linux_dsm_epyc7002/net/wireless
Balaji Pothunoori 81d5439da8 cfg80211: average ack rssi support for data frames
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 <bpothuno@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-07 21:37:20 +02:00
..
certs cfg80211: ship certificates as hex files 2017-12-19 09:28:01 +01:00
.gitignore cfg80211: implement regdb signature checking 2017-10-11 14:24:24 +02:00
ap.c nl80211: Add SOCKET_OWNER support to START_AP 2018-03-29 10:47:28 +02:00
chan.c cfg80211: enable use of non-cleared DFS channels for DFS offload 2018-03-29 10:21:35 +02:00
core.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
core.h nl80211: Add SOCKET_OWNER support to JOIN_MESH 2018-03-29 10:38:24 +02:00
debugfs.c cfg80211 debugfs: Cleanup some checkpatch issues 2017-02-08 09:15:59 +01:00
debugfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ethtool.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ibss.c nl80211: Add SOCKET_OWNER support to JOIN_IBSS 2018-03-29 10:36:22 +02:00
Kconfig cfg80211: add missing dependency to CFG80211 suboptions 2018-02-27 10:54:12 +01:00
lib80211_crypt_ccmp.c lib80211: ratelimit key index mismatch 2015-12-04 14:43:32 +01:00
lib80211_crypt_tkip.c wireless: fix bogus maybe-uninitialized warning 2016-11-17 08:46:38 +02:00
lib80211_crypt_wep.c lib80211: Use skcipher and ahash 2016-01-27 20:36:03 +08:00
lib80211.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
Makefile cfg80211: ship certificates as hex files 2017-12-19 09:28:01 +01:00
mesh.c nl80211: Add SOCKET_OWNER support to JOIN_MESH 2018-03-29 10:38:24 +02:00
mlme.c cfg80211: fix CAC_STARTED event handling 2018-03-29 10:21:16 +02:00
nl80211.c cfg80211: average ack rssi support for data frames 2018-05-07 21:37:20 +02:00
nl80211.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ocb.c cfg80211: ocb: Fix null pointer deref if join_ocb is unimplemented 2015-12-04 14:43:32 +01:00
of.c cfg80211: support ieee80211-freq-limit DT property 2017-01-06 14:01:13 +01:00
radiotap.c cfg80211: add radiotap VHT info to rtap_namespace_sizes 2016-02-24 09:04:41 +01:00
rdev-ops.h nl80211: Implement TX of control port frames 2018-03-29 13:44:19 +02:00
reg.c cfg80211: Call reg_notifier for self managed hints conditionally 2018-05-07 20:57:41 +02:00
reg.h cfg80211: implement regdb signature checking 2017-10-11 14:24:24 +02:00
scan.c cfg80211: Scan results to also report the per chain signal strength 2017-12-19 10:37:31 +01:00
sme.c cfg80211: Support all iftypes in autodisconnect_wk 2018-03-29 10:22:19 +02:00
sysfs.c cfg80211: check rdev resume callback only for registered wiphy 2017-03-29 09:11:29 +02:00
sysfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.c cfg80211: add tracing to rdev-ops 2012-10-18 10:53:37 +02:00
trace.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-03-31 23:33:04 -04:00
util.c mac80211: support A-MSDU in fast-rx 2018-02-27 13:30:53 +01:00
wext-compat.c cfg80211: fix station info handling bugs 2018-01-18 15:36:18 -05:00
wext-compat.h cfg80211-wext: export symbols only when needed 2015-02-28 21:31:09 +01:00
wext-core.c net: Don't take rtnl_lock() in wireless_nlevent_flush() 2018-03-29 13:47:53 -04:00
wext-priv.c wext: fix potential private ioctl memory content leak 2010-09-20 13:41:40 -04:00
wext-proc.c net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
wext-sme.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wext-spy.c wireless: Convert compare_ether_addr to ether_addr_equal 2012-05-09 20:49:19 -04:00