Import of Linux/MIPS 2.1.14

1 files changed, 157 insertions, 0 deletions

diff --git a/include/linux/if_pppvar.h b/include/linux/if_pppvar.h
new file mode 100644
index 000000000..1c7eb4f6d
--- /dev/null
+++ b/include/linux/if_pppvar.h
@@ -0,0 +1,157 @@
+/*	$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 960302==
+ *
+ *  NOTE TO MAINTAINERS:
+ *     If you modify this file at all, please set the above date.
+ *     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 {
+	__s32		size;		/* Size of the buffer area	*/
+        __s32		count;		/* Count of characters in bufr	*/
+        __s32		head;		/* index to head of list	*/
+        __s32		tail;		/* index to tail of list	*/
+        __u32		locked;		/* Buffer is being sent		*/
+        __s32		type;		/* Type of the buffer		*/
+					/* =0, device read buffer	*/
+					/* =1, device write buffer	*/
+					/* =2, daemon write buffer	*/
+					/* =3, daemon read buffer	*/
+        __u16		fcs;		/* Frame Check Sequence (CRC)	*/
+        __u8		filler[4];	/* Extra space if needed	*/
+};
+
+/* Given a pointer to the ppp_buffer then return base address of buffer */
+#define buf_base(buf) ((__u8 *) (&buf[1]))
+
+/*
+ * Structure describing each ppp unit.
+ */
+
+struct ppp {
+	__s32		magic;		/* magic value for structure	*/
+
+	/* Bitmapped flag fields. */
+	__u8		inuse;		/* are we allocated?		*/
+	__u8		escape;		/* 0x20 if prev char was PPP_ESC*/
+	__u8		toss;		/* toss this frame		*/
+
+	__u32		flags;		/* miscellany			*/
+
+	__u32		xmit_async_map[8]; /* 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*/
+	__s32			mtu;	/* maximum xmit frame size	*/
+	__s32			mru;	/* maximum receive frame size	*/
+
+	/* Information about the current tty data */
+	__s32			line;		/* PPP channel number	*/
+	struct tty_struct	*tty;		/* ptr to TTY structure	*/
+	__s32			bytes_sent;	/* Bytes sent on frame	*/
+	__s32			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 */
+	__u32	sc_bytessent;		  /* count of octets sent */
+	__u32	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 */
+	__s32	 sc_xfer;		  /* PID of reserved PPP table */
+};