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/* $OpenBSD: if_pppvar.h,v 1.20 2020/05/20 06:44:30 mpi Exp $ */
/* $NetBSD: if_pppvar.h,v 1.5 1997/01/03 07:23:29 mikel 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
* <paulus@samba.org>".
*
* 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.
*/
#ifndef _NET_IF_PPPVAR_H_
#define _NET_IF_PPPVAR_H_
/*
* Supported network protocols. These values are used for
* indexing sc_npmode.
*/
#define NP_IP 0 /* Internet Protocol */
#define NUM_NP 1 /* Number of NPs. */
struct ppp_pkt;
struct ppp_pkt_list {
struct mutex pl_mtx;
struct ppp_pkt *pl_head;
struct ppp_pkt *pl_tail;
u_int pl_count;
u_int pl_limit;
};
/*
* Structure describing each ppp unit.
*/
struct ppp_softc {
struct ifnet sc_if; /* network-visible interface */
struct timeout sc_timo; /* timeout control (for ptys) */
int sc_unit; /* XXX unit number */
u_int sc_flags; /* control/status bits; see if_ppp.h */
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 */
u_int16_t sc_mru; /* max receive unit */
pid_t sc_xfer; /* used in transferring unit */
struct ppp_pkt_list sc_rawq; /* received packets */
struct mbuf_queue sc_inq; /* queue of input packets for daemon */
struct ifqueue sc_fastq; /* interactive output packet q */
struct mbuf *sc_togo; /* output packet ready to go */
struct mbuf_list sc_npqueue; /* output packets not to be sent yet */
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 */
struct bpf_program sc_pass_filt; /* filter for packets to pass */
struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
#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_int32_t sc_rasyncmap; /* receive async control char map */
struct mbuf *sc_outm; /* mbuf chain currently being output */
struct ppp_pkt *sc_pkt; /* pointer to input pkt chain */
struct ppp_pkt *sc_pktc; /* pointer to current input pkt */
uint8_t *sc_pktp; /* ptr to next char in input pkt */
u_int16_t sc_ilen; /* length of input packet so far */
u_int16_t sc_fcs; /* FCS so far (input) */
u_int16_t 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; /* all ppp interfaces */
};
#ifdef _KERNEL
struct ppp_pkt_hdr {
struct ppp_pkt *ph_next; /* next in pkt chain */
struct ppp_pkt *ph_pkt; /* prev in chain or next in list */
uint16_t ph_len;
uint16_t ph_errmark;
};
struct ppp_pkt {
struct ppp_pkt_hdr p_hdr;
uint8_t p_buf[MCLBYTES - sizeof(struct ppp_pkt_hdr)];
};
void ppp_pkt_free(struct ppp_pkt *);
#define PKT_NEXT(_p) ((_p)->p_hdr.ph_next)
#define PKT_PREV(_p) ((_p)->p_hdr.ph_pkt)
#define PKT_NEXTPKT(_p) ((_p)->p_hdr.ph_pkt)
#define PKT_LEN(_p) ((_p)->p_hdr.ph_len)
extern struct ppp_softc ppp_softc[];
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 proc *p);
void ppppktin(struct ppp_softc *sc, struct ppp_pkt *pkt, int lost);
struct mbuf *ppp_dequeue(struct ppp_softc *sc);
void ppp_restart(struct ppp_softc *sc);
int pppoutput(struct ifnet *, struct mbuf *,
struct sockaddr *, struct rtentry *);
#endif /* _KERNEL */
#endif /* _NET_IF_PPPVAR_H_ */
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