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/*
* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
*
* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
*
* 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 the Internet Initiative Japan. The name of the
* IIJ 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $FreeBSD$
*
* TODO:
*/
#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_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
#define CCP_NEG_TOTAL 3
struct mbuf;
struct link;
struct ccp_config {
struct {
struct {
int winsize;
} in, out;
} deflate;
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 lcp_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 lcp_opt opt; /* Set by implementations OptInit() */
} in;
struct {
int algorithm; /* Algorithm in use */
void *state; /* Returned by implementations Init() */
struct ccp_opt *opt; /* Set by implementations 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 lcp_opt *); /* Use result immediately ! */
struct {
int (*Set)(struct lcp_opt *, const struct ccp_config *);
void *(*Init)(struct lcp_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 {
void (*OptInit)(struct lcp_opt *, const struct ccp_config *);
int (*Set)(struct lcp_opt *);
void *(*Init)(struct lcp_opt *);
void (*Term)(void *);
void (*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 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 struct layer ccplayer;
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