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/* if_pppvar.h,v 1.3 2002/03/27 14:36:07 joel 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) 1994 The Australian National University.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, provided that the above copyright
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* notice appears in all copies. This software is provided without any
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* warranty, express or implied. The Australian National University
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* makes no representations about the suitability of this software for
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* any purpose.
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*
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* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
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* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
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* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
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* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
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* OR MODIFICATIONS.
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*
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* Copyright (c) 1989 Carnegie Mellon University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by Carnegie Mellon University. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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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 NUM_NP 1 /* Number of NPs. */
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#define NUM_MBUFQ 64
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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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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) __P((struct ppp_softc *)); /* start output proc */
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void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
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void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
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short sc_mru; /* max receive unit */
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pid_t sc_xfer; /* used in transferring unit */
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struct ifqueue sc_rawq; /* received packets */
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struct ifqueue 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_npqueue; /* output packets not to be sent yet */
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struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
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struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
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caddr_t sc_bpf; /* hook for BPF */
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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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#ifdef PPP_FILTER
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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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#endif /* PPP_FILTER */
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#ifdef VJC
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struct vjcompress *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_long 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 mbuf *sc_outmc; /* mbuf currently being output */
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struct mbuf *sc_m; /* pointer to input mbuf chain */
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struct mbuf *sc_mc; /* pointer to current input mbuf */
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char *sc_mp; /* ptr to next char in input mbuf */
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short sc_ilen; /* length of input packet so far */
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u_short sc_fcs; /* FCS so far (input) */
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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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u_short sc_outfcs; /* FCS so far for output packet */
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struct ifqueue sc_freeq; /* free packets */
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short sc_outoff; /* output packet byte offset */
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short sc_outflag; /* output status flag */
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short sc_outlen; /* length of output packet */
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short sc_outfcslen; /* length of output fcs data */
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u_char sc_outfcsbuf[8]; /* output packet fcs buffer */
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u_char *sc_outbuf; /* pointer to output data */
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u_char sc_outchar;
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rtems_id sc_rxtask;
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rtems_id sc_txtask;
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rtems_id sc_pppdtask;
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};
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struct ppp_softc ppp_softc[NPPP];
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struct ppp_softc *pppalloc __P((pid_t pid));
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void pppdealloc __P((struct ppp_softc *sc));
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int pppoutput __P((struct ifnet *, struct mbuf *,
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struct sockaddr *, struct rtentry *));
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int pppioctl __P((struct ppp_softc *sc, int cmd, caddr_t data,
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int flag, struct proc *p));
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struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));
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u_short pppfcs __P((u_short fcs, u_char *cp, int len));
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void pppallocmbuf __P((struct ppp_softc *sc, struct mbuf **mp));
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/* define event values */
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#define RX_PACKET RTEMS_EVENT_1
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#define RX_MBUF RTEMS_EVENT_2
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#define RX_EMPTY RTEMS_EVENT_3
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#define TX_PACKET RTEMS_EVENT_1
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#define TX_TRANSMIT RTEMS_EVENT_2
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#define PPPD_EVENT RTEMS_EVENT_31
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/* define out flag values */
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#define SC_TX_BUSY 0x0001
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#define SC_TX_FCS 0x0002
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#define SC_TX_ESCAPE 0x0004
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#define SC_TX_PENDING 0x0010
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