/* $OpenBSD: if_pppvar.h,v 1.21 2024/02/28 16:08:34 denis 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 NP_IPV6 1 /* Internet Protocol v6 */ #define NUM_NP 2 /* 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_ */
