[PATCH] port: add sym crypto port

["Zhang, Roy Fan" <roy.fan.zhang@intel.com>]

This patch adds the symmetric crypto support to port library.
The crypto port acts as a shim layer to DPDK cryptodev library and
supports in-place crypto workload processing.

Change-Id: I8e9c87bdaaa252b39873596cbfaa2de2324e765c
Signed-off-by: Zhang, Roy Fan <roy.fan.zhang@intel.com>
---
 lib/librte_port/Makefile              |   2 +
 lib/librte_port/rte_port_sym_crypto.c | 552 ++++++++++++++++++++++++++++++++++
 lib/librte_port/rte_port_sym_crypto.h |  93 ++++++
 3 files changed, 647 insertions(+)
 create mode 100644 lib/librte_port/rte_port_sym_crypto.c
 create mode 100644 lib/librte_port/rte_port_sym_crypto.h

diff --git a/lib/librte_port/Makefile b/lib/librte_port/Makefile
index 8df4864ed..30113f790 100644
--- a/lib/librte_port/Makefile
+++ b/lib/librte_port/Makefile
@@ -38,6 +38,7 @@ ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
 SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_kni.c
 endif
 SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_source_sink.c
+SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_sym_crypto.c
 
 # install includes
 SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port.h
@@ -53,5 +54,6 @@ ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
 SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_kni.h
 endif
 SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_source_sink.h
+SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_sym_crypto.h
 
 include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/lib/librte_port/rte_port_sym_crypto.c b/lib/librte_port/rte_port_sym_crypto.c
new file mode 100644
index 000000000..1cd242e22
--- /dev/null
+++ b/lib/librte_port/rte_port_sym_crypto.c
@@ -0,0 +1,552 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+#include <string.h>
+
+#include <rte_common.h>
+#include <rte_malloc.h>
+
+#include "rte_port_sym_crypto.h"
+
+/*
+ * Port Crypto Reader
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_SYM_CRYPTO_READER_STATS_PKTS_IN_ADD(port, val) \
+	port->stats.n_pkts_in += val
+#define RTE_PORT_SYM_CRYPTO_READER_STATS_PKTS_DROP_ADD(port, val) \
+	port->stats.n_pkts_drop += val
+
+#else
+
+#define RTE_PORT_SYM_CRYPTO_READER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_SYM_CRYPTO_READER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_sym_crypto_reader {
+	struct rte_port_in_stats stats;
+
+	uint8_t cryptodev_id;
+	uint16_t queue_id;
+	struct rte_crypto_op *ops[RTE_PORT_IN_BURST_SIZE_MAX];
+	rte_port_sym_crypto_reader_callback_fn f_callback;
+	void *arg_callback;
+};
+
+static void *
+rte_port_sym_crypto_reader_create(void *params, int socket_id)
+{
+	struct rte_port_sym_crypto_reader_params *conf =
+			params;
+	struct rte_port_sym_crypto_reader *port;
+
+	/* Check input parameters */
+	if (conf == NULL) {
+		RTE_LOG(ERR, PORT, "%s: params is NULL\n", __func__);
+		return NULL;
+	}
+
+	/* Memory allocation */
+	port = rte_zmalloc_socket("PORT", sizeof(*port),
+		RTE_CACHE_LINE_SIZE, socket_id);
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
+		return NULL;
+	}
+
+	/* Initialization */
+	port->cryptodev_id = conf->cryptodev_id;
+	port->queue_id = conf->queue_id;
+	port->f_callback = conf->f_callback;
+	port->arg_callback = conf->arg_callback;
+
+	return port;
+}
+
+static int
+rte_port_sym_crypto_reader_rx(void *port, struct rte_mbuf **pkts, uint32_t n_pkts)
+{
+	struct rte_port_sym_crypto_reader *p =
+			port;
+	uint16_t rx_ops_cnt, i, n = 0;
+
+	rx_ops_cnt = rte_cryptodev_dequeue_burst(p->cryptodev_id, p->queue_id,
+			p->ops, n_pkts);
+
+	for (i = 0; i < rx_ops_cnt; i++) {
+		struct rte_crypto_op *op = p->ops[i];
+
+		/** Drop failed pkts */
+		if (unlikely(op->status != RTE_CRYPTO_OP_STATUS_SUCCESS)) {
+			rte_pktmbuf_free(op->sym->m_src);
+			continue;
+		}
+
+		pkts[n++] = op->sym->m_src;
+	}
+
+	if (p->f_callback)
+		(*p->f_callback)(pkts, n, p->arg_callback);
+
+	RTE_PORT_SYM_CRYPTO_READER_STATS_PKTS_IN_ADD(p, n);
+	RTE_PORT_SYM_CRYPTO_READER_STATS_PKTS_DROP_ADD(p, rx_pkt_cnt - n);
+
+	return n;
+}
+
+static int
+rte_port_sym_crypto_reader_free(void *port)
+{
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: port is NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	rte_free(port);
+
+	return 0;
+}
+
+static int rte_port_sym_crypto_reader_stats_read(void *port,
+	struct rte_port_in_stats *stats, int clear)
+{
+	struct rte_port_sym_crypto_reader *p =
+			port;
+
+	if (stats != NULL)
+		memcpy(stats, &p->stats, sizeof(p->stats));
+
+	if (clear)
+		memset(&p->stats, 0, sizeof(p->stats));
+
+	return 0;
+}
+
+/*
+ * Port crypto Writer
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_IN_ADD(port, val) \
+	port->stats.n_pkts_in += val
+#define RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_DROP_ADD(port, val) \
+	port->stats.n_pkts_drop += val
+
+#else
+
+#define RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_sym_crypto_writer {
+	struct rte_port_out_stats stats;
+
+	struct rte_crypto_op *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
+
+	uint32_t tx_burst_sz;
+	uint32_t tx_buf_count;
+	uint64_t bsz_mask;
+
+	uint8_t cryptodev_id;
+	uint16_t queue_id;
+	uint16_t crypto_op_offset;
+};
+
+static void *
+rte_port_sym_crypto_writer_create(void *params, int socket_id)
+{
+	struct rte_port_sym_crypto_writer_params *conf =
+			params;
+	struct rte_port_sym_crypto_writer *port;
+
+	/* Check input parameters */
+	if ((conf == NULL) ||
+		(conf->tx_burst_sz == 0) ||
+		(conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX) ||
+		(!rte_is_power_of_2(conf->tx_burst_sz))) {
+		RTE_LOG(ERR, PORT, "%s: Invalid input parameters\n", __func__);
+		return NULL;
+	}
+
+	/* Memory allocation */
+	port = rte_zmalloc_socket("PORT", sizeof(*port),
+		RTE_CACHE_LINE_SIZE, socket_id);
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
+		return NULL;
+	}
+
+	/* Initialization */
+	port->tx_burst_sz = conf->tx_burst_sz;
+	port->tx_buf_count = 0;
+	port->bsz_mask = 1LLU << (conf->tx_burst_sz - 1);
+
+	port->cryptodev_id = conf->cryptodev_id;
+	port->queue_id = conf->queue_id;
+	port->crypto_op_offset = conf->crypto_op_offset;
+
+	return port;
+}
+
+static inline void
+send_burst(struct rte_port_sym_crypto_writer *p)
+{
+	uint32_t nb_tx;
+
+	nb_tx = rte_cryptodev_enqueue_burst(p->cryptodev_id, p->queue_id,
+			p->tx_buf, p->tx_buf_count);
+
+	RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_DROP_ADD(p, p->tx_buf_count -
+			nb_tx);
+	for (; nb_tx < p->tx_buf_count; nb_tx++)
+		rte_pktmbuf_free(p->tx_buf[nb_tx]->sym->m_src);
+
+	p->tx_buf_count = 0;
+}
+
+static int
+rte_port_sym_crypto_writer_tx(void *port, struct rte_mbuf *pkt)
+{
+	struct rte_port_sym_crypto_writer *p =
+			port;
+
+	p->tx_buf[p->tx_buf_count++] = (struct rte_crypto_op *)
+			RTE_MBUF_METADATA_UINT8_PTR(pkt, p->crypto_op_offset);
+	RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_IN_ADD(p, 1);
+	if (p->tx_buf_count >= p->tx_burst_sz)
+		send_burst(p);
+
+	return 0;
+}
+
+static int
+rte_port_sym_crypto_writer_tx_bulk(void *port,
+	struct rte_mbuf **pkts,
+	uint64_t pkts_mask)
+{
+	struct rte_port_sym_crypto_writer *p =
+			port;
+	uint64_t bsz_mask = p->bsz_mask;
+	uint32_t tx_buf_count = p->tx_buf_count;
+	uint64_t expr = (pkts_mask & (pkts_mask + 1)) |
+					((pkts_mask & bsz_mask) ^ bsz_mask);
+
+	if (expr == 0) {
+		uint64_t n_pkts = __builtin_popcountll(pkts_mask);
+		uint32_t i;
+
+		RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_IN_ADD(p, n_pkts);
+
+		for (i = 0; i < n_pkts; i++)
+			p->tx_buf[p->tx_buf_count++] = (struct rte_crypto_op *)
+					RTE_MBUF_METADATA_UINT8_PTR(pkts[i],
+							p->crypto_op_offset);
+
+		if (p->tx_buf_count >= p->tx_burst_sz)
+			send_burst(p);
+	} else {
+		for (; pkts_mask;) {
+			uint32_t pkt_index = __builtin_ctzll(pkts_mask);
+			uint64_t pkt_mask = 1LLU << pkt_index;
+			struct rte_mbuf *pkt = pkts[pkt_index];
+
+			p->tx_buf[tx_buf_count++] = (struct rte_crypto_op *)
+					RTE_MBUF_METADATA_UINT8_PTR(pkt,
+							p->crypto_op_offset);
+
+			RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_IN_ADD(p, 1);
+			pkts_mask &= ~pkt_mask;
+		}
+
+		p->tx_buf_count = tx_buf_count;
+		if (tx_buf_count >= p->tx_burst_sz)
+			send_burst(p);
+	}
+
+	return 0;
+}
+
+static int
+rte_port_sym_crypto_writer_flush(void *port)
+{
+	struct rte_port_sym_crypto_writer *p =
+			port;
+
+	if (p->tx_buf_count > 0)
+		send_burst(p);
+
+	return 0;
+}
+
+static int
+rte_port_sym_crypto_writer_free(void *port)
+{
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	rte_port_sym_crypto_writer_flush(port);
+	rte_free(port);
+
+	return 0;
+}
+
+static int rte_port_sym_crypto_writer_stats_read(void *port,
+	struct rte_port_out_stats *stats, int clear)
+{
+	struct rte_port_sym_crypto_writer *p =
+			port;
+
+	if (stats != NULL)
+		memcpy(stats, &p->stats, sizeof(p->stats));
+
+	if (clear)
+		memset(&p->stats, 0, sizeof(p->stats));
+
+	return 0;
+}
+
+/*
+ * Port crypto Writer Nodrop
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val) \
+	port->stats.n_pkts_in += val
+#define RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val) \
+	port->stats.n_pkts_drop += val
+
+#else
+
+#define RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_sym_crypto_writer_nodrop {
+	struct rte_port_out_stats stats;
+
+	struct rte_crypto_op *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
+	uint32_t tx_burst_sz;
+	uint32_t tx_buf_count;
+	uint64_t bsz_mask;
+	uint64_t n_retries;
+
+	uint8_t cryptodev_id;
+	uint16_t queue_id;
+	uint16_t crypto_op_offset;
+};
+
+static void *
+rte_port_sym_crypto_writer_nodrop_create(void *params, int socket_id)
+{
+	struct rte_port_sym_crypto_writer_nodrop_params *conf =
+		params;
+	struct rte_port_sym_crypto_writer_nodrop *port;
+
+	/* Check input parameters */
+	if ((conf == NULL) ||
+		(conf->tx_burst_sz == 0) ||
+		(conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX) ||
+		(!rte_is_power_of_2(conf->tx_burst_sz))) {
+		RTE_LOG(ERR, PORT, "%s: Invalid input parameters\n", __func__);
+		return NULL;
+	}
+
+	/* Memory allocation */
+	port = rte_zmalloc_socket("PORT", sizeof(*port),
+		RTE_CACHE_LINE_SIZE, socket_id);
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
+		return NULL;
+	}
+
+	/* Initialization */
+	port->cryptodev_id = conf->cryptodev_id;
+	port->queue_id = conf->queue_id;
+	port->crypto_op_offset = conf->crypto_op_offset;
+	port->tx_burst_sz = conf->tx_burst_sz;
+	port->tx_buf_count = 0;
+	port->bsz_mask = 1LLU << (conf->tx_burst_sz - 1);
+
+	/*
+	 * When n_retries is 0 it means that we should wait for every packet to
+	 * send no matter how many retries should it take. To limit number of
+	 * branches in fast path, we use UINT64_MAX instead of branching.
+	 */
+	port->n_retries = (conf->n_retries == 0) ? UINT64_MAX : conf->n_retries;
+
+	return port;
+}
+
+static inline void
+send_burst_nodrop(struct rte_port_sym_crypto_writer_nodrop *p)
+{
+	uint32_t nb_tx = 0, i;
+
+	nb_tx = rte_cryptodev_enqueue_burst(p->cryptodev_id, p->queue_id,
+			p->tx_buf, p->tx_buf_count);
+
+	/* We sent all the packets in a first try */
+	if (nb_tx >= p->tx_buf_count) {
+		p->tx_buf_count = 0;
+		return;
+	}
+
+	for (i = 0; i < p->n_retries; i++) {
+		nb_tx += rte_cryptodev_enqueue_burst(p->cryptodev_id,
+				p->queue_id, p->tx_buf + nb_tx,
+				p->tx_buf_count - nb_tx);
+
+		/* We sent all the packets in more than one try */
+		if (nb_tx >= p->tx_buf_count) {
+			p->tx_buf_count = 0;
+			return;
+		}
+	}
+
+	/* We didn't send the packets in maximum allowed attempts */
+	RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_DROP_ADD(p,
+			p->tx_buf_count - nb_tx);
+	for ( ; nb_tx < p->tx_buf_count; nb_tx++)
+		rte_pktmbuf_free(p->tx_buf[nb_tx]->sym->m_src);
+
+	p->tx_buf_count = 0;
+}
+
+static int
+rte_port_sym_crypto_writer_nodrop_tx(void *port, struct rte_mbuf *pkt)
+{
+	struct rte_port_sym_crypto_writer_nodrop *p =
+			port;
+
+	p->tx_buf[p->tx_buf_count++] = (struct rte_crypto_op *)
+			RTE_MBUF_METADATA_UINT8_PTR(pkt, p->crypto_op_offset);
+	RTE_PORT_SYM_CRYPTO_WRITER_STATS_PKTS_IN_ADD(p, 1);
+	if (p->tx_buf_count >= p->tx_burst_sz)
+		send_burst_nodrop(p);
+
+	return 0;
+}
+
+static int
+rte_port_sym_crypto_writer_nodrop_tx_bulk(void *port,
+	struct rte_mbuf **pkts,
+	uint64_t pkts_mask)
+{
+	struct rte_port_sym_crypto_writer_nodrop *p =
+			port;
+
+	uint64_t bsz_mask = p->bsz_mask;
+	uint32_t tx_buf_count = p->tx_buf_count;
+	uint64_t expr = (pkts_mask & (pkts_mask + 1)) |
+					((pkts_mask & bsz_mask) ^ bsz_mask);
+
+	if (expr == 0) {
+		uint64_t n_pkts = __builtin_popcountll(pkts_mask);
+		uint32_t i;
+
+		RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_IN_ADD(p, n_pkts);
+
+		for (i = 0; i < n_pkts; i++)
+			p->tx_buf[p->tx_buf_count++] = (struct rte_crypto_op *)
+					RTE_MBUF_METADATA_UINT8_PTR(pkts[i],
+							p->crypto_op_offset);
+
+		if (p->tx_buf_count >= p->tx_burst_sz)
+			send_burst_nodrop(p);
+	} else {
+		for ( ; pkts_mask; ) {
+			uint32_t pkt_index = __builtin_ctzll(pkts_mask);
+			uint64_t pkt_mask = 1LLU << pkt_index;
+			struct rte_mbuf *pkt = pkts[pkt_index];
+
+			p->tx_buf[tx_buf_count++] = (struct rte_crypto_op *)
+					RTE_MBUF_METADATA_UINT8_PTR(pkt,
+							p->crypto_op_offset);
+			RTE_PORT_SYM_CRYPTO_WRITER_NODROP_STATS_PKTS_IN_ADD(p,
+					1);
+			pkts_mask &= ~pkt_mask;
+		}
+
+		p->tx_buf_count = tx_buf_count;
+		if (tx_buf_count >= p->tx_burst_sz)
+			send_burst_nodrop(p);
+	}
+
+	return 0;
+}
+
+static int
+rte_port_sym_crypto_writer_nodrop_flush(void *port)
+{
+	struct rte_port_sym_crypto_writer_nodrop *p =
+		port;
+
+	if (p->tx_buf_count > 0)
+		send_burst_nodrop(p);
+
+	return 0;
+}
+
+static int
+rte_port_sym_crypto_writer_nodrop_free(void *port)
+{
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	rte_port_sym_crypto_writer_nodrop_flush(port);
+	rte_free(port);
+
+	return 0;
+}
+
+static int rte_port_sym_crypto_writer_nodrop_stats_read(void *port,
+	struct rte_port_out_stats *stats, int clear)
+{
+	struct rte_port_sym_crypto_writer_nodrop *p =
+			port;
+
+	if (stats != NULL)
+		memcpy(stats, &p->stats, sizeof(p->stats));
+
+	if (clear)
+		memset(&p->stats, 0, sizeof(p->stats));
+
+	return 0;
+}
+
+
+/*
+ * Summary of port operations
+ */
+struct rte_port_in_ops rte_port_sym_crypto_reader_ops = {
+	.f_create = rte_port_sym_crypto_reader_create,
+	.f_free = rte_port_sym_crypto_reader_free,
+	.f_rx = rte_port_sym_crypto_reader_rx,
+	.f_stats = rte_port_sym_crypto_reader_stats_read,
+};
+
+struct rte_port_out_ops rte_port_sym_crypto_writer_ops = {
+	.f_create = rte_port_sym_crypto_writer_create,
+	.f_free = rte_port_sym_crypto_writer_free,
+	.f_tx = rte_port_sym_crypto_writer_tx,
+	.f_tx_bulk = rte_port_sym_crypto_writer_tx_bulk,
+	.f_flush = rte_port_sym_crypto_writer_flush,
+	.f_stats = rte_port_sym_crypto_writer_stats_read,
+};
+
+struct rte_port_out_ops rte_port_sym_crypto_writer_nodrop_ops = {
+	.f_create = rte_port_sym_crypto_writer_nodrop_create,
+	.f_free = rte_port_sym_crypto_writer_nodrop_free,
+	.f_tx = rte_port_sym_crypto_writer_nodrop_tx,
+	.f_tx_bulk = rte_port_sym_crypto_writer_nodrop_tx_bulk,
+	.f_flush = rte_port_sym_crypto_writer_nodrop_flush,
+	.f_stats = rte_port_sym_crypto_writer_nodrop_stats_read,
+};
diff --git a/lib/librte_port/rte_port_sym_crypto.h b/lib/librte_port/rte_port_sym_crypto.h
new file mode 100644
index 000000000..db66f1540
--- /dev/null
+++ b/lib/librte_port/rte_port_sym_crypto.h
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef __INCLUDE_RTE_PORT_SYM_CRYPTO_H__
+#define __INCLUDE_RTE_PORT_SYM_CRYPTO_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @file
+ * RTE Port sym crypto Interface
+ *
+ * crypto_reader: input port built on top of pre-initialized crypto interface
+ * crypto_writer: output port built on top of pre-initialized crypto interface
+ *
+ ***/
+
+#include <stdint.h>
+
+#include <rte_cryptodev.h>
+
+#include "rte_port.h"
+
+/** Function prototype for reader post action. */
+typedef void (*rte_port_sym_crypto_reader_callback_fn)(struct rte_mbuf **pkts,
+		uint16_t n_pkts, void *arg);
+
+/** Crypto_reader port parameters */
+struct rte_port_sym_crypto_reader_params {
+	/** Target cryptodev ID. */
+	uint8_t cryptodev_id;
+
+	/** Target cryptodev Queue Pair ID. */
+	uint16_t queue_id;
+
+	/** Crypto reader post callback function. */
+	rte_port_sym_crypto_reader_callback_fn f_callback;
+
+	/** Crypto reader post callback function arguments. */
+	void *arg_callback;
+};
+
+/** Crypto_reader port operations. */
+extern struct rte_port_in_ops rte_port_sym_crypto_reader_ops;
+
+
+/** Crypto_writer port parameters. */
+struct rte_port_sym_crypto_writer_params {
+	/** Target cryptodev ID. */
+	uint8_t cryptodev_id;
+
+	/** Target cryptodev Queue Pair ID. */
+	uint16_t queue_id;
+
+	/** offset to rte_crypto_op in the mbufs. */
+	uint16_t crypto_op_offset;
+
+	/** Burst size to crypto interface. */
+	uint32_t tx_burst_sz;
+};
+
+/** Crypto_writer port operations. */
+extern struct rte_port_out_ops rte_port_sym_crypto_writer_ops;
+
+/** Crypto_writer_nodrop port parameters. */
+struct rte_port_sym_crypto_writer_nodrop_params {
+	/** Target cryptodev ID. */
+	uint8_t cryptodev_id;
+
+	/** Target cryptodev queue pair id. */
+	uint16_t queue_id;
+
+	/** Offset to rte_crypto_op in the mbufs. */
+	uint16_t crypto_op_offset;
+
+	/** Burst size to crypto interface. */
+	uint32_t tx_burst_sz;
+
+	/** Maximum number of retries, 0 for no limit. */
+	uint32_t n_retries;
+};
+
+/** Crypto_writer_nodrop port operations. */
+extern struct rte_port_out_ops rte_port_sym_crypto_writer_nodrop_ops;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
-- 
2.13.6