patch-1.3.33 linux/include/linux/if_pppvar.h

• Lines: 157
• Date: Mon Oct 9 09:17:54 1995
• Orig file: v1.3.32/linux/include/linux/if_pppvar.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.32/linux/include/linux/if_pppvar.h linux/include/linux/if_pppvar.h
@@ -0,0 +1,156 @@
+/*	$Id: if_pppvar.h,v 1.2 1995/06/12 11:36:51 paulus Exp $	*/
+/*
+ * if_pppvar.h - private structures and declarations for PPP.
+ *
+ * Copyright (c) 1994 The Australian National University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation is hereby granted, provided that the above copyright
+ * notice appears in all copies.  This software is provided without any
+ * warranty, express or implied. The Australian National University
+ * makes no representations about the suitability of this software for
+ * any purpose.
+ *
+ * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
+ * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
+ * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
+ * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
+ * OR MODIFICATIONS.
+ *
+ * Copyright (c) 1989 Carnegie Mellon University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by Carnegie Mellon University.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+ *  ==FILEVERSION 3==
+ *
+ *  NOTE TO MAINTAINERS:
+ *     If you modify this file at all, increment the number above.
+ *     if_pppvar.h is shipped with a PPP distribution as well as with the kernel;
+ *     if everyone increases the FILEVERSION number above, then scripts
+ *     can do the right thing when deciding whether to install a new if_pppvar.h
+ *     file.  Don't change the format of that line otherwise, so the
+ *     installation script can recognize it.
+ */
+
+/*
+ * Supported network protocols.  These values are used for
+ * indexing sc_npmode.
+ */
+
+#define NP_IP	0		/* Internet Protocol */
+#define NUM_NP	1		/* Number of NPs. */
+
+/*
+ * Buffers for the PPP process have the following structure
+ */
+
+#define RBUFSIZE  2048           /* MUST be a power of 2 and be <= 4095 */
+
+struct ppp_buffer {
+  int			size;		/* Size of the buffer area	*/
+  int			count;		/* Count of characters in bufr	*/
+  int			head;		/* index to head of list	*/
+  int			tail;		/* index to tail of list	*/
+  unsigned long		locked;		/* Buffer is being sent		*/
+  int			type;		/* Type of the buffer		*/
+					/* =0, device read buffer	*/
+					/* =1, device write buffer	*/
+					/* =2, daemon write buffer	*/
+					/* =3, daemon read buffer	*/
+  unsigned short	fcs;		/* Frame Check Sequence (CRC)	*/
+  unsigned char         filler[4];      /* Extra space if needed        */
+};
+
+/* Given a pointer to the ppp_buffer then return base address of buffer */
+#define buf_base(buf) ((u_char *) (&buf[1]))
+
+/*
+ * Structure describing each ppp unit.
+ */
+
+struct ppp {
+	int		magic;		/* magic value for structure	*/
+
+  /* Bitmapped flag fields. */
+	char		inuse;		/* are we allocated?		*/
+	char		escape;		/* 0x20 if prev char was PPP_ESC*/
+	char		toss;		/* toss this frame		*/
+
+	unsigned int	flags;		/* miscellany			*/
+
+	ext_accm	xmit_async_map; /* 1 bit means that given control 
+					   character is quoted on output*/
+
+	__u32		recv_async_map; /* 1 bit means that given control 
+					   character is ignored on input*/
+	int			mtu;	/* maximum xmit frame size	*/
+	int			mru;	/* maximum receive frame size	*/
+
+  /* Information about the current tty data */
+	int			line;		/* PPP channel number	*/
+	struct tty_struct	*tty;		/* ptr to TTY structure	*/
+	int			bytes_sent;	/* Bytes sent on frame	*/
+	int			bytes_rcvd;	/* Bytes recvd on frame	*/
+
+  /* Interface to the network layer */
+	struct device		*dev;	/* easy for intr handling	*/
+
+  /* VJ Header compression data */
+	struct slcompress	*slcomp;/* for header compression	*/
+
+  /* Transmission information */
+	struct ppp_buffer *xbuf;	/* Buffer currently being sent  */
+	struct ppp_buffer *s1buf;	/* Pointer to daemon buffer	*/
+	struct ppp_buffer *s2buf;	/* Pointer to device buffer	*/
+
+	__u32		  last_xmit;	/* time of last transmission	*/
+
+  /* These are pointers to the malloc()ed frame buffers.
+     These buffers are used while processing a packet.	If a packet
+     has to hang around for the user process to read it, it lingers in
+     the user buffers below. */
+
+	struct ppp_buffer *wbuf;	/* Transmission information	*/
+	struct ppp_buffer *tbuf;	/* daemon transmission buffer	*/
+	struct ppp_buffer *rbuf;	/* Receive information		*/
+	struct ppp_buffer *ubuf;	/* User buffer information	*/
+	struct ppp_buffer *cbuf;	/* compression buffer		*/
+
+  /* Queues for select() functionality */
+	struct wait_queue *write_wait;	/* queue for reading processes	*/
+	struct wait_queue *read_wait;	/* queue for writing processes	*/
+
+  /* Statistic information */
+	struct pppstat        stats;	/* statistic information	*/
+	struct ppp_idle       ddinfo;	/* demand dial information	*/
+
+  /* PPP compression protocol information */
+	u_int	sc_bytessent;		  /* count of octets sent */
+	u_int	sc_bytesrcvd;		  /* count of octets received */
+	enum	NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
+	struct	compressor *sc_xcomp;	  /* transmit compressor */
+	void	*sc_xc_state;		  /* transmit compressor state */
+	struct	compressor *sc_rcomp;	  /* receive decompressor */
+	void	*sc_rc_state;		  /* receive decompressor state */
+};