X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=libeap%2Fsrc%2Ffst%2Ffst_session.c;fp=libeap%2Fsrc%2Ffst%2Ffst_session.c;h=0000000000000000000000000000000000000000;hb=852a32fe63bc7d0271cca4df1bdb7634fd494b53;hp=76e2c78f4ff6c342f6c8b6de630bd5adc85fe2e0;hpb=88e34eecb5769da6526361b35df00fdbe823eac5;p=mech_eap.git

diff --git a/libeap/src/fst/fst_session.c b/libeap/src/fst/fst_session.c
deleted file mode 100644
index 76e2c78..0000000
--- a/libeap/src/fst/fst_session.c
+++ /dev/null
@@ -1,1611 +0,0 @@
-/*
- * FST module - FST Session implementation
- * Copyright (c) 2014, Qualcomm Atheros, Inc.
- *
- * 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 "common/defs.h"
-#include "fst/fst_internal.h"
-#include "fst/fst_defs.h"
-#include "fst/fst_ctrl_iface.h"
-#ifdef CONFIG_FST_TEST
-#include "fst/fst_ctrl_defs.h"
-#endif /* CONFIG_FST_TEST */
-
-#define US_80211_TU 1024
-
-#define US_TO_TU(m) ((m) * / US_80211_TU)
-#define TU_TO_US(m) ((m) * US_80211_TU)
-
-#define FST_LLT_SWITCH_IMMEDIATELY 0
-
-#define fst_printf_session(s, level, format, ...) \
-	fst_printf((level), "%u (0x%08x): [" MACSTR "," MACSTR "] :" format, \
-		   (s)->id, (s)->data.fsts_id, \
-		   MAC2STR((s)->data.old_peer_addr), \
-		   MAC2STR((s)->data.new_peer_addr), \
-		   ##__VA_ARGS__)
-
-#define fst_printf_siface(s, iface, level, format, ...) \
-	fst_printf_session((s), (level), "%s: " format, \
-			   fst_iface_get_name(iface), ##__VA_ARGS__)
-
-#define fst_printf_sframe(s, is_old, level, format, ...) \
-	fst_printf_siface((s), \
-		(is_old) ? (s)->data.old_iface : (s)->data.new_iface, \
-		(level), format, ##__VA_ARGS__)
-
-#define FST_LLT_MS_DEFAULT 50
-#define FST_ACTION_MAX_SUPPORTED   FST_ACTION_ON_CHANNEL_TUNNEL
-
-static const char * const fst_action_names[] = {
-	[FST_ACTION_SETUP_REQUEST]     = "Setup Request",
-	[FST_ACTION_SETUP_RESPONSE]    = "Setup Response",
-	[FST_ACTION_TEAR_DOWN]         = "Tear Down",
-	[FST_ACTION_ACK_REQUEST]       = "Ack Request",
-	[FST_ACTION_ACK_RESPONSE]      = "Ack Response",
-	[FST_ACTION_ON_CHANNEL_TUNNEL] = "On Channel Tunnel",
-};
-
-struct fst_session {
-	struct {
-		/* Session configuration that can be zeroed on reset */
-		u8 old_peer_addr[ETH_ALEN];
-		u8 new_peer_addr[ETH_ALEN];
-		struct fst_iface *new_iface;
-		struct fst_iface *old_iface;
-		u32 llt_ms;
-		u8 pending_setup_req_dlgt;
-		u32 fsts_id; /* FSTS ID, see spec, 8.4.2.147
-			      * Session Transition element */
-	} data;
-	/* Session object internal fields which won't be zeroed on reset */
-	struct dl_list global_sessions_lentry;
-	u32 id; /* Session object ID used to identify
-		 * specific session object */
-	struct fst_group *group;
-	enum fst_session_state state;
-	Boolean stt_armed;
-};
-
-static struct dl_list global_sessions_list;
-static u32 global_session_id = 0;
-
-#define foreach_fst_session(s) \
-	dl_list_for_each((s), &global_sessions_list, \
-			 struct fst_session, global_sessions_lentry)
-
-#define foreach_fst_session_safe(s, temp) \
-	dl_list_for_each_safe((s), (temp), &global_sessions_list, \
-			      struct fst_session, global_sessions_lentry)
-
-
-static void fst_session_global_inc_id(void)
-{
-	global_session_id++;
-	if (global_session_id == FST_INVALID_SESSION_ID)
-		global_session_id++;
-}
-
-
-int fst_session_global_init(void)
-{
-	dl_list_init(&global_sessions_list);
-	return 0;
-}
-
-
-void fst_session_global_deinit(void)
-{
-	WPA_ASSERT(dl_list_empty(&global_sessions_list));
-}
-
-
-static inline void fst_session_notify_ctrl(struct fst_session *s,
-					   enum fst_event_type event_type,
-					   union fst_event_extra *extra)
-{
-	foreach_fst_ctrl_call(on_event, event_type, NULL, s, extra);
-}
-
-
-static void fst_session_set_state(struct fst_session *s,
-				  enum fst_session_state state,
-				  union fst_session_state_switch_extra *extra)
-{
-	if (s->state != state) {
-		union fst_event_extra evext = {
-			.session_state = {
-				.old_state = s->state,
-				.new_state = state,
-			},
-		};
-
-		if (extra)
-			evext.session_state.extra = *extra;
-		fst_session_notify_ctrl(s, EVENT_FST_SESSION_STATE_CHANGED,
-					&evext);
-		fst_printf_session(s, MSG_INFO, "State: %s => %s",
-				   fst_session_state_name(s->state),
-				   fst_session_state_name(state));
-		s->state = state;
-	}
-}
-
-
-static u32 fst_find_free_session_id(void)
-{
-	u32 i, id = FST_INVALID_SESSION_ID;
-	struct fst_session *s;
-
-	for (i = 0; i < (u32) -1; i++) {
-		Boolean in_use = FALSE;
-
-		foreach_fst_session(s) {
-			if (s->id == global_session_id) {
-				fst_session_global_inc_id();
-				in_use = TRUE;
-				break;
-			}
-		}
-		if (!in_use) {
-			id = global_session_id;
-			fst_session_global_inc_id();
-			break;
-		}
-	}
-
-	return id;
-}
-
-
-static void fst_session_timeout_handler(void *eloop_data, void *user_ctx)
-{
-	struct fst_session *s = user_ctx;
-	union fst_session_state_switch_extra extra = {
-		.to_initial = {
-			.reason = REASON_STT,
-		},
-	};
-
-	fst_printf_session(s, MSG_WARNING, "Session State Timeout");
-	fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &extra);
-}
-
-
-static void fst_session_stt_arm(struct fst_session *s)
-{
-	/* Action frames sometimes get delayed. Use relaxed timeout (2*) */
-	eloop_register_timeout(0, 2 * TU_TO_US(FST_DEFAULT_SESSION_TIMEOUT_TU),
-			       fst_session_timeout_handler, NULL, s);
-	s->stt_armed = TRUE;
-}
-
-
-static void fst_session_stt_disarm(struct fst_session *s)
-{
-	if (s->stt_armed) {
-		eloop_cancel_timeout(fst_session_timeout_handler, NULL, s);
-		s->stt_armed = FALSE;
-	}
-}
-
-
-static Boolean fst_session_is_in_transition(struct fst_session *s)
-{
-	/* See spec, 10.32.2.2  Transitioning between states */
-	return s->stt_armed;
-}
-
-
-static int fst_session_is_in_progress(struct fst_session *s)
-{
-	return s->state != FST_SESSION_STATE_INITIAL;
-}
-
-
-static int fst_session_is_ready_pending(struct fst_session *s)
-{
-	return s->state == FST_SESSION_STATE_SETUP_COMPLETION &&
-		fst_session_is_in_transition(s);
-}
-
-
-static int fst_session_is_ready(struct fst_session *s)
-{
-	return s->state == FST_SESSION_STATE_SETUP_COMPLETION &&
-		!fst_session_is_in_transition(s);
-}
-
-
-static int fst_session_is_switch_requested(struct fst_session *s)
-{
-	return s->state == FST_SESSION_STATE_TRANSITION_DONE &&
-		fst_session_is_in_transition(s);
-}
-
-
-static struct fst_session *
-fst_find_session_in_progress(const u8 *peer_addr, struct fst_group *g)
-{
-	struct fst_session *s;
-
-	foreach_fst_session(s) {
-		if (s->group == g &&
-		    (os_memcmp(s->data.old_peer_addr, peer_addr,
-			       ETH_ALEN) == 0 ||
-		     os_memcmp(s->data.new_peer_addr, peer_addr,
-			       ETH_ALEN) == 0) &&
-		    fst_session_is_in_progress(s))
-			return s;
-	}
-
-	return NULL;
-}
-
-
-static void fst_session_reset_ex(struct fst_session *s, enum fst_reason reason)
-{
-	union fst_session_state_switch_extra evext = {
-		.to_initial = {
-			.reason = reason,
-		},
-	};
-
-	if (s->state == FST_SESSION_STATE_SETUP_COMPLETION ||
-	    s->state == FST_SESSION_STATE_TRANSITION_DONE)
-		fst_session_tear_down_setup(s);
-	fst_session_stt_disarm(s);
-	os_memset(&s->data, 0, sizeof(s->data));
-	fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-}
-
-
-static int fst_session_send_action(struct fst_session *s, Boolean old_iface,
-				   const void *payload, size_t size,
-				   const struct wpabuf *extra_buf)
-{
-	size_t len;
-	int res;
-	struct wpabuf *buf;
-	u8 action;
-	struct fst_iface *iface =
-		old_iface ? s->data.old_iface : s->data.new_iface;
-
-	WPA_ASSERT(payload != NULL);
-	WPA_ASSERT(size != 0);
-
-	action = *(const u8 *) payload;
-
-	WPA_ASSERT(action <= FST_ACTION_MAX_SUPPORTED);
-
-	if (!iface) {
-		fst_printf_session(s, MSG_ERROR,
-				   "no %s interface for FST Action '%s' sending",
-				   old_iface ? "old" : "new",
-				   fst_action_names[action]);
-		return -1;
-	}
-
-	len = sizeof(u8) /* category */ + size;
-	if (extra_buf)
-		len += wpabuf_size(extra_buf);
-
-	buf = wpabuf_alloc(len);
-	if (!buf) {
-		fst_printf_session(s, MSG_ERROR,
-				   "cannot allocate buffer of %zu bytes for FST Action '%s' sending",
-				   len, fst_action_names[action]);
-		return -1;
-	}
-
-	wpabuf_put_u8(buf, WLAN_ACTION_FST);
-	wpabuf_put_data(buf, payload, size);
-	if (extra_buf)
-		wpabuf_put_buf(buf, extra_buf);
-
-	res = fst_iface_send_action(iface,
-				    old_iface ? s->data.old_peer_addr :
-				    s->data.new_peer_addr, buf);
-	if (res < 0)
-		fst_printf_siface(s, iface, MSG_ERROR,
-				  "failed to send FST Action '%s'",
-				  fst_action_names[action]);
-	else
-		fst_printf_siface(s, iface, MSG_DEBUG, "FST Action '%s' sent",
-				  fst_action_names[action]);
-	wpabuf_free(buf);
-
-	return res;
-}
-
-
-static int fst_session_send_tear_down(struct fst_session *s)
-{
-	struct fst_tear_down td;
-	int res;
-
-	if (!fst_session_is_in_progress(s)) {
-		fst_printf_session(s, MSG_ERROR, "No FST setup to tear down");
-		return -1;
-	}
-
-	WPA_ASSERT(s->data.old_iface != NULL);
-	WPA_ASSERT(s->data.new_iface != NULL);
-
-	os_memset(&td, 0, sizeof(td));
-
-	td.action = FST_ACTION_TEAR_DOWN;
-	td.fsts_id = host_to_le32(s->data.fsts_id);
-
-	res = fst_session_send_action(s, TRUE, &td, sizeof(td), NULL);
-	if (!res)
-		fst_printf_sframe(s, TRUE, MSG_INFO, "FST TearDown sent");
-	else
-		fst_printf_sframe(s, TRUE, MSG_ERROR,
-				  "failed to send FST TearDown");
-
-	return res;
-}
-
-
-static void fst_session_handle_setup_request(struct fst_iface *iface,
-					     const struct ieee80211_mgmt *mgmt,
-					     size_t frame_len)
-{
-	struct fst_session *s;
-	const struct fst_setup_req *req;
-	struct fst_iface *new_iface = NULL;
-	struct fst_group *g;
-	u8 new_iface_peer_addr[ETH_ALEN];
-	size_t plen;
-
-	if (frame_len < IEEE80211_HDRLEN + 1 + sizeof(*req))  {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "FST Request dropped: too short (%zu < %zu)",
-				 frame_len,
-				 IEEE80211_HDRLEN + 1 + sizeof(*req));
-		return;
-	}
-	plen = frame_len - IEEE80211_HDRLEN - 1;
-	req = (const struct fst_setup_req *)
-		(((const u8 *) mgmt) + IEEE80211_HDRLEN + 1);
-	if (req->stie.element_id != WLAN_EID_SESSION_TRANSITION ||
-	    req->stie.length < 11) {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "FST Request dropped: invalid STIE");
-		return;
-	}
-
-	if (req->stie.new_band_id == req->stie.old_band_id) {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "FST Request dropped: new and old band IDs are the same");
-		return;
-	}
-
-	g = fst_iface_get_group(iface);
-
-	if (plen > sizeof(*req)) {
-		fst_iface_update_mb_ie(iface, mgmt->sa, (const u8 *) (req + 1),
-				       plen - sizeof(*req));
-		fst_printf_iface(iface, MSG_INFO,
-				 "FST Request: MB IEs updated for " MACSTR,
-				 MAC2STR(mgmt->sa));
-	}
-
-	new_iface = fst_group_get_peer_other_connection(iface, mgmt->sa,
-							req->stie.new_band_id,
-							new_iface_peer_addr);
-	if (!new_iface) {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "FST Request dropped: new iface not found");
-		return;
-	}
-	fst_printf_iface(iface, MSG_INFO,
-			 "FST Request: new iface (%s:" MACSTR ") found",
-			 fst_iface_get_name(new_iface),
-			 MAC2STR(new_iface_peer_addr));
-
-	s = fst_find_session_in_progress(mgmt->sa, g);
-	if (s) {
-		union fst_session_state_switch_extra evext = {
-			.to_initial = {
-				.reason = REASON_SETUP,
-			},
-		};
-
-		/*
-		 * 10.32.2.2  Transitioning between states:
-		 * Upon receipt of an FST Setup Request frame, the responder
-		 * shall respond with an FST Setup Response frame unless it has
-		 * a pending FST Setup Request frame addressed to the initiator
-		 * and the responder has a numerically larger MAC address than
-		 * the initiator’s MAC address, in which case, the responder
-		 * shall delete the received FST Setup Request.
-		 */
-		if (fst_session_is_ready_pending(s) &&
-		    /* waiting for Setup Response */
-		    os_memcmp(mgmt->da, mgmt->sa, ETH_ALEN) > 0) {
-			fst_printf_session(s, MSG_WARNING,
-					   "FST Request dropped due to MAC comparison (our MAC is "
-					   MACSTR ")",
-					   MAC2STR(mgmt->da));
-			return;
-		}
-
-		/*
-		 * State is SETUP_COMPLETION (either in transition or not) or
-		 * TRANSITION_DONE (in transition).
-		 * Setup Request arriving in this state could mean:
-		 * 1. peer sent it before receiving our Setup Request (race
-		 *    condition)
-		 * 2. peer didn't receive our Setup Response. Peer is retrying
-		 *    after STT timeout
-		 * 3. peer's FST state machines are out of sync due to some
-		 *    other reason
-		 *
-		 * We will reset our session and create a new one instead.
-		 */
-
-		fst_printf_session(s, MSG_WARNING,
-			"resetting due to FST request");
-
-		/*
-		 * If FST Setup Request arrived with the same FSTS ID as one we
-		 * initialized before, there's no need to tear down the session.
-		 * Moreover, as FSTS ID is the same, the other side will
-		 * associate this tear down with the session it initiated that
-		 * will break the sync.
-		 */
-		if (le_to_host32(req->stie.fsts_id) != s->data.fsts_id)
-			fst_session_send_tear_down(s);
-		else
-			fst_printf_session(s, MSG_WARNING,
-					   "Skipping TearDown as the FST request has the same FSTS ID as initiated");
-		fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-		fst_session_stt_disarm(s);
-	}
-
-	s = fst_session_create(g);
-	if (!s) {
-		fst_printf(MSG_WARNING,
-			   "FST Request dropped: cannot create session for %s and %s",
-			   fst_iface_get_name(iface),
-			   fst_iface_get_name(new_iface));
-		return;
-	}
-
-	fst_session_set_iface(s, iface, TRUE);
-	fst_session_set_peer_addr(s, mgmt->sa, TRUE);
-	fst_session_set_iface(s, new_iface, FALSE);
-	fst_session_set_peer_addr(s, new_iface_peer_addr, FALSE);
-	fst_session_set_llt(s, FST_LLT_VAL_TO_MS(le_to_host32(req->llt)));
-	s->data.pending_setup_req_dlgt = req->dialog_token;
-	s->data.fsts_id = le_to_host32(req->stie.fsts_id);
-
-	fst_session_stt_arm(s);
-
-	fst_session_notify_ctrl(s, EVENT_FST_SETUP, NULL);
-
-	fst_session_set_state(s, FST_SESSION_STATE_SETUP_COMPLETION, NULL);
-}
-
-
-static void fst_session_handle_setup_response(struct fst_session *s,
-					      struct fst_iface *iface,
-					      const struct ieee80211_mgmt *mgmt,
-					      size_t frame_len)
-{
-	const struct fst_setup_res *res;
-	size_t plen = frame_len - IEEE80211_HDRLEN - 1;
-	enum hostapd_hw_mode hw_mode;
-	u8 channel;
-	union fst_session_state_switch_extra evext = {
-		.to_initial = {
-			.reject_code = 0,
-		},
-	};
-
-	if (iface != s->data.old_iface) {
-		fst_printf_session(s, MSG_WARNING,
-				   "FST Response dropped: %s is not the old iface",
-				   fst_iface_get_name(iface));
-		return;
-	}
-
-	if (!fst_session_is_ready_pending(s)) {
-		fst_printf_session(s, MSG_WARNING,
-				   "FST Response dropped due to wrong state: %s",
-				   fst_session_state_name(s->state));
-		return;
-	}
-
-	if (plen < sizeof(*res)) {
-		fst_printf_session(s, MSG_WARNING,
-				   "Too short FST Response dropped");
-		return;
-	}
-	res = (const struct fst_setup_res *)
-		(((const u8 *) mgmt) + IEEE80211_HDRLEN + 1);
-	if (res->stie.element_id != WLAN_EID_SESSION_TRANSITION ||
-	    res->stie.length < 11) {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "FST Response dropped: invalid STIE");
-		return;
-	}
-
-	if (res->dialog_token != s->data.pending_setup_req_dlgt)  {
-		fst_printf_session(s, MSG_WARNING,
-				   "FST Response dropped due to wrong dialog token (%u != %u)",
-				   s->data.pending_setup_req_dlgt,
-				   res->dialog_token);
-		return;
-	}
-
-	if (res->status_code == WLAN_STATUS_SUCCESS &&
-	    le_to_host32(res->stie.fsts_id) != s->data.fsts_id) {
-		fst_printf_session(s, MSG_WARNING,
-				   "FST Response dropped due to wrong FST Session ID (%u)",
-				   le_to_host32(res->stie.fsts_id));
-		return;
-	}
-
-	fst_session_stt_disarm(s);
-
-	if (res->status_code != WLAN_STATUS_SUCCESS) {
-		/*
-		 * 10.32.2.2  Transitioning between states
-		 * The initiator shall set the STT to the value of the
-		 * FSTSessionTimeOut field at ... and at each ACK frame sent in
-		 * response to a received FST Setup Response with the Status
-		 * Code field equal to PENDING_ADMITTING_FST_SESSION or
-		 * PENDING_GAP_IN_BA_WINDOW.
-		 */
-		evext.to_initial.reason = REASON_REJECT;
-		evext.to_initial.reject_code = res->status_code;
-		evext.to_initial.initiator = FST_INITIATOR_REMOTE;
-		fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-		fst_printf_session(s, MSG_WARNING,
-				   "FST Setup rejected by remote side with status %u",
-				   res->status_code);
-		return;
-	}
-
-	fst_iface_get_channel_info(s->data.new_iface, &hw_mode, &channel);
-
-	if (fst_hw_mode_to_band(hw_mode) != res->stie.new_band_id) {
-		evext.to_initial.reason = REASON_ERROR_PARAMS;
-		fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-		fst_printf_session(s, MSG_WARNING,
-				   "invalid FST Setup parameters");
-		fst_session_tear_down_setup(s);
-		return;
-	}
-
-	fst_printf_session(s, MSG_INFO,
-			   "%s: FST Setup established for %s (llt=%u)",
-			   fst_iface_get_name(s->data.old_iface),
-			   fst_iface_get_name(s->data.new_iface),
-			   s->data.llt_ms);
-
-	fst_session_notify_ctrl(s, EVENT_FST_ESTABLISHED, NULL);
-
-	if (s->data.llt_ms == FST_LLT_SWITCH_IMMEDIATELY)
-		fst_session_initiate_switch(s);
-}
-
-
-static void fst_session_handle_tear_down(struct fst_session *s,
-					 struct fst_iface *iface,
-					 const struct ieee80211_mgmt *mgmt,
-					 size_t frame_len)
-{
-	const struct fst_tear_down *td;
-	size_t plen = frame_len - IEEE80211_HDRLEN - 1;
-	union fst_session_state_switch_extra evext = {
-		.to_initial = {
-			.reason = REASON_TEARDOWN,
-			.initiator = FST_INITIATOR_REMOTE,
-		},
-	};
-
-	if (plen < sizeof(*td)) {
-		fst_printf_session(s, MSG_WARNING,
-				   "Too short FST Tear Down dropped");
-		return;
-	}
-	td = (const struct fst_tear_down *)
-		(((const u8 *) mgmt) + IEEE80211_HDRLEN + 1);
-
-	if (le_to_host32(td->fsts_id) != s->data.fsts_id) {
-		fst_printf_siface(s, iface, MSG_WARNING,
-				  "tear down for wrong FST Setup ID (%u)",
-				  le_to_host32(td->fsts_id));
-		return;
-	}
-
-	fst_session_stt_disarm(s);
-
-	fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-}
-
-
-static void fst_session_handle_ack_request(struct fst_session *s,
-					   struct fst_iface *iface,
-					   const struct ieee80211_mgmt *mgmt,
-					   size_t frame_len)
-{
-	const struct fst_ack_req *req;
-	size_t plen = frame_len - IEEE80211_HDRLEN - 1;
-	struct fst_ack_res res;
-	union fst_session_state_switch_extra evext = {
-		.to_initial = {
-			.reason = REASON_SWITCH,
-			.initiator = FST_INITIATOR_REMOTE,
-		},
-	};
-
-	if (!fst_session_is_ready(s) && !fst_session_is_switch_requested(s)) {
-		fst_printf_siface(s, iface, MSG_ERROR,
-				  "cannot initiate switch due to wrong session state (%s)",
-				  fst_session_state_name(s->state));
-		return;
-	}
-
-	WPA_ASSERT(s->data.new_iface != NULL);
-
-	if (iface != s->data.new_iface) {
-		fst_printf_siface(s, iface, MSG_ERROR,
-				  "Ack received on wrong interface");
-		return;
-	}
-
-	if (plen < sizeof(*req)) {
-		fst_printf_session(s, MSG_WARNING,
-				   "Too short FST Ack Request dropped");
-		return;
-	}
-	req = (const struct fst_ack_req *)
-		(((const u8 *) mgmt) + IEEE80211_HDRLEN + 1);
-
-	if (le_to_host32(req->fsts_id) != s->data.fsts_id) {
-		fst_printf_siface(s, iface, MSG_WARNING,
-				  "Ack for wrong FST Setup ID (%u)",
-				  le_to_host32(req->fsts_id));
-		return;
-	}
-
-	os_memset(&res, 0, sizeof(res));
-
-	res.action = FST_ACTION_ACK_RESPONSE;
-	res.dialog_token = req->dialog_token;
-	res.fsts_id = req->fsts_id;
-
-	if (!fst_session_send_action(s, FALSE, &res, sizeof(res), NULL)) {
-		fst_printf_sframe(s, FALSE, MSG_INFO, "FST Ack Response sent");
-		fst_session_stt_disarm(s);
-		fst_session_set_state(s, FST_SESSION_STATE_TRANSITION_DONE,
-				      NULL);
-		fst_session_set_state(s, FST_SESSION_STATE_TRANSITION_CONFIRMED,
-				      NULL);
-		fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-	}
-}
-
-
-static void
-fst_session_handle_ack_response(struct fst_session *s,
-				struct fst_iface *iface,
-				const struct ieee80211_mgmt *mgmt,
-				size_t frame_len)
-{
-	const struct fst_ack_res *res;
-	size_t plen = frame_len - IEEE80211_HDRLEN - 1;
-	union fst_session_state_switch_extra evext = {
-		.to_initial = {
-			.reason = REASON_SWITCH,
-			.initiator = FST_INITIATOR_LOCAL,
-		},
-	};
-
-	if (!fst_session_is_switch_requested(s)) {
-		fst_printf_siface(s, iface, MSG_ERROR,
-				  "Ack Response in inappropriate session state (%s)",
-				  fst_session_state_name(s->state));
-		return;
-	}
-
-	WPA_ASSERT(s->data.new_iface != NULL);
-
-	if (iface != s->data.new_iface) {
-		fst_printf_siface(s, iface, MSG_ERROR,
-				  "Ack response received on wrong interface");
-		return;
-	}
-
-	if (plen < sizeof(*res)) {
-		fst_printf_session(s, MSG_WARNING,
-				   "Too short FST Ack Response dropped");
-		return;
-	}
-	res = (const struct fst_ack_res *)
-		(((const u8 *) mgmt) + IEEE80211_HDRLEN + 1);
-
-	if (le_to_host32(res->fsts_id) != s->data.fsts_id) {
-		fst_printf_siface(s, iface, MSG_ERROR,
-				  "Ack response for wrong FST Setup ID (%u)",
-				  le_to_host32(res->fsts_id));
-		return;
-	}
-
-	fst_session_set_state(s, FST_SESSION_STATE_TRANSITION_CONFIRMED, NULL);
-	fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-
-	fst_session_stt_disarm(s);
-}
-
-
-struct fst_session * fst_session_create(struct fst_group *g)
-{
-	struct fst_session *s;
-	u32 id;
-
-	WPA_ASSERT(!is_zero_ether_addr(own_addr));
-
-	id = fst_find_free_session_id();
-	if (id == FST_INVALID_SESSION_ID) {
-		fst_printf(MSG_ERROR, "Cannot assign new session ID");
-		return NULL;
-	}
-
-	s = os_zalloc(sizeof(*s));
-	if (!s) {
-		fst_printf(MSG_ERROR, "Cannot allocate new session object");
-		return NULL;
-	}
-
-	s->id = id;
-	s->group = g;
-	s->state = FST_SESSION_STATE_INITIAL;
-
-	s->data.llt_ms = FST_LLT_MS_DEFAULT;
-
-	fst_printf(MSG_INFO, "Session %u created", s->id);
-
-	dl_list_add_tail(&global_sessions_list, &s->global_sessions_lentry);
-
-	foreach_fst_ctrl_call(on_session_added, s);
-
-	return s;
-}
-
-
-void fst_session_set_iface(struct fst_session *s, struct fst_iface *iface,
-			   Boolean is_old)
-{
-	if (is_old)
-		s->data.old_iface = iface;
-	else
-		s->data.new_iface = iface;
-
-}
-
-
-void fst_session_set_llt(struct fst_session *s, u32 llt)
-{
-	s->data.llt_ms = llt;
-}
-
-
-void fst_session_set_peer_addr(struct fst_session *s, const u8 *addr,
-			       Boolean is_old)
-{
-	u8 *a = is_old ? s->data.old_peer_addr : s->data.new_peer_addr;
-
-	os_memcpy(a, addr, ETH_ALEN);
-}
-
-
-int fst_session_initiate_setup(struct fst_session *s)
-{
-	struct fst_setup_req req;
-	int res;
-	u32 fsts_id;
-	u8 dialog_token;
-	struct fst_session *_s;
-
-	if (fst_session_is_in_progress(s)) {
-		fst_printf_session(s, MSG_ERROR, "Session in progress");
-		return -EINVAL;
-	}
-
-	if (is_zero_ether_addr(s->data.old_peer_addr)) {
-		fst_printf_session(s, MSG_ERROR, "No old peer MAC address");
-		return -EINVAL;
-	}
-
-	if (is_zero_ether_addr(s->data.new_peer_addr)) {
-		fst_printf_session(s, MSG_ERROR, "No new peer MAC address");
-		return -EINVAL;
-	}
-
-	if (!s->data.old_iface) {
-		fst_printf_session(s, MSG_ERROR, "No old interface defined");
-		return -EINVAL;
-	}
-
-	if (!s->data.new_iface) {
-		fst_printf_session(s, MSG_ERROR, "No new interface defined");
-		return -EINVAL;
-	}
-
-	if (s->data.new_iface == s->data.old_iface) {
-		fst_printf_session(s, MSG_ERROR,
-				   "Same interface set as old and new");
-		return -EINVAL;
-	}
-
-	if (!fst_iface_is_connected(s->data.old_iface, s->data.old_peer_addr,
-				    FALSE)) {
-		fst_printf_session(s, MSG_ERROR,
-				   "The preset old peer address is not connected");
-		return -EINVAL;
-	}
-
-	if (!fst_iface_is_connected(s->data.new_iface, s->data.new_peer_addr,
-				    FALSE)) {
-		fst_printf_session(s, MSG_ERROR,
-				   "The preset new peer address is not connected");
-		return -EINVAL;
-	}
-
-	_s = fst_find_session_in_progress(s->data.old_peer_addr, s->group);
-	if (_s) {
-		fst_printf_session(s, MSG_ERROR,
-				   "There is another session in progress (old): %u",
-				   _s->id);
-		return -EINVAL;
-	}
-
-	_s = fst_find_session_in_progress(s->data.new_peer_addr, s->group);
-	if (_s) {
-		fst_printf_session(s, MSG_ERROR,
-				   "There is another session in progress (new): %u",
-				   _s->id);
-		return -EINVAL;
-	}
-
-	dialog_token = fst_group_assign_dialog_token(s->group);
-	fsts_id = fst_group_assign_fsts_id(s->group);
-
-	os_memset(&req, 0, sizeof(req));
-
-	fst_printf_siface(s, s->data.old_iface, MSG_INFO,
-		"initiating FST setup for %s (llt=%u ms)",
-		fst_iface_get_name(s->data.new_iface), s->data.llt_ms);
-
-	req.action = FST_ACTION_SETUP_REQUEST;
-	req.dialog_token = dialog_token;
-	req.llt = host_to_le32(FST_LLT_MS_TO_VAL(s->data.llt_ms));
-	/* 8.4.2.147 Session Transition element */
-	req.stie.element_id = WLAN_EID_SESSION_TRANSITION;
-	req.stie.length = sizeof(req.stie) - 2;
-	req.stie.fsts_id = host_to_le32(fsts_id);
-	req.stie.session_control = SESSION_CONTROL(SESSION_TYPE_BSS, 0);
-
-	req.stie.new_band_id = fst_iface_get_band_id(s->data.new_iface);
-	req.stie.new_band_op = 1;
-	req.stie.new_band_setup = 0;
-
-	req.stie.old_band_id = fst_iface_get_band_id(s->data.old_iface);
-	req.stie.old_band_op = 1;
-	req.stie.old_band_setup = 0;
-
-	res = fst_session_send_action(s, TRUE, &req, sizeof(req),
-				      fst_iface_get_mbie(s->data.old_iface));
-	if (!res) {
-		s->data.fsts_id = fsts_id;
-		s->data.pending_setup_req_dlgt = dialog_token;
-		fst_printf_sframe(s, TRUE, MSG_INFO, "FST Setup Request sent");
-		fst_session_set_state(s, FST_SESSION_STATE_SETUP_COMPLETION,
-				      NULL);
-
-		fst_session_stt_arm(s);
-	}
-
-	return res;
-}
-
-
-int fst_session_respond(struct fst_session *s, u8 status_code)
-{
-	struct fst_setup_res res;
-	enum hostapd_hw_mode hw_mode;
-	u8 channel;
-
-	if (!fst_session_is_ready_pending(s)) {
-		fst_printf_session(s, MSG_ERROR, "incorrect state: %s",
-				   fst_session_state_name(s->state));
-		return -EINVAL;
-	}
-
-	if (is_zero_ether_addr(s->data.old_peer_addr)) {
-		fst_printf_session(s, MSG_ERROR, "No peer MAC address");
-		return -EINVAL;
-	}
-
-	if (!s->data.old_iface) {
-		fst_printf_session(s, MSG_ERROR, "No old interface defined");
-		return -EINVAL;
-	}
-
-	if (!s->data.new_iface) {
-		fst_printf_session(s, MSG_ERROR, "No new interface defined");
-		return -EINVAL;
-	}
-
-	if (s->data.new_iface == s->data.old_iface) {
-		fst_printf_session(s, MSG_ERROR,
-				   "Same interface set as old and new");
-		return -EINVAL;
-	}
-
-	if (!fst_iface_is_connected(s->data.old_iface,
-				    s->data.old_peer_addr, FALSE)) {
-		fst_printf_session(s, MSG_ERROR,
-				   "The preset peer address is not in the peer list");
-		return -EINVAL;
-	}
-
-	fst_session_stt_disarm(s);
-
-	os_memset(&res, 0, sizeof(res));
-
-	res.action = FST_ACTION_SETUP_RESPONSE;
-	res.dialog_token = s->data.pending_setup_req_dlgt;
-	res.status_code = status_code;
-
-	res.stie.element_id = WLAN_EID_SESSION_TRANSITION;
-	res.stie.length = sizeof(res.stie) - 2;
-
-	if (status_code == WLAN_STATUS_SUCCESS) {
-		res.stie.fsts_id = host_to_le32(s->data.fsts_id);
-		res.stie.session_control = SESSION_CONTROL(SESSION_TYPE_BSS, 0);
-
-		fst_iface_get_channel_info(s->data.new_iface, &hw_mode,
-					   &channel);
-		res.stie.new_band_id = fst_hw_mode_to_band(hw_mode);
-		res.stie.new_band_op = 1;
-		res.stie.new_band_setup = 0;
-
-		fst_iface_get_channel_info(s->data.old_iface, &hw_mode,
-					   &channel);
-		res.stie.old_band_id = fst_hw_mode_to_band(hw_mode);
-		res.stie.old_band_op = 1;
-		res.stie.old_band_setup = 0;
-
-		fst_printf_session(s, MSG_INFO,
-				   "%s: FST Setup Request accepted for %s (llt=%u)",
-				   fst_iface_get_name(s->data.old_iface),
-				   fst_iface_get_name(s->data.new_iface),
-				   s->data.llt_ms);
-	} else {
-		fst_printf_session(s, MSG_WARNING,
-				   "%s: FST Setup Request rejected with code %d",
-				   fst_iface_get_name(s->data.old_iface),
-				   status_code);
-	}
-
-	if (fst_session_send_action(s, TRUE, &res, sizeof(res),
-				    fst_iface_get_mbie(s->data.old_iface))) {
-		fst_printf_sframe(s, TRUE, MSG_ERROR,
-				  "cannot send FST Setup Response with code %d",
-				  status_code);
-		return -EINVAL;
-	}
-
-	fst_printf_sframe(s, TRUE, MSG_INFO, "FST Setup Response sent");
-
-	if (status_code != WLAN_STATUS_SUCCESS) {
-		union fst_session_state_switch_extra evext = {
-			.to_initial = {
-				.reason = REASON_REJECT,
-				.reject_code = status_code,
-				.initiator = FST_INITIATOR_LOCAL,
-			},
-		};
-		fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-	}
-
-	return 0;
-}
-
-
-int fst_session_initiate_switch(struct fst_session *s)
-{
-	struct fst_ack_req req;
-	int res;
-	u8 dialog_token;
-
-	if (!fst_session_is_ready(s)) {
-		fst_printf_session(s, MSG_ERROR,
-				   "cannot initiate switch due to wrong setup state (%d)",
-				   s->state);
-		return -1;
-	}
-
-	dialog_token = fst_group_assign_dialog_token(s->group);
-
-	WPA_ASSERT(s->data.new_iface != NULL);
-	WPA_ASSERT(s->data.old_iface != NULL);
-
-	fst_printf_session(s, MSG_INFO, "initiating FST switch: %s => %s",
-			   fst_iface_get_name(s->data.old_iface),
-			   fst_iface_get_name(s->data.new_iface));
-
-	os_memset(&req, 0, sizeof(req));
-
-	req.action = FST_ACTION_ACK_REQUEST;
-	req.dialog_token = dialog_token;
-	req.fsts_id = host_to_le32(s->data.fsts_id);
-
-	res = fst_session_send_action(s, FALSE, &req, sizeof(req), NULL);
-	if (!res) {
-		fst_printf_sframe(s, FALSE, MSG_INFO, "FST Ack Request sent");
-		fst_session_set_state(s, FST_SESSION_STATE_TRANSITION_DONE,
-				      NULL);
-		fst_session_stt_arm(s);
-	} else {
-		fst_printf_sframe(s, FALSE, MSG_ERROR,
-				  "Cannot send FST Ack Request");
-	}
-
-	return res;
-}
-
-
-void fst_session_handle_action(struct fst_session *s,
-			       struct fst_iface *iface,
-			       const struct ieee80211_mgmt *mgmt,
-			       size_t frame_len)
-{
-	switch (mgmt->u.action.u.fst_action.action) {
-	case FST_ACTION_SETUP_REQUEST:
-		WPA_ASSERT(0);
-		break;
-	case FST_ACTION_SETUP_RESPONSE:
-		fst_session_handle_setup_response(s, iface, mgmt, frame_len);
-		break;
-	case FST_ACTION_TEAR_DOWN:
-		fst_session_handle_tear_down(s, iface, mgmt, frame_len);
-		break;
-	case FST_ACTION_ACK_REQUEST:
-		fst_session_handle_ack_request(s, iface, mgmt, frame_len);
-		break;
-	case FST_ACTION_ACK_RESPONSE:
-		fst_session_handle_ack_response(s, iface, mgmt, frame_len);
-		break;
-	case FST_ACTION_ON_CHANNEL_TUNNEL:
-	default:
-		fst_printf_sframe(s, FALSE, MSG_ERROR,
-				  "Unsupported FST Action frame");
-		break;
-	}
-}
-
-
-int fst_session_tear_down_setup(struct fst_session *s)
-{
-	int res;
-	union fst_session_state_switch_extra evext = {
-		.to_initial = {
-			.reason = REASON_TEARDOWN,
-			.initiator = FST_INITIATOR_LOCAL,
-		},
-	};
-
-	res = fst_session_send_tear_down(s);
-
-	fst_session_set_state(s, FST_SESSION_STATE_INITIAL, &evext);
-
-	return res;
-}
-
-
-void fst_session_reset(struct fst_session *s)
-{
-	fst_session_reset_ex(s, REASON_RESET);
-}
-
-
-void fst_session_delete(struct fst_session *s)
-{
-	fst_printf(MSG_INFO, "Session %u deleted", s->id);
-	dl_list_del(&s->global_sessions_lentry);
-	foreach_fst_ctrl_call(on_session_removed, s);
-	os_free(s);
-}
-
-
-struct fst_group * fst_session_get_group(struct fst_session *s)
-{
-	return s->group;
-}
-
-
-struct fst_iface * fst_session_get_iface(struct fst_session *s, Boolean is_old)
-{
-	return is_old ? s->data.old_iface : s->data.new_iface;
-}
-
-
-u32 fst_session_get_id(struct fst_session *s)
-{
-	return s->id;
-}
-
-
-const u8 * fst_session_get_peer_addr(struct fst_session *s, Boolean is_old)
-{
-	return is_old ? s->data.old_peer_addr : s->data.new_peer_addr;
-}
-
-
-u32 fst_session_get_llt(struct fst_session *s)
-{
-	return s->data.llt_ms;
-}
-
-
-enum fst_session_state fst_session_get_state(struct fst_session *s)
-{
-	return s->state;
-}
-
-
-struct fst_session * fst_session_get_by_id(u32 id)
-{
-	struct fst_session *s;
-
-	foreach_fst_session(s) {
-		if (id == s->id)
-			return s;
-	}
-
-	return NULL;
-}
-
-
-void fst_session_enum(struct fst_group *g, fst_session_enum_clb clb, void *ctx)
-{
-	struct fst_session *s;
-
-	foreach_fst_session(s) {
-		if (!g || s->group == g)
-			clb(s->group, s, ctx);
-	}
-}
-
-
-void fst_session_on_action_rx(struct fst_iface *iface,
-			      const struct ieee80211_mgmt *mgmt,
-			      size_t len)
-{
-	struct fst_session *s;
-
-	if (len < IEEE80211_HDRLEN + 2 ||
-	    mgmt->u.action.category != WLAN_ACTION_FST) {
-		fst_printf_iface(iface, MSG_ERROR,
-				 "invalid Action frame received");
-		return;
-	}
-
-	if (mgmt->u.action.u.fst_action.action <= FST_ACTION_MAX_SUPPORTED) {
-		fst_printf_iface(iface, MSG_DEBUG,
-				 "FST Action '%s' received!",
-				 fst_action_names[mgmt->u.action.u.fst_action.action]);
-	} else {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "unknown FST Action (%u) received!",
-				 mgmt->u.action.u.fst_action.action);
-		return;
-	}
-
-	if (mgmt->u.action.u.fst_action.action == FST_ACTION_SETUP_REQUEST) {
-		fst_session_handle_setup_request(iface, mgmt, len);
-		return;
-	}
-
-	s = fst_find_session_in_progress(mgmt->sa, fst_iface_get_group(iface));
-	if (s) {
-		fst_session_handle_action(s, iface, mgmt, len);
-	} else {
-		fst_printf_iface(iface, MSG_WARNING,
-				 "FST Action '%s' dropped: no session in progress found",
-				 fst_action_names[mgmt->u.action.u.fst_action.action]);
-	}
-}
-
-
-int fst_session_set_str_ifname(struct fst_session *s, const char *ifname,
-			       Boolean is_old)
-{
-	struct fst_group *g = fst_session_get_group(s);
-	struct fst_iface *i;
-
-	i = fst_group_get_iface_by_name(g, ifname);
-	if (!i) {
-		fst_printf_session(s, MSG_WARNING,
-				   "Cannot set iface %s: no such iface within group '%s'",
-				   ifname, fst_group_get_id(g));
-		return -1;
-	}
-
-	fst_session_set_iface(s, i, is_old);
-
-	return 0;
-}
-
-
-int fst_session_set_str_peer_addr(struct fst_session *s, const char *mac,
-				  Boolean is_old)
-{
-	u8 peer_addr[ETH_ALEN];
-	int res = fst_read_peer_addr(mac, peer_addr);
-
-	if (res)
-		return res;
-
-	fst_session_set_peer_addr(s, peer_addr, is_old);
-
-	return 0;
-}
-
-
-int fst_session_set_str_llt(struct fst_session *s, const char *llt_str)
-{
-	char *endp;
-	long int llt = strtol(llt_str, &endp, 0);
-
-	if (*endp || llt < 0 || (unsigned long int) llt > FST_MAX_LLT_MS) {
-		fst_printf_session(s, MSG_WARNING,
-				   "Cannot set llt %s: Invalid llt value (1..%u expected)",
-				   llt_str, FST_MAX_LLT_MS);
-		return -1;
-	}
-	fst_session_set_llt(s, (u32) llt);
-
-	return 0;
-}
-
-
-void fst_session_global_on_iface_detached(struct fst_iface *iface)
-{
-	struct fst_session *s;
-
-	foreach_fst_session(s) {
-		if (fst_session_is_in_progress(s) &&
-		    (s->data.new_iface == iface ||
-		     s->data.old_iface == iface))
-			fst_session_reset_ex(s, REASON_DETACH_IFACE);
-	}
-}
-
-
-struct fst_session * fst_session_global_get_first_by_group(struct fst_group *g)
-{
-	struct fst_session *s;
-
-	foreach_fst_session(s) {
-		if (s->group == g)
-			return s;
-	}
-
-	return NULL;
-}
-
-
-#ifdef CONFIG_FST_TEST
-
-static int get_group_fill_session(struct fst_group **g, struct fst_session *s)
-{
-	const u8 *old_addr, *new_addr;
-	struct fst_get_peer_ctx *ctx;
-
-	os_memset(s, 0, sizeof(*s));
-	foreach_fst_group(*g) {
-		s->data.new_iface = fst_group_first_iface(*g);
-		if (s->data.new_iface)
-			break;
-	}
-	if (!s->data.new_iface)
-		return -EINVAL;
-
-	s->data.old_iface = dl_list_entry(s->data.new_iface->group_lentry.next,
-					  struct fst_iface, group_lentry);
-	if (!s->data.old_iface)
-		return -EINVAL;
-
-	old_addr = fst_iface_get_peer_first(s->data.old_iface, &ctx, TRUE);
-	if (!old_addr)
-		return -EINVAL;
-
-	new_addr = fst_iface_get_peer_first(s->data.new_iface, &ctx, TRUE);
-	if (!new_addr)
-		return -EINVAL;
-
-	os_memcpy(s->data.old_peer_addr, old_addr, ETH_ALEN);
-	os_memcpy(s->data.new_peer_addr, new_addr, ETH_ALEN);
-
-	return 0;
-}
-
-
-#define FST_MAX_COMMAND_WORD_NAME_LENGTH 16
-
-int fst_test_req_send_fst_request(const char *params)
-{
-	int fsts_id;
-	Boolean is_valid;
-	char *endp;
-	struct fst_setup_req req;
-	struct fst_session s;
-	struct fst_group *g;
-	enum hostapd_hw_mode hw_mode;
-	u8 channel;
-	char additional_param[FST_MAX_COMMAND_WORD_NAME_LENGTH];
-
-	if (params[0] != ' ')
-		return -EINVAL;
-	params++;
-	fsts_id = fst_read_next_int_param(params, &is_valid, &endp);
-	if (!is_valid)
-		return -EINVAL;
-
-	if (get_group_fill_session(&g, &s))
-		return -EINVAL;
-
-	req.action = FST_ACTION_SETUP_REQUEST;
-	req.dialog_token = g->dialog_token;
-	req.llt = host_to_le32(FST_LLT_MS_DEFAULT);
-	/* 8.4.2.147 Session Transition element */
-	req.stie.element_id = WLAN_EID_SESSION_TRANSITION;
-	req.stie.length = sizeof(req.stie) - 2;
-	req.stie.fsts_id = host_to_le32(fsts_id);
-	req.stie.session_control = SESSION_CONTROL(SESSION_TYPE_BSS, 0);
-
-	fst_iface_get_channel_info(s.data.new_iface, &hw_mode, &channel);
-	req.stie.new_band_id = fst_hw_mode_to_band(hw_mode);
-	req.stie.new_band_op = 1;
-	req.stie.new_band_setup = 0;
-
-	fst_iface_get_channel_info(s.data.old_iface, &hw_mode, &channel);
-	req.stie.old_band_id = fst_hw_mode_to_band(hw_mode);
-	req.stie.old_band_op = 1;
-	req.stie.old_band_setup = 0;
-
-	if (!fst_read_next_text_param(endp, additional_param,
-				       sizeof(additional_param), &endp)) {
-		if (!os_strcasecmp(additional_param, FST_CTR_PVAL_BAD_NEW_BAND))
-			req.stie.new_band_id = req.stie.old_band_id;
-	}
-
-	return fst_session_send_action(&s, TRUE, &req, sizeof(req),
-				       s.data.old_iface->mb_ie);
-}
-
-
-int fst_test_req_send_fst_response(const char *params)
-{
-	int fsts_id;
-	Boolean is_valid;
-	char *endp;
-	struct fst_setup_res res;
-	struct fst_session s;
-	struct fst_group *g;
-	enum hostapd_hw_mode hw_mode;
-	u8 status_code;
-	u8 channel;
-	char response[FST_MAX_COMMAND_WORD_NAME_LENGTH];
-	struct fst_session *_s;
-
-	if (params[0] != ' ')
-		return -EINVAL;
-	params++;
-	fsts_id = fst_read_next_int_param(params, &is_valid, &endp);
-	if (!is_valid)
-		return -EINVAL;
-
-	if (get_group_fill_session(&g, &s))
-		return -EINVAL;
-
-	status_code = WLAN_STATUS_SUCCESS;
-	if (!fst_read_next_text_param(endp, response, sizeof(response),
-				      &endp)) {
-		if (!os_strcasecmp(response, FST_CS_PVAL_RESPONSE_REJECT))
-			status_code = WLAN_STATUS_PENDING_ADMITTING_FST_SESSION;
-	}
-
-	os_memset(&res, 0, sizeof(res));
-
-	res.action = FST_ACTION_SETUP_RESPONSE;
-	/*
-	 * If some session has just received an FST Setup Request, then
-	 * use the correct dialog token copied from this request.
-	 */
-	_s = fst_find_session_in_progress(fst_session_get_peer_addr(&s, TRUE),
-					  g);
-	res.dialog_token = (_s && fst_session_is_ready_pending(_s)) ?
-		_s->data.pending_setup_req_dlgt : g->dialog_token;
-	res.status_code  = status_code;
-
-	res.stie.element_id = WLAN_EID_SESSION_TRANSITION;
-	res.stie.length = sizeof(res.stie) - 2;
-
-	if (res.status_code == WLAN_STATUS_SUCCESS) {
-		res.stie.fsts_id = host_to_le32(fsts_id);
-		res.stie.session_control = SESSION_CONTROL(SESSION_TYPE_BSS, 0);
-
-		fst_iface_get_channel_info(s.data.new_iface, &hw_mode,
-					    &channel);
-		res.stie.new_band_id = fst_hw_mode_to_band(hw_mode);
-		res.stie.new_band_op = 1;
-		res.stie.new_band_setup = 0;
-
-		fst_iface_get_channel_info(s.data.old_iface, &hw_mode,
-					   &channel);
-		res.stie.old_band_id = fst_hw_mode_to_band(hw_mode);
-		res.stie.old_band_op = 1;
-		res.stie.old_band_setup = 0;
-	}
-
-	if (!fst_read_next_text_param(endp, response, sizeof(response),
-				      &endp)) {
-		if (!os_strcasecmp(response, FST_CTR_PVAL_BAD_NEW_BAND))
-			res.stie.new_band_id = res.stie.old_band_id;
-	}
-
-	return fst_session_send_action(&s, TRUE, &res, sizeof(res),
-				       s.data.old_iface->mb_ie);
-}
-
-
-int fst_test_req_send_ack_request(const char *params)
-{
-	int fsts_id;
-	Boolean is_valid;
-	char *endp;
-	struct fst_ack_req req;
-	struct fst_session s;
-	struct fst_group *g;
-
-	if (params[0] != ' ')
-		return -EINVAL;
-	params++;
-	fsts_id = fst_read_next_int_param(params, &is_valid, &endp);
-	if (!is_valid)
-		return -EINVAL;
-
-	if (get_group_fill_session(&g, &s))
-		return -EINVAL;
-
-	os_memset(&req, 0, sizeof(req));
-	req.action = FST_ACTION_ACK_REQUEST;
-	req.dialog_token = g->dialog_token;
-	req.fsts_id = host_to_le32(fsts_id);
-
-	return fst_session_send_action(&s, FALSE, &req, sizeof(req), NULL);
-}
-
-
-int fst_test_req_send_ack_response(const char *params)
-{
-	int fsts_id;
-	Boolean is_valid;
-	char *endp;
-	struct fst_ack_res res;
-	struct fst_session s;
-	struct fst_group *g;
-
-	if (params[0] != ' ')
-		return -EINVAL;
-	params++;
-	fsts_id = fst_read_next_int_param(params, &is_valid, &endp);
-	if (!is_valid)
-		return -EINVAL;
-
-	if (get_group_fill_session(&g, &s))
-		return -EINVAL;
-
-	os_memset(&res, 0, sizeof(res));
-	res.action = FST_ACTION_ACK_RESPONSE;
-	res.dialog_token = g->dialog_token;
-	res.fsts_id = host_to_le32(fsts_id);
-
-	return fst_session_send_action(&s, FALSE, &res, sizeof(res), NULL);
-}
-
-
-int fst_test_req_send_tear_down(const char *params)
-{
-	int fsts_id;
-	Boolean is_valid;
-	char *endp;
-	struct fst_tear_down td;
-	struct fst_session s;
-	struct fst_group *g;
-
-	if (params[0] != ' ')
-		return -EINVAL;
-	params++;
-	fsts_id = fst_read_next_int_param(params, &is_valid, &endp);
-	if (!is_valid)
-		return -EINVAL;
-
-	if (get_group_fill_session(&g, &s))
-		return -EINVAL;
-
-	os_memset(&td, 0, sizeof(td));
-	td.action = FST_ACTION_TEAR_DOWN;
-	td.fsts_id = host_to_le32(fsts_id);
-
-	return fst_session_send_action(&s, TRUE, &td, sizeof(td), NULL);
-}
-
-
-u32 fst_test_req_get_fsts_id(const char *params)
-{
-	int sid;
-	Boolean is_valid;
-	char *endp;
-	struct fst_session *s;
-
-	if (params[0] != ' ')
-		return FST_FSTS_ID_NOT_FOUND;
-	params++;
-	sid = fst_read_next_int_param(params, &is_valid, &endp);
-	if (!is_valid)
-		return FST_FSTS_ID_NOT_FOUND;
-
-	s = fst_session_get_by_id(sid);
-	if (!s)
-		return FST_FSTS_ID_NOT_FOUND;
-
-	return s->data.fsts_id;
-}
-
-
-int fst_test_req_get_local_mbies(const char *request, char *buf, size_t buflen)
-{
-	char *endp;
-	char ifname[FST_MAX_COMMAND_WORD_NAME_LENGTH];
-	struct fst_group *g;
-	struct fst_iface *iface;
-
-	if (request[0] != ' ')
-		return -EINVAL;
-	request++;
-	if (fst_read_next_text_param(request, ifname, sizeof(ifname), &endp) ||
-	    !*ifname)
-		goto problem;
-	g = dl_list_first(&fst_global_groups_list, struct fst_group,
-			  global_groups_lentry);
-	if (!g)
-		goto problem;
-	iface = fst_group_get_iface_by_name(g, ifname);
-	if (!iface || !iface->mb_ie)
-		goto problem;
-	return wpa_snprintf_hex(buf, buflen, wpabuf_head(iface->mb_ie),
-				wpabuf_len(iface->mb_ie));
-
-problem:
-	return os_snprintf(buf, buflen, "FAIL\n");
-}
-
-#endif /* CONFIG_FST_TEST */