179 lines
7.0 KiB
C
179 lines
7.0 KiB
C
/* $OpenBSD: if_pppvar.h,v 1.21 2024/02/28 16:08:34 denis Exp $ */
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/* $NetBSD: if_pppvar.h,v 1.5 1997/01/03 07:23:29 mikel Exp $ */
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/*
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* if_pppvar.h - private structures and declarations for PPP.
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*
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* Copyright (c) 1989-2002 Paul Mackerras. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The name(s) of the authors of this software must not be used to
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* endorse or promote products derived from this software without
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* prior written permission.
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*
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* 4. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by Paul Mackerras
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* <paulus@samba.org>".
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*
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* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The name "Carnegie Mellon University" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For permission or any legal
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* details, please contact
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* Office of Technology Transfer
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* Carnegie Mellon University
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* 5000 Forbes Avenue
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* Pittsburgh, PA 15213-3890
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* (412) 268-4387, fax: (412) 268-7395
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* tech-transfer@andrew.cmu.edu
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*
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* 4. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by Computing Services
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* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
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*
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* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _NET_IF_PPPVAR_H_
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#define _NET_IF_PPPVAR_H_
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/*
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* Supported network protocols. These values are used for
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* indexing sc_npmode.
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*/
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#define NP_IP 0 /* Internet Protocol */
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#define NP_IPV6 1 /* Internet Protocol v6 */
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#define NUM_NP 2 /* Number of NPs. */
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struct ppp_pkt;
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struct ppp_pkt_list {
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struct mutex pl_mtx;
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struct ppp_pkt *pl_head;
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struct ppp_pkt *pl_tail;
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u_int pl_count;
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u_int pl_limit;
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};
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/*
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* Structure describing each ppp unit.
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*/
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struct ppp_softc {
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struct ifnet sc_if; /* network-visible interface */
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struct timeout sc_timo; /* timeout control (for ptys) */
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int sc_unit; /* XXX unit number */
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u_int sc_flags; /* control/status bits; see if_ppp.h */
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void *sc_devp; /* pointer to device-dep structure */
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void (*sc_start)(struct ppp_softc *); /* start output proc */
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void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
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void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
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u_int16_t sc_mru; /* max receive unit */
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pid_t sc_xfer; /* used in transferring unit */
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struct ppp_pkt_list sc_rawq; /* received packets */
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struct mbuf_queue sc_inq; /* queue of input packets for daemon */
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struct ifqueue sc_fastq; /* interactive output packet q */
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struct mbuf *sc_togo; /* output packet ready to go */
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struct mbuf_list sc_npqueue; /* output packets not to be sent yet */
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struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
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enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
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struct compressor *sc_xcomp; /* transmit compressor */
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void *sc_xc_state; /* transmit compressor state */
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struct compressor *sc_rcomp; /* receive decompressor */
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void *sc_rc_state; /* receive decompressor state */
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time_t sc_last_sent; /* time (secs) last NP pkt sent */
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time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
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struct bpf_program sc_pass_filt; /* filter for packets to pass */
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struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
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#ifdef VJC
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struct slcompress *sc_comp; /* vjc control buffer */
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#endif
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/* Device-dependent part for async lines. */
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ext_accm sc_asyncmap; /* async control character map */
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u_int32_t sc_rasyncmap; /* receive async control char map */
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struct mbuf *sc_outm; /* mbuf chain currently being output */
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struct ppp_pkt *sc_pkt; /* pointer to input pkt chain */
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struct ppp_pkt *sc_pktc; /* pointer to current input pkt */
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uint8_t *sc_pktp; /* ptr to next char in input pkt */
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u_int16_t sc_ilen; /* length of input packet so far */
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u_int16_t sc_fcs; /* FCS so far (input) */
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u_int16_t sc_outfcs; /* FCS so far for output packet */
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u_char sc_rawin[16]; /* chars as received */
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int sc_rawin_count; /* # in sc_rawin */
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LIST_ENTRY(ppp_softc) sc_list; /* all ppp interfaces */
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};
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#ifdef _KERNEL
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struct ppp_pkt_hdr {
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struct ppp_pkt *ph_next; /* next in pkt chain */
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struct ppp_pkt *ph_pkt; /* prev in chain or next in list */
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uint16_t ph_len;
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uint16_t ph_errmark;
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};
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struct ppp_pkt {
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struct ppp_pkt_hdr p_hdr;
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uint8_t p_buf[MCLBYTES - sizeof(struct ppp_pkt_hdr)];
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};
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void ppp_pkt_free(struct ppp_pkt *);
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#define PKT_NEXT(_p) ((_p)->p_hdr.ph_next)
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#define PKT_PREV(_p) ((_p)->p_hdr.ph_pkt)
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#define PKT_NEXTPKT(_p) ((_p)->p_hdr.ph_pkt)
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#define PKT_LEN(_p) ((_p)->p_hdr.ph_len)
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extern struct ppp_softc ppp_softc[];
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struct ppp_softc *pppalloc(pid_t pid);
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void pppdealloc(struct ppp_softc *sc);
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int pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data,
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int flag, struct proc *p);
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void ppppktin(struct ppp_softc *sc, struct ppp_pkt *pkt, int lost);
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struct mbuf *ppp_dequeue(struct ppp_softc *sc);
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void ppp_restart(struct ppp_softc *sc);
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int pppoutput(struct ifnet *, struct mbuf *,
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struct sockaddr *, struct rtentry *);
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#endif /* _KERNEL */
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#endif /* _NET_IF_PPPVAR_H_ */
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