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1/* SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1) */
2/*
3 *
4 * Ether/802.11 conversions and packet buffer routines
5 *
6 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
7 * --------------------------------------------------------------------
8 *
9 * linux-wlan
10 *
11 * --------------------------------------------------------------------
12 *
13 * Inquiries regarding the linux-wlan Open Source project can be
14 * made directly to:
15 *
16 * AbsoluteValue Systems Inc.
17 * info@linux-wlan.com
18 * http://www.linux-wlan.com
19 *
20 * --------------------------------------------------------------------
21 *
22 * Portions of the development of this software were funded by
23 * Intersil Corporation as part of PRISM(R) chipset product development.
24 *
25 * --------------------------------------------------------------------
26 *
27 * This file declares the functions, types and macros that perform
28 * Ethernet to/from 802.11 frame conversions.
29 *
30 * --------------------------------------------------------------------
31 */
32
33#ifndef _LINUX_P80211CONV_H
34#define _LINUX_P80211CONV_H
35
36#define WLAN_IEEE_OUI_LEN 3
37
38#define WLAN_ETHCONV_ENCAP 1
39#define WLAN_ETHCONV_8021h 3
40
41#define P80211CAPTURE_VERSION 0x80211001
42
43#define P80211_FRMMETA_MAGIC 0x802110
44
45struct p80211_rxmeta {
46 struct wlandevice *wlandev;
47
48 u64 mactime; /* Hi-rez MAC-supplied time value */
49 u64 hosttime; /* Best-rez host supplied time value */
50
51 unsigned int rxrate; /* Receive data rate in 100kbps */
52 unsigned int priority; /* 0-15, 0=contention, 6=CF */
53 int signal; /* An SSI, see p80211netdev.h */
54 int noise; /* An SSI, see p80211netdev.h */
55 unsigned int channel; /* Receive channel (mostly for snifs) */
56 unsigned int preamble; /* P80211ENUM_preambletype_* */
57 unsigned int encoding; /* P80211ENUM_encoding_* */
58
59};
60
61struct p80211_frmmeta {
62 unsigned int magic;
63 struct p80211_rxmeta *rx;
64};
65
66void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
67int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
68void p80211skb_rxmeta_detach(struct sk_buff *skb);
69
70static inline struct p80211_frmmeta *p80211skb_frmmeta(struct sk_buff *skb)
71{
72 struct p80211_frmmeta *frmmeta = (struct p80211_frmmeta *)skb->cb;
73
74 return frmmeta->magic == P80211_FRMMETA_MAGIC ? frmmeta : NULL;
75}
76
77static inline struct p80211_rxmeta *p80211skb_rxmeta(struct sk_buff *skb)
78{
79 struct p80211_frmmeta *frmmeta = p80211skb_frmmeta(skb);
80
81 return frmmeta ? frmmeta->rx : NULL;
82}
83
84/*
85 * Frame capture header. (See doc/capturefrm.txt)
86 */
87struct p80211_caphdr {
88 __be32 version;
89 __be32 length;
90 __be64 mactime;
91 __be64 hosttime;
92 __be32 phytype;
93 __be32 channel;
94 __be32 datarate;
95 __be32 antenna;
96 __be32 priority;
97 __be32 ssi_type;
98 __be32 ssi_signal;
99 __be32 ssi_noise;
100 __be32 preamble;
101 __be32 encoding;
102};
103
104struct p80211_metawep {
105 void *data;
106 u8 iv[4];
107 u8 icv[4];
108};
109
110/* local ether header type */
111struct wlan_ethhdr {
112 u8 daddr[ETH_ALEN];
113 u8 saddr[ETH_ALEN];
114 __be16 type;
115} __packed;
116
117/* local llc header type */
118struct wlan_llc {
119 u8 dsap;
120 u8 ssap;
121 u8 ctl;
122} __packed;
123
124/* local snap header type */
125struct wlan_snap {
126 u8 oui[WLAN_IEEE_OUI_LEN];
127 __be16 type;
128} __packed;
129
130/* Circular include trick */
131struct wlandevice;
132
133int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
134 struct sk_buff *skb);
135int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
136 struct sk_buff *skb, struct p80211_hdr *p80211_hdr,
137 struct p80211_metawep *p80211_wep);
138
139int p80211_stt_findproto(u16 proto);
140
141#endif
1/* p80211conv.h
2*
3* Ether/802.11 conversions and packet buffer routines
4*
5* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
6* --------------------------------------------------------------------
7*
8* linux-wlan
9*
10* The contents of this file are subject to the Mozilla Public
11* License Version 1.1 (the "License"); you may not use this file
12* except in compliance with the License. You may obtain a copy of
13* the License at http://www.mozilla.org/MPL/
14*
15* Software distributed under the License is distributed on an "AS
16* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
17* implied. See the License for the specific language governing
18* rights and limitations under the License.
19*
20* Alternatively, the contents of this file may be used under the
21* terms of the GNU Public License version 2 (the "GPL"), in which
22* case the provisions of the GPL are applicable instead of the
23* above. If you wish to allow the use of your version of this file
24* only under the terms of the GPL and not to allow others to use
25* your version of this file under the MPL, indicate your decision
26* by deleting the provisions above and replace them with the notice
27* and other provisions required by the GPL. If you do not delete
28* the provisions above, a recipient may use your version of this
29* file under either the MPL or the GPL.
30*
31* --------------------------------------------------------------------
32*
33* Inquiries regarding the linux-wlan Open Source project can be
34* made directly to:
35*
36* AbsoluteValue Systems Inc.
37* info@linux-wlan.com
38* http://www.linux-wlan.com
39*
40* --------------------------------------------------------------------
41*
42* Portions of the development of this software were funded by
43* Intersil Corporation as part of PRISM(R) chipset product development.
44*
45* --------------------------------------------------------------------
46*
47* This file declares the functions, types and macros that perform
48* Ethernet to/from 802.11 frame conversions.
49*
50* --------------------------------------------------------------------
51*/
52
53#ifndef _LINUX_P80211CONV_H
54#define _LINUX_P80211CONV_H
55
56#define WLAN_ETHADDR_LEN 6
57#define WLAN_IEEE_OUI_LEN 3
58
59#define WLAN_ETHCONV_ENCAP 1
60#define WLAN_ETHCONV_8021h 3
61
62#define WLAN_ETHHDR_LEN 14
63
64#define P80211CAPTURE_VERSION 0x80211001
65
66#define P80211_FRMMETA_MAGIC 0x802110
67
68#define P80211SKB_FRMMETA(s) \
69 (((((struct p80211_frmmeta *)((s)->cb))->magic) == \
70 P80211_FRMMETA_MAGIC) ? \
71 ((struct p80211_frmmeta *)((s)->cb)) : \
72 (NULL))
73
74#define P80211SKB_RXMETA(s) \
75 (P80211SKB_FRMMETA((s)) ? P80211SKB_FRMMETA((s))->rx : \
76 ((struct p80211_rxmeta *)(NULL)))
77
78struct p80211_rxmeta {
79 struct wlandevice *wlandev;
80
81 u64 mactime; /* Hi-rez MAC-supplied time value */
82 u64 hosttime; /* Best-rez host supplied time value */
83
84 unsigned int rxrate; /* Receive data rate in 100kbps */
85 unsigned int priority; /* 0-15, 0=contention, 6=CF */
86 int signal; /* An SSI, see p80211netdev.h */
87 int noise; /* An SSI, see p80211netdev.h */
88 unsigned int channel; /* Receive channel (mostly for snifs) */
89 unsigned int preamble; /* P80211ENUM_preambletype_* */
90 unsigned int encoding; /* P80211ENUM_encoding_* */
91
92};
93
94struct p80211_frmmeta {
95 unsigned int magic;
96 struct p80211_rxmeta *rx;
97};
98
99void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
100int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
101void p80211skb_rxmeta_detach(struct sk_buff *skb);
102
103/*
104 * Frame capture header. (See doc/capturefrm.txt)
105 */
106struct p80211_caphdr {
107 u32 version;
108 u32 length;
109 u64 mactime;
110 u64 hosttime;
111 u32 phytype;
112 u32 channel;
113 u32 datarate;
114 u32 antenna;
115 u32 priority;
116 u32 ssi_type;
117 s32 ssi_signal;
118 s32 ssi_noise;
119 u32 preamble;
120 u32 encoding;
121};
122
123/* buffer free method pointer type */
124typedef void (*freebuf_method_t) (void *buf, int size);
125
126struct p80211_metawep {
127 void *data;
128 u8 iv[4];
129 u8 icv[4];
130};
131
132/* local ether header type */
133struct wlan_ethhdr {
134 u8 daddr[WLAN_ETHADDR_LEN];
135 u8 saddr[WLAN_ETHADDR_LEN];
136 u16 type;
137} __packed;
138
139/* local llc header type */
140struct wlan_llc {
141 u8 dsap;
142 u8 ssap;
143 u8 ctl;
144} __packed;
145
146/* local snap header type */
147struct wlan_snap {
148 u8 oui[WLAN_IEEE_OUI_LEN];
149 u16 type;
150} __packed;
151
152/* Circular include trick */
153struct wlandevice;
154
155int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
156 struct sk_buff *skb);
157int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
158 struct sk_buff *skb, union p80211_hdr *p80211_hdr,
159 struct p80211_metawep *p80211_wep);
160
161int p80211_stt_findproto(u16 proto);
162
163#endif