dist/wpa/hostapd/hostapd.h

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Host AP kernel driver
   4  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #ifndef HOSTAPD_H
  17 #define HOSTAPD_H
  18
  19 #include "common.h"
  20 #include "ap.h"
  21
  22 #ifndef ETH_ALEN
  23 #define ETH_ALEN 6
  24 #endif
  25 #ifndef IFNAMSIZ
  26 #define IFNAMSIZ 16
  27 #endif
  28 #ifndef ETH_P_ALL
  29 #define ETH_P_ALL 0x0003
  30 #endif
  31 #ifndef ETH_P_PAE
  32 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
  33 #endif /* ETH_P_PAE */
  34 #ifndef ETH_P_EAPOL
  35 #define ETH_P_EAPOL ETH_P_PAE
  36 #endif /* ETH_P_EAPOL */
  37
  38 #ifndef ETH_P_RRB
  39 #define ETH_P_RRB 0x890D
  40 #endif /* ETH_P_RRB */
  41
  42 #include "config.h"
  43
  44 #ifdef _MSC_VER
  45 #pragma pack(push, 1)
  46 #endif /* _MSC_VER */
  47
  48 #define MAX_VLAN_ID 4094
  49
  50 struct ieee8023_hdr {
  51         u8 dest[6];
  52         u8 src[6];
  53         u16 ethertype;
  54 } STRUCT_PACKED;
  55
  56
  57 struct ieee80211_hdr {
  58         le16 frame_control;
  59         le16 duration_id;
  60         u8 addr1[6];
  61         u8 addr2[6];
  62         u8 addr3[6];
  63         le16 seq_ctrl;
  64         /* followed by 'u8 addr4[6];' if ToDS and FromDS is set in data frame
  65          */
  66 } STRUCT_PACKED;
  67
  68 #ifdef _MSC_VER
  69 #pragma pack(pop)
  70 #endif /* _MSC_VER */
  71
  72 #define IEEE80211_DA_FROMDS addr1
  73 #define IEEE80211_BSSID_FROMDS addr2
  74 #define IEEE80211_SA_FROMDS addr3
  75
  76 #define IEEE80211_HDRLEN (sizeof(struct ieee80211_hdr))
  77
  78 #define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
  79
  80 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
  81  * frames that might be longer than normal default MTU and they are not
  82  * fragmented */
  83 #define HOSTAPD_MTU 2290
  84
  85 extern unsigned char rfc1042_header[6];
  86
  87 struct hostap_sta_driver_data {
  88         unsigned long rx_packets, tx_packets, rx_bytes, tx_bytes;
  89         unsigned long current_tx_rate;
  90         unsigned long inactive_msec;
  91         unsigned long flags;
  92         unsigned long num_ps_buf_frames;
  93         unsigned long tx_retry_failed;
  94         unsigned long tx_retry_count;
  95         int last_rssi;
  96         int last_ack_rssi;
  97 };
  98
  99 struct wpa_driver_ops;
 100 struct wpa_ctrl_dst;
 101 struct radius_server_data;
 102
 103 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 104 struct full_dynamic_vlan;
 105 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 106
 107 /**
 108  * struct hostapd_data - hostapd per-BSS data structure
 109  */
 110 struct hostapd_data {
 111         struct hostapd_iface *iface;
 112         struct hostapd_config *iconf;
 113         struct hostapd_bss_config *conf;
 114         int interface_added; /* virtual interface added for this BSS */
 115
 116         u8 own_addr[ETH_ALEN];
 117
 118         int num_sta; /* number of entries in sta_list */
 119         struct sta_info *sta_list; /* STA info list head */
 120         struct sta_info *sta_hash[STA_HASH_SIZE];
 121
 122         /* pointers to STA info; based on allocated AID or NULL if AID free
 123          * AID is in the range 1-2007, so sta_aid[0] corresponders to AID 1
 124          * and so on
 125          */
 126         struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
 127
 128         const struct wpa_driver_ops *driver;
 129         void *drv_priv;
 130
 131         u8 *default_wep_key;
 132         u8 default_wep_key_idx;
 133
 134         struct radius_client_data *radius;
 135         int radius_client_reconfigured;
 136         u32 acct_session_id_hi, acct_session_id_lo;
 137
 138         struct iapp_data *iapp;
 139
 140         enum { DO_NOT_ASSOC = 0, WAIT_BEACON, AUTHENTICATE, ASSOCIATE,
 141                ASSOCIATED } assoc_ap_state;
 142         char assoc_ap_ssid[33];
 143         int assoc_ap_ssid_len;
 144         u16 assoc_ap_aid;
 145
 146         struct hostapd_cached_radius_acl *acl_cache;
 147         struct hostapd_acl_query_data *acl_queries;
 148
 149         struct wpa_authenticator *wpa_auth;
 150         struct eapol_authenticator *eapol_auth;
 151
 152         struct rsn_preauth_interface *preauth_iface;
 153         time_t michael_mic_failure;
 154         int michael_mic_failures;
 155         int tkip_countermeasures;
 156
 157         int ctrl_sock;
 158         struct wpa_ctrl_dst *ctrl_dst;
 159
 160         void *ssl_ctx;
 161         void *eap_sim_db_priv;
 162         struct radius_server_data *radius_srv;
 163
 164         int parameter_set_count;
 165
 166 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 167         struct full_dynamic_vlan *full_dynamic_vlan;
 168 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 169
 170         struct l2_packet_data *l2;
 171 };
 172
 173
 174 /**
 175  * hostapd_iface_cb - Generic callback type for per-iface asynchronous requests
 176  * @iface: the interface the event occured on.
 177  * @status: 0 if the request succeeded; -1 if the request failed.
 178  */
 179 typedef void (*hostapd_iface_cb)(struct hostapd_iface *iface, int status);
 180
 181
 182 struct hostapd_config_change;
 183
 184 /**
 185  * struct hostapd_iface - hostapd per-interface data structure
 186  */
 187 struct hostapd_iface {
 188         char *config_fname;
 189         struct hostapd_config *conf;
 190
 191         hostapd_iface_cb setup_cb;
 192
 193         size_t num_bss;
 194         struct hostapd_data **bss;
 195
 196         int num_ap; /* number of entries in ap_list */
 197         struct ap_info *ap_list; /* AP info list head */
 198         struct ap_info *ap_hash[STA_HASH_SIZE];
 199         struct ap_info *ap_iter_list;
 200
 201         struct hostapd_hw_modes *hw_features;
 202         int num_hw_features;
 203         struct hostapd_hw_modes *current_mode;
 204         /* Rates that are currently used (i.e., filtered copy of
 205          * current_mode->channels */
 206         int num_rates;
 207         struct hostapd_rate_data *current_rates;
 208         hostapd_iface_cb hw_mode_sel_cb;
 209
 210         u16 hw_flags;
 211
 212         /* Number of associated Non-ERP stations (i.e., stations using 802.11b
 213          * in 802.11g BSS) */
 214         int num_sta_non_erp;
 215
 216         /* Number of associated stations that do not support Short Slot Time */
 217         int num_sta_no_short_slot_time;
 218
 219         /* Number of associated stations that do not support Short Preamble */
 220         int num_sta_no_short_preamble;
 221
 222         int olbc; /* Overlapping Legacy BSS Condition */
 223
 224         int dfs_enable;
 225         u8 pwr_const;
 226         unsigned int tx_power;
 227         unsigned int sta_max_power;
 228
 229         unsigned int channel_switch;
 230
 231         struct hostapd_config_change *change;
 232         hostapd_iface_cb reload_iface_cb;
 233         hostapd_iface_cb config_reload_cb;
 234 };
 235
 236 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 237                            int reassoc);
 238
 239 #endif /* HOSTAPD_H */