[thirdparty/hostap.git] / wpa_supplicant / mesh.c

/*
 * WPA Supplicant - Basic mesh mode routines
 * Copyright (c) 2013-2014, cozybit, Inc.  All rights reserved.
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "utils/includes.h"

#include "utils/common.h"
#include "utils/eloop.h"
#include "utils/uuid.h"
#include "common/ieee802_11_defs.h"
#include "common/wpa_ctrl.h"
#include "ap/sta_info.h"
#include "ap/hostapd.h"
#include "ap/ieee802_11.h"
#include "config_ssid.h"
#include "config.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "notify.h"
#include "ap.h"
#include "mesh_mpm.h"
#include "mesh_rsn.h"
#include "mesh.h"


static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
{
	wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
	wpa_s->ifmsh = NULL;
	wpa_s->current_ssid = NULL;
	os_free(wpa_s->mesh_rsn);
	wpa_s->mesh_rsn = NULL;
	/* TODO: leave mesh (stop beacon). This will happen on link down
	 * anyway, so it's not urgent */
}


void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
				      struct hostapd_iface *ifmsh)
{
	if (!ifmsh)
		return;

	if (ifmsh->mconf) {
		mesh_mpm_deinit(wpa_s, ifmsh);
		if (ifmsh->mconf->ies) {
			ifmsh->mconf->ies = NULL;
			/* We cannot free this struct
			 * because wpa_authenticator on
			 * hostapd side is also using it
			 * for now just set to NULL and
			 * let hostapd code free it.
			 */
		}
		os_free(ifmsh->mconf);
		ifmsh->mconf = NULL;
	}

	/* take care of shared data */
	hostapd_interface_deinit(ifmsh);
	hostapd_interface_free(ifmsh);
}


static struct mesh_conf * mesh_config_create(struct wpa_ssid *ssid)
{
	struct mesh_conf *conf;

	conf = os_zalloc(sizeof(struct mesh_conf));
	if (!conf)
		return NULL;

	os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
	conf->meshid_len = ssid->ssid_len;

	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
		conf->security |= MESH_CONF_SEC_AUTH |
			MESH_CONF_SEC_AMPE;
	else
		conf->security |= MESH_CONF_SEC_NONE;

	/* defaults */
	conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
	conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
	conf->mesh_cc_id = 0;
	conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
	conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
	conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
	conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
	conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
	conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;

	return conf;
}


static void wpas_mesh_copy_groups(struct hostapd_data *bss,
				  struct wpa_supplicant *wpa_s)
{
	int num_groups;
	size_t groups_size;

	for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
	     num_groups++)
		;

	groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
	bss->conf->sae_groups = os_malloc(groups_size);
	if (bss->conf->sae_groups)
		os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
			  groups_size);
}


static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
				    struct wpa_ssid *ssid)
{
	struct hostapd_iface *ifmsh;
	struct hostapd_data *bss;
	struct hostapd_config *conf;
	struct mesh_conf *mconf;
	int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
	static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
	size_t len;
	int rate_len;

	if (!wpa_s->conf->user_mpm) {
		/* not much for us to do here */
		wpa_msg(wpa_s, MSG_WARNING,
			"user_mpm is not enabled in configuration");
		return 0;
	}

	wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
	if (!ifmsh)
		return -ENOMEM;

	ifmsh->drv_flags = wpa_s->drv_flags;
	ifmsh->num_bss = 1;
	ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
			       sizeof(struct hostapd_data *));
	if (!ifmsh->bss)
		goto out_free;

	ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
	if (!bss)
		goto out_free;

	os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
	bss->driver = wpa_s->driver;
	bss->drv_priv = wpa_s->drv_priv;
	bss->iface = ifmsh;
	bss->mesh_sta_free_cb = mesh_mpm_free_sta;
	wpa_s->assoc_freq = ssid->frequency;
	wpa_s->current_ssid = ssid;

	/* setup an AP config for auth processing */
	conf = hostapd_config_defaults();
	if (!conf)
		goto out_free;

	bss->conf = *conf->bss;
	bss->conf->start_disabled = 1;
	bss->conf->mesh = MESH_ENABLED;
	bss->iconf = conf;
	ifmsh->conf = conf;

	ifmsh->bss[0]->max_plinks = 99;
	os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));

	mconf = mesh_config_create(ssid);
	if (!mconf)
		goto out_free;
	ifmsh->mconf = mconf;

	/* need conf->hw_mode for supported rates. */
	if (ssid->frequency == 0) {
		conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
		conf->channel = 1;
	} else {
		conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
						       &conf->channel);
	}
	if (conf->hw_mode == NUM_HOSTAPD_MODES) {
		wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
			   ssid->frequency);
		goto out_free;
	}

	if (ssid->mesh_basic_rates == NULL) {
		/*
		 * XXX: Hack! This is so an MPM which correctly sets the ERP
		 * mandatory rates as BSSBasicRateSet doesn't reject us. We
		 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
		 * this is way easier. This also makes our BSSBasicRateSet
		 * advertised in beacons match the one in peering frames, sigh.
		 */
		if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
			conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
			if (!conf->basic_rates)
				goto out_free;
			os_memcpy(conf->basic_rates, basic_rates_erp,
				  sizeof(basic_rates_erp));
		}
	} else {
		rate_len = 0;
		while (1) {
			if (ssid->mesh_basic_rates[rate_len] < 1)
				break;
			rate_len++;
		}
		conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
		if (conf->basic_rates == NULL)
			goto out_free;
		os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
			  rate_len * sizeof(int));
		conf->basic_rates[rate_len] = -1;
	}

	if (hostapd_setup_interface(ifmsh)) {
		wpa_printf(MSG_ERROR,
			   "Failed to initialize hostapd interface for mesh");
		return -1;
	}

	if (wpa_drv_init_mesh(wpa_s)) {
		wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
		return -1;
	}

	if (mconf->security != MESH_CONF_SEC_NONE) {
		if (ssid->passphrase == NULL) {
			wpa_printf(MSG_ERROR,
				   "mesh: Passphrase for SAE not configured");
			goto out_free;
		}

		bss->conf->wpa = ssid->proto;
		bss->conf->wpa_key_mgmt = ssid->key_mgmt;

		if (wpa_s->conf->sae_groups &&
		    wpa_s->conf->sae_groups[0] > 0) {
			wpas_mesh_copy_groups(bss, wpa_s);
		} else {
			bss->conf->sae_groups =
				os_malloc(sizeof(default_groups));
			if (!bss->conf->sae_groups)
				goto out_free;
			os_memcpy(bss->conf->sae_groups, default_groups,
				  sizeof(default_groups));
		}

		len = os_strlen(ssid->passphrase);
		bss->conf->ssid.wpa_passphrase =
			dup_binstr(ssid->passphrase, len);

		wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
		if (!wpa_s->mesh_rsn)
			goto out_free;
	}

	wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);

	return 0;
out_free:
	wpa_supplicant_mesh_deinit(wpa_s);
	return -ENOMEM;
}


void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
			  const u8 *ies, size_t ie_len)
{
	struct ieee802_11_elems elems;

	wpa_msg(wpa_s, MSG_INFO,
		"new peer notification for " MACSTR, MAC2STR(addr));

	if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
		wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
			MAC2STR(addr));
		return;
	}
	wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
}


void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
				     struct wpabuf **extra_ie)
{
	/* EID + 0-length (wildcard) mesh-id */
	size_t ielen = 2;

	if (wpabuf_resize(extra_ie, ielen) == 0) {
		wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
		wpabuf_put_u8(*extra_ie, 0);
	}
}


int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
			     struct wpa_ssid *ssid)
{
	struct wpa_driver_mesh_join_params params;
	int ret = 0;

	if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
		ret = -ENOENT;
		goto out;
	}

	wpa_supplicant_mesh_deinit(wpa_s);

	os_memset(&params, 0, sizeof(params));
	params.meshid = ssid->ssid;
	params.meshid_len = ssid->ssid_len;
	params.freq = ssid->frequency;
	if (ssid->beacon_int > 0)
		params.beacon_int = ssid->beacon_int;
	else if (wpa_s->conf->beacon_int > 0)
		params.beacon_int = wpa_s->conf->beacon_int;
#ifdef CONFIG_IEEE80211N
	params.ht_mode = ssid->mesh_ht_mode;
#endif /* CONFIG_IEEE80211N */

	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
		params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
		params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
		wpa_s->conf->user_mpm = 1;
	}

	if (wpa_s->conf->user_mpm) {
		params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
		params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
	} else {
		params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
		params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
	}

	if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
		wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
		ret = -1;
		goto out;
	}

	if (wpa_s->ifmsh) {
		params.ies = wpa_s->ifmsh->mconf->ies;
		params.ie_len = wpa_s->ifmsh->mconf->ie_len;
		params.basic_rates = wpa_s->ifmsh->basic_rates;
	}

	wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
		wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
	ret = wpa_drv_join_mesh(wpa_s, &params);
	if (ret)
		wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);

	/* hostapd sets the interface down until we associate */
	wpa_drv_set_operstate(wpa_s, 1);

out:
	return ret;
}


int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
{
	int ret = 0;

	wpa_msg(wpa_s, MSG_INFO, "leaving mesh");

	/* Need to send peering close messages first */
	wpa_supplicant_mesh_deinit(wpa_s);

	ret = wpa_drv_leave_mesh(wpa_s);
	if (ret)
		wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);

	wpa_drv_set_operstate(wpa_s, 1);

	return ret;
}


static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
{
	struct ieee802_11_elems elems;
	char *mesh_id, *pos = buf;
	u8 *bss_basic_rate_set;
	int bss_basic_rate_set_len, ret, i;

	if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
		return -1;

	if (elems.mesh_id_len < 1)
		return 0;

	mesh_id = os_malloc(elems.mesh_id_len + 1);
	if (mesh_id == NULL)
		return -1;

	os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
	mesh_id[elems.mesh_id_len] = '\0';
	ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
	os_free(mesh_id);
	if (os_snprintf_error(end - pos, ret))
		return pos - buf;
	pos += ret;

	if (elems.mesh_config_len > 6) {
		ret = os_snprintf(pos, end - pos,
				  "active_path_selection_protocol_id=0x%02x\n"
				  "active_path_selection_metric_id=0x%02x\n"
				  "congestion_control_mode_id=0x%02x\n"
				  "synchronization_method_id=0x%02x\n"
				  "authentication_protocol_id=0x%02x\n"
				  "mesh_formation_info=0x%02x\n"
				  "mesh_capability=0x%02x\n",
				  elems.mesh_config[0], elems.mesh_config[1],
				  elems.mesh_config[2], elems.mesh_config[3],
				  elems.mesh_config[4], elems.mesh_config[5],
				  elems.mesh_config[6]);
		if (os_snprintf_error(end - pos, ret))
			return pos - buf;
		pos += ret;
	}

	bss_basic_rate_set = os_malloc(elems.supp_rates_len +
		elems.ext_supp_rates_len);
	if (bss_basic_rate_set == NULL)
		return -1;

	bss_basic_rate_set_len = 0;
	for (i = 0; i < elems.supp_rates_len; i++) {
		if (elems.supp_rates[i] & 0x80) {
			bss_basic_rate_set[bss_basic_rate_set_len++] =
				(elems.supp_rates[i] & 0x7f) * 5;
		}
	}
	for (i = 0; i < elems.ext_supp_rates_len; i++) {
		if (elems.ext_supp_rates[i] & 0x80) {
			bss_basic_rate_set[bss_basic_rate_set_len++] =
				(elems.ext_supp_rates[i] & 0x7f) * 5;
		}
	}
	if (bss_basic_rate_set_len > 0) {
		ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
				  bss_basic_rate_set[0]);
		if (os_snprintf_error(end - pos, ret))
			return pos - buf;
		pos += ret;

		for (i = 1; i < bss_basic_rate_set_len; i++) {
			ret = os_snprintf(pos, end - pos, " %d",
					  bss_basic_rate_set[i]);
			if (os_snprintf_error(end - pos, ret))
				return pos - buf;
			pos += ret;
		}

		ret = os_snprintf(pos, end - pos, "\n");
		if (os_snprintf_error(end - pos, ret))
			return pos - buf;
		pos += ret;
	}
	os_free(bss_basic_rate_set);

	return pos - buf;
}


int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
			       char *end)
{
	return mesh_attr_text(ies, ies_len, buf, end);
}


static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
				size_t len)
{
	char *ifname_ptr = wpa_s->ifname;
	int res;

	res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
			  wpa_s->mesh_if_idx);
	if (os_snprintf_error(len, res) ||
	    (os_strlen(ifname) >= IFNAMSIZ &&
	     os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
		/* Try to avoid going over the IFNAMSIZ length limit */
		res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
		if (os_snprintf_error(len, res))
			return -1;
	}
	wpa_s->mesh_if_idx++;
	return 0;
}


int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
			    size_t len)
{
	struct wpa_interface iface;
	struct wpa_supplicant *mesh_wpa_s;
	u8 addr[ETH_ALEN];

	if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
		return -1;

	if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
			   NULL) < 0) {
		wpa_printf(MSG_ERROR,
			   "mesh: Failed to create new mesh interface");
		return -1;
	}
	wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
		   MACSTR, ifname, MAC2STR(addr));

	os_memset(&iface, 0, sizeof(iface));
	iface.ifname = ifname;
	iface.driver = wpa_s->driver->name;
	iface.driver_param = wpa_s->conf->driver_param;
	iface.ctrl_interface = wpa_s->conf->ctrl_interface;

	mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
	if (!mesh_wpa_s) {
		wpa_printf(MSG_ERROR,
			   "mesh: Failed to create new wpa_supplicant interface");
		wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
		return -1;
	}
	mesh_wpa_s->mesh_if_created = 1;
	mesh_wpa_s->parent = wpa_s;
	return 0;
}
Commit	Line	Data
8319e312 TP	1	/*
	2	* WPA Supplicant - Basic mesh mode routines
	3	* Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
	4	*
	5	* This software may be distributed under the terms of the BSD license.
	6	* See README for more details.
	7	*/
	8
	9	#include "utils/includes.h"
	10
	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"
	20	#include "config.h"
	21	#include "wpa_supplicant_i.h"
	22	#include "driver_i.h"
	23	#include "notify.h"
5cfb672d	24	#include "ap.h"
5f92659d	25	#include "mesh_mpm.h"
0f950df0	26	#include "mesh_rsn.h"
8319e312 TP	27	#include "mesh.h"
	28
	29
	30	static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
	31	{
	32	wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
	33	wpa_s->ifmsh = NULL;
	34	wpa_s->current_ssid = NULL;
0f950df0 TP	35	os_free(wpa_s->mesh_rsn);
0f950df0 TP	36	wpa_s->mesh_rsn = NULL;
8319e312 TP	37	/* TODO: leave mesh (stop beacon). This will happen on link down
	38	* anyway, so it's not urgent */
	39	}
	40
	41
	42	void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
	43	struct hostapd_iface *ifmsh)
	44	{
	45	if (!ifmsh)
	46	return;
	47
	48	if (ifmsh->mconf) {
5f92659d	49	mesh_mpm_deinit(wpa_s, ifmsh);
8319e312 TP	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.
	57	*/
	58	}
	59	os_free(ifmsh->mconf);
	60	ifmsh->mconf = NULL;
	61	}
	62
	63	/* take care of shared data */
	64	hostapd_interface_deinit(ifmsh);
	65	hostapd_interface_free(ifmsh);
	66	}
	67
	68
	69	static struct mesh_conf * mesh_config_create(struct wpa_ssid *ssid)
	70	{
	71	struct mesh_conf *conf;
	72
	73	conf = os_zalloc(sizeof(struct mesh_conf));
	74	if (!conf)
	75	return NULL;
	76
	77	os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
	78	conf->meshid_len = ssid->ssid_len;
	79
	80	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
	81	conf->security \|= MESH_CONF_SEC_AUTH \|
	82	MESH_CONF_SEC_AMPE;
	83	else
	84	conf->security \|= MESH_CONF_SEC_NONE;
	85
	86	/* defaults */
	87	conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
	88	conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
	89	conf->mesh_cc_id = 0;
	90	conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
	91	conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
e6096799 MH	92	conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
	93	conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
	94	conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
	95	conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
8319e312 TP	96
	97	return conf;
	98	}
	99
	100
	101	static void wpas_mesh_copy_groups(struct hostapd_data *bss,
	102	struct wpa_supplicant *wpa_s)
	103	{
	104	int num_groups;
	105	size_t groups_size;
	106
	107	for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
	108	num_groups++)
	109	;
	110
	111	groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
	112	bss->conf->sae_groups = os_malloc(groups_size);
	113	if (bss->conf->sae_groups)
	114	os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
	115	groups_size);
	116	}
	117
	118
	119	static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
	120	struct wpa_ssid *ssid)
	121	{
	122	struct hostapd_iface *ifmsh;
	123	struct hostapd_data *bss;
	124	struct hostapd_config *conf;
	125	struct mesh_conf *mconf;
	126	int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
	127	static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
	128	size_t len;
2b2bb5a8	129	int rate_len;
8319e312	130
5f92659d BC	131	if (!wpa_s->conf->user_mpm) {
	132	/* not much for us to do here */
	133	wpa_msg(wpa_s, MSG_WARNING,
	134	"user_mpm is not enabled in configuration");
	135	return 0;
	136	}
	137
8319e312 TP	138	wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
	139	if (!ifmsh)
	140	return -ENOMEM;
	141
edfefaed	142	ifmsh->drv_flags = wpa_s->drv_flags;
8319e312 TP	143	ifmsh->num_bss = 1;
	144	ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
	145	sizeof(struct hostapd_data *));
	146	if (!ifmsh->bss)
	147	goto out_free;
	148
	149	ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
	150	if (!bss)
	151	goto out_free;
	152
	153	os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
	154	bss->driver = wpa_s->driver;
	155	bss->drv_priv = wpa_s->drv_priv;
	156	bss->iface = ifmsh;
c596f3f0	157	bss->mesh_sta_free_cb = mesh_mpm_free_sta;
8319e312 TP	158	wpa_s->assoc_freq = ssid->frequency;
	159	wpa_s->current_ssid = ssid;
	160
	161	/* setup an AP config for auth processing */
	162	conf = hostapd_config_defaults();
	163	if (!conf)
	164	goto out_free;
	165
	166	bss->conf = *conf->bss;
	167	bss->conf->start_disabled = 1;
	168	bss->conf->mesh = MESH_ENABLED;
	169	bss->iconf = conf;
	170	ifmsh->conf = conf;
	171
5f92659d	172	ifmsh->bss[0]->max_plinks = 99;
8319e312 TP	173	os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
	174
	175	mconf = mesh_config_create(ssid);
	176	if (!mconf)
	177	goto out_free;
	178	ifmsh->mconf = mconf;
	179
	180	/* need conf->hw_mode for supported rates. */
	181	if (ssid->frequency == 0) {
	182	conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
	183	conf->channel = 1;
	184	} else {
	185	conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
	186	&conf->channel);
	187	}
	188	if (conf->hw_mode == NUM_HOSTAPD_MODES) {
	189	wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
	190	ssid->frequency);
	191	goto out_free;
	192	}
	193
2b2bb5a8 MH	194	if (ssid->mesh_basic_rates == NULL) {
	195	/*
	196	* XXX: Hack! This is so an MPM which correctly sets the ERP
	197	* mandatory rates as BSSBasicRateSet doesn't reject us. We
	198	* could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
	199	* this is way easier. This also makes our BSSBasicRateSet
	200	* advertised in beacons match the one in peering frames, sigh.
	201	*/
	202	if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
	203	conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
	204	if (!conf->basic_rates)
	205	goto out_free;
	206	os_memcpy(conf->basic_rates, basic_rates_erp,
	207	sizeof(basic_rates_erp));
	208	}
	209	} else {
	210	rate_len = 0;
	211	while (1) {
	212	if (ssid->mesh_basic_rates[rate_len] < 1)
	213	break;
	214	rate_len++;
	215	}
	216	conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
	217	if (conf->basic_rates == NULL)
8319e312	218	goto out_free;
2b2bb5a8 MH	219	os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
	220	rate_len * sizeof(int));
	221	conf->basic_rates[rate_len] = -1;
8319e312 TP	222	}
	223
	224	if (hostapd_setup_interface(ifmsh)) {
	225	wpa_printf(MSG_ERROR,
	226	"Failed to initialize hostapd interface for mesh");
	227	return -1;
	228	}
	229
	230	if (wpa_drv_init_mesh(wpa_s)) {
	231	wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
	232	return -1;
	233	}
	234
	235	if (mconf->security != MESH_CONF_SEC_NONE) {
	236	if (ssid->passphrase == NULL) {
	237	wpa_printf(MSG_ERROR,
	238	"mesh: Passphrase for SAE not configured");
	239	goto out_free;
	240	}
	241
	242	bss->conf->wpa = ssid->proto;
	243	bss->conf->wpa_key_mgmt = ssid->key_mgmt;
	244
	245	if (wpa_s->conf->sae_groups &&
	246	wpa_s->conf->sae_groups[0] > 0) {
	247	wpas_mesh_copy_groups(bss, wpa_s);
	248	} else {
	249	bss->conf->sae_groups =
	250	os_malloc(sizeof(default_groups));
	251	if (!bss->conf->sae_groups)
	252	goto out_free;
	253	os_memcpy(bss->conf->sae_groups, default_groups,
	254	sizeof(default_groups));
	255	}
	256
	257	len = os_strlen(ssid->passphrase);
	258	bss->conf->ssid.wpa_passphrase =
	259	dup_binstr(ssid->passphrase, len);
0f950df0 TP	260
	261	wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
	262	if (!wpa_s->mesh_rsn)
	263	goto out_free;
8319e312 TP	264	}
8319e312 TP	265
5cfb672d JM	266	wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
5cfb672d JM	267
8319e312 TP	268	return 0;
	269	out_free:
	270	wpa_supplicant_mesh_deinit(wpa_s);
	271	return -ENOMEM;
	272	}
	273
	274
	275	void wpa_mesh_notify_peer(struct wpa_supplicant wpa_s, const u8 addr,
	276	const u8 *ies, size_t ie_len)
	277	{
	278	struct ieee802_11_elems elems;
	279
	280	wpa_msg(wpa_s, MSG_INFO,
	281	"new peer notification for " MACSTR, MAC2STR(addr));
	282
	283	if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
	284	wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
	285	MAC2STR(addr));
5f92659d	286	return;
8319e312	287	}
5f92659d	288	wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
8319e312 TP	289	}
	290
	291
fbca4c89 JA	292	void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
	293	struct wpabuf **extra_ie)
	294	{
	295	/* EID + 0-length (wildcard) mesh-id */
	296	size_t ielen = 2;
	297
	298	if (wpabuf_resize(extra_ie, ielen) == 0) {
	299	wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
	300	wpabuf_put_u8(*extra_ie, 0);
	301	}
	302	}
	303
	304
8319e312 TP	305	int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
	306	struct wpa_ssid *ssid)
	307	{
	308	struct wpa_driver_mesh_join_params params;
	309	int ret = 0;
	310
	311	if (!ssid \|\| !ssid->ssid \|\| !ssid->ssid_len \|\| !ssid->frequency) {
	312	ret = -ENOENT;
	313	goto out;
	314	}
	315
	316	wpa_supplicant_mesh_deinit(wpa_s);
	317
	318	os_memset(&params, 0, sizeof(params));
	319	params.meshid = ssid->ssid;
	320	params.meshid_len = ssid->ssid_len;
	321	params.freq = ssid->frequency;
9c58c5f7 MH	322	if (ssid->beacon_int > 0)
	323	params.beacon_int = ssid->beacon_int;
	324	else if (wpa_s->conf->beacon_int > 0)
	325	params.beacon_int = wpa_s->conf->beacon_int;
5cfb672d JM	326	#ifdef CONFIG_IEEE80211N
	327	params.ht_mode = ssid->mesh_ht_mode;
	328	#endif /* CONFIG_IEEE80211N */
8319e312 TP	329
	330	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
	331	params.flags \|= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
	332	params.flags \|= WPA_DRIVER_MESH_FLAG_AMPE;
5f92659d	333	wpa_s->conf->user_mpm = 1;
8319e312 TP	334	}
8319e312 TP	335
5f92659d BC	336	if (wpa_s->conf->user_mpm) {
	337	params.flags \|= WPA_DRIVER_MESH_FLAG_USER_MPM;
	338	params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
	339	} else {
	340	params.flags \|= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
	341	params.conf.flags \|= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
	342	}
8319e312 TP	343
	344	if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
	345	wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
	346	ret = -1;
	347	goto out;
	348	}
	349
	350	if (wpa_s->ifmsh) {
	351	params.ies = wpa_s->ifmsh->mconf->ies;
	352	params.ie_len = wpa_s->ifmsh->mconf->ie_len;
	353	params.basic_rates = wpa_s->ifmsh->basic_rates;
	354	}
	355
	356	wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
	357	wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
	358	ret = wpa_drv_join_mesh(wpa_s, &params);
	359	if (ret)
	360	wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
	361
	362	/* hostapd sets the interface down until we associate */
	363	wpa_drv_set_operstate(wpa_s, 1);
	364
	365	out:
	366	return ret;
	367	}
	368
	369
	370	int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
	371	{
	372	int ret = 0;
	373
	374	wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
	375
4e0990dc JM	376	/* Need to send peering close messages first */
	377	wpa_supplicant_mesh_deinit(wpa_s);
	378
8319e312 TP	379	ret = wpa_drv_leave_mesh(wpa_s);
	380	if (ret)
	381	wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
	382
	383	wpa_drv_set_operstate(wpa_s, 1);
	384
8319e312 TP	385	return ret;
8319e312 TP	386	}
79070906 MH	387
	388
	389	static int mesh_attr_text(const u8 ies, size_t ies_len, char buf, char *end)
	390	{
	391	struct ieee802_11_elems elems;
	392	char mesh_id, pos = buf;
	393	u8 *bss_basic_rate_set;
	394	int bss_basic_rate_set_len, ret, i;
	395
	396	if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
	397	return -1;
	398
	399	if (elems.mesh_id_len < 1)
	400	return 0;
	401
	402	mesh_id = os_malloc(elems.mesh_id_len + 1);
	403	if (mesh_id == NULL)
	404	return -1;
	405
	406	os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
	407	mesh_id[elems.mesh_id_len] = '\0';
	408	ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
	409	os_free(mesh_id);
d85e1fc8	410	if (os_snprintf_error(end - pos, ret))
79070906 MH	411	return pos - buf;
	412	pos += ret;
	413
	414	if (elems.mesh_config_len > 6) {
	415	ret = os_snprintf(pos, end - pos,
	416	"active_path_selection_protocol_id=0x%02x\n"
	417	"active_path_selection_metric_id=0x%02x\n"
	418	"congestion_control_mode_id=0x%02x\n"
	419	"synchronization_method_id=0x%02x\n"
	420	"authentication_protocol_id=0x%02x\n"
	421	"mesh_formation_info=0x%02x\n"
	422	"mesh_capability=0x%02x\n",
	423	elems.mesh_config[0], elems.mesh_config[1],
	424	elems.mesh_config[2], elems.mesh_config[3],
	425	elems.mesh_config[4], elems.mesh_config[5],
	426	elems.mesh_config[6]);
d85e1fc8	427	if (os_snprintf_error(end - pos, ret))
79070906 MH	428	return pos - buf;
	429	pos += ret;
	430	}
	431
	432	bss_basic_rate_set = os_malloc(elems.supp_rates_len +
	433	elems.ext_supp_rates_len);
	434	if (bss_basic_rate_set == NULL)
	435	return -1;
	436
	437	bss_basic_rate_set_len = 0;
	438	for (i = 0; i < elems.supp_rates_len; i++) {
	439	if (elems.supp_rates[i] & 0x80) {
	440	bss_basic_rate_set[bss_basic_rate_set_len++] =
	441	(elems.supp_rates[i] & 0x7f) * 5;
	442	}
	443	}
	444	for (i = 0; i < elems.ext_supp_rates_len; i++) {
	445	if (elems.ext_supp_rates[i] & 0x80) {
	446	bss_basic_rate_set[bss_basic_rate_set_len++] =
	447	(elems.ext_supp_rates[i] & 0x7f) * 5;
	448	}
	449	}
	450	if (bss_basic_rate_set_len > 0) {
	451	ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
	452	bss_basic_rate_set[0]);
d85e1fc8	453	if (os_snprintf_error(end - pos, ret))
79070906 MH	454	return pos - buf;
	455	pos += ret;
	456
	457	for (i = 1; i < bss_basic_rate_set_len; i++) {
	458	ret = os_snprintf(pos, end - pos, " %d",
	459	bss_basic_rate_set[i]);
d85e1fc8	460	if (os_snprintf_error(end - pos, ret))
79070906 MH	461	return pos - buf;
	462	pos += ret;
	463	}
	464
	465	ret = os_snprintf(pos, end - pos, "\n");
d85e1fc8	466	if (os_snprintf_error(end - pos, ret))
79070906 MH	467	return pos - buf;
	468	pos += ret;
	469	}
	470	os_free(bss_basic_rate_set);
	471
	472	return pos - buf;
	473	}
	474
	475
	476	int wpas_mesh_scan_result_text(const u8 ies, size_t ies_len, char buf,
	477	char *end)
	478	{
	479	return mesh_attr_text(ies, ies_len, buf, end);
	480	}
5b78493f MH	481
	482
	483	static int wpas_mesh_get_ifname(struct wpa_supplicant wpa_s, char ifname,
	484	size_t len)
	485	{
	486	char *ifname_ptr = wpa_s->ifname;
	487	int res;
	488
	489	res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
	490	wpa_s->mesh_if_idx);
	491	if (os_snprintf_error(len, res) \|\|
	492	(os_strlen(ifname) >= IFNAMSIZ &&
	493	os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
	494	/* Try to avoid going over the IFNAMSIZ length limit */
	495	res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
	496	if (os_snprintf_error(len, res))
	497	return -1;
	498	}
	499	wpa_s->mesh_if_idx++;
	500	return 0;
	501	}
	502
	503
	504	int wpas_mesh_add_interface(struct wpa_supplicant wpa_s, char ifname,
	505	size_t len)
	506	{
	507	struct wpa_interface iface;
	508	struct wpa_supplicant *mesh_wpa_s;
	509	u8 addr[ETH_ALEN];
	510
	511	if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
	512	return -1;
	513
	514	if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
	515	NULL) < 0) {
	516	wpa_printf(MSG_ERROR,
	517	"mesh: Failed to create new mesh interface");
	518	return -1;
	519	}
	520	wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
	521	MACSTR, ifname, MAC2STR(addr));
	522
	523	os_memset(&iface, 0, sizeof(iface));
	524	iface.ifname = ifname;
	525	iface.driver = wpa_s->driver->name;
	526	iface.driver_param = wpa_s->conf->driver_param;
	527	iface.ctrl_interface = wpa_s->conf->ctrl_interface;
	528
	529	mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
	530	if (!mesh_wpa_s) {
	531	wpa_printf(MSG_ERROR,
	532	"mesh: Failed to create new wpa_supplicant interface");
	533	wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
	534	return -1;
	535	}
	536	mesh_wpa_s->mesh_if_created = 1;
	537	mesh_wpa_s->parent = wpa_s;
	538	return 0;
	539	}