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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | /* p80211conv.h * * Ether/802.11 conversions and packet buffer routines * * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. * -------------------------------------------------------------------- * * linux-wlan * * The contents of this file are subject to the Mozilla Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * Alternatively, the contents of this file may be used under the * terms of the GNU Public License version 2 (the "GPL"), in which * case the provisions of the GPL are applicable instead of the * above. If you wish to allow the use of your version of this file * only under the terms of the GPL and not to allow others to use * your version of this file under the MPL, indicate your decision * by deleting the provisions above and replace them with the notice * and other provisions required by the GPL. If you do not delete * the provisions above, a recipient may use your version of this * file under either the MPL or the GPL. * * -------------------------------------------------------------------- * * Inquiries regarding the linux-wlan Open Source project can be * made directly to: * * AbsoluteValue Systems Inc. * info@linux-wlan.com * http://www.linux-wlan.com * * -------------------------------------------------------------------- * * Portions of the development of this software were funded by * Intersil Corporation as part of PRISM(R) chipset product development. * * -------------------------------------------------------------------- * * This file declares the functions, types and macros that perform * Ethernet to/from 802.11 frame conversions. * * -------------------------------------------------------------------- */ #ifndef _LINUX_P80211CONV_H #define _LINUX_P80211CONV_H /*================================================================*/ /* Constants */ #define WLAN_ETHADDR_LEN 6 #define WLAN_IEEE_OUI_LEN 3 #define WLAN_ETHCONV_ENCAP 1 #define WLAN_ETHCONV_RFC1042 2 #define WLAN_ETHCONV_8021h 3 #define WLAN_MIN_ETHFRM_LEN 60 #define WLAN_MAX_ETHFRM_LEN 1514 #define WLAN_ETHHDR_LEN 14 #define P80211CAPTURE_VERSION 0x80211001 /*================================================================*/ /* Macros */ #define P80211_FRMMETA_MAGIC 0x802110 #define P80211SKB_FRMMETA(s) \ (((((p80211_frmmeta_t*)((s)->cb))->magic)==P80211_FRMMETA_MAGIC) ? \ ((p80211_frmmeta_t*)((s)->cb)) : \ (NULL)) #define P80211SKB_RXMETA(s) \ (P80211SKB_FRMMETA((s)) ? P80211SKB_FRMMETA((s))->rx : ((p80211_rxmeta_t*)(NULL))) typedef struct p80211_rxmeta { struct wlandevice *wlandev; UINT64 mactime; /* Hi-rez MAC-supplied time value */ UINT64 hosttime; /* Best-rez host supplied time value */ UINT rxrate; /* Receive data rate in 100kbps */ UINT priority; /* 0-15, 0=contention, 6=CF */ INT signal; /* An SSI, see p80211netdev.h */ INT noise; /* An SSI, see p80211netdev.h */ UINT channel; /* Receive channel (mostly for snifs) */ UINT preamble; /* P80211ENUM_preambletype_* */ UINT encoding; /* P80211ENUM_encoding_* */ } p80211_rxmeta_t; typedef struct p80211_frmmeta { UINT magic; p80211_rxmeta_t *rx; } p80211_frmmeta_t; void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb); int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb); void p80211skb_rxmeta_detach(struct sk_buff *skb); /*================================================================*/ /* Types */ /* * Frame capture header. (See doc/capturefrm.txt) */ typedef struct p80211_caphdr { UINT32 version; UINT32 length; UINT64 mactime; UINT64 hosttime; UINT32 phytype; UINT32 channel; UINT32 datarate; UINT32 antenna; UINT32 priority; UINT32 ssi_type; INT32 ssi_signal; INT32 ssi_noise; UINT32 preamble; UINT32 encoding; } p80211_caphdr_t; /* buffer free method pointer type */ typedef void (* freebuf_method_t)(void *buf, int size); typedef struct p80211_metawep { void *data; UINT8 iv[4]; UINT8 icv[4]; } p80211_metawep_t; /* local ether header type */ typedef struct wlan_ethhdr { UINT8 daddr[WLAN_ETHADDR_LEN]; UINT8 saddr[WLAN_ETHADDR_LEN]; UINT16 type; } __WLAN_ATTRIB_PACK__ wlan_ethhdr_t; /* local llc header type */ typedef struct wlan_llc { UINT8 dsap; UINT8 ssap; UINT8 ctl; } __WLAN_ATTRIB_PACK__ wlan_llc_t; /* local snap header type */ typedef struct wlan_snap { UINT8 oui[WLAN_IEEE_OUI_LEN]; UINT16 type; } __WLAN_ATTRIB_PACK__ wlan_snap_t; /* Circular include trick */ struct wlandevice; /*================================================================*/ /* Externs */ /*================================================================*/ /*Function Declarations */ int skb_p80211_to_ether( struct wlandevice *wlandev, UINT32 ethconv, struct sk_buff *skb); int skb_ether_to_p80211( struct wlandevice *wlandev, UINT32 ethconv, struct sk_buff *skb, p80211_hdr_t *p80211_hdr, p80211_metawep_t *p80211_wep ); int p80211_stt_findproto(UINT16 proto); int p80211_stt_addproto(UINT16 proto); #endif |