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, 3 insertions, 7 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index f848a5b0f622..fb670b5cfebb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -373,14 +373,10 @@ void iwl4965_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
                 control->flags |= IEEE80211_TXCTL_DUP_DATA;
         if (rate_n_flags & RATE_MCS_SGI_MSK)
                 control->flags |= IEEE80211_TXCTL_SHORT_GI;
-        /* since iwl4965_hwrate_to_plcp_idx is band indifferent, we always use
-         * IEEE80211_BAND_2GHZ band as it contains all the rates */
         rate_index = iwl4965_hwrate_to_plcp_idx(rate_n_flags);
-        if (rate_index == -1)
-                control->tx_rate = NULL;
-        else
-                control->tx_rate =
-                        &priv->bands[IEEE80211_BAND_2GHZ].bitrates[rate_index];
+        if (control->band == IEEE80211_BAND_5GHZ)
+                rate_index -= IWL_FIRST_OFDM_RATE;
+        control->tx_rate_idx = rate_index;
 }
 
 int iwl4965_hw_rxq_stop(struct iwl_priv *priv)