apps: use helper to create mbuf pools
[dpdk.git] / examples / l3fwd / main.c
old mode 100755 (executable)
new mode 100644 (file)
index fae1d40..7871038
@@ -1,35 +1,34 @@
 /*-
  *   BSD LICENSE
- * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ *   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 
+ *
+ *   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 
+ *
+ *     * 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 
+ *     * 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 
+ *     * 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 
+ *
+ *   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 <getopt.h>
 
 #include <rte_common.h>
+#include <rte_vect.h>
 #include <rte_byteorder.h>
 #include <rte_log.h>
 #include <rte_memory.h>
 #include <rte_memcpy.h>
 #include <rte_memzone.h>
-#include <rte_tailq.h>
 #include <rte_eal.h>
 #include <rte_per_lcore.h>
 #include <rte_launch.h>
 #include <rte_udp.h>
 #include <rte_string_fns.h>
 
-#include "main.h"
-
 #define APP_LOOKUP_EXACT_MATCH          0
 #define APP_LOOKUP_LPM                  1
 #define DO_RFC_1812_CHECKS
 
-//#define APP_LOOKUP_METHOD             APP_LOOKUP_EXACT_MATCH
 #ifndef APP_LOOKUP_METHOD
 #define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
 #endif
 
+/*
+ *  When set to zero, simple forwaring path is eanbled.
+ *  When set to one, optimized forwarding path is enabled.
+ *  Note that LPM optimisation path uses SSE4.1 instructions.
+ */
+#if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && !defined(__SSE4_1__))
+#define ENABLE_MULTI_BUFFER_OPTIMIZE   0
+#else
+#define ENABLE_MULTI_BUFFER_OPTIMIZE   1
+#endif
+
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 #include <rte_hash.h>
 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 #include <rte_lpm.h>
+#include <rte_lpm6.h>
 #else
 #error "APP_LOOKUP_METHOD set to incorrect value"
 #endif
 
 #define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1
 
-#define MAX_PORTS 32
-
 #define MAX_JUMBO_PKT_LEN  9600
 
 #define IPV6_ADDR_LEN 16
 
 #define MEMPOOL_CACHE_SIZE 256
 
-#define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
+#define MBUF_DATA_SIZE (2048 + RTE_PKTMBUF_HEADROOM)
 
 /*
  * This expression is used to calculate the number of mbufs needed depending on user input, taking
                                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. */
+#define MAX_PKT_BURST     32
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 /*
- * 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.
+ * Try to avoid TX buffering if we have at least MAX_TX_BURST packets to send.
  */
-#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 200000ULL /* around 100us at 2 Ghz */
+#define        MAX_TX_BURST    (MAX_PKT_BURST / 2)
 
 #define NB_SOCKETS 8
 
 /* Configure how many packets ahead to prefetch, when reading packets */
 #define PREFETCH_OFFSET        3
 
+/* Used to mark destination port as 'invalid'. */
+#define        BAD_PORT        ((uint16_t)-1)
+
+#define FWDSTEP        4
+
 /*
  * Configurable number of RX/TX ring descriptors
  */
@@ -164,13 +161,22 @@ 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[MAX_PORTS];
+static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
+
+static __m128i val_eth[RTE_MAX_ETHPORTS];
+
+/* replace first 12B of the ethernet header. */
+#define        MASK_ETH        0x3f
 
 /* mask of enabled ports */
 static uint32_t enabled_port_mask = 0;
 static int promiscuous_on = 0; /**< Ports set in promiscuous mode off by default. */
 static int numa_on = 1; /**< NUMA is enabled by default. */
 
+#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
+static int ipv6 = 0; /**< ipv6 is false by default. */
+#endif
+
 struct mbuf_table {
        uint16_t len;
        struct rte_mbuf *m_table[MAX_PKT_BURST];
@@ -182,7 +188,7 @@ struct lcore_rx_queue {
 } __rte_cache_aligned;
 
 #define MAX_RX_QUEUE_PER_LCORE 16
-#define MAX_TX_QUEUE_PER_PORT MAX_PORTS
+#define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
 #define MAX_RX_QUEUE_PER_PORT 128
 
 #define MAX_LCORE_PARAMS 1024
@@ -211,6 +217,7 @@ static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 
 static struct rte_eth_conf port_conf = {
        .rxmode = {
+               .mq_mode = ETH_MQ_RX_RSS,
                .max_rx_pkt_len = ETHER_MAX_LEN,
                .split_hdr_size = 0,
                .header_split   = 0, /**< Header Split disabled */
@@ -222,7 +229,7 @@ static struct rte_eth_conf port_conf = {
        .rx_adv_conf = {
                .rss_conf = {
                        .rss_key = NULL,
-                       .rss_hf = ETH_RSS_IPV4 | ETH_RSS_IPV6,
+                       .rss_hf = ETH_RSS_IP,
                },
        },
        .txmode = {
@@ -230,29 +237,8 @@ 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];
 
-
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 
 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
@@ -264,21 +250,50 @@ static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 #endif
 
 struct ipv4_5tuple {
-       uint32_t ip_dst;
-       uint32_t ip_src;
-       uint16_t port_dst;
-       uint16_t port_src;
-       uint8_t  proto;
+        uint32_t ip_dst;
+        uint32_t ip_src;
+        uint16_t port_dst;
+        uint16_t port_src;
+        uint8_t  proto;
 } __attribute__((__packed__));
 
+union ipv4_5tuple_host {
+       struct {
+               uint8_t  pad0;
+               uint8_t  proto;
+               uint16_t pad1;
+               uint32_t ip_src;
+               uint32_t ip_dst;
+               uint16_t port_src;
+               uint16_t port_dst;
+       };
+       __m128i xmm;
+};
+
+#define XMM_NUM_IN_IPV6_5TUPLE 3
+
 struct ipv6_5tuple {
-       uint8_t  ip_dst[IPV6_ADDR_LEN];
-       uint8_t  ip_src[IPV6_ADDR_LEN];
-       uint16_t port_dst;
-       uint16_t port_src;
-       uint8_t  proto;
+        uint8_t  ip_dst[IPV6_ADDR_LEN];
+        uint8_t  ip_src[IPV6_ADDR_LEN];
+        uint16_t port_dst;
+        uint16_t port_src;
+        uint8_t  proto;
 } __attribute__((__packed__));
 
+union ipv6_5tuple_host {
+       struct {
+               uint16_t pad0;
+               uint8_t  proto;
+               uint8_t  pad1;
+               uint8_t  ip_src[IPV6_ADDR_LEN];
+               uint8_t  ip_dst[IPV6_ADDR_LEN];
+               uint16_t port_src;
+               uint16_t port_dst;
+               uint64_t reserve;
+       };
+       __m128i xmm[XMM_NUM_IN_IPV6_5TUPLE];
+};
+
 struct ipv4_l3fwd_route {
        struct ipv4_5tuple key;
        uint8_t if_out;
@@ -290,49 +305,117 @@ struct ipv6_l3fwd_route {
 };
 
 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
-       {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
-       {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
-       {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
-       {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
+       {{IPv4(101,0,0,0), IPv4(100,10,0,1),  101, 11, IPPROTO_TCP}, 0},
+       {{IPv4(201,0,0,0), IPv4(200,20,0,1),  102, 12, IPPROTO_TCP}, 1},
+       {{IPv4(111,0,0,0), IPv4(100,30,0,1),  101, 11, IPPROTO_TCP}, 2},
+       {{IPv4(211,0,0,0), IPv4(200,40,0,1),  102, 12, IPPROTO_TCP}, 3},
 };
 
 static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
-       {
-               {
-                       {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-                        0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
-                       {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-                        0x02, 0x1e, 0x67, 0xff, 0xfe, 0x0d, 0xb6, 0x0a},
-                        1, 10, IPPROTO_UDP
-               }, 4
-       },
+       {{
+       {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
+       {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
+       101, 11, IPPROTO_TCP}, 0},
+
+       {{
+       {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
+       {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
+       102, 12, IPPROTO_TCP}, 1},
+
+       {{
+       {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
+       {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
+       101, 11, IPPROTO_TCP}, 2},
+
+       {{
+       {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
+       {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
+       102, 12, IPPROTO_TCP}, 3},
 };
 
 typedef struct rte_hash lookup_struct_t;
 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 static lookup_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 
-#define L3FWD_HASH_ENTRIES     1024
+#ifdef RTE_ARCH_X86_64
+/* default to 4 million hash entries (approx) */
+#define L3FWD_HASH_ENTRIES             1024*1024*4
+#else
+/* 32-bit has less address-space for hugepage memory, limit to 1M entries */
+#define L3FWD_HASH_ENTRIES             1024*1024*1
+#endif
+#define HASH_ENTRY_NUMBER_DEFAULT      4
 
-struct rte_hash_parameters ipv4_l3fwd_hash_params = {
-       .name = "ipv4_l3fwd_hash_0",
-       .entries = L3FWD_HASH_ENTRIES,
-       .bucket_entries = 4,
-       .key_len = sizeof(struct ipv4_5tuple),
-       .hash_func = DEFAULT_HASH_FUNC,
-       .hash_func_init_val = 0,
-       .socket_id = 0,
-};
+static uint32_t hash_entry_number = HASH_ENTRY_NUMBER_DEFAULT;
 
-struct rte_hash_parameters ipv6_l3fwd_hash_params = {
-       .name = "ipv6_l3fwd_hash_0",
-       .entries = L3FWD_HASH_ENTRIES,
-       .bucket_entries = 4,
-       .key_len = sizeof(struct ipv6_5tuple),
-       .hash_func = DEFAULT_HASH_FUNC,
-       .hash_func_init_val = 0,
-       .socket_id = 0,
-};
+static inline uint32_t
+ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
+       uint32_t init_val)
+{
+       const union ipv4_5tuple_host *k;
+       uint32_t t;
+       const uint32_t *p;
+
+       k = data;
+       t = k->proto;
+       p = (const uint32_t *)&k->port_src;
+
+#ifdef RTE_MACHINE_CPUFLAG_SSE4_2
+       init_val = rte_hash_crc_4byte(t, init_val);
+       init_val = rte_hash_crc_4byte(k->ip_src, init_val);
+       init_val = rte_hash_crc_4byte(k->ip_dst, init_val);
+       init_val = rte_hash_crc_4byte(*p, init_val);
+#else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
+       init_val = rte_jhash_1word(t, init_val);
+       init_val = rte_jhash_1word(k->ip_src, init_val);
+       init_val = rte_jhash_1word(k->ip_dst, init_val);
+       init_val = rte_jhash_1word(*p, init_val);
+#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
+       return (init_val);
+}
+
+static inline uint32_t
+ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len, uint32_t init_val)
+{
+       const union ipv6_5tuple_host *k;
+       uint32_t t;
+       const uint32_t *p;
+#ifdef RTE_MACHINE_CPUFLAG_SSE4_2
+       const uint32_t  *ip_src0, *ip_src1, *ip_src2, *ip_src3;
+       const uint32_t  *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3;
+#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
+
+       k = data;
+       t = k->proto;
+       p = (const uint32_t *)&k->port_src;
+
+#ifdef RTE_MACHINE_CPUFLAG_SSE4_2
+       ip_src0 = (const uint32_t *) k->ip_src;
+       ip_src1 = (const uint32_t *)(k->ip_src+4);
+       ip_src2 = (const uint32_t *)(k->ip_src+8);
+       ip_src3 = (const uint32_t *)(k->ip_src+12);
+       ip_dst0 = (const uint32_t *) k->ip_dst;
+       ip_dst1 = (const uint32_t *)(k->ip_dst+4);
+       ip_dst2 = (const uint32_t *)(k->ip_dst+8);
+       ip_dst3 = (const uint32_t *)(k->ip_dst+12);
+       init_val = rte_hash_crc_4byte(t, init_val);
+       init_val = rte_hash_crc_4byte(*ip_src0, init_val);
+       init_val = rte_hash_crc_4byte(*ip_src1, init_val);
+       init_val = rte_hash_crc_4byte(*ip_src2, init_val);
+       init_val = rte_hash_crc_4byte(*ip_src3, init_val);
+       init_val = rte_hash_crc_4byte(*ip_dst0, init_val);
+       init_val = rte_hash_crc_4byte(*ip_dst1, init_val);
+       init_val = rte_hash_crc_4byte(*ip_dst2, init_val);
+       init_val = rte_hash_crc_4byte(*ip_dst3, init_val);
+       init_val = rte_hash_crc_4byte(*p, init_val);
+#else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
+       init_val = rte_jhash_1word(t, init_val);
+       init_val = rte_jhash(k->ip_src, sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
+       init_val = rte_jhash(k->ip_dst, sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
+       init_val = rte_jhash_1word(*p, init_val);
+#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
+       return (init_val);
+}
 
 #define IPV4_L3FWD_NUM_ROUTES \
        (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
@@ -342,6 +425,7 @@ struct rte_hash_parameters ipv6_l3fwd_hash_params = {
 
 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
+
 #endif
 
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
@@ -351,6 +435,12 @@ struct ipv4_l3fwd_route {
        uint8_t  if_out;
 };
 
+struct ipv6_l3fwd_route {
+       uint8_t ip[16];
+       uint8_t  depth;
+       uint8_t  if_out;
+};
+
 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
        {IPv4(1,1,1,0), 24, 0},
        {IPv4(2,1,1,0), 24, 1},
@@ -362,22 +452,43 @@ static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
        {IPv4(8,1,1,0), 24, 7},
 };
 
+static struct ipv6_l3fwd_route ipv6_l3fwd_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 IPV4_L3FWD_NUM_ROUTES \
        (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
+#define IPV6_L3FWD_NUM_ROUTES \
+       (sizeof(ipv6_l3fwd_route_array) / sizeof(ipv6_l3fwd_route_array[0]))
 
-#define IPV4_L3FWD_LPM_MAX_RULES     1024
+#define IPV4_L3FWD_LPM_MAX_RULES         1024
+#define IPV6_L3FWD_LPM_MAX_RULES         1024
+#define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
 
 typedef struct rte_lpm lookup_struct_t;
+typedef struct rte_lpm6 lookup6_struct_t;
 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
+static lookup6_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 #endif
 
 struct lcore_conf {
        uint16_t n_rx_queue;
        struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
-       uint16_t tx_queue_id[MAX_PORTS];
-       struct mbuf_table tx_mbufs[MAX_PORTS];
+       uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
+       struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
        lookup_struct_t * ipv4_lookup_struct;
+#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
+       lookup6_struct_t * ipv6_lookup_struct;
+#else
        lookup_struct_t * ipv6_lookup_struct;
+#endif
 } __rte_cache_aligned;
 
 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
@@ -428,6 +539,84 @@ send_single_packet(struct rte_mbuf *m, uint8_t port)
        return 0;
 }
 
+static inline __attribute__((always_inline)) void
+send_packetsx4(struct lcore_conf *qconf, uint8_t port,
+       struct rte_mbuf *m[], uint32_t num)
+{
+       uint32_t len, j, n;
+
+       len = qconf->tx_mbufs[port].len;
+
+       /*
+        * If TX buffer for that queue is empty, and we have enough packets,
+        * then send them straightway.
+        */
+       if (num >= MAX_TX_BURST && len == 0) {
+               n = rte_eth_tx_burst(port, qconf->tx_queue_id[port], m, num);
+               if (unlikely(n < num)) {
+                       do {
+                               rte_pktmbuf_free(m[n]);
+                       } while (++n < num);
+               }
+               return;
+       }
+
+       /*
+        * Put packets into TX buffer for that queue.
+        */
+
+       n = len + num;
+       n = (n > MAX_PKT_BURST) ? MAX_PKT_BURST - len : num;
+
+       j = 0;
+       switch (n % FWDSTEP) {
+       while (j < n) {
+       case 0:
+               qconf->tx_mbufs[port].m_table[len + j] = m[j];
+               j++;
+       case 3:
+               qconf->tx_mbufs[port].m_table[len + j] = m[j];
+               j++;
+       case 2:
+               qconf->tx_mbufs[port].m_table[len + j] = m[j];
+               j++;
+       case 1:
+               qconf->tx_mbufs[port].m_table[len + j] = m[j];
+               j++;
+       }
+       }
+
+       len += n;
+
+       /* enough pkts to be sent */
+       if (unlikely(len == MAX_PKT_BURST)) {
+
+               send_burst(qconf, MAX_PKT_BURST, port);
+
+               /* copy rest of the packets into the TX buffer. */
+               len = num - n;
+               j = 0;
+               switch (len % FWDSTEP) {
+               while (j < len) {
+               case 0:
+                       qconf->tx_mbufs[port].m_table[j] = m[n + j];
+                       j++;
+               case 3:
+                       qconf->tx_mbufs[port].m_table[j] = m[n + j];
+                       j++;
+               case 2:
+                       qconf->tx_mbufs[port].m_table[j] = m[n + j];
+                       j++;
+               case 1:
+                       qconf->tx_mbufs[port].m_table[j] = m[n + j];
+                       j++;
+               }
+               }
+       }
+
+       qconf->tx_mbufs[port].len = len;
+}
+
 #ifdef DO_RFC_1812_CHECKS
 static inline int
 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
@@ -470,92 +659,41 @@ is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 #endif
 
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
-static void
-print_ipv4_key(struct ipv4_5tuple key)
-{
-       printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n",
-                       (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto);
-}
-static void
-print_ipv6_key(struct ipv6_5tuple key)
-{
-       printf( "IP dst = " IPv6_BYTES_FMT ", IP src = " IPv6_BYTES_FMT ", "
-               "port dst = %d, port src = %d, proto = %d\n",
-               IPv6_BYTES(key.ip_dst), IPv6_BYTES(key.ip_src),
-               key.port_dst, key.port_src, key.proto);
-}
 
+static __m128i mask0;
+static __m128i mask1;
+static __m128i mask2;
 static inline uint8_t
-get_ipv4_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * ipv4_l3fwd_lookup_struct)
+get_ipv4_dst_port(void *ipv4_hdr, uint8_t portid, lookup_struct_t * ipv4_l3fwd_lookup_struct)
 {
-       struct ipv4_5tuple key;
-       struct tcp_hdr *tcp;
-       struct udp_hdr *udp;
        int ret = 0;
+       union ipv4_5tuple_host key;
 
-       key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
-       key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
-       key.proto = ipv4_hdr->next_proto_id;
-
-       switch (ipv4_hdr->next_proto_id) {
-       case IPPROTO_TCP:
-               tcp = (struct tcp_hdr *)((unsigned char *) ipv4_hdr +
-                                       sizeof(struct ipv4_hdr));
-               key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
-               key.port_src = rte_be_to_cpu_16(tcp->src_port);
-               break;
-
-       case IPPROTO_UDP:
-               udp = (struct udp_hdr *)((unsigned char *) ipv4_hdr +
-                                       sizeof(struct ipv4_hdr));
-               key.port_dst = rte_be_to_cpu_16(udp->dst_port);
-               key.port_src = rte_be_to_cpu_16(udp->src_port);
-               break;
-
-       default:
-               key.port_dst = 0;
-               key.port_src = 0;
-               break;
-       }
-
+       ipv4_hdr = (uint8_t *)ipv4_hdr + offsetof(struct ipv4_hdr, time_to_live);
+       __m128i data = _mm_loadu_si128((__m128i*)(ipv4_hdr));
+       /* Get 5 tuple: dst port, src port, dst IP address, src IP address and protocol */
+       key.xmm = _mm_and_si128(data, mask0);
        /* Find destination port */
        ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
        return (uint8_t)((ret < 0)? portid : ipv4_l3fwd_out_if[ret]);
 }
 
 static inline uint8_t
-get_ipv6_dst_port(struct ipv6_hdr *ipv6_hdr,  uint8_t portid, lookup_struct_t * ipv6_l3fwd_lookup_struct)
+get_ipv6_dst_port(void *ipv6_hdr,  uint8_t portid, lookup_struct_t * ipv6_l3fwd_lookup_struct)
 {
-       struct ipv6_5tuple key;
-       struct tcp_hdr *tcp;
-       struct udp_hdr *udp;
        int ret = 0;
-
-       memcpy(key.ip_dst, ipv6_hdr->dst_addr, IPV6_ADDR_LEN);
-       memcpy(key.ip_src, ipv6_hdr->src_addr, IPV6_ADDR_LEN);
-
-       key.proto = ipv6_hdr->proto;
-
-       switch (ipv6_hdr->proto) {
-       case IPPROTO_TCP:
-               tcp = (struct tcp_hdr *)((unsigned char *) ipv6_hdr +
-                                       sizeof(struct ipv6_hdr));
-               key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
-               key.port_src = rte_be_to_cpu_16(tcp->src_port);
-               break;
-
-       case IPPROTO_UDP:
-               udp = (struct udp_hdr *)((unsigned char *) ipv6_hdr +
-                                       sizeof(struct ipv6_hdr));
-               key.port_dst = rte_be_to_cpu_16(udp->dst_port);
-               key.port_src = rte_be_to_cpu_16(udp->src_port);
-               break;
-
-       default:
-               key.port_dst = 0;
-               key.port_src = 0;
-               break;
-       }
+       union ipv6_5tuple_host key;
+
+       ipv6_hdr = (uint8_t *)ipv6_hdr + offsetof(struct ipv6_hdr, payload_len);
+       __m128i data0 = _mm_loadu_si128((__m128i*)(ipv6_hdr));
+       __m128i data1 = _mm_loadu_si128((__m128i*)(((uint8_t*)ipv6_hdr)+sizeof(__m128i)));
+       __m128i data2 = _mm_loadu_si128((__m128i*)(((uint8_t*)ipv6_hdr)+sizeof(__m128i)+sizeof(__m128i)));
+       /* Get part of 5 tuple: src IP address lower 96 bits and protocol */
+       key.xmm[0] = _mm_and_si128(data0, mask1);
+       /* Get part of 5 tuple: dst IP address lower 96 bits and src IP address higher 32 bits */
+       key.xmm[1] = data1;
+       /* Get part of 5 tuple: dst port and src port and dst IP address higher 32 bits */
+       key.xmm[2] = _mm_and_si128(data2, mask2);
 
        /* Find destination port */
        ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
@@ -564,18 +702,252 @@ get_ipv6_dst_port(struct ipv6_hdr *ipv6_hdr,  uint8_t portid, lookup_struct_t *
 #endif
 
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
+
 static inline uint8_t
-get_ipv4_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * ipv4_l3fwd_lookup_struct)
+get_ipv4_dst_port(void *ipv4_hdr,  uint8_t portid, lookup_struct_t * ipv4_l3fwd_lookup_struct)
 {
        uint8_t next_hop;
 
        return (uint8_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
-                       rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
+               rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
+               &next_hop) == 0) ? next_hop : portid);
+}
+
+static inline uint8_t
+get_ipv6_dst_port(void *ipv6_hdr,  uint8_t portid, lookup6_struct_t * ipv6_l3fwd_lookup_struct)
+{
+       uint8_t next_hop;
+       return (uint8_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
+                       ((struct ipv6_hdr*)ipv6_hdr)->dst_addr, &next_hop) == 0)?
                        next_hop : portid);
 }
 #endif
 
+static inline void l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid,
+       struct lcore_conf *qconf)  __attribute__((unused));
+
+#if ((APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH) && \
+       (ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
+
+#define MASK_ALL_PKTS    0xf
+#define EXECLUDE_1ST_PKT 0xe
+#define EXECLUDE_2ND_PKT 0xd
+#define EXECLUDE_3RD_PKT 0xb
+#define EXECLUDE_4TH_PKT 0x7
+
 static inline void
+simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *qconf)
+{
+       struct ether_hdr *eth_hdr[4];
+       struct ipv4_hdr *ipv4_hdr[4];
+       void *d_addr_bytes[4];
+       uint8_t dst_port[4];
+       int32_t ret[4];
+       union ipv4_5tuple_host key[4];
+       __m128i data[4];
+
+       eth_hdr[0] = rte_pktmbuf_mtod(m[0], struct ether_hdr *);
+       eth_hdr[1] = rte_pktmbuf_mtod(m[1], struct ether_hdr *);
+       eth_hdr[2] = rte_pktmbuf_mtod(m[2], struct ether_hdr *);
+       eth_hdr[3] = rte_pktmbuf_mtod(m[3], struct ether_hdr *);
+
+       /* Handle IPv4 headers.*/
+       ipv4_hdr[0] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[0], unsigned char *) +
+                       sizeof(struct ether_hdr));
+       ipv4_hdr[1] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[1], unsigned char *) +
+                       sizeof(struct ether_hdr));
+       ipv4_hdr[2] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[2], unsigned char *) +
+                       sizeof(struct ether_hdr));
+       ipv4_hdr[3] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[3], unsigned char *) +
+                       sizeof(struct ether_hdr));
+
+#ifdef DO_RFC_1812_CHECKS
+       /* Check to make sure the packet is valid (RFC1812) */
+       uint8_t valid_mask = MASK_ALL_PKTS;
+       if (is_valid_ipv4_pkt(ipv4_hdr[0], m[0]->pkt_len) < 0) {
+               rte_pktmbuf_free(m[0]);
+               valid_mask &= EXECLUDE_1ST_PKT;
+       }
+       if (is_valid_ipv4_pkt(ipv4_hdr[1], m[1]->pkt_len) < 0) {
+               rte_pktmbuf_free(m[1]);
+               valid_mask &= EXECLUDE_2ND_PKT;
+       }
+       if (is_valid_ipv4_pkt(ipv4_hdr[2], m[2]->pkt_len) < 0) {
+               rte_pktmbuf_free(m[2]);
+               valid_mask &= EXECLUDE_3RD_PKT;
+       }
+       if (is_valid_ipv4_pkt(ipv4_hdr[3], m[3]->pkt_len) < 0) {
+               rte_pktmbuf_free(m[3]);
+               valid_mask &= EXECLUDE_4TH_PKT;
+       }
+       if (unlikely(valid_mask != MASK_ALL_PKTS)) {
+               if (valid_mask == 0){
+                       return;
+               } else {
+                       uint8_t i = 0;
+                       for (i = 0; i < 4; i++) {
+                               if ((0x1 << i) & valid_mask) {
+                                       l3fwd_simple_forward(m[i], portid, qconf);
+                               }
+                       }
+                       return;
+               }
+       }
+#endif // End of #ifdef DO_RFC_1812_CHECKS
+
+       data[0] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[0], unsigned char *) +
+               sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+       data[1] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[1], unsigned char *) +
+               sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+       data[2] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[2], unsigned char *) +
+               sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+       data[3] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[3], unsigned char *) +
+               sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+
+       key[0].xmm = _mm_and_si128(data[0], mask0);
+       key[1].xmm = _mm_and_si128(data[1], mask0);
+       key[2].xmm = _mm_and_si128(data[2], mask0);
+       key[3].xmm = _mm_and_si128(data[3], mask0);
+
+       const void *key_array[4] = {&key[0], &key[1], &key[2],&key[3]};
+       rte_hash_lookup_multi(qconf->ipv4_lookup_struct, &key_array[0], 4, ret);
+       dst_port[0] = (uint8_t) ((ret[0] < 0) ? portid : ipv4_l3fwd_out_if[ret[0]]);
+       dst_port[1] = (uint8_t) ((ret[1] < 0) ? portid : ipv4_l3fwd_out_if[ret[1]]);
+       dst_port[2] = (uint8_t) ((ret[2] < 0) ? portid : ipv4_l3fwd_out_if[ret[2]]);
+       dst_port[3] = (uint8_t) ((ret[3] < 0) ? portid : ipv4_l3fwd_out_if[ret[3]]);
+
+       if (dst_port[0] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[0]) == 0)
+               dst_port[0] = portid;
+       if (dst_port[1] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[1]) == 0)
+               dst_port[1] = portid;
+       if (dst_port[2] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[2]) == 0)
+               dst_port[2] = portid;
+       if (dst_port[3] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[3]) == 0)
+               dst_port[3] = portid;
+
+       /* 02:00:00:00:00:xx */
+       d_addr_bytes[0] = &eth_hdr[0]->d_addr.addr_bytes[0];
+       d_addr_bytes[1] = &eth_hdr[1]->d_addr.addr_bytes[0];
+       d_addr_bytes[2] = &eth_hdr[2]->d_addr.addr_bytes[0];
+       d_addr_bytes[3] = &eth_hdr[3]->d_addr.addr_bytes[0];
+       *((uint64_t *)d_addr_bytes[0]) = 0x000000000002 + ((uint64_t)dst_port[0] << 40);
+       *((uint64_t *)d_addr_bytes[1]) = 0x000000000002 + ((uint64_t)dst_port[1] << 40);
+       *((uint64_t *)d_addr_bytes[2]) = 0x000000000002 + ((uint64_t)dst_port[2] << 40);
+       *((uint64_t *)d_addr_bytes[3]) = 0x000000000002 + ((uint64_t)dst_port[3] << 40);
+
+#ifdef DO_RFC_1812_CHECKS
+       /* Update time to live and header checksum */
+       --(ipv4_hdr[0]->time_to_live);
+       --(ipv4_hdr[1]->time_to_live);
+       --(ipv4_hdr[2]->time_to_live);
+       --(ipv4_hdr[3]->time_to_live);
+       ++(ipv4_hdr[0]->hdr_checksum);
+       ++(ipv4_hdr[1]->hdr_checksum);
+       ++(ipv4_hdr[2]->hdr_checksum);
+       ++(ipv4_hdr[3]->hdr_checksum);
+#endif
+
+       /* src addr */
+       ether_addr_copy(&ports_eth_addr[dst_port[0]], &eth_hdr[0]->s_addr);
+       ether_addr_copy(&ports_eth_addr[dst_port[1]], &eth_hdr[1]->s_addr);
+       ether_addr_copy(&ports_eth_addr[dst_port[2]], &eth_hdr[2]->s_addr);
+       ether_addr_copy(&ports_eth_addr[dst_port[3]], &eth_hdr[3]->s_addr);
+
+       send_single_packet(m[0], (uint8_t)dst_port[0]);
+       send_single_packet(m[1], (uint8_t)dst_port[1]);
+       send_single_packet(m[2], (uint8_t)dst_port[2]);
+       send_single_packet(m[3], (uint8_t)dst_port[3]);
+
+}
+
+static inline void get_ipv6_5tuple(struct rte_mbuf* m0, __m128i mask0, __m128i mask1,
+                                union ipv6_5tuple_host * key)
+{
+        __m128i tmpdata0 = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m0, unsigned char *)
+                       + sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)));
+        __m128i tmpdata1 = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m0, unsigned char *)
+                       + sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)
+                       +  sizeof(__m128i)));
+        __m128i tmpdata2 = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m0, unsigned char *)
+                       + sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)
+                       + sizeof(__m128i) + sizeof(__m128i)));
+        key->xmm[0] = _mm_and_si128(tmpdata0, mask0);
+        key->xmm[1] = tmpdata1;
+        key->xmm[2] = _mm_and_si128(tmpdata2, mask1);
+       return;
+}
+
+static inline void
+simple_ipv6_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *qconf)
+{
+       struct ether_hdr *eth_hdr[4];
+       __attribute__((unused)) struct ipv6_hdr *ipv6_hdr[4];
+       void *d_addr_bytes[4];
+       uint8_t dst_port[4];
+       int32_t ret[4];
+       union ipv6_5tuple_host key[4];
+
+       eth_hdr[0] = rte_pktmbuf_mtod(m[0], struct ether_hdr *);
+       eth_hdr[1] = rte_pktmbuf_mtod(m[1], struct ether_hdr *);
+       eth_hdr[2] = rte_pktmbuf_mtod(m[2], struct ether_hdr *);
+       eth_hdr[3] = rte_pktmbuf_mtod(m[3], struct ether_hdr *);
+
+       /* Handle IPv6 headers.*/
+       ipv6_hdr[0] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[0], unsigned char *) +
+                       sizeof(struct ether_hdr));
+       ipv6_hdr[1] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[1], unsigned char *) +
+                       sizeof(struct ether_hdr));
+       ipv6_hdr[2] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[2], unsigned char *) +
+                       sizeof(struct ether_hdr));
+       ipv6_hdr[3] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[3], unsigned char *) +
+                       sizeof(struct ether_hdr));
+
+       get_ipv6_5tuple(m[0], mask1, mask2, &key[0]);
+       get_ipv6_5tuple(m[1], mask1, mask2, &key[1]);
+       get_ipv6_5tuple(m[2], mask1, mask2, &key[2]);
+       get_ipv6_5tuple(m[3], mask1, mask2, &key[3]);
+
+       const void *key_array[4] = {&key[0], &key[1], &key[2],&key[3]};
+       rte_hash_lookup_multi(qconf->ipv6_lookup_struct, &key_array[0], 4, ret);
+       dst_port[0] = (uint8_t) ((ret[0] < 0)? portid:ipv6_l3fwd_out_if[ret[0]]);
+       dst_port[1] = (uint8_t) ((ret[1] < 0)? portid:ipv6_l3fwd_out_if[ret[1]]);
+       dst_port[2] = (uint8_t) ((ret[2] < 0)? portid:ipv6_l3fwd_out_if[ret[2]]);
+       dst_port[3] = (uint8_t) ((ret[3] < 0)? portid:ipv6_l3fwd_out_if[ret[3]]);
+
+       if (dst_port[0] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[0]) == 0)
+               dst_port[0] = portid;
+       if (dst_port[1] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[1]) == 0)
+               dst_port[1] = portid;
+       if (dst_port[2] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[2]) == 0)
+               dst_port[2] = portid;
+       if (dst_port[3] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[3]) == 0)
+               dst_port[3] = portid;
+
+       /* 02:00:00:00:00:xx */
+       d_addr_bytes[0] = &eth_hdr[0]->d_addr.addr_bytes[0];
+       d_addr_bytes[1] = &eth_hdr[1]->d_addr.addr_bytes[0];
+       d_addr_bytes[2] = &eth_hdr[2]->d_addr.addr_bytes[0];
+       d_addr_bytes[3] = &eth_hdr[3]->d_addr.addr_bytes[0];
+       *((uint64_t *)d_addr_bytes[0]) = 0x000000000002 + ((uint64_t)dst_port[0] << 40);
+       *((uint64_t *)d_addr_bytes[1]) = 0x000000000002 + ((uint64_t)dst_port[1] << 40);
+       *((uint64_t *)d_addr_bytes[2]) = 0x000000000002 + ((uint64_t)dst_port[2] << 40);
+       *((uint64_t *)d_addr_bytes[3]) = 0x000000000002 + ((uint64_t)dst_port[3] << 40);
+
+       /* src addr */
+       ether_addr_copy(&ports_eth_addr[dst_port[0]], &eth_hdr[0]->s_addr);
+       ether_addr_copy(&ports_eth_addr[dst_port[1]], &eth_hdr[1]->s_addr);
+       ether_addr_copy(&ports_eth_addr[dst_port[2]], &eth_hdr[2]->s_addr);
+       ether_addr_copy(&ports_eth_addr[dst_port[3]], &eth_hdr[3]->s_addr);
+
+       send_single_packet(m[0], (uint8_t)dst_port[0]);
+       send_single_packet(m[1], (uint8_t)dst_port[1]);
+       send_single_packet(m[2], (uint8_t)dst_port[2]);
+       send_single_packet(m[3], (uint8_t)dst_port[3]);
+
+}
+#endif /* APP_LOOKUP_METHOD */
+
+static inline __attribute__((always_inline)) void
 l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qconf)
 {
        struct ether_hdr *eth_hdr;
@@ -592,19 +964,22 @@ l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qcon
 
 #ifdef DO_RFC_1812_CHECKS
                /* Check to make sure the packet is valid (RFC1812) */
-               if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt.pkt_len) < 0) {
+               if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
                        rte_pktmbuf_free(m);
                        return;
                }
 #endif
 
-               dst_port = get_ipv4_dst_port(ipv4_hdr, portid, qconf->ipv4_lookup_struct);
-               if (dst_port >= MAX_PORTS || (enabled_port_mask & 1 << dst_port) == 0)
+                dst_port = get_ipv4_dst_port(ipv4_hdr, portid,
+                       qconf->ipv4_lookup_struct);
+               if (dst_port >= RTE_MAX_ETHPORTS ||
+                               (enabled_port_mask & 1 << dst_port) == 0)
                        dst_port = portid;
 
                /* 02:00:00:00:00:xx */
                d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
-               *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)dst_port << 40);
+               *((uint64_t *)d_addr_bytes) = ETHER_LOCAL_ADMIN_ADDR +
+                       ((uint64_t)dst_port << 40);
 
 #ifdef DO_RFC_1812_CHECKS
                /* Update time to live and header checksum */
@@ -616,10 +991,9 @@ l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qcon
                ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 
                send_single_packet(m, dst_port);
-       }
-       else {
+
+       else {
                /* Handle IPv6 headers.*/
-#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
                struct ipv6_hdr *ipv6_hdr;
 
                ipv6_hdr = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m, unsigned char *) +
@@ -627,43 +1001,427 @@ l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qcon
 
                dst_port = get_ipv6_dst_port(ipv6_hdr, portid, qconf->ipv6_lookup_struct);
 
-               if (dst_port >= MAX_PORTS || (enabled_port_mask & 1 << dst_port) == 0)
+               if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
                        dst_port = portid;
 
                /* 02:00:00:00:00:xx */
                d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
-               *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)dst_port << 40);
+               *((uint64_t *)d_addr_bytes) = ETHER_LOCAL_ADMIN_ADDR +
+                       ((uint64_t)dst_port << 40);
 
                /* src addr */
                ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 
                send_single_packet(m, dst_port);
+       }
+
+}
+
+#ifdef DO_RFC_1812_CHECKS
+
+#define        IPV4_MIN_VER_IHL        0x45
+#define        IPV4_MAX_VER_IHL        0x4f
+#define        IPV4_MAX_VER_IHL_DIFF   (IPV4_MAX_VER_IHL - IPV4_MIN_VER_IHL)
+
+/* Minimum value of IPV4 total length (20B) in network byte order. */
+#define        IPV4_MIN_LEN_BE (sizeof(struct ipv4_hdr) << 8)
+
+/*
+ * From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2:
+ * - The IP version number must be 4.
+ * - The IP header length field must be large enough to hold the
+ *    minimum length legal IP datagram (20 bytes = 5 words).
+ * - The IP total length field must be large enough to hold the IP
+ *   datagram header, whose length is specified in the IP header length
+ *   field.
+ * If we encounter invalid IPV4 packet, then set destination port for it
+ * to BAD_PORT value.
+ */
+static inline __attribute__((always_inline)) void
+rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint16_t *dp, uint32_t flags)
+{
+       uint8_t ihl;
+
+       if ((flags & PKT_RX_IPV4_HDR) != 0) {
+
+               ihl = ipv4_hdr->version_ihl - IPV4_MIN_VER_IHL;
+
+               ipv4_hdr->time_to_live--;
+               ipv4_hdr->hdr_checksum++;
+
+               if (ihl > IPV4_MAX_VER_IHL_DIFF ||
+                               ((uint8_t)ipv4_hdr->total_length == 0 &&
+                               ipv4_hdr->total_length < IPV4_MIN_LEN_BE)) {
+                       dp[0] = BAD_PORT;
+               }
+       }
+}
+
 #else
-               /* We don't currently handle IPv6 packets in LPM mode. */
-               rte_pktmbuf_free(m);
-#endif
+#define        rfc1812_process(mb, dp) do { } while (0)
+#endif /* DO_RFC_1812_CHECKS */
+
+
+#if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && \
+       (ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
+
+static inline __attribute__((always_inline)) uint16_t
+get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
+       uint32_t dst_ipv4, uint8_t portid)
+{
+       uint8_t next_hop;
+       struct ipv6_hdr *ipv6_hdr;
+       struct ether_hdr *eth_hdr;
+
+       if (pkt->ol_flags & PKT_RX_IPV4_HDR) {
+               if (rte_lpm_lookup(qconf->ipv4_lookup_struct, dst_ipv4,
+                               &next_hop) != 0)
+                       next_hop = portid;
+       } else if (pkt->ol_flags & PKT_RX_IPV6_HDR) {
+               eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
+               ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
+               if (rte_lpm6_lookup(qconf->ipv6_lookup_struct,
+                               ipv6_hdr->dst_addr, &next_hop) != 0)
+                       next_hop = portid;
+       } else {
+               next_hop = portid;
        }
 
+       return next_hop;
 }
 
+static inline void
+process_packet(struct lcore_conf *qconf, struct rte_mbuf *pkt,
+       uint16_t *dst_port, uint8_t portid)
+{
+       struct ether_hdr *eth_hdr;
+       struct ipv4_hdr *ipv4_hdr;
+       uint32_t dst_ipv4;
+       uint16_t dp;
+       __m128i te, ve;
+
+       eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
+       ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
+
+       dst_ipv4 = ipv4_hdr->dst_addr;
+       dst_ipv4 = rte_be_to_cpu_32(dst_ipv4);
+       dp = get_dst_port(qconf, pkt, dst_ipv4, portid);
+
+       te = _mm_load_si128((__m128i *)eth_hdr);
+       ve = val_eth[dp];
+
+       dst_port[0] = dp;
+       rfc1812_process(ipv4_hdr, dst_port, pkt->ol_flags);
+
+       te =  _mm_blend_epi16(te, ve, MASK_ETH);
+       _mm_store_si128((__m128i *)eth_hdr, te);
+}
+
+/*
+ * Read ol_flags and destination IPV4 addresses from 4 mbufs.
+ */
+static inline void
+processx4_step1(struct rte_mbuf *pkt[FWDSTEP], __m128i *dip, uint32_t *flag)
+{
+       struct ipv4_hdr *ipv4_hdr;
+       struct ether_hdr *eth_hdr;
+       uint32_t x0, x1, x2, x3;
+
+       eth_hdr = rte_pktmbuf_mtod(pkt[0], struct ether_hdr *);
+       ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
+       x0 = ipv4_hdr->dst_addr;
+       flag[0] = pkt[0]->ol_flags & PKT_RX_IPV4_HDR;
+
+       eth_hdr = rte_pktmbuf_mtod(pkt[1], struct ether_hdr *);
+       ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
+       x1 = ipv4_hdr->dst_addr;
+       flag[0] &= pkt[1]->ol_flags;
+
+       eth_hdr = rte_pktmbuf_mtod(pkt[2], struct ether_hdr *);
+       ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
+       x2 = ipv4_hdr->dst_addr;
+       flag[0] &= pkt[2]->ol_flags;
+
+       eth_hdr = rte_pktmbuf_mtod(pkt[3], struct ether_hdr *);
+       ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
+       x3 = ipv4_hdr->dst_addr;
+       flag[0] &= pkt[3]->ol_flags;
+
+       dip[0] = _mm_set_epi32(x3, x2, x1, x0);
+}
+
+/*
+ * Lookup into LPM for destination port.
+ * If lookup fails, use incoming port (portid) as destination port.
+ */
+static inline void
+processx4_step2(const struct lcore_conf *qconf, __m128i dip, uint32_t flag,
+       uint8_t portid, struct rte_mbuf *pkt[FWDSTEP], uint16_t dprt[FWDSTEP])
+{
+       rte_xmm_t dst;
+       const  __m128i bswap_mask = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11,
+                                               4, 5, 6, 7, 0, 1, 2, 3);
+
+       /* Byte swap 4 IPV4 addresses. */
+       dip = _mm_shuffle_epi8(dip, bswap_mask);
+
+       /* if all 4 packets are IPV4. */
+       if (likely(flag != 0)) {
+               rte_lpm_lookupx4(qconf->ipv4_lookup_struct, dip, dprt, portid);
+       } else {
+               dst.x = dip;
+               dprt[0] = get_dst_port(qconf, pkt[0], dst.u32[0], portid);
+               dprt[1] = get_dst_port(qconf, pkt[1], dst.u32[1], portid);
+               dprt[2] = get_dst_port(qconf, pkt[2], dst.u32[2], portid);
+               dprt[3] = get_dst_port(qconf, pkt[3], dst.u32[3], portid);
+       }
+}
+
+/*
+ * Update source and destination MAC addresses in the ethernet header.
+ * Perform RFC1812 checks and updates for IPV4 packets.
+ */
+static inline void
+processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[FWDSTEP])
+{
+       __m128i te[FWDSTEP];
+       __m128i ve[FWDSTEP];
+       __m128i *p[FWDSTEP];
+
+       p[0] = (rte_pktmbuf_mtod(pkt[0], __m128i *));
+       p[1] = (rte_pktmbuf_mtod(pkt[1], __m128i *));
+       p[2] = (rte_pktmbuf_mtod(pkt[2], __m128i *));
+       p[3] = (rte_pktmbuf_mtod(pkt[3], __m128i *));
+
+       ve[0] = val_eth[dst_port[0]];
+       te[0] = _mm_load_si128(p[0]);
+
+       ve[1] = val_eth[dst_port[1]];
+       te[1] = _mm_load_si128(p[1]);
+
+       ve[2] = val_eth[dst_port[2]];
+       te[2] = _mm_load_si128(p[2]);
+
+       ve[3] = val_eth[dst_port[3]];
+       te[3] = _mm_load_si128(p[3]);
+
+       /* Update first 12 bytes, keep rest bytes intact. */
+       te[0] =  _mm_blend_epi16(te[0], ve[0], MASK_ETH);
+       te[1] =  _mm_blend_epi16(te[1], ve[1], MASK_ETH);
+       te[2] =  _mm_blend_epi16(te[2], ve[2], MASK_ETH);
+       te[3] =  _mm_blend_epi16(te[3], ve[3], MASK_ETH);
+
+       _mm_store_si128(p[0], te[0]);
+       _mm_store_si128(p[1], te[1]);
+       _mm_store_si128(p[2], te[2]);
+       _mm_store_si128(p[3], te[3]);
+
+       rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[0] + 1),
+               &dst_port[0], pkt[0]->ol_flags);
+       rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[1] + 1),
+               &dst_port[1], pkt[1]->ol_flags);
+       rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[2] + 1),
+               &dst_port[2], pkt[2]->ol_flags);
+       rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[3] + 1),
+               &dst_port[3], pkt[3]->ol_flags);
+}
+
+/*
+ * We group consecutive packets with the same destionation port into one burst.
+ * To avoid extra latency this is done together with some other packet
+ * processing, but after we made a final decision about packet's destination.
+ * To do this we maintain:
+ * pnum - array of number of consecutive packets with the same dest port for
+ * each packet in the input burst.
+ * lp - pointer to the last updated element in the pnum.
+ * dlp - dest port value lp corresponds to.
+ */
+
+#define        GRPSZ   (1 << FWDSTEP)
+#define        GRPMSK  (GRPSZ - 1)
+
+#define GROUP_PORT_STEP(dlp, dcp, lp, pn, idx) do { \
+       if (likely((dlp) == (dcp)[(idx)])) {         \
+               (lp)[0]++;                           \
+       } else {                                     \
+               (dlp) = (dcp)[idx];                  \
+               (lp) = (pn) + (idx);                 \
+               (lp)[0] = 1;                         \
+       }                                            \
+} while (0)
+
+/*
+ * Group consecutive packets with the same destination port in bursts of 4.
+ * Suppose we have array of destionation ports:
+ * dst_port[] = {a, b, c, d,, e, ... }
+ * dp1 should contain: <a, b, c, d>, dp2: <b, c, d, e>.
+ * We doing 4 comparisions at once and the result is 4 bit mask.
+ * This mask is used as an index into prebuild array of pnum values.
+ */
+static inline uint16_t *
+port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, __m128i dp1, __m128i dp2)
+{
+       static const struct {
+               uint64_t pnum; /* prebuild 4 values for pnum[]. */
+               int32_t  idx;  /* index for new last updated elemnet. */
+               uint16_t lpv;  /* add value to the last updated element. */
+       } gptbl[GRPSZ] = {
+       {
+               /* 0: a != b, b != c, c != d, d != e */
+               .pnum = UINT64_C(0x0001000100010001),
+               .idx = 4,
+               .lpv = 0,
+       },
+       {
+               /* 1: a == b, b != c, c != d, d != e */
+               .pnum = UINT64_C(0x0001000100010002),
+               .idx = 4,
+               .lpv = 1,
+       },
+       {
+               /* 2: a != b, b == c, c != d, d != e */
+               .pnum = UINT64_C(0x0001000100020001),
+               .idx = 4,
+               .lpv = 0,
+       },
+       {
+               /* 3: a == b, b == c, c != d, d != e */
+               .pnum = UINT64_C(0x0001000100020003),
+               .idx = 4,
+               .lpv = 2,
+       },
+       {
+               /* 4: a != b, b != c, c == d, d != e */
+               .pnum = UINT64_C(0x0001000200010001),
+               .idx = 4,
+               .lpv = 0,
+       },
+       {
+               /* 5: a == b, b != c, c == d, d != e */
+               .pnum = UINT64_C(0x0001000200010002),
+               .idx = 4,
+               .lpv = 1,
+       },
+       {
+               /* 6: a != b, b == c, c == d, d != e */
+               .pnum = UINT64_C(0x0001000200030001),
+               .idx = 4,
+               .lpv = 0,
+       },
+       {
+               /* 7: a == b, b == c, c == d, d != e */
+               .pnum = UINT64_C(0x0001000200030004),
+               .idx = 4,
+               .lpv = 3,
+       },
+       {
+               /* 8: a != b, b != c, c != d, d == e */
+               .pnum = UINT64_C(0x0002000100010001),
+               .idx = 3,
+               .lpv = 0,
+       },
+       {
+               /* 9: a == b, b != c, c != d, d == e */
+               .pnum = UINT64_C(0x0002000100010002),
+               .idx = 3,
+               .lpv = 1,
+       },
+       {
+               /* 0xa: a != b, b == c, c != d, d == e */
+               .pnum = UINT64_C(0x0002000100020001),
+               .idx = 3,
+               .lpv = 0,
+       },
+       {
+               /* 0xb: a == b, b == c, c != d, d == e */
+               .pnum = UINT64_C(0x0002000100020003),
+               .idx = 3,
+               .lpv = 2,
+       },
+       {
+               /* 0xc: a != b, b != c, c == d, d == e */
+               .pnum = UINT64_C(0x0002000300010001),
+               .idx = 2,
+               .lpv = 0,
+       },
+       {
+               /* 0xd: a == b, b != c, c == d, d == e */
+               .pnum = UINT64_C(0x0002000300010002),
+               .idx = 2,
+               .lpv = 1,
+       },
+       {
+               /* 0xe: a != b, b == c, c == d, d == e */
+               .pnum = UINT64_C(0x0002000300040001),
+               .idx = 1,
+               .lpv = 0,
+       },
+       {
+               /* 0xf: a == b, b == c, c == d, d == e */
+               .pnum = UINT64_C(0x0002000300040005),
+               .idx = 0,
+               .lpv = 4,
+       },
+       };
+
+       union {
+               uint16_t u16[FWDSTEP + 1];
+               uint64_t u64;
+       } *pnum = (void *)pn;
+
+       int32_t v;
+
+       dp1 = _mm_cmpeq_epi16(dp1, dp2);
+       dp1 = _mm_unpacklo_epi16(dp1, dp1);
+       v = _mm_movemask_ps((__m128)dp1);
+
+       /* update last port counter. */
+       lp[0] += gptbl[v].lpv;
+
+       /* if dest port value has changed. */
+       if (v != GRPMSK) {
+               lp = pnum->u16 + gptbl[v].idx;
+               lp[0] = 1;
+               pnum->u64 = gptbl[v].pnum;
+       }
+
+       return lp;
+}
+
+#endif /* APP_LOOKUP_METHOD */
+
 /* main processing loop */
-static __attribute__((noreturn)) int
+static int
 main_loop(__attribute__((unused)) void *dummy)
 {
        struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
        unsigned lcore_id;
-       uint64_t prev_tsc = 0;
-       uint64_t diff_tsc, cur_tsc;
+       uint64_t prev_tsc, diff_tsc, cur_tsc;
        int i, j, nb_rx;
        uint8_t portid, queueid;
        struct lcore_conf *qconf;
+       const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
+               US_PER_S * BURST_TX_DRAIN_US;
+
+#if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && \
+       (ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
+       int32_t k;
+       uint16_t dlp;
+       uint16_t *lp;
+       uint16_t dst_port[MAX_PKT_BURST];
+       __m128i dip[MAX_PKT_BURST / FWDSTEP];
+       uint32_t flag[MAX_PKT_BURST / FWDSTEP];
+       uint16_t pnum[MAX_PKT_BURST + 1];
+#endif
+
+       prev_tsc = 0;
 
        lcore_id = rte_lcore_id();
        qconf = &lcore_conf[lcore_id];
 
        if (qconf->n_rx_queue == 0) {
                RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
-               while(1);
+               return 0;
        }
 
        RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
@@ -684,16 +1442,16 @@ main_loop(__attribute__((unused)) void *dummy)
                 * TX burst queue drain
                 */
                diff_tsc = cur_tsc - prev_tsc;
-               if (unlikely(diff_tsc > BURST_TX_DRAIN)) {
+               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 < MAX_PORTS; portid++) {
+                       for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
                                if (qconf->tx_mbufs[portid].len == 0)
                                        continue;
-                               send_burst(&lcore_conf[lcore_id],
+                               send_burst(qconf,
                                        qconf->tx_mbufs[portid].len,
                                        portid);
                                qconf->tx_mbufs[portid].len = 0;
@@ -706,10 +1464,166 @@ main_loop(__attribute__((unused)) void *dummy)
                 * Read packet from RX queues
                 */
                for (i = 0; i < qconf->n_rx_queue; ++i) {
-
                        portid = qconf->rx_queue_list[i].port_id;
                        queueid = qconf->rx_queue_list[i].queue_id;
-                       nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);
+                       nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
+                               MAX_PKT_BURST);
+                       if (nb_rx == 0)
+                               continue;
+
+#if (ENABLE_MULTI_BUFFER_OPTIMIZE == 1)
+#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
+                       {
+                               /*
+                                * Send nb_rx - nb_rx%4 packets
+                                * in groups of 4.
+                                */
+                               int32_t n = RTE_ALIGN_FLOOR(nb_rx, 4);
+                               for (j = 0; j < n ; j+=4) {
+                                       uint32_t ol_flag = pkts_burst[j]->ol_flags
+                                                       & pkts_burst[j+1]->ol_flags
+                                                       & pkts_burst[j+2]->ol_flags
+                                                       & pkts_burst[j+3]->ol_flags;
+                                       if (ol_flag & PKT_RX_IPV4_HDR ) {
+                                               simple_ipv4_fwd_4pkts(&pkts_burst[j],
+                                                                       portid, qconf);
+                                       } else if (ol_flag & PKT_RX_IPV6_HDR) {
+                                               simple_ipv6_fwd_4pkts(&pkts_burst[j],
+                                                                       portid, qconf);
+                                       } else {
+                                               l3fwd_simple_forward(pkts_burst[j],
+                                                                       portid, qconf);
+                                               l3fwd_simple_forward(pkts_burst[j+1],
+                                                                       portid, qconf);
+                                               l3fwd_simple_forward(pkts_burst[j+2],
+                                                                       portid, qconf);
+                                               l3fwd_simple_forward(pkts_burst[j+3],
+                                                                       portid, qconf);
+                                       }
+                               }
+                               for (; j < nb_rx ; j++) {
+                                       l3fwd_simple_forward(pkts_burst[j],
+                                                               portid, qconf);
+                               }
+                       }
+#elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
+
+                       k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
+                       for (j = 0; j != k; j += FWDSTEP) {
+                               processx4_step1(&pkts_burst[j],
+                                       &dip[j / FWDSTEP],
+                                       &flag[j / FWDSTEP]);
+                       }
+
+                       k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
+                       for (j = 0; j != k; j += FWDSTEP) {
+                               processx4_step2(qconf, dip[j / FWDSTEP],
+                                       flag[j / FWDSTEP], portid,
+                                       &pkts_burst[j], &dst_port[j]);
+                       }
+
+                       /*
+                        * Finish packet processing and group consecutive
+                        * packets with the same destination port.
+                        */
+                       k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
+                       if (k != 0) {
+                               __m128i dp1, dp2;
+
+                               lp = pnum;
+                               lp[0] = 1;
+
+                               processx4_step3(pkts_burst, dst_port);
+
+                               /* dp1: <d[0], d[1], d[2], d[3], ... > */
+                               dp1 = _mm_loadu_si128((__m128i *)dst_port);
+
+                               for (j = FWDSTEP; j != k; j += FWDSTEP) {
+                                       processx4_step3(&pkts_burst[j],
+                                               &dst_port[j]);
+
+                                       /*
+                                        * dp2:
+                                        * <d[j-3], d[j-2], d[j-1], d[j], ... >
+                                        */
+                                       dp2 = _mm_loadu_si128((__m128i *)
+                                               &dst_port[j - FWDSTEP + 1]);
+                                       lp  = port_groupx4(&pnum[j - FWDSTEP],
+                                               lp, dp1, dp2);
+
+                                       /*
+                                        * dp1:
+                                        * <d[j], d[j+1], d[j+2], d[j+3], ... >
+                                        */
+                                       dp1 = _mm_srli_si128(dp2,
+                                               (FWDSTEP - 1) *
+                                               sizeof(dst_port[0]));
+                               }
+
+                               /*
+                                * dp2: <d[j-3], d[j-2], d[j-1], d[j-1], ... >
+                                */
+                               dp2 = _mm_shufflelo_epi16(dp1, 0xf9);
+                               lp  = port_groupx4(&pnum[j - FWDSTEP], lp,
+                                       dp1, dp2);
+
+                               /*
+                                * remove values added by the last repeated
+                                * dst port.
+                                */
+                               lp[0]--;
+                               dlp = dst_port[j - 1];
+                       } else {
+                               /* set dlp and lp to the never used values. */
+                               dlp = BAD_PORT - 1;
+                               lp = pnum + MAX_PKT_BURST;
+                       }
+
+                       /* Process up to last 3 packets one by one. */
+                       switch (nb_rx % FWDSTEP) {
+                       case 3:
+                               process_packet(qconf, pkts_burst[j],
+                                       dst_port + j, portid);
+                               GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+                               j++;
+                       case 2:
+                               process_packet(qconf, pkts_burst[j],
+                                       dst_port + j, portid);
+                               GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+                               j++;
+                       case 1:
+                               process_packet(qconf, pkts_burst[j],
+                                       dst_port + j, portid);
+                               GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+                               j++;
+                       }
+
+                       /*
+                        * Send packets out, through destination port.
+                        * Consecuteve pacekts with the same destination port
+                        * are already grouped together.
+                        * If destination port for the packet equals BAD_PORT,
+                        * then free the packet without sending it out.
+                        */
+                       for (j = 0; j < nb_rx; j += k) {
+
+                               int32_t m;
+                               uint16_t pn;
+
+                               pn = dst_port[j];
+                               k = pnum[j];
+
+                               if (likely(pn != BAD_PORT)) {
+                                       send_packetsx4(qconf, pn,
+                                               pkts_burst + j, k);
+                               } else {
+                                       for (m = j; m != j + k; m++)
+                                               rte_pktmbuf_free(pkts_burst[m]);
+                               }
+                       }
+
+#endif /* APP_LOOKUP_METHOD */
+#else /* ENABLE_MULTI_BUFFER_OPTIMIZE == 0 */
 
                        /* Prefetch first packets */
                        for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
@@ -721,13 +1635,17 @@ main_loop(__attribute__((unused)) void *dummy)
                        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], portid, qconf);
+                               l3fwd_simple_forward(pkts_burst[j], portid,
+                                       qconf);
                        }
 
                        /* Forward remaining prefetched packets */
                        for (; j < nb_rx; j++) {
-                               l3fwd_simple_forward(pkts_burst[j], portid, qconf);
+                               l3fwd_simple_forward(pkts_burst[j], portid,
+                                       qconf);
                        }
+#endif /* ENABLE_MULTI_BUFFER_OPTIMIZE */
+
                }
        }
 }
@@ -827,8 +1745,10 @@ print_usage(const char *prgname)
                "  -P : enable promiscuous mode\n"
                "  --config (port,queue,lcore): rx queues configuration\n"
                "  --no-numa: optional, disable numa awareness\n"
+               "  --ipv6: optional, specify it if running ipv6 packets\n"
                "  --enable-jumbo: enable jumbo frame"
-               " which max packet len is PKTLEN in decimal (64-9600)\n",
+               " which max packet len is PKTLEN in decimal (64-9600)\n"
+               "  --hash-entry-num: specify the hash entry number in hexadecimal to be setup\n",
                prgname);
 }
 
@@ -865,6 +1785,24 @@ parse_portmask(const char *portmask)
        return pm;
 }
 
+#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
+static int
+parse_hash_entry_number(const char *hash_entry_num)
+{
+       char *end = NULL;
+       unsigned long hash_en;
+       /* parse hexadecimal string */
+       hash_en = strtoul(hash_entry_num, &end, 16);
+       if ((hash_entry_num[0] == '\0') || (end == NULL) || (*end != '\0'))
+               return -1;
+
+       if (hash_en == 0)
+               return -1;
+
+       return hash_en;
+}
+#endif
+
 static int
 parse_config(const char *q_arg)
 {
@@ -893,7 +1831,7 @@ parse_config(const char *q_arg)
                if(size >= sizeof(s))
                        return -1;
 
-               rte_snprintf(s, sizeof(s), "%.*s", size, p);
+               snprintf(s, sizeof(s), "%.*s", size, p);
                if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
                        return -1;
                for (i = 0; i < _NUM_FLD; i++){
@@ -916,6 +1854,12 @@ parse_config(const char *q_arg)
        return 0;
 }
 
+#define CMD_LINE_OPT_CONFIG "config"
+#define CMD_LINE_OPT_NO_NUMA "no-numa"
+#define CMD_LINE_OPT_IPV6 "ipv6"
+#define CMD_LINE_OPT_ENABLE_JUMBO "enable-jumbo"
+#define CMD_LINE_OPT_HASH_ENTRY_NUM "hash-entry-num"
+
 /* Parse the argument given in the command line of the application */
 static int
 parse_args(int argc, char **argv)
@@ -925,9 +1869,11 @@ parse_args(int argc, char **argv)
        int option_index;
        char *prgname = argv[0];
        static struct option lgopts[] = {
-               {"config", 1, 0, 0},
-               {"no-numa", 0, 0, 0},
-               {"enable-jumbo", 0, 0, 0},
+               {CMD_LINE_OPT_CONFIG, 1, 0, 0},
+               {CMD_LINE_OPT_NO_NUMA, 0, 0, 0},
+               {CMD_LINE_OPT_IPV6, 0, 0, 0},
+               {CMD_LINE_OPT_ENABLE_JUMBO, 0, 0, 0},
+               {CMD_LINE_OPT_HASH_ENTRY_NUM, 1, 0, 0},
                {NULL, 0, 0, 0}
        };
 
@@ -953,7 +1899,8 @@ parse_args(int argc, char **argv)
 
                /* long options */
                case 0:
-                       if (!strncmp(lgopts[option_index].name, "config", 6)) {
+                       if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_CONFIG,
+                               sizeof (CMD_LINE_OPT_CONFIG))) {
                                ret = parse_config(optarg);
                                if (ret) {
                                        printf("invalid config\n");
@@ -962,18 +1909,28 @@ parse_args(int argc, char **argv)
                                }
                        }
 
-                       if (!strncmp(lgopts[option_index].name, "no-numa", 7)) {
+                       if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_NO_NUMA,
+                               sizeof(CMD_LINE_OPT_NO_NUMA))) {
                                printf("numa is disabled \n");
                                numa_on = 0;
                        }
-                       
-                       if (!strncmp(lgopts[option_index].name, "enable-jumbo", 12)) {
+
+#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
+                       if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_IPV6,
+                               sizeof(CMD_LINE_OPT_IPV6))) {
+                               printf("ipv6 is specified \n");
+                               ipv6 = 1;
+                       }
+#endif
+
+                       if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_ENABLE_JUMBO,
+                               sizeof (CMD_LINE_OPT_ENABLE_JUMBO))) {
                                struct option lenopts = {"max-pkt-len", required_argument, 0, 0};
 
-                               printf("jumbo frame is enabled \n");
+                               printf("jumbo frame is enabled - disabling simple TX path\n");
                                port_conf.rxmode.jumbo_frame = 1;
-       
-                               /* if no max-pkt-len set, use the default value ETHER_MAX_LEN */        
+
+                               /* if no max-pkt-len set, use the default value ETHER_MAX_LEN */
                                if (0 == getopt_long(argc, argvopt, "", &lenopts, &option_index)) {
                                        ret = parse_max_pkt_len(optarg);
                                        if ((ret < 64) || (ret > MAX_JUMBO_PKT_LEN)){
@@ -983,10 +1940,22 @@ parse_args(int argc, char **argv)
                                        }
                                        port_conf.rxmode.max_rx_pkt_len = ret;
                                }
-                               printf("set jumbo frame max packet length to %u\n", 
+                               printf("set jumbo frame max packet length to %u\n",
                                                (unsigned int)port_conf.rxmode.max_rx_pkt_len);
                        }
-                       
+#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
+                       if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_HASH_ENTRY_NUM,
+                               sizeof(CMD_LINE_OPT_HASH_ENTRY_NUM))) {
+                               ret = parse_hash_entry_number(optarg);
+                               if ((ret > 0) && (ret <= L3FWD_HASH_ENTRIES)) {
+                                       hash_entry_number = ret;
+                               } else {
+                                       printf("invalid hash entry number\n");
+                                       print_usage(prgname);
+                                       return -1;
+                               }
+                       }
+#endif
                        break;
 
                default:
@@ -1006,25 +1975,199 @@ parse_args(int argc, char **argv)
 static void
 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
 {
-       printf ("%s%02X:%02X:%02X:%02X:%02X:%02X", name,
-               eth_addr->addr_bytes[0],
-               eth_addr->addr_bytes[1],
-               eth_addr->addr_bytes[2],
-               eth_addr->addr_bytes[3],
-               eth_addr->addr_bytes[4],
-               eth_addr->addr_bytes[5]);
+       char buf[ETHER_ADDR_FMT_SIZE];
+       ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
+       printf("%s%s", name, buf);
 }
 
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
+
+static void convert_ipv4_5tuple(struct ipv4_5tuple* key1,
+               union ipv4_5tuple_host* key2)
+{
+       key2->ip_dst = rte_cpu_to_be_32(key1->ip_dst);
+       key2->ip_src = rte_cpu_to_be_32(key1->ip_src);
+       key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
+       key2->port_src = rte_cpu_to_be_16(key1->port_src);
+       key2->proto = key1->proto;
+       key2->pad0 = 0;
+       key2->pad1 = 0;
+       return;
+}
+
+static void convert_ipv6_5tuple(struct ipv6_5tuple* key1,
+                union ipv6_5tuple_host* key2)
+{
+       uint32_t i;
+       for (i = 0; i < 16; i++)
+       {
+               key2->ip_dst[i] = key1->ip_dst[i];
+               key2->ip_src[i] = key1->ip_src[i];
+       }
+       key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
+       key2->port_src = rte_cpu_to_be_16(key1->port_src);
+       key2->proto = key1->proto;
+       key2->pad0 = 0;
+       key2->pad1 = 0;
+       key2->reserve = 0;
+       return;
+}
+
+#define BYTE_VALUE_MAX 256
+#define ALL_32_BITS 0xffffffff
+#define BIT_8_TO_15 0x0000ff00
+static inline void
+populate_ipv4_few_flow_into_table(const struct rte_hash* h)
+{
+       uint32_t i;
+       int32_t ret;
+       uint32_t array_len = sizeof(ipv4_l3fwd_route_array)/sizeof(ipv4_l3fwd_route_array[0]);
+
+       mask0 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_8_TO_15);
+       for (i = 0; i < array_len; i++) {
+               struct ipv4_l3fwd_route  entry;
+               union ipv4_5tuple_host newkey;
+               entry = ipv4_l3fwd_route_array[i];
+               convert_ipv4_5tuple(&entry.key, &newkey);
+               ret = rte_hash_add_key (h,(void *) &newkey);
+               if (ret < 0) {
+                       rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
+                               " to the l3fwd hash.\n", i);
+               }
+               ipv4_l3fwd_out_if[ret] = entry.if_out;
+       }
+       printf("Hash: Adding 0x%" PRIx32 " keys\n", array_len);
+}
+
+#define BIT_16_TO_23 0x00ff0000
+static inline void
+populate_ipv6_few_flow_into_table(const struct rte_hash* h)
+{
+       uint32_t i;
+       int32_t ret;
+       uint32_t array_len = sizeof(ipv6_l3fwd_route_array)/sizeof(ipv6_l3fwd_route_array[0]);
+
+       mask1 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_16_TO_23);
+       mask2 = _mm_set_epi32(0, 0, ALL_32_BITS, ALL_32_BITS);
+       for (i = 0; i < array_len; i++) {
+               struct ipv6_l3fwd_route entry;
+               union ipv6_5tuple_host newkey;
+               entry = ipv6_l3fwd_route_array[i];
+               convert_ipv6_5tuple(&entry.key, &newkey);
+               ret = rte_hash_add_key (h, (void *) &newkey);
+               if (ret < 0) {
+                       rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
+                               " to the l3fwd hash.\n", i);
+               }
+               ipv6_l3fwd_out_if[ret] = entry.if_out;
+       }
+       printf("Hash: Adding 0x%" PRIx32 "keys\n", array_len);
+}
+
+#define NUMBER_PORT_USED 4
+static inline void
+populate_ipv4_many_flow_into_table(const struct rte_hash* h,
+                unsigned int nr_flow)
+{
+       unsigned i;
+       mask0 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_8_TO_15);
+       for (i = 0; i < nr_flow; i++) {
+               struct ipv4_l3fwd_route entry;
+               union ipv4_5tuple_host newkey;
+               uint8_t a = (uint8_t) ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
+               uint8_t b = (uint8_t) (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
+               uint8_t c = (uint8_t) ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
+               /* Create the ipv4 exact match flow */
+               memset(&entry, 0, sizeof(entry));
+               switch (i & (NUMBER_PORT_USED -1)) {
+               case 0:
+                       entry = ipv4_l3fwd_route_array[0];
+                       entry.key.ip_dst = IPv4(101,c,b,a);
+                       break;
+               case 1:
+                       entry = ipv4_l3fwd_route_array[1];
+                       entry.key.ip_dst = IPv4(201,c,b,a);
+                       break;
+               case 2:
+                       entry = ipv4_l3fwd_route_array[2];
+                       entry.key.ip_dst = IPv4(111,c,b,a);
+                       break;
+               case 3:
+                       entry = ipv4_l3fwd_route_array[3];
+                       entry.key.ip_dst = IPv4(211,c,b,a);
+                       break;
+               };
+               convert_ipv4_5tuple(&entry.key, &newkey);
+               int32_t ret = rte_hash_add_key(h,(void *) &newkey);
+               if (ret < 0) {
+                       rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
+               }
+               ipv4_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
+
+       }
+       printf("Hash: Adding 0x%x keys\n", nr_flow);
+}
+
+static inline void
+populate_ipv6_many_flow_into_table(const struct rte_hash* h,
+                unsigned int nr_flow)
+{
+       unsigned i;
+       mask1 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_16_TO_23);
+       mask2 = _mm_set_epi32(0, 0, ALL_32_BITS, ALL_32_BITS);
+       for (i = 0; i < nr_flow; i++) {
+               struct ipv6_l3fwd_route entry;
+               union ipv6_5tuple_host newkey;
+               uint8_t a = (uint8_t) ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
+               uint8_t b = (uint8_t) (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
+               uint8_t c = (uint8_t) ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
+               /* Create the ipv6 exact match flow */
+               memset(&entry, 0, sizeof(entry));
+               switch (i & (NUMBER_PORT_USED - 1)) {
+               case 0: entry = ipv6_l3fwd_route_array[0]; break;
+               case 1: entry = ipv6_l3fwd_route_array[1]; break;
+               case 2: entry = ipv6_l3fwd_route_array[2]; break;
+               case 3: entry = ipv6_l3fwd_route_array[3]; break;
+               };
+               entry.key.ip_dst[13] = c;
+               entry.key.ip_dst[14] = b;
+               entry.key.ip_dst[15] = a;
+               convert_ipv6_5tuple(&entry.key, &newkey);
+               int32_t ret = rte_hash_add_key(h,(void *) &newkey);
+               if (ret < 0) {
+                       rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
+               }
+               ipv6_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
+
+       }
+       printf("Hash: Adding 0x%x keys\n", nr_flow);
+}
+
 static void
 setup_hash(int socketid)
 {
-       unsigned i;
-       int ret;
-       char s[64];
+    struct rte_hash_parameters ipv4_l3fwd_hash_params = {
+        .name = NULL,
+        .entries = L3FWD_HASH_ENTRIES,
+        .bucket_entries = 4,
+        .key_len = sizeof(union ipv4_5tuple_host),
+        .hash_func = ipv4_hash_crc,
+        .hash_func_init_val = 0,
+    };
+
+    struct rte_hash_parameters ipv6_l3fwd_hash_params = {
+        .name = NULL,
+        .entries = L3FWD_HASH_ENTRIES,
+        .bucket_entries = 4,
+        .key_len = sizeof(union ipv6_5tuple_host),
+        .hash_func = ipv6_hash_crc,
+        .hash_func_init_val = 0,
+    };
+
+    char s[64];
 
        /* create ipv4 hash */
-       rte_snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
+       snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
        ipv4_l3fwd_hash_params.name = s;
        ipv4_l3fwd_hash_params.socket_id = socketid;
        ipv4_l3fwd_lookup_struct[socketid] = rte_hash_create(&ipv4_l3fwd_hash_params);
@@ -1033,7 +2176,7 @@ setup_hash(int socketid)
                                "socket %d\n", socketid);
 
        /* create ipv6 hash */
-       rte_snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
+       snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
        ipv6_l3fwd_hash_params.name = s;
        ipv6_l3fwd_hash_params.socket_id = socketid;
        ipv6_l3fwd_lookup_struct[socketid] = rte_hash_create(&ipv6_l3fwd_hash_params);
@@ -1041,31 +2184,28 @@ setup_hash(int socketid)
                rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
                                "socket %d\n", socketid);
 
-
-       /* populate the ipv4 hash */
-       for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
-               ret = rte_hash_add_key (ipv4_l3fwd_lookup_struct[socketid],
-                               (void *) &ipv4_l3fwd_route_array[i].key);
-               if (ret < 0) {
-                       rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
-                               "l3fwd hash on socket %d\n", i, socketid);
+       if (hash_entry_number != HASH_ENTRY_NUMBER_DEFAULT) {
+               /* For testing hash matching with a large number of flows we
+                * generate millions of IP 5-tuples with an incremented dst
+                * address to initialize the hash table. */
+               if (ipv6 == 0) {
+                       /* populate the ipv4 hash */
+                       populate_ipv4_many_flow_into_table(
+                               ipv4_l3fwd_lookup_struct[socketid], hash_entry_number);
+               } else {
+                       /* populate the ipv6 hash */
+                       populate_ipv6_many_flow_into_table(
+                               ipv6_l3fwd_lookup_struct[socketid], hash_entry_number);
                }
-               ipv4_l3fwd_out_if[ret] = ipv4_l3fwd_route_array[i].if_out;
-               printf("Hash: Adding key\n");
-               print_ipv4_key(ipv4_l3fwd_route_array[i].key);
-       }
-
-       /* populate the ipv6 hash */
-       for (i = 0; i < IPV6_L3FWD_NUM_ROUTES; i++) {
-               ret = rte_hash_add_key (ipv6_l3fwd_lookup_struct[socketid],
-                               (void *) &ipv6_l3fwd_route_array[i].key);
-               if (ret < 0) {
-                       rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
-                               "l3fwd hash on socket %d\n", i, socketid);
+       } else {
+               /* Use data in ipv4/ipv6 l3fwd lookup table directly to initialize the hash table */
+               if (ipv6 == 0) {
+                       /* populate the ipv4 hash */
+                       populate_ipv4_few_flow_into_table(ipv4_l3fwd_lookup_struct[socketid]);
+               } else {
+                       /* populate the ipv6 hash */
+                       populate_ipv6_few_flow_into_table(ipv6_l3fwd_lookup_struct[socketid]);
                }
-               ipv6_l3fwd_out_if[ret] = ipv6_l3fwd_route_array[i].if_out;
-               printf("Hash: Adding key\n");
-               print_ipv6_key(ipv6_l3fwd_route_array[i].key);
        }
 }
 #endif
@@ -1074,12 +2214,13 @@ setup_hash(int socketid)
 static void
 setup_lpm(int socketid)
 {
+       struct rte_lpm6_config config;
        unsigned i;
        int ret;
        char s[64];
 
        /* create the LPM table */
-       rte_snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
+       snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
        ipv4_l3fwd_lookup_struct[socketid] = rte_lpm_create(s, socketid,
                                IPV4_L3FWD_LPM_MAX_RULES, 0);
        if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
@@ -1088,6 +2229,12 @@ setup_lpm(int socketid)
 
        /* populate the LPM table */
        for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
+
+               /* skip unused ports */
+               if ((1 << ipv4_l3fwd_route_array[i].if_out &
+                               enabled_port_mask) == 0)
+                       continue;
+
                ret = rte_lpm_add(ipv4_l3fwd_lookup_struct[socketid],
                        ipv4_l3fwd_route_array[i].ip,
                        ipv4_l3fwd_route_array[i].depth,
@@ -1104,6 +2251,43 @@ setup_lpm(int socketid)
                        ipv4_l3fwd_route_array[i].depth,
                        ipv4_l3fwd_route_array[i].if_out);
        }
+
+       /* create the LPM6 table */
+       snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
+
+       config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
+       config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
+       config.flags = 0;
+       ipv6_l3fwd_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
+                               &config);
+       if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
+               rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
+                               " on socket %d\n", socketid);
+
+       /* populate the LPM table */
+       for (i = 0; i < IPV6_L3FWD_NUM_ROUTES; i++) {
+
+               /* skip unused ports */
+               if ((1 << ipv6_l3fwd_route_array[i].if_out &
+                               enabled_port_mask) == 0)
+                       continue;
+
+               ret = rte_lpm6_add(ipv6_l3fwd_lookup_struct[socketid],
+                       ipv6_l3fwd_route_array[i].ip,
+                       ipv6_l3fwd_route_array[i].depth,
+                       ipv6_l3fwd_route_array[i].if_out);
+
+               if (ret < 0) {
+                       rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
+                               "l3fwd LPM table on socket %d\n",
+                               i, socketid);
+               }
+
+               printf("LPM: Adding route %s / %d (%d)\n",
+                       "IPV6",
+                       ipv6_l3fwd_route_array[i].depth,
+                       ipv6_l3fwd_route_array[i].if_out);
+       }
 }
 #endif
 
@@ -1129,13 +2313,11 @@ init_mem(unsigned nb_mbuf)
                                socketid, lcore_id, NB_SOCKETS);
                }
                if (pktmbuf_pool[socketid] == NULL) {
-                       rte_snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
+                       snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
                        pktmbuf_pool[socketid] =
-                               rte_mempool_create(s, nb_mbuf, MBUF_SIZE, MEMPOOL_CACHE_SIZE,
-                                       sizeof(struct rte_pktmbuf_pool_private),
-                                       rte_pktmbuf_pool_init, NULL,
-                                       rte_pktmbuf_init, NULL,
-                                       socketid, 0);
+                               rte_pktmbuf_pool_create(s, nb_mbuf,
+                                       MEMPOOL_CACHE_SIZE, 0, MBUF_DATA_SIZE,
+                                       socketid);
                        if (pktmbuf_pool[socketid] == NULL)
                                rte_exit(EXIT_FAILURE,
                                                "Cannot init mbuf pool on socket %d\n", socketid);
@@ -1150,9 +2332,7 @@ init_mem(unsigned nb_mbuf)
                }
                qconf = &lcore_conf[lcore_id];
                qconf->ipv4_lookup_struct = ipv4_l3fwd_lookup_struct[socketid];
-#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
                qconf->ipv6_lookup_struct = ipv6_l3fwd_lookup_struct[socketid];
-#endif
        }
        return 0;
 }
@@ -1213,9 +2393,11 @@ check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 }
 
 int
-MAIN(int argc, char **argv)
+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;
@@ -1242,17 +2424,9 @@ MAIN(int argc, char **argv)
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 
-
-       /* init driver(s) */
-       if (rte_pmd_init_all() < 0)
-               rte_exit(EXIT_FAILURE, "Cannot init pmd\n");
-
-       if (rte_eal_pci_probe() < 0)
-               rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
-
        nb_ports = rte_eth_dev_count();
-       if (nb_ports > MAX_PORTS)
-               nb_ports = MAX_PORTS;
+       if (nb_ports > RTE_MAX_ETHPORTS)
+               nb_ports = RTE_MAX_ETHPORTS;
 
        if (check_port_config(nb_ports) < 0)
                rte_exit(EXIT_FAILURE, "check_port_config failed\n");
@@ -1287,6 +2461,14 @@ MAIN(int argc, char **argv)
                print_ethaddr(" Address:", &ports_eth_addr[portid]);
                printf(", ");
 
+               /*
+                * prepare dst and src MACs for each port.
+                */
+               *(uint64_t *)(val_eth + portid) =
+                       ETHER_LOCAL_ADMIN_ADDR + ((uint64_t)portid << 40);
+               ether_addr_copy(&ports_eth_addr[portid],
+                       (struct ether_addr *)(val_eth + portid) + 1);
+
                /* init memory */
                ret = init_mem(NB_MBUF);
                if (ret < 0)
@@ -1305,8 +2487,13 @@ 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);
@@ -1338,7 +2525,9 @@ 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);