WPS: Allow fragment size to be configured

src/eap_peer/eap.c

@@ -1923,6 +1923,15 @@ const char * eap_get_config_phase2(struct eap_sm *sm)
 }
 
 
+int eap_get_config_fragment_size(struct eap_sm *sm)
+{
+	struct eap_peer_config *config = eap_get_config(sm);
+	if (config == NULL)
+		return -1;
+	return config->fragment_size;
+}
+
+
 /**
  * eap_key_available - Get key availability (eapKeyAvailable variable)
  * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()

src/eap_peer/eap_i.h

@@ -345,6 +345,7 @@ const u8 * eap_get_config_otp(struct eap_sm *sm, size_t *len);
 void eap_clear_config_otp(struct eap_sm *sm);
 const char * eap_get_config_phase1(struct eap_sm *sm);
 const char * eap_get_config_phase2(struct eap_sm *sm);
+int eap_get_config_fragment_size(struct eap_sm *sm);
 struct eap_peer_config * eap_get_config(struct eap_sm *sm);
 void eap_set_config_blob(struct eap_sm *sm, struct wpa_config_blob *blob);
 const struct wpa_config_blob *

src/eap_peer/eap_wsc.c

@@ -219,7 +219,11 @@ static void * eap_wsc_init(struct eap_sm *sm)
 		os_free(data);
 		return NULL;
 	}
-	data->fragment_size = WSC_FRAGMENT_SIZE;
+	res = eap_get_config_fragment_size(sm);
+	if (res > 0)
+		data->fragment_size = res;
+	else
+		data->fragment_size = WSC_FRAGMENT_SIZE;
 
 	if (registrar && cfg.pin) {
 		wps_registrar_add_pin(data->wps_ctx->registrar, NULL,