1/*
2 * Copyright (c) 1995 Danny Gasparovski.
3 *
4 * Please read the file COPYRIGHT for the
5 * terms and conditions of the copyright.
6 */
7
8#ifndef _IF_H_
9#define _IF_H_
10
11#define IF_COMPRESS	0x01	/* We want compression */
12#define IF_NOCOMPRESS	0x02	/* Do not do compression */
13#define IF_AUTOCOMP	0x04	/* Autodetect (default) */
14#define IF_NOCIDCOMP	0x08	/* CID compression */
15
16#define IF_MTU 1500
17#define IF_MRU 1500
18#define	IF_COMP IF_AUTOCOMP	/* Flags for compression */
19
20#if 0
21/*
22 * Set if_maxlinkhdr to 48 because it's 40 bytes for TCP/IP,
23 * and 8 bytes for PPP, but need to have it on an 8byte boundary
24 */
25#ifdef USE_PPP
26#define IF_MAXLINKHDR 48
27#else
28#define IF_MAXLINKHDR 40
29#endif
30#else
31        /* 2 for alignment, 14 for ethernet, 40 for TCP/IP */
32#define IF_MAXLINKHDR (2 + 14 + 40)
33#endif
34
35extern int	if_queued;	/* Number of packets queued so far */
36
37extern	struct mbuf if_fastq;                  /* fast queue (for interactive data) */
38extern	struct mbuf if_batchq;                 /* queue for non-interactive data */
39extern	struct mbuf *next_m;
40
41#define ifs_init(ifm) ((ifm)->ifs_next = (ifm)->ifs_prev = (ifm))
42
43#ifdef LOG_ENABLED
44/* Interface statistics */
45struct slirp_ifstats {
46	u_int out_pkts;		/* Output packets */
47	u_int out_bytes;		/* Output bytes */
48	u_int out_errpkts;	/* Output Error Packets */
49	u_int out_errbytes;	/* Output Error Bytes */
50	u_int in_pkts;		/* Input packets */
51	u_int in_bytes;		/* Input bytes */
52	u_int in_errpkts;		/* Input Error Packets */
53	u_int in_errbytes;	/* Input Error Bytes */
54
55	u_int bytes_saved;	/* Number of bytes that compression "saved" */
56				/* ie: number of bytes that didn't need to be sent over the link
57				 * because of compression */
58
59	u_int in_mbad;		/* Bad incoming packets */
60};
61#endif
62
63#endif
64