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Commit 0973dd45 authored by Johannes Berg's avatar Johannes Berg
Browse files

Revert "mac80211: Add airtime account and scheduling to TXQs" 



This reverts commit b0d52ad8.

We need to revert the TXQ scheduling API due to conflicts
with a new driver, and this depends on that API.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent b0d52ad8

include/net/mac80211.h

+0 −24
Original line number Diff line number Diff line
@@ -1188,8 +1188,6 @@ enum mac80211_rx_encoding { 
 *	HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT)

 * @nss: number of streams (VHT and HE only)

 * @flag: %RX_FLAG_\*

 * @airtime: Duration of frame in usec. See @IEEE80211_HW_AIRTIME_ACCOUNTING for

 *       how to use this.

 * @encoding: &enum mac80211_rx_encoding

 * @bw: &enum rate_info_bw

 * @enc_flags: uses bits from &enum mac80211_rx_encoding_flags
@@ -1204,7 +1202,6 @@ struct ieee80211_rx_status { 
	u32 device_timestamp;

	u32 ampdu_reference;

	u32 flag;

	u16 airtime;

	u16 freq;

	u8 enc_flags;

	u8 encoding:2, bw:3;
@@ -2069,26 +2066,6 @@ struct ieee80211_txq { 
 * @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on

 *	TDLS links.

 *

 * @IEEE80211_HW_AIRTIME_ACCOUNTING: Hardware supports accounting the airtime

 *      usage of other stations and reports it in the @tx_time and/or @airtime

 *      fields of the TX/RX status structs.

 *      When setting this flag, the driver should ensure that the respective

 *      fields in the TX and RX status structs are always either zero or

 *      contains a valid duration for the frame in usec. The driver can choose

 *      to report either or both of TX and RX airtime, but it is recommended to

 *      report both.

 *      The reported airtime should as a minimum include all time that is spent

 *      transmitting to the remote station, including overhead and padding, but

 *      not including time spent waiting for a TXOP. If the time is not reported

 *      by the hardware it can in some cases be calculated from the rate and

 *      known frame composition. When possible, the time should include any

 *      failed transmission attempts.

 *      For aggregated frames, there are two possible strategies to report the

 *      airtime: Either include the airtime of the entire aggregate in the first

 *      (or last) frame and leave the others at zero. Alternatively, include the

 *      overhead of the full aggregate in the first or last frame and report the

 *      time of each frame + padding not including the full aggregate overhead.

 *

 * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays

 */

enum ieee80211_hw_flags {
@@ -2132,7 +2109,6 @@ enum ieee80211_hw_flags { 
	IEEE80211_HW_REPORTS_LOW_ACK,

	IEEE80211_HW_SUPPORTS_TX_FRAG,

	IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA,

	IEEE80211_HW_AIRTIME_ACCOUNTING,



	/* keep last, obviously */

	NUM_IEEE80211_HW_FLAGS

net/mac80211/debugfs.c

+0 −1
Original line number Diff line number Diff line
@@ -212,7 +212,6 @@ static const char *hw_flag_names[] = { 
	FLAG(REPORTS_LOW_ACK),

	FLAG(SUPPORTS_TX_FRAG),

	FLAG(SUPPORTS_TDLS_BUFFER_STA),

	FLAG(AIRTIME_ACCOUNTING),

#undef FLAG

};

net/mac80211/debugfs_sta.c

+0 −29
Original line number Diff line number Diff line
@@ -188,32 +188,6 @@ static ssize_t sta_aqm_read(struct file *file, char __user *userbuf, 
}

STA_OPS(aqm);



static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,

				size_t count, loff_t *ppos)

{

	struct sta_info *sta = file->private_data;

	size_t bufsz = 200;

	char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;

	ssize_t rv;



	if (!buf)

		return -ENOMEM;



	spin_lock_bh(&sta->lock);



	p += scnprintf(p, bufsz + buf - p,

		"RX: %llu us\nTX: %llu us\nDeficit: %lld us\n",

		sta->airtime_stats.rx_airtime,

		sta->airtime_stats.tx_airtime,

		sta->airtime_deficit);



	spin_unlock_bh(&sta->lock);

	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);

	kfree(buf);

	return rv;

}

STA_OPS(airtime);



static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,

					size_t count, loff_t *ppos)

{
@@ -568,9 +542,6 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta) 
	if (local->ops->wake_tx_queue)

		DEBUGFS_ADD(aqm);



	if (ieee80211_hw_check(&local->hw, AIRTIME_ACCOUNTING))

		DEBUGFS_ADD(airtime);



	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))

		debugfs_create_x32("driver_buffered_tids", 0400,

				   sta->debugfs_dir,

net/mac80211/ieee80211_i.h

+2 −6
Original line number Diff line number Diff line
@@ -90,9 +90,6 @@ extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 


#define IEEE80211_MAX_NAN_INSTANCE_ID 255



/* How much to increase airtime deficit on each scheduling round */

#define IEEE80211_AIRTIME_QUANTUM        1000 /* usec */



struct ieee80211_fragment_entry {

	struct sk_buff_head skb_list;

	unsigned long first_frag_time;
@@ -1126,10 +1123,9 @@ struct ieee80211_local { 
	struct codel_vars *cvars;

	struct codel_params cparams;



	/* protects active_txqs_{new,old} and txqi->schedule_order */

	/* protects active_txqs and txqi->schedule_order */

	spinlock_t active_txq_lock;

	struct list_head active_txqs_new;

	struct list_head active_txqs_old;

	struct list_head active_txqs;



	const struct ieee80211_ops *ops;

net/mac80211/main.c

+1 −2
Original line number Diff line number Diff line
@@ -619,8 +619,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, 
	spin_lock_init(&local->rx_path_lock);

	spin_lock_init(&local->queue_stop_reason_lock);



	INIT_LIST_HEAD(&local->active_txqs_new);

	INIT_LIST_HEAD(&local->active_txqs_old);

	INIT_LIST_HEAD(&local->active_txqs);

	spin_lock_init(&local->active_txq_lock);



	INIT_LIST_HEAD(&local->chanctx_list);