1 files changed, 175 insertions, 0 deletions

diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
new file mode 100644
index 000000000000..e677f73f13dd
--- /dev/null
+++ b/include/linux/if_pppox.h
@@ -0,0 +1,175 @@
+/***************************************************************************
+ * 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 <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, size_t)
+#define PPPOEIOCDFWD    _IO(0xB1 ,1)
+/*#define PPPOEIOCGFWD  _IOWR(0xB1,2, size_t)*/
+
+/* 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 pppoe_opt {
+        struct net_device      *dev;      /* device associated with socket*/
+        struct pppoe_addr       pa;       /* what this socket is bound to*/
+        struct sockaddr_pppox   relay;    /* what socket data will be
+                                             relayed to (PPPoE relaying) */
+};
+
+#include <net/sock.h>
+
+struct pppox_sock {
+        /* struct sock must be the first member of pppox_sock */
+        struct sock             sk;
+        struct ppp_channel      chan;
+        struct pppox_sock       *next;    /* for hash table */
+        union {
+                struct pppoe_opt pppoe;
+        } proto;
+        unsigned short          num;
+};
+#define pppoe_dev       proto.pppoe.dev
+#define pppoe_pa        proto.pppoe.pa
+#define pppoe_relay     proto.pppoe.relay
+
+static inline struct pppox_sock *pppox_sk(struct sock *sk)
+{
+        return (struct pppox_sock *)sk;
+}
+
+static inline struct sock *sk_pppox(struct pppox_sock *po)
+{
+        return (struct sock *)po;
+}
+
+struct module;
+
+struct pppox_proto {
+        int             (*create)(struct socket *sock);
+        int             (*ioctl)(struct socket *sock, unsigned int cmd,
+                                 unsigned long arg);
+        struct module   *owner;
+};
+
+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);
+
+/* PPPoX 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_ZOMBIE        = 8,  /* dead, but still bound to ppp device */
+    PPPOX_DEAD          = 16  /* dead, useless, please clean me up!*/
+};
+
+#endif /* __KERNEL__ */
+
+#endif /* !(__LINUX_IF_PPPOX_H) */