f383e58f2e
IBSS negotiation is a subset of the STA/AP negotiation. We always have a current channel, so base the HT capabilities on the current channel. This is then put into IBSS probe requests to inform peers of our 11n capabilities.
228 lines
8.4 KiB
C
228 lines
8.4 KiB
C
/*-
|
|
* Copyright (c) 2007-2008 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)
|
|
|
|
struct ieee80211_tx_ampdu {
|
|
struct ieee80211_node *txa_ni; /* back pointer */
|
|
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 */
|
|
#define IEEE80211_AGGR_BARPEND 0x0020 /* BAR response pending */
|
|
uint8_t txa_tid;
|
|
uint8_t txa_token; /* dialog token */
|
|
int txa_lastsample; /* ticks @ last traffic sample */
|
|
int txa_pkts; /* packets over last sample interval */
|
|
int txa_avgpps; /* filtered traffic over window */
|
|
int txa_qbytes; /* data queued (bytes) */
|
|
short txa_qframes; /* data queued (frames) */
|
|
ieee80211_seq txa_start; /* BA window left edge */
|
|
ieee80211_seq txa_seqpending; /* new txa_start pending BAR response */
|
|
uint16_t txa_wnd; /* BA window size */
|
|
uint8_t txa_attempts; /* # ADDBA/BAR requests w/o a response*/
|
|
int txa_nextrequest;/* soonest to make next request */
|
|
struct callout txa_timer;
|
|
void *txa_private; /* driver-private storage */
|
|
uint64_t txa_pad[4];
|
|
};
|
|
|
|
/* 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 was NACKed */
|
|
#define IEEE80211_AMPDU_NACKED(tap)\
|
|
(!! ((tap)->txa_flags & IEEE80211_AGGR_NAK))
|
|
|
|
/* 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)
|
|
|
|
#define IEEE80211_AGGR_BITS \
|
|
"\20\1IMMEDIATE\2XCHGPEND\3RUNNING\4SETUP\5NAK"
|
|
|
|
/*
|
|
* Traffic estimator support. We estimate packets/sec for
|
|
* each AC that is setup for AMPDU or will potentially be
|
|
* setup for AMPDU. The traffic rate can be used to decide
|
|
* when AMPDU should be setup (according to a threshold)
|
|
* and is available for drivers to do things like cache
|
|
* eviction when only a limited number of BA streams are
|
|
* available and more streams are requested than available.
|
|
*/
|
|
|
|
static __inline void
|
|
ieee80211_txampdu_init_pps(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
/*
|
|
* Reset packet estimate.
|
|
*/
|
|
tap->txa_lastsample = ticks;
|
|
tap->txa_avgpps = 0;
|
|
}
|
|
|
|
static __inline void
|
|
ieee80211_txampdu_update_pps(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
|
|
/* NB: scale factor of 2 was picked heuristically */
|
|
tap->txa_avgpps = ((tap->txa_avgpps << 2) -
|
|
tap->txa_avgpps + tap->txa_pkts) >> 2;
|
|
}
|
|
|
|
/*
|
|
* Count a packet towards the pps estimate.
|
|
*/
|
|
static __inline void
|
|
ieee80211_txampdu_count_packet(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
|
|
/* XXX bound loop/do more crude estimate? */
|
|
while (ticks - tap->txa_lastsample >= hz) {
|
|
ieee80211_txampdu_update_pps(tap);
|
|
/* reset to start new sample interval */
|
|
tap->txa_pkts = 0;
|
|
if (tap->txa_avgpps == 0) {
|
|
tap->txa_lastsample = ticks;
|
|
break;
|
|
}
|
|
tap->txa_lastsample += hz;
|
|
}
|
|
tap->txa_pkts++;
|
|
}
|
|
|
|
/*
|
|
* Get the current pps estimate. If the average is out of
|
|
* date due to lack of traffic then we decay the estimate
|
|
* to account for the idle time.
|
|
*/
|
|
static __inline int
|
|
ieee80211_txampdu_getpps(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
/* XXX bound loop/do more crude estimate? */
|
|
while (ticks - tap->txa_lastsample >= hz) {
|
|
ieee80211_txampdu_update_pps(tap);
|
|
tap->txa_pkts = 0;
|
|
if (tap->txa_avgpps == 0) {
|
|
tap->txa_lastsample = ticks;
|
|
break;
|
|
}
|
|
tap->txa_lastsample += hz;
|
|
}
|
|
return tap->txa_avgpps;
|
|
}
|
|
|
|
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 *rxa_private;
|
|
uint64_t rxa_pad[3];
|
|
};
|
|
|
|
void ieee80211_ht_attach(struct ieee80211com *);
|
|
void ieee80211_ht_detach(struct ieee80211com *);
|
|
void ieee80211_ht_vattach(struct ieee80211vap *);
|
|
void ieee80211_ht_vdetach(struct ieee80211vap *);
|
|
|
|
void ieee80211_ht_announce(struct ieee80211com *);
|
|
|
|
struct ieee80211_mcs_rates {
|
|
uint16_t ht20_rate_800ns;
|
|
uint16_t ht20_rate_400ns;
|
|
uint16_t ht40_rate_800ns;
|
|
uint16_t ht40_rate_400ns;
|
|
};
|
|
extern const struct ieee80211_mcs_rates ieee80211_htrates[];
|
|
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 *);
|
|
void ieee80211_ht_node_cleanup(struct ieee80211_node *);
|
|
void ieee80211_ht_node_age(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_htprot_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 *);
|
|
int ieee80211_ht_updateparams(struct ieee80211_node *, const uint8_t *,
|
|
const uint8_t *);
|
|
void ieee80211_ht_updatehtcap(struct ieee80211_node *, 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);
|
|
int ieee80211_send_bar(struct ieee80211_node *, struct ieee80211_tx_ampdu *,
|
|
ieee80211_seq);
|
|
uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *);
|
|
uint8_t *ieee80211_add_htcap_ch(uint8_t *, struct ieee80211vap *,
|
|
struct ieee80211_channel *);
|
|
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 ieee80211vap *,
|
|
struct ieee80211_beacon_offsets *);
|
|
int ieee80211_ampdu_rx_start_ext(struct ieee80211_node *ni, int tid,
|
|
int seq, int baw);
|
|
int ieee80211_ampdu_tx_request_ext(struct ieee80211_node *ni, int tid);
|
|
int ieee80211_ampdu_tx_request_active_ext(struct ieee80211_node *ni,
|
|
int tid, int status);
|
|
|
|
#endif /* _NET80211_IEEE80211_HT_H_ */
|