a40fdd98b0
4096 - sizeof struct mbuf, and set MAX_MRU and MAX_MTU back to 2048. 2048 is big enough as an MTU/MRU, but we need to be able to allocate larger mbufs after reassembling IP fragments.
104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/*
|
|
* 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:
|
|
*/
|
|
|
|
/*
|
|
* Definition for Async HDLC
|
|
*/
|
|
#define HDLC_SYN 0x7e /* SYNC character */
|
|
#define HDLC_ESC 0x7d /* Escape character */
|
|
#define HDLC_XOR 0x20 /* Modifier value */
|
|
|
|
#define HDLC_ADDR 0xff
|
|
#define HDLC_UI 0x03
|
|
/*
|
|
* Definition for HDLC Frame Check Sequence
|
|
*/
|
|
#define INITFCS 0xffff /* Initial value for FCS computation */
|
|
#define GOODFCS 0xf0b8 /* Good FCS value */
|
|
|
|
#define DEF_MRU 1500
|
|
#define MAX_MRU 2048
|
|
#define MIN_MRU 296
|
|
|
|
#define DEF_MTU 0 /* whatever peer says */
|
|
#define MAX_MTU 2048
|
|
#define MIN_MTU 296
|
|
|
|
struct physical;
|
|
struct link;
|
|
struct lcp;
|
|
struct bundle;
|
|
struct mbuf;
|
|
struct cmdargs;
|
|
|
|
struct hdlc {
|
|
struct pppTimer ReportTimer;
|
|
|
|
struct {
|
|
int badfcs;
|
|
int badaddr;
|
|
int badcommand;
|
|
int unknownproto;
|
|
} laststats, stats;
|
|
|
|
struct {
|
|
struct lcp *owner; /* parent LCP */
|
|
struct pppTimer timer; /* When to send */
|
|
int method; /* bit-mask for LQM_* from lqr.h */
|
|
|
|
u_int32_t OutPackets; /* Packets sent by me */
|
|
u_int32_t OutOctets; /* Octets sent by me */
|
|
u_int32_t SaveInPackets; /* Packets received from peer */
|
|
u_int32_t SaveInDiscards; /* Discards */
|
|
u_int32_t SaveInErrors; /* Errors */
|
|
u_int32_t SaveInOctets; /* Octets received from peer */
|
|
|
|
struct {
|
|
u_int32_t OutLQRs; /* LQRs sent by me */
|
|
u_int32_t SaveInLQRs; /* LQRs received from peer */
|
|
struct lqrdata peer; /* Last LQR from peer */
|
|
int peer_timeout; /* peers max lqr timeout */
|
|
int resent; /* Resent last packet `resent' times */
|
|
} lqr;
|
|
|
|
struct {
|
|
u_int32_t seq_sent; /* last echo sent */
|
|
u_int32_t seq_recv; /* last echo received */
|
|
} echo;
|
|
} lqm;
|
|
};
|
|
|
|
|
|
extern void hdlc_Init(struct hdlc *, struct lcp *);
|
|
extern void hdlc_StartTimer(struct hdlc *);
|
|
extern void hdlc_StopTimer(struct hdlc *);
|
|
extern int hdlc_ReportStatus(struct cmdargs const *);
|
|
extern const char *hdlc_Protocol2Nam(u_short);
|
|
extern void hdlc_DecodePacket(struct bundle *, u_short, struct mbuf *,
|
|
struct link *);
|
|
|
|
extern u_short hdlc_Fcs(u_char *, size_t);
|
|
extern int hdlc_Detect(u_char const **, int, int);
|
|
extern int hdlc_WrapperOctets(struct lcp *, u_short);
|
|
|
|
extern struct layer hdlclayer;
|