Function test_bpf_match

dpdk/app/test/test_bpf.c:3291–3330

}

static int
test_bpf_match(pcap_t *pcap, const char *str,
	       struct rte_mbuf *mb)
{
	struct bpf_program fcode;
	struct rte_bpf_prm *prm = NULL;
	struct rte_bpf *bpf = NULL;
	int ret = -1;
	uint64_t rc;

	if (pcap_compile(pcap, &fcode, str, 1, PCAP_NETMASK_UNKNOWN)) {
		printf("%s@%d: pcap_compile(\"%s\") failed: %s;\n",
		       __func__, __LINE__,  str, pcap_geterr(pcap));
		return -1;
	}

	prm = rte_bpf_convert(&fcode);
	if (prm == NULL) {
		printf("%s@%d: bpf_convert('%s') failed,, error=%d(%s);\n",
		       __func__, __LINE__, str, rte_errno, strerror(rte_errno));
		goto error;
	}

	bpf = rte_bpf_load(prm);
	if (bpf == NULL) {
		printf("%s@%d: failed to load bpf code, error=%d(%s);\n",
			__func__, __LINE__, rte_errno, strerror(rte_errno));
		goto error;
	}

	rc = rte_bpf_exec(bpf, mb);
	/* The return code from bpf capture filter is non-zero if matched */
	ret = (rc == 0);
error:
	if (bpf)
		rte_bpf_destroy(bpf);
	rte_free(prm);
	pcap_freecode(&fcode);
	return ret;
}

/* Basic sanity test can we match a IP packet */
static int