Annotation of sys/arch/sparc/stand/common/netif_sun.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: netif_sun.c,v 1.1 1997/09/17 10:46:18 downsj Exp $ */
! 2: /* $NetBSD: netif_sun.c,v 1.2 1995/09/18 21:31:48 pk Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1995 Gordon W. Ross
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: * 4. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by Gordon W. Ross
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: */
! 33:
! 34: /*
! 35: * The Sun PROM has a fairly general set of network drivers,
! 36: * so it is easiest to just replace the netif module with
! 37: * this adaptation to the PROM network interface.
! 38: */
! 39:
! 40: #include <sys/param.h>
! 41: #include <sys/socket.h>
! 42: #include <string.h>
! 43: #include <time.h>
! 44:
! 45: #include <net/if.h>
! 46:
! 47: #include <netinet/in.h>
! 48: #include <netinet/if_ether.h>
! 49: #include <netinet/in_systm.h>
! 50:
! 51: #include <lib/libsa/stand.h>
! 52: #include <lib/libsa/net.h>
! 53: #include <lib/libsa/netif.h>
! 54:
! 55: #include <sparc/stand/common/promdev.h>
! 56:
! 57: static struct netif netif_prom;
! 58:
! 59: #ifdef NETIF_DEBUG
! 60: int netif_debug;
! 61: #endif
! 62:
! 63: struct iodesc sockets[SOPEN_MAX];
! 64:
! 65: struct iodesc *
! 66: socktodesc(sock)
! 67: int sock;
! 68: {
! 69: if (sock != 0) {
! 70: return(NULL);
! 71: }
! 72: return (sockets);
! 73: }
! 74:
! 75: int
! 76: netif_open(machdep_hint)
! 77: void *machdep_hint;
! 78: {
! 79: struct promdata *pd = machdep_hint;
! 80: struct iodesc *io;
! 81: int fd, error;
! 82:
! 83: /* find a free socket */
! 84: io = sockets;
! 85: if (io->io_netif) {
! 86: #ifdef DEBUG
! 87: printf("netif_open: device busy\n");
! 88: #endif
! 89: errno = ENFILE;
! 90: return (-1);
! 91: }
! 92: bzero(io, sizeof(*io));
! 93:
! 94: netif_prom.nif_devdata = pd;
! 95: io->io_netif = &netif_prom;
! 96:
! 97: /* Put our ethernet address in io->myea */
! 98: prom_getether(pd->fd, io->myea);
! 99:
! 100: return(0);
! 101: }
! 102:
! 103: int
! 104: netif_close(fd)
! 105: int fd;
! 106: {
! 107: struct iodesc *io;
! 108: struct netif *ni;
! 109:
! 110: if (fd != 0) {
! 111: errno = EBADF;
! 112: return(-1);
! 113: }
! 114:
! 115: io = &sockets[fd];
! 116: ni = io->io_netif;
! 117: if (ni != NULL) {
! 118: ni->nif_devdata = NULL;
! 119: io->io_netif = NULL;
! 120: }
! 121: return(0);
! 122: }
! 123:
! 124: /*
! 125: * Send a packet. The ether header is already there.
! 126: * Return the length sent (or -1 on error).
! 127: */
! 128: ssize_t
! 129: netif_put(desc, pkt, len)
! 130: struct iodesc *desc;
! 131: void *pkt;
! 132: size_t len;
! 133: {
! 134: struct promdata *pd;
! 135: ssize_t rv;
! 136: size_t sendlen;
! 137:
! 138: pd = (struct promdata *)desc->io_netif->nif_devdata;
! 139:
! 140: #ifdef NETIF_DEBUG
! 141: if (netif_debug) {
! 142: struct ether_header *eh;
! 143:
! 144: printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
! 145: desc, pkt, len);
! 146: eh = pkt;
! 147: printf("dst: %s ", ether_sprintf(eh->ether_dhost));
! 148: printf("src: %s ", ether_sprintf(eh->ether_shost));
! 149: printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
! 150: }
! 151: #endif
! 152:
! 153: sendlen = len;
! 154: if (sendlen < 60) {
! 155: sendlen = 60;
! 156: #ifdef NETIF_DEBUG
! 157: printf("netif_put: length padded to %d\n", sendlen);
! 158: #endif
! 159: }
! 160:
! 161: rv = (*pd->xmit)(pd, pkt, sendlen);
! 162:
! 163: #ifdef NETIF_DEBUG
! 164: if (netif_debug)
! 165: printf("netif_put: xmit returned %d\n", rv);
! 166: #endif
! 167:
! 168: return rv;
! 169: }
! 170:
! 171: /*
! 172: * Receive a packet, including the ether header.
! 173: * Return the total length received (or -1 on error).
! 174: */
! 175: ssize_t
! 176: netif_get(desc, pkt, maxlen, timo)
! 177: struct iodesc *desc;
! 178: void *pkt;
! 179: size_t maxlen;
! 180: time_t timo;
! 181: {
! 182: struct promdata *pd;
! 183: int tick0, tmo_ticks;
! 184: ssize_t len;
! 185:
! 186: pd = (struct promdata *)desc->io_netif->nif_devdata;
! 187:
! 188: #ifdef NETIF_DEBUG
! 189: if (netif_debug)
! 190: printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
! 191: pkt, maxlen, timo);
! 192: #endif
! 193:
! 194: tmo_ticks = timo * hz;
! 195: tick0 = getticks();
! 196:
! 197: do {
! 198: len = (*pd->recv)(pd, pkt, maxlen);
! 199: } while ((len == 0) && ((getticks() - tick0) < tmo_ticks));
! 200:
! 201: #ifdef NETIF_DEBUG
! 202: if (netif_debug)
! 203: printf("netif_get: received len=%d\n", len);
! 204: #endif
! 205:
! 206: if (len < 12)
! 207: return -1;
! 208:
! 209: #ifdef NETIF_DEBUG
! 210: if (netif_debug) {
! 211: struct ether_header *eh = pkt;
! 212:
! 213: printf("dst: %s ", ether_sprintf(eh->ether_dhost));
! 214: printf("src: %s ", ether_sprintf(eh->ether_shost));
! 215: printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
! 216: }
! 217: #endif
! 218:
! 219: return len;
! 220: }
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