| /* From: 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 990806== |
| * |
| * 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 NP_IPX 1 /* IPX protocol */ |
| #define NP_AT 2 /* Appletalk protocol */ |
| #define NP_IPV6 3 /* Internet Protocol */ |
| #define NUM_NP 4 /* Number of NPs. */ |
| |
| #define OBUFSIZE 256 /* # chars of output buffering */ |
| |
| /* |
| * Structure describing each ppp unit. |
| */ |
| |
| struct ppp { |
| int magic; /* magic value for structure */ |
| struct ppp *next; /* unit with next index */ |
| unsigned long inuse; /* are we allocated? */ |
| int line; /* network interface unit # */ |
| __u32 flags; /* miscellaneous control flags */ |
| int mtu; /* maximum xmit frame size */ |
| int mru; /* maximum receive frame size */ |
| struct slcompress *slcomp; /* for TCP header compression */ |
| struct sk_buff_head xmt_q; /* frames to send from pppd */ |
| struct sk_buff_head rcv_q; /* frames for pppd to read */ |
| unsigned long xmit_busy; /* bit 0 set when xmitter busy */ |
| |
| /* Information specific to using ppp on async serial lines. */ |
| struct tty_struct *tty; /* ptr to TTY structure */ |
| struct tty_struct *backup_tty; /* TTY to use if tty gets closed */ |
| __u8 escape; /* 0x20 if prev char was PPP_ESC */ |
| __u8 toss; /* toss this frame */ |
| volatile __u8 tty_pushing; /* internal state flag */ |
| volatile __u8 woke_up; /* internal state flag */ |
| __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*/ |
| __u32 bytes_sent; /* Bytes sent on frame */ |
| __u32 bytes_rcvd; /* Bytes recvd on frame */ |
| |
| /* Async transmission information */ |
| struct sk_buff *tpkt; /* frame currently being sent */ |
| int tpkt_pos; /* how much of it we've done */ |
| __u16 tfcs; /* FCS so far for it */ |
| unsigned char *optr; /* where we're up to in sending */ |
| unsigned char *olim; /* points past last valid char */ |
| |
| /* Async reception information */ |
| struct sk_buff *rpkt; /* frame currently being rcvd */ |
| __u16 rfcs; /* FCS so far of rpkt */ |
| |
| /* Queues for select() functionality */ |
| wait_queue_head_t read_wait; /* queue for reading processes */ |
| |
| /* info for detecting idle channels */ |
| unsigned long last_xmit; /* time of last transmission */ |
| unsigned long last_recv; /* time last packet received */ |
| |
| /* Statistic information */ |
| struct pppstat stats; /* statistic information */ |
| |
| /* PPP compression protocol information */ |
| 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 */ |
| |
| enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */ |
| int sc_xfer; /* PID of reserved PPP table */ |
| char name[16]; /* space for unit name */ |
| struct net_device dev; /* net device structure */ |
| struct net_device_stats estats; /* more detailed stats */ |
| |
| /* tty output buffer */ |
| unsigned char obuf[OBUFSIZE]; /* buffer for characters to send */ |
| }; |
| |
| #define PPP_MAGIC 0x5002 |
| #define PPP_VERSION "2.3.7" |
