Function esp_outb_sqh_process

dpdk/lib/ipsec/esp_outb.c:624–664

* process outbound packets for SA with ESN support, * for algorithms that require SQN.hibits to be implicitly included * into digest computation. * In that case we have to move ICV bytes back to their proper place. */

 * In that case we have to move ICV bytes back to their proper place.
 */
uint16_t
esp_outb_sqh_process(const struct rte_ipsec_session *ss, struct rte_mbuf *mb[],
	uint16_t num)
{
	uint32_t i, k, icv_len, *icv, bytes;
	struct rte_mbuf *ml;
	struct rte_ipsec_sa *sa;
	uint32_t dr[num];

	sa = ss->sa;

	k = 0;
	icv_len = sa->icv_len;
	bytes = 0;

	for (i = 0; i != num; i++) {
		if ((mb[i]->ol_flags & RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED) == 0) {
			ml = rte_pktmbuf_lastseg(mb[i]);
			/* remove high-order 32 bits of esn from packet len */
			mb[i]->pkt_len -= sa->sqh_len;
			ml->data_len -= sa->sqh_len;
			icv = rte_pktmbuf_mtod_offset(ml, void *,
				ml->data_len - icv_len);
			remove_sqh(icv, icv_len);
			bytes += mb[i]->pkt_len;
			k++;
		} else
			dr[i - k] = i;
	}
	sa->statistics.count += k;
	sa->statistics.bytes += bytes;

	/* handle unprocessed mbufs */
	if (k != num) {
		rte_errno = EBADMSG;
		if (k != 0)
			move_bad_mbufs(mb, dr, num, num - k);
	}

	return k;
}

/*
 * prepare packets for inline ipsec processing: