Function valid_pcapng_file

dpdk/app/test/test_pcapng.c:290–322

* Open the resulting pcapng file with libpcap * Would be better to use capinfos from wireshark * but that creates an unwanted dependency. */

 * but that creates an unwanted dependency.
 */
static int
valid_pcapng_file(const char *file_name, uint64_t started, unsigned int expected)
{
	char errbuf[PCAP_ERRBUF_SIZE];
	struct pkt_print_ctx ctx = { };
	int ret;

	ctx.start_ns = started;
	ctx.end_ns = current_timestamp();

	ctx.pcap = pcap_open_offline_with_tstamp_precision(file_name,
							   PCAP_TSTAMP_PRECISION_NANO,
							   errbuf);
	if (ctx.pcap == NULL) {
		fprintf(stderr, "pcap_open_offline('%s') failed: %s\n",
			file_name, errbuf);
		return -1;
	}

	ret = pcap_loop(ctx.pcap, 0, parse_pcap_packet, (u_char *)&ctx);
	if (ret != 0) {
		fprintf(stderr, "pcap_dispatch: failed: %s\n",
			pcap_geterr(ctx.pcap));
	} else if (ctx.count != expected) {
		printf("Only %u packets, expected %u\n",
		       ctx.count, expected);
		ret = -1;
	}

	pcap_close(ctx.pcap);

	return ret;
}

static int
test_add_interface(void)