[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->rsn_ie) {
			ifmsh->mconf->rsn_ie = 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->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
	bss->iconf = conf;
	ifmsh->conf = conf;

	ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
	ifmsh->bss[0]->dot11RSNASAERetransPeriod =
		wpa_s->conf->dot11RSNASAERetransPeriod;
	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);

	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
		wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
		wpa_s->group_cipher = WPA_CIPHER_CCMP;
		wpa_s->mgmt_group_cipher = 0;
	} else {
		wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
		wpa_s->group_cipher = WPA_CIPHER_NONE;
		wpa_s->mgmt_group_cipher = 0;
	}

	os_memset(&params, 0, sizeof(params));
	params.meshid = ssid->ssid;
	params.meshid_len = ssid->ssid_len;
	ibss_mesh_setup_freq(wpa_s, ssid, &params.freq);
	wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
	wpa_s->mesh_vht_enabled = !!params.freq.vht_enabled;
	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;
	params.max_peer_links = wpa_s->conf->max_peer_links;

	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;
	}
	params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;

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

	if (wpa_s->ifmsh) {
		params.ies = wpa_s->ifmsh->mconf->rsn_ie;
		params.ie_len = wpa_s->ifmsh->mconf->rsn_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))
			goto fail;
		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))
				goto fail;
			pos += ret;
		}

		ret = os_snprintf(pos, end - pos, "\n");
		if (os_snprintf_error(end - pos, ret))
			goto fail;
		pos += ret;
	}
fail:
	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, wpa_s);
	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;
	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);
8a51dcbc MH	50	if (ifmsh->mconf->rsn_ie) {
8a51dcbc MH	51	ifmsh->mconf->rsn_ie = NULL;
8319e312 TP	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;
5a2a6de6	169	bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
8319e312 TP	170	bss->iconf = conf;
	171	ifmsh->conf = conf;
	172
4b409368	173	ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
ecd40fef MH	174	ifmsh->bss[0]->dot11RSNASAERetransPeriod =
ecd40fef MH	175	wpa_s->conf->dot11RSNASAERetransPeriod;
8319e312 TP	176	os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
	177
	178	mconf = mesh_config_create(ssid);
	179	if (!mconf)
	180	goto out_free;
	181	ifmsh->mconf = mconf;
	182
	183	/* need conf->hw_mode for supported rates. */
	184	if (ssid->frequency == 0) {
	185	conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
	186	conf->channel = 1;
	187	} else {
	188	conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
	189	&conf->channel);
	190	}
	191	if (conf->hw_mode == NUM_HOSTAPD_MODES) {
	192	wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
	193	ssid->frequency);
	194	goto out_free;
	195	}
	196
2b2bb5a8 MH	197	if (ssid->mesh_basic_rates == NULL) {
	198	/*
	199	* XXX: Hack! This is so an MPM which correctly sets the ERP
	200	* mandatory rates as BSSBasicRateSet doesn't reject us. We
	201	* could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
	202	* this is way easier. This also makes our BSSBasicRateSet
	203	* advertised in beacons match the one in peering frames, sigh.
	204	*/
	205	if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
	206	conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
	207	if (!conf->basic_rates)
	208	goto out_free;
	209	os_memcpy(conf->basic_rates, basic_rates_erp,
	210	sizeof(basic_rates_erp));
	211	}
	212	} else {
	213	rate_len = 0;
	214	while (1) {
	215	if (ssid->mesh_basic_rates[rate_len] < 1)
	216	break;
	217	rate_len++;
	218	}
	219	conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
	220	if (conf->basic_rates == NULL)
8319e312	221	goto out_free;
2b2bb5a8 MH	222	os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
	223	rate_len * sizeof(int));
	224	conf->basic_rates[rate_len] = -1;
8319e312 TP	225	}
	226
	227	if (hostapd_setup_interface(ifmsh)) {
	228	wpa_printf(MSG_ERROR,
	229	"Failed to initialize hostapd interface for mesh");
	230	return -1;
	231	}
	232
	233	if (wpa_drv_init_mesh(wpa_s)) {
	234	wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
	235	return -1;
	236	}
	237
	238	if (mconf->security != MESH_CONF_SEC_NONE) {
	239	if (ssid->passphrase == NULL) {
	240	wpa_printf(MSG_ERROR,
	241	"mesh: Passphrase for SAE not configured");
	242	goto out_free;
	243	}
	244
	245	bss->conf->wpa = ssid->proto;
	246	bss->conf->wpa_key_mgmt = ssid->key_mgmt;
	247
	248	if (wpa_s->conf->sae_groups &&
	249	wpa_s->conf->sae_groups[0] > 0) {
	250	wpas_mesh_copy_groups(bss, wpa_s);
	251	} else {
	252	bss->conf->sae_groups =
	253	os_malloc(sizeof(default_groups));
	254	if (!bss->conf->sae_groups)
	255	goto out_free;
	256	os_memcpy(bss->conf->sae_groups, default_groups,
	257	sizeof(default_groups));
	258	}
	259
	260	len = os_strlen(ssid->passphrase);
	261	bss->conf->ssid.wpa_passphrase =
	262	dup_binstr(ssid->passphrase, len);
0f950df0 TP	263
	264	wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
	265	if (!wpa_s->mesh_rsn)
	266	goto out_free;
8319e312 TP	267	}
8319e312 TP	268
5cfb672d JM	269	wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
5cfb672d JM	270
8319e312 TP	271	return 0;
	272	out_free:
	273	wpa_supplicant_mesh_deinit(wpa_s);
	274	return -ENOMEM;
	275	}
	276
	277
	278	void wpa_mesh_notify_peer(struct wpa_supplicant wpa_s, const u8 addr,
	279	const u8 *ies, size_t ie_len)
	280	{
	281	struct ieee802_11_elems elems;
	282
	283	wpa_msg(wpa_s, MSG_INFO,
	284	"new peer notification for " MACSTR, MAC2STR(addr));
	285
	286	if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
	287	wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
	288	MAC2STR(addr));
5f92659d	289	return;
8319e312	290	}
5f92659d	291	wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
8319e312 TP	292	}
	293
	294
fbca4c89 JA	295	void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
	296	struct wpabuf **extra_ie)
	297	{
	298	/* EID + 0-length (wildcard) mesh-id */
	299	size_t ielen = 2;
	300
	301	if (wpabuf_resize(extra_ie, ielen) == 0) {
	302	wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
	303	wpabuf_put_u8(*extra_ie, 0);
	304	}
	305	}
	306
	307
8319e312 TP	308	int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
	309	struct wpa_ssid *ssid)
	310	{
	311	struct wpa_driver_mesh_join_params params;
	312	int ret = 0;
	313
	314	if (!ssid \|\| !ssid->ssid \|\| !ssid->ssid_len \|\| !ssid->frequency) {
	315	ret = -ENOENT;
	316	goto out;
	317	}
	318
	319	wpa_supplicant_mesh_deinit(wpa_s);
	320
0530eb10 JM	321	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
	322	wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
	323	wpa_s->group_cipher = WPA_CIPHER_CCMP;
	324	wpa_s->mgmt_group_cipher = 0;
	325	} else {
	326	wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
	327	wpa_s->group_cipher = WPA_CIPHER_NONE;
	328	wpa_s->mgmt_group_cipher = 0;
	329	}
	330
8319e312 TP	331	os_memset(&params, 0, sizeof(params));
	332	params.meshid = ssid->ssid;
	333	params.meshid_len = ssid->ssid_len;
54fe48b9 JM	334	ibss_mesh_setup_freq(wpa_s, ssid, &params.freq);
54fe48b9 JM	335	wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
a65efbfb	336	wpa_s->mesh_vht_enabled = !!params.freq.vht_enabled;
9c58c5f7 MH	337	if (ssid->beacon_int > 0)
	338	params.beacon_int = ssid->beacon_int;
	339	else if (wpa_s->conf->beacon_int > 0)
	340	params.beacon_int = wpa_s->conf->beacon_int;
4b409368	341	params.max_peer_links = wpa_s->conf->max_peer_links;
8319e312 TP	342
	343	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
	344	params.flags \|= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
	345	params.flags \|= WPA_DRIVER_MESH_FLAG_AMPE;
5f92659d	346	wpa_s->conf->user_mpm = 1;
8319e312 TP	347	}
8319e312 TP	348
5f92659d BC	349	if (wpa_s->conf->user_mpm) {
	350	params.flags \|= WPA_DRIVER_MESH_FLAG_USER_MPM;
	351	params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
	352	} else {
	353	params.flags \|= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
	354	params.conf.flags \|= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
	355	}
5a2a6de6	356	params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
8319e312 TP	357
	358	if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
	359	wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
41312fc7	360	wpa_drv_leave_mesh(wpa_s);
8319e312 TP	361	ret = -1;
	362	goto out;
	363	}
	364
	365	if (wpa_s->ifmsh) {
8a51dcbc MH	366	params.ies = wpa_s->ifmsh->mconf->rsn_ie;
8a51dcbc MH	367	params.ie_len = wpa_s->ifmsh->mconf->rsn_ie_len;
8319e312 TP	368	params.basic_rates = wpa_s->ifmsh->basic_rates;
	369	}
	370
	371	wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
	372	wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
	373	ret = wpa_drv_join_mesh(wpa_s, &params);
	374	if (ret)
	375	wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
	376
	377	/* hostapd sets the interface down until we associate */
	378	wpa_drv_set_operstate(wpa_s, 1);
	379
	380	out:
	381	return ret;
	382	}
	383
	384
	385	int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
	386	{
	387	int ret = 0;
	388
	389	wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
	390
4e0990dc JM	391	/* Need to send peering close messages first */
	392	wpa_supplicant_mesh_deinit(wpa_s);
	393
8319e312 TP	394	ret = wpa_drv_leave_mesh(wpa_s);
	395	if (ret)
	396	wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
	397
	398	wpa_drv_set_operstate(wpa_s, 1);
	399
8319e312 TP	400	return ret;
8319e312 TP	401	}
79070906 MH	402
	403
	404	static int mesh_attr_text(const u8 ies, size_t ies_len, char buf, char *end)
	405	{
	406	struct ieee802_11_elems elems;
	407	char mesh_id, pos = buf;
	408	u8 *bss_basic_rate_set;
	409	int bss_basic_rate_set_len, ret, i;
	410
	411	if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
	412	return -1;
	413
	414	if (elems.mesh_id_len < 1)
	415	return 0;
	416
	417	mesh_id = os_malloc(elems.mesh_id_len + 1);
	418	if (mesh_id == NULL)
	419	return -1;
	420
	421	os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
	422	mesh_id[elems.mesh_id_len] = '\0';
	423	ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
	424	os_free(mesh_id);
d85e1fc8	425	if (os_snprintf_error(end - pos, ret))
79070906 MH	426	return pos - buf;
	427	pos += ret;
	428
	429	if (elems.mesh_config_len > 6) {
	430	ret = os_snprintf(pos, end - pos,
	431	"active_path_selection_protocol_id=0x%02x\n"
	432	"active_path_selection_metric_id=0x%02x\n"
	433	"congestion_control_mode_id=0x%02x\n"
	434	"synchronization_method_id=0x%02x\n"
	435	"authentication_protocol_id=0x%02x\n"
	436	"mesh_formation_info=0x%02x\n"
	437	"mesh_capability=0x%02x\n",
	438	elems.mesh_config[0], elems.mesh_config[1],
	439	elems.mesh_config[2], elems.mesh_config[3],
	440	elems.mesh_config[4], elems.mesh_config[5],
	441	elems.mesh_config[6]);
d85e1fc8	442	if (os_snprintf_error(end - pos, ret))
79070906 MH	443	return pos - buf;
	444	pos += ret;
	445	}
	446
	447	bss_basic_rate_set = os_malloc(elems.supp_rates_len +
	448	elems.ext_supp_rates_len);
	449	if (bss_basic_rate_set == NULL)
	450	return -1;
	451
	452	bss_basic_rate_set_len = 0;
	453	for (i = 0; i < elems.supp_rates_len; i++) {
	454	if (elems.supp_rates[i] & 0x80) {
	455	bss_basic_rate_set[bss_basic_rate_set_len++] =
	456	(elems.supp_rates[i] & 0x7f) * 5;
	457	}
	458	}
	459	for (i = 0; i < elems.ext_supp_rates_len; i++) {
	460	if (elems.ext_supp_rates[i] & 0x80) {
	461	bss_basic_rate_set[bss_basic_rate_set_len++] =
	462	(elems.ext_supp_rates[i] & 0x7f) * 5;
	463	}
	464	}
	465	if (bss_basic_rate_set_len > 0) {
	466	ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
	467	bss_basic_rate_set[0]);
d85e1fc8	468	if (os_snprintf_error(end - pos, ret))
c9bf7b66	469	goto fail;
79070906 MH	470	pos += ret;
	471
	472	for (i = 1; i < bss_basic_rate_set_len; i++) {
	473	ret = os_snprintf(pos, end - pos, " %d",
	474	bss_basic_rate_set[i]);
d85e1fc8	475	if (os_snprintf_error(end - pos, ret))
c9bf7b66	476	goto fail;
79070906 MH	477	pos += ret;
	478	}
	479
	480	ret = os_snprintf(pos, end - pos, "\n");
d85e1fc8	481	if (os_snprintf_error(end - pos, ret))
c9bf7b66	482	goto fail;
79070906 MH	483	pos += ret;
79070906 MH	484	}
c9bf7b66	485	fail:
79070906 MH	486	os_free(bss_basic_rate_set);
	487
	488	return pos - buf;
	489	}
	490
	491
	492	int wpas_mesh_scan_result_text(const u8 ies, size_t ies_len, char buf,
	493	char *end)
	494	{
	495	return mesh_attr_text(ies, ies_len, buf, end);
	496	}
5b78493f MH	497
	498
	499	static int wpas_mesh_get_ifname(struct wpa_supplicant wpa_s, char ifname,
	500	size_t len)
	501	{
	502	char *ifname_ptr = wpa_s->ifname;
	503	int res;
	504
	505	res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
	506	wpa_s->mesh_if_idx);
	507	if (os_snprintf_error(len, res) \|\|
	508	(os_strlen(ifname) >= IFNAMSIZ &&
	509	os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
	510	/* Try to avoid going over the IFNAMSIZ length limit */
	511	res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
	512	if (os_snprintf_error(len, res))
	513	return -1;
	514	}
	515	wpa_s->mesh_if_idx++;
	516	return 0;
	517	}
	518
	519
	520	int wpas_mesh_add_interface(struct wpa_supplicant wpa_s, char ifname,
	521	size_t len)
	522	{
	523	struct wpa_interface iface;
	524	struct wpa_supplicant *mesh_wpa_s;
	525	u8 addr[ETH_ALEN];
	526
	527	if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
	528	return -1;
	529
	530	if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
	531	NULL) < 0) {
	532	wpa_printf(MSG_ERROR,
	533	"mesh: Failed to create new mesh interface");
	534	return -1;
	535	}
	536	wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
	537	MACSTR, ifname, MAC2STR(addr));
	538
	539	os_memset(&iface, 0, sizeof(iface));
	540	iface.ifname = ifname;
	541	iface.driver = wpa_s->driver->name;
	542	iface.driver_param = wpa_s->conf->driver_param;
	543	iface.ctrl_interface = wpa_s->conf->ctrl_interface;
	544
1772d348	545	mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
5b78493f MH	546	if (!mesh_wpa_s) {
	547	wpa_printf(MSG_ERROR,
	548	"mesh: Failed to create new wpa_supplicant interface");
	549	wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
	550	return -1;
	551	}
	552	mesh_wpa_s->mesh_if_created = 1;
5b78493f MH	553	return 0;
5b78493f MH	554	}