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      1 /*
      2  * WPA Supplicant - PeerKey for Direct Link Setup (DLS)
      3  * Copyright (c) 2006-2008, Jouni Malinen <j (at) w1.fi>
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #ifndef PEERKEY_H
     10 #define PEERKEY_H
     11 
     12 #define PEERKEY_MAX_IE_LEN 80
     13 struct wpa_peerkey {
     14 	struct wpa_peerkey *next;
     15 	int initiator; /* whether this end was initator for SMK handshake */
     16 	u8 addr[ETH_ALEN]; /* other end MAC address */
     17 	u8 inonce[WPA_NONCE_LEN]; /* Initiator Nonce */
     18 	u8 pnonce[WPA_NONCE_LEN]; /* Peer Nonce */
     19 	u8 rsnie_i[PEERKEY_MAX_IE_LEN]; /* Initiator RSN IE */
     20 	size_t rsnie_i_len;
     21 	u8 rsnie_p[PEERKEY_MAX_IE_LEN]; /* Peer RSN IE */
     22 	size_t rsnie_p_len;
     23 	u8 smk[PMK_LEN];
     24 	int smk_complete;
     25 	u8 smkid[PMKID_LEN];
     26 	u32 lifetime;
     27 	os_time_t expiration;
     28 	int cipher; /* Selected cipher (WPA_CIPHER_*) */
     29 	u8 replay_counter[WPA_REPLAY_COUNTER_LEN];
     30 	int replay_counter_set;
     31 	int use_sha256; /* whether AKMP indicate SHA256-based derivations */
     32 
     33 	struct wpa_ptk stk, tstk;
     34 	int stk_set, tstk_set;
     35 };
     36 
     37 
     38 #ifdef CONFIG_PEERKEY
     39 
     40 int peerkey_verify_eapol_key_mic(struct wpa_sm *sm,
     41 				 struct wpa_peerkey *peerkey,
     42 				 struct wpa_eapol_key *key, u16 ver,
     43 				 const u8 *buf, size_t len);
     44 void peerkey_rx_eapol_4way(struct wpa_sm *sm, struct wpa_peerkey *peerkey,
     45 			   struct wpa_eapol_key *key, u16 key_info, u16 ver);
     46 void peerkey_rx_eapol_smk(struct wpa_sm *sm, const u8 *src_addr,
     47 			  struct wpa_eapol_key *key, size_t extra_len,
     48 			  u16 key_info, u16 ver);
     49 void peerkey_deinit(struct wpa_sm *sm);
     50 
     51 #else /* CONFIG_PEERKEY */
     52 
     53 static inline int
     54 peerkey_verify_eapol_key_mic(struct wpa_sm *sm,
     55 			     struct wpa_peerkey *peerkey,
     56 			     struct wpa_eapol_key *key, u16 ver,
     57 			     const u8 *buf, size_t len)
     58 {
     59 	return -1;
     60 }
     61 
     62 static inline void
     63 peerkey_rx_eapol_4way(struct wpa_sm *sm, struct wpa_peerkey *peerkey,
     64 		      struct wpa_eapol_key *key, u16 key_info, u16 ver)
     65 {
     66 }
     67 
     68 static inline void
     69 peerkey_rx_eapol_smk(struct wpa_sm *sm, const u8 *src_addr,
     70 		     struct wpa_eapol_key *key, size_t extra_len,
     71 		     u16 key_info, u16 ver)
     72 {
     73 }
     74 
     75 static inline void peerkey_deinit(struct wpa_sm *sm)
     76 {
     77 }
     78 
     79 #endif /* CONFIG_PEERKEY */
     80 
     81 #endif /* PEERKEY_H */
     82