Add if_pppox.h, to avoid dependency on existence of linux-kernel source tree

diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
new file mode 100644 (file)
index 0000000..79684be
--- /dev/null
+++ b/include/linux/if_pppox.h
@@ -0,0 +1,145 @@
+/***************************************************************************
+ * 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_ZOMBIE        = 8,  /* dead, but still connected */
+    PPPOX_DEAD         = 16
+};
+
+extern struct ppp_channel_ops pppoe_chan_ops;
+
+extern int pppox_proto_init(struct net_proto *np);
+
+#endif /* __KERNEL__ */
+
+#endif /* !(__LINUX_IF_PPPOX_H) */