cxgbe: update documentation
[dpdk.git] / examples / l3fwd / main.c
old mode 100755 (executable)
new mode 100644 (file)
index 04713c7..5c22ed1
 #include <getopt.h>
 
 #include <rte_common.h>
-#include <rte_common_vect.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>
@@ -73,7 +72,8 @@
 #include <rte_udp.h>
 #include <rte_string_fns.h>
 
-#include "main.h"
+#include <cmdline_parse.h>
+#include <cmdline_parse_etheraddr.h>
 
 #define APP_LOOKUP_EXACT_MATCH          0
 #define APP_LOOKUP_LPM                  1
 
 #define MEMPOOL_CACHE_SIZE 256
 
-#define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
-
 /*
  * This expression is used to calculate the number of mbufs needed depending on user input, taking
  *  into account memory for rx and tx hardware rings, cache per lcore and mtable per port per lcore.
                                nb_lcores*MEMPOOL_CACHE_SIZE),                                                                                          \
                                (unsigned)8192)
 
-/*
- * RX and TX Prefetch, Host, and Write-back threshold values should be
- * carefully set for optimal performance. Consult the network
- * controller's datasheet and supporting DPDK documentation for guidance
- * on how these parameters should be set.
- */
-#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
-#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
-#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
-
-/*
- * These default values are optimized for use with the Intel(R) 82599 10 GbE
- * Controller and the DPDK ixgbe PMD. Consider using other values for other
- * network controllers and/or network drivers.
- */
-#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
-#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
-#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
-
 #define MAX_PKT_BURST     32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
@@ -183,6 +162,7 @@ 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 uint64_t dest_eth_addr[RTE_MAX_ETHPORTS];
 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 
 static __m128i val_eth[RTE_MAX_ETHPORTS];
@@ -251,7 +231,7 @@ 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 = {
@@ -259,31 +239,6 @@ static struct rte_eth_conf port_conf = {
        },
 };
 
-static const struct rte_eth_rxconf rx_conf = {
-       .rx_thresh = {
-               .pthresh = RX_PTHRESH,
-               .hthresh = RX_HTHRESH,
-               .wthresh = RX_WTHRESH,
-       },
-       .rx_free_thresh = 32,
-};
-
-static struct rte_eth_txconf tx_conf = {
-       .tx_thresh = {
-               .pthresh = TX_PTHRESH,
-               .hthresh = TX_HTHRESH,
-               .wthresh = TX_WTHRESH,
-       },
-       .tx_free_thresh = 0, /* Use PMD default values */
-       .tx_rs_thresh = 0, /* Use PMD default values */
-       .txq_flags = (ETH_TXQ_FLAGS_NOMULTSEGS |
-                       ETH_TXQ_FLAGS_NOVLANOFFL |
-                       ETH_TXQ_FLAGS_NOXSUMSCTP |
-                       ETH_TXQ_FLAGS_NOXSUMUDP |
-                       ETH_TXQ_FLAGS_NOXSUMTCP)
-
-};
-
 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 
 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
@@ -770,9 +725,11 @@ get_ipv6_dst_port(void *ipv6_hdr,  uint8_t portid, lookup6_struct_t * ipv6_l3fwd
 }
 #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))
-static inline void l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qconf);
 
 #define MASK_ALL_PKTS    0xf
 #define EXECLUDE_1ST_PKT 0xe
@@ -785,7 +742,6 @@ simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
 {
        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];
@@ -797,31 +753,31 @@ simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
        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));
+       ipv4_hdr[0] = rte_pktmbuf_mtod_offset(m[0], struct ipv4_hdr *,
+                                             sizeof(struct ether_hdr));
+       ipv4_hdr[1] = rte_pktmbuf_mtod_offset(m[1], struct ipv4_hdr *,
+                                             sizeof(struct ether_hdr));
+       ipv4_hdr[2] = rte_pktmbuf_mtod_offset(m[2], struct ipv4_hdr *,
+                                             sizeof(struct ether_hdr));
+       ipv4_hdr[3] = rte_pktmbuf_mtod_offset(m[3], struct ipv4_hdr *,
+                                             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.pkt_len) < 0) {
+       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.pkt_len) < 0) {
+       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.pkt_len) < 0) {
+       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.pkt_len) < 0) {
+       if (is_valid_ipv4_pkt(ipv4_hdr[3], m[3]->pkt_len) < 0) {
                rte_pktmbuf_free(m[3]);
                valid_mask &= EXECLUDE_4TH_PKT;
        }
@@ -840,14 +796,10 @@ simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
        }
 #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)));
+       data[0] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[0], __m128i *, sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+       data[1] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[1], __m128i *, sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+       data[2] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[2], __m128i *, sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
+       data[3] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[3], __m128i *, 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);
@@ -870,16 +822,6 @@ simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
        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);
@@ -892,6 +834,12 @@ simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
        ++(ipv4_hdr[3]->hdr_checksum);
 #endif
 
+       /* dst addr */
+       *(uint64_t *)&eth_hdr[0]->d_addr = dest_eth_addr[dst_port[0]];
+       *(uint64_t *)&eth_hdr[1]->d_addr = dest_eth_addr[dst_port[1]];
+       *(uint64_t *)&eth_hdr[2]->d_addr = dest_eth_addr[dst_port[2]];
+       *(uint64_t *)&eth_hdr[3]->d_addr = dest_eth_addr[dst_port[3]];
+
        /* 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);
@@ -908,14 +856,9 @@ simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
 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)));
+        __m128i tmpdata0 = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m0, __m128i *, sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)));
+        __m128i tmpdata1 = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m0, __m128i *, sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len) + sizeof(__m128i)));
+        __m128i tmpdata2 = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m0, __m128i *, 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);
@@ -927,7 +870,6 @@ simple_ipv6_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
 {
        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];
@@ -938,14 +880,14 @@ simple_ipv6_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
        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));
+       ipv6_hdr[0] = rte_pktmbuf_mtod_offset(m[0], struct ipv6_hdr *,
+                                             sizeof(struct ether_hdr));
+       ipv6_hdr[1] = rte_pktmbuf_mtod_offset(m[1], struct ipv6_hdr *,
+                                             sizeof(struct ether_hdr));
+       ipv6_hdr[2] = rte_pktmbuf_mtod_offset(m[2], struct ipv6_hdr *,
+                                             sizeof(struct ether_hdr));
+       ipv6_hdr[3] = rte_pktmbuf_mtod_offset(m[3], struct ipv6_hdr *,
+                                             sizeof(struct ether_hdr));
 
        get_ipv6_5tuple(m[0], mask1, mask2, &key[0]);
        get_ipv6_5tuple(m[1], mask1, mask2, &key[1]);
@@ -968,15 +910,11 @@ simple_ipv6_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *
        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);
+       /* dst addr */
+       *(uint64_t *)&eth_hdr[0]->d_addr = dest_eth_addr[dst_port[0]];
+       *(uint64_t *)&eth_hdr[1]->d_addr = dest_eth_addr[dst_port[1]];
+       *(uint64_t *)&eth_hdr[2]->d_addr = dest_eth_addr[dst_port[2]];
+       *(uint64_t *)&eth_hdr[3]->d_addr = dest_eth_addr[dst_port[3]];
 
        /* src addr */
        ether_addr_copy(&ports_eth_addr[dst_port[0]], &eth_hdr[0]->s_addr);
@@ -997,19 +935,18 @@ l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qcon
 {
        struct ether_hdr *eth_hdr;
        struct ipv4_hdr *ipv4_hdr;
-       void *d_addr_bytes;
        uint8_t dst_port;
 
        eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 
        if (m->ol_flags & PKT_RX_IPV4_HDR) {
                /* Handle IPv4 headers.*/
-               ipv4_hdr = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m, unsigned char *) +
-                               sizeof(struct ether_hdr));
+               ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
+                                                  sizeof(struct ether_hdr));
 
 #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;
                }
@@ -1021,16 +958,13 @@ l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qcon
                                (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) = ETHER_LOCAL_ADMIN_ADDR +
-                       ((uint64_t)dst_port << 40);
-
 #ifdef DO_RFC_1812_CHECKS
                /* Update time to live and header checksum */
                --(ipv4_hdr->time_to_live);
                ++(ipv4_hdr->hdr_checksum);
 #endif
+               /* dst addr */
+               *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[dst_port];
 
                /* src addr */
                ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
@@ -1041,18 +975,16 @@ l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qcon
                /* Handle IPv6 headers.*/
                struct ipv6_hdr *ipv6_hdr;
 
-               ipv6_hdr = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m, unsigned char *) +
-                               sizeof(struct ether_hdr));
+               ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
+                                                  sizeof(struct ether_hdr));
 
                dst_port = get_ipv6_dst_port(ipv6_hdr, portid, qconf->ipv6_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) = ETHER_LOCAL_ADMIN_ADDR +
-                       ((uint64_t)dst_port << 40);
+               /* dst addr */
+               *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[dst_port];
 
                /* src addr */
                ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
@@ -1214,7 +1146,7 @@ processx4_step2(const struct lcore_conf *qconf, __m128i dip, uint32_t flag,
        if (likely(flag != 0)) {
                rte_lpm_lookupx4(qconf->ipv4_lookup_struct, dip, dprt, portid);
        } else {
-               dst.m = dip;
+               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);
@@ -1233,10 +1165,10 @@ processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[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 *));
+       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]);
@@ -1271,6 +1203,168 @@ processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[FWDSTEP])
                &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 */
@@ -1289,9 +1383,12 @@ main_loop(__attribute__((unused)) void *dummy)
 #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;
@@ -1402,9 +1499,61 @@ main_loop(__attribute__((unused)) void *dummy)
                                        &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);
-                       for (j = 0; j != k; j += FWDSTEP) {
-                               processx4_step3(&pkts_burst[j], &dst_port[j]);
+                       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. */
@@ -1412,39 +1561,41 @@ main_loop(__attribute__((unused)) void *dummy)
                        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.
-                        * Try to group packets with the same 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) {
+                       for (j = 0; j < nb_rx; j += k) {
 
-                               uint16_t cn, pn = dst_port[j];
+                               int32_t m;
+                               uint16_t pn;
 
-                               k = j;
-                               do {
-                                       cn = dst_port[k];
-                               } while (cn != BAD_PORT && pn == cn &&
-                                               ++k < nb_rx);
+                               pn = dst_port[j];
+                               k = pnum[j];
 
-                               send_packetsx4(qconf, pn, pkts_burst + j,
-                                       k - j);
-
-                               if (cn == BAD_PORT) {
-                                       rte_pktmbuf_free(pkts_burst[k]);
-                                       k += 1;
+                               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]);
                                }
                        }
 
@@ -1570,6 +1721,7 @@ print_usage(const char *prgname)
                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
                "  -P : enable promiscuous mode\n"
                "  --config (port,queue,lcore): rx queues configuration\n"
+               "  --eth-dest=X,MM:MM:MM:MM:MM:MM: optional, ethernet destination for port X\n"
                "  --no-numa: optional, disable numa awareness\n"
                "  --ipv6: optional, specify it if running ipv6 packets\n"
                "  --enable-jumbo: enable jumbo frame"
@@ -1657,7 +1809,7 @@ 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++){
@@ -1680,7 +1832,36 @@ parse_config(const char *q_arg)
        return 0;
 }
 
+static void
+parse_eth_dest(const char *optarg)
+{
+       uint8_t portid;
+       char *port_end;
+       uint8_t c, *dest, peer_addr[6];
+
+       errno = 0;
+       portid = strtoul(optarg, &port_end, 10);
+       if (errno != 0 || port_end == optarg || *port_end++ != ',')
+               rte_exit(EXIT_FAILURE,
+               "Invalid eth-dest: %s", optarg);
+       if (portid >= RTE_MAX_ETHPORTS)
+               rte_exit(EXIT_FAILURE,
+               "eth-dest: port %d >= RTE_MAX_ETHPORTS(%d)\n",
+               portid, RTE_MAX_ETHPORTS);
+
+       if (cmdline_parse_etheraddr(NULL, port_end,
+               &peer_addr, sizeof(peer_addr)) < 0)
+               rte_exit(EXIT_FAILURE,
+               "Invalid ethernet address: %s\n",
+               port_end);
+       dest = (uint8_t *)&dest_eth_addr[portid];
+       for (c = 0; c < 6; c++)
+               dest[c] = peer_addr[c];
+       *(uint64_t *)(val_eth + portid) = dest_eth_addr[portid];
+}
+
 #define CMD_LINE_OPT_CONFIG "config"
+#define CMD_LINE_OPT_ETH_DEST "eth-dest"
 #define CMD_LINE_OPT_NO_NUMA "no-numa"
 #define CMD_LINE_OPT_IPV6 "ipv6"
 #define CMD_LINE_OPT_ENABLE_JUMBO "enable-jumbo"
@@ -1696,6 +1877,7 @@ parse_args(int argc, char **argv)
        char *prgname = argv[0];
        static struct option lgopts[] = {
                {CMD_LINE_OPT_CONFIG, 1, 0, 0},
+               {CMD_LINE_OPT_ETH_DEST, 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},
@@ -1735,6 +1917,11 @@ parse_args(int argc, char **argv)
                                }
                        }
 
+                       if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_ETH_DEST,
+                               sizeof(CMD_LINE_OPT_CONFIG))) {
+                                       parse_eth_dest(optarg);
+                       }
+
                        if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_NO_NUMA,
                                sizeof(CMD_LINE_OPT_NO_NUMA))) {
                                printf("numa is disabled \n");
@@ -1755,7 +1942,6 @@ parse_args(int argc, char **argv)
 
                                printf("jumbo frame is enabled - disabling simple TX path\n");
                                port_conf.rxmode.jumbo_frame = 1;
-                               tx_conf.txq_flags = 0;
 
                                /* if no max-pkt-len set, use the default value ETHER_MAX_LEN */
                                if (0 == getopt_long(argc, argvopt, "", &lenopts, &option_index)) {
@@ -1802,13 +1988,9 @@ 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)
@@ -1998,7 +2180,7 @@ setup_hash(int socketid)
     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);
@@ -2007,7 +2189,7 @@ 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);
@@ -2051,7 +2233,7 @@ setup_lpm(int socketid)
        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)
@@ -2084,7 +2266,7 @@ setup_lpm(int socketid)
        }
 
        /* create the LPM6 table */
-       rte_snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
+       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;
@@ -2144,13 +2326,11 @@ 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,
+                                       RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
                        if (pktmbuf_pool[socketid] == NULL)
                                rte_exit(EXIT_FAILURE,
                                                "Cannot init mbuf pool on socket %d\n", socketid);
@@ -2226,9 +2406,11 @@ 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;
@@ -2243,6 +2425,12 @@ MAIN(int argc, char **argv)
        argc -= ret;
        argv += ret;
 
+       /* pre-init dst MACs for all ports to 02:00:00:00:00:xx */
+       for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+               dest_eth_addr[portid] = ETHER_LOCAL_ADMIN_ADDR + ((uint64_t)portid << 40);
+               *(uint64_t *)(val_eth + portid) = dest_eth_addr[portid];
+       }
+
        /* parse application arguments (after the EAL ones) */
        ret = parse_args(argc, argv);
        if (ret < 0)
@@ -2255,10 +2443,6 @@ MAIN(int argc, char **argv)
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 
-
-       if (rte_eal_pci_probe() < 0)
-               rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
-
        nb_ports = rte_eth_dev_count();
        if (nb_ports > RTE_MAX_ETHPORTS)
                nb_ports = RTE_MAX_ETHPORTS;
@@ -2295,12 +2479,13 @@ MAIN(int argc, char **argv)
                rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
                print_ethaddr(" Address:", &ports_eth_addr[portid]);
                printf(", ");
+               print_ethaddr("Destination:",
+                       (const struct ether_addr *)&dest_eth_addr[portid]);
+               printf(", ");
 
                /*
-                * prepare dst and src MACs for each port.
+                * prepare 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);
 
@@ -2322,8 +2507,13 @@ 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);
@@ -2355,7 +2545,9 @@ 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);