[v8,14/16] mesh: fix channel switch error during CAC

Message ID fcbe607446de39124d8196059fe788ae3d68917e.1535403927.git.peter.oh@bowerswilkins.com
State New
Headers show
Series
  • mesh: enable DFS channels in mesh mode
Related show

Commit Message

Peter Oh Aug. 27, 2018, 9:28 p.m.
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 | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

Patch

diff --git a/wpa_supplicant/mesh.c b/wpa_supplicant/mesh.c
index cdaafd7..a714c15 100644
--- a/wpa_supplicant/mesh.c
+++ b/wpa_supplicant/mesh.c
@@ -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"
@@ -199,10 +200,35 @@  static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s)
 static 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);