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/*-
* Copyright (c) 2007 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _NET80211_IEEE80211_HT_H_
#define _NET80211_IEEE80211_HT_H_
/*
* 802.11n protocol implementation definitions.
*/
#define IEEE80211_AGGR_BAWMAX 64 /* max block ack window size */
/* threshold for aging overlapping non-HT bss */
#define IEEE80211_NONHT_PRESENT_AGE msecs_to_ticks(60*1000)
typedef uint16_t ieee80211_seq;
struct ieee80211_tx_ampdu {
u_short txa_flags;
#define IEEE80211_AGGR_IMMEDIATE 0x0001 /* BA policy */
#define IEEE80211_AGGR_XCHGPEND 0x0002 /* ADDBA response pending */
#define IEEE80211_AGGR_RUNNING 0x0004 /* ADDBA response received */
#define IEEE80211_AGGR_SETUP 0x0008 /* deferred state setup */
#define IEEE80211_AGGR_NAK 0x0010 /* peer NAK'd ADDBA request */
uint8_t txa_ac;
uint8_t txa_token; /* dialog token */
int txa_qbytes; /* data queued (bytes) */
short txa_qframes; /* data queued (frames) */
ieee80211_seq txa_seqstart;
ieee80211_seq txa_start;
uint16_t txa_wnd; /* BA window size */
uint8_t txa_attempts; /* # setup attempts */
int txa_lastrequest;/* time of last ADDBA request */
struct ifqueue txa_q; /* packet queue */
struct callout txa_timer;
};
/* return non-zero if AMPDU tx for the TID is running */
#define IEEE80211_AMPDU_RUNNING(tap) \
(((tap)->txa_flags & IEEE80211_AGGR_RUNNING) != 0)
/* return non-zero if AMPDU tx for the TID is running or started */
#define IEEE80211_AMPDU_REQUESTED(tap) \
(((tap)->txa_flags & \
(IEEE80211_AGGR_RUNNING|IEEE80211_AGGR_XCHGPEND|IEEE80211_AGGR_NAK)) != 0)
struct ieee80211_rx_ampdu {
int rxa_flags;
int rxa_qbytes; /* data queued (bytes) */
short rxa_qframes; /* data queued (frames) */
ieee80211_seq rxa_seqstart;
ieee80211_seq rxa_start; /* start of current BA window */
uint16_t rxa_wnd; /* BA window size */
int rxa_age; /* age of oldest frame in window */
int rxa_nframes; /* frames since ADDBA */
struct mbuf *rxa_m[IEEE80211_AGGR_BAWMAX];
};
void ieee80211_ht_attach(struct ieee80211com *);
void ieee80211_ht_detach(struct ieee80211com *);
void ieee80211_ht_announce(struct ieee80211com *);
extern const int ieee80211_htrates[16];
const struct ieee80211_htrateset *ieee80211_get_suphtrates(
struct ieee80211com *, const struct ieee80211_channel *);
struct ieee80211_node;
int ieee80211_setup_htrates(struct ieee80211_node *,
const uint8_t *htcap, int flags);
void ieee80211_setup_basic_htrates(struct ieee80211_node *,
const uint8_t *htinfo);
struct mbuf *ieee80211_decap_amsdu(struct ieee80211_node *, struct mbuf *);
int ieee80211_ampdu_reorder(struct ieee80211_node *, struct mbuf *);
void ieee80211_recv_bar(struct ieee80211_node *, struct mbuf *);
void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *);
void ieee80211_ht_node_cleanup(struct ieee80211_node *);
struct ieee80211_channel *ieee80211_ht_adjust_channel(struct ieee80211com *,
struct ieee80211_channel *, int);
void ieee80211_ht_wds_init(struct ieee80211_node *);
void ieee80211_ht_node_join(struct ieee80211_node *);
void ieee80211_ht_node_leave(struct ieee80211_node *);
void ieee80211_htinfo_update(struct ieee80211com *, int protmode);
void ieee80211_ht_timeout(struct ieee80211com *);
void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *);
void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *);
void ieee80211_recv_action(struct ieee80211_node *,
const uint8_t *, const uint8_t *);
int ieee80211_ampdu_request(struct ieee80211_node *,
struct ieee80211_tx_ampdu *);
void ieee80211_ampdu_stop(struct ieee80211_node *,
struct ieee80211_tx_ampdu *);
int ieee80211_send_bar(struct ieee80211_node *,
const struct ieee80211_tx_ampdu *);
int ieee80211_send_action(struct ieee80211_node *,
int, int, uint16_t [4]);
uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *);
uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *);
uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *);
uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *);
struct ieee80211_beacon_offsets;
void ieee80211_ht_update_beacon(struct ieee80211com *,
struct ieee80211_beacon_offsets *);
#endif /* _NET80211_IEEE80211_HT_H_ */
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