| /* SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1) */ |
| /* |
| * |
| * Ether/802.11 conversions and packet buffer routines |
| * |
| * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. |
| * -------------------------------------------------------------------- |
| * |
| * linux-wlan |
| * |
| * -------------------------------------------------------------------- |
| * |
| * 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 |
| |
| #define WLAN_IEEE_OUI_LEN 3 |
| |
| #define WLAN_ETHCONV_ENCAP 1 |
| #define WLAN_ETHCONV_8021h 3 |
| |
| #define P80211CAPTURE_VERSION 0x80211001 |
| |
| #define P80211_FRMMETA_MAGIC 0x802110 |
| |
| struct p80211_rxmeta { |
| struct wlandevice *wlandev; |
| |
| u64 mactime; /* Hi-rez MAC-supplied time value */ |
| u64 hosttime; /* Best-rez host supplied time value */ |
| |
| unsigned int rxrate; /* Receive data rate in 100kbps */ |
| unsigned int priority; /* 0-15, 0=contention, 6=CF */ |
| int signal; /* An SSI, see p80211netdev.h */ |
| int noise; /* An SSI, see p80211netdev.h */ |
| unsigned int channel; /* Receive channel (mostly for snifs) */ |
| unsigned int preamble; /* P80211ENUM_preambletype_* */ |
| unsigned int encoding; /* P80211ENUM_encoding_* */ |
| |
| }; |
| |
| struct p80211_frmmeta { |
| unsigned int magic; |
| struct p80211_rxmeta *rx; |
| }; |
| |
| 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); |
| |
| static inline struct p80211_frmmeta *p80211skb_frmmeta(struct sk_buff *skb) |
| { |
| struct p80211_frmmeta *frmmeta = (struct p80211_frmmeta *)skb->cb; |
| |
| return frmmeta->magic == P80211_FRMMETA_MAGIC ? frmmeta : NULL; |
| } |
| |
| static inline struct p80211_rxmeta *p80211skb_rxmeta(struct sk_buff *skb) |
| { |
| struct p80211_frmmeta *frmmeta = p80211skb_frmmeta(skb); |
| |
| return frmmeta ? frmmeta->rx : NULL; |
| } |
| |
| /* |
| * Frame capture header. (See doc/capturefrm.txt) |
| */ |
| struct p80211_caphdr { |
| __be32 version; |
| __be32 length; |
| __be64 mactime; |
| __be64 hosttime; |
| __be32 phytype; |
| __be32 channel; |
| __be32 datarate; |
| __be32 antenna; |
| __be32 priority; |
| __be32 ssi_type; |
| __be32 ssi_signal; |
| __be32 ssi_noise; |
| __be32 preamble; |
| __be32 encoding; |
| }; |
| |
| struct p80211_metawep { |
| void *data; |
| u8 iv[4]; |
| u8 icv[4]; |
| }; |
| |
| /* local ether header type */ |
| struct wlan_ethhdr { |
| u8 daddr[ETH_ALEN]; |
| u8 saddr[ETH_ALEN]; |
| __be16 type; |
| } __packed; |
| |
| /* local llc header type */ |
| struct wlan_llc { |
| u8 dsap; |
| u8 ssap; |
| u8 ctl; |
| } __packed; |
| |
| /* local snap header type */ |
| struct wlan_snap { |
| u8 oui[WLAN_IEEE_OUI_LEN]; |
| __be16 type; |
| } __packed; |
| |
| /* Circular include trick */ |
| struct wlandevice; |
| |
| int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv, |
| struct sk_buff *skb); |
| int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv, |
| struct sk_buff *skb, struct p80211_hdr *p80211_hdr, |
| struct p80211_metawep *p80211_wep); |
| |
| int p80211_stt_findproto(u16 proto); |
| |
| #endif |
