WPS: Make fragment size configurable for EAP-WSC peer

"wpa_cli set wps_fragment_size <val>" can now be used to configure the
fragment size limit for EAP-WSC.

src/eap_peer/eap_wsc.c

@@ -224,6 +224,8 @@ static void * eap_wsc_init(struct eap_sm *sm)
 		data->fragment_size = res;
 	else
 		data->fragment_size = WSC_FRAGMENT_SIZE;
+	wpa_printf(MSG_DEBUG, "EAP-WSC: Fragment size limit %u",
+		   (unsigned int) data->fragment_size);
 
 	if (registrar && cfg.pin) {
 		wps_registrar_add_pin(data->wps_ctx->registrar, NULL, NULL,

wpa_supplicant/ctrl_iface.c

@@ -80,6 +80,8 @@ static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
 	} else if (os_strcasecmp(cmd, "dot11RSNAConfigSATimeout") == 0) {
 		if (wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, atoi(value)))
 			ret = -1;
+	} else if (os_strcasecmp(cmd, "wps_fragment_size") == 0) {
+		wpa_s->wps_fragment_size = atoi(value);
 	} else
 		ret = -1;
 

wpa_supplicant/wpa_supplicant_i.h

@@ -437,6 +437,7 @@ struct wpa_supplicant {
 
 	int after_wps;
 	unsigned int wps_freq;
+	int wps_fragment_size;
 };
 
 

wpa_supplicant/wps_supplicant.c

@@ -673,6 +673,8 @@ int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
 	if (ssid == NULL)
 		return -1;
 	wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
+	if (wpa_s->wps_fragment_size)
+		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 			       wpa_s, NULL);
 	wpas_wps_reassoc(wpa_s, ssid);
@@ -698,6 +700,8 @@ int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 		os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
 	}
 	wpa_config_set(ssid, "phase1", val, 0);
+	if (wpa_s->wps_fragment_size)
+		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 			       wpa_s, NULL);
 	wpas_wps_reassoc(wpa_s, ssid);
@@ -788,6 +792,8 @@ int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 	if (res < 0 || res >= end - pos)
 		return -1;
 	wpa_config_set(ssid, "phase1", val, 0);
+	if (wpa_s->wps_fragment_size)
+		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 			       wpa_s, NULL);
 	wpas_wps_reassoc(wpa_s, ssid);