src/rsn_supp/wpa_i.h

   1 /*
   2  * wpa_supplicant - Internal WPA state machine definitions
   3  * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #ifndef WPA_I_H
  16 #define WPA_I_H
  17
  18 struct rsn_pmksa_candidate;
  19 struct wpa_peerkey;
  20 struct wpa_eapol_key;
  21
  22 /**
  23  * struct wpa_sm - Internal WPA state machine data
  24  */
  25 struct wpa_sm {
  26         u8 pmk[PMK_LEN];
  27         size_t pmk_len;
  28         struct wpa_ptk ptk, tptk;
  29         int ptk_set, tptk_set;
  30         u8 snonce[WPA_NONCE_LEN];
  31         u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
  32         int renew_snonce;
  33         u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
  34         int rx_replay_counter_set;
  35         u8 request_counter[WPA_REPLAY_COUNTER_LEN];
  36
  37         struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
  38
  39         struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
  40         struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */
  41         struct rsn_pmksa_candidate *pmksa_candidates;
  42
  43         struct l2_packet_data *l2_preauth;
  44         struct l2_packet_data *l2_preauth_br;
  45         u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or
  46                                      * 00:00:00:00:00:00 if no pre-auth is
  47                                      * in progress */
  48         struct eapol_sm *preauth_eapol;
  49
  50         struct wpa_sm_ctx *ctx;
  51
  52         void *scard_ctx; /* context for smartcard callbacks */
  53         int fast_reauth; /* whether EAP fast re-authentication is enabled */
  54
  55         void *network_ctx;
  56         int peerkey_enabled;
  57         int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */
  58         int proactive_key_caching;
  59         int eap_workaround;
  60         void *eap_conf_ctx;
  61         u8 ssid[32];
  62         size_t ssid_len;
  63         int wpa_ptk_rekey;
  64
  65         u8 own_addr[ETH_ALEN];
  66         const char *ifname;
  67         const char *bridge_ifname;
  68         u8 bssid[ETH_ALEN];
  69
  70         unsigned int dot11RSNAConfigPMKLifetime;
  71         unsigned int dot11RSNAConfigPMKReauthThreshold;
  72         unsigned int dot11RSNAConfigSATimeout;
  73
  74         unsigned int dot11RSNA4WayHandshakeFailures;
  75
  76         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
  77         unsigned int proto;
  78         unsigned int pairwise_cipher;
  79         unsigned int group_cipher;
  80         unsigned int key_mgmt;
  81         unsigned int mgmt_group_cipher;
  82
  83         int rsn_enabled; /* Whether RSN is enabled in configuration */
  84
  85         u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */
  86         size_t assoc_wpa_ie_len;
  87         u8 *ap_wpa_ie, *ap_rsn_ie;
  88         size_t ap_wpa_ie_len, ap_rsn_ie_len;
  89
  90 #ifdef CONFIG_PEERKEY
  91         struct wpa_peerkey *peerkey;
  92 #endif /* CONFIG_PEERKEY */
  93
  94 #ifdef CONFIG_IEEE80211R
  95         u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
  96         size_t xxkey_len;
  97         u8 pmk_r0[PMK_LEN];
  98         u8 pmk_r0_name[WPA_PMK_NAME_LEN];
  99         u8 pmk_r1[PMK_LEN];
 100         u8 pmk_r1_name[WPA_PMK_NAME_LEN];
 101         u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN];
 102         u8 r0kh_id[FT_R0KH_ID_MAX_LEN];
 103         size_t r0kh_id_len;
 104         u8 r1kh_id[FT_R1KH_ID_LEN];
 105         int ft_completed;
 106         int over_the_ds_in_progress;
 107         u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */
 108 #endif /* CONFIG_IEEE80211R */
 109 };
 110
 111
 112 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state)
 113 {
 114         WPA_ASSERT(sm->ctx->set_state);
 115         sm->ctx->set_state(sm->ctx->ctx, state);
 116 }
 117
 118 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm)
 119 {
 120         WPA_ASSERT(sm->ctx->get_state);
 121         return sm->ctx->get_state(sm->ctx->ctx);
 122 }
 123
 124 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code)
 125 {
 126         WPA_ASSERT(sm->ctx->deauthenticate);
 127         sm->ctx->deauthenticate(sm->ctx->ctx, reason_code);
 128 }
 129
 130 static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code)
 131 {
 132         WPA_ASSERT(sm->ctx->disassociate);
 133         sm->ctx->disassociate(sm->ctx->ctx, reason_code);
 134 }
 135
 136 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg,
 137                                  const u8 *addr, int key_idx, int set_tx,
 138                                  const u8 *seq, size_t seq_len,
 139                                  const u8 *key, size_t key_len)
 140 {
 141         WPA_ASSERT(sm->ctx->set_key);
 142         return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx,
 143                                 seq, seq_len, key, key_len);
 144 }
 145
 146 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm)
 147 {
 148         WPA_ASSERT(sm->ctx->get_network_ctx);
 149         return sm->ctx->get_network_ctx(sm->ctx->ctx);
 150 }
 151
 152 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid)
 153 {
 154         WPA_ASSERT(sm->ctx->get_bssid);
 155         return sm->ctx->get_bssid(sm->ctx->ctx, bssid);
 156 }
 157
 158 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest,
 159                                     u16 proto, const u8 *buf, size_t len)
 160 {
 161         WPA_ASSERT(sm->ctx->ether_send);
 162         return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len);
 163 }
 164
 165 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm)
 166 {
 167         WPA_ASSERT(sm->ctx->get_beacon_ie);
 168         return sm->ctx->get_beacon_ie(sm->ctx->ctx);
 169 }
 170
 171 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm)
 172 {
 173         WPA_ASSERT(sm->ctx->cancel_auth_timeout);
 174         sm->ctx->cancel_auth_timeout(sm->ctx->ctx);
 175 }
 176
 177 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type,
 178                                       const void *data, u16 data_len,
 179                                       size_t *msg_len, void **data_pos)
 180 {
 181         WPA_ASSERT(sm->ctx->alloc_eapol);
 182         return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len,
 183                                     msg_len, data_pos);
 184 }
 185
 186 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid,
 187                                    const u8 *pmkid)
 188 {
 189         WPA_ASSERT(sm->ctx->add_pmkid);
 190         return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid);
 191 }
 192
 193 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid,
 194                                       const u8 *pmkid)
 195 {
 196         WPA_ASSERT(sm->ctx->remove_pmkid);
 197         return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid);
 198 }
 199
 200 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr,
 201                                             int protect_type, int key_type)
 202 {
 203         WPA_ASSERT(sm->ctx->mlme_setprotection);
 204         return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type,
 205                                            key_type);
 206 }
 207
 208 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md,
 209                                        const u8 *ies, size_t ies_len)
 210 {
 211         if (sm->ctx->update_ft_ies)
 212                 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len);
 213         return -1;
 214 }
 215
 216 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action,
 217                                         const u8 *target_ap,
 218                                         const u8 *ies, size_t ies_len)
 219 {
 220         if (sm->ctx->send_ft_action)
 221                 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap,
 222                                                ies, ies_len);
 223         return -1;
 224 }
 225
 226
 227 void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck,
 228                         int ver, const u8 *dest, u16 proto,
 229                         u8 *msg, size_t msg_len, u8 *key_mic);
 230 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst,
 231                                const struct wpa_eapol_key *key,
 232                                int ver, const u8 *nonce,
 233                                const u8 *wpa_ie, size_t wpa_ie_len,
 234                                struct wpa_ptk *ptk);
 235 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst,
 236                                const struct wpa_eapol_key *key,
 237                                u16 ver, u16 key_info,
 238                                const u8 *kde, size_t kde_len,
 239                                struct wpa_ptk *ptk);
 240
 241 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr,
 242                       const struct wpa_eapol_key *key,
 243                       struct wpa_ptk *ptk, size_t ptk_len);
 244
 245 #endif /* WPA_I_H */