/* 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) 1989-2002 Paul Mackerras. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name(s) of the authors of this software must not be used to * endorse or promote products derived from this software without * prior written permission. * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Paul Mackerras * ". * * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name "Carnegie Mellon University" must not be used to * endorse or promote products derived from this software without * prior written permission. For permission or any legal * details, please contact * Office of Technology Transfer * Carnegie Mellon University * 5000 Forbes Avenue * Pittsburgh, PA 15213-3890 * (412) 268-4387, fax: (412) 268-7395 * tech-transfer@andrew.cmu.edu * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Computing Services * at Carnegie Mellon University (http://www.cmu.edu/computing/)." * * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * ==FILEVERSION 990911== * * 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 */ struct wait_queue *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[8]; /* space for unit name */ struct device dev; /* net device structure */ struct enet_statistics estats; /* more detailed stats */ /* tty output buffer */ unsigned char obuf[OBUFSIZE]; /* buffer for characters to send */ }; #define PPP_MAGIC 0x5002 #define PPP_VERSION "2.3.11"