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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 | 25 +++++++++++++++++++------
1 file changed, 19 insertions(+), 6 deletions(-)
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -2436,7 +2436,7 @@ 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;
@@ -2445,7 +2445,10 @@ 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;
}
@@ -2474,6 +2477,8 @@ void ibss_mesh_setup_freq(struct wpa_sup
int chwidth, seg0, seg1;
u32 vht_caps = 0;
bool is_24ghz, is_6ghz;
+ bool dfs_enabled = wpa_s->conf->country[0] &&
+ (wpa_s->drv_flags & WPA_DRIVER_FLAGS_RADAR);
freq->freq = ssid->frequency;
@@ -2570,8 +2575,11 @@ void ibss_mesh_setup_freq(struct wpa_sup
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;
freq->channel = pri_chan->chan;
@@ -2604,8 +2612,11 @@ void ibss_mesh_setup_freq(struct wpa_sup
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))
@@ -2694,7 +2705,7 @@ skip_to_6ghz:
return;
/* Back to HT configuration if channel not usable */
- if (!ibss_mesh_is_80mhz_avail(channel, mode))
+ if (!ibss_mesh_is_80mhz_avail(channel, mode, dfs_enabled))
return;
chwidth = CONF_OPER_CHWIDTH_80MHZ;
@@ -2708,7 +2719,7 @@ skip_to_6ghz:
* above; check the remaining four 20 MHz channels for the total
* of 160 MHz bandwidth.
*/
- if (!ibss_mesh_is_80mhz_avail(channel + 16, mode))
+ if (!ibss_mesh_is_80mhz_avail(channel + 16, mode, dfs_enabled))
return;
for (j = 0; j < ARRAY_SIZE(bw160); j++) {
@@ -2738,10 +2749,12 @@ skip_to_6ghz:
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;
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