|
|
/*
* 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: src/sys/net/if_pppvar.h,v 1.26 2006/12/05 18:54:21 ume Exp $
*/
/*
* $Id$
*/
/*
* Supported network protocols. These values are used for
* indexing sc_npmode.
*/
#define NP_IP 0 /* Internet Protocol */
#define NUM_NP 1 /* Number of NPs. */
#define NUM_MBUFQ 64
/*
* Structure describing each ppp unit.
*/
struct ppp_softc {
struct ifnet sc_if; /* network-visible interface */
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 */
short sc_mru; /* max receive unit */
pid_t sc_xfer; /* used in transferring unit */
struct ifqueue sc_rawq; /* received packets */
struct ifqueue sc_inq; /* queue of input packets for daemon */
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 */
caddr_t sc_bpf; /* hook for BPF */
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 vjcompress *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_outmc; /* mbuf 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 */
struct ifqueue sc_freeq; /* free packets */
short sc_outoff; /* output packet byte offset */
short sc_outflag; /* output status flag */
short sc_outlen; /* length of output packet */
short sc_outfcslen; /* length of output fcs data */
u_char sc_outfcsbuf[8]; /* output packet fcs buffer */
u_char *sc_outbuf; /* pointer to output data */
u_char sc_outchar;
rtems_id sc_rxtask;
rtems_id sc_txtask;
rtems_id sc_pppdtask;
};
struct ppp_softc *pppalloc(pid_t pid);
void pppdealloc(struct ppp_softc *sc);
int pppoutput(struct ifnet *, struct mbuf *,
struct sockaddr *, struct rtentry *);
int pppioctl(struct ppp_softc *sc, ioctl_command_t cmd, caddr_t data,
int flag, struct proc *p);
struct mbuf *ppp_dequeue(struct ppp_softc *sc);
u_short pppfcs(u_short fcs, u_char *cp, int len);
void pppallocmbuf(struct ppp_softc *sc, struct mbuf **mp);
/* define event values */
#define RX_PACKET RTEMS_EVENT_1
#define RX_MBUF RTEMS_EVENT_2
#define RX_EMPTY RTEMS_EVENT_3
#define TX_PACKET RTEMS_EVENT_1
#define TX_TRANSMIT RTEMS_EVENT_2
#define PPPD_EVENT RTEMS_EVENT_31
/* define out flag values */
#define SC_TX_BUSY 0x0001
#define SC_TX_FCS 0x0002
#define SC_TX_ESCAPE 0x0004
#define SC_TX_LASTCHAR 0x0008
#define SC_TX_PENDING 0x0010
|
