Imported upstream release 16.04

* gbp import-orig ../dpdk-16.04.tar.xz

Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

2 files changed, 1022 insertions, 0 deletions

diff --git a/examples/ip_fragmentation/Makefile b/examples/ip_fragmentation/Makefile
new file mode 100644
index 00000000..c321e6a1
--- /dev/null
+++ b/examples/ip_fragmentation/Makefile
@@ -0,0 +1,57 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+#   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.
+#
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overriden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = ip_fragmentation
+
+# all source are stored in SRCS-y
+SRCS-y := main.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+# workaround for a gcc bug with noreturn attribute
+# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
+ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
+CFLAGS_main.o += -Wno-return-type
+endif
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/ip_fragmentation/main.c b/examples/ip_fragmentation/main.c
new file mode 100644
index 00000000..81a49187
--- /dev/null
+++ b/examples/ip_fragmentation/main.c
@@ -0,0 +1,965 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   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 <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <string.h>
+#include <sys/queue.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <getopt.h>
+
+#include <rte_common.h>
+#include <rte_byteorder.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_random.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_lpm.h>
+#include <rte_lpm6.h>
+#include <rte_ip.h>
+#include <rte_string_fns.h>
+
+#include <rte_ip_frag.h>
+
+#define RTE_LOGTYPE_IP_FRAG RTE_LOGTYPE_USER1
+
+/* allow max jumbo frame 9.5 KB */
+#define JUMBO_FRAME_MAX_SIZE	0x2600
+
+#define	ROUNDUP_DIV(a, b)	(((a) + (b) - 1) / (b))
+
+/*
+ * Default byte size for the IPv6 Maximum Transfer Unit (MTU).
+ * This value includes the size of IPv6 header.
+ */
+#define	IPV4_MTU_DEFAULT	ETHER_MTU
+#define	IPV6_MTU_DEFAULT	ETHER_MTU
+
+/*
+ * Default payload in bytes for the IPv6 packet.
+ */
+#define	IPV4_DEFAULT_PAYLOAD	(IPV4_MTU_DEFAULT - sizeof(struct ipv4_hdr))
+#define	IPV6_DEFAULT_PAYLOAD	(IPV6_MTU_DEFAULT - sizeof(struct ipv6_hdr))
+
+/*
+ * Max number of fragments per packet expected - defined by config file.
+ */
+#define	MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
+
+#define NB_MBUF   8192
+
+#define MAX_PKT_BURST	32
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
+
+/* Configure how many packets ahead to prefetch, when reading packets */
+#define PREFETCH_OFFSET	3
+
+/*
+ * Configurable number of RX/TX ring descriptors
+ */
+#define RTE_TEST_RX_DESC_DEFAULT 128
+#define RTE_TEST_TX_DESC_DEFAULT 512
+static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
+static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+
+/* ethernet addresses of ports */
+static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
+
+#ifndef IPv4_BYTES
+#define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
+#define IPv4_BYTES(addr) \
+		(uint8_t) (((addr) >> 24) & 0xFF),\
+		(uint8_t) (((addr) >> 16) & 0xFF),\
+		(uint8_t) (((addr) >> 8) & 0xFF),\
+		(uint8_t) ((addr) & 0xFF)
+#endif
+
+#ifndef IPv6_BYTES
+#define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
+                       "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
+#define IPv6_BYTES(addr) \
+	addr[0],  addr[1], addr[2],  addr[3], \
+	addr[4],  addr[5], addr[6],  addr[7], \
+	addr[8],  addr[9], addr[10], addr[11],\
+	addr[12], addr[13],addr[14], addr[15]
+#endif
+
+#define IPV6_ADDR_LEN 16
+
+/* mask of enabled ports */
+static int enabled_port_mask = 0;
+
+static int rx_queue_per_lcore = 1;
+
+#define MBUF_TABLE_SIZE  (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
+
+struct mbuf_table {
+	uint16_t len;
+	struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
+};
+
+struct rx_queue {
+	struct rte_mempool *direct_pool;
+	struct rte_mempool *indirect_pool;
+	struct rte_lpm *lpm;
+	struct rte_lpm6 *lpm6;
+	uint8_t portid;
+};
+
+#define MAX_RX_QUEUE_PER_LCORE 16
+#define MAX_TX_QUEUE_PER_PORT 16
+struct lcore_queue_conf {
+	uint16_t n_rx_queue;
+	uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
+	struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
+	struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
+} __rte_cache_aligned;
+struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
+
+static const struct rte_eth_conf port_conf = {
+	.rxmode = {
+		.max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
+		.split_hdr_size = 0,
+		.header_split   = 0, /**< Header Split disabled */
+		.hw_ip_checksum = 1, /**< IP checksum offload enabled */
+		.hw_vlan_filter = 0, /**< VLAN filtering disabled */
+		.jumbo_frame    = 1, /**< Jumbo Frame Support enabled */
+		.hw_strip_crc   = 0, /**< CRC stripped by hardware */
+	},
+	.txmode = {
+		.mq_mode = ETH_MQ_TX_NONE,
+	},
+};
+
+/*
+ * IPv4 forwarding table
+ */
+struct l3fwd_ipv4_route {
+	uint32_t ip;
+	uint8_t  depth;
+	uint8_t  if_out;
+};
+
+struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
+		{IPv4(100,10,0,0), 16, 0},
+		{IPv4(100,20,0,0), 16, 1},
+		{IPv4(100,30,0,0), 16, 2},
+		{IPv4(100,40,0,0), 16, 3},
+		{IPv4(100,50,0,0), 16, 4},
+		{IPv4(100,60,0,0), 16, 5},
+		{IPv4(100,70,0,0), 16, 6},
+		{IPv4(100,80,0,0), 16, 7},
+};
+
+/*
+ * IPv6 forwarding table
+ */
+
+struct l3fwd_ipv6_route {
+	uint8_t ip[IPV6_ADDR_LEN];
+	uint8_t depth;
+	uint8_t if_out;
+};
+
+static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
+	{{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
+	{{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
+	{{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
+	{{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
+	{{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
+	{{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
+	{{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
+	{{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
+};
+
+#define LPM_MAX_RULES         1024
+#define LPM6_MAX_RULES         1024
+#define LPM6_NUMBER_TBL8S (1 << 16)
+
+struct rte_lpm6_config lpm6_config = {
+		.max_rules = LPM6_MAX_RULES,
+		.number_tbl8s = LPM6_NUMBER_TBL8S,
+		.flags = 0
+};
+
+static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
+static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
+static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
+static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
+
+/* Send burst of packets on an output interface */
+static inline int
+send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint8_t port)
+{
+	struct rte_mbuf **m_table;
+	int ret;
+	uint16_t queueid;
+
+	queueid = qconf->tx_queue_id[port];
+	m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
+
+	ret = rte_eth_tx_burst(port, queueid, m_table, n);
+	if (unlikely(ret < n)) {
+		do {
+			rte_pktmbuf_free(m_table[ret]);
+		} while (++ret < n);
+	}
+
+	return 0;
+}
+
+static inline void
+l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
+		uint8_t queueid, uint8_t port_in)
+{
+	struct rx_queue *rxq;
+	uint32_t i, len, next_hop_ipv4;
+	uint8_t next_hop_ipv6, port_out, ipv6;
+	int32_t len2;
+
+	ipv6 = 0;
+	rxq = &qconf->rx_queue_list[queueid];
+
+	/* by default, send everything back to the source port */
+	port_out = port_in;
+
+	/* Remove the Ethernet header and trailer from the input packet */
+	rte_pktmbuf_adj(m, (uint16_t)sizeof(struct ether_hdr));
+
+	/* Build transmission burst */
+	len = qconf->tx_mbufs[port_out].len;
+
+	/* if this is an IPv4 packet */
+	if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
+		struct ipv4_hdr *ip_hdr;
+		uint32_t ip_dst;
+		/* Read the lookup key (i.e. ip_dst) from the input packet */
+		ip_hdr = rte_pktmbuf_mtod(m, struct ipv4_hdr *);
+		ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
+
+		/* Find destination port */
+		if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop_ipv4) == 0 &&
+				(enabled_port_mask & 1 << next_hop_ipv4) != 0) {
+			port_out = next_hop_ipv4;
+
+			/* Build transmission burst for new port */
+			len = qconf->tx_mbufs[port_out].len;
+		}
+
+		/* if we don't need to do any fragmentation */
+		if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
+			qconf->tx_mbufs[port_out].m_table[len] = m;
+			len2 = 1;
+		} else {
+			len2 = rte_ipv4_fragment_packet(m,
+				&qconf->tx_mbufs[port_out].m_table[len],
+				(uint16_t)(MBUF_TABLE_SIZE - len),
+				IPV4_MTU_DEFAULT,
+				rxq->direct_pool, rxq->indirect_pool);
+
+			/* Free input packet */
+			rte_pktmbuf_free(m);
+
+			/* If we fail to fragment the packet */
+			if (unlikely (len2 < 0))
+				return;
+		}
+	} else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
+		/* if this is an IPv6 packet */
+		struct ipv6_hdr *ip_hdr;
+
+		ipv6 = 1;
+
+		/* Read the lookup key (i.e. ip_dst) from the input packet */
+		ip_hdr = rte_pktmbuf_mtod(m, struct ipv6_hdr *);
+
+		/* Find destination port */
+		if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr, &next_hop_ipv6) == 0 &&
+				(enabled_port_mask & 1 << next_hop_ipv6) != 0) {
+			port_out = next_hop_ipv6;
+
+			/* Build transmission burst for new port */
+			len = qconf->tx_mbufs[port_out].len;
+		}
+
+		/* if we don't need to do any fragmentation */
+		if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
+			qconf->tx_mbufs[port_out].m_table[len] = m;
+			len2 = 1;
+		} else {
+			len2 = rte_ipv6_fragment_packet(m,
+				&qconf->tx_mbufs[port_out].m_table[len],
+				(uint16_t)(MBUF_TABLE_SIZE - len),
+				IPV6_MTU_DEFAULT,
+				rxq->direct_pool, rxq->indirect_pool);
+
+			/* Free input packet */
+			rte_pktmbuf_free(m);
+
+			/* If we fail to fragment the packet */
+			if (unlikely (len2 < 0))
+				return;
+		}
+	}
+	/* else, just forward the packet */
+	else {
+		qconf->tx_mbufs[port_out].m_table[len] = m;
+		len2 = 1;
+	}
+
+	for (i = len; i < len + len2; i ++) {
+		void *d_addr_bytes;
+
+		m = qconf->tx_mbufs[port_out].m_table[i];
+		struct ether_hdr *eth_hdr = (struct ether_hdr *)
+			rte_pktmbuf_prepend(m, (uint16_t)sizeof(struct ether_hdr));
+		if (eth_hdr == NULL) {
+			rte_panic("No headroom in mbuf.\n");
+		}
+
+		m->l2_len = sizeof(struct ether_hdr);
+
+		/* 02:00:00:00:00:xx */
+		d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
+		*((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
+
+		/* src addr */
+		ether_addr_copy(&ports_eth_addr[port_out], &eth_hdr->s_addr);
+		if (ipv6)
+			eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
+		else
+			eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
+	}
+
+	len += len2;
+
+	if (likely(len < MAX_PKT_BURST)) {
+		qconf->tx_mbufs[port_out].len = (uint16_t)len;
+		return;
+	}
+
+	/* Transmit packets */
+	send_burst(qconf, (uint16_t)len, port_out);
+	qconf->tx_mbufs[port_out].len = 0;
+}
+
+/* main processing loop */
+static int
+main_loop(__attribute__((unused)) void *dummy)
+{
+	struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+	unsigned lcore_id;
+	uint64_t prev_tsc, diff_tsc, cur_tsc;
+	int i, j, nb_rx;
+	uint8_t portid;
+	struct lcore_queue_conf *qconf;
+	const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
+
+	prev_tsc = 0;
+
+	lcore_id = rte_lcore_id();
+	qconf = &lcore_queue_conf[lcore_id];
+
+	if (qconf->n_rx_queue == 0) {
+		RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
+		return 0;
+	}
+
+	RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
+
+	for (i = 0; i < qconf->n_rx_queue; i++) {
+
+		portid = qconf->rx_queue_list[i].portid;
+		RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
+				(int) portid);
+	}
+
+	while (1) {
+
+		cur_tsc = rte_rdtsc();
+
+		/*
+		 * TX burst queue drain
+		 */
+		diff_tsc = cur_tsc - prev_tsc;
+		if (unlikely(diff_tsc > drain_tsc)) {
+
+			/*
+			 * This could be optimized (use queueid instead of
+			 * portid), but it is not called so often
+			 */
+			for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+				if (qconf->tx_mbufs[portid].len == 0)
+					continue;
+				send_burst(&lcore_queue_conf[lcore_id],
+					   qconf->tx_mbufs[portid].len,
+					   portid);
+				qconf->tx_mbufs[portid].len = 0;
+			}
+
+			prev_tsc = cur_tsc;
+		}
+
+		/*
+		 * Read packet from RX queues
+		 */
+		for (i = 0; i < qconf->n_rx_queue; i++) {
+
+			portid = qconf->rx_queue_list[i].portid;
+			nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
+						 MAX_PKT_BURST);
+
+			/* Prefetch first packets */
+			for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
+				rte_prefetch0(rte_pktmbuf_mtod(
+						pkts_burst[j], void *));
+			}
+
+			/* Prefetch and forward already prefetched packets */
+			for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
+				rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
+						j + PREFETCH_OFFSET], void *));
+				l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
+			}
+
+			/* Forward remaining prefetched packets */
+			for (; j < nb_rx; j++) {
+				l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
+			}
+		}
+	}
+}
+
+/* display usage */
+static void
+print_usage(const char *prgname)
+{
+	printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
+	       "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
+	       "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
+	       prgname);
+}
+
+static int
+parse_portmask(const char *portmask)
+{
+	char *end = NULL;
+	unsigned long pm;
+
+	/* parse hexadecimal string */
+	pm = strtoul(portmask, &end, 16);
+	if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+		return -1;
+
+	if (pm == 0)
+		return -1;
+
+	return pm;
+}
+
+static int
+parse_nqueue(const char *q_arg)
+{
+	char *end = NULL;
+	unsigned long n;
+
+	/* parse hexadecimal string */
+	n = strtoul(q_arg, &end, 10);
+	if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+		return -1;
+	if (n == 0)
+		return -1;
+	if (n >= MAX_RX_QUEUE_PER_LCORE)
+		return -1;
+
+	return n;
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+parse_args(int argc, char **argv)
+{
+	int opt, ret;
+	char **argvopt;
+	int option_index;
+	char *prgname = argv[0];
+	static struct option lgopts[] = {
+		{NULL, 0, 0, 0}
+	};
+
+	argvopt = argv;
+
+	while ((opt = getopt_long(argc, argvopt, "p:q:",
+				  lgopts, &option_index)) != EOF) {
+
+		switch (opt) {
+		/* portmask */
+		case 'p':
+			enabled_port_mask = parse_portmask(optarg);
+			if (enabled_port_mask < 0) {
+				printf("invalid portmask\n");
+				print_usage(prgname);
+				return -1;
+			}
+			break;
+
+		/* nqueue */
+		case 'q':
+			rx_queue_per_lcore = parse_nqueue(optarg);
+			if (rx_queue_per_lcore < 0) {
+				printf("invalid queue number\n");
+				print_usage(prgname);
+				return -1;
+			}
+			break;
+
+		/* long options */
+		case 0:
+			print_usage(prgname);
+			return -1;
+
+		default:
+			print_usage(prgname);
+			return -1;
+		}
+	}
+
+	if (enabled_port_mask == 0) {
+		printf("portmask not specified\n");
+		print_usage(prgname);
+		return -1;
+	}
+
+	if (optind >= 0)
+		argv[optind-1] = prgname;
+
+	ret = optind-1;
+	optind = 0; /* reset getopt lib */
+	return ret;
+}
+
+static void
+print_ethaddr(const char *name, struct ether_addr *eth_addr)
+{
+	char buf[ETHER_ADDR_FMT_SIZE];
+	ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
+	printf("%s%s", name, buf);
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+	uint8_t portid, count, all_ports_up, print_flag = 0;
+	struct rte_eth_link link;
+
+	printf("\nChecking link status");
+	fflush(stdout);
+	for (count = 0; count <= MAX_CHECK_TIME; count++) {
+		all_ports_up = 1;
+		for (portid = 0; portid < port_num; portid++) {
+			if ((port_mask & (1 << portid)) == 0)
+				continue;
+			memset(&link, 0, sizeof(link));
+			rte_eth_link_get_nowait(portid, &link);
+			/* print link status if flag set */
+			if (print_flag == 1) {
+				if (link.link_status)
+					printf("Port %d Link Up - speed %u "
+						"Mbps - %s\n", (uint8_t)portid,
+						(unsigned)link.link_speed,
+				(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+					("full-duplex") : ("half-duplex\n"));
+				else
+					printf("Port %d Link Down\n",
+							(uint8_t)portid);
+				continue;
+			}
+			/* clear all_ports_up flag if any link down */
+			if (link.link_status == ETH_LINK_DOWN) {
+				all_ports_up = 0;
+				break;
+			}
+		}
+		/* after finally printing all link status, get out */
+		if (print_flag == 1)
+			break;
+
+		if (all_ports_up == 0) {
+			printf(".");
+			fflush(stdout);
+			rte_delay_ms(CHECK_INTERVAL);
+		}
+
+		/* set the print_flag if all ports up or timeout */
+		if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+			print_flag = 1;
+			printf("\ndone\n");
+		}
+	}
+}
+
+static int
+init_routing_table(void)
+{
+	struct rte_lpm *lpm;
+	struct rte_lpm6 *lpm6;
+	int socket, ret;
+	unsigned i;
+
+	for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+		if (socket_lpm[socket]) {
+			lpm = socket_lpm[socket];
+			/* populate the LPM table */
+			for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
+				ret = rte_lpm_add(lpm,
+					l3fwd_ipv4_route_array[i].ip,
+					l3fwd_ipv4_route_array[i].depth,
+					l3fwd_ipv4_route_array[i].if_out);
+
+				if (ret < 0) {
+					RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
+						"LPM table\n", i);
+					return -1;
+				}
+
+				RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
+						"/%d (port %d)\n",
+					socket,
+					IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
+					l3fwd_ipv4_route_array[i].depth,
+					l3fwd_ipv4_route_array[i].if_out);
+			}
+		}
+
+		if (socket_lpm6[socket]) {
+			lpm6 = socket_lpm6[socket];
+			/* populate the LPM6 table */
+			for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
+				ret = rte_lpm6_add(lpm6,
+					l3fwd_ipv6_route_array[i].ip,
+					l3fwd_ipv6_route_array[i].depth,
+					l3fwd_ipv6_route_array[i].if_out);
+
+				if (ret < 0) {
+					RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
+						"LPM6 table\n", i);
+					return -1;
+				}
+
+				RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
+						"/%d (port %d)\n",
+					socket,
+					IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
+					l3fwd_ipv6_route_array[i].depth,
+					l3fwd_ipv6_route_array[i].if_out);
+			}
+		}
+	}
+	return 0;
+}
+
+static int
+init_mem(void)
+{
+	char buf[PATH_MAX];
+	struct rte_mempool *mp;
+	struct rte_lpm *lpm;
+	struct rte_lpm6 *lpm6;
+	struct rte_lpm_config lpm_config;
+	int socket;
+	unsigned lcore_id;
+
+	/* traverse through lcores and initialize structures on each socket */
+
+	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+
+		if (rte_lcore_is_enabled(lcore_id) == 0)
+			continue;
+
+		socket = rte_lcore_to_socket_id(lcore_id);
+
+		if (socket == SOCKET_ID_ANY)
+			socket = 0;
+
+		if (socket_direct_pool[socket] == NULL) {
+			RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
+					socket);
+			snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
+
+			mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
+				0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
+			if (mp == NULL) {
+				RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
+				return -1;
+			}
+			socket_direct_pool[socket] = mp;
+		}
+
+		if (socket_indirect_pool[socket] == NULL) {
+			RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
+					socket);
+			snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
+
+			mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
+				socket);
+			if (mp == NULL) {
+				RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
+				return -1;
+			}
+			socket_indirect_pool[socket] = mp;
+		}
+
+		if (socket_lpm[socket] == NULL) {
+			RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
+			snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
+
+			lpm_config.max_rules = LPM_MAX_RULES;
+			lpm_config.number_tbl8s = 256;
+			lpm_config.flags = 0;
+
+			lpm = rte_lpm_create(buf, socket, &lpm_config);
+			if (lpm == NULL) {
+				RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
+				return -1;
+			}
+			socket_lpm[socket] = lpm;
+		}
+
+		if (socket_lpm6[socket] == NULL) {
+			RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
+			snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
+
+			lpm6 = rte_lpm6_create("IP_FRAG_LPM6", socket, &lpm6_config);
+			if (lpm6 == NULL) {
+				RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
+				return -1;
+			}
+			socket_lpm6[socket] = lpm6;
+		}
+	}
+
+	return 0;
+}
+
+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;
+	uint16_t queueid = 0;
+	unsigned lcore_id = 0, rx_lcore_id = 0;
+	uint32_t n_tx_queue, nb_lcores;
+	uint8_t portid;
+
+	/* init EAL */
+	ret = rte_eal_init(argc, argv);
+	if (ret < 0)
+		rte_exit(EXIT_FAILURE, "rte_eal_init failed");
+	argc -= ret;
+	argv += ret;
+
+	/* parse application arguments (after the EAL ones) */
+	ret = parse_args(argc, argv);
+	if (ret < 0)
+		rte_exit(EXIT_FAILURE, "Invalid arguments");
+
+	nb_ports = rte_eth_dev_count();
+	if (nb_ports > RTE_MAX_ETHPORTS)
+		nb_ports = RTE_MAX_ETHPORTS;
+	else if (nb_ports == 0)
+		rte_exit(EXIT_FAILURE, "No ports found!\n");
+
+	nb_lcores = rte_lcore_count();
+
+	/* initialize structures (mempools, lpm etc.) */
+	if (init_mem() < 0)
+		rte_panic("Cannot initialize memory structures!\n");
+
+	/* check if portmask has non-existent ports */
+	if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
+		rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
+
+	/* initialize all ports */
+	for (portid = 0; portid < nb_ports; portid++) {
+		/* skip ports that are not enabled */
+		if ((enabled_port_mask & (1 << portid)) == 0) {
+			printf("Skipping disabled port %d\n", portid);
+			continue;
+		}
+
+		qconf = &lcore_queue_conf[rx_lcore_id];
+
+		/* get the lcore_id for this port */
+		while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
+		       qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
+
+			rx_lcore_id ++;
+			if (rx_lcore_id >= RTE_MAX_LCORE)
+				rte_exit(EXIT_FAILURE, "Not enough cores\n");
+
+			qconf = &lcore_queue_conf[rx_lcore_id];
+		}
+
+		socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
+		if (socket == SOCKET_ID_ANY)
+			socket = 0;
+
+		rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
+		rxq->portid = portid;
+		rxq->direct_pool = socket_direct_pool[socket];
+		rxq->indirect_pool = socket_indirect_pool[socket];
+		rxq->lpm = socket_lpm[socket];
+		rxq->lpm6 = socket_lpm6[socket];
+		qconf->n_rx_queue++;
+
+		/* init port */
+		printf("Initializing port %d on lcore %u...", portid,
+		       rx_lcore_id);
+		fflush(stdout);
+
+		n_tx_queue = nb_lcores;
+		if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
+			n_tx_queue = MAX_TX_QUEUE_PER_PORT;
+		ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
+					    &port_conf);
+		if (ret < 0) {
+			printf("\n");
+			rte_exit(EXIT_FAILURE, "Cannot configure device: "
+				"err=%d, port=%d\n",
+				ret, portid);
+		}
+
+		/* init one RX queue */
+		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
+					     socket, NULL,
+					     socket_direct_pool[socket]);
+		if (ret < 0) {
+			printf("\n");
+			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
+				"err=%d, port=%d\n",
+				ret, portid);
+		}
+
+		rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
+		print_ethaddr(" Address:", &ports_eth_addr[portid]);
+		printf("\n");
+
+		/* init one TX queue per couple (lcore,port) */
+		queueid = 0;
+		for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+			if (rte_lcore_is_enabled(lcore_id) == 0)
+				continue;
+
+			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, txconf);
+			if (ret < 0) {
+				printf("\n");
+				rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
+					"err=%d, port=%d\n", ret, portid);
+			}
+
+			qconf = &lcore_queue_conf[lcore_id];
+			qconf->tx_queue_id[portid] = queueid;
+			queueid++;
+		}
+
+		printf("\n");
+	}
+
+	printf("\n");
+
+	/* start ports */
+	for (portid = 0; portid < nb_ports; portid++) {
+		if ((enabled_port_mask & (1 << portid)) == 0) {
+			continue;
+		}
+		/* Start device */
+		ret = rte_eth_dev_start(portid);
+		if (ret < 0)
+			rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
+				ret, portid);
+
+		rte_eth_promiscuous_enable(portid);
+	}
+
+	if (init_routing_table() < 0)
+		rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
+
+	check_all_ports_link_status((uint8_t)nb_ports, enabled_port_mask);
+
+	/* launch per-lcore init on every lcore */
+	rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
+	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+		if (rte_eal_wait_lcore(lcore_id) < 0)
+			return -1;
+	}
+
+	return 0;
+}