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freebsd-nq/sys/net80211/ieee80211_superg.h

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split Atheros SuperG support out into it's own file that's included only with a new IEEE80211_SUPPORT_SUPERG option
2009-03-24 20:39:08 +00:00
/*-
* 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.
*/
o move tdma+superg protocol defs out of public view o add #ifdef _KERNEL to superg+tdma include files so they can be used by user code to get the protocol defs
2009-03-26 21:29:03 +00:00
/*
* 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
make superg/fast-frames state dynamically-allocated (and indirect off the com structure instead of embedded); this reduces the overhead when not configured and reduces visibility of the contents
2009-05-02 20:16:55 +00:00
struct ieee80211_stageq {
struct mbuf *head; /* frames linked w/ m_nextpkt */
struct mbuf *tail; /* last frame in queue */
int depth; /* # items on head */
};
struct ieee80211_superg {
/* fast-frames staging q */
struct ieee80211_stageq ff_stageq[WME_NUM_AC];
};
split Atheros SuperG support out into it's own file that's included only with a new IEEE80211_SUPPORT_SUPERG option
2009-03-24 20:39:08 +00:00
void ieee80211_superg_attach(struct ieee80211com *);
void ieee80211_superg_detach(struct ieee80211com *);
void ieee80211_superg_vattach(struct ieee80211vap *);
void ieee80211_superg_vdetach(struct ieee80211vap *);
Fix enough bits so that fast frames work again: o include ath ie in beacon frames o fix probe response check for including ath ie o add ieee80211_add_athcap shorthand for ap-side ie additions
2009-03-26 19:13:11 +00:00
uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
split Atheros SuperG support out into it's own file that's included only with a new IEEE80211_SUPPORT_SUPERG option
2009-03-24 20:39:08 +00:00
void ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
int ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
const struct ieee80211_frame *);
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
void ieee80211_ff_node_init(struct ieee80211_node *);
void ieee80211_ff_node_cleanup(struct ieee80211_node *);
[net80211] Initial A-MSDU support for testing / evaluation A-MSDU is another 11n aggregation mechanism where multiple ethernet frames get LLC encapsulated (so they have a length field), padded, and put in a single MPDU (802.11 MAC frame.) This means it gets sent out as a single frame, with a single seqno, it's acked as one frame, etc. It turns out that, hah, atheros fast frames is almost but not quite like this, so I'm reusing all of the current superg/fast-frames stuff in order to actually transmit A-MSDU. Yes, this means that A-MSDU frames are also only aggregated two at a time, so it's not necessarily a huge win, but it's better than nothing. This doesn't do anything by default - the driver needs to say it does A-MSDU as well as set the AMSDU software TX capability so this code path gets exercised. For now, the only driver that enables this is urtwn. I'll enable it for rsu at some point soon. Tested: * Add an amsdu encap path to aggregate two frames, same as the fast-frames path. * Always do the superg init/teardown and node init/teardown stuff, regardless of whether the nodes are doing fast-frames (the ATH capability stuff.) That way we can reuse it for amsdu. * Don't do AMSDU for multicast/broadcast and EAPOL frames. * If we're doing A-MPDU, then don't bother doing FF/A-MSDU. We can likely do both together, but I don't want to change behaviour. * Teach the fast frames approx txtime logic to support the 11n rates. But, since we don't currently have a full "current rate" support, assume it's HT20, long-gi, etc. That way we overshoot on the TX time estimation, so we're always inside the requirements. (And we only aggregate two frames for now, so we're not really going to exceed that.) * Drop the maximum FF age default down to 2ms, otherwise we end up with some very annoyingly large latencies. TODO: * We only aggregate two ethernet frames, so I'm not checking the max A-MSDU size. But when it comes time to support >2 frames, we should obey that. Tested: * urtwn(4)
2016-04-06 01:21:51 +00:00
static inline int
ieee80211_amsdu_tx_ok(struct ieee80211_node *ni)
{
/* First: software A-MSDU transmit? */
if ((ni->ni_ic->ic_caps & IEEE80211_C_SWAMSDUTX) == 0)
return (0);
/* Next: does the VAP have AMSDU TX enabled? */
if ((ni->ni_vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX) == 0)
return (0);
/* Next: 11n node? (assumed that A-MSDU TX to HT nodes is ok */
if ((ni->ni_flags & IEEE80211_NODE_HT) == 0)
return (0);
/* ok, we can at least /do/ AMSDU to this node */
return (1);
}
struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m);
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
struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
make superg/fast-frames state dynamically-allocated (and indirect off the com structure instead of embedded); this reduces the overhead when not configured and reduces visibility of the contents
2009-05-02 20:16:55 +00:00
void ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
int quanta);
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
static __inline void
net80211: fix LOR/deadlock in ieee80211_ff_node_cleanup(). Add new lock for stageq (part of ieee80211_superg structure) and ni_tx_superg (part of ieee80211_node structure); drop com_lock protection where it is used to protect them. While here, drop duplicate OPACKETS counter incrementation. ni_tx_ampdu is not protected with it (however, it is also used without locking in other places; probably, it requires some other solution to be thread-safe). Tested with RTL8188CUS (AP) and RTL8188EU (STA). NOTE: Since this change breaks KBI, all wireless drivers need to be recompiled. Reviewed by: adrian Approved by: re (gjb) Differential Revision: https://reviews.freebsd.org/D6958
2016-06-29 17:25:46 +00:00
ieee80211_ff_age_all(struct ieee80211com *ic, int quanta)
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
{
make superg/fast-frames state dynamically-allocated (and indirect off the com structure instead of embedded); this reduces the overhead when not configured and reduces visibility of the contents
2009-05-02 20:16:55 +00:00
struct ieee80211_superg *sg = ic->ic_superg;
net80211: fix LOR/deadlock in ieee80211_ff_node_cleanup(). Add new lock for stageq (part of ieee80211_superg structure) and ni_tx_superg (part of ieee80211_node structure); drop com_lock protection where it is used to protect them. While here, drop duplicate OPACKETS counter incrementation. ni_tx_ampdu is not protected with it (however, it is also used without locking in other places; probably, it requires some other solution to be thread-safe). Tested with RTL8188CUS (AP) and RTL8188EU (STA). NOTE: Since this change breaks KBI, all wireless drivers need to be recompiled. Reviewed by: adrian Approved by: re (gjb) Differential Revision: https://reviews.freebsd.org/D6958
2016-06-29 17:25:46 +00:00
if (sg != NULL) {
ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VO], quanta);
ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VI], quanta);
ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BE], quanta);
ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BK], quanta);
}
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
}
static __inline void
net80211: fix LOR/deadlock in ieee80211_ff_node_cleanup(). Add new lock for stageq (part of ieee80211_superg structure) and ni_tx_superg (part of ieee80211_node structure); drop com_lock protection where it is used to protect them. While here, drop duplicate OPACKETS counter incrementation. ni_tx_ampdu is not protected with it (however, it is also used without locking in other places; probably, it requires some other solution to be thread-safe). Tested with RTL8188CUS (AP) and RTL8188EU (STA). NOTE: Since this change breaks KBI, all wireless drivers need to be recompiled. Reviewed by: adrian Approved by: re (gjb) Differential Revision: https://reviews.freebsd.org/D6958
2016-06-29 17:25:46 +00:00
ieee80211_ff_flush(struct ieee80211com *ic, int ac)
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
{
make superg/fast-frames state dynamically-allocated (and indirect off the com structure instead of embedded); this reduces the overhead when not configured and reduces visibility of the contents
2009-05-02 20:16:55 +00:00
struct ieee80211_superg *sg = ic->ic_superg;
net80211: fix LOR/deadlock in ieee80211_ff_node_cleanup(). Add new lock for stageq (part of ieee80211_superg structure) and ni_tx_superg (part of ieee80211_node structure); drop com_lock protection where it is used to protect them. While here, drop duplicate OPACKETS counter incrementation. ni_tx_ampdu is not protected with it (however, it is also used without locking in other places; probably, it requires some other solution to be thread-safe). Tested with RTL8188CUS (AP) and RTL8188EU (STA). NOTE: Since this change breaks KBI, all wireless drivers need to be recompiled. Reviewed by: adrian Approved by: re (gjb) Differential Revision: https://reviews.freebsd.org/D6958
2016-06-29 17:25:46 +00:00
if (sg != NULL)
ieee80211_ff_age(ic, &sg->ff_stageq[ac], 0x7fffffff);
}
static __inline void
ieee80211_ff_flush_all(struct ieee80211com *ic)
{
ieee80211_ff_age_all(ic, 0x7fffffff);
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
}
split Atheros SuperG support out into it's own file that's included only with a new IEEE80211_SUPPORT_SUPERG option
2009-03-24 20:39:08 +00:00
struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
int, struct ieee80211_key *);
[net80211] Initial A-MSDU support for testing / evaluation A-MSDU is another 11n aggregation mechanism where multiple ethernet frames get LLC encapsulated (so they have a length field), padded, and put in a single MPDU (802.11 MAC frame.) This means it gets sent out as a single frame, with a single seqno, it's acked as one frame, etc. It turns out that, hah, atheros fast frames is almost but not quite like this, so I'm reusing all of the current superg/fast-frames stuff in order to actually transmit A-MSDU. Yes, this means that A-MSDU frames are also only aggregated two at a time, so it's not necessarily a huge win, but it's better than nothing. This doesn't do anything by default - the driver needs to say it does A-MSDU as well as set the AMSDU software TX capability so this code path gets exercised. For now, the only driver that enables this is urtwn. I'll enable it for rsu at some point soon. Tested: * Add an amsdu encap path to aggregate two frames, same as the fast-frames path. * Always do the superg init/teardown and node init/teardown stuff, regardless of whether the nodes are doing fast-frames (the ATH capability stuff.) That way we can reuse it for amsdu. * Don't do AMSDU for multicast/broadcast and EAPOL frames. * If we're doing A-MPDU, then don't bother doing FF/A-MSDU. We can likely do both together, but I don't want to change behaviour. * Teach the fast frames approx txtime logic to support the 11n rates. But, since we don't currently have a full "current rate" support, assume it's HT20, long-gi, etc. That way we overshoot on the TX time estimation, so we're always inside the requirements. (And we only aggregate two frames for now, so we're not really going to exceed that.) * Drop the maximum FF age default down to 2ms, otherwise we end up with some very annoyingly large latencies. TODO: * We only aggregate two ethernet frames, so I'm not checking the max A-MSDU size. But when it comes time to support >2 frames, we should obey that. Tested: * urtwn(4)
2016-04-06 01:21:51 +00:00
struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1,
int hdrspace, struct ieee80211_key *key);
split Atheros SuperG support out into it's own file that's included only with a new IEEE80211_SUPPORT_SUPERG option
2009-03-24 20:39:08 +00:00
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;
}
o move tdma+superg protocol defs out of public view o add #ifdef _KERNEL to superg+tdma include files so they can be used by user code to get the protocol defs
2009-03-26 21:29:03 +00:00
#endif /* _KERNEL */
split Atheros SuperG support out into it's own file that's included only with a new IEEE80211_SUPPORT_SUPERG option
2009-03-24 20:39:08 +00:00
#endif /* _NET80211_IEEE80211_SUPERG_H_ */
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