diff options
Diffstat (limited to 'target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-enet.c')
| -rw-r--r-- | target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-enet.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-enet.c b/target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-enet.c deleted file mode 100644 index 3f4189b494..0000000000 --- a/target/linux/etrax-2.6/image/e100boot/src/libpcap-0.4/pcap-enet.c +++ /dev/null @@ -1,227 +0,0 @@ -/* - * Stanford Enetfilter subroutines for tcpdump - * - * Based on the MERIT NNstat etherifrt.c and the Ultrix pcap-pf.c - * subroutines. - * - * Rayan Zachariassen, CA*Net - */ - -#include <sys/types.h> -#include <sys/time.h> -#include <sys/file.h> -#include <sys/ioctl.h> -#include <sys/socket.h> - -#include <net/if.h> -#include <net/bpf.h> -#include <net/enet.h> - -#include <netinet/in.h> -#include <netinet/if_ether.h> - -#include <stdio.h> -#include <errno.h> - -#include "interface.h" - -struct packet_header { -#ifdef IBMRTPC - struct LengthWords length; - struct tap_header tap; -#endif /* IBMRTPC */ - u_char packet[8] -}; - -extern int errno; - -#define BUFSPACE (4*1024) - -/* Forwards */ -static void efReadError(int, char *); - -void -readloop(int cnt, int if_fd, struct bpf_program *fp, printfunc printit) -{ -#ifdef IBMRTPC - register struct packet_header *ph; - register u_char *bp; - register int inc; -#else /* !IBMRTPC */ - static struct timeval tv = { 0 }; -#endif /* IBMRTPC */ - register int cc, caplen; - register struct bpf_insn *fcode = fp->bf_insns; - union { - struct packet_header hdr; - u_char p[BUFSPACE]; - u_short s; - } buf; - - while (1) { - if ((cc = read(if_fd, (char *)buf.p, sizeof(buf))) < 0) - efReadError(if_fd, "reader"); - -#ifdef IBMRTPC - /* - * Loop through each packet. - */ - bp = buf.p; - while (cc > 0) { - ph = (struct packet_header *)bp; - caplen = ph->tap.th_wirelen > snaplen ? snaplen : ph->tap -.th_wirelen ; - if (bpf_filter(fcode, (char *)ph->packet, - ph->tap.th_wirelen, caplen)) { - if (cnt >= 0 && --cnt < 0) - goto out; - (*printit)((char *)ph->packet, - (struct timeval *)ph->tap.th_timestamp, - ph->tap.th_wirelen, caplen); - } - inc = ph->length.PacketOffset; - cc -= inc; - bp += inc; - } -#else /* !IBMRTPC */ - caplen = cc > snaplen ? snaplen : cc ; - if (bpf_filter(fcode, buf.hdr.packet, cc, caplen)) { - if (cnt >= 0 && --cnt < 0) - goto out; - (*printit)(buf.hdr.packet, &tv, cc, caplen); - } -#endif /* IBMRTPC */ - } - out: - wrapup(if_fd); -} - -/* Call ONLY if read() has returned an error on packet filter */ -static void -efReadError(int fid, char *msg) -{ - if (errno == EINVAL) { /* read MAXINT bytes already! */ - if (lseek(fid, 0, 0) < 0) { - perror("tcpdump: efReadError/lseek"); - exit(-1); - } - else - return; - } - else { - (void) fprintf(stderr, "tcpdump: "); - perror(msg); - exit(-1); - } -} - -void -wrapup(int fd) -{ -#ifdef IBMRTPC - struct enstats es; - - if (ioctl(fd, EIOSTATS, &es) == -1) { - perror("tcpdump: enet ioctl EIOSTATS error"); - exit(-1); - } - - fprintf(stderr, "%d packets queued", es.enStat_Rcnt); - if (es.enStat_Rdrops > 0) - fprintf(stderr, ", %d dropped", es.enStat_Rdrops); - if (es.enStat_Reads > 0) - fprintf(stderr, ", %d tcpdump %s", es.enStat_Reads, - es.enStat_Reads > 1 ? "reads" : "read"); - if (es.enStat_MaxRead > 1) - fprintf(stderr, ", %d packets in largest read", - es.enStat_MaxRead); - putc('\n', stderr); -#endif /* IBMRTPC */ - close(fd); -} - -int -initdevice(char *device, int pflag, int *linktype) -{ - struct eniocb ctl; - struct enfilter filter; - u_int maxwaiting; - int if_fd; - -#ifdef IBMRTPC - GETENETDEVICE(0, O_RDONLY, &if_fd); -#else /* !IBMRTPC */ - if_fd = open("/dev/enet", O_RDONLY, 0); -#endif /* IBMRTPC */ - - if (if_fd == -1) { - perror("tcpdump: enet open error"); - error( -"your system may not be properly configured; see \"man enet(4)\""); - exit(-1); - } - - /* Get operating parameters. */ - - if (ioctl(if_fd, EIOCGETP, (char *)&ctl) == -1) { - perror("tcpdump: enet ioctl EIOCGETP error"); - exit(-1); - } - - /* Set operating parameters. */ - -#ifdef IBMRTPC - ctl.en_rtout = 1 * ctl.en_hz; - ctl.en_tr_etherhead = 1; - ctl.en_tap_network = 1; - ctl.en_multi_packet = 1; - ctl.en_maxlen = BUFSPACE; -#else /* !IBMRTPC */ - ctl.en_rtout = 64; /* randomly picked value for HZ */ -#endif /* IBMRTPC */ - if (ioctl(if_fd, EIOCSETP, &ctl) == -1) { - perror("tcpdump: enet ioctl EIOCSETP error"); - exit(-1); - } - - /* Flush the receive queue, since we've changed - the operating parameters and we otherwise might - receive data without headers. */ - - if (ioctl(if_fd, EIOCFLUSH) == -1) { - perror("tcpdump: enet ioctl EIOCFLUSH error"); - exit(-1); - } - - /* Set the receive queue depth to its maximum. */ - - maxwaiting = ctl.en_maxwaiting; - if (ioctl(if_fd, EIOCSETW, &maxwaiting) == -1) { - perror("tcpdump: enet ioctl EIOCSETW error"); - exit(-1); - } - -#ifdef IBMRTPC - /* Clear statistics. */ - - if (ioctl(if_fd, EIOCLRSTAT, 0) == -1) { - perror("tcpdump: enet ioctl EIOCLRSTAT error"); - exit(-1); - } -#endif /* IBMRTPC */ - - /* Set the filter (accept all packets). */ - - filter.enf_Priority = 3; - filter.enf_FilterLen = 0; - if (ioctl(if_fd, EIOCSETF, &filter) == -1) { - perror("tcpdump: enet ioctl EIOCSETF error"); - exit(-1); - } - /* - * "enetfilter" supports only ethernets. - */ - *linktype = DLT_EN10MB; - - return(if_fd); -} |