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/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
38 #include <sys/types.h>
39 #include <sys/cdefs.h>
40 #include <sys/mount.h>
43 #include <netinet/in.h>
44 #include <netinet/in_systm.h>
50 struct iodesc sockets[SOPEN_MAX];
58 * initialize the generic network interface layer
64 struct netif_driver *drv;
69 printf("netif_init: called\n");
71 for (d = 0; netif_drivers[d]; d++) {
72 drv = netif_drivers[d];
73 for (i = 0; i < drv->netif_nifs; i++)
74 drv->netif_ifs[i].dif_used = 0;
79 netif_match(struct netif *nif, void *machdep_hint)
81 struct netif_driver *drv = nif->nif_driver;
85 printf("%s%d: netif_match (%d)\n", drv->netif_bname,
86 nif->nif_unit, nif->nif_sel);
88 return drv->netif_match(nif, machdep_hint);
92 netif_select(void *machdep_hint)
94 int d, u, unit_done, s;
95 struct netif_driver *drv;
97 static struct netif best_if;
102 best_if.nif_driver = NULL;
104 for (d = 0; netif_drivers[d] != NULL; d++) {
105 cur_if.nif_driver = netif_drivers[d];
106 drv = cur_if.nif_driver;
108 for (u = 0; u < drv->netif_nifs; u++) {
114 printf("\t%s%d:", drv->netif_bname,
118 for (s = 0; s < drv->netif_ifs[u].dif_nsel; s++) {
121 if (drv->netif_ifs[u].dif_used & (1 << s)) {
124 printf(" [%d used]", s);
129 val = netif_match(&cur_if, machdep_hint);
132 printf(" [%d -> %d]", s, val);
134 if (val > best_val) {
146 if (best_if.nif_driver == NULL)
150 netif_ifs[best_if.nif_unit].dif_used |= (1 << best_if.nif_sel);
154 printf("netif_select: %s%d(%d) wins\n",
155 best_if.nif_driver->netif_bname,
156 best_if.nif_unit, best_if.nif_sel);
162 netif_probe(struct netif *nif, void *machdep_hint)
164 struct netif_driver *drv = nif->nif_driver;
168 printf("%s%d: netif_probe\n", drv->netif_bname, nif->nif_unit);
170 return drv->netif_probe(nif, machdep_hint);
174 netif_attach(struct netif *nif, struct iodesc *desc, void *machdep_hint)
176 struct netif_driver *drv = nif->nif_driver;
180 printf("%s%d: netif_attach\n", drv->netif_bname, nif->nif_unit);
182 desc->io_netif = nif;
184 if (drv->netif_init == NULL)
185 panic("%s%d: no netif_init support", drv->netif_bname,
188 drv->netif_init(desc, machdep_hint);
189 bzero(drv->netif_ifs[nif->nif_unit].dif_stats,
190 sizeof(struct netif_stats));
194 netif_detach(struct netif *nif)
196 struct netif_driver *drv = nif->nif_driver;
200 printf("%s%d: netif_detach\n", drv->netif_bname, nif->nif_unit);
203 if (drv->netif_end == NULL)
204 panic("%s%d: no netif_end support", drv->netif_bname,
211 netif_get(struct iodesc *desc, void **pkt, time_t timo)
214 struct netif *nif = desc->io_netif;
216 struct netif_driver *drv = desc->io_netif->nif_driver;
221 printf("%s%d: netif_get\n", drv->netif_bname, nif->nif_unit);
224 if (drv->netif_get == NULL)
225 panic("%s%d: no netif_get support", drv->netif_bname,
228 rv = drv->netif_get(desc, pkt, timo);
231 printf("%s%d: netif_get returning %d\n", drv->netif_bname,
232 nif->nif_unit, (int)rv);
238 netif_put(struct iodesc *desc, void *pkt, size_t len)
241 struct netif *nif = desc->io_netif;
243 struct netif_driver *drv = desc->io_netif->nif_driver;
248 printf("%s%d: netif_put\n", drv->netif_bname, nif->nif_unit);
251 if (drv->netif_put == NULL)
252 panic("%s%d: no netif_put support", drv->netif_bname,
255 rv = drv->netif_put(desc, pkt, len);
258 printf("%s%d: netif_put returning %d\n", drv->netif_bname,
259 nif->nif_unit, (int)rv);
267 if (sock >= SOPEN_MAX) {
271 return (&sockets[sock]);
275 netif_open(void *machdep_hint)
281 /* find a free socket */
282 for (fd = 0, s = sockets; fd < SOPEN_MAX; fd++, s++)
283 if (s->io_netif == (struct netif *)0)
289 bzero(s, sizeof(*s));
291 nif = netif_select(machdep_hint);
293 panic("netboot: no interfaces left untried");
294 if (netif_probe(nif, machdep_hint)) {
295 printf("netboot: couldn't probe %s%d\n",
296 nif->nif_driver->netif_bname, nif->nif_unit);
300 netif_attach(nif, s, machdep_hint);
306 netif_close(int sock)
308 if (sock >= SOPEN_MAX) {
312 netif_detach(sockets[sock].io_netif);
313 sockets[sock].io_netif = (struct netif *)0;