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) == P80211_FRMMETA_MAGIC) ? \ 70 ((struct p80211_frmmeta *)((s)->cb)) : \ 71 (NULL)) 72 73#define P80211SKB_RXMETA(s) \ 74 (P80211SKB_FRMMETA((s)) ? P80211SKB_FRMMETA((s))->rx : ((struct p80211_rxmeta *)(NULL))) 75 76struct p80211_rxmeta { 77 struct wlandevice *wlandev; 78 79 u64 mactime; /* Hi-rez MAC-supplied time value */ 80 u64 hosttime; /* Best-rez host supplied time value */ 81 82 unsigned int rxrate; /* Receive data rate in 100kbps */ 83 unsigned int priority; /* 0-15, 0=contention, 6=CF */ 84 int signal; /* An SSI, see p80211netdev.h */ 85 int noise; /* An SSI, see p80211netdev.h */ 86 unsigned int channel; /* Receive channel (mostly for snifs) */ 87 unsigned int preamble; /* P80211ENUM_preambletype_* */ 88 unsigned int encoding; /* P80211ENUM_encoding_* */ 89 90}; 91 92struct p80211_frmmeta { 93 unsigned int magic; 94 struct p80211_rxmeta *rx; 95}; 96 97void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb); 98int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb); 99void p80211skb_rxmeta_detach(struct sk_buff *skb); 100 101/* 102 * Frame capture header. (See doc/capturefrm.txt) 103 */ 104struct p80211_caphdr { 105 u32 version; 106 u32 length; 107 u64 mactime; 108 u64 hosttime; 109 u32 phytype; 110 u32 channel; 111 u32 datarate; 112 u32 antenna; 113 u32 priority; 114 u32 ssi_type; 115 s32 ssi_signal; 116 s32 ssi_noise; 117 u32 preamble; 118 u32 encoding; 119}; 120 121/* buffer free method pointer type */ 122typedef void (*freebuf_method_t) (void *buf, int size); 123 124struct p80211_metawep { 125 void *data; 126 u8 iv[4]; 127 u8 icv[4]; 128}; 129 130/* local ether header type */ 131struct wlan_ethhdr { 132 u8 daddr[WLAN_ETHADDR_LEN]; 133 u8 saddr[WLAN_ETHADDR_LEN]; 134 u16 type; 135} __attribute__ ((packed)); 136 137/* local llc header type */ 138struct wlan_llc { 139 u8 dsap; 140 u8 ssap; 141 u8 ctl; 142} __attribute__ ((packed)); 143 144/* local snap header type */ 145struct wlan_snap { 146 u8 oui[WLAN_IEEE_OUI_LEN]; 147 u16 type; 148} __attribute__ ((packed)); 149 150/* Circular include trick */ 151struct wlandevice; 152 153int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv, 154 struct sk_buff *skb); 155int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv, 156 struct sk_buff *skb, union p80211_hdr *p80211_hdr, 157 struct p80211_metawep *p80211_wep); 158 159int p80211_stt_findproto(u16 proto); 160 161#endif 162