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mac80211: move TX station pointer and restructure TX

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Remove the control.sta pointer from ieee80211_tx_info to free up
sufficient space in the TX skb control buffer for the upcoming
Transmit Power Control (TPC).
Instead, the pointer is now on the stack in a new control struct
that is passed as a function parameter to the drivers' tx method.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[reworded commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Thomas Huehn 2012-07-23 21:33:42 +02:00 • committed by Johannes Berg
commit 36323f817a
53 changed files with 232 additions and 132 deletions
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20
drivers/net/wireless/rt2x00/rt2x00queue.c
View file

@ -315,6 +315,7 @@ static void rt2x00queue_create_tx_descriptor_plcp(struct rt2x00_dev *rt2x00dev,
static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
struct sk_buff *skb,
struct txentry_desc *txdesc,
struct ieee80211_sta *sta,
const struct rt2x00_rate *hwrate)
{
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
@ -322,11 +323,11 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct rt2x00_sta *sta_priv = NULL;
if (tx_info->control.sta) {
if (sta) {
txdesc->u.ht.mpdu_density =
tx_info->control.sta->ht_cap.ampdu_density;
sta->ht_cap.ampdu_density;
sta_priv = sta_to_rt2x00_sta(tx_info->control.sta);
sta_priv = sta_to_rt2x00_sta(sta);
txdesc->u.ht.wcid = sta_priv->wcid;
}
@ -341,8 +342,8 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
* MIMO PS should be set to 1 for STA's using dynamic SM PS
* when using more then one tx stream (>MCS7).
*/
if (tx_info->control.sta && txdesc->u.ht.mcs > 7 &&
((tx_info->control.sta->ht_cap.cap &
if (sta && txdesc->u.ht.mcs > 7 &&
((sta->ht_cap.cap &
IEEE80211_HT_CAP_SM_PS) >>
IEEE80211_HT_CAP_SM_PS_SHIFT) ==
WLAN_HT_CAP_SM_PS_DYNAMIC)
@ -409,7 +410,8 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
static void rt2x00queue_create_tx_descriptor(struct rt2x00_dev *rt2x00dev,
struct sk_buff *skb,
struct txentry_desc *txdesc)
struct txentry_desc *txdesc,
struct ieee80211_sta *sta)
{
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
@ -503,7 +505,7 @@ static void rt2x00queue_create_tx_descriptor(struct rt2x00_dev *rt2x00dev,
if (test_bit(REQUIRE_HT_TX_DESC, &rt2x00dev->cap_flags))
rt2x00queue_create_tx_descriptor_ht(rt2x00dev, skb, txdesc,
hwrate);
sta, hwrate);
else
rt2x00queue_create_tx_descriptor_plcp(rt2x00dev, skb, txdesc,
hwrate);
@ -595,7 +597,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb,
* after that we are free to use the skb->cb array
* for our information.
*/
rt2x00queue_create_tx_descriptor(queue->rt2x00dev, skb, &txdesc);
rt2x00queue_create_tx_descriptor(queue->rt2x00dev, skb, &txdesc, NULL);
/*
* All information is retrieved from the skb->cb array,
@ -740,7 +742,7 @@ int rt2x00queue_update_beacon_locked(struct rt2x00_dev *rt2x00dev,
* after that we are free to use the skb->cb array
* for our information.
*/
rt2x00queue_create_tx_descriptor(rt2x00dev, intf->beacon->skb, &txdesc);
rt2x00queue_create_tx_descriptor(rt2x00dev, intf->beacon->skb, &txdesc, NULL);
/*
* Fill in skb descriptor