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/* $NetBSD: netif_sun.c,v 1.2 1995/09/18 21:31:48 pk Exp $ */
/*
* Copyright (c) 1995 Gordon W. Ross
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* 4. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Gordon W. Ross
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* The Sun PROM has a fairly general set of network drivers,
* so it is easiest to just replace the netif module with
* this adaptation to the PROM network interface.
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <string.h>
#include <time.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include "stand.h"
#include "net.h"
#include "netif.h"
#include "promdev.h"
static struct netif netif_prom;
#ifdef NETIF_DEBUG
int netif_debug;
#endif
struct iodesc sockets[SOPEN_MAX];
struct iodesc *
socktodesc(sock)
int sock;
{
if (sock != 0) {
return(NULL);
}
return (sockets);
}
int
netif_open(machdep_hint)
void *machdep_hint;
{
struct promdata *pd = machdep_hint;
struct iodesc *io;
int fd, error;
/* find a free socket */
io = sockets;
if (io->io_netif) {
#ifdef DEBUG
printf("netif_open: device busy\n");
#endif
errno = ENFILE;
return (-1);
}
bzero(io, sizeof(*io));
netif_prom.nif_devdata = pd;
io->io_netif = &netif_prom;
/* Put our ethernet address in io->myea */
prom_getether(pd->fd, io->myea);
return(0);
}
int
netif_close(fd)
int fd;
{
struct iodesc *io;
struct netif *ni;
if (fd != 0) {
errno = EBADF;
return(-1);
}
io = &sockets[fd];
ni = io->io_netif;
if (ni != NULL) {
ni->nif_devdata = NULL;
io->io_netif = NULL;
}
return(0);
}
/*
* Send a packet. The ether header is already there.
* Return the length sent (or -1 on error).
*/
ssize_t
netif_put(desc, pkt, len)
struct iodesc *desc;
void *pkt;
size_t len;
{
struct promdata *pd;
ssize_t rv;
size_t sendlen;
pd = (struct promdata *)desc->io_netif->nif_devdata;
#ifdef NETIF_DEBUG
if (netif_debug) {
struct ether_header *eh;
printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
desc, pkt, len);
eh = pkt;
printf("dst: %s ", ether_sprintf(eh->ether_dhost));
printf("src: %s ", ether_sprintf(eh->ether_shost));
printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
}
#endif
sendlen = len;
if (sendlen < 60) {
sendlen = 60;
#ifdef NETIF_DEBUG
printf("netif_put: length padded to %d\n", sendlen);
#endif
}
rv = (*pd->xmit)(pd, pkt, sendlen);
#ifdef NETIF_DEBUG
if (netif_debug)
printf("netif_put: xmit returned %d\n", rv);
#endif
return rv;
}
/*
* Receive a packet, including the ether header.
* Return the total length received (or -1 on error).
*/
ssize_t
netif_get(desc, pkt, maxlen, timo)
struct iodesc *desc;
void *pkt;
size_t maxlen;
time_t timo;
{
struct promdata *pd;
int tick0, tmo_ticks;
ssize_t len;
pd = (struct promdata *)desc->io_netif->nif_devdata;
#ifdef NETIF_DEBUG
if (netif_debug)
printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
pkt, maxlen, timo);
#endif
tmo_ticks = timo * hz;
tick0 = getticks();
do {
len = (*pd->recv)(pd, pkt, maxlen);
} while ((len == 0) && ((getticks() - tick0) < tmo_ticks));
#ifdef NETIF_DEBUG
if (netif_debug)
printf("netif_get: received len=%d\n", len);
#endif
if (len < 12)
return -1;
#ifdef NETIF_DEBUG
if (netif_debug) {
struct ether_header *eh = pkt;
printf("dst: %s ", ether_sprintf(eh->ether_dhost));
printf("src: %s ", ether_sprintf(eh->ether_shost));
printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
}
#endif
return len;
}
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