ethdump.c File Reference

#include <stdio.h>
#include <errno.h>
#include <syscall.h>
#include <sys/nic.h>
#include <net/ethernet.h>

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Functions
void	dumpPacket ()
void	readPacket (NIC *nic)
int	main (int argc, const char *argv[])

Variables
static int	nicNo = 1
static char	buf [4096]
static MBuf	mbuf

Function Documentation

dumpPacket()

void dumpPacket

(

)

Definition at line 14 of file ethdump.c.

{
    struct ether_header *hdr = (struct ether_header *)&buf;
    char srcMac[18];
    char dstMac[18];
 
    sprintf(srcMac, "%02x:%02x:%02x:%02x:%02x:%02x",
            hdr->ether_shost[0], hdr->ether_shost[1], hdr->ether_shost[2],
            hdr->ether_shost[3], hdr->ether_shost[4], hdr->ether_shost[5]);
    sprintf(dstMac, "%02x:%02x:%02x:%02x:%02x:%02x",
            hdr->ether_dhost[0], hdr->ether_dhost[1], hdr->ether_dhost[2],
            hdr->ether_dhost[3], hdr->ether_dhost[4], hdr->ether_dhost[5]);
 
    printf("From %s to %s of type %04x\n", srcMac, dstMac, hdr->ether_type);
}

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main()

int main	(	int	argc,
		const char *	argv[]
	)

Definition at line 57 of file ethdump.c.

{
    uint64_t status;
    NIC nic;
 
    printf("Ethernet Dump Tool\n");
 
    status = OSNICStat(nicNo, &nic);
    if (status == ENOENT) {
        printf("nic%d not present\n", nicNo);
        return 1;
    }
 
    printf("Listening to nic%d\n", (int)nic.nicNo);
 
    while (1) {
        readPacket(&nic);
    }
}

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readPacket()

void readPacket

(

NIC *

nic

)

Definition at line 31 of file ethdump.c.

{
    uint64_t status;
 
    mbuf.vaddr = (uint64_t)&buf;
    mbuf.maddr = 0;
    mbuf.len = 4096;
    mbuf.type = MBUF_TYPE_NULL;
    mbuf.flags = 0;
    mbuf.status = MBUF_STATUS_NULL;
 
    status = OSNICRecv(nicNo, &mbuf);
    if (status != 0) {
        printf("OSNICRecv failed!\n");
        return;
    }
 
    if (mbuf.status == MBUF_STATUS_FAILED) {
        printf("Failed to read packet!\n");
        return;
    }
 
    dumpPacket();
}

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Variable Documentation

buf

char buf[4096]

static

Definition at line 10 of file ethdump.c.

mbuf

MBuf mbuf

static

Definition at line 11 of file ethdump.c.

nicNo

int nicNo = 1

static

Definition at line 9 of file ethdump.c.