68e8e04e93
o major overhaul of the way channels are handled: channels are now
fully enumerated and uniquely identify the operating characteristics;
these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
background scanning and roaming
o move scanning support into loadable modules based on the operating
mode to enable different policies and reduce the memory footprint
on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
we use a simple algorithm to trigger a roam: we threshold the rssi
and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
drivers but is incomplete; it's included now to establish a baseline
for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
encapsulation (note this can be used with any card that can tx+rx
large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
authentication and association failures
o enable the addition of sta mode power save support for drivers that need
net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
index into the rate set; this needs to be extended to deal with
multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing
Drivers:
o ath: add support for bg scanning, tx fragmentation, fast frames,
dynamic turbo (lightly tested), 11n (sniffing only and needs
new hal)
o awi: compile tested only
o ndis: lightly tested
o ipw: lightly tested
o iwi: add support for bg scanning (well tested but may have some
rough edges)
o ral, ural, rum: add suppoort for bg scanning, calibrate rssi data
o wi: lightly tested
This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others. Much of the scanning work was supported by
Atheros. The 11n work was supported by Marvell.
114 lines
4.7 KiB
C
114 lines
4.7 KiB
C
/*-
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* Copyright (c) 2007 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET80211_IEEE80211_HT_H_
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#define _NET80211_IEEE80211_HT_H_
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/*
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* 802.11n protocol implementation definitions.
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*/
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#define IEEE80211_SEND_ACTION(_ni,_cat, _act, _args) \
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((*(_ic)->ic_send_action)(_ni, _cat, _act, _args))
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#define IEEE80211_AGGR_BAWMAX 64 /* max block ack window size */
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typedef uint16_t ieee80211_seq;
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struct ieee80211_tx_ampdu {
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u_short txa_flags;
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#define IEEE80211_AGGR_IMMEDIATE 0x0001 /* BA policy */
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#define IEEE80211_AGGR_XCHGPEND 0x0002 /* ADDBA response pending */
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#define IEEE80211_AGGR_RUNNING 0x0004 /* ADDBA response received */
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#define IEEE80211_AGGR_SETUP 0x0008 /* deferred state setup */
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uint8_t txa_ac;
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uint8_t txa_token; /* dialog token */
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int txa_qbytes; /* data queued (bytes) */
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short txa_qframes; /* data queued (frames) */
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ieee80211_seq txa_seqstart;
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ieee80211_seq txa_start;
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uint16_t txa_wnd; /* BA window size */
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uint8_t txa_attempts; /* # setup attempts */
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int txa_lastrequest;/* time of last ADDBA request */
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struct ifqueue txa_q; /* packet queue */
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struct callout txa_timer;
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};
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/* return non-zero if AMPDU tx for the TID is running */
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#define IEEE80211_AMPDU_RUNNING(tap) \
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(((tap)->txa_flags & IEEE80211_AGGR_RUNNING) != 0)
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/* return non-zero if AMPDU tx for the TID is running or started */
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#define IEEE80211_AMPDU_REQUESTED(tap) \
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(((tap)->txa_flags & \
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(IEEE80211_AGGR_RUNNING|IEEE80211_AGGR_XCHGPEND)) != 0)
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struct ieee80211_rx_ampdu {
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int rxa_flags;
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int rxa_qbytes; /* data queued (bytes) */
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short rxa_qframes; /* data queued (frames) */
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ieee80211_seq rxa_seqstart;
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ieee80211_seq rxa_start; /* start of current BA window */
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ieee80211_seq rxa_nxt; /* next seq# in BA window */
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uint16_t rxa_wnd; /* BA window size */
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struct mbuf *rxa_m[IEEE80211_AGGR_BAWMAX];
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};
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void ieee80211_ht_attach(struct ieee80211com *);
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void ieee80211_ht_detach(struct ieee80211com *);
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void ieee80211_ht_announce(struct ieee80211com *);
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extern const int ieee80211_htrates[16];
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const struct ieee80211_htrateset *ieee80211_get_suphtrates(
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struct ieee80211com *, const struct ieee80211_channel *);
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struct ieee80211_node;
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int ieee80211_setup_htrates(struct ieee80211_node *,
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const uint8_t *htcap, int flags);
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void ieee80211_setup_basic_htrates(struct ieee80211_node *,
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const uint8_t *htinfo);
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struct mbuf *ieee80211_decap_amsdu(struct ieee80211_node *, struct mbuf *);
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int ieee80211_ampdu_reorder(struct ieee80211_node *, struct mbuf *);
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void ieee80211_recv_bar(struct ieee80211_node *, struct mbuf *);
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void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *);
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void ieee80211_ht_node_cleanup(struct ieee80211_node *);
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void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *);
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void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *);
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void ieee80211_recv_action(struct ieee80211_node *,
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const uint8_t *, const uint8_t *);
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int ieee80211_ampdu_request(struct ieee80211_node *,
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struct ieee80211_tx_ampdu *);
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int ieee80211_send_bar(struct ieee80211_node *,
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const struct ieee80211_tx_ampdu *);
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int ieee80211_send_action(struct ieee80211_node *,
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int, int, uint16_t [4]);
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uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *);
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uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *);
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uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *);
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uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *);
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#endif /* _NET80211_IEEE80211_HT_H_ */
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