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mesh: Fix channel switch error during CAC

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Mesh interface would have used its channel parameters that were
configured during initialization even after channel switch due to DFS
radar detection during CAC which could result in a channel switch error.
Fix the error by updating the channel parameters when channel has been
changed from the initial one.

Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com>
This commit is contained in:
Peter Oh 2020-06-30 14:19:00 +02:00 committed by Jouni Malinen
parent 8725909789
commit a27faf2c9a
1 changed files with 38 additions and 0 deletions
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38
wpa_supplicant/mesh.c
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@ -13,6 +13,7 @@
#include "utils/uuid.h"
#include "common/ieee802_11_defs.h"
#include "common/wpa_ctrl.h"
#include "common/hw_features_common.h"
#include "ap/sta_info.h"
#include "ap/hostapd.h"
#include "ap/ieee802_11.h"
@ -207,6 +208,43 @@ static int wpas_mesh_complete(struct wpa_supplicant *wpa_s)
return -1;
}
/*
* Update channel configuration if the channel has changed since the
* initial setting, i.e., due to DFS radar detection during CAC.
*/
if (ifmsh->freq != params->freq.freq) {
struct he_capabilities *he_capab = NULL;
wpa_s->assoc_freq = ifmsh->freq;
ssid->frequency = ifmsh->freq;
if (ifmsh->current_mode)
he_capab = &ifmsh->current_mode->he_capab[
IEEE80211_MODE_MESH];
if (hostapd_set_freq_params(
&params->freq,
ifmsh->conf->hw_mode,
ifmsh->freq,
ifmsh->conf->channel,
ifmsh->conf->enable_edmg,
ifmsh->conf->edmg_channel,
ifmsh->conf->ieee80211n,
ifmsh->conf->ieee80211ac,
ifmsh->conf->ieee80211ax,
ifmsh->conf->secondary_channel,
hostapd_get_oper_chwidth(ifmsh->conf),
hostapd_get_oper_centr_freq_seg0_idx(ifmsh->conf),
hostapd_get_oper_centr_freq_seg1_idx(ifmsh->conf),
ifmsh->conf->vht_capab,
he_capab)) {
wpa_printf(MSG_ERROR,
"Error updating mesh frequency params");
wpa_supplicant_mesh_deinit(wpa_s);
return -1;
}
}
if (ifmsh->mconf->security != MESH_CONF_SEC_NONE &&
wpas_mesh_init_rsn(wpa_s)) {
wpa_printf(MSG_ERROR,