275 lines
6.3 KiB
C
275 lines
6.3 KiB
C
/* $NetBSD: netif.c,v 1.4 1994/10/26 06:43:14 cgd Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1993 Adam Glass
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Adam Glass.
|
|
* 4. The name of the Author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/cdefs.h>
|
|
#include <sys/mount.h>
|
|
#include <time.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
|
|
#include "salibc.h"
|
|
|
|
#include "netboot.h"
|
|
#include "netif.h"
|
|
|
|
/*
|
|
* netif_init:
|
|
*
|
|
* initialize the generic network interface layer
|
|
*/
|
|
|
|
void
|
|
netif_init()
|
|
{
|
|
struct netif_driver *drv;
|
|
int d, i;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("netif_init: called\n");
|
|
#endif
|
|
for (d = 0; d < n_netif_drivers; d++) {
|
|
drv = netif_drivers[d];
|
|
for (i = 0; i < drv->netif_nifs; i++)
|
|
drv->netif_ifs[i].dif_used = 0;
|
|
}
|
|
}
|
|
|
|
int
|
|
netif_match(nif, machdep_hint)
|
|
struct netif *nif;
|
|
void *machdep_hint;
|
|
{
|
|
struct netif_driver *drv = nif->nif_driver;
|
|
|
|
#ifdef DEBUG
|
|
#ifdef notdef
|
|
if (netif_debug)
|
|
printf("%s%d: netif_match (%d)\n", drv->netif_bname,
|
|
nif->nif_unit, nif->nif_sel);
|
|
#endif
|
|
#endif
|
|
return drv->netif_match(nif, machdep_hint);
|
|
}
|
|
|
|
struct netif *
|
|
netif_select(machdep_hint)
|
|
void *machdep_hint;
|
|
{
|
|
int d, u, unit_done, s;
|
|
struct netif_driver *drv;
|
|
struct netif cur_if;
|
|
static struct netif best_if;
|
|
int best_val;
|
|
int val;
|
|
|
|
best_val = 0;
|
|
best_if.nif_driver = NULL;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("netif_select: %d interfaces\n", n_netif_drivers);
|
|
#endif
|
|
|
|
for (d = 0; d < n_netif_drivers; d++) {
|
|
cur_if.nif_driver = netif_drivers[d];
|
|
drv = cur_if.nif_driver;
|
|
|
|
for (u = 0; u < drv->netif_nifs; u++) {
|
|
cur_if.nif_unit = u;
|
|
unit_done = 0;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("\t%s%d:", drv->netif_bname,
|
|
cur_if.nif_unit);
|
|
#endif
|
|
|
|
for (s = 0; s < drv->netif_ifs[u].dif_nsel; s++) {
|
|
cur_if.nif_sel = s;
|
|
|
|
if (drv->netif_ifs[u].dif_used & (1 << s)) {
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf(" [%d used]", s);
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
val = netif_match(&cur_if, machdep_hint);
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf(" [%d -> %d]", s, val);
|
|
#endif
|
|
if (val > best_val) {
|
|
best_val = val;
|
|
best_if = cur_if;
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (best_if.nif_driver == NULL)
|
|
return NULL;
|
|
|
|
best_if.nif_driver->
|
|
netif_ifs[best_if.nif_unit].dif_used |= (1 << best_if.nif_sel);
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("netif_select: %s%d(%d) wins\n",
|
|
best_if.nif_driver->netif_bname,
|
|
best_if.nif_unit, best_if.nif_sel);
|
|
#endif
|
|
return &best_if;
|
|
}
|
|
|
|
int
|
|
netif_probe(nif, machdep_hint)
|
|
struct netif *nif;
|
|
void *machdep_hint;
|
|
{
|
|
struct netif_driver *drv = nif->nif_driver;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_probe\n", drv->netif_bname, nif->nif_unit);
|
|
#endif
|
|
return drv->netif_probe(nif, machdep_hint);
|
|
}
|
|
|
|
void
|
|
netif_attach(nif, desc, machdep_hint)
|
|
struct netif *nif;
|
|
struct iodesc *desc;
|
|
void *machdep_hint;
|
|
{
|
|
struct netif_driver *drv = nif->nif_driver;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_attach\n", drv->netif_bname, nif->nif_unit);
|
|
#endif
|
|
desc->io_netif = nif;
|
|
#ifdef DIAGNOSTIC
|
|
if (drv->netif_init == NULL)
|
|
panic("%s%d: no netif_init support\n", drv->netif_bname,
|
|
nif->nif_unit);
|
|
#endif
|
|
drv->netif_init(desc, machdep_hint);
|
|
bzero(drv->netif_ifs[nif->nif_unit].dif_stats,
|
|
sizeof(struct netif_stats));
|
|
}
|
|
|
|
void
|
|
netif_detach(nif)
|
|
struct netif *nif;
|
|
{
|
|
struct netif_driver *drv = nif->nif_driver;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_detach\n", drv->netif_bname, nif->nif_unit);
|
|
#endif
|
|
#ifdef DIAGNOSTIC
|
|
if (drv->netif_end == NULL)
|
|
panic("%s%d: no netif_end support\n", drv->netif_bname,
|
|
nif->nif_unit);
|
|
#endif
|
|
drv->netif_end(nif);
|
|
}
|
|
|
|
int
|
|
netif_get(desc, pkt, len, timo)
|
|
struct iodesc *desc;
|
|
void *pkt;
|
|
int len;
|
|
time_t timo;
|
|
{
|
|
struct netif *nif = desc->io_netif;
|
|
struct netif_driver *drv = desc->io_netif->nif_driver;
|
|
int rv;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_get\n", drv->netif_bname, nif->nif_unit);
|
|
#endif
|
|
#ifdef DIAGNOSTIC
|
|
if (drv->netif_get == NULL)
|
|
panic("%s%d: no netif_get support\n", drv->netif_bname,
|
|
nif->nif_unit);
|
|
#endif
|
|
rv = drv->netif_get(desc, pkt, len, timo);
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_get returning %d\n", drv->netif_bname,
|
|
nif->nif_unit, rv);
|
|
#endif
|
|
return rv;
|
|
}
|
|
|
|
int
|
|
netif_put(desc, pkt, len)
|
|
struct iodesc *desc;
|
|
void *pkt;
|
|
int len;
|
|
{
|
|
struct netif *nif = desc->io_netif;
|
|
struct netif_driver *drv = desc->io_netif->nif_driver;
|
|
int rv;
|
|
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_put\n", drv->netif_bname, nif->nif_unit);
|
|
#endif
|
|
#ifdef DIAGNOSTIC
|
|
if (drv->netif_put == NULL)
|
|
panic("%s%d: no netif_put support\n", drv->netif_bname,
|
|
nif->nif_unit);
|
|
#endif
|
|
rv = drv->netif_put(desc, pkt, len);
|
|
#ifdef DEBUG
|
|
if (netif_debug)
|
|
printf("%s%d: netif_put returning %d\n", drv->netif_bname,
|
|
nif->nif_unit, rv);
|
|
#endif
|
|
return rv;
|
|
}
|