diff options
author | Thomas Huehn <thomas@net.t-labs.tu-berlin.de> | 2012-07-02 17:46:16 (GMT) |
---|---|---|
committer | Johannes Berg <johannes.berg@intel.com> | 2012-07-03 11:48:37 (GMT) |
commit | e3e1a0bcb3f192fe2f95f86a74bd4e7967341e74 (patch) | |
tree | ed07b2c0a4bd814263bc1b85183ed0d1040ba274 | |
parent | cb831b537d50d21f6afb5dffbde4cf6523627461 (diff) | |
download | linux-fsl-qoriq-e3e1a0bcb3f192fe2f95f86a74bd4e7967341e74.tar.xz |
mac80211: reduce IEEE80211_TX_MAX_RATES
IEEE80211_TX_MAX_RATES can be reduced from 5 to 4 as there
is no current hardware supporting a rate chain with 5 multi
rate stages (mrr), so 4 mrr stages are sufficient.
The memory that is freed within the ieee80211_tx_info struct
will be used in the upcoming Transmission Power Control (TPC)
implementation.
Suggested-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
[reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-rw-r--r-- | drivers/net/wireless/ath/carl9170/tx.c | 6 | ||||
-rw-r--r-- | drivers/net/wireless/p54/txrx.c | 6 | ||||
-rw-r--r-- | include/net/mac80211.h | 8 | ||||
-rw-r--r-- | net/mac80211/tx.c | 3 |
4 files changed, 11 insertions, 12 deletions
diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c index aed3051..ede0b57 100644 --- a/drivers/net/wireless/ath/carl9170/tx.c +++ b/drivers/net/wireless/ath/carl9170/tx.c @@ -277,11 +277,11 @@ static void carl9170_tx_release(struct kref *ref) return; BUILD_BUG_ON( - offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); + offsetof(struct ieee80211_tx_info, status.ack_signal) != 20); - memset(&txinfo->status.ampdu_ack_len, 0, + memset(&txinfo->status.ack_signal, 0, sizeof(struct ieee80211_tx_info) - - offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); + offsetof(struct ieee80211_tx_info, status.ack_signal)); if (atomic_read(&ar->tx_total_queued)) ar->tx_schedule = true; diff --git a/drivers/net/wireless/p54/txrx.c b/drivers/net/wireless/p54/txrx.c index 82a1cac..f38786e 100644 --- a/drivers/net/wireless/p54/txrx.c +++ b/drivers/net/wireless/p54/txrx.c @@ -422,11 +422,11 @@ static void p54_rx_frame_sent(struct p54_common *priv, struct sk_buff *skb) * Clear manually, ieee80211_tx_info_clear_status would * clear the counts too and we need them. */ - memset(&info->status.ampdu_ack_len, 0, + memset(&info->status.ack_signal, 0, sizeof(struct ieee80211_tx_info) - - offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); + offsetof(struct ieee80211_tx_info, status.ack_signal)); BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, - status.ampdu_ack_len) != 23); + status.ack_signal) != 20); if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN)) pad = entry_data->align[0]; diff --git a/include/net/mac80211.h b/include/net/mac80211.h index dc2a97a..3f1b58c 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -475,7 +475,7 @@ enum mac80211_rate_control_flags { #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 /* maximum number of rate stages */ -#define IEEE80211_TX_MAX_RATES 5 +#define IEEE80211_TX_MAX_RATES 4 /** * struct ieee80211_tx_rate - rate selection/status @@ -563,11 +563,11 @@ struct ieee80211_tx_info { } control; struct { struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; - u8 ampdu_ack_len; int ack_signal; + u8 ampdu_ack_len; u8 ampdu_len; u8 antenna; - /* 14 bytes free */ + /* 21 bytes free */ } status; struct { struct ieee80211_tx_rate driver_rates[ @@ -634,7 +634,7 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) info->status.rates[i].count = 0; BUILD_BUG_ON( - offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); + offsetof(struct ieee80211_tx_info, status.ack_signal) != 20); memset(&info->status.ampdu_ack_len, 0, sizeof(struct ieee80211_tx_info) - offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 364a1e7..c9d2175 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -959,8 +959,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx) info->control.rates[1].idx = -1; info->control.rates[2].idx = -1; info->control.rates[3].idx = -1; - info->control.rates[4].idx = -1; - BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 5); + BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 4); info->flags &= ~IEEE80211_TX_CTL_RATE_CTRL_PROBE; } else { hdr->frame_control &= ~morefrags; |