Function inline_outb_tun_pkt_process

dpdk/lib/ipsec/esp_outb.c:719–781

* process group of ESP outbound tunnel packets destined for * INLINE_CRYPTO type of device. */

 * INLINE_CRYPTO type of device.
 */
uint16_t
inline_outb_tun_pkt_process(const struct rte_ipsec_session *ss,
	struct rte_mbuf *mb[], uint16_t num)
{
	int32_t rc;
	uint32_t i, k, nb_segs_total, n_sqn;
	uint64_t sqn;
	rte_be64_t sqc;
	struct rte_ipsec_sa *sa;
	union sym_op_data icv;
	uint64_t iv[IPSEC_MAX_IV_QWORD];
	uint32_t dr[num];
	uint16_t nb_segs[num];

	sa = ss->sa;
	nb_segs_total = 0;
	/* Calculate number of segments */
	for (i = 0; i != num; i++) {
		nb_segs[i] = esn_outb_nb_segments(mb[i]);
		nb_segs_total += nb_segs[i];
	}

	n_sqn = nb_segs_total;
	sqn = esn_outb_update_sqn(sa, &n_sqn);
	if (n_sqn != nb_segs_total) {
		rte_errno = EOVERFLOW;
		/* if there are segmented packets find out how many can be
		 * sent until overflow occurs
		 */
		if (nb_segs_total > num) /* there is at least 1 */
			num = esn_outb_nb_valid_packets(num, n_sqn, nb_segs);
		else
			num = n_sqn; /* no segmented packets */
	}

	k = 0;
	for (i = 0; i != num; i++) {

		sqc = rte_cpu_to_be_64(sqn);
		gen_iv(iv, sqc);
		sqn += nb_segs[i];

		/* try to update the packet itself */
		rc = outb_tun_pkt_prepare(sa, sqc, iv, mb[i], &icv, 0,
			(mb[i]->ol_flags &
			(RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG)) != 0);

		k += (rc >= 0);

		/* failure, put packet into the death-row */
		if (rc < 0) {
			dr[i - k] = i;
			rte_errno = -rc;
		}
	}

	/* copy not processed mbufs beyond good ones */
	if (k != num && k != 0)