1 /* $NetBSD: net.h,v 1.28 2019/03/31 20:08:45 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1993 Adam Glass 5 * Copyright (c) 1992 Regents of the University of California. 6 * All rights reserved. 7 * 8 * This software was developed by the Computer Systems Engineering group 9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 10 * contributed to Berkeley. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Lawrence Berkeley Laboratory and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #include <net/if_ether.h> /* for ETHER_ADDR_LEN */ 42 #include <netinet/in.h> 43 #include <netinet/in_systm.h> 44 45 #ifndef _KERNEL /* XXX - see <netinet/in.h> */ 46 #undef __IPADDR 47 #define __IPADDR(x) htonl((u_int32_t)(x)) 48 #endif 49 50 #ifdef _STANDALONE 51 #include <lib/libsa/iodesc.h> 52 #else 53 #include <iodesc.h> 54 #endif 55 56 #define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } 57 58 /* Returns true if n_long's on the same net */ 59 #define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m)) 60 61 #define MACPY(s, d) memcpy(d, s, ETHER_ADDR_LEN) 62 63 #define MAXTMO 20 /* seconds */ 64 #define MINTMO 2 /* seconds */ 65 66 #define FNAME_SIZE 128 67 #define IFNAME_SIZE 16 68 #define RECV_SIZE 1536 /* XXX delete this */ 69 70 /* 71 * How much room to leave for headers in UDP packets: 72 * 14: struct ether_header 73 * 20: struct ip 74 * 8: struct udphdr 75 * That's 42 but let's pad it out to 48 bytes. 76 */ 77 #define ETHERNET_HEADER_SIZE 14 78 #define IP_HEADER_SIZE 20 79 #define UDP_HEADER_SIZE 8 80 81 #define UDP_TOTAL_HEADER_SIZE (ETHERNET_HEADER_SIZE + IP_HEADER_SIZE + UDP_HEADER_SIZE) 82 83 /* 84 * How much room to leave for headers in TCP packets: 85 * 14: struct ether_header 86 * 20: struct ip 87 * 20: struct tcphdr 88 */ 89 #define TCP_HEADER_SIZE 20 90 91 #define TCP_TOTAL_HEADER_SIZE (ETHERNET_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE) 92 93 extern u_char bcea[ETHER_ADDR_LEN]; 94 extern char rootpath[FNAME_SIZE]; 95 extern char bootfile[FNAME_SIZE]; 96 extern char hostname[FNAME_SIZE]; 97 98 /* All of these are in network order. */ 99 extern struct in_addr myip; 100 extern struct in_addr rootip; 101 extern struct in_addr gateip; 102 extern n_long netmask; 103 104 extern int debug; /* defined in the machdep sources */ 105 106 /* ARP/RevARP functions: */ 107 u_char *arpwhohas(struct iodesc *, struct in_addr); 108 void arp_reply(struct iodesc *, void *); 109 int rarp_getipaddress(int); 110 111 /* Link functions: */ 112 ssize_t sendether(struct iodesc *, void *, size_t, u_char *, int); 113 ssize_t readether(struct iodesc *, void *, size_t, saseconds_t, u_int16_t *); 114 115 ssize_t sendip __P((struct iodesc *, void *, size_t, u_int8_t)); 116 ssize_t readip __P((struct iodesc *, void *, size_t, time_t, u_int8_t)); 117 118 ssize_t sendudp(struct iodesc *, void *, size_t); 119 ssize_t readudp(struct iodesc *, void *, size_t, saseconds_t); 120 121 int tcp_connect __P((struct iodesc *)); 122 ssize_t sendtcp __P((struct iodesc *, void *, size_t)); 123 ssize_t readtcp __P((struct iodesc *, void *, size_t, time_t)); 124 125 ssize_t sendrecv(struct iodesc *, ssize_t (*)(struct iodesc *, void *, size_t), 126 void *, size_t, ssize_t (*)(struct iodesc *, void *, size_t, saseconds_t), 127 void *, size_t); 128 129 /* Utilities: */ 130 char *ether_sprintf(const u_char *); 131 int ip_cksum(const void *, size_t); 132 133 /* Machine-dependent functions: */ 134 #ifdef _STANDALONE /* XXX for mount_nfs(8) SMALLPROG hack */ 135 satime_t getsecs(void); 136 #else 137 #define getsecs() time(NULL) 138 #endif 139