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port: support KNI

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add KNI port type to the packet framework

Signed-off-by: WeiJie Zhuang <zhuangwj@gmail.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
This commit is contained in:
WeiJie Zhuang 2016-06-21 18:55:52 +08:00 committed by Thomas Monjalon
parent cba50f6be0
commit 9fc37d1c07
5 changed files with 657 additions and 0 deletions
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1
doc/api/doxy-api-index.md
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@ -118,6 +118,7 @@ There are many libraries, so their headers may be grouped by topics:
[frag] (@ref rte_port_frag.h),
[reass] (@ref rte_port_ras.h),
[sched] (@ref rte_port_sched.h),
[kni] (@ref rte_port_kni.h),
[src/sink] (@ref rte_port_source_sink.h)
* [table] (@ref rte_table.h):
[lpm IPv4] (@ref rte_table_lpm.h),

7
lib/librte_port/Makefile
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@ -56,6 +56,9 @@ SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_frag.c
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_ras.c
endif
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_sched.c
ifeq ($(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
# install includes
@ -67,6 +70,9 @@ SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_frag.h
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_ras.h
endif
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_sched.h
ifeq ($(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
# this lib depends upon:
@ -76,5 +82,6 @@ DEPDIRS-$(CONFIG_RTE_LIBRTE_PORT) += lib/librte_mempool
DEPDIRS-$(CONFIG_RTE_LIBRTE_PORT) += lib/librte_ether
DEPDIRS-$(CONFIG_RTE_LIBRTE_PORT) += lib/librte_ip_frag
DEPDIRS-$(CONFIG_RTE_LIBRTE_PORT) += lib/librte_sched
DEPDIRS-$(CONFIG_RTE_LIBRTE_PORT) += lib/librte_kni
include $(RTE_SDK)/mk/rte.lib.mk

545
lib/librte_port/rte_port_kni.c Normal file
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@ -0,0 +1,545 @@
/*-
* BSD LICENSE
*
* Copyright(c) 2016 Ethan Zhuang <zhuangwj@gmail.com>.
* Copyright(c) 2016 Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_kni.h>
#include "rte_port_kni.h"
/*
* Port KNI Reader
*/
#ifdef RTE_PORT_STATS_COLLECT
#define RTE_PORT_KNI_READER_STATS_PKTS_IN_ADD(port, val) \
port->stats.n_pkts_in += val
#define RTE_PORT_KNI_READER_STATS_PKTS_DROP_ADD(port, val) \
port->stats.n_pkts_drop += val
#else
#define RTE_PORT_KNI_READER_STATS_PKTS_IN_ADD(port, val)
#define RTE_PORT_KNI_READER_STATS_PKTS_DROP_ADD(port, val)
#endif
struct rte_port_kni_reader {
struct rte_port_in_stats stats;
struct rte_kni *kni;
};
static void *
rte_port_kni_reader_create(void *params, int socket_id)
{
struct rte_port_kni_reader_params *conf =
(struct rte_port_kni_reader_params *) params;
struct rte_port_kni_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->kni = conf->kni;
return port;
}
static int
rte_port_kni_reader_rx(void *port, struct rte_mbuf **pkts, uint32_t n_pkts)
{
struct rte_port_kni_reader *p =
(struct rte_port_kni_reader *) port;
uint16_t rx_pkt_cnt;
rx_pkt_cnt = rte_kni_rx_burst(p->kni, pkts, n_pkts);
RTE_PORT_KNI_READER_STATS_PKTS_IN_ADD(p, rx_pkt_cnt);
return rx_pkt_cnt;
}
static int
rte_port_kni_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_kni_reader_stats_read(void *port,
struct rte_port_in_stats *stats, int clear)
{
struct rte_port_kni_reader *p =
(struct rte_port_kni_reader *) port;
if (stats != NULL)
memcpy(stats, &p->stats, sizeof(p->stats));
if (clear)
memset(&p->stats, 0, sizeof(p->stats));
return 0;
}
/*
* Port KNI Writer
*/
#ifdef RTE_PORT_STATS_COLLECT
#define RTE_PORT_KNI_WRITER_STATS_PKTS_IN_ADD(port, val) \
port->stats.n_pkts_in += val
#define RTE_PORT_KNI_WRITER_STATS_PKTS_DROP_ADD(port, val) \
port->stats.n_pkts_drop += val
#else
#define RTE_PORT_KNI_WRITER_STATS_PKTS_IN_ADD(port, val)
#define RTE_PORT_KNI_WRITER_STATS_PKTS_DROP_ADD(port, val)
#endif
struct rte_port_kni_writer {
struct rte_port_out_stats stats;
struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
uint32_t tx_burst_sz;
uint32_t tx_buf_count;
uint64_t bsz_mask;
struct rte_kni *kni;
};
static void *
rte_port_kni_writer_create(void *params, int socket_id)
{
struct rte_port_kni_writer_params *conf =
(struct rte_port_kni_writer_params *) params;
struct rte_port_kni_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->kni = conf->kni;
port->tx_burst_sz = conf->tx_burst_sz;
port->tx_buf_count = 0;
port->bsz_mask = 1LLU << (conf->tx_burst_sz - 1);
return port;
}
static inline void
send_burst(struct rte_port_kni_writer *p)
{
uint32_t nb_tx;
nb_tx = rte_kni_tx_burst(p->kni, p->tx_buf, p->tx_buf_count);
RTE_PORT_KNI_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]);
p->tx_buf_count = 0;
}
static int
rte_port_kni_writer_tx(void *port, struct rte_mbuf *pkt)
{
struct rte_port_kni_writer *p =
(struct rte_port_kni_writer *) port;
p->tx_buf[p->tx_buf_count++] = pkt;
RTE_PORT_KNI_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_kni_writer_tx_bulk(void *port,
struct rte_mbuf **pkts,
uint64_t pkts_mask)
{
struct rte_port_kni_writer *p =
(struct rte_port_kni_writer *) 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 n_pkts_ok;
if (tx_buf_count)
send_burst(p);
RTE_PORT_KNI_WRITER_STATS_PKTS_IN_ADD(p, n_pkts);
n_pkts_ok = rte_kni_tx_burst(p->kni, pkts, n_pkts);
RTE_PORT_KNI_WRITER_STATS_PKTS_DROP_ADD(p, n_pkts - n_pkts_ok);
for (; n_pkts_ok < n_pkts; n_pkts_ok++) {
struct rte_mbuf *pkt = pkts[n_pkts_ok];
rte_pktmbuf_free(pkt);
}
} 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++] = pkt;
RTE_PORT_KNI_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_kni_writer_flush(void *port)
{
struct rte_port_kni_writer *p =
(struct rte_port_kni_writer *) port;
if (p->tx_buf_count > 0)
send_burst(p);
return 0;
}
static int
rte_port_kni_writer_free(void *port)
{
if (port == NULL) {
RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
return -EINVAL;
}
rte_port_kni_writer_flush(port);
rte_free(port);
return 0;
}
static int rte_port_kni_writer_stats_read(void *port,
struct rte_port_out_stats *stats, int clear)
{
struct rte_port_kni_writer *p =
(struct rte_port_kni_writer *) port;
if (stats != NULL)
memcpy(stats, &p->stats, sizeof(p->stats));
if (clear)
memset(&p->stats, 0, sizeof(p->stats));
return 0;
}
/*
* Port KNI Writer Nodrop
*/
#ifdef RTE_PORT_STATS_COLLECT
#define RTE_PORT_KNI_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val) \
port->stats.n_pkts_in += val
#define RTE_PORT_KNI_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val) \
port->stats.n_pkts_drop += val
#else
#define RTE_PORT_KNI_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val)
#define RTE_PORT_KNI_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val)
#endif
struct rte_port_kni_writer_nodrop {
struct rte_port_out_stats stats;
struct rte_mbuf *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;
struct rte_kni *kni;
};
static void *
rte_port_kni_writer_nodrop_create(void *params, int socket_id)
{
struct rte_port_kni_writer_nodrop_params *conf =
(struct rte_port_kni_writer_nodrop_params *) params;
struct rte_port_kni_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->kni = conf->kni;
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_kni_writer_nodrop *p)
{
uint32_t nb_tx = 0, i;
nb_tx = rte_kni_tx_burst(p->kni, 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_kni_tx_burst(p->kni,
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_KNI_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]);
p->tx_buf_count = 0;
}
static int
rte_port_kni_writer_nodrop_tx(void *port, struct rte_mbuf *pkt)
{
struct rte_port_kni_writer_nodrop *p =
(struct rte_port_kni_writer_nodrop *) port;
p->tx_buf[p->tx_buf_count++] = pkt;
RTE_PORT_KNI_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_kni_writer_nodrop_tx_bulk(void *port,
struct rte_mbuf **pkts,
uint64_t pkts_mask)
{
struct rte_port_kni_writer_nodrop *p =
(struct rte_port_kni_writer_nodrop *) 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 n_pkts_ok;
if (tx_buf_count)
send_burst_nodrop(p);
RTE_PORT_KNI_WRITER_NODROP_STATS_PKTS_IN_ADD(p, n_pkts);
n_pkts_ok = rte_kni_tx_burst(p->kni, pkts, n_pkts);
if (n_pkts_ok >= n_pkts)
return 0;
/*
* If we didn't manage to send all packets in single burst, move
* remaining packets to the buffer and call send burst.
*/
for (; n_pkts_ok < n_pkts; n_pkts_ok++) {
struct rte_mbuf *pkt = pkts[n_pkts_ok];
p->tx_buf[p->tx_buf_count++] = pkt;
}
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++] = pkt;
RTE_PORT_KNI_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_kni_writer_nodrop_flush(void *port)
{
struct rte_port_kni_writer_nodrop *p =
(struct rte_port_kni_writer_nodrop *) port;
if (p->tx_buf_count > 0)
send_burst_nodrop(p);
return 0;
}
static int
rte_port_kni_writer_nodrop_free(void *port)
{
if (port == NULL) {
RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
return -EINVAL;
}
rte_port_kni_writer_nodrop_flush(port);
rte_free(port);
return 0;
}
static int rte_port_kni_writer_nodrop_stats_read(void *port,
struct rte_port_out_stats *stats, int clear)
{
struct rte_port_kni_writer_nodrop *p =
(struct rte_port_kni_writer_nodrop *) 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_kni_reader_ops = {
.f_create = rte_port_kni_reader_create,
.f_free = rte_port_kni_reader_free,
.f_rx = rte_port_kni_reader_rx,
.f_stats = rte_port_kni_reader_stats_read,
};
struct rte_port_out_ops rte_port_kni_writer_ops = {
.f_create = rte_port_kni_writer_create,
.f_free = rte_port_kni_writer_free,
.f_tx = rte_port_kni_writer_tx,
.f_tx_bulk = rte_port_kni_writer_tx_bulk,
.f_flush = rte_port_kni_writer_flush,
.f_stats = rte_port_kni_writer_stats_read,
};
struct rte_port_out_ops rte_port_kni_writer_nodrop_ops = {
.f_create = rte_port_kni_writer_nodrop_create,
.f_free = rte_port_kni_writer_nodrop_free,
.f_tx = rte_port_kni_writer_nodrop_tx,
.f_tx_bulk = rte_port_kni_writer_nodrop_tx_bulk,
.f_flush = rte_port_kni_writer_nodrop_flush,
.f_stats = rte_port_kni_writer_nodrop_stats_read,
};

95
lib/librte_port/rte_port_kni.h Normal file
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@ -0,0 +1,95 @@
/*-
* BSD LICENSE
*
* Copyright(c) 2016 Ethan Zhuang <zhuangwj@gmail.com>.
* Copyright(c) 2016 Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __INCLUDE_RTE_PORT_KNI_H__
#define __INCLUDE_RTE_PORT_KNI_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file
* RTE Port KNI Interface
*
* kni_reader: input port built on top of pre-initialized KNI interface
* kni_writer: output port built on top of pre-initialized KNI interface
*
***/
#include <stdint.h>
#include <rte_kni.h>
#include "rte_port.h"
/** kni_reader port parameters */
struct rte_port_kni_reader_params {
/** KNI interface reference */
struct rte_kni *kni;
};
/** kni_reader port operations */
extern struct rte_port_in_ops rte_port_kni_reader_ops;
/** kni_writer port parameters */
struct rte_port_kni_writer_params {
/** KNI interface reference */
struct rte_kni *kni;
/** Burst size to KNI interface. */
uint32_t tx_burst_sz;
};
/** kni_writer port operations */
extern struct rte_port_out_ops rte_port_kni_writer_ops;
/** kni_writer_nodrop port parameters */
struct rte_port_kni_writer_nodrop_params {
/** KNI interface reference */
struct rte_kni *kni;
/** Burst size to KNI interface. */
uint32_t tx_burst_sz;
/** Maximum number of retries, 0 for no limit */
uint32_t n_retries;
};
/** kni_writer_nodrop port operations */
extern struct rte_port_out_ops rte_port_kni_writer_nodrop_ops;
#ifdef __cplusplus
}
#endif
#endif

9
lib/librte_port/rte_port_version.map
View File

@ -35,3 +35,12 @@ DPDK_2.2 {
rte_port_ring_multi_writer_nodrop_ops;
} DPDK_2.1;
DPDK_16.07 {
global:
rte_port_kni_reader_ops;
rte_port_kni_writer_ops;
rte_port_kni_writer_nodrop_ops;
} DPDK_2.2;