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https://github.com/romkatv/powerlevel10k.git
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wifi on linux: fix bugs and speed things up
This commit is contained in:
Roman Perepelitsa
parent
dd5948e5e3
commit
cababbeee2
5 changed files with 89 additions and 95 deletions
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@ -1475,15 +1475,11 @@
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# Parameter | Meaning
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# ----------------------+---------------
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# P9K_WIFI_SSID | service set identifier, a.k.a. network name
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"; empty if unknown
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# P9K_WIFI_LAST_TX_RATE | wireless transmit rate in megabits per second
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# P9K_WIFI_RSSI | signal strength in dBm, from -120 to 0
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# P9K_WIFI_NOISE | noise in dBm, from -120 to 0
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# P9K_WIFI_BARS | signal strength in bars, from 0 to 4 (derived from P9K_WIFI_RSSI and P9K_WIFI_NOISE)
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#
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# All parameters except P9K_WIFI_BARS are extracted from the output of the following command:
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#
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# /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I
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####################################[ time: current time ]####################################
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# Current time color.
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@ -1452,15 +1452,11 @@
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# Parameter | Meaning
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# ----------------------+---------------
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# P9K_WIFI_SSID | service set identifier, a.k.a. network name
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"; empty if unknown
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# P9K_WIFI_LAST_TX_RATE | wireless transmit rate in megabits per second
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# P9K_WIFI_RSSI | signal strength in dBm, from -120 to 0
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# P9K_WIFI_NOISE | noise in dBm, from -120 to 0
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# P9K_WIFI_BARS | signal strength in bars, from 0 to 4 (derived from P9K_WIFI_RSSI and P9K_WIFI_NOISE)
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#
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# All parameters except P9K_WIFI_BARS are extracted from the output of the following command:
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#
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# /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I
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####################################[ time: current time ]####################################
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# Current time color.
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@ -1452,15 +1452,11 @@
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# Parameter | Meaning
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# ----------------------+---------------
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# P9K_WIFI_SSID | service set identifier, a.k.a. network name
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"; empty if unknown
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# P9K_WIFI_LAST_TX_RATE | wireless transmit rate in megabits per second
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# P9K_WIFI_RSSI | signal strength in dBm, from -120 to 0
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# P9K_WIFI_NOISE | noise in dBm, from -120 to 0
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# P9K_WIFI_BARS | signal strength in bars, from 0 to 4 (derived from P9K_WIFI_RSSI and P9K_WIFI_NOISE)
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#
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# All parameters except P9K_WIFI_BARS are extracted from the output of the following command:
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#
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# /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I
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####################################[ time: current time ]####################################
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# Current time color.
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@ -1552,15 +1552,11 @@
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# Parameter | Meaning
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# ----------------------+---------------
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# P9K_WIFI_SSID | service set identifier, a.k.a. network name
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"
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# P9K_WIFI_LINK_AUTH | authentication protocol such as "wpa2-psk" or "none"; empty if unknown
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# P9K_WIFI_LAST_TX_RATE | wireless transmit rate in megabits per second
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# P9K_WIFI_RSSI | signal strength in dBm, from -120 to 0
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# P9K_WIFI_NOISE | noise in dBm, from -120 to 0
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# P9K_WIFI_BARS | signal strength in bars, from 0 to 4 (derived from P9K_WIFI_RSSI and P9K_WIFI_NOISE)
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#
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# All parameters except P9K_WIFI_BARS are extracted from the output of the following command:
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#
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# /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I
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####################################[ time: current time ]####################################
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# Current time color.
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@ -4903,19 +4903,13 @@ prompt_wifi() {
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(( _p9k__has_upglob )) || typeset -g "_p9k__segment_val_${_p9k__prompt_side}[_p9k__segment_index]"=$_p9k__prompt[len+1,-1]
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}
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_p9k_prompt_wifi_init() {
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if [[ -x /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport || -f /proc/net/wireless ]]; then
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if [[ -x /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport ||
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-r /proc/net/wireless && -n $commands[iw] ]]; then
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typeset -g _p9k__wifi_on=
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typeset -g P9K_WIFI_LAST_TX_RATE=
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typeset -g P9K_WIFI_SSID=
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# possible refactor to set link_auth only on darwin
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# or also possible to simply set linux link_auth to empty string and leave this scope as-is
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if [[ $_p9k_os == OSX ]]; then
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typeset -g P9K_WIFI_LINK_AUTH=
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fi
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typeset -g P9K_WIFI_LINK_AUTH=
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typeset -g P9K_WIFI_RSSI=
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typeset -g P9K_WIFI_NOISE=
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typeset -g P9K_WIFI_BARS=
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@ -4925,71 +4919,88 @@ _p9k_prompt_wifi_init() {
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fi
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}
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_p9k_prompt_wifi_compute() {
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_p9k_worker_async _p9k_prompt_wifi_async _p9k_prompt_wifi_sync
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}
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_p9k_prompt_wifi_async() {
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local last_tx_rate ssid link_auth rssi noise bars on out line v state
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{
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if [[ $_p9k_os == OSX ]]; then
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local airport=/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport
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[[ -x $airport ]] || return 0
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out="$($airport -I)" || return 0
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for line in ${${${(f)out}##[[:space:]]#}%%[[:space:]]#}; do
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v=${line#*: }
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case $line[1,-$#v-3] in
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agrCtlRSSI) rssi=$v;;
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agrCtlNoise) noise=$v;;
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state) state=$v;;
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lastTxRate) last_tx_rate=$v;;
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link\ auth) link_auth=$v;;
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SSID) ssid=$v;;
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esac
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done
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elif [[ $_p9k_os == Linux]]; then
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# iw tools only output 'noise' from a dump that requires superuser and a background service to be running, which probably isn't, so a separate process is needed
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# /proc/net/wireless displays noise level up to date, w/o requiring superuser
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local proc_less=/proc/net/wireless
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[[ -f $proc_less ]] || return 0
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# this method using iw is over 10x faster than the network manager method in benchmarking
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# it's possible some systems are still using 'wireless_tools' (iw's ancestor) but they are long deprecated anyway
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local device="$(cut -d\ -f2 <<< $(iw dev | grep Interface))" || return 0
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out="$(iw dev $device link)" || return 0
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# 'running' state guaranteed by 'device' and 'proc_less' var assignment
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state='running'
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local proc_out="$(grep $device $proc_less | tr -s ' ')" || return 0
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# using cut is more performant than awk,sed,perl, but I haven't timed against zsh expansion pattern
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rssi="${$(cut -d\ -f4 <<< $proc_out)%.*}"
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noise="$(cut -d\ -f5 <<< $proc_out)"
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# it's possible to get boolean from iw to check authorization status from a dump, but getting the method (if any) requires superuser
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link_auth=""
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for line in ${${${(f)out}##[[:space:]]#}%%[[:space:]]#}; do
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v=${line#*: }
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case ${line[1,-$#v-3]} in
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SSID) ssid=$v;;
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# formatting here to remove ' dBm' from tail
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# note 'rssi' is also assigned up above, but this replacement pattern might be faster than using cut - needs benchmarking
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signal) rssi=${v//[^0-9-]/};;
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# formatting here to transform from 'xxx.x MBit/s MCS xx short GI' to 'xxx.x' where x's are integers
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# benchmarking shows grep here is extremely fast (under .1 msc even on older hw), but you can change to native zsh pattern if you want
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tx\ bitrate) last_tx_rate=$(cut -d\ -f1 <<< $v);;
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esac
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done
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fi
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if [[ $state != running || $rssi != (0|-<->) || $noise != (0|-<->) ]]; then
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rssi=
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noise=
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last_tx_rate=
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link_auth=
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ssid=
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bars=
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local airport=/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport
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local last_tx_rate ssid link_auth rssi noise bars on out line v state iface
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{
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if [[ -x $airport ]]; then
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out="$($airport -I)" || return 0
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for line in ${${${(f)out}##[[:space:]]#}%%[[:space:]]#}; do
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v=${line#*: }
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case $line[1,-$#v-3] in
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agrCtlRSSI) rssi=$v;;
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agrCtlNoise) noise=$v;;
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state) state=$v;;
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lastTxRate) last_tx_rate=$v;;
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link\ auth) link_auth=$v;;
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SSID) ssid=$v;;
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esac
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done
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if [[ $state != running || $rssi != (0|-<->) || $noise != (0|-<->) ]]; then
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rssi=
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noise=
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last_tx_rate=
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link_auth=
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ssid=
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return 0
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fi
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on=1
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elif [[ -r /proc/net/wireless && -n $commands[iw] ]]; then
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# Content example (https://github.com/romkatv/powerlevel10k/pull/973#issuecomment-680251804):
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#
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# Inter-| sta-| Quality | Discarded packets | Missed | WE
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# face | tus | link level noise | nwid crypt frag retry misc | beacon | 22
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# wlp3s0: 0000 58. -52. -256 0 0 0 0 76 0
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local -a lines
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lines=(${${(f)"$(</proc/net/wireless)"}:#*\|*}) || return 0
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(( $#lines == 1 )) || return 0
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local parts=(${=lines[1]})
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iface=${parts[1]%:}
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state=${parts[2]}
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rssi=${parts[4]%.*}
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noise=${parts[5]%.*}
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if [[ -z $iface || $state != 0## || $rssi != (0|-<->) || $noise != (0|-<->) ]]; then
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rssi=
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noise=
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return 0
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fi
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# Output example (https://github.com/romkatv/powerlevel10k/pull/973#issuecomment-680251804):
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#
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# Connected to 74:83:c2:be:76:da (on wlp3s0)
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# SSID: DailyGrindGuest1
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# freq: 5745
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# RX: 35192066 bytes (27041 packets)
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# TX: 4090471 bytes (24287 packets)
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# signal: -52 dBm
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# rx bitrate: 243.0 MBit/s VHT-MCS 6 40MHz VHT-NSS 2
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# tx bitrate: 240.0 MBit/s VHT-MCS 5 40MHz short GI VHT-NSS 2
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#
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# bss flags: short-slot-time
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# dtim period: 1
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# beacon int: 100
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lines=(${(f)"$(command iw dev $iface link)"}) || return 0
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local -a match mbegin mend
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for line in $lines; do
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if [[ $line == (#b)[[:space:]]#SSID:[[:space:]]##([^[:space:]]##) ]]; then
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ssid=$match[1]
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elif [[ $line == (#b)[[:space:]]#'tx bitrate:'[[:space:]]##([^[:space:]]##)' MBit/s'* ]]; then
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last_tx_rate=$match[1]
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[[ $last_tx_rate == <->.<-> ]] && last_tx_rate=${${last_tx_rate%%0#}%.}
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fi
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done
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if [[ -z $ssid || -z $last_tx_rate ]]; then
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rssi=
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noise=
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ssid=
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last_tx_rate=
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return 0
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fi
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on=1
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else
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return 0
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fi
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# https://www.speedguide.net/faq/how-to-read-rssisignal-and-snrnoise-ratings-440
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@ -5006,7 +5017,6 @@ _p9k_prompt_wifi_async() {
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else
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bars=0
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fi
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on=1
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} always {
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if [[ $_p9k__wifi_on != $on ||
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$P9K_WIFI_LAST_TX_RATE != $last_tx_rate ||
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@ -5035,7 +5045,7 @@ _p9k_prompt_wifi_async() {
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}
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}
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function _p9k_prompt_wifi_sync() {
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_p9k_prompt_wifi_sync() {
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if [[ -n $REPLY ]]; then
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eval $REPLY
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_p9k_worker_reply $REPLY
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