use rate index in TX control

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>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index 0c736735e21..99c508c09e5 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -523,14 +523,17 @@ static int fill_ctrlset(struct zd_mac *mac,
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
         unsigned int frag_len = skb->len + FCS_LEN;
         unsigned int packet_length;
+        struct ieee80211_rate *txrate;
         struct zd_ctrlset *cs = (struct zd_ctrlset *)
                 skb_push(skb, sizeof(struct zd_ctrlset));
 
         ZD_ASSERT(frag_len <= 0xffff);
 
-        cs->modulation = control->tx_rate->hw_value;
+        txrate = ieee80211_get_tx_rate(mac->hw, control);
+
+        cs->modulation = txrate->hw_value;
         if (control->flags & IEEE80211_TXCTL_SHORT_PREAMBLE)
-                cs->modulation = control->tx_rate->hw_value_short;
+                cs->modulation = txrate->hw_value_short;
 
         cs->tx_length = cpu_to_le16(frag_len);