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
36 #include <sys/param.h>
38 #include <sys/mutex.h>
39 #include <sys/types.h>
40 #include <sys/cdefs.h>
41 #include <sys/mount.h>
44 #include <netinet/in.h>
45 #include <netinet/in_systm.h>
51 struct iodesc sockets[SOPEN_MAX];
59 * initialize the generic network interface layer
65 struct netif_driver *drv;
70 printf("netif_init: called\n");
72 for (d = 0; netif_drivers[d]; d++) {
73 drv = netif_drivers[d];
74 for (i = 0; i < drv->netif_nifs; i++)
75 drv->netif_ifs[i].dif_used = 0;
80 netif_match(nif, machdep_hint)
84 struct netif_driver *drv = nif->nif_driver;
88 printf("%s%d: netif_match (%d)\n", drv->netif_bname,
89 nif->nif_unit, nif->nif_sel);
91 return drv->netif_match(nif, machdep_hint);
95 netif_select(machdep_hint)
98 int d, u, unit_done, s;
99 struct netif_driver *drv;
101 static struct netif best_if;
106 best_if.nif_driver = NULL;
108 for (d = 0; netif_drivers[d] != NULL; d++) {
109 cur_if.nif_driver = netif_drivers[d];
110 drv = cur_if.nif_driver;
112 for (u = 0; u < drv->netif_nifs; u++) {
118 printf("\t%s%d:", drv->netif_bname,
122 for (s = 0; s < drv->netif_ifs[u].dif_nsel; s++) {
125 if (drv->netif_ifs[u].dif_used & (1 << s)) {
128 printf(" [%d used]", s);
133 val = netif_match(&cur_if, machdep_hint);
136 printf(" [%d -> %d]", s, val);
138 if (val > best_val) {
150 if (best_if.nif_driver == NULL)
154 netif_ifs[best_if.nif_unit].dif_used |= (1 << best_if.nif_sel);
158 printf("netif_select: %s%d(%d) wins\n",
159 best_if.nif_driver->netif_bname,
160 best_if.nif_unit, best_if.nif_sel);
166 netif_probe(nif, machdep_hint)
170 struct netif_driver *drv = nif->nif_driver;
174 printf("%s%d: netif_probe\n", drv->netif_bname, nif->nif_unit);
176 return drv->netif_probe(nif, machdep_hint);
180 netif_attach(nif, desc, machdep_hint)
185 struct netif_driver *drv = nif->nif_driver;
189 printf("%s%d: netif_attach\n", drv->netif_bname, nif->nif_unit);
191 desc->io_netif = nif;
193 if (drv->netif_init == NULL)
194 panic("%s%d: no netif_init support\n", drv->netif_bname,
197 drv->netif_init(desc, machdep_hint);
198 bzero(drv->netif_ifs[nif->nif_unit].dif_stats,
199 sizeof(struct netif_stats));
206 struct netif_driver *drv = nif->nif_driver;
210 printf("%s%d: netif_detach\n", drv->netif_bname, nif->nif_unit);
213 if (drv->netif_end == NULL)
214 panic("%s%d: no netif_end support\n", drv->netif_bname,
221 netif_get(desc, pkt, len, timo)
228 struct netif *nif = desc->io_netif;
230 struct netif_driver *drv = desc->io_netif->nif_driver;
235 printf("%s%d: netif_get\n", drv->netif_bname, nif->nif_unit);
238 if (drv->netif_get == NULL)
239 panic("%s%d: no netif_get support\n", drv->netif_bname,
242 rv = drv->netif_get(desc, pkt, len, timo);
245 printf("%s%d: netif_get returning %d\n", drv->netif_bname,
246 nif->nif_unit, (int)rv);
252 netif_put(desc, pkt, len)
258 struct netif *nif = desc->io_netif;
260 struct netif_driver *drv = desc->io_netif->nif_driver;
265 printf("%s%d: netif_put\n", drv->netif_bname, nif->nif_unit);
268 if (drv->netif_put == NULL)
269 panic("%s%d: no netif_put support\n", drv->netif_bname,
272 rv = drv->netif_put(desc, pkt, len);
275 printf("%s%d: netif_put returning %d\n", drv->netif_bname,
276 nif->nif_unit, (int)rv);
285 if (sock >= SOPEN_MAX) {
289 return (&sockets[sock]);
293 netif_open(machdep_hint)
297 register struct iodesc *s;
300 /* find a free socket */
301 for (fd = 0, s = sockets; fd < SOPEN_MAX; fd++, s++)
302 if (s->io_netif == (struct netif *)0)
308 bzero(s, sizeof(*s));
310 nif = netif_select(machdep_hint);
312 panic("netboot: no interfaces left untried");
313 if (netif_probe(nif, machdep_hint)) {
314 printf("netboot: couldn't probe %s%d\n",
315 nif->nif_driver->netif_bname, nif->nif_unit);
319 netif_attach(nif, s, machdep_hint);
328 if (sock >= SOPEN_MAX) {
332 netif_detach(sockets[sock].io_netif);
333 sockets[sock].io_netif = (struct netif *)0;