166 lines
3.7 KiB
C
166 lines
3.7 KiB
C
/* $NetBSD: netif_small.c,v 1.12 2009/10/21 23:12:09 snj Exp $ */
|
|
|
|
/* minimal netif - for boot ROMs we don't have to select between
|
|
several interfaces, and we have to save space
|
|
|
|
hacked from netbsd:sys/arch/mvme68k/stand/libsa/netif.c
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#ifdef _STANDALONE
|
|
#include <lib/libkern/libkern.h>
|
|
#else
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_ether.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
|
|
#include <lib/libsa/stand.h>
|
|
#include <lib/libsa/net.h>
|
|
|
|
#include "netif_small.h"
|
|
#include "etherdrv.h"
|
|
|
|
#ifdef NETIF_DEBUG
|
|
int netif_debug = 1;
|
|
#endif
|
|
|
|
/* we allow for one socket only */
|
|
static struct iodesc iosocket;
|
|
|
|
struct iodesc *
|
|
socktodesc(int sock)
|
|
{
|
|
if (sock != 0) {
|
|
return NULL;
|
|
}
|
|
return &iosocket;
|
|
}
|
|
|
|
int
|
|
netif_open(void)
|
|
{
|
|
struct iodesc *io;
|
|
|
|
io = &iosocket;
|
|
if (io->io_netif) {
|
|
#ifdef NETIF_DEBUG
|
|
printf("netif_open: device busy\n");
|
|
#endif
|
|
return -1;
|
|
}
|
|
memset(io, 0, sizeof(*io));
|
|
|
|
if (!EtherInit(io->myea)) {
|
|
printf("EtherInit failed\n");
|
|
return -1;
|
|
}
|
|
|
|
io->io_netif = (void*)1; /* mark busy */
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
netif_close(int fd)
|
|
{
|
|
struct iodesc *io;
|
|
|
|
if (fd != 0) {
|
|
return;
|
|
}
|
|
|
|
io = &iosocket;
|
|
if (io->io_netif) {
|
|
EtherStop();
|
|
io->io_netif = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Send a packet. The ether header is already there.
|
|
* Return the length sent (or -1 on error).
|
|
*/
|
|
int
|
|
netif_put(struct iodesc *desc, void *pkt, size_t len)
|
|
{
|
|
#ifdef NETIF_DEBUG
|
|
if (netif_debug) {
|
|
struct ether_header *eh;
|
|
|
|
printf("netif_put: desc=%p pkt=%p 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
|
|
return EtherSend(pkt, len);
|
|
}
|
|
|
|
/*
|
|
* Receive a packet, including the ether header.
|
|
* Return the total length received (or -1 on error).
|
|
*/
|
|
int
|
|
netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo)
|
|
{
|
|
int len;
|
|
satime_t t;
|
|
|
|
#ifdef NETIF_DEBUG
|
|
if (netif_debug)
|
|
printf("netif_get: pkt=%p, maxlen=%d, tmo=%d\n",
|
|
pkt, maxlen, timo);
|
|
#endif
|
|
|
|
t = getsecs();
|
|
len = 0;
|
|
while (((getsecs() - t) < timo) && !len) {
|
|
len = EtherReceive(pkt, maxlen);
|
|
}
|
|
|
|
#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;
|
|
}
|