text: /*	$OpenBSD: ieee80211_priv.h,v 1.5 2009/01/26 19:09:41 damien Exp $	*/
  
  /*-
   * Copyright (c) 2008 Damien Bergamini <damien.bergamini@free.fr>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #ifndef _NET80211_IEEE80211_PRIV_H_
  #define _NET80211_IEEE80211_PRIV_H_
  
  #ifdef IEEE80211_DEBUG
  extern int ieee80211_debug;
  #define DPRINTF(X) do {				\
  	if (ieee80211_debug) {			\
  		printf("%s: ", __func__);	\
  		printf X;			\
  	}					\
  } while(0)
  #else
  #define DPRINTF(X)
  #endif
  
  #define SEQ_LT(a,b)	\
  	((((u_int16_t)(a) - (u_int16_t)(b)) & 0xfff) > 2048)
  
  #define IEEE80211_AID_SET(b, w) \
  	((w)[IEEE80211_AID(b) / 32] |= (1 << (IEEE80211_AID(b) % 32)))
  #define IEEE80211_AID_CLR(b, w) \
  	((w)[IEEE80211_AID(b) / 32] &= ~(1 << (IEEE80211_AID(b) % 32)))
  #define IEEE80211_AID_ISSET(b, w) \
  	((w)[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32)))
  
  #define IEEE80211_RSNIE_MAXLEN						\
  	(2 +		/* Version */					\
  	 4 +		/* Group Data Cipher Suite */			\
  	 2 +		/* Pairwise Cipher Suite Count */		\
  	 4 * 2 +	/* Pairwise Cipher Suite List (max 2) */	\
  	 2 +		/* AKM Suite List Count */			\
  	 4 * 4 +	/* AKM Suite List (max 4) */			\
  	 2 +		/* RSN Capabilities */				\
  	 2 +		/* PMKID Count */				\
  	 16 * 1 +	/* PMKID List (max 1) */			\
  	 4)		/* 11w: Group Integrity Cipher Suite */
  
  #define IEEE80211_WPAIE_MAXLEN						\
  	(4 +		/* MICROSOFT_OUI */				\
  	 2 +		/* Version */					\
  	 4 +		/* Group Cipher Suite */			\
  	 2 +		/* Pairwise Cipher Suite Count */		\
  	 4 * 2 +	/* Pairwise Cipher Suite List (max 2) */	\
  	 2 +		/* AKM Suite List Count */			\
  	 4 * 2)		/* AKM Suite List (max 2) */
  
  struct ieee80211_rsnparams {
  	u_int16_t		rsn_nakms;
  	u_int32_t		rsn_akms;
  	u_int16_t		rsn_nciphers;
  	u_int32_t		rsn_ciphers;
  	enum ieee80211_cipher	rsn_groupcipher;
  	enum ieee80211_cipher	rsn_groupmgmtcipher;
  	u_int16_t		rsn_caps;
  	u_int8_t		rsn_npmkids;
  	const u_int8_t		*rsn_pmkids;
  };
  
  /* unaligned big endian access */
  #define BE_READ_2(p)				\
  	((u_int16_t)				\
           ((((const u_int8_t *)(p))[0] << 8) |	\
            (((const u_int8_t *)(p))[1])))
  
  #define BE_READ_8(p)						\
  	((u_int64_t)(p)[0] << 56 | (u_int64_t)(p)[1] << 48 |	\
  	 (u_int64_t)(p)[2] << 40 | (u_int64_t)(p)[3] << 32 |	\
  	 (u_int64_t)(p)[4] << 24 | (u_int64_t)(p)[5] << 16 |	\
  	 (u_int64_t)(p)[6] <<  8 | (u_int64_t)(p)[7])
  
  #define BE_WRITE_2(p, v) do {			\
  	((u_int8_t *)(p))[0] = (v) >> 8;	\
  	((u_int8_t *)(p))[1] = (v) & 0xff;	\
  } while (0)
  
  #define BE_WRITE_8(p, v) do {			\
  	(p)[0] = (v) >> 56; (p)[1] = (v) >> 48;	\
  	(p)[2] = (v) >> 40; (p)[3] = (v) >> 32;	\
  	(p)[4] = (v) >> 24; (p)[5] = (v) >> 16;	\
  	(p)[6] = (v) >>  8; (p)[7] = (v);	\
  } while (0)
  
  /* unaligned little endian access */
  #define LE_READ_2(p)					\
  	((u_int16_t)					\
  	 ((((const u_int8_t *)(p))[0]) |		\
  	  (((const u_int8_t *)(p))[1] <<  8)))
  
  #define LE_READ_4(p)					\
  	((u_int32_t)					\
  	 ((((const u_int8_t *)(p))[0])       |		\
  	  (((const u_int8_t *)(p))[1] <<  8) |		\
  	  (((const u_int8_t *)(p))[2] << 16) |		\
  	  (((const u_int8_t *)(p))[3] << 24)))
  
  #define LE_READ_6(p)						\
  	((u_int64_t)(p)[5] << 40 | (u_int64_t)(p)[4] << 32 |	\
  	 (u_int64_t)(p)[3] << 24 | (u_int64_t)(p)[2] << 16 |	\
  	 (u_int64_t)(p)[1] <<  8 | (u_int64_t)(p)[0])
  
  #define LE_WRITE_2(p, v) do {			\
  	((u_int8_t *)(p))[0] = (v) & 0xff;	\
  	((u_int8_t *)(p))[1] = (v) >> 8;	\
  } while (0)
  
  #define LE_WRITE_4(p, v) do {			\
  	(p)[3] = (v) >> 24; (p)[2] = (v) >> 16;	\
  	(p)[1] = (v) >>  8; (p)[0] = (v);	\
  } while (0)
  
  #define LE_WRITE_6(p, v) do {			\
  	(p)[5] = (v) >> 40; (p)[4] = (v) >> 32;	\
  	(p)[3] = (v) >> 24; (p)[2] = (v) >> 16;	\
  	(p)[1] = (v) >>  8; (p)[0] = (v);	\
  } while (0)
  
  #endif /* _NET80211_IEEE80211_PRIV_H_ */
  