xref: /freebsd/sys/net80211/ieee80211_superg.h (revision 63d1fd5970ec814904aa0f4580b10a0d302d08b2)
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  */
37 struct 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
60 struct 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 
66 struct ieee80211_superg {
67 	/* fast-frames staging q */
68 	struct ieee80211_stageq	ff_stageq[WME_NUM_AC];
69 };
70 
71 void	ieee80211_superg_attach(struct ieee80211com *);
72 void	ieee80211_superg_detach(struct ieee80211com *);
73 void	ieee80211_superg_vattach(struct ieee80211vap *);
74 void	ieee80211_superg_vdetach(struct ieee80211vap *);
75 
76 uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
77 uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
78 void	ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
79 int	ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
80 	    const struct ieee80211_frame *);
81 
82 void	ieee80211_ff_node_init(struct ieee80211_node *);
83 void	ieee80211_ff_node_cleanup(struct ieee80211_node *);
84 
85 static inline int
86 ieee80211_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 
105 struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m);
106 struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
107 void	ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
108 	     int quanta);
109 
110 static __inline void
111 ieee80211_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 
123 static __inline void
124 ieee80211_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 
132 static __inline void
133 ieee80211_ff_flush_all(struct ieee80211com *ic)
134 {
135 	ieee80211_ff_age_all(ic, 0x7fffffff);
136 }
137 
138 struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
139 	    int, struct ieee80211_key *);
140 struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1,
141 	    int hdrspace, struct ieee80211_key *key);
142 
143 struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
144 
145 static __inline struct mbuf *
146 ieee80211_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