Average ack rssi will be given to userspace via NL80211 interface
if firmware is capable. Userspace tool ‘iw’ can process this
information and give the output as one of the fields in
‘iw dev wlanX station dump’.
Example output :
localhost ~ #iw dev wlan-5000mhz station dump Station
34:f3:9a:aa:3b:29 (on wlan-5000mhz)
inactive time: 5370 ms
rx bytes: 85321
rx packets: 576
tx bytes: 14225
tx packets: 71
tx retries: 0
tx failed: 2
beacon loss: 0
rx drop misc: 0
signal: -54 dBm
signal avg: -53 dBm
tx bitrate: 866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
rx bitrate: 866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
avg ack signal: -56 dBm
authorized: yes
authenticated: yes
associated: yes
preamble: short
WMM/WME: yes
MFP: no
TDLS peer: no
DTIM period: 2
beacon interval:100
short preamble: yes
short slot time:yes
connected time: 203 seconds
Main use case is to measure the signal strength of a connected station
to AP. Data packet transmit rates and bandwidth used by station can vary
a lot even if the station is at fixed location, especially if the rates
used are multi stream(2stream, 3stream) rates with different bandwidth(20/40/80 Mhz).
These multi stream rates are sensitive and station can use different transmit power
for each of the rate and bandwidth combinations. RSSI measured from these RX packets
on AP will be not stable and can vary a lot with in a short time.
Whereas 802.11 ack frames from station are sent relatively at a constant
rate (6/12/24 Mbps) with constant bandwidth(20 Mhz).
So average rssi of the ack packets is good and more accurate."
Signed-off-by: Balaji Pothunoori <[email protected]>
---
include/net/cfg80211.h | 3 +++
include/uapi/linux/nl80211.h | 7 +++++++
net/wireless/nl80211.c | 3 +++
3 files changed, 13 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 250dac3..5e888ec 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1152,6 +1152,8 @@ struct cfg80211_tid_stats {
* @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last
* (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs.
* @ack_signal: signal strength (in dBm) of the last ACK frame.
+ * @avg_ack_signal: average rssi value of ack packet for the no of msdu's has
+ * been sent.
*/
struct station_info {
u64 filled;
@@ -1197,6 +1199,7 @@ struct station_info {
u8 rx_beacon_signal_avg;
struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1];
s8 ack_signal;
+ s8 avg_ack_signal;
};
#if IS_ENABLED(CONFIG_CFG80211)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 15daf5e..a41a77b 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2980,6 +2980,8 @@ enum nl80211_sta_bss_param {
* received from the station (u64, usec)
* @NL80211_STA_INFO_PAD: attribute used for padding for 64-bit alignment
* @NL80211_STA_INFO_ACK_SIGNAL: signal strength of the last ACK frame(u8, dBm)
+ * @NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG: avg signal strength of data ACK
+ * frame(s8, dBm)
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -3019,6 +3021,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_RX_DURATION,
NL80211_STA_INFO_PAD,
NL80211_STA_INFO_ACK_SIGNAL,
+ NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
@@ -5038,6 +5041,9 @@ enum nl80211_feature_flags {
* "radar detected" event.
* @NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211: Driver supports sending and
* receiving control port frames over nl80211 instead of the netdevice.
+ * @NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT: This Driver support data ack
+ * rssi if firmware support, this flag is to intimate about ack rssi
+ * support to nl80211.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
@@ -5070,6 +5076,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN,
NL80211_EXT_FEATURE_DFS_OFFLOAD,
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211,
+ NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ff28f8f..5415e7c 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4494,6 +4494,9 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
PUT_SINFO_U64(BEACON_RX, rx_beacon);
PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
+ if (wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
+ PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
#undef PUT_SINFO
#undef PUT_SINFO_U64
--
2.7.4
Hi Balaji,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on next-20180411]
[cannot apply to ath6kl/ath-next v4.16 v4.16-rc7 v4.16-rc6 v4.16]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Balaji-Pothunoori/cfg80211-average-ack-rssi-support-for-data-frames/20180414-115825
reproduce: make htmldocs
All warnings (new ones prefixed by >>):
include/net/mac80211.h:955: warning: Function parameter or member 'control.flags' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'control.enqueue_time' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'ack' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'ack.cookie' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.rates' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.ack_signal' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.ampdu_ack_len' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.ampdu_len' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.antenna' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.tx_time' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.is_valid_ack_signal' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'status.status_driver_data' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'driver_rates' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'pad' not described in 'ieee80211_tx_info'
include/net/mac80211.h:955: warning: Function parameter or member 'rate_driver_data' not described in 'ieee80211_tx_info'
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
include/net/mac80211.h:2083: warning: bad line: >
net/mac80211/sta_info.h:588: warning: Function parameter or member 'rx_stats_avg' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'rx_stats_avg.signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'rx_stats_avg.chain_signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.filtered' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.retry_failed' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.retry_count' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.lost_packets' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.last_tdls_pkt_time' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.msdu_retries' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.msdu_failed' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.last_ack' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.last_ack_signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'status_stats.ack_signal_filled' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'tx_stats.packets' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'tx_stats.bytes' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'tx_stats.last_rate' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member 'tx_stats.msdu' not described in 'sta_info'
>> net/mac80211/sta_info.h:588: warning: Function parameter or member 'avg_ack_signal' not described in 'sta_info'
kernel/sched/fair.c:3731: warning: Function parameter or member 'flags' not described in 'attach_entity_load_avg'
include/linux/dma-buf.h:307: warning: Function parameter or member 'cb_excl.cb' not described in 'dma_buf'
include/linux/dma-buf.h:307: warning: Function parameter or member 'cb_excl.poll' not described in 'dma_buf'
include/linux/dma-buf.h:307: warning: Function parameter or member 'cb_excl.active' not described in 'dma_buf'
include/linux/dma-buf.h:307: warning: Function parameter or member 'cb_shared.cb' not described in 'dma_buf'
include/linux/dma-buf.h:307: warning: Function parameter or member 'cb_shared.poll' not described in 'dma_buf'
include/linux/dma-buf.h:307: warning: Function parameter or member 'cb_shared.active' not described in 'dma_buf'
include/linux/dma-fence-array.h:54: warning: Function parameter or member 'work' not described in 'dma_fence_array'
Error: Cannot open file drivers/base/firmware_class.c
WARNING: kernel-doc 'scripts/kernel-doc -rst -enable-lineno -function request_firmware drivers/base/firmware_class.c' failed with return code 1
Error: Cannot open file drivers/base/firmware_class.c
WARNING: kernel-doc 'scripts/kernel-doc -rst -enable-lineno -function request_firmware_direct drivers/base/firmware_class.c' failed with return code 1
Error: Cannot open file drivers/base/firmware_class.c
WARNING: kernel-doc 'scripts/kernel-doc -rst -enable-lineno -function request_firmware_into_buf drivers/base/firmware_class.c' failed with return code 1
Error: Cannot open file drivers/base/firmware_class.c
WARNING: kernel-doc 'scripts/kernel-doc -rst -enable-lineno -function request_firmware_nowait drivers/base/firmware_class.c' failed with return code 1
Error: Cannot open file drivers/base/firmware_class.c
WARNING: kernel-doc 'scripts/kernel-doc -rst -enable-lineno -function firmware_request_cache drivers/base/firmware_class.c' failed with return code 1
include/linux/gpio/driver.h:142: warning: Function parameter or member 'request_key' not described in 'gpio_irq_chip'
include/linux/iio/iio.h:270: warning: Function parameter or member 'scan_type.sign' not described in 'iio_chan_spec'
include/linux/iio/iio.h:270: warning: Function parameter or member 'scan_type.realbits' not described in 'iio_chan_spec'
include/linux/iio/iio.h:270: warning: Function parameter or member 'scan_type.storagebits' not described in 'iio_chan_spec'
include/linux/iio/iio.h:270: warning: Function parameter or member 'scan_type.shift' not described in 'iio_chan_spec'
include/linux/iio/iio.h:270: warning: Function parameter or member 'scan_type.repeat' not described in 'iio_chan_spec'
include/linux/iio/iio.h:270: warning: Function parameter or member 'scan_type.endianness' not described in 'iio_chan_spec'
include/linux/iio/hw-consumer.h:1: warning: no structured comments found
Error: Cannot open file drivers/base/firmware_class.c
Error: Cannot open file drivers/base/firmware_class.c
WARNING: kernel-doc 'scripts/kernel-doc -rst -enable-lineno -export drivers/base/firmware_class.c' failed with return code 2
include/linux/input/sparse-keymap.h:46: warning: Function parameter or member 'sw' not described in 'key_entry'
include/linux/mtd/rawnand.h:752: warning: Function parameter or member 'timings.sdr' not described in 'nand_data_interface'
include/linux/mtd/rawnand.h:817: warning: Function parameter or member 'buf' not described in 'nand_op_data_instr'
include/linux/mtd/rawnand.h:817: warning: Function parameter or member 'buf.in' not described in 'nand_op_data_instr'
include/linux/mtd/rawnand.h:817: warning: Function parameter or member 'buf.out' not described in 'nand_op_data_instr'
include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx' not described in 'nand_op_instr'
include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.cmd' not described in 'nand_op_instr'
include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.addr' not described in 'nand_op_instr'
include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.data' not described in 'nand_op_instr'
include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.waitrdy' not described in 'nand_op_instr'
include/linux/mtd/rawnand.h:1010: warning: Function parameter or member 'ctx' not described in 'nand_op_parser_pattern_elem'
include/linux/mtd/rawnand.h:1010: warning: Function parameter or member 'ctx.addr' not described in 'nand_op_parser_pattern_elem'
include/linux/mtd/rawnand.h:1010: warning: Function parameter or member 'ctx.data' not described in 'nand_op_parser_pattern_elem'
include/linux/mtd/rawnand.h:1313: warning: Function parameter or member 'manufacturer.desc' not described in 'nand_chip'
include/linux/mtd/rawnand.h:1313: warning: Function parameter or member 'manufacturer.priv' not described in 'nand_chip'
include/linux/regulator/driver.h:222: warning: Function parameter or member 'resume_early' not described in 'regulator_ops'
drivers/regulator/core.c:4306: warning: Excess function parameter 'state' description in 'regulator_suspend_late'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member 'esw.esw0' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member 'esw.esw1' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member 'esw.esw2' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member 'esw.esw3' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member 'esw.eadm' not described in 'irb'
drivers/usb/typec/mux.c:186: warning: Function parameter or member 'mux' not described in 'typec_mux_unregister'
drivers/usb/typec/mux.c:186: warning: Excess function parameter 'sw' description in 'typec_mux_unregister'
vim +588 net/mac80211/sta_info.h
17741cdc2 Johannes Berg 2008-09-11 573
0af83d3df Johannes Berg 2012-12-27 574 enum ieee80211_sta_rx_bandwidth cur_max_bandwidth;
0af83d3df Johannes Berg 2012-12-27 575
687da1322 Emmanuel Grumbach 2013-10-01 576 enum ieee80211_smps_mode known_smps_mode;
2475b1cc0 Max Stepanov 2013-03-24 577 const struct ieee80211_cipher_scheme *cipher_scheme;
687da1322 Emmanuel Grumbach 2013-10-01 578
484a54c2e Toke H?iland-J?rgensen 2017-04-06 579 struct codel_params cparams;
484a54c2e Toke H?iland-J?rgensen 2017-04-06 580
b6da911b3 Liad Kaufman 2014-11-19 581 u8 reserved_tid;
b6da911b3 Liad Kaufman 2014-11-19 582
0fabfaafe Arik Nemtsov 2015-06-10 583 struct cfg80211_chan_def tdls_chandef;
0fabfaafe Arik Nemtsov 2015-06-10 584
2d05de97a Balaji Pothunoori 2018-04-13 585 struct ewma_avg_signal avg_ack_signal;
17741cdc2 Johannes Berg 2008-09-11 586 /* keep last! */
17741cdc2 Johannes Berg 2008-09-11 587 struct ieee80211_sta sta;
f0706e828 Jiri Benc 2007-05-05 @588 };
f0706e828 Jiri Benc 2007-05-05 589
:::::: The code at line 588 was first introduced by commit
:::::: f0706e828e96d0fa4e80c0d25aa98523f6d589a0 [MAC80211]: Add mac80211 wireless stack.
:::::: TO: Jiri Benc <[email protected]>
:::::: CC: David S. Miller <[email protected]>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
The driver will process the RSSI if available and send it to mac80211.
mac80211 will compute the weighted average of ack RSSI for stations.
Signed-off-by: Balaji Pothunoori <[email protected]>
---
net/mac80211/sta_info.c | 10 ++++++++++
net/mac80211/sta_info.h | 2 ++
net/mac80211/status.c | 2 ++
3 files changed, 14 insertions(+)
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 655c3d8..fad6a84 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -357,6 +357,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->last_connected = ktime_get_seconds();
ewma_signal_init(&sta->rx_stats_avg.signal);
+ ewma_avg_signal_init(&sta->avg_ack_signal);
for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++)
ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]);
@@ -2294,6 +2295,15 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->ack_signal = sta->status_stats.last_ack_signal;
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL);
}
+ if (ieee80211_hw_check(&sta->local->hw, REPORTS_TX_ACK_STATUS)) {
+ if (!(sinfo->filled &
+ BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG))) {
+ sinfo->avg_ack_signal =
+ -(s8)ewma_avg_signal_read(&sta->avg_ack_signal);
+ sinfo->filled |=
+ BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG);
+ }
+ }
}
u32 sta_get_expected_throughput(struct sta_info *sta)
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index f64eb86..1028924 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -119,6 +119,7 @@ enum ieee80211_sta_info_flags {
#define HT_AGG_STATE_START_CB 6
#define HT_AGG_STATE_STOP_CB 7
+DECLARE_EWMA(avg_signal, 10, 8)
enum ieee80211_agg_stop_reason {
AGG_STOP_DECLINED,
AGG_STOP_LOCAL_REQUEST,
@@ -581,6 +582,7 @@ struct sta_info {
struct cfg80211_chan_def tdls_chandef;
+ struct ewma_avg_signal avg_ack_signal;
/* keep last! */
struct ieee80211_sta sta;
};
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 743e89c..93dc971 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -195,6 +195,8 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
sta->status_stats.last_ack_signal =
(s8)txinfo->status.ack_signal;
sta->status_stats.ack_signal_filled = true;
+ ewma_avg_signal_add(&sta->avg_ack_signal,
+ -(txinfo->status.ack_signal));
}
}
--
2.7.4