From 8de8cd8380af0c43d4fde67a668d79ef73b26b26 Mon Sep 17 00:00:00 2001 From: Peter Oh 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 Signed-off-by: Peter Oh --- 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 @@ -2698,7 +2698,7 @@ 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; @@ -2707,7 +2707,10 @@ 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; } @@ -2834,7 +2837,7 @@ 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; @@ -2858,8 +2861,11 @@ 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) @@ -2885,8 +2891,11 @@ 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)) @@ -2940,7 +2949,7 @@ 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, @@ -2985,7 +2994,7 @@ 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; @@ -2999,7 +3008,7 @@ 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; @@ -3027,10 +3036,12 @@ 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; @@ -3085,6 +3096,7 @@ void ibss_mesh_setup_freq(struct wpa_sup int i, 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; @@ -3133,9 +3145,9 @@ 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; }