Use CSTD and remove local CSTD settings which are no longer needed.
[dragonfly.git] / lib / libstand / netif.c
CommitLineData
984263bc 1/* $NetBSD: netif.c,v 1.10 1997/09/06 13:57:14 drochner Exp $ */
ff2aef30 2/* $DragonFly: src/lib/libstand/netif.c,v 1.3 2005/12/11 02:27:26 swildner Exp $ */
984263bc
MD
3
4/*
5 * Copyright (c) 1993 Adam Glass
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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Adam Glass.
19 * 4. The name of the Author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/param.h>
36#include <sys/types.h>
37#include <sys/cdefs.h>
38#include <sys/mount.h>
39#include <string.h>
40
41#include <netinet/in.h>
42#include <netinet/in_systm.h>
43
44#include "stand.h"
45#include "net.h"
46#include "netif.h"
47
48struct iodesc sockets[SOPEN_MAX];
49#ifdef NETIF_DEBUG
50int netif_debug = 0;
51#endif
52
53/*
54 * netif_init:
55 *
56 * initialize the generic network interface layer
57 */
58
59void
ff2aef30 60netif_init(void)
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61{
62 struct netif_driver *drv;
63 int d, i;
64
65#ifdef NETIF_DEBUG
66 if (netif_debug)
67 printf("netif_init: called\n");
68#endif
69 for (d = 0; netif_drivers[d]; d++) {
70 drv = netif_drivers[d];
71 for (i = 0; i < drv->netif_nifs; i++)
72 drv->netif_ifs[i].dif_used = 0;
73 }
74}
75
76int
ff2aef30 77netif_match(struct netif *nif, void *machdep_hint)
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78{
79 struct netif_driver *drv = nif->nif_driver;
80
81#if 0
82 if (netif_debug)
83 printf("%s%d: netif_match (%d)\n", drv->netif_bname,
84 nif->nif_unit, nif->nif_sel);
85#endif
86 return drv->netif_match(nif, machdep_hint);
87}
88
89struct netif *
ff2aef30 90netif_select(void *machdep_hint)
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91{
92 int d, u, unit_done, s;
93 struct netif_driver *drv;
94 struct netif cur_if;
95 static struct netif best_if;
96 int best_val;
97 int val;
98
99 best_val = 0;
100 best_if.nif_driver = NULL;
101
102 for (d = 0; netif_drivers[d] != NULL; d++) {
103 cur_if.nif_driver = netif_drivers[d];
104 drv = cur_if.nif_driver;
105
106 for (u = 0; u < drv->netif_nifs; u++) {
107 cur_if.nif_unit = u;
108 unit_done = 0;
109
110#ifdef NETIF_DEBUG
111 if (netif_debug)
112 printf("\t%s%d:", drv->netif_bname,
113 cur_if.nif_unit);
114#endif
115
116 for (s = 0; s < drv->netif_ifs[u].dif_nsel; s++) {
117 cur_if.nif_sel = s;
118
119 if (drv->netif_ifs[u].dif_used & (1 << s)) {
120#ifdef NETIF_DEBUG
121 if (netif_debug)
122 printf(" [%d used]", s);
123#endif
124 continue;
125 }
126
127 val = netif_match(&cur_if, machdep_hint);
128#ifdef NETIF_DEBUG
129 if (netif_debug)
130 printf(" [%d -> %d]", s, val);
131#endif
132 if (val > best_val) {
133 best_val = val;
134 best_if = cur_if;
135 }
136 }
137#ifdef NETIF_DEBUG
138 if (netif_debug)
139 printf("\n");
140#endif
141 }
142 }
143
144 if (best_if.nif_driver == NULL)
145 return NULL;
146
147 best_if.nif_driver->
148 netif_ifs[best_if.nif_unit].dif_used |= (1 << best_if.nif_sel);
149
150#ifdef NETIF_DEBUG
151 if (netif_debug)
152 printf("netif_select: %s%d(%d) wins\n",
153 best_if.nif_driver->netif_bname,
154 best_if.nif_unit, best_if.nif_sel);
155#endif
156 return &best_if;
157}
158
159int
ff2aef30 160netif_probe(struct netif *nif, void *machdep_hint)
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MD
161{
162 struct netif_driver *drv = nif->nif_driver;
163
164#ifdef NETIF_DEBUG
165 if (netif_debug)
166 printf("%s%d: netif_probe\n", drv->netif_bname, nif->nif_unit);
167#endif
168 return drv->netif_probe(nif, machdep_hint);
169}
170
171void
ff2aef30 172netif_attach(struct netif *nif, struct iodesc *desc, void *machdep_hint)
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MD
173{
174 struct netif_driver *drv = nif->nif_driver;
175
176#ifdef NETIF_DEBUG
177 if (netif_debug)
178 printf("%s%d: netif_attach\n", drv->netif_bname, nif->nif_unit);
179#endif
180 desc->io_netif = nif;
181#ifdef PARANOID
182 if (drv->netif_init == NULL)
183 panic("%s%d: no netif_init support\n", drv->netif_bname,
184 nif->nif_unit);
185#endif
186 drv->netif_init(desc, machdep_hint);
187 bzero(drv->netif_ifs[nif->nif_unit].dif_stats,
188 sizeof(struct netif_stats));
189}
190
191void
ff2aef30 192netif_detach(struct netif *nif)
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193{
194 struct netif_driver *drv = nif->nif_driver;
195
196#ifdef NETIF_DEBUG
197 if (netif_debug)
198 printf("%s%d: netif_detach\n", drv->netif_bname, nif->nif_unit);
199#endif
200#ifdef PARANOID
201 if (drv->netif_end == NULL)
202 panic("%s%d: no netif_end support\n", drv->netif_bname,
203 nif->nif_unit);
204#endif
205 drv->netif_end(nif);
206}
207
208ssize_t
ff2aef30 209netif_get(struct iodesc *desc, void *pkt, size_t len, time_t timo)
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210{
211#ifdef NETIF_DEBUG
212 struct netif *nif = desc->io_netif;
213#endif
214 struct netif_driver *drv = desc->io_netif->nif_driver;
215 ssize_t rv;
216
217#ifdef NETIF_DEBUG
218 if (netif_debug)
219 printf("%s%d: netif_get\n", drv->netif_bname, nif->nif_unit);
220#endif
221#ifdef PARANOID
222 if (drv->netif_get == NULL)
223 panic("%s%d: no netif_get support\n", drv->netif_bname,
224 nif->nif_unit);
225#endif
226 rv = drv->netif_get(desc, pkt, len, timo);
227#ifdef NETIF_DEBUG
228 if (netif_debug)
229 printf("%s%d: netif_get returning %d\n", drv->netif_bname,
230 nif->nif_unit, (int)rv);
231#endif
232 return rv;
233}
234
235ssize_t
ff2aef30 236netif_put(struct iodesc *desc, void *pkt, size_t len)
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MD
237{
238#ifdef NETIF_DEBUG
239 struct netif *nif = desc->io_netif;
240#endif
241 struct netif_driver *drv = desc->io_netif->nif_driver;
242 ssize_t rv;
243
244#ifdef NETIF_DEBUG
245 if (netif_debug)
246 printf("%s%d: netif_put\n", drv->netif_bname, nif->nif_unit);
247#endif
248#ifdef PARANOID
249 if (drv->netif_put == NULL)
250 panic("%s%d: no netif_put support\n", drv->netif_bname,
251 nif->nif_unit);
252#endif
253 rv = drv->netif_put(desc, pkt, len);
254#ifdef NETIF_DEBUG
255 if (netif_debug)
256 printf("%s%d: netif_put returning %d\n", drv->netif_bname,
257 nif->nif_unit, (int)rv);
258#endif
259 return rv;
260}
261
262struct iodesc *
ff2aef30 263socktodesc(int sock)
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264{
265 if (sock >= SOPEN_MAX) {
266 errno = EBADF;
267 return (NULL);
268 }
269 return (&sockets[sock]);
270}
271
272int
ff2aef30 273netif_open(void *machdep_hint)
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274{
275 int fd;
660c873b 276 struct iodesc *s;
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277 struct netif *nif;
278
279 /* find a free socket */
280 for (fd = 0, s = sockets; fd < SOPEN_MAX; fd++, s++)
60233e58 281 if (s->io_netif == NULL)
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282 goto fnd;
283 errno = EMFILE;
284 return (-1);
285
286fnd:
287 bzero(s, sizeof(*s));
288 netif_init();
289 nif = netif_select(machdep_hint);
290 if (!nif)
291 panic("netboot: no interfaces left untried");
292 if (netif_probe(nif, machdep_hint)) {
293 printf("netboot: couldn't probe %s%d\n",
294 nif->nif_driver->netif_bname, nif->nif_unit);
295 errno = EINVAL;
296 return(-1);
297 }
298 netif_attach(nif, s, machdep_hint);
299
300 return(fd);
301}
302
303int
ff2aef30 304netif_close(int sock)
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305{
306 if (sock >= SOPEN_MAX) {
307 errno = EBADF;
308 return(-1);
309 }
310 netif_detach(sockets[sock].io_netif);
60233e58 311 sockets[sock].io_netif = NULL;
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312
313 return(0);
314}