131 lines
2.5 KiB
C
131 lines
2.5 KiB
C
/*
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* (C)opyright October 1992 Darren Reed. (from tcplog)
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*
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* This software may be freely distributed as long as it is not altered
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* in any way and that this messagge always accompanies it.
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*
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* The author of this software makes no garuntee about the
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* performance of this package or its suitability to fulfill any purpose.
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*
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*/
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#include <stdio.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/timeb.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/stropts.h>
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#include <sys/pfmod.h>
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#include <sys/bufmod.h>
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#include <sys/dlpi.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcpip.h>
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#include "ip_compat.h"
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#if !defined(lint) && defined(LIBC_SCCS)
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static char snitid[] = "@(#)sdlpi.c 1.3 10/30/95 (C)1995 Darren Reed";
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#endif
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#define CHUNKSIZE 8192
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#define BUFSPACE (4*CHUNKSIZE)
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/*
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* Be careful to only include those defined in the flags option for the
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* interface are included in the header size.
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*/
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int initdevice(device, sport, tout)
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char *device;
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int sport, tout;
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{
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char devname[16], *s, buf[256];
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int i, fd;
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(void) sprintf(devname, "/dev/%s", device);
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s = devname + 5;
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while (*s && !isdigit(*s))
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s++;
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if (!*s)
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{
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fprintf(stderr, "bad device name %s\n", devname);
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exit(-1);
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}
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i = atoi(s);
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*s = '\0';
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/*
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* For writing
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*/
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if ((fd = open(devname, O_RDWR)) < 0)
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{
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fprintf(stderr, "O_RDWR(1) ");
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perror(devname);
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exit(-1);
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}
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if (dlattachreq(fd, i) == -1 || dlokack(fd, buf) == -1)
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{
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fprintf(stderr, "DLPI error\n");
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exit(-1);
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}
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dlbindreq(fd, ETHERTYPE_IP, 0, DL_CLDLS, 0, 0);
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dlbindack(fd, buf);
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/*
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* write full headers
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*/
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if (strioctl(fd, DLIOCRAW, -1, 0, NULL) == -1)
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{
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fprintf(stderr, "DLIOCRAW error\n");
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exit(-1);
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}
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return fd;
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}
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/*
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* output an IP packet onto a fd opened for /dev/nit
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*/
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int sendip(fd, pkt, len)
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int fd, len;
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char *pkt;
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{
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struct strbuf dbuf, *dp = &dbuf;
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/*
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* construct NIT STREAMS messages, first control then data.
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*/
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dp->buf = pkt;
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dp->len = len;
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dp->maxlen = dp->len;
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if (putmsg(fd, NULL, dp, 0) == -1)
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{
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perror("putmsg");
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return -1;
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}
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if (ioctl(fd, I_FLUSH, FLUSHW) == -1)
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{
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perror("I_FLUSHW");
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return -1;
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}
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return len;
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}
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