From 7f8ac02e8524633d92941f7934440c19f1002616 Mon Sep 17 00:00:00 2001 From: Markus Theil Date: Tue, 30 Jun 2020 13:53:17 +0200 Subject: [PATCH] HE/VHT: Fix frequency setup with HE enabled Some places in the code base were not using the wrappers like hostapd_set_oper_centr_freq_seg0_idx and friends. This could lead to errors, for example when joining 80 MHz mesh networks. Fix this, by enforcing usage of these wrappers. wpa_supplicant_conf_ap_ht() now checks for HE capability before dealing with VHT in order for these wrappers to work, as they first check HE support in the config. While doing these changes, I've noticed that the extra channel setup code for mesh networks in wpa_supplicant/mesh.c should not be necessary anymore and dropped it. wpa_supplicant_conf_ap_ht() should handle this setup already. Acked-by: John Crispin Signed-off-by: Markus Theil --- src/ap/dfs.c | 8 ++++---- wpa_supplicant/ap.c | 40 +++++++++++++++++++++++----------------- wpa_supplicant/mesh.c | 24 ------------------------ 3 files changed, 27 insertions(+), 45 deletions(-) diff --git a/src/ap/dfs.c b/src/ap/dfs.c index 3c078b9cb..f62da49a7 100644 --- a/src/ap/dfs.c +++ b/src/ap/dfs.c @@ -1028,7 +1028,7 @@ static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface) unsigned int i; int err = 1; struct hostapd_hw_modes *cmode = iface->current_mode; - u8 current_vht_oper_chwidth = iface->conf->vht_oper_chwidth; + u8 current_vht_oper_chwidth = hostapd_get_oper_chwidth(iface->conf); wpa_printf(MSG_DEBUG, "%s called (CAC active: %s, CSA active: %s)", __func__, iface->cac_started ? "yes" : "no", @@ -1089,8 +1089,8 @@ static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface) "freq=%d chan=%d sec_chan=%d", channel->freq, channel->chan, secondary_channel); - new_vht_oper_chwidth = iface->conf->vht_oper_chwidth; - iface->conf->vht_oper_chwidth = current_vht_oper_chwidth; + new_vht_oper_chwidth = hostapd_get_oper_chwidth(iface->conf); + hostapd_set_oper_chwidth(iface->conf, current_vht_oper_chwidth); /* Setup CSA request */ os_memset(&csa_settings, 0, sizeof(csa_settings)); @@ -1130,7 +1130,7 @@ static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface) iface->freq = channel->freq; iface->conf->channel = channel->chan; iface->conf->secondary_channel = secondary_channel; - iface->conf->vht_oper_chwidth = new_vht_oper_chwidth; + hostapd_set_oper_chwidth(iface->conf, new_vht_oper_chwidth); hostapd_set_oper_centr_freq_seg0_idx(iface->conf, oper_centr_freq_seg0_idx); hostapd_set_oper_centr_freq_seg1_idx(iface->conf, diff --git a/wpa_supplicant/ap.c b/wpa_supplicant/ap.c index de3027dd7..895b62ae3 100644 --- a/wpa_supplicant/ap.c +++ b/wpa_supplicant/ap.c @@ -52,6 +52,7 @@ static void wpas_conf_ap_vht(struct wpa_supplicant *wpa_s, #ifdef CONFIG_P2P u8 center_chan = 0; u8 channel = conf->channel; + u8 freq_seg_idx; #endif /* CONFIG_P2P */ if (!conf->secondary_channel) @@ -59,19 +60,21 @@ static void wpas_conf_ap_vht(struct wpa_supplicant *wpa_s, /* Use the maximum oper channel width if it's given. */ if (ssid->max_oper_chwidth) - conf->vht_oper_chwidth = ssid->max_oper_chwidth; + hostapd_set_oper_chwidth(conf, ssid->max_oper_chwidth); ieee80211_freq_to_chan(ssid->vht_center_freq2, - &conf->vht_oper_centr_freq_seg1_idx); + &freq_seg_idx); + hostapd_set_oper_centr_freq_seg1_idx(conf, freq_seg_idx); if (!ssid->p2p_group) { if (!ssid->vht_center_freq1 || - conf->vht_oper_chwidth == CHANWIDTH_USE_HT) + hostapd_get_oper_chwidth(conf) == CHANWIDTH_USE_HT) goto no_vht; ieee80211_freq_to_chan(ssid->vht_center_freq1, - &conf->vht_oper_centr_freq_seg0_idx); + &freq_seg_idx); + hostapd_set_oper_centr_freq_seg0_idx(conf, freq_seg_idx); wpa_printf(MSG_DEBUG, "VHT seg0 index %d for AP", - conf->vht_oper_centr_freq_seg0_idx); + hostapd_get_oper_centr_freq_seg0_idx(conf)); return; } @@ -96,14 +99,14 @@ static void wpas_conf_ap_vht(struct wpa_supplicant *wpa_s, * try oper_cwidth 160 MHz first then VHT 80 MHz, if 160 MHz is * not supported. */ - conf->vht_oper_chwidth = CHANWIDTH_160MHZ; + hostapd_set_oper_chwidth(conf, CHANWIDTH_160MHZ); center_chan = wpas_p2p_get_vht160_center(wpa_s, mode, channel); if (center_chan) { wpa_printf(MSG_DEBUG, "VHT center channel %u for auto-selected 160 MHz bandwidth", center_chan); } else { - conf->vht_oper_chwidth = CHANWIDTH_80MHZ; + hostapd_set_oper_chwidth(conf, CHANWIDTH_80MHZ); center_chan = wpas_p2p_get_vht80_center(wpa_s, mode, channel); wpa_printf(MSG_DEBUG, @@ -115,9 +118,9 @@ static void wpas_conf_ap_vht(struct wpa_supplicant *wpa_s, if (!center_chan) goto no_vht; - conf->vht_oper_centr_freq_seg0_idx = center_chan; + hostapd_set_oper_centr_freq_seg0_idx(conf, center_chan); wpa_printf(MSG_DEBUG, "VHT seg0 index %d for P2P GO", - conf->vht_oper_centr_freq_seg0_idx); + hostapd_get_oper_centr_freq_seg0_idx(conf)); return; #endif /* CONFIG_P2P */ @@ -125,9 +128,9 @@ no_vht: wpa_printf(MSG_DEBUG, "No VHT higher bandwidth support for the selected channel %d", conf->channel); - conf->vht_oper_centr_freq_seg0_idx = - conf->channel + conf->secondary_channel * 2; - conf->vht_oper_chwidth = CHANWIDTH_USE_HT; + hostapd_set_oper_centr_freq_seg0_idx( + conf, conf->channel + conf->secondary_channel * 2); + hostapd_set_oper_chwidth(conf, CHANWIDTH_USE_HT); } @@ -231,16 +234,19 @@ int wpa_supplicant_conf_ap_ht(struct wpa_supplicant *wpa_s, HT_CAP_INFO_TX_STBC | HT_CAP_INFO_MAX_AMSDU_SIZE); + /* check this before VHT, because setting oper chan + * width and friends is the same call for HE and VHT + * and checks if conf->ieee8021ax == 1 */ + if (mode->he_capab[wpas_mode_to_ieee80211_mode( + ssid->mode)].he_supported && + ssid->he) + conf->ieee80211ax = 1; + if (mode->vht_capab && ssid->vht) { conf->ieee80211ac = 1; conf->vht_capab |= mode->vht_capab; wpas_conf_ap_vht(wpa_s, ssid, conf, mode); } - - if (mode->he_capab[wpas_mode_to_ieee80211_mode( - ssid->mode)].he_supported && - ssid->he) - conf->ieee80211ax = 1; } } diff --git a/wpa_supplicant/mesh.c b/wpa_supplicant/mesh.c index c085466b1..8cacf28e1 100644 --- a/wpa_supplicant/mesh.c +++ b/wpa_supplicant/mesh.c @@ -333,30 +333,6 @@ static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s, frequency); goto out_free; } - if (ssid->ht40) - conf->secondary_channel = ssid->ht40; - if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) { - if (ssid->max_oper_chwidth != DEFAULT_MAX_OPER_CHWIDTH) - conf->vht_oper_chwidth = ssid->max_oper_chwidth; - switch (conf->vht_oper_chwidth) { - case CHANWIDTH_80MHZ: - case CHANWIDTH_80P80MHZ: - ieee80211_freq_to_chan( - frequency, - &conf->vht_oper_centr_freq_seg0_idx); - conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2; - break; - case CHANWIDTH_160MHZ: - ieee80211_freq_to_chan( - frequency, - &conf->vht_oper_centr_freq_seg0_idx); - conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2; - conf->vht_oper_centr_freq_seg0_idx += 40 / 5; - break; - } - ieee80211_freq_to_chan(ssid->vht_center_freq2, - &conf->vht_oper_centr_freq_seg1_idx); - } if (ssid->mesh_basic_rates == NULL) { /*