void fst_rx_action(struct fst_iface *iface, const struct ieee80211_mgmt *mgmt,
size_t len)
{
if (fst_iface_is_connected(iface, mgmt->sa))
fst_session_on_action_rx(iface, mgmt, len);
else
wpa_printf(MSG_DEBUG,
"FST: Ignore FST Action frame - no FST connection with "
MACSTR, MAC2STR(mgmt->sa));
}
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 = 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_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;
}
