--- /dev/null
+/*
+ * 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 */
projects / mech_eap.git / blobdiff