2 * WPA Supplicant - Basic mesh mode routines
3 * Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "utils/uuid.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/wpa_ctrl.h"
16 #include "ap/sta_info.h"
17 #include "ap/hostapd.h"
18 #include "ap/ieee802_11.h"
19 #include "config_ssid.h"
21 #include "wpa_supplicant_i.h"
30 static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
32 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
34 wpa_s->current_ssid = NULL;
35 os_free(wpa_s->mesh_rsn);
36 wpa_s->mesh_rsn = NULL;
37 /* TODO: leave mesh (stop beacon). This will happen on link down
38 * anyway, so it's not urgent */
42 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
43 struct hostapd_iface *ifmsh)
49 mesh_mpm_deinit(wpa_s, ifmsh);
50 if (ifmsh->mconf->ies) {
51 ifmsh->mconf->ies = NULL;
52 /* We cannot free this struct
53 * because wpa_authenticator on
54 * hostapd side is also using it
55 * for now just set to NULL and
56 * let hostapd code free it.
59 os_free(ifmsh->mconf);
63 /* take care of shared data */
64 hostapd_interface_deinit(ifmsh);
65 hostapd_interface_free(ifmsh);
69 static struct mesh_conf * mesh_config_create(struct wpa_ssid *ssid)
71 struct mesh_conf *conf;
73 conf = os_zalloc(sizeof(struct mesh_conf));
77 os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
78 conf->meshid_len = ssid->ssid_len;
80 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
81 conf->security |= MESH_CONF_SEC_AUTH |
84 conf->security |= MESH_CONF_SEC_NONE;
87 conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
88 conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
90 conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
91 conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
97 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
98 struct wpa_supplicant *wpa_s)
103 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
107 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
108 bss->conf->sae_groups = os_malloc(groups_size);
109 if (bss->conf->sae_groups)
110 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
115 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
116 struct wpa_ssid *ssid)
118 struct hostapd_iface *ifmsh;
119 struct hostapd_data *bss;
120 struct hostapd_config *conf;
121 struct mesh_conf *mconf;
122 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
123 static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
126 if (!wpa_s->conf->user_mpm) {
127 /* not much for us to do here */
128 wpa_msg(wpa_s, MSG_WARNING,
129 "user_mpm is not enabled in configuration");
133 wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
138 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
139 sizeof(struct hostapd_data *));
143 ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
147 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
148 bss->driver = wpa_s->driver;
149 bss->drv_priv = wpa_s->drv_priv;
151 bss->mesh_sta_free_cb = mesh_mpm_free_sta;
152 wpa_s->assoc_freq = ssid->frequency;
153 wpa_s->current_ssid = ssid;
155 /* setup an AP config for auth processing */
156 conf = hostapd_config_defaults();
160 bss->conf = *conf->bss;
161 bss->conf->start_disabled = 1;
162 bss->conf->mesh = MESH_ENABLED;
166 ifmsh->bss[0]->max_plinks = 99;
167 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
169 mconf = mesh_config_create(ssid);
172 ifmsh->mconf = mconf;
174 /* need conf->hw_mode for supported rates. */
175 if (ssid->frequency == 0) {
176 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
179 conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
182 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
183 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
189 * XXX: Hack! This is so an MPM which correctly sets the ERP mandatory
190 * rates as BSSBasicRateSet doesn't reject us. We could add a new
191 * hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but this is way easier. This
192 * also makes our BSSBasicRateSet advertised in Beacon frames match the
193 * one in peering frames, sigh.
195 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
196 conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
197 if (!conf->basic_rates)
199 os_memcpy(conf->basic_rates, basic_rates_erp,
200 sizeof(basic_rates_erp));
203 if (hostapd_setup_interface(ifmsh)) {
204 wpa_printf(MSG_ERROR,
205 "Failed to initialize hostapd interface for mesh");
209 if (wpa_drv_init_mesh(wpa_s)) {
210 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
214 if (mconf->security != MESH_CONF_SEC_NONE) {
215 if (ssid->passphrase == NULL) {
216 wpa_printf(MSG_ERROR,
217 "mesh: Passphrase for SAE not configured");
221 bss->conf->wpa = ssid->proto;
222 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
224 if (wpa_s->conf->sae_groups &&
225 wpa_s->conf->sae_groups[0] > 0) {
226 wpas_mesh_copy_groups(bss, wpa_s);
228 bss->conf->sae_groups =
229 os_malloc(sizeof(default_groups));
230 if (!bss->conf->sae_groups)
232 os_memcpy(bss->conf->sae_groups, default_groups,
233 sizeof(default_groups));
236 len = os_strlen(ssid->passphrase);
237 bss->conf->ssid.wpa_passphrase =
238 dup_binstr(ssid->passphrase, len);
240 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
241 if (!wpa_s->mesh_rsn)
245 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
249 wpa_supplicant_mesh_deinit(wpa_s);
254 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
255 const u8 *ies, size_t ie_len)
257 struct ieee802_11_elems elems;
259 wpa_msg(wpa_s, MSG_INFO,
260 "new peer notification for " MACSTR, MAC2STR(addr));
262 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
263 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
267 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
271 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
272 struct wpabuf **extra_ie)
274 /* EID + 0-length (wildcard) mesh-id */
277 if (wpabuf_resize(extra_ie, ielen) == 0) {
278 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
279 wpabuf_put_u8(*extra_ie, 0);
284 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
285 struct wpa_ssid *ssid)
287 struct wpa_driver_mesh_join_params params;
290 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
295 wpa_supplicant_mesh_deinit(wpa_s);
297 os_memset(¶ms, 0, sizeof(params));
298 params.meshid = ssid->ssid;
299 params.meshid_len = ssid->ssid_len;
300 params.freq = ssid->frequency;
301 #ifdef CONFIG_IEEE80211N
302 params.ht_mode = ssid->mesh_ht_mode;
303 #endif /* CONFIG_IEEE80211N */
305 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
306 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
307 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
308 wpa_s->conf->user_mpm = 1;
311 if (wpa_s->conf->user_mpm) {
312 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
313 params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
315 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
316 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
319 if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
320 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
326 params.ies = wpa_s->ifmsh->mconf->ies;
327 params.ie_len = wpa_s->ifmsh->mconf->ie_len;
328 params.basic_rates = wpa_s->ifmsh->basic_rates;
331 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
332 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
333 ret = wpa_drv_join_mesh(wpa_s, ¶ms);
335 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
337 /* hostapd sets the interface down until we associate */
338 wpa_drv_set_operstate(wpa_s, 1);
345 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
349 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
351 ret = wpa_drv_leave_mesh(wpa_s);
353 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
355 wpa_drv_set_operstate(wpa_s, 1);
357 wpa_supplicant_mesh_deinit(wpa_s);