1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 2007 Sam Leffler, Errno Consulting 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _SYS_NET80211_HT_H 32 #define _SYS_NET80211_HT_H 33 34 /* 35 * 802.11n protocol implementation definitions. 36 */ 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 struct ieee80211com; 43 struct ieee80211_node; 44 struct ieee80211_channel; 45 46 #define IEEE80211_AGGR_BAWMAX 64 /* max block ack window size */ 47 /* threshold for aging overlapping non-HT bss */ 48 #define IEEE80211_NONHT_PRESENT_AGE (60*1000) /* msec */ 49 50 #define M_AMPDU 0x8000 /* A-MPDU processing done */ 51 #define M_WEP 0x4000 /* WEP done by hardware */ 52 #define M_80211_RX (M_AMPDU | M_WEP) 53 54 typedef uint16_t ieee80211_seq; 55 56 struct ieee80211_tx_ampdu { 57 ushort_t txa_flags; 58 #define IEEE80211_AGGR_IMMEDIATE 0x0001 /* BA policy */ 59 #define IEEE80211_AGGR_XCHGPEND 0x0002 /* ADDBA response pending */ 60 #define IEEE80211_AGGR_RUNNING 0x0004 /* ADDBA response received */ 61 #define IEEE80211_AGGR_SETUP 0x0008 /* deferred state setup */ 62 #define IEEE80211_AGGR_NAK 0x0010 /* peer NAK'd ADDBA request */ 63 uint8_t txa_ac; 64 uint8_t txa_token; /* dialog token */ 65 int txa_qbytes; /* data queued (bytes) */ 66 short txa_qframes; /* data queued (frames) */ 67 ieee80211_seq txa_seqstart; 68 ieee80211_seq txa_start; 69 uint16_t txa_wnd; /* BA window size */ 70 uint8_t txa_attempts; /* # setup attempts */ 71 clock_t txa_lastrequest; /* time of last ADDBA request */ 72 timeout_id_t txa_timer; 73 }; 74 75 /* return non-zero if AMPDU tx for the TID is running */ 76 #define IEEE80211_AMPDU_RUNNING(tap) \ 77 (((tap)->txa_flags & IEEE80211_AGGR_RUNNING) != 0) 78 79 /* return non-zero if AMPDU tx for the TID is running or started */ 80 #define IEEE80211_AMPDU_REQUESTED(tap) \ 81 (((tap)->txa_flags & (IEEE80211_AGGR_RUNNING | \ 82 IEEE80211_AGGR_XCHGPEND | IEEE80211_AGGR_NAK)) != 0) 83 84 struct ieee80211_rx_ampdu { 85 int rxa_flags; 86 int rxa_qbytes; /* data queued (bytes) */ 87 short rxa_qframes; /* data queued (frames) */ 88 ieee80211_seq rxa_seqstart; 89 ieee80211_seq rxa_start; /* start of current BA window */ 90 uint16_t rxa_wnd; /* BA window size */ 91 clock_t rxa_age; /* age of oldest frame in window */ 92 int rxa_nframes; /* frames since ADDBA */ 93 mblk_t *rxa_m[IEEE80211_AGGR_BAWMAX]; 94 }; 95 96 void ieee80211_ht_attach(struct ieee80211com *); 97 void ieee80211_ht_detach(struct ieee80211com *); 98 99 void ieee80211_ht_announce(struct ieee80211com *); 100 101 extern const int ieee80211_htrates[16]; 102 const struct ieee80211_htrateset *ieee80211_get_suphtrates( 103 struct ieee80211com *, const struct ieee80211_channel *); 104 105 int ieee80211_setup_htrates(struct ieee80211_node *, 106 const uint8_t *htcap, int flags); 107 void ieee80211_setup_basic_htrates(struct ieee80211_node *, 108 const uint8_t *htinfo); 109 110 mblk_t *ieee80211_decap_amsdu(struct ieee80211_node *, mblk_t *); 111 112 int ieee80211_ampdu_reorder(struct ieee80211_node *, mblk_t *); 113 void ieee80211_recv_bar(struct ieee80211_node *, mblk_t *); 114 void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *); 115 void ieee80211_ht_node_cleanup(struct ieee80211_node *); 116 struct ieee80211_channel *ieee80211_ht_adjust_channel(struct ieee80211com *, 117 struct ieee80211_channel *, int); 118 119 void ieee80211_ht_wds_init(struct ieee80211_node *); 120 void ieee80211_ht_node_join(struct ieee80211_node *); 121 void ieee80211_ht_node_leave(struct ieee80211_node *); 122 void ieee80211_htinfo_update(struct ieee80211com *, int protmode); 123 void ieee80211_ht_timeout(struct ieee80211com *); 124 void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *); 125 void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *); 126 void ieee80211_recv_action(struct ieee80211_node *, 127 const uint8_t *, const uint8_t *); 128 int ieee80211_ampdu_request(struct ieee80211_node *, 129 struct ieee80211_tx_ampdu *); 130 void ieee80211_ampdu_stop(struct ieee80211_node *, 131 struct ieee80211_tx_ampdu *); 132 int ieee80211_send_bar(struct ieee80211_node *, 133 const struct ieee80211_tx_ampdu *); 134 int ieee80211_send_action(struct ieee80211_node *, int, int, uint16_t [4]); 135 136 uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *); 137 uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *); 138 uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *); 139 uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *); 140 141 struct ieee80211_beacon_offsets; 142 void ieee80211_ht_update_beacon(struct ieee80211com *, 143 struct ieee80211_beacon_offsets *); 144 145 #ifdef __cplusplus 146 } 147 #endif 148 149 #endif /* _SYS_NET80211_HT_H */ 150