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 35 extern int if_queued; /* Number of packets queued so far */ 36 37 extern struct mbuf if_fastq; /* fast queue (for interactive data) */ 38 extern struct mbuf if_batchq; /* queue for non-interactive data */ 39 extern 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 */ 45 struct 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