if_pppox.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:4k
- /***************************************************************************
- * Linux PPP over X - Generic PPP transport layer sockets
- * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
- *
- * This file supplies definitions required by the PPP over Ethernet driver
- * (pppox.c). All version information wrt this file is located in pppox.c
- *
- * License:
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
- #ifndef __LINUX_IF_PPPOX_H
- #define __LINUX_IF_PPPOX_H
- #include <asm/types.h>
- #include <asm/byteorder.h>
- #ifdef __KERNEL__
- #include <linux/if_ether.h>
- #include <linux/if.h>
- #include <linux/netdevice.h>
- #include <linux/sched.h>
- #include <asm/semaphore.h>
- #include <linux/ppp_channel.h>
- #endif /* __KERNEL__ */
- /* For user-space programs to pick up these definitions
- * which they wouldn't get otherwise without defining __KERNEL__
- */
- #ifndef AF_PPPOX
- #define AF_PPPOX 24
- #define PF_PPPOX AF_PPPOX
- #endif /* !(AF_PPPOX) */
- /************************************************************************
- * PPPoE addressing definition
- */
- typedef __u16 sid_t;
- struct pppoe_addr{
- sid_t sid; /* Session identifier */
- unsigned char remote[ETH_ALEN]; /* Remote address */
- char dev[IFNAMSIZ]; /* Local device to use */
- };
-
- /************************************************************************
- * Protocols supported by AF_PPPOX
- */
- #define PX_PROTO_OE 0 /* Currently just PPPoE */
- #define PX_MAX_PROTO 1
-
- struct sockaddr_pppox {
- sa_family_t sa_family; /* address family, AF_PPPOX */
- unsigned int sa_protocol; /* protocol identifier */
- union{
- struct pppoe_addr pppoe;
- }sa_addr;
- }__attribute__ ((packed));
- /*********************************************************************
- *
- * ioctl interface for defining forwarding of connections
- *
- ********************************************************************/
- #define PPPOEIOCSFWD _IOW(0xB1 ,0, sizeof(struct sockaddr_pppox))
- #define PPPOEIOCDFWD _IO(0xB1 ,1)
- /*#define PPPOEIOCGFWD _IOWR(0xB1,2, sizeof(struct sockaddr_pppox))*/
- /* Codes to identify message types */
- #define PADI_CODE 0x09
- #define PADO_CODE 0x07
- #define PADR_CODE 0x19
- #define PADS_CODE 0x65
- #define PADT_CODE 0xa7
- struct pppoe_tag {
- __u16 tag_type;
- __u16 tag_len;
- char tag_data[0];
- } __attribute ((packed));
- /* Tag identifiers */
- #define PTT_EOL __constant_htons(0x0000)
- #define PTT_SRV_NAME __constant_htons(0x0101)
- #define PTT_AC_NAME __constant_htons(0x0102)
- #define PTT_HOST_UNIQ __constant_htons(0x0103)
- #define PTT_AC_COOKIE __constant_htons(0x0104)
- #define PTT_VENDOR __constant_htons(0x0105)
- #define PTT_RELAY_SID __constant_htons(0x0110)
- #define PTT_SRV_ERR __constant_htons(0x0201)
- #define PTT_SYS_ERR __constant_htons(0x0202)
- #define PTT_GEN_ERR __constant_htons(0x0203)
- struct pppoe_hdr {
- #if defined(__LITTLE_ENDIAN_BITFIELD)
- __u8 ver : 4;
- __u8 type : 4;
- #elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 type : 4;
- __u8 ver : 4;
- #else
- #error "Please fix <asm/byteorder.h>"
- #endif
- __u8 code;
- __u16 sid;
- __u16 length;
- struct pppoe_tag tag[0];
- } __attribute__ ((packed));
- #ifdef __KERNEL__
- struct pppox_proto {
- int (*create)(struct socket *sock);
- int (*ioctl)(struct socket *sock, unsigned int cmd,
- unsigned long arg);
- };
- extern int register_pppox_proto(int proto_num, struct pppox_proto *pp);
- extern void unregister_pppox_proto(int proto_num);
- extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */
- extern int pppox_channel_ioctl(struct ppp_channel *pc, unsigned int cmd,
- unsigned long arg);
- /* PPPoE socket states */
- enum {
- PPPOX_NONE = 0, /* initial state */
- PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */
- PPPOX_BOUND = 2, /* bound to ppp device */
- PPPOX_RELAY = 4, /* forwarding is enabled */
- PPPOX_DEAD = 8
- };
- extern struct ppp_channel_ops pppoe_chan_ops;
- extern int pppox_proto_init(struct net_proto *np);
- #endif /* __KERNEL__ */
- #endif /* !(__LINUX_IF_PPPOX_H) */