1/*-
2 * Copyright (c) 2009 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27#ifndef _NET80211_IEEE80211_SUPERG_H_
28#define _NET80211_IEEE80211_SUPERG_H_
29
30/*
31 * Atheros' 802.11 SuperG protocol support.
32 */
33
34/*
35 * Atheros advanced capability information element.
36 */
37struct ieee80211_ath_ie {
38	uint8_t		ath_id;			/* IEEE80211_ELEMID_VENDOR */
39	uint8_t		ath_len;		/* length in bytes */
40	uint8_t		ath_oui[3];		/* ATH_OUI */
41	uint8_t		ath_oui_type;		/* ATH_OUI_TYPE */
42	uint8_t		ath_oui_subtype;	/* ATH_OUI_SUBTYPE */
43	uint8_t		ath_version;		/* spec revision */
44	uint8_t		ath_capability;		/* capability info */
45#define	ATHEROS_CAP_TURBO_PRIME		0x01	/* dynamic turbo--aka Turbo' */
46#define	ATHEROS_CAP_COMPRESSION		0x02	/* data compression */
47#define	ATHEROS_CAP_FAST_FRAME		0x04	/* fast (jumbo) frames */
48#define	ATHEROS_CAP_XR			0x08	/* Xtended Range support */
49#define	ATHEROS_CAP_AR			0x10	/* Advanded Radar support */
50#define	ATHEROS_CAP_BURST		0x20	/* Bursting - not negotiated */
51#define	ATHEROS_CAP_WME			0x40	/* CWMin tuning */
52#define	ATHEROS_CAP_BOOST		0x80	/* use turbo/!turbo mode */
53	uint8_t		ath_defkeyix[2];
54} __packed;
55
56#define	ATH_OUI_VERSION		0x00
57#define	ATH_OUI_SUBTYPE		0x01
58
59#ifdef _KERNEL
60struct ieee80211_stageq {
61	struct mbuf		*head;		/* frames linked w/ m_nextpkt */
62	struct mbuf		*tail;		/* last frame in queue */
63	int			depth;		/* # items on head */
64};
65
66struct ieee80211_superg {
67	/* fast-frames staging q */
68	struct ieee80211_stageq	ff_stageq[WME_NUM_AC];
69};
70
71void	ieee80211_superg_attach(struct ieee80211com *);
72void	ieee80211_superg_detach(struct ieee80211com *);
73void	ieee80211_superg_vattach(struct ieee80211vap *);
74void	ieee80211_superg_vdetach(struct ieee80211vap *);
75
76uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
77uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
78void	ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
79int	ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
80	    const struct ieee80211_frame *);
81
82void	ieee80211_ff_node_init(struct ieee80211_node *);
83void	ieee80211_ff_node_cleanup(struct ieee80211_node *);
84
85static inline int
86ieee80211_amsdu_tx_ok(struct ieee80211_node *ni)
87{
88
89	/* First: software A-MSDU transmit? */
90	if ((ni->ni_ic->ic_caps & IEEE80211_C_SWAMSDUTX) == 0)
91		return (0);
92
93	/* Next: does the VAP have AMSDU TX enabled? */
94	if ((ni->ni_vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX) == 0)
95		return (0);
96
97	/* Next: 11n node? (assumed that A-MSDU TX to HT nodes is ok */
98	if ((ni->ni_flags & IEEE80211_NODE_HT) == 0)
99		return (0);
100
101	/* ok, we can at least /do/ AMSDU to this node */
102	return (1);
103}
104
105struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m);
106struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
107void	ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
108	     int quanta);
109
110static __inline void
111ieee80211_ff_age_all(struct ieee80211com *ic, int quanta)
112{
113	struct ieee80211_superg *sg = ic->ic_superg;
114
115	if (sg != NULL) {
116		ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VO], quanta);
117		ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VI], quanta);
118		ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BE], quanta);
119		ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BK], quanta);
120	}
121}
122
123static __inline void
124ieee80211_ff_flush(struct ieee80211com *ic, int ac)
125{
126	struct ieee80211_superg *sg = ic->ic_superg;
127
128	if (sg != NULL)
129		ieee80211_ff_age(ic, &sg->ff_stageq[ac], 0x7fffffff);
130}
131
132static __inline void
133ieee80211_ff_flush_all(struct ieee80211com *ic)
134{
135	ieee80211_ff_age_all(ic, 0x7fffffff);
136}
137
138struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
139	    int, struct ieee80211_key *);
140struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1,
141	    int hdrspace, struct ieee80211_key *key);
142
143struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
144
145static __inline struct mbuf *
146ieee80211_decap_fastframe(struct ieee80211vap *vap, struct ieee80211_node *ni,
147    struct mbuf *m)
148{
149	return IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
150	    ieee80211_ff_decap(ni, m) : m;
151}
152#endif /* _KERNEL */
153#endif /* _NET80211_IEEE80211_SUPERG_H_ */
154