06337856e1
o If we've denied and disabled all compression protocols, stay in ST_INITIAL and do an LCP protocol reject if we receive any CCP packets. o If we've disabled all compression protocols, go to ST_STOPPED and wait for the other side to ask for something. o If we've got anything enabled, start REQing as soon as the auth layer is up. o If we're in multilink mode, than the link level CCP goes straight to ST_STOPPED irrespective of what's configured so that we never try to compress compressed stuff by default.
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/*
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* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
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*
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* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
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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 the Internet Initiative Japan. The name of the
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* IIJ 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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* $Id: ccp.h,v 1.18 1998/06/27 23:48:41 brian Exp $
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*
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* TODO:
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*/
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#define CCP_MAXCODE CODE_RESETACK
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#define TY_OUI 0 /* OUI */
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#define TY_PRED1 1 /* Predictor type 1 */
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#define TY_PRED2 2 /* Predictor type 2 */
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#define TY_PUDDLE 3 /* Puddle Jumper */
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#define TY_HWPPC 16 /* Hewlett-Packard PPC */
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#define TY_STAC 17 /* Stac Electronics LZS */
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#define TY_MSPPC 18 /* Microsoft PPC */
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#define TY_GAND 19 /* Gandalf FZA */
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#define TY_V42BIS 20 /* V.42bis compression */
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#define TY_BSD 21 /* BSD LZW Compress */
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#define TY_PPPD_DEFLATE 24 /* Deflate (gzip) - (mis) numbered by pppd */
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#define TY_DEFLATE 26 /* Deflate (gzip) - rfc 1979 */
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#define CCP_NEG_DEFLATE 0
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#define CCP_NEG_PRED1 1
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#define CCP_NEG_DEFLATE24 2
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#define CCP_NEG_TOTAL 3
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struct mbuf;
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struct link;
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struct ccp_config {
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struct {
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struct {
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int winsize;
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} in, out;
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} deflate;
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u_int fsmretry; /* FSM retry frequency */
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unsigned neg[CCP_NEG_TOTAL];
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};
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struct ccp_opt {
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struct ccp_opt *next;
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int algorithm;
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struct lcp_opt val;
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};
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struct ccp {
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struct fsm fsm; /* The finite state machine */
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int his_proto; /* peer's compression protocol */
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int my_proto; /* our compression protocol */
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int reset_sent; /* If != -1, ignore compressed 'till ack */
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int last_reset; /* We can receive more (dups) w/ this id */
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struct {
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int algorithm; /* Algorithm in use */
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void *state; /* Returned by implementations Init() */
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struct lcp_opt opt; /* Set by implementations OptInit() */
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} in;
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struct {
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int algorithm; /* Algorithm in use */
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void *state; /* Returned by implementations Init() */
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struct ccp_opt *opt; /* Set by implementations OptInit() */
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} out;
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u_int32_t his_reject; /* Request codes rejected by peer */
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u_int32_t my_reject; /* Request codes I have rejected */
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u_long uncompout, compout; /* Outgoing bytes before/after compression */
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u_long uncompin, compin; /* Incoming bytes after/before decompression */
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struct ccp_config cfg;
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};
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#define fsm2ccp(fp) (fp->proto == PROTO_CCP ? (struct ccp *)fp : NULL)
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struct ccp_algorithm {
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int id;
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int Neg; /* ccp_config neg array item */
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const char *(*Disp)(struct lcp_opt *); /* Use result immediately ! */
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struct {
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int (*Set)(struct lcp_opt *, const struct ccp_config *);
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void *(*Init)(struct lcp_opt *);
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void (*Term)(void *);
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void (*Reset)(void *);
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struct mbuf *(*Read)(void *, struct ccp *, u_short *, struct mbuf *);
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void (*DictSetup)(void *, struct ccp *, u_short, struct mbuf *);
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} i;
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struct {
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void (*OptInit)(struct lcp_opt *, const struct ccp_config *);
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int (*Set)(struct lcp_opt *);
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void *(*Init)(struct lcp_opt *);
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void (*Term)(void *);
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void (*Reset)(void *);
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int (*Write)(void *, struct ccp *, struct link *, int, u_short,
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struct mbuf *);
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} o;
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};
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extern void ccp_Init(struct ccp *, struct bundle *, struct link *,
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const struct fsm_parent *);
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extern void ccp_Setup(struct ccp *);
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extern void ccp_SendResetReq(struct fsm *);
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extern void ccp_Input(struct ccp *, struct bundle *, struct mbuf *);
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extern int ccp_ReportStatus(struct cmdargs const *);
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extern int ccp_Compress(struct ccp *, struct link *, int, u_short, struct mbuf *);
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extern struct mbuf *ccp_Decompress(struct ccp *, u_short *, struct mbuf *);
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extern u_short ccp_Proto(struct ccp *);
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extern void ccp_SetupCallbacks(struct ccp *);
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extern int ccp_SetOpenMode(struct ccp *);
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