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rrmd: Add DFS channel exclusion support to the RCS (Random Channel Selection) algo when DFS is disabled

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Fixes: WIFI-15270
Signed-off-by: Tanya Singh <tanya_singh@accton.com>
This commit is contained in:
Tanya Singh 2025-12-10 14:13:46 +08:00
parent 7d641524e1
commit cd6a3a30d1
1 changed files with 33 additions and 10 deletions
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43
feeds/ucentral/rrmd/files/usr/share/rrmd/policy_chanutil.uc
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@ -364,9 +364,9 @@ function switch_status_check(iface, dfs_enabled_5g_flag) {
let cac_time = trim(_cac_time.read('all'));
_cac_time.close();
// if cac_time is a valid number, set timer to cac_time + 5 seconds
// if cac_time is a valid number, set timer to cac_time + 10 seconds
if (cac_time > 0 && match(cac_time, /^[0-9]+$/)) {
timer = int(cac_time) + 5;
timer = int(cac_time) + 10;
}
while (p < timer) {
@ -537,7 +537,7 @@ function get_chan_util(radio_band, sleep_time) {
return chan_util;
}
function random_channel_selection(iface, band, htmode, chan_list_valid) {
function random_channel_selection(iface, band, htmode, chan_list_valid, exclude_dfs) {
let math = require('math');
let bw = replace(htmode, /[^0-9]/g, '');
let iface_num = replace(iface, /[^0-9]/g, '');
@ -547,7 +547,9 @@ function random_channel_selection(iface, band, htmode, chan_list_valid) {
}
// channel list from the driver based on the country code
let chan_list_cc = global.phy.phys[phy_id].channels;
let chan_list_cc = uniq(sort(global.phy.phys[phy_id].channels, (a, b) => a - b));
// DFS channel list from the driver
let dfs_chan_list = global.phy.phys[phy_id].dfs_channels || [];
// complete channel list
let chan_list_default = {};
// allowed channel list to select random channel from
@ -555,6 +557,7 @@ function random_channel_selection(iface, band, htmode, chan_list_valid) {
let chan_list_init = [];
let chan_list_legal = [];
let _chan_list_legal = [];
ulog_info(`[%s] Channel list from the driver = %s \n`, iface, chan_list_cc);
ulog_info(`[%s] Selected channel list from config (default channel list shall be used in case channels haven't been selected) = %s \n`, iface, (chan_list_valid || '[]'));
@ -663,9 +666,29 @@ function random_channel_selection(iface, band, htmode, chan_list_valid) {
if (band == '5g' && (bw == "80" || bw == "40")) {
// exclude last channels from the channel list when bw is 80MHz or 40MHz to avoid selecting a channel with a secondary channel that cannot be supported
chan_list_legal = slice(chan_list_init, 0, length(chan_list_init)-1) ;
_chan_list_legal = slice(chan_list_init, 0, length(chan_list_init)-1) ;
} else {
chan_list_legal = chan_list_init;
_chan_list_legal = chan_list_init;
}
// check if dfs is enabled or disabled for 5G radio; if dfs is disabled, remove dfs channels from chan_list_legal
if (band == '5g' && exclude_dfs == true) {
ulog_info(`[%s] DFS Channel list from the driver = %s \n`, iface, dfs_chan_list);
for (let _legal_chan in _chan_list_legal) {
let is_dfs_chan = false;
for (let dfs_chan in dfs_chan_list) {
if (dfs_chan == _legal_chan) {
is_dfs_chan = true;
break;
}
}
if (is_dfs_chan == false) {
push(chan_list_legal, _legal_chan);
}
}
} else {
chan_list_legal = _chan_list_legal;
}
if (chan_list_valid) {
@ -710,13 +733,13 @@ function check_center_channel(chosen_random_channel, current_channel, band, htmo
return ret;
}
function algo_rcs(iface, current_channel, band, htmode, selected_channels) {
function algo_rcs(iface, current_channel, band, htmode, selected_channels, exclude_dfs) {
let chosen_random_channel = 0;
let res = 0;
let same_center_channel = false;
// random_channel_selection script will help to select random channel
chosen_random_channel = random_channel_selection(iface, band, htmode, selected_channels);
chosen_random_channel = random_channel_selection(iface, band, htmode, selected_channels, exclude_dfs);
stats_info_write("/tmp/rrm_random_channel_" + iface, chosen_random_channel);
if (chosen_random_channel == current_channel) {
@ -826,7 +849,7 @@ function channel_optimize() {
// get radio's uci config
htmode[j] = wireless_status[radio_id].config.htmode;
acs_exclude_dfs[j] = wireless_status[radio_id].config.acs_exclude_dfs;
acs_exclude_dfs[j] = wireless_status[radio_id].config.acs_exclude_dfs || false;
channel_config[j] = wireless_status[radio_id].config.channel;
selected_channels[j] = wireless_status[radio_id].config.channels;
@ -961,7 +984,7 @@ function channel_optimize() {
let assign_max_chan_util = 0;
// call RCS for multiple random chan
let chan_scan = algo_rcs(radio_iface[l], curr_chan_list[num_chan-1], radio_band[l], htmode[l], selected_channels[l]);
let chan_scan = algo_rcs(radio_iface[l], curr_chan_list[num_chan-1], radio_band[l], htmode[l], selected_channels[l], acs_exclude_dfs[l]);
curr_chan_list[num_chan] = stats_info_read("/tmp/rrm_random_channel_" + radio_iface[l]);
if (chan_scan == 1) {