Function parse_pcap_packet

dpdk/app/test/test_pcapng.c:227–274

Callback from pcap_loop used to validate packets in the file */

/* Callback from pcap_loop used to validate packets in the file */
static void
parse_pcap_packet(u_char *user, const struct pcap_pkthdr *h,
		  const u_char *bytes)
{
	struct pkt_print_ctx *ctx = (struct pkt_print_ctx *)user;
	const struct rte_ether_hdr *eh;
	const struct rte_ipv4_hdr *ip;
	uint64_t ns;

	eh = (const struct rte_ether_hdr *)bytes;
	ip = (const struct rte_ipv4_hdr *)(eh + 1);

	ctx->count += 1;

	/* The pcap library is misleading in reporting timestamp.
	 * packet header struct gives timestamp as a timeval (ie. usec);
	 * but the file is open in nanonsecond mode therefore
	 * the timestamp is really in timespec (ie. nanoseconds).
	 */
	ns = h->ts.tv_sec * NS_PER_S + h->ts.tv_usec;
	if (ns < ctx->start_ns || ns > ctx->end_ns) {
		char tstart[128], tend[128];

		fmt_time(tstart, sizeof(tstart), ctx->start_ns);
		fmt_time(tend, sizeof(tend), ctx->end_ns);
		fprintf(stderr, "Timestamp out of range [%s .. %s]\n",
			tstart, tend);
		goto error;
	}

	if (!rte_is_broadcast_ether_addr(&eh->dst_addr)) {
		fprintf(stderr, "Destination is not broadcast\n");
		goto error;
	}

	if (rte_ipv4_cksum(ip) != 0) {
		fprintf(stderr, "Bad IPv4 checksum\n");
		goto error;
	}

	return;		/* packet is normal */

error:
	print_packet(ns, eh, h->len);

	/* Stop parsing at first error */
	pcap_breakloop(ctx->pcap);
}

static uint64_t
current_timestamp(void)