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

/*
 * wpa_supplicant - IBSS RSN
 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "l2_packet/l2_packet.h"
#include "rsn_supp/wpa.h"
#include "rsn_supp/wpa_ie.h"
#include "ap/wpa_auth.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "ibss_rsn.h"


static struct ibss_rsn_peer * ibss_rsn_get_peer(struct ibss_rsn *ibss_rsn,
						const u8 *addr)
{
	struct ibss_rsn_peer *peer;

	for (peer = ibss_rsn->peers; peer; peer = peer->next)
		if (os_memcmp(addr, peer->addr, ETH_ALEN) == 0)
			break;
	return peer;
}


static void ibss_rsn_free(struct ibss_rsn_peer *peer)
{
	wpa_auth_sta_deinit(peer->auth);
	wpa_sm_deinit(peer->supp);
	os_free(peer);
}


static void supp_set_state(void *ctx, enum wpa_states state)
{
	struct ibss_rsn_peer *peer = ctx;
	peer->supp_state = state;
}


static enum wpa_states supp_get_state(void *ctx)
{
	struct ibss_rsn_peer *peer = ctx;
	return peer->supp_state;
}


static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf,
			   size_t len)
{
	struct ibss_rsn_peer *peer = ctx;
	struct wpa_supplicant *wpa_s = peer->ibss_rsn->wpa_s;

	wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x "
		   "len=%lu)",
		   __func__, MAC2STR(dest), proto, (unsigned long) len);

	if (wpa_s->l2)
		return l2_packet_send(wpa_s->l2, dest, proto, buf, len);

	return wpa_drv_send_eapol(wpa_s, dest, proto, buf, len);
}


static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data,
			     u16 data_len, size_t *msg_len, void **data_pos)
{
	struct ieee802_1x_hdr *hdr;

	wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)",
		   __func__, type, data_len);

	*msg_len = sizeof(*hdr) + data_len;
	hdr = os_malloc(*msg_len);
	if (hdr == NULL)
		return NULL;

	hdr->version = 2;
	hdr->type = type;
	hdr->length = host_to_be16(data_len);

	if (data)
		os_memcpy(hdr + 1, data, data_len);
	else
		os_memset(hdr + 1, 0, data_len);

	if (data_pos)
		*data_pos = hdr + 1;

	return (u8 *) hdr;
}


static int supp_get_beacon_ie(void *ctx)
{
	struct ibss_rsn_peer *peer = ctx;

	wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
	/* TODO: get correct RSN IE */
	return wpa_sm_set_ap_rsn_ie(peer->supp,
				    (u8 *) "\x30\x14\x01\x00"
				    "\x00\x0f\xac\x04"
				    "\x01\x00\x00\x0f\xac\x04"
				    "\x01\x00\x00\x0f\xac\x02"
				    "\x00\x00", 22);
}


static int supp_set_key(void *ctx, enum wpa_alg alg,
			const u8 *addr, int key_idx, int set_tx,
			const u8 *seq, size_t seq_len,
			const u8 *key, size_t key_len)
{
	struct ibss_rsn_peer *peer = ctx;

	wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d "
		   "set_tx=%d)",
		   __func__, alg, MAC2STR(addr), key_idx, set_tx);
	wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len);
	wpa_hexdump_key(MSG_DEBUG, "SUPP: set_key - key", key, key_len);

	if (key_idx == 0) {
		/*
		 * In IBSS RSN, the pairwise key from the 4-way handshake
		 * initiated by the peer with highest MAC address is used.
		 */
		if (os_memcmp(peer->ibss_rsn->wpa_s->own_addr, peer->addr,
			      ETH_ALEN) > 0) {
			wpa_printf(MSG_DEBUG, "SUPP: Do not use this PTK");
			return 0;
		}
	}

	if (is_broadcast_ether_addr(addr))
		addr = peer->addr;
	return wpa_drv_set_key(peer->ibss_rsn->wpa_s, alg, addr, key_idx,
			       set_tx, seq, seq_len, key, key_len);
}


static void * supp_get_network_ctx(void *ctx)
{
	struct ibss_rsn_peer *peer = ctx;
	return wpa_supplicant_get_ssid(peer->ibss_rsn->wpa_s);
}


static int supp_mlme_setprotection(void *ctx, const u8 *addr,
				   int protection_type, int key_type)
{
	wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d "
		   "key_type=%d)",
		   __func__, MAC2STR(addr), protection_type, key_type);
	return 0;
}


static void supp_cancel_auth_timeout(void *ctx)
{
	wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
}


static void supp_deauthenticate(void * ctx, int reason_code)
{
	wpa_printf(MSG_DEBUG, "SUPP: %s (TODO)", __func__);
}


static int ibss_rsn_supp_init(struct ibss_rsn_peer *peer, const u8 *own_addr,
			      const u8 *psk)
{
	struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx));
	if (ctx == NULL)
		return -1;

	ctx->ctx = peer;
	ctx->msg_ctx = peer->ibss_rsn->wpa_s;
	ctx->set_state = supp_set_state;
	ctx->get_state = supp_get_state;
	ctx->ether_send = supp_ether_send;
	ctx->get_beacon_ie = supp_get_beacon_ie;
	ctx->alloc_eapol = supp_alloc_eapol;
	ctx->set_key = supp_set_key;
	ctx->get_network_ctx = supp_get_network_ctx;
	ctx->mlme_setprotection = supp_mlme_setprotection;
	ctx->cancel_auth_timeout = supp_cancel_auth_timeout;
	ctx->deauthenticate = supp_deauthenticate;
	peer->supp = wpa_sm_init(ctx);
	if (peer->supp == NULL) {
		wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed");
		return -1;
	}

	wpa_sm_set_own_addr(peer->supp, own_addr);
	wpa_sm_set_param(peer->supp, WPA_PARAM_RSN_ENABLED, 1);
	wpa_sm_set_param(peer->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN);
	wpa_sm_set_param(peer->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP);
	wpa_sm_set_param(peer->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP);
	wpa_sm_set_param(peer->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK);
	wpa_sm_set_pmk(peer->supp, psk, PMK_LEN);

	peer->supp_ie_len = sizeof(peer->supp_ie);
	if (wpa_sm_set_assoc_wpa_ie_default(peer->supp, peer->supp_ie,
					    &peer->supp_ie_len) < 0) {
		wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
			   " failed");
		return -1;
	}

	wpa_sm_notify_assoc(peer->supp, peer->addr);

	return 0;
}


static void auth_logger(void *ctx, const u8 *addr, logger_level level,
			const char *txt)
{
	if (addr)
		wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s",
			   MAC2STR(addr), txt);
	else
		wpa_printf(MSG_DEBUG, "AUTH: %s", txt);
}


static const u8 * auth_get_psk(void *ctx, const u8 *addr, const u8 *prev_psk)
{
	struct ibss_rsn *ibss_rsn = ctx;
	wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)",
		   __func__, MAC2STR(addr), prev_psk);
	if (prev_psk)
		return NULL;
	return ibss_rsn->psk;
}


static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data,
			   size_t data_len, int encrypt)
{
	struct ibss_rsn *ibss_rsn = ctx;
	struct wpa_supplicant *wpa_s = ibss_rsn->wpa_s;

	wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu "
		   "encrypt=%d)",
		   __func__, MAC2STR(addr), (unsigned long) data_len, encrypt);

	if (wpa_s->l2)
		return l2_packet_send(wpa_s->l2, addr, ETH_P_EAPOL, data,
				      data_len);

	return wpa_drv_send_eapol(wpa_s, addr, ETH_P_EAPOL, data, data_len);
}


static int auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
			const u8 *addr, int idx, u8 *key, size_t key_len)
{
	struct ibss_rsn *ibss_rsn = ctx;
	u8 seq[6];

	os_memset(seq, 0, sizeof(seq));

	if (addr) {
		wpa_printf(MSG_DEBUG, "AUTH: %s(alg=%d addr=" MACSTR
			   " key_idx=%d)",
			   __func__, alg, MAC2STR(addr), idx);
	} else {
		wpa_printf(MSG_DEBUG, "AUTH: %s(alg=%d key_idx=%d)",
			   __func__, alg, idx);
	}
	wpa_hexdump_key(MSG_DEBUG, "AUTH: set_key - key", key, key_len);

	if (idx == 0) {
		/*
		 * In IBSS RSN, the pairwise key from the 4-way handshake
		 * initiated by the peer with highest MAC address is used.
		 */
		if (addr == NULL ||
		    os_memcmp(ibss_rsn->wpa_s->own_addr, addr, ETH_ALEN) < 0) {
			wpa_printf(MSG_DEBUG, "AUTH: Do not use this PTK");
			return 0;
		}
	}

	return wpa_drv_set_key(ibss_rsn->wpa_s, alg, addr, idx,
			       1, seq, 6, key, key_len);
}


static int auth_for_each_sta(void *ctx, int (*cb)(struct wpa_state_machine *sm,
						  void *ctx),
			     void *cb_ctx)
{
	struct ibss_rsn *ibss_rsn = ctx;
	struct ibss_rsn_peer *peer;

	wpa_printf(MSG_DEBUG, "AUTH: for_each_sta");

	for (peer = ibss_rsn->peers; peer; peer = peer->next) {
		if (peer->auth && cb(peer->auth, cb_ctx))
			return 1;
	}

	return 0;
}


static void ibss_set_sta_authorized(struct ibss_rsn *ibss_rsn,
				    struct ibss_rsn_peer *peer, int authorized)
{
	int res;

	if (authorized) {
		res = wpa_drv_sta_set_flags(ibss_rsn->wpa_s, peer->addr,
					    WPA_STA_AUTHORIZED,
					    WPA_STA_AUTHORIZED, ~0);
		wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " authorizing port",
			   MAC2STR(peer->addr));
	} else {
		res = wpa_drv_sta_set_flags(ibss_rsn->wpa_s, peer->addr,
					    0, 0, ~WPA_STA_AUTHORIZED);
		wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " unauthorizing port",
			   MAC2STR(peer->addr));
	}

	if (res && errno != ENOENT) {
		wpa_printf(MSG_DEBUG, "Could not set station " MACSTR " flags "
			   "for kernel driver (errno=%d)",
			   MAC2STR(peer->addr), errno);
	}
}


static void auth_set_eapol(void *ctx, const u8 *addr,
				       wpa_eapol_variable var, int value)
{
	struct ibss_rsn *ibss_rsn = ctx;
	struct ibss_rsn_peer *peer = ibss_rsn_get_peer(ibss_rsn, addr);

	if (peer == NULL)
		return;

	switch (var) {
	case WPA_EAPOL_authorized:
		ibss_set_sta_authorized(ibss_rsn, peer, value);
		break;
	default:
		/* do not handle any other event */
		wpa_printf(MSG_DEBUG, "AUTH: eapol event not handled %d", var);
		break;
	}
}


static int ibss_rsn_auth_init_group(struct ibss_rsn *ibss_rsn,
				    const u8 *own_addr)
{
	struct wpa_auth_config conf;
	struct wpa_auth_callbacks cb;

	wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine");

	os_memset(&conf, 0, sizeof(conf));
	conf.wpa = 2;
	conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
	conf.wpa_pairwise = WPA_CIPHER_CCMP;
	conf.rsn_pairwise = WPA_CIPHER_CCMP;
	conf.wpa_group = WPA_CIPHER_CCMP;
	conf.eapol_version = 2;
	conf.wpa_group_rekey = 600;

	os_memset(&cb, 0, sizeof(cb));
	cb.ctx = ibss_rsn;
	cb.logger = auth_logger;
	cb.set_eapol = auth_set_eapol;
	cb.send_eapol = auth_send_eapol;
	cb.get_psk = auth_get_psk;
	cb.set_key = auth_set_key;
	cb.for_each_sta = auth_for_each_sta;

	ibss_rsn->auth_group = wpa_init(own_addr, &conf, &cb);
	if (ibss_rsn->auth_group == NULL) {
		wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
		return -1;
	}

	wpa_init_keys(ibss_rsn->auth_group);

	return 0;
}


static int ibss_rsn_auth_init(struct ibss_rsn *ibss_rsn,
			      struct ibss_rsn_peer *peer)
{
	peer->auth = wpa_auth_sta_init(ibss_rsn->auth_group, peer->addr);
	if (peer->auth == NULL) {
		wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed");
		return -1;
	}

	/* TODO: get peer RSN IE with Probe Request */
	if (wpa_validate_wpa_ie(ibss_rsn->auth_group, peer->auth,
				(u8 *) "\x30\x14\x01\x00"
				"\x00\x0f\xac\x04"
				"\x01\x00\x00\x0f\xac\x04"
				"\x01\x00\x00\x0f\xac\x02"
				"\x00\x00", 22, NULL, 0) !=
	    WPA_IE_OK) {
		wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed");
		return -1;
	}

	if (wpa_auth_sm_event(peer->auth, WPA_ASSOC))
		return -1;

	if (wpa_auth_sta_associated(ibss_rsn->auth_group, peer->auth))
		return -1;

	return 0;
}


int ibss_rsn_start(struct ibss_rsn *ibss_rsn, const u8 *addr)
{
	struct ibss_rsn_peer *peer;

	if (ibss_rsn == NULL)
		return -1;

	if (ibss_rsn_get_peer(ibss_rsn, addr)) {
		wpa_printf(MSG_DEBUG, "RSN: IBSS Authenticator and Supplicant "
			   "for peer " MACSTR " already running",
			   MAC2STR(addr));
		return 0;
	}

	wpa_printf(MSG_DEBUG, "RSN: Starting IBSS Authenticator and "
		   "Supplicant for peer " MACSTR, MAC2STR(addr));

	peer = os_zalloc(sizeof(*peer));
	if (peer == NULL)
		return -1;

	peer->ibss_rsn = ibss_rsn;
	os_memcpy(peer->addr, addr, ETH_ALEN);

	if (ibss_rsn_supp_init(peer, ibss_rsn->wpa_s->own_addr, ibss_rsn->psk)
	    < 0) {
		ibss_rsn_free(peer);
		return -1;
	}

	if (ibss_rsn_auth_init(ibss_rsn, peer) < 0) {
		ibss_rsn_free(peer);
		return -1;
	}

	peer->next = ibss_rsn->peers;
	ibss_rsn->peers = peer;

	return 0;
}


void ibss_rsn_stop(struct ibss_rsn *ibss_rsn, const u8 *peermac)
{
	struct ibss_rsn_peer *peer, *prev;

	if (ibss_rsn == NULL)
		return;

	if (peermac == NULL) {
		/* remove all peers */
		wpa_printf(MSG_DEBUG, "%s: Remove all peers", __func__);
		peer = ibss_rsn->peers;
		while (peer) {
			prev = peer;
			peer = peer->next;
			ibss_rsn_free(prev);
			ibss_rsn->peers = peer;
		}
	} else {
		/* remove specific peer */
		wpa_printf(MSG_DEBUG, "%s: Remove specific peer " MACSTR,
			   __func__, MAC2STR(peermac));

		for (prev = NULL, peer = ibss_rsn->peers; peer != NULL;
		     prev = peer, peer = peer->next) {
			if (os_memcmp(peermac, peer->addr, ETH_ALEN) == 0) {
				if (prev == NULL)
					ibss_rsn->peers = peer->next;
				else
					prev->next = peer->next;
				ibss_rsn_free(peer);
				wpa_printf(MSG_DEBUG, "%s: Successfully "
					   "removed a specific peer",
					   __func__);
				break;
			}
		}
	}
}


struct ibss_rsn * ibss_rsn_init(struct wpa_supplicant *wpa_s)
{
	struct ibss_rsn *ibss_rsn;

	ibss_rsn = os_zalloc(sizeof(*ibss_rsn));
	if (ibss_rsn == NULL)
		return NULL;
	ibss_rsn->wpa_s = wpa_s;

	if (ibss_rsn_auth_init_group(ibss_rsn, wpa_s->own_addr) < 0) {
		ibss_rsn_deinit(ibss_rsn);
		return NULL;
	}

	return ibss_rsn;
}


void ibss_rsn_deinit(struct ibss_rsn *ibss_rsn)
{
	struct ibss_rsn_peer *peer, *prev;

	if (ibss_rsn == NULL)
		return;

	peer = ibss_rsn->peers;
	while (peer) {
		prev = peer;
		peer = peer->next;
		ibss_rsn_free(prev);
	}

	wpa_deinit(ibss_rsn->auth_group);
	os_free(ibss_rsn);

}


static int ibss_rsn_eapol_dst_supp(const u8 *buf, size_t len)
{
	const struct ieee802_1x_hdr *hdr;
	const struct wpa_eapol_key *key;
	u16 key_info;
	size_t plen;

	/* TODO: Support other EAPOL packets than just EAPOL-Key */

	if (len < sizeof(*hdr) + sizeof(*key))
		return -1;

	hdr = (const struct ieee802_1x_hdr *) buf;
	key = (const struct wpa_eapol_key *) (hdr + 1);
	plen = be_to_host16(hdr->length);

	if (hdr->version < EAPOL_VERSION) {
		/* TODO: backwards compatibility */
	}
	if (hdr->type != IEEE802_1X_TYPE_EAPOL_KEY) {
		wpa_printf(MSG_DEBUG, "RSN: EAPOL frame (type %u) discarded, "
			"not a Key frame", hdr->type);
		return -1;
	}
	if (plen > len - sizeof(*hdr) || plen < sizeof(*key)) {
		wpa_printf(MSG_DEBUG, "RSN: EAPOL frame payload size %lu "
			   "invalid (frame size %lu)",
			   (unsigned long) plen, (unsigned long) len);
		return -1;
	}

	if (key->type != EAPOL_KEY_TYPE_RSN) {
		wpa_printf(MSG_DEBUG, "RSN: EAPOL-Key type (%d) unknown, "
			   "discarded", key->type);
		return -1;
	}

	key_info = WPA_GET_BE16(key->key_info);

	return !!(key_info & WPA_KEY_INFO_ACK);
}


static int ibss_rsn_process_rx_eapol(struct ibss_rsn *ibss_rsn,
				     struct ibss_rsn_peer *peer,
				     const u8 *buf, size_t len)
{
	int supp;
	u8 *tmp;

	supp = ibss_rsn_eapol_dst_supp(buf, len);
	if (supp < 0)
		return -1;

	tmp = os_malloc(len);
	if (tmp == NULL)
		return -1;
	os_memcpy(tmp, buf, len);
	if (supp) {
		wpa_printf(MSG_DEBUG, "RSN: IBSS RX EAPOL for Supplicant");
		wpa_sm_rx_eapol(peer->supp, peer->addr, tmp, len);
	} else {
		wpa_printf(MSG_DEBUG, "RSN: IBSS RX EAPOL for Authenticator");
		wpa_receive(ibss_rsn->auth_group, peer->auth, tmp, len);
	}
	os_free(tmp);

	return 1;
}


int ibss_rsn_rx_eapol(struct ibss_rsn *ibss_rsn, const u8 *src_addr,
		      const u8 *buf, size_t len)
{
	struct ibss_rsn_peer *peer;

	if (ibss_rsn == NULL)
		return -1;

	peer = ibss_rsn_get_peer(ibss_rsn, src_addr);
	if (peer)
		return ibss_rsn_process_rx_eapol(ibss_rsn, peer, buf, len);

	if (ibss_rsn_eapol_dst_supp(buf, len) > 0) {
		/*
		 * Create new IBSS peer based on an EAPOL message from the peer
		 * Authenticator.
		 */
		if (ibss_rsn_start(ibss_rsn, src_addr) < 0)
			return -1;
		return ibss_rsn_process_rx_eapol(ibss_rsn, ibss_rsn->peers,
						 buf, len);
	}

	return 0;
}


void ibss_rsn_set_psk(struct ibss_rsn *ibss_rsn, const u8 *psk)
{
	if (ibss_rsn == NULL)
		return;
	os_memcpy(ibss_rsn->psk, psk, PMK_LEN);
}
Commit	Line	Data
11ef8d35 JM	1	/*
	2	* wpa_supplicant - IBSS RSN
	3	* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
	4	*
0f3d578e JM	5	* This software may be distributed under the terms of the BSD license.
0f3d578e JM	6	* See README for more details.
11ef8d35 JM	7	*/
	8
	9	#include "includes.h"
	10
	11	#include "common.h"
e2d492dd	12	#include "l2_packet/l2_packet.h"
3acb5005 JM	13	#include "rsn_supp/wpa.h"
3acb5005 JM	14	#include "rsn_supp/wpa_ie.h"
71934751	15	#include "ap/wpa_auth.h"
1057d78e	16	#include "wpa_supplicant_i.h"
ea038e0d	17	#include "driver_i.h"
11ef8d35 JM	18	#include "ibss_rsn.h"
	19
	20
fa7187bf AQ	21	static struct ibss_rsn_peer * ibss_rsn_get_peer(struct ibss_rsn *ibss_rsn,
	22	const u8 *addr)
	23	{
	24	struct ibss_rsn_peer *peer;
	25
	26	for (peer = ibss_rsn->peers; peer; peer = peer->next)
	27	if (os_memcmp(addr, peer->addr, ETH_ALEN) == 0)
	28	break;
	29	return peer;
	30	}
	31
	32
11ef8d35 JM	33	static void ibss_rsn_free(struct ibss_rsn_peer *peer)
	34	{
	35	wpa_auth_sta_deinit(peer->auth);
	36	wpa_sm_deinit(peer->supp);
	37	os_free(peer);
	38	}
	39
	40
71934751	41	static void supp_set_state(void *ctx, enum wpa_states state)
3146b2b9 JM	42	{
	43	struct ibss_rsn_peer *peer = ctx;
	44	peer->supp_state = state;
	45	}
	46
	47
f385833b XC	48	static enum wpa_states supp_get_state(void *ctx)
	49	{
	50	struct ibss_rsn_peer *peer = ctx;
	51	return peer->supp_state;
	52	}
	53
	54
11ef8d35 JM	55	static int supp_ether_send(void ctx, const u8 dest, u16 proto, const u8 *buf,
	56	size_t len)
	57	{
e2d492dd JM	58	struct ibss_rsn_peer *peer = ctx;
e2d492dd JM	59	struct wpa_supplicant *wpa_s = peer->ibss_rsn->wpa_s;
11ef8d35 JM	60
	61	wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x "
	62	"len=%lu)",
	63	__func__, MAC2STR(dest), proto, (unsigned long) len);
	64
e2d492dd JM	65	if (wpa_s->l2)
e2d492dd JM	66	return l2_packet_send(wpa_s->l2, dest, proto, buf, len);
11ef8d35	67
e2d492dd	68	return wpa_drv_send_eapol(wpa_s, dest, proto, buf, len);
11ef8d35 JM	69	}
	70
	71
	72	static u8 * supp_alloc_eapol(void ctx, u8 type, const void data,
	73	u16 data_len, size_t msg_len, void *data_pos)
	74	{
	75	struct ieee802_1x_hdr *hdr;
	76
	77	wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)",
	78	__func__, type, data_len);
	79
	80	msg_len = sizeof(hdr) + data_len;
	81	hdr = os_malloc(*msg_len);
	82	if (hdr == NULL)
	83	return NULL;
	84
	85	hdr->version = 2;
	86	hdr->type = type;
	87	hdr->length = host_to_be16(data_len);
	88
	89	if (data)
	90	os_memcpy(hdr + 1, data, data_len);
	91	else
	92	os_memset(hdr + 1, 0, data_len);
	93
	94	if (data_pos)
	95	*data_pos = hdr + 1;
	96
	97	return (u8 *) hdr;
	98	}
	99
	100
	101	static int supp_get_beacon_ie(void *ctx)
	102	{
4691fc7b JM	103	struct ibss_rsn_peer *peer = ctx;
4691fc7b JM	104
11ef8d35	105	wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
4691fc7b JM	106	/* TODO: get correct RSN IE */
	107	return wpa_sm_set_ap_rsn_ie(peer->supp,
	108	(u8 *) "\x30\x14\x01\x00"
	109	"\x00\x0f\xac\x04"
	110	"\x01\x00\x00\x0f\xac\x04"
	111	"\x01\x00\x00\x0f\xac\x02"
	112	"\x00\x00", 22);
11ef8d35 JM	113	}
	114
	115
71934751	116	static int supp_set_key(void *ctx, enum wpa_alg alg,
11ef8d35 JM	117	const u8 *addr, int key_idx, int set_tx,
	118	const u8 *seq, size_t seq_len,
	119	const u8 *key, size_t key_len)
	120	{
98f14041 JM	121	struct ibss_rsn_peer *peer = ctx;
98f14041 JM	122
a486c0c7 JM	123	wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d "
	124	"set_tx=%d)",
	125	__func__, alg, MAC2STR(addr), key_idx, set_tx);
	126	wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len);
	127	wpa_hexdump_key(MSG_DEBUG, "SUPP: set_key - key", key, key_len);
	128
98f14041 JM	129	if (key_idx == 0) {
	130	/*
	131	* In IBSS RSN, the pairwise key from the 4-way handshake
	132	* initiated by the peer with highest MAC address is used.
	133	*/
	134	if (os_memcmp(peer->ibss_rsn->wpa_s->own_addr, peer->addr,
a486c0c7 JM	135	ETH_ALEN) > 0) {
a486c0c7 JM	136	wpa_printf(MSG_DEBUG, "SUPP: Do not use this PTK");
98f14041	137	return 0;
a486c0c7	138	}
98f14041 JM	139	}
98f14041 JM	140
4a26df71	141	if (is_broadcast_ether_addr(addr))
89c38e32	142	addr = peer->addr;
98f14041 JM	143	return wpa_drv_set_key(peer->ibss_rsn->wpa_s, alg, addr, key_idx,
98f14041 JM	144	set_tx, seq, seq_len, key, key_len);
11ef8d35 JM	145	}
	146
	147
3146b2b9 JM	148	static void * supp_get_network_ctx(void *ctx)
	149	{
	150	struct ibss_rsn_peer *peer = ctx;
	151	return wpa_supplicant_get_ssid(peer->ibss_rsn->wpa_s);
	152	}
	153
	154
11ef8d35 JM	155	static int supp_mlme_setprotection(void ctx, const u8 addr,
	156	int protection_type, int key_type)
	157	{
	158	wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d "
	159	"key_type=%d)",
	160	__func__, MAC2STR(addr), protection_type, key_type);
	161	return 0;
	162	}
	163
	164
	165	static void supp_cancel_auth_timeout(void *ctx)
	166	{
	167	wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
	168	}
	169
	170
89c38e32 JM	171	static void supp_deauthenticate(void * ctx, int reason_code)
	172	{
	173	wpa_printf(MSG_DEBUG, "SUPP: %s (TODO)", __func__);
	174	}
	175
	176
19df9b07 JM	177	static int ibss_rsn_supp_init(struct ibss_rsn_peer peer, const u8 own_addr,
19df9b07 JM	178	const u8 *psk)
11ef8d35 JM	179	{
	180	struct wpa_sm_ctx ctx = os_zalloc(sizeof(ctx));
	181	if (ctx == NULL)
	182	return -1;
	183
	184	ctx->ctx = peer;
0f057fb2	185	ctx->msg_ctx = peer->ibss_rsn->wpa_s;
3146b2b9	186	ctx->set_state = supp_set_state;
f385833b	187	ctx->get_state = supp_get_state;
11ef8d35 JM	188	ctx->ether_send = supp_ether_send;
	189	ctx->get_beacon_ie = supp_get_beacon_ie;
	190	ctx->alloc_eapol = supp_alloc_eapol;
	191	ctx->set_key = supp_set_key;
3146b2b9	192	ctx->get_network_ctx = supp_get_network_ctx;
11ef8d35 JM	193	ctx->mlme_setprotection = supp_mlme_setprotection;
11ef8d35 JM	194	ctx->cancel_auth_timeout = supp_cancel_auth_timeout;
89c38e32	195	ctx->deauthenticate = supp_deauthenticate;
11ef8d35 JM	196	peer->supp = wpa_sm_init(ctx);
	197	if (peer->supp == NULL) {
	198	wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed");
	199	return -1;
	200	}
	201
	202	wpa_sm_set_own_addr(peer->supp, own_addr);
	203	wpa_sm_set_param(peer->supp, WPA_PARAM_RSN_ENABLED, 1);
	204	wpa_sm_set_param(peer->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN);
	205	wpa_sm_set_param(peer->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP);
	206	wpa_sm_set_param(peer->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP);
	207	wpa_sm_set_param(peer->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK);
	208	wpa_sm_set_pmk(peer->supp, psk, PMK_LEN);
	209
11ef8d35 JM	210	peer->supp_ie_len = sizeof(peer->supp_ie);
	211	if (wpa_sm_set_assoc_wpa_ie_default(peer->supp, peer->supp_ie,
	212	&peer->supp_ie_len) < 0) {
	213	wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
	214	" failed");
	215	return -1;
	216	}
11ef8d35 JM	217
	218	wpa_sm_notify_assoc(peer->supp, peer->addr);
	219
	220	return 0;
	221	}
	222
	223
	224	static void auth_logger(void ctx, const u8 addr, logger_level level,
	225	const char *txt)
	226	{
	227	if (addr)
	228	wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s",
	229	MAC2STR(addr), txt);
	230	else
	231	wpa_printf(MSG_DEBUG, "AUTH: %s", txt);
	232	}
	233
	234
	235	static const u8 * auth_get_psk(void ctx, const u8 addr, const u8 *prev_psk)
	236	{
	237	struct ibss_rsn *ibss_rsn = ctx;
	238	wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)",
	239	__func__, MAC2STR(addr), prev_psk);
	240	if (prev_psk)
	241	return NULL;
	242	return ibss_rsn->psk;
	243	}
	244
	245
	246	static int auth_send_eapol(void ctx, const u8 addr, const u8 *data,
	247	size_t data_len, int encrypt)
	248	{
da3c6a5e JM	249	struct ibss_rsn *ibss_rsn = ctx;
da3c6a5e JM	250	struct wpa_supplicant *wpa_s = ibss_rsn->wpa_s;
11ef8d35 JM	251
	252	wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu "
	253	"encrypt=%d)",
	254	__func__, MAC2STR(addr), (unsigned long) data_len, encrypt);
	255
e2d492dd JM	256	if (wpa_s->l2)
	257	return l2_packet_send(wpa_s->l2, addr, ETH_P_EAPOL, data,
	258	data_len);
11ef8d35	259
e2d492dd	260	return wpa_drv_send_eapol(wpa_s, addr, ETH_P_EAPOL, data, data_len);
11ef8d35 JM	261	}
	262
	263
71934751 JM	264	static int auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
71934751 JM	265	const u8 addr, int idx, u8 key, size_t key_len)
98f14041 JM	266	{
	267	struct ibss_rsn *ibss_rsn = ctx;
	268	u8 seq[6];
98f14041 JM	269
98f14041 JM	270	os_memset(seq, 0, sizeof(seq));
a486c0c7 JM	271
	272	if (addr) {
	273	wpa_printf(MSG_DEBUG, "AUTH: %s(alg=%d addr=" MACSTR
	274	" key_idx=%d)",
	275	__func__, alg, MAC2STR(addr), idx);
	276	} else {
	277	wpa_printf(MSG_DEBUG, "AUTH: %s(alg=%d key_idx=%d)",
	278	__func__, alg, idx);
	279	}
	280	wpa_hexdump_key(MSG_DEBUG, "AUTH: set_key - key", key, key_len);
	281
98f14041 JM	282	if (idx == 0) {
	283	/*
	284	* In IBSS RSN, the pairwise key from the 4-way handshake
	285	* initiated by the peer with highest MAC address is used.
	286	*/
a416fb47 JM	287	if (addr == NULL \|\|
a416fb47 JM	288	os_memcmp(ibss_rsn->wpa_s->own_addr, addr, ETH_ALEN) < 0) {
a486c0c7	289	wpa_printf(MSG_DEBUG, "AUTH: Do not use this PTK");
98f14041	290	return 0;
a486c0c7	291	}
98f14041 JM	292	}
	293
	294	return wpa_drv_set_key(ibss_rsn->wpa_s, alg, addr, idx,
	295	1, seq, 6, key, key_len);
	296	}
	297
	298
92ac6376 XC	299	static int auth_for_each_sta(void ctx, int (cb)(struct wpa_state_machine *sm,
	300	void *ctx),
	301	void *cb_ctx)
	302	{
	303	struct ibss_rsn *ibss_rsn = ctx;
	304	struct ibss_rsn_peer *peer;
	305
	306	wpa_printf(MSG_DEBUG, "AUTH: for_each_sta");
	307
	308	for (peer = ibss_rsn->peers; peer; peer = peer->next) {
	309	if (peer->auth && cb(peer->auth, cb_ctx))
	310	return 1;
	311	}
	312
	313	return 0;
	314	}
	315
	316
e640888c AQ	317	static void ibss_set_sta_authorized(struct ibss_rsn *ibss_rsn,
	318	struct ibss_rsn_peer *peer, int authorized)
	319	{
	320	int res;
	321
	322	if (authorized) {
	323	res = wpa_drv_sta_set_flags(ibss_rsn->wpa_s, peer->addr,
	324	WPA_STA_AUTHORIZED,
	325	WPA_STA_AUTHORIZED, ~0);
	326	wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " authorizing port",
	327	MAC2STR(peer->addr));
	328	} else {
	329	res = wpa_drv_sta_set_flags(ibss_rsn->wpa_s, peer->addr,
	330	0, 0, ~WPA_STA_AUTHORIZED);
	331	wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " unauthorizing port",
	332	MAC2STR(peer->addr));
	333	}
	334
	335	if (res && errno != ENOENT) {
	336	wpa_printf(MSG_DEBUG, "Could not set station " MACSTR " flags "
	337	"for kernel driver (errno=%d)",
	338	MAC2STR(peer->addr), errno);
	339	}
	340	}
	341
	342
	343	static void auth_set_eapol(void ctx, const u8 addr,
	344	wpa_eapol_variable var, int value)
	345	{
	346	struct ibss_rsn *ibss_rsn = ctx;
	347	struct ibss_rsn_peer *peer = ibss_rsn_get_peer(ibss_rsn, addr);
	348
	349	if (peer == NULL)
	350	return;
	351
	352	switch (var) {
	353	case WPA_EAPOL_authorized:
	354	ibss_set_sta_authorized(ibss_rsn, peer, value);
	355	break;
	356	default:
	357	/* do not handle any other event */
	358	wpa_printf(MSG_DEBUG, "AUTH: eapol event not handled %d", var);
	359	break;
	360	}
	361	}
	362
	363
11ef8d35 JM	364	static int ibss_rsn_auth_init_group(struct ibss_rsn *ibss_rsn,
	365	const u8 *own_addr)
	366	{
	367	struct wpa_auth_config conf;
	368	struct wpa_auth_callbacks cb;
	369
	370	wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine");
	371
	372	os_memset(&conf, 0, sizeof(conf));
	373	conf.wpa = 2;
	374	conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
	375	conf.wpa_pairwise = WPA_CIPHER_CCMP;
	376	conf.rsn_pairwise = WPA_CIPHER_CCMP;
	377	conf.wpa_group = WPA_CIPHER_CCMP;
	378	conf.eapol_version = 2;
13579b98	379	conf.wpa_group_rekey = 600;
11ef8d35 JM	380
	381	os_memset(&cb, 0, sizeof(cb));
	382	cb.ctx = ibss_rsn;
	383	cb.logger = auth_logger;
e640888c	384	cb.set_eapol = auth_set_eapol;
11ef8d35 JM	385	cb.send_eapol = auth_send_eapol;
11ef8d35 JM	386	cb.get_psk = auth_get_psk;
98f14041	387	cb.set_key = auth_set_key;
92ac6376	388	cb.for_each_sta = auth_for_each_sta;
11ef8d35 JM	389
	390	ibss_rsn->auth_group = wpa_init(own_addr, &conf, &cb);
	391	if (ibss_rsn->auth_group == NULL) {
	392	wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
	393	return -1;
	394	}
	395
457a126e JB	396	wpa_init_keys(ibss_rsn->auth_group);
457a126e JB	397
11ef8d35 JM	398	return 0;
	399	}
	400
	401
	402	static int ibss_rsn_auth_init(struct ibss_rsn *ibss_rsn,
	403	struct ibss_rsn_peer *peer)
	404	{
	405	peer->auth = wpa_auth_sta_init(ibss_rsn->auth_group, peer->addr);
	406	if (peer->auth == NULL) {
	407	wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed");
	408	return -1;
	409	}
	410
d0fc6e12 JM	411	/* TODO: get peer RSN IE with Probe Request */
d0fc6e12 JM	412	if (wpa_validate_wpa_ie(ibss_rsn->auth_group, peer->auth,
4691fc7b	413	(u8 *) "\x30\x14\x01\x00"
d0fc6e12 JM	414	"\x00\x0f\xac\x04"
d0fc6e12 JM	415	"\x01\x00\x00\x0f\xac\x04"
4691fc7b JM	416	"\x01\x00\x00\x0f\xac\x02"
4691fc7b JM	417	"\x00\x00", 22, NULL, 0) !=
d0fc6e12	418	WPA_IE_OK) {
11ef8d35 JM	419	wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed");
	420	return -1;
	421	}
11ef8d35	422
6f9b5d16 JM	423	if (wpa_auth_sm_event(peer->auth, WPA_ASSOC))
6f9b5d16 JM	424	return -1;
11ef8d35	425
6f9b5d16 JM	426	if (wpa_auth_sta_associated(ibss_rsn->auth_group, peer->auth))
6f9b5d16 JM	427	return -1;
11ef8d35 JM	428
	429	return 0;
	430	}
	431
	432
	433	int ibss_rsn_start(struct ibss_rsn ibss_rsn, const u8 addr)
	434	{
	435	struct ibss_rsn_peer *peer;
	436
78177a00 JM	437	if (ibss_rsn == NULL)
	438	return -1;
	439
fa7187bf AQ	440	if (ibss_rsn_get_peer(ibss_rsn, addr)) {
	441	wpa_printf(MSG_DEBUG, "RSN: IBSS Authenticator and Supplicant "
	442	"for peer " MACSTR " already running",
	443	MAC2STR(addr));
	444	return 0;
6c9a98a2 JM	445	}
6c9a98a2 JM	446
11ef8d35 JM	447	wpa_printf(MSG_DEBUG, "RSN: Starting IBSS Authenticator and "
	448	"Supplicant for peer " MACSTR, MAC2STR(addr));
	449
	450	peer = os_zalloc(sizeof(*peer));
	451	if (peer == NULL)
	452	return -1;
	453
e2d492dd	454	peer->ibss_rsn = ibss_rsn;
11ef8d35 JM	455	os_memcpy(peer->addr, addr, ETH_ALEN);
	456
	457	if (ibss_rsn_supp_init(peer, ibss_rsn->wpa_s->own_addr, ibss_rsn->psk)
	458	< 0) {
	459	ibss_rsn_free(peer);
	460	return -1;
	461	}
	462
	463	if (ibss_rsn_auth_init(ibss_rsn, peer) < 0) {
	464	ibss_rsn_free(peer);
	465	return -1;
	466	}
	467
	468	peer->next = ibss_rsn->peers;
	469	ibss_rsn->peers = peer;
	470
	471	return 0;
	472	}
	473
	474
ea244d21 XC	475	void ibss_rsn_stop(struct ibss_rsn ibss_rsn, const u8 peermac)
	476	{
	477	struct ibss_rsn_peer peer, prev;
	478
	479	if (ibss_rsn == NULL)
	480	return;
	481
	482	if (peermac == NULL) {
	483	/* remove all peers */
	484	wpa_printf(MSG_DEBUG, "%s: Remove all peers", __func__);
	485	peer = ibss_rsn->peers;
	486	while (peer) {
	487	prev = peer;
	488	peer = peer->next;
	489	ibss_rsn_free(prev);
	490	ibss_rsn->peers = peer;
	491	}
	492	} else {
	493	/* remove specific peer */
	494	wpa_printf(MSG_DEBUG, "%s: Remove specific peer " MACSTR,
	495	__func__, MAC2STR(peermac));
	496
	497	for (prev = NULL, peer = ibss_rsn->peers; peer != NULL;
	498	prev = peer, peer = peer->next) {
	499	if (os_memcmp(peermac, peer->addr, ETH_ALEN) == 0) {
	500	if (prev == NULL)
	501	ibss_rsn->peers = peer->next;
	502	else
	503	prev->next = peer->next;
	504	ibss_rsn_free(peer);
	505	wpa_printf(MSG_DEBUG, "%s: Successfully "
	506	"removed a specific peer",
	507	__func__);
	508	break;
	509	}
	510	}
	511	}
	512	}
	513
	514
11ef8d35 JM	515	struct ibss_rsn * ibss_rsn_init(struct wpa_supplicant *wpa_s)
	516	{
	517	struct ibss_rsn *ibss_rsn;
	518
	519	ibss_rsn = os_zalloc(sizeof(*ibss_rsn));
	520	if (ibss_rsn == NULL)
	521	return NULL;
	522	ibss_rsn->wpa_s = wpa_s;
	523
	524	if (ibss_rsn_auth_init_group(ibss_rsn, wpa_s->own_addr) < 0) {
	525	ibss_rsn_deinit(ibss_rsn);
	526	return NULL;
	527	}
	528
	529	return ibss_rsn;
	530	}
	531
	532
	533	void ibss_rsn_deinit(struct ibss_rsn *ibss_rsn)
	534	{
	535	struct ibss_rsn_peer peer, prev;
	536
	537	if (ibss_rsn == NULL)
	538	return;
	539
	540	peer = ibss_rsn->peers;
	541	while (peer) {
	542	prev = peer;
	543	peer = peer->next;
	544	ibss_rsn_free(prev);
	545	}
	546
	547	wpa_deinit(ibss_rsn->auth_group);
	548	os_free(ibss_rsn);
	549
	550	}
8be18440 JM	551
	552
	553	static int ibss_rsn_eapol_dst_supp(const u8 *buf, size_t len)
	554	{
	555	const struct ieee802_1x_hdr *hdr;
	556	const struct wpa_eapol_key *key;
	557	u16 key_info;
	558	size_t plen;
	559
	560	/* TODO: Support other EAPOL packets than just EAPOL-Key */
	561
	562	if (len < sizeof(hdr) + sizeof(key))
	563	return -1;
	564
	565	hdr = (const struct ieee802_1x_hdr *) buf;
	566	key = (const struct wpa_eapol_key *) (hdr + 1);
	567	plen = be_to_host16(hdr->length);
	568
	569	if (hdr->version < EAPOL_VERSION) {
	570	/* TODO: backwards compatibility */
	571	}
	572	if (hdr->type != IEEE802_1X_TYPE_EAPOL_KEY) {
	573	wpa_printf(MSG_DEBUG, "RSN: EAPOL frame (type %u) discarded, "
	574	"not a Key frame", hdr->type);
	575	return -1;
	576	}
	577	if (plen > len - sizeof(hdr) \|\| plen < sizeof(key)) {
	578	wpa_printf(MSG_DEBUG, "RSN: EAPOL frame payload size %lu "
	579	"invalid (frame size %lu)",
	580	(unsigned long) plen, (unsigned long) len);
	581	return -1;
	582	}
	583
	584	if (key->type != EAPOL_KEY_TYPE_RSN) {
	585	wpa_printf(MSG_DEBUG, "RSN: EAPOL-Key type (%d) unknown, "
	586	"discarded", key->type);
	587	return -1;
	588	}
	589
	590	key_info = WPA_GET_BE16(key->key_info);
	591
	592	return !!(key_info & WPA_KEY_INFO_ACK);
	593	}
	594
	595
	596	static int ibss_rsn_process_rx_eapol(struct ibss_rsn *ibss_rsn,
	597	struct ibss_rsn_peer *peer,
	598	const u8 *buf, size_t len)
	599	{
	600	int supp;
	601	u8 *tmp;
	602
	603	supp = ibss_rsn_eapol_dst_supp(buf, len);
	604	if (supp < 0)
	605	return -1;
	606
	607	tmp = os_malloc(len);
	608	if (tmp == NULL)
	609	return -1;
	610	os_memcpy(tmp, buf, len);
	611	if (supp) {
	612	wpa_printf(MSG_DEBUG, "RSN: IBSS RX EAPOL for Supplicant");
	613	wpa_sm_rx_eapol(peer->supp, peer->addr, tmp, len);
	614	} else {
615	wpa_printf(MSG_DEBUG, "RSN: IBSS RX EAPOL for Authenticator");
616	wpa_receive(ibss_rsn->auth_group, peer->auth, tmp, len);
617	}
618	os_free(tmp);
619
620	return 1;
621	}
622
623
624	int ibss_rsn_rx_eapol(struct ibss_rsn ibss_rsn, const u8 src_addr,
625	const u8 *buf, size_t len)
626	{
627	struct ibss_rsn_peer *peer;
628
78177a00 JM	629	if (ibss_rsn == NULL)
	630	return -1;
	631
fa7187bf AQ	632	peer = ibss_rsn_get_peer(ibss_rsn, src_addr);
	633	if (peer)
	634	return ibss_rsn_process_rx_eapol(ibss_rsn, peer, buf, len);
8be18440 JM	635
	636	if (ibss_rsn_eapol_dst_supp(buf, len) > 0) {
	637	/*
	638	* Create new IBSS peer based on an EAPOL message from the peer
	639	* Authenticator.
	640	*/
	641	if (ibss_rsn_start(ibss_rsn, src_addr) < 0)
	642	return -1;
	643	return ibss_rsn_process_rx_eapol(ibss_rsn, ibss_rsn->peers,
	644	buf, len);
	645	}
	646
	647	return 0;
	648	}
b9a2e577 JM	649
	650
	651	void ibss_rsn_set_psk(struct ibss_rsn ibss_rsn, const u8 psk)
	652	{
78177a00 JM	653	if (ibss_rsn == NULL)
78177a00 JM	654	return;
b9a2e577 JM	655	os_memcpy(ibss_rsn->psk, psk, PMK_LEN);
b9a2e577 JM	656	}