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Diffstat (limited to 'src/ccp.h')
| -rw-r--r-- | src/ccp.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/ccp.h b/src/ccp.h new file mode 100644 index 0000000..442936e --- /dev/null +++ b/src/ccp.h @@ -0,0 +1,165 @@ +/*- + * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> + * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> + * Internet Initiative Japan, Inc (IIJ) + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/usr.sbin/ppp/ccp.h,v 1.31.40.1 2010/12/21 17:10:29 kensmith Exp $ + */ + +#define CCP_MAXCODE CODE_RESETACK + +#define TY_OUI 0 /* OUI */ +#define TY_PRED1 1 /* Predictor type 1 */ +#define TY_PRED2 2 /* Predictor type 2 */ +#define TY_PUDDLE 3 /* Puddle Jumper */ +#define TY_HWPPC 16 /* Hewlett-Packard PPC */ +#define TY_STAC 17 /* Stac Electronics LZS */ +#define TY_MSPPC 18 /* Microsoft PPC */ +#define TY_MPPE 18 /* Microsoft PPE */ +#define TY_GAND 19 /* Gandalf FZA */ +#define TY_V42BIS 20 /* V.42bis compression */ +#define TY_BSD 21 /* BSD LZW Compress */ +#define TY_PPPD_DEFLATE 24 /* Deflate (gzip) - (mis) numbered by pppd */ +#define TY_DEFLATE 26 /* Deflate (gzip) - rfc 1979 */ + +#define CCP_NEG_DEFLATE 0 +#define CCP_NEG_PRED1 1 +#define CCP_NEG_DEFLATE24 2 +#ifndef NODES +#define CCP_NEG_MPPE 3 +#define CCP_NEG_TOTAL 4 +#else +#define CCP_NEG_TOTAL 3 +#endif + +#ifndef NODES +enum mppe_negstate { + MPPE_ANYSTATE, + MPPE_STATELESS, + MPPE_STATEFUL +}; +#endif + +struct mbuf; +struct link; + +struct ccp_config { + struct { + struct { + int winsize; + } in, out; + } deflate; +#ifndef NODES + struct { + int keybits; + enum mppe_negstate state; + unsigned required : 1; + } mppe; +#endif + struct fsm_retry fsm; /* How often/frequently to resend requests */ + unsigned neg[CCP_NEG_TOTAL]; +}; + +struct ccp_opt { + struct ccp_opt *next; + int algorithm; + struct fsm_opt val; +}; + +struct ccp { + struct fsm fsm; /* The finite state machine */ + + int his_proto; /* peer's compression protocol */ + int my_proto; /* our compression protocol */ + + int reset_sent; /* If != -1, ignore compressed 'till ack */ + int last_reset; /* We can receive more (dups) w/ this id */ + + struct { + int algorithm; /* Algorithm in use */ + void *state; /* Returned by implementations Init() */ + struct fsm_opt opt; /* Set by implementation's OptInit() */ + } in; + + struct { + int algorithm; /* Algorithm in use */ + void *state; /* Returned by implementations Init() */ + struct ccp_opt *opt; /* Set by implementation's OptInit() */ + } out; + + u_int32_t his_reject; /* Request codes rejected by peer */ + u_int32_t my_reject; /* Request codes I have rejected */ + + u_long uncompout, compout; /* Outgoing bytes before/after compression */ + u_long uncompin, compin; /* Incoming bytes after/before decompression */ + + struct ccp_config cfg; +}; + +#define fsm2ccp(fp) (fp->proto == PROTO_CCP ? (struct ccp *)fp : NULL) + +struct ccp_algorithm { + int id; + int Neg; /* ccp_config neg array item */ + const char *(*Disp)(struct fsm_opt *); /* Use result immediately ! */ + int (*Usable)(struct fsm *); /* Ok to negotiate ? */ + int (*Required)(struct fsm *); /* Must negotiate ? */ + struct { + int (*Set)(struct bundle *, struct fsm_opt *, const struct ccp_config *); + void *(*Init)(struct bundle *, struct fsm_opt *); + void (*Term)(void *); + void (*Reset)(void *); + struct mbuf *(*Read)(void *, struct ccp *, u_short *, struct mbuf *); + void (*DictSetup)(void *, struct ccp *, u_short, struct mbuf *); + } i; + struct { + int MTUOverhead; + void (*OptInit)(struct bundle *, struct fsm_opt *, + const struct ccp_config *); + int (*Set)(struct bundle *, struct fsm_opt *, const struct ccp_config *); + void *(*Init)(struct bundle *, struct fsm_opt *); + void (*Term)(void *); + int (*Reset)(void *); + struct mbuf *(*Write)(void *, struct ccp *, struct link *, int, u_short *, + struct mbuf *); + } o; +}; + +extern void ccp_Init(struct ccp *, struct bundle *, struct link *, + const struct fsm_parent *); +extern void ccp_Setup(struct ccp *); +extern int ccp_Required(struct ccp *); +extern int ccp_MTUOverhead(struct ccp *); + +extern void ccp_SendResetReq(struct fsm *); +extern struct mbuf *ccp_Input(struct bundle *, struct link *, struct mbuf *); +extern int ccp_ReportStatus(struct cmdargs const *); +extern u_short ccp_Proto(struct ccp *); +extern void ccp_SetupCallbacks(struct ccp *); +extern int ccp_SetOpenMode(struct ccp *); +extern int ccp_DefaultUsable(struct fsm *); +extern int ccp_DefaultRequired(struct fsm *); + +extern struct layer ccplayer; |