/* SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1) */
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/* p80211conv.h
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*
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* Ether/802.11 conversions and packet buffer routines
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*
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* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
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* --------------------------------------------------------------------
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*
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* linux-wlan
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License version 2 (the "GPL"), in which
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* case the provisions of the GPL are applicable instead of the
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* above. If you wish to allow the use of your version of this file
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* only under the terms of the GPL and not to allow others to use
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* your version of this file under the MPL, indicate your decision
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* by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*
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* --------------------------------------------------------------------
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*
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* Inquiries regarding the linux-wlan Open Source project can be
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* made directly to:
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*
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* AbsoluteValue Systems Inc.
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* info@linux-wlan.com
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* http://www.linux-wlan.com
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*
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* --------------------------------------------------------------------
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*
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* Portions of the development of this software were funded by
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* Intersil Corporation as part of PRISM(R) chipset product development.
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*
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* --------------------------------------------------------------------
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*
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* This file declares the functions, types and macros that perform
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* Ethernet to/from 802.11 frame conversions.
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*
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* --------------------------------------------------------------------
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*/
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#ifndef _LINUX_P80211CONV_H
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#define _LINUX_P80211CONV_H
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#define WLAN_IEEE_OUI_LEN 3
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#define WLAN_ETHCONV_ENCAP 1
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#define WLAN_ETHCONV_8021h 3
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#define P80211CAPTURE_VERSION 0x80211001
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#define P80211_FRMMETA_MAGIC 0x802110
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struct p80211_rxmeta {
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struct wlandevice *wlandev;
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u64 mactime; /* Hi-rez MAC-supplied time value */
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u64 hosttime; /* Best-rez host supplied time value */
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unsigned int rxrate; /* Receive data rate in 100kbps */
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unsigned int priority; /* 0-15, 0=contention, 6=CF */
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int signal; /* An SSI, see p80211netdev.h */
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int noise; /* An SSI, see p80211netdev.h */
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unsigned int channel; /* Receive channel (mostly for snifs) */
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unsigned int preamble; /* P80211ENUM_preambletype_* */
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unsigned int encoding; /* P80211ENUM_encoding_* */
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};
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struct p80211_frmmeta {
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unsigned int magic;
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struct p80211_rxmeta *rx;
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};
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void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
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int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
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void p80211skb_rxmeta_detach(struct sk_buff *skb);
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static inline struct p80211_frmmeta *p80211skb_frmmeta(struct sk_buff *skb)
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{
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struct p80211_frmmeta *frmmeta = (struct p80211_frmmeta *)skb->cb;
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return frmmeta->magic == P80211_FRMMETA_MAGIC ? frmmeta : NULL;
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}
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static inline struct p80211_rxmeta *p80211skb_rxmeta(struct sk_buff *skb)
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{
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struct p80211_frmmeta *frmmeta = p80211skb_frmmeta(skb);
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return frmmeta ? frmmeta->rx : NULL;
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}
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/*
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* Frame capture header. (See doc/capturefrm.txt)
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*/
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struct p80211_caphdr {
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__be32 version;
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__be32 length;
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__be64 mactime;
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__be64 hosttime;
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__be32 phytype;
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__be32 channel;
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__be32 datarate;
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__be32 antenna;
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__be32 priority;
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__be32 ssi_type;
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__be32 ssi_signal;
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__be32 ssi_noise;
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__be32 preamble;
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__be32 encoding;
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};
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/* buffer free method pointer type */
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typedef void (*freebuf_method_t) (void *buf, int size);
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struct p80211_metawep {
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void *data;
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u8 iv[4];
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u8 icv[4];
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};
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/* local ether header type */
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struct wlan_ethhdr {
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u8 daddr[ETH_ALEN];
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u8 saddr[ETH_ALEN];
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__be16 type;
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} __packed;
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/* local llc header type */
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struct wlan_llc {
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u8 dsap;
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u8 ssap;
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u8 ctl;
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} __packed;
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/* local snap header type */
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struct wlan_snap {
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u8 oui[WLAN_IEEE_OUI_LEN];
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__be16 type;
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} __packed;
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/* Circular include trick */
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struct wlandevice;
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int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
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struct sk_buff *skb);
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int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
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struct sk_buff *skb, union p80211_hdr *p80211_hdr,
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struct p80211_metawep *p80211_wep);
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int p80211_stt_findproto(u16 proto);
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#endif
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