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dev_net.c revision 1.2 
      1 /* $NetBSD: dev_net.c,v 1.2 2003/08/09 11:37:57 igy Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2003 Naoto Shimazaki.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     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  *
     16  * THIS SOFTWARE IS PROVIDED BY NAOTO SHIMAZAKI AND CONTRIBUTORS ``AS IS''
     17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     18  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE NAOTO OR CONTRIBUTORS BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     26  * THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: dev_net.c,v 1.2 2003/08/09 11:37:57 igy Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/types.h>
     33 #include <netinet/in.h>
     34 
     35 #include <lib/libsa/stand.h>
     36 #include <lib/libsa/bootp.h>
     37 #include <lib/libkern/libkern.h>
     38 #include <machine/stdarg.h>
     39 
     40 #include "extern.h"
     41 
     42 extern struct in_addr	servip;
     43 
     44 static int	netdev_sock = -1;
     45 
     46 int
     47 net_strategy(void *devdata, int rw, daddr_t blk,
     48 	     size_t size, void *buf , size_t *rsize)
     49 {
     50 	return EIO;
     51 }
     52 
     53 int
     54 net_open(struct open_file *f, ...)
     55 {
     56 	char		*fname;
     57 	char		**file;
     58 	struct iodesc	*s;
     59 	va_list		ap;
     60 
     61 	va_start(ap, f);
     62 	fname = va_arg(ap, char *);
     63 	file = va_arg(ap, char **);
     64 	va_end(ap);
     65 
     66 	f->f_devdata = &netdev_sock;
     67 	netdev_sock = netif_open(NULL);
     68 
     69 	bootfile[0] = '\0';
     70 	if (bootopts.b_flags & B_F_USE_BOOTP) {
     71 		s = socktodesc(netdev_sock);
     72 		bootp(netdev_sock);
     73 		if (fname[0] != '\0')
     74 			strlcpy(bootfile, fname, sizeof bootfile);
     75 	} else {
     76 		s = socktodesc(netdev_sock);
     77 
     78 		servip = s->destip = bootopts.b_remote_ip;
     79 		myip = s->myip = bootopts.b_local_ip;
     80 		netmask = bootopts.b_netmask;
     81 		gateip = bootopts.b_gate_ip;
     82 
     83 		if (fname[0] == '\0') {
     84 			printf("no boot filename\n");
     85 			netif_close(netdev_sock);
     86 			return EIO;
     87 		}
     88 		strlcpy(bootfile, fname, sizeof bootfile);
     89 	}
     90 
     91 	*file = bootfile;
     92 
     93 	return 0;
     94 }
     95 
     96 int
     97 net_close(struct open_file *f)
     98 {
     99 	int	sock;
    100 
    101 	sock = *((int *) f->f_devdata);
    102 	netif_close(sock);
    103 	f->f_devdata = NULL;
    104 	return 0;
    105 }
    106 
    107 int
    108 net_ioctl(struct open_file *f, u_long cmd, void *data)
    109 {
    110 	return EIO;
    111 }
    112