diff mbox series

[v6,14/15] mesh: fix channel switch error during CAC

Message ID b19d4ea81b1e4c75eb986c8e734c6c6a44d1a671.1527814610.git.peter.oh@bowerswilkins.com
State Changes Requested
Headers show
Series mesh: enable DFS channels in mesh mode | expand

Commit Message

Peter Oh June 1, 2018, 1:02 a.m. UTC 
From: Peter Oh <peter.oh@bowerswilkins.com>

Mesh interface has used its channel parameters that configured
during its initialization even after channel switched due to
DFS radar detection during CAC which caused channel switch error.
This change fixes the error by updating its channel parameters
when channel's been changed from initial one.

Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com>
---
 wpa_supplicant/mesh.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
diff mbox series

Patch

diff --git a/wpa_supplicant/mesh.c b/wpa_supplicant/mesh.c
index 3cbfcf3..eb36ef8 100644
--- a/wpa_supplicant/mesh.c
+++ b/wpa_supplicant/mesh.c
@@ -396,10 +396,35 @@  void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 void wpas_mesh_complete_cb(void *ctx)
 {
 	struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)ctx;
+	struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 	struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
 	struct wpa_ssid *ssid = wpa_s->current_ssid;
 	int ret = 0;
 
+	/*
+	 * inspect if channel's been changed since initialized.
+	 * i.e. DFS radar detection
+	 */
+	if (ifmsh->freq != params->freq.freq) {
+		wpa_s->assoc_freq = ifmsh->freq;
+		ssid->frequency = ifmsh->freq;
+		if (hostapd_set_freq_params(&params->freq,
+				ifmsh->conf->hw_mode,
+				ifmsh->freq,
+				ifmsh->conf->channel,
+				ifmsh->conf->ieee80211n,
+				ifmsh->conf->ieee80211ac,
+				ifmsh->conf->secondary_channel,
+				ifmsh->conf->vht_oper_chwidth,
+				ifmsh->conf->vht_oper_centr_freq_seg0_idx,
+				ifmsh->conf->vht_oper_centr_freq_seg1_idx,
+				ifmsh->conf->vht_capab)) {
+			wpa_printf(MSG_ERROR, "Error updating mesh frequency params.");
+			wpa_supplicant_mesh_deinit(wpa_s);
+			return;
+		}
+	}
+
 	if (wpas_mesh_init_rsn(wpa_s)) {
 		wpa_printf(MSG_ERROR, "Init RSN failed. Deinit mesh...");
 		wpa_supplicant_mesh_deinit(wpa_s);