From 8de8cd8380af0c43d4fde67a668d79ef73b26b26 Mon Sep 17 00:00:00 2001
From: Peter Oh <peter.oh@bowerswilkins.com>
Date: Tue, 30 Jun 2020 14:18:58 +0200
Subject: [PATCH 10/19] mesh: Allow DFS channels to be selected if dfs is
enabled
Note: DFS is assumed to be usable if a country code has been set
Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net>
Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com>
---
wpa_supplicant/wpa_supplicant.c | 38 ++++++++++++++++++++++-----------
1 file changed, 25 insertions(+), 13 deletions(-)
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -2831,7 +2831,7 @@ static int drv_supports_vht(struct wpa_s
}
-static bool ibss_mesh_is_80mhz_avail(int channel, struct hostapd_hw_modes *mode)
+static bool ibss_mesh_is_80mhz_avail(int channel, struct hostapd_hw_modes *mode, bool dfs_enabled)
{
int i;
@@ -2840,7 +2840,10 @@ static bool ibss_mesh_is_80mhz_avail(int
chan = hw_get_channel_chan(mode, i, NULL);
if (!chan ||
- chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
+ chan->flag & HOSTAPD_CHAN_DISABLED)
+ return false;
+
+ if (!dfs_enabled && chan->flag & (HOSTAPD_CHAN_RADAR | HOSTAPD_CHAN_NO_IR))
return false;
}
@@ -2967,7 +2970,7 @@ static void ibss_mesh_select_40mhz(struc
const struct wpa_ssid *ssid,
struct hostapd_hw_modes *mode,
struct hostapd_freq_params *freq,
- int obss_scan) {
+ int obss_scan, bool dfs_enabled) {
int chan_idx;
struct hostapd_channel_data *pri_chan = NULL, *sec_chan = NULL;
int i, res;
@@ -2991,8 +2994,11 @@ static void ibss_mesh_select_40mhz(struc
return;
/* Check primary channel flags */
- if (pri_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
+ if (pri_chan->flag & HOSTAPD_CHAN_DISABLED)
return;
+ if (pri_chan->flag & (HOSTAPD_CHAN_RADAR | HOSTAPD_CHAN_NO_IR))
+ if (!dfs_enabled)
+ return;
#ifdef CONFIG_HT_OVERRIDES
if (ssid->disable_ht40)
@@ -3018,8 +3024,11 @@ static void ibss_mesh_select_40mhz(struc
return;
/* Check secondary channel flags */
- if (sec_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
+ if (sec_chan->flag & HOSTAPD_CHAN_DISABLED)
return;
+ if (sec_chan->flag & (HOSTAPD_CHAN_RADAR | HOSTAPD_CHAN_NO_IR))
+ if (!dfs_enabled)
+ return;
if (ht40 == -1) {
if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS))
@@ -3074,7 +3083,7 @@ static bool ibss_mesh_select_80_160mhz(s
const struct wpa_ssid *ssid,
struct hostapd_hw_modes *mode,
struct hostapd_freq_params *freq,
- int ieee80211_mode, bool is_6ghz) {
+ int ieee80211_mode, bool is_6ghz, bool dfs_enabled) {
static const int bw80[] = {
5180, 5260, 5500, 5580, 5660, 5745, 5825,
5955, 6035, 6115, 6195, 6275, 6355, 6435,
@@ -3119,7 +3128,7 @@ static bool ibss_mesh_select_80_160mhz(s
goto skip_80mhz;
/* Use 40 MHz if channel not usable */
- if (!ibss_mesh_is_80mhz_avail(channel, mode))
+ if (!ibss_mesh_is_80mhz_avail(channel, mode, dfs_enabled))
goto skip_80mhz;
chwidth = CONF_OPER_CHWIDTH_80MHZ;
@@ -3133,7 +3142,7 @@ static bool ibss_mesh_select_80_160mhz(s
if ((mode->he_capab[ieee80211_mode].phy_cap[
HE_PHYCAP_CHANNEL_WIDTH_SET_IDX] &
HE_PHYCAP_CHANNEL_WIDTH_SET_160MHZ_IN_5G) && is_6ghz &&
- ibss_mesh_is_80mhz_avail(channel + 16, mode)) {
+ ibss_mesh_is_80mhz_avail(channel + 16, mode, dfs_enabled)) {
for (j = 0; j < ARRAY_SIZE(bw160); j++) {
if (freq->freq == bw160[j]) {
chwidth = CONF_OPER_CHWIDTH_160MHZ;
@@ -3161,10 +3170,12 @@ static bool ibss_mesh_select_80_160mhz(s
if (!chan)
continue;
- if (chan->flag & (HOSTAPD_CHAN_DISABLED |
- HOSTAPD_CHAN_NO_IR |
- HOSTAPD_CHAN_RADAR))
+ if (chan->flag & HOSTAPD_CHAN_DISABLED)
continue;
+ if (chan->flag & (HOSTAPD_CHAN_RADAR |
+ HOSTAPD_CHAN_NO_IR))
+ if (!dfs_enabled)
+ continue;
/* Found a suitable second segment for 80+80 */
chwidth = CONF_OPER_CHWIDTH_80P80MHZ;
@@ -3219,6 +3230,7 @@ void ibss_mesh_setup_freq(struct wpa_sup
int obss_scan = 1;
u8 channel;
bool is_6ghz, is_24ghz;
+ bool dfs_enabled = wpa_s->conf->country[0] && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_RADAR);
freq->freq = ssid->frequency;
@@ -3261,9 +3273,9 @@ void ibss_mesh_setup_freq(struct wpa_sup
freq->channel = channel;
/* Setup higher BW only for 5 GHz */
if (mode->mode == HOSTAPD_MODE_IEEE80211A) {
- ibss_mesh_select_40mhz(wpa_s, ssid, mode, freq, obss_scan);
+ ibss_mesh_select_40mhz(wpa_s, ssid, mode, freq, obss_scan, dfs_enabled);
if (!ibss_mesh_select_80_160mhz(wpa_s, ssid, mode, freq,
- ieee80211_mode, is_6ghz))
+ ieee80211_mode, is_6ghz, dfs_enabled))
freq->he_enabled = freq->vht_enabled = false;
}