7358f4bb52
This fixes the panic that occurs when using ppp(4) Reported and tested by: Yann Berthier (yb at sainte-barbe dot org)
112 lines
4.9 KiB
C
112 lines
4.9 KiB
C
/*
|
|
* 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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Supported network protocols. These values are used for
|
|
* indexing sc_npmode.
|
|
*/
|
|
#define NP_IP 0 /* Internet Protocol */
|
|
#define NUM_NP 1 /* Number of NPs. */
|
|
|
|
/*
|
|
* Structure describing each ppp unit.
|
|
*/
|
|
struct ppp_softc {
|
|
struct ifnet sc_if; /* network-visible interface */
|
|
/*hi*/ u_int sc_flags; /* control/status bits; see if_ppp.h */
|
|
struct callout_handle sc_ch; /* Used for scheduling timeouts */
|
|
void *sc_devp; /* pointer to device-dep structure */
|
|
void (*sc_start)(struct ppp_softc *); /* start output proc */
|
|
void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
|
|
void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
|
|
void (*sc_setmtu)(struct ppp_softc *); /* set mtu */
|
|
short sc_mru; /* max receive unit */
|
|
pid_t sc_xfer; /* used in transferring unit */
|
|
/*hi*/ struct ifqueue sc_rawq; /* received packets */
|
|
/*net*/ struct ifqueue sc_inq; /* queue of input packets for daemon */
|
|
/*net*/ struct ifqueue sc_fastq; /* interactive output packet q */
|
|
struct mbuf *sc_npqueue; /* output packets not to be sent yet */
|
|
struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
|
|
struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
|
|
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 */
|
|
time_t sc_last_sent; /* time (secs) last NP pkt sent */
|
|
time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
|
|
#ifdef PPP_FILTER
|
|
struct bpf_program sc_pass_filt; /* filter for packets to pass */
|
|
struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
|
|
#endif /* PPP_FILTER */
|
|
#ifdef VJC
|
|
struct slcompress *sc_comp; /* vjc control buffer */
|
|
#endif
|
|
|
|
/* Device-dependent part for async lines. */
|
|
ext_accm sc_asyncmap; /* async control character map */
|
|
u_long sc_rasyncmap; /* receive async control char map */
|
|
struct mbuf *sc_outm; /* mbuf chain currently being output */
|
|
struct mbuf *sc_m; /* pointer to input mbuf chain */
|
|
struct mbuf *sc_mc; /* pointer to current input mbuf */
|
|
char *sc_mp; /* ptr to next char in input mbuf */
|
|
short sc_ilen; /* length of input packet so far */
|
|
u_short sc_fcs; /* FCS so far (input) */
|
|
u_short sc_outfcs; /* FCS so far for output packet */
|
|
u_char sc_rawin[16]; /* chars as received */
|
|
int sc_rawin_count; /* # in sc_rawin */
|
|
LIST_ENTRY(ppp_softc) sc_list;
|
|
};
|
|
|
|
struct ppp_softc *pppalloc(pid_t pid);
|
|
void pppdealloc(struct ppp_softc *sc);
|
|
int pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data, int flag,
|
|
struct thread *td);
|
|
int pppoutput(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst,
|
|
struct rtentry *rtp);
|
|
void ppp_restart(struct ppp_softc *sc);
|
|
void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
|
|
struct mbuf *ppp_dequeue(struct ppp_softc *sc);
|
|
struct ppp_softc *ppp_for_tty(struct tty *);
|