text: /*
   * hostapd / WPA authenticator glue code
   * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #include "utils/includes.h"
  
  #include "utils/common.h"
  #include "utils/eloop.h"
  #include "utils/list.h"
  #include "common/ieee802_11_defs.h"
  #include "common/sae.h"
  #include "common/wpa_ctrl.h"
  #include "crypto/sha1.h"
  #include "eapol_auth/eapol_auth_sm.h"
  #include "eapol_auth/eapol_auth_sm_i.h"
  #include "eap_server/eap.h"
  #include "l2_packet/l2_packet.h"
  #include "eth_p_oui.h"
  #include "hostapd.h"
  #include "ieee802_1x.h"
  #include "preauth_auth.h"
  #include "sta_info.h"
  #include "tkip_countermeasures.h"
  #include "ap_drv_ops.h"
  #include "ap_config.h"
  #include "ieee802_11.h"
  #include "pmksa_cache_auth.h"
  #include "wpa_auth.h"
  #include "wpa_auth_glue.h"
  
  
  static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
  				  struct hostapd_config *iconf,
  				  struct wpa_auth_config *wconf)
  {
  	int sae_pw_id;
  
  	os_memset(wconf, 0, sizeof(*wconf));
  	wconf->wpa = conf->wpa;
  	wconf->extended_key_id = conf->extended_key_id;
  	wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
  	wconf->wpa_pairwise = conf->wpa_pairwise;
  	wconf->wpa_group = conf->wpa_group;
  	wconf->wpa_group_rekey = conf->wpa_group_rekey;
  	wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
  	wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
  	wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
  	wconf->wpa_group_update_count = conf->wpa_group_update_count;
  	wconf->wpa_disable_eapol_key_retries =
  		conf->wpa_disable_eapol_key_retries;
  	wconf->wpa_pairwise_update_count = conf->wpa_pairwise_update_count;
  	wconf->rsn_pairwise = conf->rsn_pairwise;
  	wconf->rsn_preauth = conf->rsn_preauth;
  	wconf->eapol_version = conf->eapol_version;
  #ifdef CONFIG_MACSEC
  	if (wconf->eapol_version > 2)
  		wconf->eapol_version = 2;
  #endif /* CONFIG_MACSEC */
  	wconf->wmm_enabled = conf->wmm_enabled;
  	wconf->wmm_uapsd = conf->wmm_uapsd;
  	wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
  #ifdef CONFIG_OCV
  	wconf->ocv = conf->ocv;
  #endif /* CONFIG_OCV */
  	wconf->okc = conf->okc;
  	wconf->ieee80211w = conf->ieee80211w;
  	wconf->beacon_prot = conf->beacon_prot;
  	wconf->group_mgmt_cipher = conf->group_mgmt_cipher;
  	wconf->sae_require_mfp = conf->sae_require_mfp;
  #ifdef CONFIG_IEEE80211R_AP
  	wconf->ssid_len = conf->ssid.ssid_len;
  	if (wconf->ssid_len > SSID_MAX_LEN)
  		wconf->ssid_len = SSID_MAX_LEN;
  	os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
  	os_memcpy(wconf->mobility_domain, conf->mobility_domain,
  		  MOBILITY_DOMAIN_ID_LEN);
  	if (conf->nas_identifier &&
  	    os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
  		wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
  		os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
  			  wconf->r0_key_holder_len);
  	}
  	os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
  	wconf->r0_key_lifetime = conf->r0_key_lifetime;
  	wconf->r1_max_key_lifetime = conf->r1_max_key_lifetime;
  	wconf->reassociation_deadline = conf->reassociation_deadline;
  	wconf->rkh_pos_timeout = conf->rkh_pos_timeout;
  	wconf->rkh_neg_timeout = conf->rkh_neg_timeout;
  	wconf->rkh_pull_timeout = conf->rkh_pull_timeout;
  	wconf->rkh_pull_retries = conf->rkh_pull_retries;
  	wconf->r0kh_list = &conf->r0kh_list;
  	wconf->r1kh_list = &conf->r1kh_list;
  	wconf->pmk_r1_push = conf->pmk_r1_push;
  	wconf->ft_over_ds = conf->ft_over_ds;
  	wconf->ft_psk_generate_local = conf->ft_psk_generate_local;
  #endif /* CONFIG_IEEE80211R_AP */
  #ifdef CONFIG_HS20
  	wconf->disable_gtk = conf->disable_dgaf;
  	if (conf->osen) {
  		wconf->disable_gtk = 1;
  		wconf->wpa = WPA_PROTO_OSEN;
  		wconf->wpa_key_mgmt = WPA_KEY_MGMT_OSEN;
  		wconf->wpa_pairwise = 0;
  		wconf->wpa_group = WPA_CIPHER_CCMP;
  		wconf->rsn_pairwise = WPA_CIPHER_CCMP;
  		wconf->rsn_preauth = 0;
  		wconf->disable_pmksa_caching = 1;
  		wconf->ieee80211w = 1;
  	}
  #endif /* CONFIG_HS20 */
  #ifdef CONFIG_TESTING_OPTIONS
  	wconf->corrupt_gtk_rekey_mic_probability =
  		iconf->corrupt_gtk_rekey_mic_probability;
  	if (conf->own_ie_override &&
  	    wpabuf_len(conf->own_ie_override) <= MAX_OWN_IE_OVERRIDE) {
  		wconf->own_ie_override_len = wpabuf_len(conf->own_ie_override);
  		os_memcpy(wconf->own_ie_override,
  			  wpabuf_head(conf->own_ie_override),
  			  wconf->own_ie_override_len);
  	}
  	if (conf->rsne_override_eapol &&
  	    wpabuf_len(conf->rsne_override_eapol) <= MAX_OWN_IE_OVERRIDE) {
  		wconf->rsne_override_eapol_set = 1;
  		wconf->rsne_override_eapol_len =
  			wpabuf_len(conf->rsne_override_eapol);
  		os_memcpy(wconf->rsne_override_eapol,
  			  wpabuf_head(conf->rsne_override_eapol),
  			  wconf->rsne_override_eapol_len);
  	}
  	if (conf->rsnxe_override_eapol &&
  	    wpabuf_len(conf->rsnxe_override_eapol) <= MAX_OWN_IE_OVERRIDE) {
  		wconf->rsnxe_override_eapol_set = 1;
  		wconf->rsnxe_override_eapol_len =
  			wpabuf_len(conf->rsnxe_override_eapol);
  		os_memcpy(wconf->rsnxe_override_eapol,
  			  wpabuf_head(conf->rsnxe_override_eapol),
  			  wconf->rsnxe_override_eapol_len);
  	}
  	if (conf->rsne_override_ft &&
  	    wpabuf_len(conf->rsne_override_ft) <= MAX_OWN_IE_OVERRIDE) {
  		wconf->rsne_override_ft_set = 1;
  		wconf->rsne_override_ft_len =
  			wpabuf_len(conf->rsne_override_ft);
  		os_memcpy(wconf->rsne_override_ft,
  			  wpabuf_head(conf->rsne_override_ft),
  			  wconf->rsne_override_ft_len);
  	}
  	if (conf->rsnxe_override_ft &&
  	    wpabuf_len(conf->rsnxe_override_ft) <= MAX_OWN_IE_OVERRIDE) {
  		wconf->rsnxe_override_ft_set = 1;
  		wconf->rsnxe_override_ft_len =
  			wpabuf_len(conf->rsnxe_override_ft);
  		os_memcpy(wconf->rsnxe_override_ft,
  			  wpabuf_head(conf->rsnxe_override_ft),
  			  wconf->rsnxe_override_ft_len);
  	}
  	if (conf->gtk_rsc_override &&
  	    wpabuf_len(conf->gtk_rsc_override) > 0 &&
  	    wpabuf_len(conf->gtk_rsc_override) <= WPA_KEY_RSC_LEN) {
  		os_memcpy(wconf->gtk_rsc_override,
  			  wpabuf_head(conf->gtk_rsc_override),
  			  wpabuf_len(conf->gtk_rsc_override));
  		wconf->gtk_rsc_override_set = 1;
  	}
  	if (conf->igtk_rsc_override &&
  	    wpabuf_len(conf->igtk_rsc_override) > 0 &&
  	    wpabuf_len(conf->igtk_rsc_override) <= WPA_KEY_RSC_LEN) {
  		os_memcpy(wconf->igtk_rsc_override,
  			  wpabuf_head(conf->igtk_rsc_override),
  			  wpabuf_len(conf->igtk_rsc_override));
  		wconf->igtk_rsc_override_set = 1;
  	}
  	wconf->ft_rsnxe_used = conf->ft_rsnxe_used;
  #endif /* CONFIG_TESTING_OPTIONS */
  #ifdef CONFIG_P2P
  	os_memcpy(wconf->ip_addr_go, conf->ip_addr_go, 4);
  	os_memcpy(wconf->ip_addr_mask, conf->ip_addr_mask, 4);
  	os_memcpy(wconf->ip_addr_start, conf->ip_addr_start, 4);
  	os_memcpy(wconf->ip_addr_end, conf->ip_addr_end, 4);
  #endif /* CONFIG_P2P */
  #ifdef CONFIG_FILS
  	wconf->fils_cache_id_set = conf->fils_cache_id_set;
  	os_memcpy(wconf->fils_cache_id, conf->fils_cache_id,
  		  FILS_CACHE_ID_LEN);
  #endif /* CONFIG_FILS */
  	wconf->sae_pwe = conf->sae_pwe;
  	sae_pw_id = hostapd_sae_pw_id_in_use(conf);
  	if (sae_pw_id == 2 && wconf->sae_pwe != 3)
  		wconf->sae_pwe = 1;
  	else if (sae_pw_id == 1 && wconf->sae_pwe == 0)
  		wconf->sae_pwe = 2;
  #ifdef CONFIG_OWE
  	wconf->owe_ptk_workaround = conf->owe_ptk_workaround;
  #endif /* CONFIG_OWE */
  	wconf->transition_disable = conf->transition_disable;
  #ifdef CONFIG_DPP2
  	wconf->dpp_pfs = conf->dpp_pfs;
  #endif /* CONFIG_DPP2 */
  }
  
  
  static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
  				    logger_level level, const char *txt)
  {
  #ifndef CONFIG_NO_HOSTAPD_LOGGER
  	struct hostapd_data *hapd = ctx;
  	int hlevel;
  
  	switch (level) {
  	case LOGGER_WARNING:
  		hlevel = HOSTAPD_LEVEL_WARNING;
  		break;
  	case LOGGER_INFO:
  		hlevel = HOSTAPD_LEVEL_INFO;
  		break;
  	case LOGGER_DEBUG:
  	default:
  		hlevel = HOSTAPD_LEVEL_DEBUG;
  		break;
  	}
  
  	hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
  #endif /* CONFIG_NO_HOSTAPD_LOGGER */
  }
  
  
  static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
  					u16 reason)
  {
  	struct hostapd_data *hapd = ctx;
  	wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
  		   "STA " MACSTR " reason %d",
  		   __func__, MAC2STR(addr), reason);
  	ap_sta_disconnect(hapd, NULL, addr, reason);
  }
  
  
  static int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
  {
  	struct hostapd_data *hapd = ctx;
  	return michael_mic_failure(hapd, addr, 0);
  }
  
  
  static void hostapd_wpa_auth_psk_failure_report(void *ctx, const u8 *addr)
  {
  	struct hostapd_data *hapd = ctx;
  	wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POSSIBLE_PSK_MISMATCH MACSTR,
  		MAC2STR(addr));
  }
  
  
  static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
  				       wpa_eapol_variable var, int value)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta = ap_get_sta(hapd, addr);
  	if (sta == NULL)
  		return;
  	switch (var) {
  	case WPA_EAPOL_portEnabled:
  		ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
  		break;
  	case WPA_EAPOL_portValid:
  		ieee802_1x_notify_port_valid(sta->eapol_sm, value);
  		break;
  	case WPA_EAPOL_authorized:
  		ieee802_1x_set_sta_authorized(hapd, sta, value);
  		break;
  	case WPA_EAPOL_portControl_Auto:
  		if (sta->eapol_sm)
  			sta->eapol_sm->portControl = Auto;
  		break;
  	case WPA_EAPOL_keyRun:
  		if (sta->eapol_sm)
  			sta->eapol_sm->keyRun = value;
  		break;
  	case WPA_EAPOL_keyAvailable:
  		if (sta->eapol_sm)
  			sta->eapol_sm->eap_if->eapKeyAvailable = value;
  		break;
  	case WPA_EAPOL_keyDone:
  		if (sta->eapol_sm)
  			sta->eapol_sm->keyDone = value;
  		break;
  	case WPA_EAPOL_inc_EapolFramesTx:
  		if (sta->eapol_sm)
  			sta->eapol_sm->dot1xAuthEapolFramesTx++;
  		break;
  	}
  }
  
  
  static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
  				      wpa_eapol_variable var)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta = ap_get_sta(hapd, addr);
  	if (sta == NULL || sta->eapol_sm == NULL)
  		return -1;
  	switch (var) {
  	case WPA_EAPOL_keyRun:
  		return sta->eapol_sm->keyRun;
  	case WPA_EAPOL_keyAvailable:
  		return sta->eapol_sm->eap_if->eapKeyAvailable;
  	default:
  		return -1;
  	}
  }
  
  
  static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
  					   const u8 *p2p_dev_addr,
  					   const u8 *prev_psk, size_t *psk_len,
  					   int *vlan_id)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta = ap_get_sta(hapd, addr);
  	const u8 *psk;
  
  	if (vlan_id)
  		*vlan_id = 0;
  	if (psk_len)
  		*psk_len = PMK_LEN;
  
  #ifdef CONFIG_SAE
  	if (sta && sta->auth_alg == WLAN_AUTH_SAE) {
  		if (!sta->sae || prev_psk)
  			return NULL;
  		return sta->sae->pmk;
  	}
  	if (sta && wpa_auth_uses_sae(sta->wpa_sm)) {
  		wpa_printf(MSG_DEBUG,
  			   "No PSK for STA trying to use SAE with PMKSA caching");
  		return NULL;
  	}
  #endif /* CONFIG_SAE */
  
  #ifdef CONFIG_OWE
  	if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
  	    sta && sta->owe_pmk) {
  		if (psk_len)
  			*psk_len = sta->owe_pmk_len;
  		return sta->owe_pmk;
  	}
  	if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) && sta) {
  		struct rsn_pmksa_cache_entry *sa;
  
  		sa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
  		if (sa && sa->akmp == WPA_KEY_MGMT_OWE) {
  			if (psk_len)
  				*psk_len = sa->pmk_len;
  			return sa->pmk;
  		}
  	}
  #endif /* CONFIG_OWE */
  
  	psk = hostapd_get_psk(hapd->conf, addr, p2p_dev_addr, prev_psk,
  			      vlan_id);
  	/*
  	 * This is about to iterate over all psks, prev_psk gives the last
  	 * returned psk which should not be returned again.
  	 * logic list (all hostapd_get_psk; all sta->psk)
  	 */
  	if (sta && sta->psk && !psk) {
  		struct hostapd_sta_wpa_psk_short *pos;
  
  		if (vlan_id)
  			*vlan_id = 0;
  		psk = sta->psk->psk;
  		for (pos = sta->psk; pos; pos = pos->next) {
  			if (pos->is_passphrase) {
  				pbkdf2_sha1(pos->passphrase,
  					    hapd->conf->ssid.ssid,
  					    hapd->conf->ssid.ssid_len, 4096,
  					    pos->psk, PMK_LEN);
  				pos->is_passphrase = 0;
  			}
  			if (pos->psk == prev_psk) {
  				psk = pos->next ? pos->next->psk : NULL;
  				break;
  			}
  		}
  	}
  	return psk;
  }
  
  
  static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
  				    size_t *len)
  {
  	struct hostapd_data *hapd = ctx;
  	const u8 *key;
  	size_t keylen;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, addr);
  	if (sta == NULL) {
  		wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Cannot find STA");
  		return -1;
  	}
  
  	key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
  	if (key == NULL) {
  		wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Key is null, eapol_sm: %p",
  			   sta->eapol_sm);
  		return -1;
  	}
  
  	if (keylen > *len)
  		keylen = *len;
  	os_memcpy(msk, key, keylen);
  	*len = keylen;
  
  	return 0;
  }
  
  
  static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
  				    const u8 *addr, int idx, u8 *key,
  				    size_t key_len, enum key_flag key_flag)
  {
  	struct hostapd_data *hapd = ctx;
  	const char *ifname = hapd->conf->iface;
  
  	if (vlan_id > 0) {
  		ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
  		if (!ifname) {
  			if (!(hapd->iface->drv_flags &
  			      WPA_DRIVER_FLAGS_VLAN_OFFLOAD))
  				return -1;
  			ifname = hapd->conf->iface;
  		}
  	}
  
  #ifdef CONFIG_TESTING_OPTIONS
  	if (key_flag & KEY_FLAG_MODIFY) {
  		/* We are updating an already installed key. Don't overwrite
  		 * the already stored key information with zeros.
  		 */
  	} else if (addr && !is_broadcast_ether_addr(addr)) {
  		struct sta_info *sta;
  
  		sta = ap_get_sta(hapd, addr);
  		if (sta) {
  			sta->last_tk_alg = alg;
  			sta->last_tk_key_idx = idx;
  			if (key)
  				os_memcpy(sta->last_tk, key, key_len);
  			sta->last_tk_len = key_len;
  		}
  	} else if (alg == WPA_ALG_IGTK ||
  		   alg == WPA_ALG_BIP_GMAC_128 ||
  		   alg == WPA_ALG_BIP_GMAC_256 ||
  		   alg == WPA_ALG_BIP_CMAC_256) {
  		hapd->last_igtk_alg = alg;
  		hapd->last_igtk_key_idx = idx;
  		if (key)
  			os_memcpy(hapd->last_igtk, key, key_len);
  		hapd->last_igtk_len = key_len;
  	} else {
  		hapd->last_gtk_alg = alg;
  		hapd->last_gtk_key_idx = idx;
  		if (key)
  			os_memcpy(hapd->last_gtk, key, key_len);
  		hapd->last_gtk_len = key_len;
  	}
  #endif /* CONFIG_TESTING_OPTIONS */
  	return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, vlan_id, 1,
  				   NULL, 0, key, key_len, key_flag);
  }
  
  
  static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
  				       u8 *seq)
  {
  	struct hostapd_data *hapd = ctx;
  	return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
  }
  
  
  static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
  				       const u8 *data, size_t data_len,
  				       int encrypt)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  	u32 flags = 0;
  
  #ifdef CONFIG_TESTING_OPTIONS
  	if (hapd->ext_eapol_frame_io) {
  		size_t hex_len = 2 * data_len + 1;
  		char *hex = os_malloc(hex_len);
  
  		if (hex == NULL)
  			return -1;
  		wpa_snprintf_hex(hex, hex_len, data, data_len);
  		wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s",
  			MAC2STR(addr), hex);
  		os_free(hex);
  		return 0;
  	}
  #endif /* CONFIG_TESTING_OPTIONS */
  
  	sta = ap_get_sta(hapd, addr);
  	if (sta)
  		flags = hostapd_sta_flags_to_drv(sta->flags);
  
  	return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
  					   encrypt, flags);
  }
  
  
  static int hostapd_wpa_auth_for_each_sta(
  	void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
  	void *cb_ctx)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	for (sta = hapd->sta_list; sta; sta = sta->next) {
  		if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
  			return 1;
  	}
  	return 0;
  }
  
  
  struct wpa_auth_iface_iter_data {
  	int (*cb)(struct wpa_authenticator *sm, void *ctx);
  	void *cb_ctx;
  };
  
  static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
  {
  	struct wpa_auth_iface_iter_data *data = ctx;
  	size_t i;
  	for (i = 0; i < iface->num_bss; i++) {
  		if (iface->bss[i]->wpa_auth &&
  		    data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
  			return 1;
  	}
  	return 0;
  }
  
  
  static int hostapd_wpa_auth_for_each_auth(
  	void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
  	void *cb_ctx)
  {
  	struct hostapd_data *hapd = ctx;
  	struct wpa_auth_iface_iter_data data;
  	if (hapd->iface->interfaces == NULL ||
  	    hapd->iface->interfaces->for_each_interface == NULL)
  		return -1;
  	data.cb = cb;
  	data.cb_ctx = cb_ctx;
  	return hapd->iface->interfaces->for_each_interface(
  		hapd->iface->interfaces, wpa_auth_iface_iter, &data);
  }
  
  
  #ifdef CONFIG_IEEE80211R_AP
  
  struct wpa_ft_rrb_rx_later_data {
  	struct dl_list list;
  	u8 addr[ETH_ALEN];
  	size_t data_len;
  	/* followed by data_len octets of data */
  };
  
  static void hostapd_wpa_ft_rrb_rx_later(void *eloop_ctx, void *timeout_ctx)
  {
  	struct hostapd_data *hapd = eloop_ctx;
  	struct wpa_ft_rrb_rx_later_data *data, *n;
  
  	dl_list_for_each_safe(data, n, &hapd->l2_queue,
  			      struct wpa_ft_rrb_rx_later_data, list) {
  		if (hapd->wpa_auth) {
  			wpa_ft_rrb_rx(hapd->wpa_auth, data->addr,
  				      (const u8 *) (data + 1),
  				      data->data_len);
  		}
  		dl_list_del(&data->list);
  		os_free(data);
  	}
  }
  
  
  struct wpa_auth_ft_iface_iter_data {
  	struct hostapd_data *src_hapd;
  	const u8 *dst;
  	const u8 *data;
  	size_t data_len;
  };
  
  
  static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
  {
  	struct wpa_auth_ft_iface_iter_data *idata = ctx;
  	struct wpa_ft_rrb_rx_later_data *data;
  	struct hostapd_data *hapd;
  	size_t j;
  
  	for (j = 0; j < iface->num_bss; j++) {
  		hapd = iface->bss[j];
  		if (hapd == idata->src_hapd ||
  		    !hapd->wpa_auth ||
  		    os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) != 0)
  			continue;
  
  		wpa_printf(MSG_DEBUG,
  			   "FT: Send RRB data directly to locally managed BSS "
  			   MACSTR "@%s -> " MACSTR "@%s",
  			   MAC2STR(idata->src_hapd->own_addr),
  			   idata->src_hapd->conf->iface,
  			   MAC2STR(hapd->own_addr), hapd->conf->iface);
  
  		/* Defer wpa_ft_rrb_rx() until next eloop step as this is
  		 * when it would be triggered when reading from a socket.
  		 * This avoids
  		 * hapd0:send -> hapd1:recv -> hapd1:send -> hapd0:recv,
  		 * that is calling hapd0:recv handler from within
  		 * hapd0:send directly.
  		 */
  		data = os_zalloc(sizeof(*data) + idata->data_len);
  		if (!data)
  			return 1;
  
  		os_memcpy(data->addr, idata->src_hapd->own_addr, ETH_ALEN);
  		os_memcpy(data + 1, idata->data, idata->data_len);
  		data->data_len = idata->data_len;
  
  		dl_list_add(&hapd->l2_queue, &data->list);
  
  		if (!eloop_is_timeout_registered(hostapd_wpa_ft_rrb_rx_later,
  						 hapd, NULL))
  			eloop_register_timeout(0, 0,
  					       hostapd_wpa_ft_rrb_rx_later,
  					       hapd, NULL);
  
  		return 1;
  	}
  
  	return 0;
  }
  
  #endif /* CONFIG_IEEE80211R_AP */
  
  
  static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
  				       const u8 *data, size_t data_len)
  {
  	struct hostapd_data *hapd = ctx;
  	struct l2_ethhdr *buf;
  	int ret;
  
  #ifdef CONFIG_TESTING_OPTIONS
  	if (hapd->ext_eapol_frame_io && proto == ETH_P_EAPOL) {
  		size_t hex_len = 2 * data_len + 1;
  		char *hex = os_malloc(hex_len);
  
  		if (hex == NULL)
  			return -1;
  		wpa_snprintf_hex(hex, hex_len, data, data_len);
  		wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s",
  			MAC2STR(dst), hex);
  		os_free(hex);
  		return 0;
  	}
  #endif /* CONFIG_TESTING_OPTIONS */
  
  #ifdef CONFIG_IEEE80211R_AP
  	if (proto == ETH_P_RRB && hapd->iface->interfaces &&
  	    hapd->iface->interfaces->for_each_interface) {
  		int res;
  		struct wpa_auth_ft_iface_iter_data idata;
  		idata.src_hapd = hapd;
  		idata.dst = dst;
  		idata.data = data;
  		idata.data_len = data_len;
  		res = hapd->iface->interfaces->for_each_interface(
  			hapd->iface->interfaces, hostapd_wpa_auth_ft_iter,
  			&idata);
  		if (res == 1)
  			return data_len;
  	}
  #endif /* CONFIG_IEEE80211R_AP */
  
  	if (hapd->l2 == NULL)
  		return -1;
  
  	buf = os_malloc(sizeof(*buf) + data_len);
  	if (buf == NULL)
  		return -1;
  	os_memcpy(buf->h_dest, dst, ETH_ALEN);
  	os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
  	buf->h_proto = host_to_be16(proto);
  	os_memcpy(buf + 1, data, data_len);
  	ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
  			     sizeof(*buf) + data_len);
  	os_free(buf);
  	return ret;
  }
  
  
  #ifdef CONFIG_ETH_P_OUI
  static struct eth_p_oui_ctx * hostapd_wpa_get_oui(struct hostapd_data *hapd,
  						  u8 oui_suffix)
  {
  	switch (oui_suffix) {
  #ifdef CONFIG_IEEE80211R_AP
  	case FT_PACKET_R0KH_R1KH_PULL:
  		return hapd->oui_pull;
  	case FT_PACKET_R0KH_R1KH_RESP:
  		return hapd->oui_resp;
  	case FT_PACKET_R0KH_R1KH_PUSH:
  		return hapd->oui_push;
  	case FT_PACKET_R0KH_R1KH_SEQ_REQ:
  		return hapd->oui_sreq;
  	case FT_PACKET_R0KH_R1KH_SEQ_RESP:
  		return hapd->oui_sresp;
  #endif /* CONFIG_IEEE80211R_AP */
  	default:
  		return NULL;
  	}
  }
  #endif /* CONFIG_ETH_P_OUI */
  
  
  #ifdef CONFIG_IEEE80211R_AP
  
  struct oui_deliver_later_data {
  	struct dl_list list;
  	u8 src_addr[ETH_ALEN];
  	u8 dst_addr[ETH_ALEN];
  	size_t data_len;
  	u8 oui_suffix;
  	/* followed by data_len octets of data */
  };
  
  static void hostapd_oui_deliver_later(void *eloop_ctx, void *timeout_ctx)
  {
  	struct hostapd_data *hapd = eloop_ctx;
  	struct oui_deliver_later_data *data, *n;
  	struct eth_p_oui_ctx *oui_ctx;
  
  	dl_list_for_each_safe(data, n, &hapd->l2_oui_queue,
  			      struct oui_deliver_later_data, list) {
  		oui_ctx = hostapd_wpa_get_oui(hapd, data->oui_suffix);
  		wpa_printf(MSG_DEBUG, "RRB(%s): %s src=" MACSTR " dst=" MACSTR
  			   " oui_suffix=%u data_len=%u data=%p",
  			   hapd->conf->iface, __func__,
  			   MAC2STR(data->src_addr), MAC2STR(data->dst_addr),
  			   data->oui_suffix, (unsigned int) data->data_len,
  			   data);
  		if (hapd->wpa_auth && oui_ctx) {
  			eth_p_oui_deliver(oui_ctx, data->src_addr,
  					  data->dst_addr,
  					  (const u8 *) (data + 1),
  					  data->data_len);
  		}
  		dl_list_del(&data->list);
  		os_free(data);
  	}
  }
  
  
  struct wpa_auth_oui_iface_iter_data {
  	struct hostapd_data *src_hapd;
  	const u8 *dst_addr;
  	const u8 *data;
  	size_t data_len;
  	u8 oui_suffix;
  };
  
  static int hostapd_wpa_auth_oui_iter(struct hostapd_iface *iface, void *ctx)
  {
  	struct wpa_auth_oui_iface_iter_data *idata = ctx;
  	struct oui_deliver_later_data *data;
  	struct hostapd_data *hapd, *src_hapd = idata->src_hapd;
  	size_t j;
  
  	for (j = 0; j < iface->num_bss; j++) {
  		hapd = iface->bss[j];
  		if (hapd == src_hapd)
  			continue; /* don't deliver back to same interface */
  		if (!wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) ||
  		    hapd->conf->ssid.ssid_len !=
  		    src_hapd->conf->ssid.ssid_len ||
  		    os_memcmp(hapd->conf->ssid.ssid,
  			      src_hapd->conf->ssid.ssid,
  			      hapd->conf->ssid.ssid_len) != 0 ||
  		    os_memcmp(hapd->conf->mobility_domain,
  			      src_hapd->conf->mobility_domain,
  			      MOBILITY_DOMAIN_ID_LEN) != 0)
  			continue; /* no matching FT SSID/mobility domain */
  		if (!is_multicast_ether_addr(idata->dst_addr) &&
  		    os_memcmp(hapd->own_addr, idata->dst_addr, ETH_ALEN) != 0)
  			continue; /* destination address does not match */
  
  		/* defer eth_p_oui_deliver until next eloop step as this is
  		 * when it would be triggerd from reading from sock
  		 * This avoids
  		 * hapd0:send -> hapd1:recv -> hapd1:send -> hapd0:recv,
  		 * that is calling hapd0:recv handler from within
  		 * hapd0:send directly.
  		 */
  		data = os_zalloc(sizeof(*data) + idata->data_len);
  		if (!data)
  			return 1;
  		wpa_printf(MSG_DEBUG,
  			   "RRB(%s): local delivery to %s dst=" MACSTR
  			   " oui_suffix=%u data_len=%u data=%p",
  			   src_hapd->conf->iface, hapd->conf->iface,
  			   MAC2STR(idata->dst_addr), idata->oui_suffix,
  			   (unsigned int) idata->data_len, data);
  
  		os_memcpy(data->src_addr, src_hapd->own_addr, ETH_ALEN);
  		os_memcpy(data->dst_addr, idata->dst_addr, ETH_ALEN);
  		os_memcpy(data + 1, idata->data, idata->data_len);
  		data->data_len = idata->data_len;
  		data->oui_suffix = idata->oui_suffix;
  
  		dl_list_add_tail(&hapd->l2_oui_queue, &data->list);
  
  		if (!eloop_is_timeout_registered(hostapd_oui_deliver_later,
  						 hapd, NULL))
  			eloop_register_timeout(0, 0,
  					       hostapd_oui_deliver_later,
  					       hapd, NULL);
  
  		/* If dst_addr is a multicast address, do not return any
  		 * non-zero value here. Otherwise, the iteration of
  		 * for_each_interface() will be stopped. */
  		if (!is_multicast_ether_addr(idata->dst_addr))
  			return 1;
  	}
  
  	return 0;
  }
  
  #endif /* CONFIG_IEEE80211R_AP */
  
  
  static int hostapd_wpa_auth_send_oui(void *ctx, const u8 *dst, u8 oui_suffix,
  				     const u8 *data, size_t data_len)
  {
  #ifdef CONFIG_ETH_P_OUI
  	struct hostapd_data *hapd = ctx;
  	struct eth_p_oui_ctx *oui_ctx;
  
  	wpa_printf(MSG_DEBUG, "RRB(%s): send to dst=" MACSTR
  		   " oui_suffix=%u data_len=%u",
  		   hapd->conf->iface, MAC2STR(dst), oui_suffix,
  		   (unsigned int) data_len);
  #ifdef CONFIG_IEEE80211R_AP
  	if (hapd->iface->interfaces &&
  	    hapd->iface->interfaces->for_each_interface) {
  		struct wpa_auth_oui_iface_iter_data idata;
  		int res;
  
  		idata.src_hapd = hapd;
  		idata.dst_addr = dst;
  		idata.data = data;
  		idata.data_len = data_len;
  		idata.oui_suffix = oui_suffix;
  		res = hapd->iface->interfaces->for_each_interface(
  			hapd->iface->interfaces, hostapd_wpa_auth_oui_iter,
  			&idata);
  		if (res == 1)
  			return data_len;
  	}
  #endif /* CONFIG_IEEE80211R_AP */
  
  	oui_ctx = hostapd_wpa_get_oui(hapd, oui_suffix);
  	if (!oui_ctx)
  		return -1;
  
  	return eth_p_oui_send(oui_ctx, hapd->own_addr, dst, data, data_len);
  #else /* CONFIG_ETH_P_OUI */
  	return -1;
  #endif /* CONFIG_ETH_P_OUI */
  }
  
  
  static int hostapd_channel_info(void *ctx, struct wpa_channel_info *ci)
  {
  	struct hostapd_data *hapd = ctx;
  
  	return hostapd_drv_channel_info(hapd, ci);
  }
  
  
  static int hostapd_wpa_auth_update_vlan(void *ctx, const u8 *addr, int vlan_id)
  {
  #ifndef CONFIG_NO_VLAN
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, addr);
  	if (!sta)
  		return -1;
  
  	if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_VLAN_OFFLOAD)) {
  		struct vlan_description vlan_desc;
  
  		os_memset(&vlan_desc, 0, sizeof(vlan_desc));
  		vlan_desc.notempty = 1;
  		vlan_desc.untagged = vlan_id;
  		if (!hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
  			wpa_printf(MSG_INFO,
  				   "Invalid VLAN ID %d in wpa_psk_file",
  				   vlan_id);
  			return -1;
  		}
  
  		if (ap_sta_set_vlan(hapd, sta, &vlan_desc) < 0) {
  			wpa_printf(MSG_INFO,
  				   "Failed to assign VLAN ID %d from wpa_psk_file to "
  				   MACSTR, vlan_id, MAC2STR(sta->addr));
  			return -1;
  		}
  	} else {
  		sta->vlan_id = vlan_id;
  	}
  
  	wpa_printf(MSG_INFO,
  		   "Assigned VLAN ID %d from wpa_psk_file to " MACSTR,
  		   vlan_id, MAC2STR(sta->addr));
  	if ((sta->flags & WLAN_STA_ASSOC) &&
  	    ap_sta_bind_vlan(hapd, sta) < 0)
  		return -1;
  #endif /* CONFIG_NO_VLAN */
  
  	return 0;
  }
  
  
  #ifdef CONFIG_OCV
  static int hostapd_get_sta_tx_params(void *ctx, const u8 *addr,
  				     int ap_max_chanwidth, int ap_seg1_idx,
  				     int *bandwidth, int *seg1_idx)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, addr);
  	if (!sta) {
  		hostapd_wpa_auth_logger(hapd, addr, LOGGER_INFO,
  					"Failed to get STA info to validate received OCI");
  		return -1;
  	}
  
  	return get_tx_parameters(sta, ap_max_chanwidth, ap_seg1_idx, bandwidth,
  				 seg1_idx);
  }
  #endif /* CONFIG_OCV */
  
  
  #ifdef CONFIG_IEEE80211R_AP
  
  static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
  					   const u8 *data, size_t data_len)
  {
  	struct hostapd_data *hapd = ctx;
  	int res;
  	struct ieee80211_mgmt *m;
  	size_t mlen;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, dst);
  	if (sta == NULL || sta->wpa_sm == NULL)
  		return -1;
  
  	m = os_zalloc(sizeof(*m) + data_len);
  	if (m == NULL)
  		return -1;
  	mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
  	m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
  					WLAN_FC_STYPE_ACTION);
  	os_memcpy(m->da, dst, ETH_ALEN);
  	os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
  	os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
  	os_memcpy(&m->u, data, data_len);
  
  	res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0, NULL, 0, 0);
  	os_free(m);
  	return res;
  }
  
  
  static struct wpa_state_machine *
  hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  	int ret;
  
  	wpa_printf(MSG_DEBUG, "Add station entry for " MACSTR
  		   " based on WPA authenticator callback",
  		   MAC2STR(sta_addr));
  	ret = hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT);
  
  	/*
  	 * The expected return values from hostapd_add_sta_node() are
  	 * 0: successfully added STA entry
  	 * -EOPNOTSUPP: driver or driver wrapper does not support/need this
  	 *	operations
  	 * any other negative value: error in adding the STA entry */
  	if (ret < 0 && ret != -EOPNOTSUPP)
  		return NULL;
  
  	sta = ap_sta_add(hapd, sta_addr);
  	if (sta == NULL)
  		return NULL;
  	if (ret == 0)
  		sta->added_unassoc = 1;
  
  	sta->ft_over_ds = 1;
  	if (sta->wpa_sm) {
  		sta->auth_alg = WLAN_AUTH_FT;
  		return sta->wpa_sm;
  	}
  
  	sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr, NULL);
  	if (sta->wpa_sm == NULL) {
  		ap_free_sta(hapd, sta);
  		return NULL;
  	}
  	sta->auth_alg = WLAN_AUTH_FT;
  
  	return sta->wpa_sm;
  }
  
  
  static int hostapd_wpa_auth_add_sta_ft(void *ctx, const u8 *sta_addr)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return -1;
  
  	if (FULL_AP_CLIENT_STATE_SUPP(hapd->iface->drv_flags) &&
  	    (sta->flags & WLAN_STA_MFP) && ap_sta_is_authorized(sta) &&
  	    !(hapd->conf->mesh & MESH_ENABLED) && !(sta->added_unassoc)) {
  		/* We could not do this in handle_auth() since there was a
  		 * PMF-enabled association for the STA and the new
  		 * authentication attempt was not yet fully processed. Now that
  		 * we are ready to configure the TK to the driver,
  		 * authentication has succeeded and we can clean up the driver
  		 * STA entry to avoid issues with any maintained state from the
  		 * previous association. */
  		wpa_printf(MSG_DEBUG,
  			   "FT: Remove and re-add driver STA entry after successful FT authentication");
  		return ap_sta_re_add(hapd, sta);
  	}
  
  	return 0;
  }
  
  
  static int hostapd_wpa_auth_set_vlan(void *ctx, const u8 *sta_addr,
  				     struct vlan_description *vlan)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta || !sta->wpa_sm)
  		return -1;
  
  	if (vlan->notempty &&
  	    !hostapd_vlan_valid(hapd->conf->vlan, vlan)) {
  		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
  			       HOSTAPD_LEVEL_INFO,
  			       "Invalid VLAN %d%s received from FT",
  			       vlan->untagged, vlan->tagged[0] ? "+" : "");
  		return -1;
  	}
  
  	if (ap_sta_set_vlan(hapd, sta, vlan) < 0)
  		return -1;
  	/* Configure wpa_group for GTK but ignore error due to driver not
  	 * knowing this STA. */
  	ap_sta_bind_vlan(hapd, sta);
  
  	if (sta->vlan_id)
  		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
  			       HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
  
  	return 0;
  }
  
  
  static int hostapd_wpa_auth_get_vlan(void *ctx, const u8 *sta_addr,
  				     struct vlan_description *vlan)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return -1;
  
  	if (sta->vlan_desc)
  		*vlan = *sta->vlan_desc;
  	else
  		os_memset(vlan, 0, sizeof(*vlan));
  
  	return 0;
  }
  
  
  static int
  hostapd_wpa_auth_set_identity(void *ctx, const u8 *sta_addr,
  			      const u8 *identity, size_t identity_len)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return -1;
  
  	os_free(sta->identity);
  	sta->identity = NULL;
  
  	if (sta->eapol_sm) {
  		os_free(sta->eapol_sm->identity);
  		sta->eapol_sm->identity = NULL;
  		sta->eapol_sm->identity_len = 0;
  	}
  
  	if (!identity_len)
  		return 0;
  
  	/* sta->identity is NULL terminated */
  	sta->identity = os_zalloc(identity_len + 1);
  	if (!sta->identity)
  		return -1;
  	os_memcpy(sta->identity, identity, identity_len);
  
  	if (sta->eapol_sm) {
  		sta->eapol_sm->identity = os_zalloc(identity_len);
  		if (!sta->eapol_sm->identity)
  			return -1;
  		os_memcpy(sta->eapol_sm->identity, identity, identity_len);
  		sta->eapol_sm->identity_len = identity_len;
  	}
  
  	return 0;
  }
  
  
  static size_t
  hostapd_wpa_auth_get_identity(void *ctx, const u8 *sta_addr, const u8 **buf)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  	size_t len;
  	char *identity;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return 0;
  
  	*buf = ieee802_1x_get_identity(sta->eapol_sm, &len);
  	if (*buf && len)
  		return len;
  
  	if (!sta->identity) {
  		*buf = NULL;
  		return 0;
  	}
  
  	identity = sta->identity;
  	len = os_strlen(identity);
  	*buf = (u8 *) identity;
  
  	return len;
  }
  
  
  static int
  hostapd_wpa_auth_set_radius_cui(void *ctx, const u8 *sta_addr,
  				const u8 *radius_cui, size_t radius_cui_len)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return -1;
  
  	os_free(sta->radius_cui);
  	sta->radius_cui = NULL;
  
  	if (sta->eapol_sm) {
  		wpabuf_free(sta->eapol_sm->radius_cui);
  		sta->eapol_sm->radius_cui = NULL;
  	}
  
  	if (!radius_cui)
  		return 0;
  
  	/* sta->radius_cui is NULL terminated */
  	sta->radius_cui = os_zalloc(radius_cui_len + 1);
  	if (!sta->radius_cui)
  		return -1;
  	os_memcpy(sta->radius_cui, radius_cui, radius_cui_len);
  
  	if (sta->eapol_sm) {
  		sta->eapol_sm->radius_cui = wpabuf_alloc_copy(radius_cui,
  							      radius_cui_len);
  		if (!sta->eapol_sm->radius_cui)
  			return -1;
  	}
  
  	return 0;
  }
  
  
  static size_t
  hostapd_wpa_auth_get_radius_cui(void *ctx, const u8 *sta_addr, const u8 **buf)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  	struct wpabuf *b;
  	size_t len;
  	char *radius_cui;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return 0;
  
  	b = ieee802_1x_get_radius_cui(sta->eapol_sm);
  	if (b) {
  		len = wpabuf_len(b);
  		*buf = wpabuf_head(b);
  		return len;
  	}
  
  	if (!sta->radius_cui) {
  		*buf = NULL;
  		return 0;
  	}
  
  	radius_cui = sta->radius_cui;
  	len = os_strlen(radius_cui);
  	*buf = (u8 *) radius_cui;
  
  	return len;
  }
  
  
  static void hostapd_wpa_auth_set_session_timeout(void *ctx, const u8 *sta_addr,
  						 int session_timeout)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta)
  		return;
  
  	if (session_timeout) {
  		os_get_reltime(&sta->session_timeout);
  		sta->session_timeout.sec += session_timeout;
  		sta->session_timeout_set = 1;
  		ap_sta_session_timeout(hapd, sta, session_timeout);
  	} else {
  		sta->session_timeout_set = 0;
  		ap_sta_no_session_timeout(hapd, sta);
  	}
  }
  
  
  static int hostapd_wpa_auth_get_session_timeout(void *ctx, const u8 *sta_addr)
  {
  	struct hostapd_data *hapd = ctx;
  	struct sta_info *sta;
  	struct os_reltime now, remaining;
  
  	sta = ap_get_sta(hapd, sta_addr);
  	if (!sta || !sta->session_timeout_set)
  		return 0;
  
  	os_get_reltime(&now);
  	if (os_reltime_before(&sta->session_timeout, &now)) {
  		/* already expired, return >0 as timeout was set */
  		return 1;
  	}
  
  	os_reltime_sub(&sta->session_timeout, &now, &remaining);
  
  	return (remaining.sec > 0) ? remaining.sec : 1;
  }
  
  
  static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
  				size_t len)
  {
  	struct hostapd_data *hapd = ctx;
  	struct l2_ethhdr *ethhdr;
  	if (len < sizeof(*ethhdr))
  		return;
  	ethhdr = (struct l2_ethhdr *) buf;
  	wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
  		   MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
  	if (!is_multicast_ether_addr(ethhdr->h_dest) &&
  	    os_memcmp(hapd->own_addr, ethhdr->h_dest, ETH_ALEN) != 0)
  		return;
  	wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
  		      len - sizeof(*ethhdr));
  }
  
  
  static void hostapd_rrb_oui_receive(void *ctx, const u8 *src_addr,
  				    const u8 *dst_addr, u8 oui_suffix,
  				    const u8 *buf, size_t len)
  {
  	struct hostapd_data *hapd = ctx;
  
  	wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
  		   MACSTR, MAC2STR(src_addr), MAC2STR(dst_addr));
  	if (!is_multicast_ether_addr(dst_addr) &&
  	    os_memcmp(hapd->own_addr, dst_addr, ETH_ALEN) != 0)
  		return;
  	wpa_ft_rrb_oui_rx(hapd->wpa_auth, src_addr, dst_addr, oui_suffix, buf,
  			  len);
  }
  
  
  static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr,
  				      u8 *tspec_ie, size_t tspec_ielen)
  {
  	struct hostapd_data *hapd = ctx;
  	return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen);
  }
  
  
  
  static int hostapd_wpa_register_ft_oui(struct hostapd_data *hapd,
  				       const char *ft_iface)
  {
  	hapd->oui_pull = eth_p_oui_register(hapd, ft_iface,
  					    FT_PACKET_R0KH_R1KH_PULL,
  					    hostapd_rrb_oui_receive, hapd);
  	if (!hapd->oui_pull)
  		return -1;
  
  	hapd->oui_resp = eth_p_oui_register(hapd, ft_iface,
  					    FT_PACKET_R0KH_R1KH_RESP,
  					    hostapd_rrb_oui_receive, hapd);
  	if (!hapd->oui_resp)
  		return -1;
  
  	hapd->oui_push = eth_p_oui_register(hapd, ft_iface,
  					    FT_PACKET_R0KH_R1KH_PUSH,
  					    hostapd_rrb_oui_receive, hapd);
  	if (!hapd->oui_push)
  		return -1;
  
  	hapd->oui_sreq = eth_p_oui_register(hapd, ft_iface,
  					    FT_PACKET_R0KH_R1KH_SEQ_REQ,
  					    hostapd_rrb_oui_receive, hapd);
  	if (!hapd->oui_sreq)
  		return -1;
  
  	hapd->oui_sresp = eth_p_oui_register(hapd, ft_iface,
  					     FT_PACKET_R0KH_R1KH_SEQ_RESP,
  					     hostapd_rrb_oui_receive, hapd);
  	if (!hapd->oui_sresp)
  		return -1;
  
  	return 0;
  }
  
  
  static void hostapd_wpa_unregister_ft_oui(struct hostapd_data *hapd)
  {
  	eth_p_oui_unregister(hapd->oui_pull);
  	hapd->oui_pull = NULL;
  	eth_p_oui_unregister(hapd->oui_resp);
  	hapd->oui_resp = NULL;
  	eth_p_oui_unregister(hapd->oui_push);
  	hapd->oui_push = NULL;
  	eth_p_oui_unregister(hapd->oui_sreq);
  	hapd->oui_sreq = NULL;
  	eth_p_oui_unregister(hapd->oui_sresp);
  	hapd->oui_sresp = NULL;
  }
  #endif /* CONFIG_IEEE80211R_AP */
  
  
  int hostapd_setup_wpa(struct hostapd_data *hapd)
  {
  	struct wpa_auth_config _conf;
  	static const struct wpa_auth_callbacks cb = {
  		.logger = hostapd_wpa_auth_logger,
  		.disconnect = hostapd_wpa_auth_disconnect,
  		.mic_failure_report = hostapd_wpa_auth_mic_failure_report,
  		.psk_failure_report = hostapd_wpa_auth_psk_failure_report,
  		.set_eapol = hostapd_wpa_auth_set_eapol,
  		.get_eapol = hostapd_wpa_auth_get_eapol,
  		.get_psk = hostapd_wpa_auth_get_psk,
  		.get_msk = hostapd_wpa_auth_get_msk,
  		.set_key = hostapd_wpa_auth_set_key,
  		.get_seqnum = hostapd_wpa_auth_get_seqnum,
  		.send_eapol = hostapd_wpa_auth_send_eapol,
  		.for_each_sta = hostapd_wpa_auth_for_each_sta,
  		.for_each_auth = hostapd_wpa_auth_for_each_auth,
  		.send_ether = hostapd_wpa_auth_send_ether,
  		.send_oui = hostapd_wpa_auth_send_oui,
  		.channel_info = hostapd_channel_info,
  		.update_vlan = hostapd_wpa_auth_update_vlan,
  #ifdef CONFIG_OCV
  		.get_sta_tx_params = hostapd_get_sta_tx_params,
  #endif /* CONFIG_OCV */
  #ifdef CONFIG_IEEE80211R_AP
  		.send_ft_action = hostapd_wpa_auth_send_ft_action,
  		.add_sta = hostapd_wpa_auth_add_sta,
  		.add_sta_ft = hostapd_wpa_auth_add_sta_ft,
  		.add_tspec = hostapd_wpa_auth_add_tspec,
  		.set_vlan = hostapd_wpa_auth_set_vlan,
  		.get_vlan = hostapd_wpa_auth_get_vlan,
  		.set_identity = hostapd_wpa_auth_set_identity,
  		.get_identity = hostapd_wpa_auth_get_identity,
  		.set_radius_cui = hostapd_wpa_auth_set_radius_cui,
  		.get_radius_cui = hostapd_wpa_auth_get_radius_cui,
  		.set_session_timeout = hostapd_wpa_auth_set_session_timeout,
  		.get_session_timeout = hostapd_wpa_auth_get_session_timeout,
  #endif /* CONFIG_IEEE80211R_AP */
  	};
  	const u8 *wpa_ie;
  	size_t wpa_ie_len;
  
  	hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &_conf);
  	if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
  		_conf.tx_status = 1;
  	if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME)
  		_conf.ap_mlme = 1;
  
  	if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) &&
  	    (hapd->conf->wpa_deny_ptk0_rekey == PTK0_REKEY_ALLOW_NEVER ||
  	     (hapd->conf->wpa_deny_ptk0_rekey == PTK0_REKEY_ALLOW_LOCAL_OK &&
  	      !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_SAFE_PTK0_REKEYS)))) {
  		wpa_msg(hapd->msg_ctx, MSG_INFO,
  			"Disable PTK0 rekey support - replaced with disconnect");
  		_conf.wpa_deny_ptk0_rekey = 1;
  	}
  
  	if (_conf.extended_key_id &&
  	    (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EXTENDED_KEY_ID))
  		wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Extended Key ID supported");
  	else
  		_conf.extended_key_id = 0;
  
  	hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb, hapd);
  	if (hapd->wpa_auth == NULL) {
  		wpa_printf(MSG_ERROR, "WPA initialization failed.");
  		return -1;
  	}
  
  	if (hostapd_set_privacy(hapd, 1)) {
  		wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
  			   "for interface %s", hapd->conf->iface);
  		return -1;
  	}
  
  	wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
  	if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
  		wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
  			   "the kernel driver.");
  		return -1;
  	}
  
  	if (rsn_preauth_iface_init(hapd)) {
  		wpa_printf(MSG_ERROR, "Initialization of RSN "
  			   "pre-authentication failed.");
  		return -1;
  	}
  
  #ifdef CONFIG_IEEE80211R_AP
  	if (!hostapd_drv_none(hapd) &&
  	    wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt)) {
  		const char *ft_iface;
  
  		ft_iface = hapd->conf->bridge[0] ? hapd->conf->bridge :
  			   hapd->conf->iface;
  		hapd->l2 = l2_packet_init(ft_iface, NULL, ETH_P_RRB,
  					  hostapd_rrb_receive, hapd, 1);
  		if (!hapd->l2) {
  			wpa_printf(MSG_ERROR, "Failed to open l2_packet "
  				   "interface");
  			return -1;
  		}
  
  		if (hostapd_wpa_register_ft_oui(hapd, ft_iface)) {
  			wpa_printf(MSG_ERROR,
  				   "Failed to open ETH_P_OUI interface");
  			return -1;
  		}
  	}
  #endif /* CONFIG_IEEE80211R_AP */
  
  	return 0;
  
  }
  
  
  void hostapd_reconfig_wpa(struct hostapd_data *hapd)
  {
  	struct wpa_auth_config wpa_auth_conf;
  	hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &wpa_auth_conf);
  	wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
  }
  
  
  void hostapd_deinit_wpa(struct hostapd_data *hapd)
  {
  	ieee80211_tkip_countermeasures_deinit(hapd);
  	rsn_preauth_iface_deinit(hapd);
  	if (hapd->wpa_auth) {
  		wpa_deinit(hapd->wpa_auth);
  		hapd->wpa_auth = NULL;
  
  		if (hapd->drv_priv && hostapd_set_privacy(hapd, 0)) {
  			wpa_printf(MSG_DEBUG, "Could not disable "
  				   "PrivacyInvoked for interface %s",
  				   hapd->conf->iface);
  		}
  
  		if (hapd->drv_priv &&
  		    hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
  			wpa_printf(MSG_DEBUG, "Could not remove generic "
  				   "information element from interface %s",
  				   hapd->conf->iface);
  		}
  	}
  	ieee802_1x_deinit(hapd);
  
  #ifdef CONFIG_IEEE80211R_AP
  	eloop_cancel_timeout(hostapd_wpa_ft_rrb_rx_later, hapd, ELOOP_ALL_CTX);
  	hostapd_wpa_ft_rrb_rx_later(hapd, NULL); /* flush without delivering */
  	eloop_cancel_timeout(hostapd_oui_deliver_later, hapd, ELOOP_ALL_CTX);
  	hostapd_oui_deliver_later(hapd, NULL); /* flush without delivering */
  	l2_packet_deinit(hapd->l2);
  	hapd->l2 = NULL;
  	hostapd_wpa_unregister_ft_oui(hapd);
  #endif /* CONFIG_IEEE80211R_AP */
  }
  