1 /* $NetBSD: netif_news.c,v 1.9 2014/09/21 16:35:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Gordon W. Ross 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * The Sun PROM has a fairly general set of network drivers, 30 * so it is easiest to just replace the netif module with 31 * this adaptation to the PROM network interface. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/socket.h> 36 37 #include <net/if.h> 38 #include <net/if_ether.h> 39 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 43 #include <lib/libsa/stand.h> 44 #include <lib/libsa/net.h> 45 #include <lib/libkern/libkern.h> 46 47 #include <machine/apcall.h> 48 #include <promdev.h> 49 50 #include "netif_news.h" 51 52 #ifdef NETIF_DEBUG 53 int netif_debug; 54 #endif 55 56 static struct iodesc sdesc; 57 58 struct iodesc * 59 socktodesc(int sock) 60 { 61 if (sock != 0) { 62 return NULL; 63 } 64 return &sdesc; 65 } 66 67 int 68 netif_news_open(struct romdev *pd) 69 { 70 struct iodesc *io; 71 72 /* find a free socket */ 73 io = &sdesc; 74 if (io->io_netif) { 75 #ifdef DEBUG 76 printf("netif_open: device busy\n"); 77 #endif 78 errno = ENFILE; 79 return -1; 80 } 81 memset(io, 0, sizeof(*io)); 82 83 io->io_netif = pd; 84 85 /* Put our ethernet address in io->myea */ 86 prom_getether(pd, io->myea); 87 88 return 0; 89 } 90 91 void 92 netif_news_close(int fd) 93 { 94 struct iodesc *io; 95 96 io = &sdesc; 97 io->io_netif = NULL; 98 } 99 100 /* 101 * Send a packet. The ether header is already there. 102 * Return the length sent (or -1 on error). 103 */ 104 ssize_t 105 netif_put(struct iodesc *desc, void *pkt, size_t len) 106 { 107 struct romdev *pd; 108 ssize_t rv; 109 size_t sendlen; 110 111 pd = (struct romdev *)desc->io_netif; 112 113 #ifdef NETIF_DEBUG 114 if (netif_debug) { 115 struct ether_header *eh; 116 117 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 118 desc, pkt, len); 119 eh = pkt; 120 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 121 printf("src: %s ", ether_sprintf(eh->ether_shost)); 122 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 123 } 124 #endif 125 126 sendlen = len; 127 if (sendlen < 60) { 128 sendlen = 60; 129 #ifdef NETIF_DEBUG 130 printf("netif_put: length padded to %d\n", sendlen); 131 #endif 132 } 133 134 rv = apcall_write(pd->fd, pkt, sendlen); 135 136 #ifdef NETIF_DEBUG 137 if (netif_debug) 138 printf("netif_put: xmit returned %d\n", rv); 139 #endif 140 141 return rv; 142 } 143 144 /* 145 * Receive a packet, including the ether header. 146 * Return the total length received (or -1 on error). 147 */ 148 ssize_t 149 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 150 { 151 struct romdev *pd; 152 satime_t tick0; 153 ssize_t len; 154 155 pd = (struct romdev *)desc->io_netif; 156 157 #ifdef NETIF_DEBUG 158 if (netif_debug) 159 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 160 pkt, maxlen, timo); 161 #endif 162 163 tick0 = getsecs(); 164 165 do { 166 len = apcall_read(pd->fd, pkt, maxlen); 167 } while ((len == 0) && ((getsecs() - tick0) < timo)); 168 169 #ifdef NETIF_DEBUG 170 if (netif_debug) 171 printf("netif_get: received len=%d\n", len); 172 #endif 173 174 if (len < 12) 175 return -1; 176 177 #ifdef NETIF_DEBUG 178 if (netif_debug) { 179 struct ether_header *eh = pkt; 180 181 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 182 printf("src: %s ", ether_sprintf(eh->ether_shost)); 183 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 184 } 185 #endif 186 187 return len; 188 } 189 190 int 191 prom_getether(struct romdev *pd, u_char *ea) 192 { 193 194 if (apcall_ioctl(pd->fd, APIOCGIFHWADDR, ea)) 195 return -1; 196 197 #ifdef BOOT_DEBUG 198 printf("hardware address %s\n", ether_sprintf(ea)); 199 #endif 200 201 return 0; 202 } 203 204 satime_t 205 getsecs(void) 206 { 207 u_int t[2]; 208 209 apcall_gettimeofday(t); /* time = t[0](s) + t[1](ns) */ 210 return t[0]; 211 } 212
Indexes created Thu Sep 25 14:09:45 GMT 2025