/*
 * hostapd / Initialization and configuration
 * Host AP kernel driver
 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
 * Copyright (c) 2007-2008, Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#ifndef HOSTAPD_H
#define HOSTAPD_H

#include "common.h"

#define MAX_VLAN_ID 4094

struct wpa_driver_ops;
struct wpa_ctrl_dst;
struct radius_server_data;
struct upnp_wps_device_sm;

#ifdef CONFIG_FULL_DYNAMIC_VLAN
struct full_dynamic_vlan;
#endif /* CONFIG_FULL_DYNAMIC_VLAN */

struct hostapd_probereq_cb {
	void (*cb)(void *ctx, const u8 *sa, const u8 *ie, size_t ie_len);
	void *ctx;
};

/**
 * struct hostapd_data - hostapd per-BSS data structure
 */
struct hostapd_data {
	struct hostapd_iface *iface;
	struct hostapd_config *iconf;
	struct hostapd_bss_config *conf;
	int interface_added; /* virtual interface added for this BSS */

	u8 own_addr[ETH_ALEN];

	int num_sta; /* number of entries in sta_list */
	struct sta_info *sta_list; /* STA info list head */
#define STA_HASH_SIZE 256
#define STA_HASH(sta) (sta[5])
	struct sta_info *sta_hash[STA_HASH_SIZE];

	/*
	 * Bitfield for indicating which AIDs are allocated. Only AID values
	 * 1-2007 are used and as such, the bit at index 0 corresponds to AID
	 * 1.
	 */
#define AID_WORDS ((2008 + 31) / 32)
	u32 sta_aid[AID_WORDS];

	const struct wpa_driver_ops *driver;
	void *drv_priv;

	void *msg_ctx; /* ctx for wpa_msg() calls */

	struct radius_client_data *radius;
	int radius_client_reconfigured;
	u32 acct_session_id_hi, acct_session_id_lo;

	struct iapp_data *iapp;

	struct hostapd_cached_radius_acl *acl_cache;
	struct hostapd_acl_query_data *acl_queries;

	struct wpa_authenticator *wpa_auth;
	struct eapol_authenticator *eapol_auth;

	struct rsn_preauth_interface *preauth_iface;
	time_t michael_mic_failure;
	int michael_mic_failures;
	int tkip_countermeasures;

	int ctrl_sock;
	struct wpa_ctrl_dst *ctrl_dst;

	void *ssl_ctx;
	void *eap_sim_db_priv;
	struct radius_server_data *radius_srv;

	int parameter_set_count;

#ifdef CONFIG_FULL_DYNAMIC_VLAN
	struct full_dynamic_vlan *full_dynamic_vlan;
#endif /* CONFIG_FULL_DYNAMIC_VLAN */

	struct l2_packet_data *l2;
	struct wps_context *wps;

#ifdef CONFIG_WPS
	u8 *wps_beacon_ie;
	size_t wps_beacon_ie_len;
	u8 *wps_probe_resp_ie;
	size_t wps_probe_resp_ie_len;
	unsigned int ap_pin_failures;
	struct upnp_wps_device_sm *wps_upnp;
#endif /* CONFIG_WPS */

	struct hostapd_probereq_cb *probereq_cb;
	size_t num_probereq_cb;
};


/**
 * struct hostapd_iface - hostapd per-interface data structure
 */
struct hostapd_iface {
	void *owner;
	char *config_fname;
	struct hostapd_config *conf;

	size_t num_bss;
	struct hostapd_data **bss;

	int num_ap; /* number of entries in ap_list */
	struct ap_info *ap_list; /* AP info list head */
	struct ap_info *ap_hash[STA_HASH_SIZE];
	struct ap_info *ap_iter_list;

	struct hostapd_hw_modes *hw_features;
	int num_hw_features;
	struct hostapd_hw_modes *current_mode;
	/* Rates that are currently used (i.e., filtered copy of
	 * current_mode->channels */
	int num_rates;
	struct hostapd_rate_data *current_rates;

	u16 hw_flags;

	/* Number of associated Non-ERP stations (i.e., stations using 802.11b
	 * in 802.11g BSS) */
	int num_sta_non_erp;

	/* Number of associated stations that do not support Short Slot Time */
	int num_sta_no_short_slot_time;

	/* Number of associated stations that do not support Short Preamble */
	int num_sta_no_short_preamble;

	int olbc; /* Overlapping Legacy BSS Condition */

	/* Number of HT associated stations that do not support greenfield */
	int num_sta_ht_no_gf;

	/* Number of associated non-HT stations */
	int num_sta_no_ht;

	/* Number of HT associated stations 20 MHz */
	int num_sta_ht_20mhz;

	/* Overlapping BSS information */
	int olbc_ht;

	u16 ht_op_mode;
	void (*scan_cb)(struct hostapd_iface *iface);
};

int hostapd_reload_config(struct hostapd_iface *iface);
struct hostapd_data *
hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
		       struct hostapd_config *conf,
		       struct hostapd_bss_config *bss);
int hostapd_setup_interface(struct hostapd_iface *iface);
int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
void hostapd_interface_deinit(struct hostapd_iface *iface);
int handle_reload_iface(struct hostapd_iface *iface, void *ctx);
int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx);

int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
					 void *ctx), void *ctx);

int hostapd_register_probereq_cb(struct hostapd_data *hapd,
				 void (*cb)(void *ctx, const u8 *sa,
					    const u8 *ie, size_t ie_len),
				 void *ctx);

#endif /* HOSTAPD_H */
