1 /* $NetBSD: netif.c,v 1.10 1997/09/06 13:57:14 drochner Exp $ */
4 * Copyright (c) 1993 Adam Glass
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Adam Glass.
18 * 4. The name of the Author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/mount.h>
39 #include <netinet/in.h>
40 #include <netinet/in_systm.h>
46 struct iodesc sockets[SOPEN_MAX];
54 * initialize the generic network interface layer
60 struct netif_driver *drv;
65 printf("netif_init: called\n");
67 for (d = 0; netif_drivers[d]; d++) {
68 drv = netif_drivers[d];
69 for (i = 0; i < drv->netif_nifs; i++)
70 drv->netif_ifs[i].dif_used = 0;
75 netif_match(struct netif *nif, void *machdep_hint)
77 struct netif_driver *drv = nif->nif_driver;
81 printf("%s%d: netif_match (%d)\n", drv->netif_bname,
82 nif->nif_unit, nif->nif_sel);
84 return drv->netif_match(nif, machdep_hint);
88 netif_select(void *machdep_hint)
90 int d, u, unit_done, s;
91 struct netif_driver *drv;
93 static struct netif best_if;
98 best_if.nif_driver = NULL;
100 for (d = 0; netif_drivers[d] != NULL; d++) {
101 cur_if.nif_driver = netif_drivers[d];
102 drv = cur_if.nif_driver;
104 for (u = 0; u < drv->netif_nifs; u++) {
110 printf("\t%s%d:", drv->netif_bname,
114 for (s = 0; s < drv->netif_ifs[u].dif_nsel; s++) {
117 if (drv->netif_ifs[u].dif_used & (1 << s)) {
120 printf(" [%d used]", s);
125 val = netif_match(&cur_if, machdep_hint);
128 printf(" [%d -> %d]", s, val);
130 if (val > best_val) {
142 if (best_if.nif_driver == NULL)
146 netif_ifs[best_if.nif_unit].dif_used |= (1 << best_if.nif_sel);
150 printf("netif_select: %s%d(%d) wins\n",
151 best_if.nif_driver->netif_bname,
152 best_if.nif_unit, best_if.nif_sel);
158 netif_probe(struct netif *nif, void *machdep_hint)
160 struct netif_driver *drv = nif->nif_driver;
164 printf("%s%d: netif_probe\n", drv->netif_bname, nif->nif_unit);
166 return drv->netif_probe(nif, machdep_hint);
170 netif_attach(struct netif *nif, struct iodesc *desc, void *machdep_hint)
172 struct netif_driver *drv = nif->nif_driver;
176 printf("%s%d: netif_attach\n", drv->netif_bname, nif->nif_unit);
178 desc->io_netif = nif;
180 if (drv->netif_init == NULL)
181 panic("%s%d: no netif_init support\n", drv->netif_bname,
184 drv->netif_init(desc, machdep_hint);
185 bzero(drv->netif_ifs[nif->nif_unit].dif_stats,
186 sizeof(struct netif_stats));
190 netif_detach(struct netif *nif)
192 struct netif_driver *drv = nif->nif_driver;
196 printf("%s%d: netif_detach\n", drv->netif_bname, nif->nif_unit);
199 if (drv->netif_end == NULL)
200 panic("%s%d: no netif_end support\n", drv->netif_bname,
207 netif_get(struct iodesc *desc, void *pkt, size_t len, time_t timo)
210 struct netif *nif = desc->io_netif;
212 struct netif_driver *drv = desc->io_netif->nif_driver;
217 printf("%s%d: netif_get\n", drv->netif_bname, nif->nif_unit);
220 if (drv->netif_get == NULL)
221 panic("%s%d: no netif_get support\n", drv->netif_bname,
224 rv = drv->netif_get(desc, pkt, len, timo);
227 printf("%s%d: netif_get returning %d\n", drv->netif_bname,
228 nif->nif_unit, (int)rv);
234 netif_put(struct iodesc *desc, void *pkt, size_t len)
237 struct netif *nif = desc->io_netif;
239 struct netif_driver *drv = desc->io_netif->nif_driver;
244 printf("%s%d: netif_put\n", drv->netif_bname, nif->nif_unit);
247 if (drv->netif_put == NULL)
248 panic("%s%d: no netif_put support\n", drv->netif_bname,
251 rv = drv->netif_put(desc, pkt, len);
254 printf("%s%d: netif_put returning %d\n", drv->netif_bname,
255 nif->nif_unit, (int)rv);
263 if (sock >= SOPEN_MAX) {
267 return (&sockets[sock]);
271 netif_open(void *machdep_hint)
277 /* find a free socket */
278 for (fd = 0, s = sockets; fd < SOPEN_MAX; fd++, s++)
279 if (s->io_netif == NULL)
285 bzero(s, sizeof(*s));
287 nif = netif_select(machdep_hint);
289 panic("netboot: no interfaces left untried");
290 if (netif_probe(nif, machdep_hint)) {
291 printf("netboot: couldn't probe %s%d\n",
292 nif->nif_driver->netif_bname, nif->nif_unit);
296 netif_attach(nif, s, machdep_hint);
302 netif_close(int sock)
304 if (sock >= SOPEN_MAX) {
308 netif_detach(sockets[sock].io_netif);
309 sockets[sock].io_netif = NULL;