freebsd-skq/sys/net80211/ieee80211_superg.h
sam ec9a1dd6fa Hoist 802.11 encapsulation up into net80211:
o call ieee80211_encap in ieee80211_start so frames passed down to drivers
  are already encapsulated
o remove ieee80211_encap calls in drivers
o fixup wi so it recreates the 802.3 head it requires from the 802.11
  header contents
o move fast-frame aggregation from ath to net80211 (conditional on
  IEEE80211_SUPPORT_SUPERG):
  - aggregation is now done in ieee80211_start; it is enabled when the
    packets/sec exceeds ieee80211_ffppsmin (net.wlan.ffppsmin) and frames
    are held on a staging queue according to ieee80211_ffagemax
    (net.wlan.ffagemax) to wait for a frame to combine with
  - drivers must call back to age/flush the staging queue (ath does this
    on tx done, at swba, and on rx according to the state of the tx queues
    and/or the contents of the staging queue)
  - remove fast-frame-related data structures from ath
  - add ieee80211_ff_node_init and ieee80211_ff_node_cleanup to handle
    per-node fast-frames state (we reuse 11n tx ampdu state)
o change ieee80211_encap calling convention to include an explicit vap
  so frames coming through a WDS vap are recognized w/o setting M_WDS

With these changes any device able to tx/rx 3Kbyte+ frames can use fast-frames.

Reviewed by:	thompsa, rpaulo, avatar, imp, sephe
2009-03-30 21:53:27 +00:00

105 lines
4.0 KiB
C

/*-
* Copyright (c) 2009 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_SUPERG_H_
#define _NET80211_IEEE80211_SUPERG_H_
/*
* Atheros' 802.11 SuperG protocol support.
*/
/*
* Atheros advanced capability information element.
*/
struct ieee80211_ath_ie {
uint8_t ath_id; /* IEEE80211_ELEMID_VENDOR */
uint8_t ath_len; /* length in bytes */
uint8_t ath_oui[3]; /* ATH_OUI */
uint8_t ath_oui_type; /* ATH_OUI_TYPE */
uint8_t ath_oui_subtype; /* ATH_OUI_SUBTYPE */
uint8_t ath_version; /* spec revision */
uint8_t ath_capability; /* capability info */
#define ATHEROS_CAP_TURBO_PRIME 0x01 /* dynamic turbo--aka Turbo' */
#define ATHEROS_CAP_COMPRESSION 0x02 /* data compression */
#define ATHEROS_CAP_FAST_FRAME 0x04 /* fast (jumbo) frames */
#define ATHEROS_CAP_XR 0x08 /* Xtended Range support */
#define ATHEROS_CAP_AR 0x10 /* Advanded Radar support */
#define ATHEROS_CAP_BURST 0x20 /* Bursting - not negotiated */
#define ATHEROS_CAP_WME 0x40 /* CWMin tuning */
#define ATHEROS_CAP_BOOST 0x80 /* use turbo/!turbo mode */
uint8_t ath_defkeyix[2];
} __packed;
#define ATH_OUI_VERSION 0x00
#define ATH_OUI_SUBTYPE 0x01
#ifdef _KERNEL
void ieee80211_superg_attach(struct ieee80211com *);
void ieee80211_superg_detach(struct ieee80211com *);
void ieee80211_superg_vattach(struct ieee80211vap *);
void ieee80211_superg_vdetach(struct ieee80211vap *);
uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
void ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
int ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
const struct ieee80211_frame *);
void ieee80211_ff_node_init(struct ieee80211_node *);
void ieee80211_ff_node_cleanup(struct ieee80211_node *);
struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
void ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *, int);
static __inline void
ieee80211_flush_stageq(struct ieee80211com *ic, int ac)
{
if (ic->ic_ff_stageq[ac].depth)
ieee80211_ff_age(ic, &ic->ic_ff_stageq[ac], 0x7fffffff);
}
static __inline void
ieee80211_age_stageq(struct ieee80211com *ic, int ac, int quanta)
{
if (ic->ic_ff_stageq[ac].depth)
ieee80211_ff_age(ic, &ic->ic_ff_stageq[ac], quanta);
}
struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
int, struct ieee80211_key *);
struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
static __inline struct mbuf *
ieee80211_decap_fastframe(struct ieee80211vap *vap, struct ieee80211_node *ni,
struct mbuf *m)
{
return IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
ieee80211_ff_decap(ni, m) : m;
}
#endif /* _KERNEL */
#endif /* _NET80211_IEEE80211_SUPERG_H_ */