diff mbox

[dpdk-dev,v3,3/3] app: Used default RX/TX configuration got from dev info in apps

Message ID 1412156945-6549-4-git-send-email-pablo.de.lara.guarch@intel.com (mailing list archive)
State Accepted, archived
Headers

Commit Message

De Lara Guarch, Pablo Oct. 1, 2014, 9:49 a.m. UTC 
  For apps that were using default rte_eth_rxconf and rte_eth_txconf
structures, these have been removed and now they are obtained by
calling rte_eth_dev_info_get, just before setting up RX/TX queues.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 examples/dpdk_qat/main.c                           |   44 ++------------
 examples/exception_path/main.c                     |   30 +---------
 examples/ip_fragmentation/main.c                   |   47 +++------------
 examples/ip_reassembly/main.c                      |   50 +++-------------
 examples/ipv4_multicast/main.c                     |   48 +++------------
 examples/kni/main.c                                |   34 +----------
 examples/l2fwd-ivshmem/host/host.c                 |   43 +------------
 examples/l2fwd/main.c                              |   48 +--------------
 examples/l3fwd-acl/main.c                          |   50 +++-------------
 examples/l3fwd-power/main.c                        |   51 +++-------------
 examples/l3fwd-vf/main.c                           |   36 +++--------
 examples/l3fwd/main.c                              |   58 ++++---------------
 examples/link_status_interrupt/main.c              |   43 +------------
 examples/load_balancer/init.c                      |   24 +-------
 .../client_server_mp/mp_server/init.c              |   41 +------------
 examples/multi_process/l2fwd_fork/main.c           |   44 +-------------
 examples/multi_process/symmetric_mp/main.c         |   36 +----------
 examples/netmap_compat/bridge/bridge.c             |   25 --------
 examples/netmap_compat/lib/compat_netmap.c         |    6 +-
 examples/netmap_compat/lib/compat_netmap.h         |    2 -
 examples/qos_meter/main.c                          |   36 ++++--------
 examples/quota_watermark/qw/init.c                 |   26 ++-------
 examples/vhost_xen/main.c                          |   34 ++---------
 examples/vmdq/main.c                               |   62 +++-----------------
 examples/vmdq_dcb/main.c                           |   36 +----------
 25 files changed, 141 insertions(+), 813 deletions(-)

Comments

Thomas Monjalon Oct. 10, 2014, 11:20 a.m. UTC | #1 
2014-10-01 10:49, Pablo de Lara:
> For apps that were using default rte_eth_rxconf and rte_eth_txconf
> structures, these have been removed and now they are obtained by
> calling rte_eth_dev_info_get, just before setting up RX/TX queues.

If my understanding is correct, you are cleaning only examples whose
you are sure we want default values or you know which parameter to tune.
Right?

I'd like to see another patch for testpmd and other tests/examples whose
default values would be OK.

Thanks
De Lara Guarch, Pablo Oct. 10, 2014, 12:07 p.m. UTC | #2 
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Thomas Monjalon
> Sent: Friday, October 10, 2014 12:21 PM
> To: De Lara Guarch, Pablo
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3 3/3] app: Used default RX/TX
> configuration got from dev info in apps
> 
> 2014-10-01 10:49, Pablo de Lara:
> > For apps that were using default rte_eth_rxconf and rte_eth_txconf
> > structures, these have been removed and now they are obtained by
> > calling rte_eth_dev_info_get, just before setting up RX/TX queues.
> 
> If my understanding is correct, you are cleaning only examples whose
> you are sure we want default values or you know which parameter to tune.
> Right?
> 
> I'd like to see another patch for testpmd and other tests/examples whose
> default values would be OK.

That's correct. I have only changed those sample apps that use default values 
or have very minor changes that I am aware of.

Thanks,
Pablo
> 
> Thanks
> --
> Thomas
diff mbox

Patch

diff --git a/examples/dpdk_qat/main.c b/examples/dpdk_qat/main.c
index d61db4c..69b8e6a 100644
--- a/examples/dpdk_qat/main.c
+++ b/examples/dpdk_qat/main.c
@@ -75,25 +75,6 @@ 
 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
 #define NB_MBUF   (32 * 1024)
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -178,24 +159,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 static struct rte_mempool * pktmbuf_pool[RTE_MAX_NUMA_NODES];
 
 struct lcore_conf {
@@ -785,7 +748,8 @@  MAIN(int argc, char **argv)
 			printf("txq=%u,%d,%d ", lcoreid, queueid, socketid);
 			fflush(stdout);
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-						     socketid, &tx_conf);
+					socketid,
+					NULL);
 			if (ret < 0)
 				rte_panic("rte_eth_tx_queue_setup: err=%d, "
 					"port=%d\n", ret, portid);
@@ -810,7 +774,9 @@  MAIN(int argc, char **argv)
 			fflush(stdout);
 
 			ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
-				        socketid, &rx_conf, pktmbuf_pool[socketid]);
+					socketid,
+					NULL,
+					pktmbuf_pool[socketid]);
 			if (ret < 0)
 				rte_panic("rte_eth_rx_queue_setup: err=%d,"
 						"port=%d\n", ret, portid);
diff --git a/examples/exception_path/main.c b/examples/exception_path/main.c
index 0204116..8f89dc6 100644
--- a/examples/exception_path/main.c
+++ b/examples/exception_path/main.c
@@ -109,31 +109,6 @@ 
  * controller's datasheet and supporting DPDK documentation for guidance
  * on how these parameters should be set.
  */
-/* RX ring configuration */
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = 8,   /* Ring prefetch threshold */
-		.hthresh = 8,   /* Ring host threshold */
-		.wthresh = 4,   /* Ring writeback threshold */
-	},
-	.rx_free_thresh = 0,    /* Immediately free RX descriptors */
-};
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-/* TX ring configuration */
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = 36,  /* Ring prefetch threshold */
-		.hthresh = 0,   /* Ring host threshold */
-		.wthresh = 0,   /* Ring writeback threshold */
-	},
-	.tx_free_thresh = 0,    /* Use PMD default values */
-	.tx_rs_thresh = 0,      /* Use PMD default values */
-};
 
 /* Options for configuring ethernet port */
 static const struct rte_eth_conf port_conf = {
@@ -460,13 +435,14 @@  init_port(uint8_t port)
 		            (unsigned)port, ret);
 
 	ret = rte_eth_rx_queue_setup(port, 0, NB_RXD, rte_eth_dev_socket_id(port),
-                                 &rx_conf, pktmbuf_pool);
+				NULL,
+				pktmbuf_pool);
 	if (ret < 0)
 		FATAL_ERROR("Could not setup up RX queue for port%u (%d)",
 		            (unsigned)port, ret);
 
 	ret = rte_eth_tx_queue_setup(port, 0, NB_TXD, rte_eth_dev_socket_id(port),
-                                 &tx_conf);
+				NULL);
 	if (ret < 0)
 		FATAL_ERROR("Could not setup up TX queue for port%u (%d)",
 		            (unsigned)port, ret);
diff --git a/examples/ip_fragmentation/main.c b/examples/ip_fragmentation/main.c
index 72cd2b2..4181125 100644
--- a/examples/ip_fragmentation/main.c
+++ b/examples/ip_fragmentation/main.c
@@ -106,25 +106,6 @@ 
 
 #define NB_MBUF   8192
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST	32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -208,24 +189,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 /*
  * IPv4 forwarding table
  */
@@ -851,6 +814,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_queue_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	struct rx_queue *rxq;
 	int socket, ret;
 	unsigned nb_ports;
@@ -942,7 +907,7 @@  MAIN(int argc, char **argv)
 
 		/* init one RX queue */
 		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
-					     socket, &rx_conf,
+					     socket, NULL,
 					     socket_direct_pool[socket]);
 		if (ret < 0) {
 			printf("\n");
@@ -964,8 +929,12 @@  MAIN(int argc, char **argv)
 			socket = (int) rte_lcore_to_socket_id(lcore_id);
 			printf("txq=%u,%d ", lcore_id, queueid);
 			fflush(stdout);
+
+			rte_eth_dev_info_get(portid, &dev_info);
+			txconf = &dev_info.default_txconf;
+			txconf->txq_flags = 0;
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-						     socket, &tx_conf);
+						     socket, txconf);
 			if (ret < 0) {
 				printf("\n");
 				rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
diff --git a/examples/ip_reassembly/main.c b/examples/ip_reassembly/main.c
index 3bb6afd..9e3aa52 100644
--- a/examples/ip_reassembly/main.c
+++ b/examples/ip_reassembly/main.c
@@ -114,25 +114,6 @@ 
 static uint32_t max_flow_num = DEF_FLOW_NUM;
 static uint32_t max_flow_ttl = DEF_FLOW_TTL;
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 #define NB_SOCKETS 8
@@ -236,26 +217,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_free_thresh = 32,
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	.txq_flags = 0x0,
-};
-
 /*
  * IPv4 forwarding table
  */
@@ -1058,6 +1019,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_queue_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	struct rx_queue *rxq;
 	int ret, socket;
 	unsigned nb_ports;
@@ -1149,7 +1112,7 @@  MAIN(int argc, char **argv)
 
 		/* init one RX queue */
 		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
-					     socket, &rx_conf,
+					     socket, NULL,
 					     rxq->pool);
 		if (ret < 0) {
 			printf("\n");
@@ -1172,8 +1135,13 @@  MAIN(int argc, char **argv)
 
 			printf("txq=%u,%d,%d ", lcore_id, queueid, socket);
 			fflush(stdout);
+
+			rte_eth_dev_info_get(portid, &dev_info);
+			txconf = &dev_info.default_txconf;
+			txconf->txq_flags = 0;
+
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-					socket, &tx_conf);
+					socket, txconf);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
 					"port=%d\n", ret, portid);
diff --git a/examples/ipv4_multicast/main.c b/examples/ipv4_multicast/main.c
index dfa0075..0f40d6c 100644
--- a/examples/ipv4_multicast/main.c
+++ b/examples/ipv4_multicast/main.c
@@ -92,25 +92,6 @@ 
 /* allow max jumbo frame 9.5 KB */
 #define	JUMBO_FRAME_MAX_SIZE	0x2600
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -176,24 +157,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 static struct rte_mempool *packet_pool, *header_pool, *clone_pool;
 
 
@@ -712,6 +675,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_queue_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	int ret;
 	uint16_t queueid;
 	unsigned lcore_id = 0, rx_lcore_id = 0;
@@ -810,7 +775,8 @@  MAIN(int argc, char **argv)
 		printf("rxq=%hu ", queueid);
 		fflush(stdout);
 		ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
-					     rte_eth_dev_socket_id(portid), &rx_conf,
+					     rte_eth_dev_socket_id(portid),
+					     NULL,
 					     packet_pool);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, port=%d\n",
@@ -824,8 +790,12 @@  MAIN(int argc, char **argv)
 				continue;
 			printf("txq=%u,%hu ", lcore_id, queueid);
 			fflush(stdout);
+
+			rte_eth_dev_info_get(portid, &dev_info);
+			txconf = &dev_info.default_txconf;
+			txconf->txq_flags = 0;
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-						     rte_lcore_to_socket_id(lcore_id), &tx_conf);
+						     rte_lcore_to_socket_id(lcore_id), txconf);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
 					  "port=%d\n", ret, portid);
diff --git a/examples/kni/main.c b/examples/kni/main.c
index 7df1b36..6cfd8fe 100644
--- a/examples/kni/main.c
+++ b/examples/kni/main.c
@@ -125,36 +125,6 @@  struct kni_port_params {
 
 static struct kni_port_params *kni_port_params_array[RTE_MAX_ETHPORTS];
 
-/* RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-/* RX ring configuration */
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = 8,   /* Ring prefetch threshold */
-		.hthresh = 8,   /* Ring host threshold */
-		.wthresh = 4,   /* Ring writeback threshold */
-	},
-	.rx_free_thresh = 0,    /* Immediately free RX descriptors */
-};
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-/* TX ring configuration */
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = 36,  /* Ring prefetch threshold */
-		.hthresh = 0,   /* Ring host threshold */
-		.wthresh = 0,   /* Ring writeback threshold */
-	},
-	.tx_free_thresh = 0,    /* Use PMD default values */
-	.tx_rs_thresh = 0,      /* Use PMD default values */
-};
 
 /* Options for configuring ethernet port */
 static struct rte_eth_conf port_conf = {
@@ -631,13 +601,13 @@  init_port(uint8_t port)
 		            (unsigned)port, ret);
 
 	ret = rte_eth_rx_queue_setup(port, 0, NB_RXD,
-		rte_eth_dev_socket_id(port), &rx_conf, pktmbuf_pool);
+		rte_eth_dev_socket_id(port), NULL, pktmbuf_pool);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
 				"port%u (%d)\n", (unsigned)port, ret);
 
 	ret = rte_eth_tx_queue_setup(port, 0, NB_TXD,
-		rte_eth_dev_socket_id(port), &tx_conf);
+		rte_eth_dev_socket_id(port), NULL);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
 				"port%u (%d)\n", (unsigned)port, ret);
diff --git a/examples/l2fwd-ivshmem/host/host.c b/examples/l2fwd-ivshmem/host/host.c
index 02e65b9..706a7b3 100644
--- a/examples/l2fwd-ivshmem/host/host.c
+++ b/examples/l2fwd-ivshmem/host/host.c
@@ -63,25 +63,6 @@ 
 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 /* mask of enabled ports */
@@ -117,24 +98,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 #define METADATA_NAME "l2fwd_ivshmem"
 #define CMDLINE_OPT_FWD_CONF "fwd-conf"
 
@@ -792,7 +755,8 @@  int main(int argc, char **argv)
 		/* init one RX queue */
 		fflush(stdout);
 		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
-						 rte_eth_dev_socket_id(portid), &rx_conf,
+						 rte_eth_dev_socket_id(portid),
+						 NULL,
 						 l2fwd_ivshmem_pktmbuf_pool);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
@@ -801,7 +765,8 @@  int main(int argc, char **argv)
 		/* init one TX queue on each port */
 		fflush(stdout);
 		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
-				rte_eth_dev_socket_id(portid), &tx_conf);
+				rte_eth_dev_socket_id(portid),
+				NULL);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 				ret, (unsigned) portid);
diff --git a/examples/l2fwd/main.c b/examples/l2fwd/main.c
index 4069d7c..c6131a7 100644
--- a/examples/l2fwd/main.c
+++ b/examples/l2fwd/main.c
@@ -77,25 +77,6 @@ 
 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
 #define NB_MBUF   8192
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -147,29 +128,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	/*
-	* As the example won't handle mult-segments and offload cases,
-	* set the flag by default.
-	*/
-	.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS | ETH_TXQ_FLAGS_NOOFFLOADS,
-};
-
 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
 
 /* Per-port statistics struct */
@@ -704,7 +662,8 @@  MAIN(int argc, char **argv)
 		/* init one RX queue */
 		fflush(stdout);
 		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
-					     rte_eth_dev_socket_id(portid), &rx_conf,
+					     rte_eth_dev_socket_id(portid),
+					     NULL,
 					     l2fwd_pktmbuf_pool);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
@@ -713,7 +672,8 @@  MAIN(int argc, char **argv)
 		/* init one TX queue on each port */
 		fflush(stdout);
 		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
-				rte_eth_dev_socket_id(portid), &tx_conf);
+				rte_eth_dev_socket_id(portid),
+				NULL);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 				ret, (unsigned) portid);
diff --git a/examples/l3fwd-acl/main.c b/examples/l3fwd-acl/main.c
index 9b2c21b..b979379 100644
--- a/examples/l3fwd-acl/main.c
+++ b/examples/l3fwd-acl/main.c
@@ -100,25 +100,6 @@ 
 	nb_lcores * MEMPOOL_CACHE_SIZE),			\
 	(unsigned)8192)
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -207,26 +188,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_free_thresh = 32,
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	.txq_flags = 0x0,
-};
-
 static struct rte_mempool *pktmbuf_pool[NB_SOCKETS];
 
 /***********************start of ACL part******************************/
@@ -1973,6 +1934,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	int ret;
 	unsigned nb_ports;
 	uint16_t queueid;
@@ -2063,8 +2026,13 @@  MAIN(int argc, char **argv)
 
 			printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
 			fflush(stdout);
+
+			rte_eth_dev_info_get(portid, &dev_info);
+			txconf = &dev_info.default_txconf;
+			if (port_conf.rxmode.jumbo_frame)
+				txconf->txq_flags = 0;
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-						     socketid, &tx_conf);
+						     socketid, txconf);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE,
 					"rte_eth_tx_queue_setup: err=%d, "
@@ -2098,7 +2066,7 @@  MAIN(int argc, char **argv)
 			fflush(stdout);
 
 			ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
-					socketid, &rx_conf,
+					socketid, NULL,
 					pktmbuf_pool[socketid]);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE,
diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index 57fc371..cbe9868 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -140,25 +140,6 @@ 
 	nb_lcores*MEMPOOL_CACHE_SIZE), \
 	(unsigned)8192)
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 #define NB_SOCKETS 8
@@ -255,26 +236,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_free_thresh = 32,
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	.txq_flags = 0x0,
-};
-
 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 
 
@@ -1513,6 +1474,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	int ret;
 	unsigned nb_ports;
 	uint16_t queueid;
@@ -1606,8 +1569,13 @@  MAIN(int argc, char **argv)
 
 			printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
 			fflush(stdout);
+
+			rte_eth_dev_info_get(portid, &dev_info);
+			txconf = &dev_info.default_txconf;
+			if (port_conf.rxmode.jumbo_frame)
+				txconf->txq_flags = 0;
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-						     socketid, &tx_conf);
+						     socketid, txconf);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE,
 					"rte_eth_tx_queue_setup: err=%d, "
@@ -1655,7 +1623,8 @@  MAIN(int argc, char **argv)
 			fflush(stdout);
 
 			ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
-				socketid, &rx_conf, pktmbuf_pool[socketid]);
+				socketid, NULL,
+				pktmbuf_pool[socketid]);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE,
 					"rte_eth_rx_queue_setup: err=%d, "
diff --git a/examples/l3fwd-vf/main.c b/examples/l3fwd-vf/main.c
index 2ca5c21..d1049ed 100644
--- a/examples/l3fwd-vf/main.c
+++ b/examples/l3fwd-vf/main.c
@@ -215,30 +215,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_free_thresh = 32,
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	.txq_flags = (ETH_TXQ_FLAGS_NOMULTSEGS |
-		      ETH_TXQ_FLAGS_NOVLANOFFL |
-		      ETH_TXQ_FLAGS_NOXSUMSCTP |
-		      ETH_TXQ_FLAGS_NOXSUMUDP |
-		      ETH_TXQ_FLAGS_NOXSUMTCP)
-};
-
 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 
 
@@ -979,6 +955,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	int ret;
 	unsigned nb_ports;
 	uint16_t queueid;
@@ -1055,8 +1033,13 @@  MAIN(int argc, char **argv)
 
 		printf("txq=%d,%d,%d ", portid, 0, socketid);
 		fflush(stdout);
+
+		rte_eth_dev_info_get(portid, &dev_info);
+		txconf = &dev_info.default_txconf;
+		if (port_conf.rxmode.jumbo_frame)
+			txconf->txq_flags = 0;
 		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
-						 socketid, &tx_conf);
+						 socketid, txconf);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
 				"port=%d\n", ret, portid);
@@ -1086,7 +1069,8 @@  MAIN(int argc, char **argv)
 			fflush(stdout);
 
 			ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
-						socketid, &rx_conf, pktmbuf_pool[socketid]);
+						socketid, NULL,
+						pktmbuf_pool[socketid]);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
 						"port=%d\n", ret, portid);
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index bef409a..999c3e8 100755
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -137,25 +137,6 @@ 
 				nb_lcores*MEMPOOL_CACHE_SIZE),												\
 				(unsigned)8192)
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST     32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -259,31 +240,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_free_thresh = 32,
-};
-
-static struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	.txq_flags = (ETH_TXQ_FLAGS_NOMULTSEGS |
-			ETH_TXQ_FLAGS_NOVLANOFFL |
-			ETH_TXQ_FLAGS_NOXSUMSCTP |
-			ETH_TXQ_FLAGS_NOXSUMUDP |
-			ETH_TXQ_FLAGS_NOXSUMTCP)
-
-};
-
 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
@@ -1974,7 +1930,6 @@  parse_args(int argc, char **argv)
 
 				printf("jumbo frame is enabled - disabling simple TX path\n");
 				port_conf.rxmode.jumbo_frame = 1;
-				tx_conf.txq_flags = 0;
 
 				/* if no max-pkt-len set, use the default value ETHER_MAX_LEN */
 				if (0 == getopt_long(argc, argvopt, "", &lenopts, &option_index)) {
@@ -2448,6 +2403,8 @@  int
 MAIN(int argc, char **argv)
 {
 	struct lcore_conf *qconf;
+	struct rte_eth_dev_info dev_info;
+	struct rte_eth_txconf *txconf;
 	int ret;
 	unsigned nb_ports;
 	uint16_t queueid;
@@ -2541,8 +2498,13 @@  MAIN(int argc, char **argv)
 
 			printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
 			fflush(stdout);
+
+			rte_eth_dev_info_get(portid, &dev_info);
+			txconf = &dev_info.default_txconf;
+			if (port_conf.rxmode.jumbo_frame)
+				txconf->txq_flags = 0;
 			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
-						     socketid, &tx_conf);
+						     socketid, txconf);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
 					"port=%d\n", ret, portid);
@@ -2574,7 +2536,9 @@  MAIN(int argc, char **argv)
 			fflush(stdout);
 
 			ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
-				        socketid, &rx_conf, pktmbuf_pool[socketid]);
+					socketid,
+					NULL,
+					pktmbuf_pool[socketid]);
 			if (ret < 0)
 				rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
 						"port=%d\n", ret, portid);
diff --git a/examples/link_status_interrupt/main.c b/examples/link_status_interrupt/main.c
index 1a87551..9dc0df8 100644
--- a/examples/link_status_interrupt/main.c
+++ b/examples/link_status_interrupt/main.c
@@ -78,25 +78,6 @@ 
 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
 #define NB_MBUF   8192
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -153,24 +134,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 struct rte_mempool * lsi_pktmbuf_pool = NULL;
 
 /* Per-port statistics struct */
@@ -754,7 +717,8 @@  MAIN(int argc, char **argv)
 		/* init one RX queue */
 		fflush(stdout);
 		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
-					     rte_eth_dev_socket_id(portid), &rx_conf,
+					     rte_eth_dev_socket_id(portid),
+					     NULL,
 					     lsi_pktmbuf_pool);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d, port=%u\n",
@@ -763,7 +727,8 @@  MAIN(int argc, char **argv)
 		/* init one TX queue logical core on each port */
 		fflush(stdout);
 		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
-				rte_eth_dev_socket_id(portid), &tx_conf);
+				rte_eth_dev_socket_id(portid),
+				NULL);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d,port=%u\n",
 				  ret, (unsigned) portid);
diff --git a/examples/load_balancer/init.c b/examples/load_balancer/init.c
index 2f00a70..448425b 100644
--- a/examples/load_balancer/init.c
+++ b/examples/load_balancer/init.c
@@ -95,26 +95,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = APP_DEFAULT_NIC_RX_PTHRESH,
-		.hthresh = APP_DEFAULT_NIC_RX_HTHRESH,
-		.wthresh = APP_DEFAULT_NIC_RX_WTHRESH,
-	},
-	.rx_free_thresh = APP_DEFAULT_NIC_RX_FREE_THRESH,
-	.rx_drop_en = APP_DEFAULT_NIC_RX_DROP_EN,
-};
-
-static struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = APP_DEFAULT_NIC_TX_PTHRESH,
-		.hthresh = APP_DEFAULT_NIC_TX_HTHRESH,
-		.wthresh = APP_DEFAULT_NIC_TX_WTHRESH,
-	},
-	.tx_free_thresh = APP_DEFAULT_NIC_TX_FREE_THRESH,
-	.tx_rs_thresh = APP_DEFAULT_NIC_TX_RS_THRESH,
-};
-
 static void
 app_assign_worker_ids(void)
 {
@@ -495,7 +475,7 @@  app_init_nics(void)
 				queue,
 				(uint16_t) app.nic_rx_ring_size,
 				socket,
-				&rx_conf,
+				NULL,
 				pool);
 			if (ret < 0) {
 				rte_panic("Cannot init RX queue %u for port %u (%d)\n",
@@ -516,7 +496,7 @@  app_init_nics(void)
 				0,
 				(uint16_t) app.nic_tx_ring_size,
 				socket,
-				&tx_conf);
+				NULL);
 			if (ret < 0) {
 				rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 					port,
diff --git a/examples/multi_process/client_server_mp/mp_server/init.c b/examples/multi_process/client_server_mp/mp_server/init.c
index a84d1ee..5b3f06e 100644
--- a/examples/multi_process/client_server_mp/mp_server/init.c
+++ b/examples/multi_process/client_server_mp/mp_server/init.c
@@ -84,41 +84,6 @@ 
 
 #define NO_FLAGS 0
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-/* Default configuration for rx and tx thresholds etc. */
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define MP_DEFAULT_PTHRESH 36
-#define MP_DEFAULT_RX_HTHRESH 8
-#define MP_DEFAULT_TX_HTHRESH 0
-#define MP_DEFAULT_WTHRESH 0
-
-static const struct rte_eth_rxconf rx_conf_default = {
-		.rx_thresh = {
-				.pthresh = MP_DEFAULT_PTHRESH,
-				.hthresh = MP_DEFAULT_RX_HTHRESH,
-				.wthresh = MP_DEFAULT_WTHRESH,
-		},
-};
-
-static const struct rte_eth_txconf tx_conf_default = {
-		.tx_thresh = {
-				.pthresh = MP_DEFAULT_PTHRESH,
-				.hthresh = MP_DEFAULT_TX_HTHRESH,
-				.wthresh = MP_DEFAULT_WTHRESH,
-		},
-		.tx_free_thresh = 0, /* Use PMD default values */
-		.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 /* The mbuf pool for packet rx */
 struct rte_mempool *pktmbuf_pool;
 
@@ -184,13 +149,15 @@  init_port(uint8_t port_num)
 
 	for (q = 0; q < rx_rings; q++) {
 		retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
-				rte_eth_dev_socket_id(port_num), &rx_conf_default, pktmbuf_pool);
+				rte_eth_dev_socket_id(port_num),
+				NULL, pktmbuf_pool);
 		if (retval < 0) return retval;
 	}
 
 	for ( q = 0; q < tx_rings; q ++ ) {
 		retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
-				rte_eth_dev_socket_id(port_num), &tx_conf_default);
+				rte_eth_dev_socket_id(port_num),
+				NULL);
 		if (retval < 0) return retval;
 	}
 
diff --git a/examples/multi_process/l2fwd_fork/main.c b/examples/multi_process/l2fwd_fork/main.c
index 03fba55..5899875 100644
--- a/examples/multi_process/l2fwd_fork/main.c
+++ b/examples/multi_process/l2fwd_fork/main.c
@@ -96,25 +96,6 @@  enum l2fwd_cmd{
 	CMD_STOP,
 };
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -190,25 +171,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-	.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS | ETH_TXQ_FLAGS_NOOFFLOADS,
-};
-
 static struct rte_mempool * l2fwd_pktmbuf_pool[RTE_MAX_ETHPORTS];
 
 /* Per-port statistics struct */
@@ -1170,7 +1132,8 @@  MAIN(int argc, char **argv)
 		/* init one RX queue */
 		fflush(stdout);
 		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
-					     rte_eth_dev_socket_id(portid), &rx_conf,
+					     rte_eth_dev_socket_id(portid),
+					     NULL,
 					     l2fwd_pktmbuf_pool[portid]);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
@@ -1179,7 +1142,8 @@  MAIN(int argc, char **argv)
 		/* init one TX queue on each port */
 		fflush(stdout);
 		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
-				rte_eth_dev_socket_id(portid), &tx_conf);
+				rte_eth_dev_socket_id(portid),
+				NULL);
 		if (ret < 0)
 			rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 				ret, (unsigned) portid);
diff --git a/examples/multi_process/symmetric_mp/main.c b/examples/multi_process/symmetric_mp/main.c
index b8f31b3..638d167 100644
--- a/examples/multi_process/symmetric_mp/main.c
+++ b/examples/multi_process/symmetric_mp/main.c
@@ -89,36 +89,6 @@ 
 #define PARAM_PROC_ID "proc-id"
 #define PARAM_NUM_PROCS "num-procs"
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-/* Default configuration for rx and tx thresholds etc. */
-static const struct rte_eth_rxconf rx_conf_default = {
-	.rx_thresh = {
-		.pthresh = 8,
-		.hthresh = 8,
-		.wthresh = 4,
-	},
-};
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-static const struct rte_eth_txconf tx_conf_default = {
-	.tx_thresh = {
-		.pthresh = 36,
-		.hthresh = 0,
-		.wthresh = 0,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 /* for each lcore, record the elements of the ports array to use */
 struct lcore_ports{
 	unsigned start_port;
@@ -277,7 +247,8 @@  smp_port_init(uint8_t port, struct rte_mempool *mbuf_pool, uint16_t num_queues)
 
 	for (q = 0; q < rx_rings; q ++) {
 		retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
-				rte_eth_dev_socket_id(port), &rx_conf_default,
+				rte_eth_dev_socket_id(port),
+				NULL,
 				mbuf_pool);
 		if (retval < 0)
 			return retval;
@@ -285,7 +256,8 @@  smp_port_init(uint8_t port, struct rte_mempool *mbuf_pool, uint16_t num_queues)
 
 	for (q = 0; q < tx_rings; q ++) {
 		retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
-				rte_eth_dev_socket_id(port), &tx_conf_default);
+				rte_eth_dev_socket_id(port),
+				NULL);
 		if (retval < 0)
 			return retval;
 	}
diff --git a/examples/netmap_compat/bridge/bridge.c b/examples/netmap_compat/bridge/bridge.c
index 898277e..f935b3b 100644
--- a/examples/netmap_compat/bridge/bridge.c
+++ b/examples/netmap_compat/bridge/bridge.c
@@ -67,29 +67,6 @@  struct rte_eth_conf eth_conf = {
 	},
 };
 
-struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-	    .pthresh = 36,
-	    .hthresh = 0,
-	    .wthresh = 0,
-	},
-	.tx_free_thresh = 0,
-	.tx_rs_thresh = 0,
-	.txq_flags = (ETH_TXQ_FLAGS_NOMULTSEGS |
-			ETH_TXQ_FLAGS_NOVLANOFFL |
-			ETH_TXQ_FLAGS_NOXSUMSCTP |
-			ETH_TXQ_FLAGS_NOXSUMUDP |
-			ETH_TXQ_FLAGS_NOXSUMTCP)
-};
-
-struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-	    .pthresh = 8,
-	    .hthresh = 8,
-	    .wthresh = 4,
-	},
-};
-
 #define	MAX_QUEUE_NUM	1
 #define	RX_QUEUE_NUM	1
 #define	TX_QUEUE_NUM	1
@@ -103,8 +80,6 @@  struct rte_eth_rxconf rx_conf = {
 
 struct rte_netmap_port_conf port_conf = {
 	.eth_conf = &eth_conf,
-	.tx_conf  = &tx_conf,
-	.rx_conf  = &rx_conf,
 	.socket_id = SOCKET_ID_ANY,
 	.nr_tx_rings = TX_QUEUE_NUM,
 	.nr_rx_rings = RX_QUEUE_NUM,
diff --git a/examples/netmap_compat/lib/compat_netmap.c b/examples/netmap_compat/lib/compat_netmap.c
index 44b3f8e..2348366 100644
--- a/examples/netmap_compat/lib/compat_netmap.c
+++ b/examples/netmap_compat/lib/compat_netmap.c
@@ -713,7 +713,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 
 	for (i = 0; i < conf->nr_tx_rings; i++) {
 		ret = rte_eth_tx_queue_setup(portid, i, tx_slots,
-			conf->socket_id, conf->tx_conf);
+			conf->socket_id, NULL);
 
 		if (ret < 0) {
 			RTE_LOG(ERR, USER1,
@@ -724,7 +724,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 		}
 
 		ret = rte_eth_rx_queue_setup(portid, i, rx_slots,
-			conf->socket_id, conf->rx_conf, conf->pool);
+			conf->socket_id, NULL, conf->pool);
 
 		if (ret < 0) {
 			RTE_LOG(ERR, USER1,
@@ -737,8 +737,6 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 
 	/* copy config to the private storage. */
 	ports[portid].eth_conf = conf->eth_conf[0];
-	ports[portid].rx_conf = conf->rx_conf[0];
-	ports[portid].tx_conf = conf->tx_conf[0];
 	ports[portid].pool = conf->pool;
 	ports[portid].socket_id = conf->socket_id;
 	ports[portid].nr_tx_rings = conf->nr_tx_rings;
diff --git a/examples/netmap_compat/lib/compat_netmap.h b/examples/netmap_compat/lib/compat_netmap.h
index f7f2276..f8a7812 100644
--- a/examples/netmap_compat/lib/compat_netmap.h
+++ b/examples/netmap_compat/lib/compat_netmap.h
@@ -56,8 +56,6 @@  struct rte_netmap_conf {
 
 struct rte_netmap_port_conf {
 	struct rte_eth_conf   *eth_conf;
-	struct rte_eth_txconf *tx_conf;
-	struct rte_eth_rxconf *rx_conf;
 	struct rte_mempool    *pool;
 	int32_t socket_id;
 	uint16_t nr_tx_rings;
diff --git a/examples/qos_meter/main.c b/examples/qos_meter/main.c
index b4b8c4f..82a90ac 100755
--- a/examples/qos_meter/main.c
+++ b/examples/qos_meter/main.c
@@ -102,26 +102,6 @@  static struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-	.rx_thresh = {
-		.pthresh = 8, /* RX prefetch threshold reg */
-		.hthresh = 8, /* RX host threshold reg */
-		.wthresh = 4, /* RX write-back threshold reg */
-	},
-	.rx_free_thresh = 32,
-};
-
-static const struct rte_eth_txconf tx_conf = {
-	.tx_thresh = {
-		.pthresh = 36, /* TX prefetch threshold reg */
-		.hthresh = 0,  /* TX host threshold reg */
-		.wthresh = 0,  /* TX write-back threshold reg */
-	},
-	.tx_free_thresh = 0,
-	.tx_rs_thresh = 0,
-	.txq_flags = 0x0,
-};
-
 #define NIC_RX_QUEUE_DESC               128
 #define NIC_TX_QUEUE_DESC               512
 
@@ -394,11 +374,15 @@  MAIN(int argc, char **argv)
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret);
 
-	ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, rte_eth_dev_socket_id(port_rx), &rx_conf, pool);
+	ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC,
+				rte_eth_dev_socket_id(port_rx),
+				NULL, pool);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret);
 
-	ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, rte_eth_dev_socket_id(port_rx), &tx_conf);
+	ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC,
+				rte_eth_dev_socket_id(port_rx),
+				NULL);
 	if (ret < 0)
 	rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret);
 
@@ -406,11 +390,15 @@  MAIN(int argc, char **argv)
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret);
 
-	ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, rte_eth_dev_socket_id(port_tx), &rx_conf, pool);
+	ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC,
+				rte_eth_dev_socket_id(port_tx),
+				NULL, pool);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret);
 
-	ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, rte_eth_dev_socket_id(port_tx), &tx_conf);
+	ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC,
+				rte_eth_dev_socket_id(port_tx),
+				NULL);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret);
 
diff --git a/examples/quota_watermark/qw/init.c b/examples/quota_watermark/qw/init.c
index a7f8c85..5adb906 100644
--- a/examples/quota_watermark/qw/init.c
+++ b/examples/quota_watermark/qw/init.c
@@ -64,24 +64,6 @@  static const struct rte_eth_conf port_conf = {
 	},
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-    .rx_thresh = {
-        .pthresh = 8,
-        .hthresh = 8,
-        .wthresh = 4,
-    },
-};
-
-static const struct rte_eth_txconf tx_conf = {
-    .tx_thresh = {
-        .pthresh = 36,
-        .hthresh = 0,
-        .wthresh = 0,
-    },
-    .tx_free_thresh = 0,
-    .tx_rs_thresh = 0,
-};
-
 static struct rte_eth_fc_conf fc_conf = {
     .mode       = RTE_FC_TX_PAUSE,
     .high_water = 80 * 510 / 100,
@@ -104,15 +86,17 @@  void configure_eth_port(uint8_t port_id)
 
     /* Initialize the port's RX queue */
     ret = rte_eth_rx_queue_setup(port_id, 0, RX_DESC_PER_QUEUE,
-                                 rte_eth_dev_socket_id(port_id), &rx_conf,
-                                 mbuf_pool);
+				rte_eth_dev_socket_id(port_id),
+				NULL,
+				mbuf_pool);
     if (ret < 0)
         rte_exit(EXIT_FAILURE, "Failed to setup RX queue on "
                                "port %u (error %d)\n", (unsigned) port_id, ret);
 
     /* Initialize the port's TX queue */
     ret = rte_eth_tx_queue_setup(port_id, 0, TX_DESC_PER_QUEUE,
-                                 rte_eth_dev_socket_id(port_id), &tx_conf);
+				rte_eth_dev_socket_id(port_id),
+				NULL);
     if (ret < 0)
         rte_exit(EXIT_FAILURE, "Failed to setup TX queue on "
                                "port %u (error %d)\n", (unsigned) port_id, ret);
diff --git a/examples/vhost_xen/main.c b/examples/vhost_xen/main.c
index b275747..ec30947 100644
--- a/examples/vhost_xen/main.c
+++ b/examples/vhost_xen/main.c
@@ -135,31 +135,6 @@  static uint32_t enable_vm2vm = 1;
 /* Enable stats. */
 static uint32_t enable_stats = 0;
 
-/* Default configuration for rx and tx thresholds etc. */
-static const struct rte_eth_rxconf rx_conf_default = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_drop_en = 1,
-};
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe/igb PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-static const struct rte_eth_txconf tx_conf_default = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 /* empty vmdq configuration structure. Filled in programatically */
 static const struct rte_eth_conf vmdq_conf_default = {
 	.rxmode = {
@@ -301,6 +276,7 @@  static inline int
 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 {
 	struct rte_eth_dev_info dev_info;
+	struct rte_eth_rxconf *rxconf;
 	struct rte_eth_conf port_conf;
 	uint16_t rx_rings, tx_rings = (uint16_t)rte_lcore_count();
 	const uint16_t rx_ring_size = RTE_TEST_RX_DESC_DEFAULT, tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
@@ -331,17 +307,21 @@  port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 	if (retval != 0)
 		return retval;
 
+	rte_eth_dev_info_get(port, &dev_info);
+	rxconf = &dev_info.default_rxconf;
+	rxconf->rx_drop_en = 1;
 	/* Setup the queues. */
 	for (q = 0; q < rx_rings; q ++) {
 		retval = rte_eth_rx_queue_setup(port, q, rx_ring_size,
-						rte_eth_dev_socket_id(port), &rx_conf_default,
+						rte_eth_dev_socket_id(port), rxconf,
 						mbuf_pool);
 		if (retval < 0)
 			return retval;
 	}
 	for (q = 0; q < tx_rings; q ++) {
 		retval = rte_eth_tx_queue_setup(port, q, tx_ring_size,
-						rte_eth_dev_socket_id(port), &tx_conf_default);
+						rte_eth_dev_socket_id(port),
+						NULL);
 		if (retval < 0)
 			return retval;
 	}
diff --git a/examples/vmdq/main.c b/examples/vmdq/main.c
index 35df234..7246663 100644
--- a/examples/vmdq/main.c
+++ b/examples/vmdq/main.c
@@ -81,25 +81,6 @@ 
 #define MBUF_CACHE_SIZE 64
 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST 32
 
 /*
@@ -117,37 +98,6 @@  static uint32_t enabled_port_mask = 0;
 static uint32_t num_queues = 8;
 static uint32_t num_pools = 8;
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-/* Default configuration for rx and tx thresholds etc. */
-static const struct rte_eth_rxconf rx_conf_default = {
-	.rx_thresh = {
-		.pthresh = RX_PTHRESH,
-		.hthresh = RX_HTHRESH,
-		.wthresh = RX_WTHRESH,
-	},
-	.rx_drop_en = 1,
-};
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe/igb PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-static const struct rte_eth_txconf tx_conf_default = {
-	.tx_thresh = {
-		.pthresh = TX_PTHRESH,
-		.hthresh = TX_HTHRESH,
-		.wthresh = TX_WTHRESH,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 /* empty vmdq configuration structure. Filled in programatically */
 static const struct rte_eth_conf vmdq_conf_default = {
 	.rxmode = {
@@ -283,6 +233,7 @@  static inline int
 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 {
 	struct rte_eth_dev_info dev_info;
+	struct rte_eth_rxconf *rxconf;
 	struct rte_eth_conf port_conf;
 	uint16_t rxRings, txRings = (uint16_t)rte_lcore_count();
 	const uint16_t rxRingSize = RTE_TEST_RX_DESC_DEFAULT, txRingSize = RTE_TEST_TX_DESC_DEFAULT;
@@ -308,17 +259,22 @@  port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 	if (retval != 0)
 		return retval;
 
+	rte_eth_dev_info_get(port, &dev_info);
+	rxconf = &dev_info.default_rxconf;
+	rxconf->rx_drop_en = 1;
 	for (q = 0; q < rxRings; q ++) {
 		retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
-						rte_eth_dev_socket_id(port), &rx_conf_default,
-						mbuf_pool);
+					rte_eth_dev_socket_id(port),
+					rxconf,
+					mbuf_pool);
 		if (retval < 0)
 			return retval;
 	}
 
 	for (q = 0; q < txRings; q ++) {
 		retval = rte_eth_tx_queue_setup(port, q, txRingSize,
-						rte_eth_dev_socket_id(port), &tx_conf_default);
+					rte_eth_dev_socket_id(port),
+					NULL);
 		if (retval < 0)
 			return retval;
 	}
diff --git a/examples/vmdq_dcb/main.c b/examples/vmdq_dcb/main.c
index 2f708a1..20726e5 100644
--- a/examples/vmdq_dcb/main.c
+++ b/examples/vmdq_dcb/main.c
@@ -87,36 +87,6 @@  static uint32_t enabled_port_mask = 0;
 /* number of pools (if user does not specify any, 16 by default */
 static enum rte_eth_nb_pools num_pools = ETH_16_POOLS;
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-/* Default configuration for rx and tx thresholds etc. */
-static const struct rte_eth_rxconf rx_conf_default = {
-	.rx_thresh = {
-		.pthresh = 8,
-		.hthresh = 8,
-		.wthresh = 4,
-	},
-};
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-static const struct rte_eth_txconf tx_conf_default = {
-	.tx_thresh = {
-		.pthresh = 36,
-		.hthresh = 0,
-		.wthresh = 0,
-	},
-	.tx_free_thresh = 0, /* Use PMD default values */
-	.tx_rs_thresh = 0, /* Use PMD default values */
-};
-
 /* empty vmdq+dcb configuration structure. Filled in programatically */
 static const struct rte_eth_conf vmdq_dcb_conf_default = {
 	.rxmode = {
@@ -212,7 +182,8 @@  port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 
 	for (q = 0; q < rxRings; q ++) {
 		retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
-						rte_eth_dev_socket_id(port), &rx_conf_default,
+						rte_eth_dev_socket_id(port),
+						NULL,
 						mbuf_pool);
 		if (retval < 0)
 			return retval;
@@ -220,7 +191,8 @@  port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 
 	for (q = 0; q < txRings; q ++) {
 		retval = rte_eth_tx_queue_setup(port, q, txRingSize,
-						rte_eth_dev_socket_id(port), &tx_conf_default);
+						rte_eth_dev_socket_id(port),
+						NULL);
 		if (retval < 0)
 			return retval;
 	}