ieee80211_ht.h revision 175880
1/*- 2 * Copyright (c) 2007 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD: head/sys/net80211/ieee80211_ht.h 175880 2008-02-02 00:38:02Z sam $ 26 */ 27#ifndef _NET80211_IEEE80211_HT_H_ 28#define _NET80211_IEEE80211_HT_H_ 29 30/* 31 * 802.11n protocol implementation definitions. 32 */ 33 34#define IEEE80211_AGGR_BAWMAX 64 /* max block ack window size */ 35/* threshold for aging overlapping non-HT bss */ 36#define IEEE80211_NONHT_PRESENT_AGE msecs_to_ticks(60*1000) 37 38typedef uint16_t ieee80211_seq; 39 40struct ieee80211_tx_ampdu { 41 u_short txa_flags; 42#define IEEE80211_AGGR_IMMEDIATE 0x0001 /* BA policy */ 43#define IEEE80211_AGGR_XCHGPEND 0x0002 /* ADDBA response pending */ 44#define IEEE80211_AGGR_RUNNING 0x0004 /* ADDBA response received */ 45#define IEEE80211_AGGR_SETUP 0x0008 /* deferred state setup */ 46#define IEEE80211_AGGR_NAK 0x0010 /* peer NAK'd ADDBA request */ 47 uint8_t txa_ac; 48 uint8_t txa_token; /* dialog token */ 49 int txa_qbytes; /* data queued (bytes) */ 50 short txa_qframes; /* data queued (frames) */ 51 ieee80211_seq txa_seqstart; 52 ieee80211_seq txa_start; 53 uint16_t txa_wnd; /* BA window size */ 54 uint8_t txa_attempts; /* # setup attempts */ 55 int txa_lastrequest;/* time of last ADDBA request */ 56 struct ifqueue txa_q; /* packet queue */ 57 struct callout txa_timer; 58 void *txa_private; /* driver-private storage */ 59}; 60 61/* return non-zero if AMPDU tx for the TID is running */ 62#define IEEE80211_AMPDU_RUNNING(tap) \ 63 (((tap)->txa_flags & IEEE80211_AGGR_RUNNING) != 0) 64 65/* return non-zero if AMPDU tx for the TID is running or started */ 66#define IEEE80211_AMPDU_REQUESTED(tap) \ 67 (((tap)->txa_flags & \ 68 (IEEE80211_AGGR_RUNNING|IEEE80211_AGGR_XCHGPEND|IEEE80211_AGGR_NAK)) != 0) 69 70struct ieee80211_rx_ampdu { 71 int rxa_flags; 72 int rxa_qbytes; /* data queued (bytes) */ 73 short rxa_qframes; /* data queued (frames) */ 74 ieee80211_seq rxa_seqstart; 75 ieee80211_seq rxa_start; /* start of current BA window */ 76 uint16_t rxa_wnd; /* BA window size */ 77 int rxa_age; /* age of oldest frame in window */ 78 int rxa_nframes; /* frames since ADDBA */ 79 struct mbuf *rxa_m[IEEE80211_AGGR_BAWMAX]; 80}; 81 82void ieee80211_ht_attach(struct ieee80211com *); 83void ieee80211_ht_detach(struct ieee80211com *); 84 85void ieee80211_ht_announce(struct ieee80211com *); 86 87extern const int ieee80211_htrates[16]; 88const struct ieee80211_htrateset *ieee80211_get_suphtrates( 89 struct ieee80211com *, const struct ieee80211_channel *); 90 91struct ieee80211_node; 92int ieee80211_setup_htrates(struct ieee80211_node *, 93 const uint8_t *htcap, int flags); 94void ieee80211_setup_basic_htrates(struct ieee80211_node *, 95 const uint8_t *htinfo); 96struct mbuf *ieee80211_decap_amsdu(struct ieee80211_node *, struct mbuf *); 97int ieee80211_ampdu_reorder(struct ieee80211_node *, struct mbuf *); 98void ieee80211_recv_bar(struct ieee80211_node *, struct mbuf *); 99void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *); 100void ieee80211_ht_node_cleanup(struct ieee80211_node *); 101struct ieee80211_channel *ieee80211_ht_adjust_channel(struct ieee80211com *, 102 struct ieee80211_channel *, int); 103void ieee80211_ht_wds_init(struct ieee80211_node *); 104void ieee80211_ht_node_join(struct ieee80211_node *); 105void ieee80211_ht_node_leave(struct ieee80211_node *); 106void ieee80211_htinfo_update(struct ieee80211com *, int protmode); 107void ieee80211_ht_timeout(struct ieee80211com *); 108void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *); 109void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *); 110void ieee80211_recv_action(struct ieee80211_node *, 111 const uint8_t *, const uint8_t *); 112int ieee80211_ampdu_request(struct ieee80211_node *, 113 struct ieee80211_tx_ampdu *); 114void ieee80211_ampdu_stop(struct ieee80211_node *, 115 struct ieee80211_tx_ampdu *); 116int ieee80211_send_bar(struct ieee80211_node *, 117 const struct ieee80211_tx_ampdu *); 118int ieee80211_send_action(struct ieee80211_node *, 119 int, int, uint16_t [4]); 120uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *); 121uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *); 122uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *); 123uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *); 124struct ieee80211_beacon_offsets; 125void ieee80211_ht_update_beacon(struct ieee80211com *, 126 struct ieee80211_beacon_offsets *); 127#endif /* _NET80211_IEEE80211_HT_H_ */ 128