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authorJingjing Wu <jingjing.wu@intel.com>2016-02-25 15:33:35 +0800
committerThomas Monjalon <thomas.monjalon@6wind.com>2016-03-16 17:47:10 +0100
commit8cc72f2814dd7f0b805e5a170e93f464c0ffcd51 (patch)
treeb89c84b24d2699e5180e198f31d0d9c9dd889767 /examples
parent5135f3ca49a7efe23bb0a51f0e361bf2129ebc28 (diff)
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examples/vmdq_dcb: support X710
Currently, the example vmdq_dcb only works on Intel(R) 82599 NICs. This patch extends this sample to make it work both on Intel(R) 82599 and X710/XL710 NICs by making the following changes: 1. add VMDQ base queue checking to avoid forwarding on PF queues. 2. assign each VMDQ pool to a MAC address. 3. add more arguments (nb-tcs, enable-rss) to change the default setting 4. extend the max number of queues from 128 to 1024. This patch also reworks the user guide for the vmdq_dcb sample. Signed-off-by: Jingjing Wu <jingjing.wu@intel.com> Acked-by: Helin Zhang <helin.zhang@intel.com>
Diffstat (limited to 'examples')
-rw-r--r--examples/vmdq_dcb/main.c391
1 files changed, 314 insertions, 77 deletions
diff --git a/examples/vmdq_dcb/main.c b/examples/vmdq_dcb/main.c
index b90ac28..62e1422 100644
--- a/examples/vmdq_dcb/main.c
+++ b/examples/vmdq_dcb/main.c
@@ -70,18 +70,36 @@
#include <rte_memcpy.h>
/* basic constants used in application */
-#define NUM_QUEUES 128
-
-#define NUM_MBUFS 64*1024
+#define MAX_QUEUES 1024
+/*
+ * 1024 queues require to meet the needs of a large number of vmdq_pools.
+ * (RX/TX_queue_nb * RX/TX_ring_descriptors_nb) per port.
+ */
+#define NUM_MBUFS_PER_PORT (MAX_QUEUES * RTE_MAX(RTE_TEST_RX_DESC_DEFAULT, \
+ RTE_TEST_TX_DESC_DEFAULT))
#define MBUF_CACHE_SIZE 64
+#define MAX_PKT_BURST 32
+
+/*
+ * Configurable number of RX/TX ring descriptors
+ */
+#define RTE_TEST_RX_DESC_DEFAULT 128
+#define RTE_TEST_TX_DESC_DEFAULT 512
+
#define INVALID_PORT_ID 0xFF
/* mask of enabled ports */
-static uint32_t enabled_port_mask = 0;
+static uint32_t enabled_port_mask;
+static uint8_t ports[RTE_MAX_ETHPORTS];
+static unsigned num_ports;
-/* number of pools (if user does not specify any, 16 by default */
-static enum rte_eth_nb_pools num_pools = ETH_16_POOLS;
+/* number of pools (if user does not specify any, 32 by default */
+static enum rte_eth_nb_pools num_pools = ETH_32_POOLS;
+static enum rte_eth_nb_tcs num_tcs = ETH_4_TCS;
+static uint16_t num_queues, num_vmdq_queues;
+static uint16_t vmdq_pool_base, vmdq_queue_base;
+static uint8_t rss_enable;
/* empty vmdq+dcb configuration structure. Filled in programatically */
static const struct rte_eth_conf vmdq_dcb_conf_default = {
@@ -94,29 +112,44 @@ static const struct rte_eth_conf vmdq_dcb_conf_default = {
.jumbo_frame = 0, /**< Jumbo Frame Support disabled */
},
.txmode = {
- .mq_mode = ETH_MQ_TX_NONE,
+ .mq_mode = ETH_MQ_TX_VMDQ_DCB,
},
+ /*
+ * should be overridden separately in code with
+ * appropriate values
+ */
.rx_adv_conf = {
- /*
- * should be overridden separately in code with
- * appropriate values
- */
.vmdq_dcb_conf = {
- .nb_queue_pools = ETH_16_POOLS,
+ .nb_queue_pools = ETH_32_POOLS,
.enable_default_pool = 0,
.default_pool = 0,
.nb_pool_maps = 0,
.pool_map = {{0, 0},},
.dcb_tc = {0},
},
+ .dcb_rx_conf = {
+ .nb_tcs = ETH_4_TCS,
+ /** Traffic class each UP mapped to. */
+ .dcb_tc = {0},
+ },
+ .vmdq_rx_conf = {
+ .nb_queue_pools = ETH_32_POOLS,
+ .enable_default_pool = 0,
+ .default_pool = 0,
+ .nb_pool_maps = 0,
+ .pool_map = {{0, 0},},
+ },
+ },
+ .tx_adv_conf = {
+ .vmdq_dcb_tx_conf = {
+ .nb_queue_pools = ETH_32_POOLS,
+ .dcb_tc = {0},
+ },
},
};
-static uint8_t ports[RTE_MAX_ETHPORTS];
-static unsigned num_ports = 0;
-
/* array used for printing out statistics */
-volatile unsigned long rxPackets[ NUM_QUEUES ] = {0};
+volatile unsigned long rxPackets[MAX_QUEUES] = {0};
const uint16_t vlan_tags[] = {
0, 1, 2, 3, 4, 5, 6, 7,
@@ -125,30 +158,64 @@ const uint16_t vlan_tags[] = {
24, 25, 26, 27, 28, 29, 30, 31
};
+const uint16_t num_vlans = RTE_DIM(vlan_tags);
+/* pool mac addr template, pool mac addr is like: 52 54 00 12 port# pool# */
+static struct ether_addr pool_addr_template = {
+ .addr_bytes = {0x52, 0x54, 0x00, 0x12, 0x00, 0x00}
+};
+
+/* ethernet addresses of ports */
+static struct ether_addr vmdq_ports_eth_addr[RTE_MAX_ETHPORTS];
+
/* Builds up the correct configuration for vmdq+dcb based on the vlan tags array
* given above, and the number of traffic classes available for use. */
static inline int
-get_eth_conf(struct rte_eth_conf *eth_conf, enum rte_eth_nb_pools num_pools)
+get_eth_conf(struct rte_eth_conf *eth_conf)
{
struct rte_eth_vmdq_dcb_conf conf;
- unsigned i;
-
- if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS ) return -1;
-
- conf.nb_queue_pools = num_pools;
+ struct rte_eth_vmdq_rx_conf vmdq_conf;
+ struct rte_eth_dcb_rx_conf dcb_conf;
+ struct rte_eth_vmdq_dcb_tx_conf tx_conf;
+ uint8_t i;
+
+ conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
+ vmdq_conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
+ tx_conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
+ conf.nb_pool_maps = num_pools;
+ vmdq_conf.nb_pool_maps = num_pools;
conf.enable_default_pool = 0;
+ vmdq_conf.enable_default_pool = 0;
conf.default_pool = 0; /* set explicit value, even if not used */
- conf.nb_pool_maps = sizeof( vlan_tags )/sizeof( vlan_tags[ 0 ]);
- for (i = 0; i < conf.nb_pool_maps; i++){
- conf.pool_map[i].vlan_id = vlan_tags[ i ];
- conf.pool_map[i].pools = 1 << (i % num_pools);
+ vmdq_conf.default_pool = 0;
+
+ for (i = 0; i < conf.nb_pool_maps; i++) {
+ conf.pool_map[i].vlan_id = vlan_tags[i];
+ vmdq_conf.pool_map[i].vlan_id = vlan_tags[i];
+ conf.pool_map[i].pools = 1UL << i;
+ vmdq_conf.pool_map[i].pools = 1UL << i;
}
for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++){
- conf.dcb_tc[i] = (uint8_t)(i % (NUM_QUEUES/num_pools));
+ conf.dcb_tc[i] = i % num_tcs;
+ dcb_conf.dcb_tc[i] = i % num_tcs;
+ tx_conf.dcb_tc[i] = i % num_tcs;
}
+ dcb_conf.nb_tcs = (enum rte_eth_nb_tcs)num_tcs;
(void)(rte_memcpy(eth_conf, &vmdq_dcb_conf_default, sizeof(*eth_conf)));
(void)(rte_memcpy(&eth_conf->rx_adv_conf.vmdq_dcb_conf, &conf,
- sizeof(eth_conf->rx_adv_conf.vmdq_dcb_conf)));
+ sizeof(conf)));
+ (void)(rte_memcpy(&eth_conf->rx_adv_conf.dcb_rx_conf, &dcb_conf,
+ sizeof(dcb_conf)));
+ (void)(rte_memcpy(&eth_conf->rx_adv_conf.vmdq_rx_conf, &vmdq_conf,
+ sizeof(vmdq_conf)));
+ (void)(rte_memcpy(&eth_conf->tx_adv_conf.vmdq_dcb_tx_conf, &tx_conf,
+ sizeof(tx_conf)));
+ if (rss_enable) {
+ eth_conf->rxmode.mq_mode = ETH_MQ_RX_VMDQ_DCB_RSS;
+ eth_conf->rx_adv_conf.rss_conf.rss_hf = ETH_RSS_IP |
+ ETH_RSS_UDP |
+ ETH_RSS_TCP |
+ ETH_RSS_SCTP;
+ }
return 0;
}
@@ -159,51 +226,137 @@ get_eth_conf(struct rte_eth_conf *eth_conf, enum rte_eth_nb_pools num_pools)
static inline int
port_init(uint8_t port, struct rte_mempool *mbuf_pool)
{
- struct rte_eth_conf port_conf;
- const uint16_t rxRings = ETH_VMDQ_DCB_NUM_QUEUES,
- txRings = (uint16_t)rte_lcore_count();
- const uint16_t rxRingSize = 128, txRingSize = 512;
+ struct rte_eth_dev_info dev_info;
+ struct rte_eth_conf port_conf = {0};
+ const uint16_t rxRingSize = RTE_TEST_RX_DESC_DEFAULT;
+ const uint16_t txRingSize = RTE_TEST_TX_DESC_DEFAULT;
int retval;
uint16_t q;
+ uint16_t queues_per_pool;
+ uint32_t max_nb_pools;
+
+ /*
+ * The max pool number from dev_info will be used to validate the pool
+ * number specified in cmd line
+ */
+ rte_eth_dev_info_get(port, &dev_info);
+ max_nb_pools = (uint32_t)dev_info.max_vmdq_pools;
+ /*
+ * We allow to process part of VMDQ pools specified by num_pools in
+ * command line.
+ */
+ if (num_pools > max_nb_pools) {
+ printf("num_pools %d >max_nb_pools %d\n",
+ num_pools, max_nb_pools);
+ return -1;
+ }
- retval = get_eth_conf(&port_conf, num_pools);
+ /*
+ * NIC queues are divided into pf queues and vmdq queues.
+ * There is assumption here all ports have the same configuration!
+ */
+ vmdq_queue_base = dev_info.vmdq_queue_base;
+ vmdq_pool_base = dev_info.vmdq_pool_base;
+ printf("vmdq queue base: %d pool base %d\n",
+ vmdq_queue_base, vmdq_pool_base);
+ if (vmdq_pool_base == 0) {
+ num_vmdq_queues = dev_info.max_rx_queues;
+ num_queues = dev_info.max_rx_queues;
+ if (num_tcs != num_vmdq_queues / num_pools) {
+ printf("nb_tcs %d is invalid considering with"
+ " nb_pools %d, nb_tcs * nb_pools should = %d\n",
+ num_tcs, num_pools, num_vmdq_queues);
+ return -1;
+ }
+ } else {
+ queues_per_pool = dev_info.vmdq_queue_num /
+ dev_info.max_vmdq_pools;
+ if (num_tcs > queues_per_pool) {
+ printf("num_tcs %d > num of queues per pool %d\n",
+ num_tcs, queues_per_pool);
+ return -1;
+ }
+ num_vmdq_queues = num_pools * queues_per_pool;
+ num_queues = vmdq_queue_base + num_vmdq_queues;
+ printf("Configured vmdq pool num: %u,"
+ " each vmdq pool has %u queues\n",
+ num_pools, queues_per_pool);
+ }
+
+ if (port >= rte_eth_dev_count())
+ return -1;
+
+ retval = get_eth_conf(&port_conf);
if (retval < 0)
return retval;
- if (port >= rte_eth_dev_count()) return -1;
-
- retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
+ /*
+ * Though in this example, all queues including pf queues are setup.
+ * This is because VMDQ queues doesn't always start from zero, and the
+ * PMD layer doesn't support selectively initialising part of rx/tx
+ * queues.
+ */
+ retval = rte_eth_dev_configure(port, num_queues, num_queues, &port_conf);
if (retval != 0)
return retval;
- for (q = 0; q < rxRings; q ++) {
+ for (q = 0; q < num_queues; q++) {
retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
- rte_eth_dev_socket_id(port),
- NULL,
- mbuf_pool);
- if (retval < 0)
+ rte_eth_dev_socket_id(port),
+ NULL,
+ mbuf_pool);
+ if (retval < 0) {
+ printf("initialize rx queue %d failed\n", q);
return retval;
+ }
}
- for (q = 0; q < txRings; q ++) {
+ for (q = 0; q < num_queues; q++) {
retval = rte_eth_tx_queue_setup(port, q, txRingSize,
- rte_eth_dev_socket_id(port),
- NULL);
- if (retval < 0)
+ rte_eth_dev_socket_id(port),
+ NULL);
+ if (retval < 0) {
+ printf("initialize tx queue %d failed\n", q);
return retval;
+ }
}
retval = rte_eth_dev_start(port);
- if (retval < 0)
+ if (retval < 0) {
+ printf("port %d start failed\n", port);
return retval;
+ }
- struct ether_addr addr;
- rte_eth_macaddr_get(port, &addr);
+ rte_eth_macaddr_get(port, &vmdq_ports_eth_addr[port]);
printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
" %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
(unsigned)port,
- addr.addr_bytes[0], addr.addr_bytes[1], addr.addr_bytes[2],
- addr.addr_bytes[3], addr.addr_bytes[4], addr.addr_bytes[5]);
+ vmdq_ports_eth_addr[port].addr_bytes[0],
+ vmdq_ports_eth_addr[port].addr_bytes[1],
+ vmdq_ports_eth_addr[port].addr_bytes[2],
+ vmdq_ports_eth_addr[port].addr_bytes[3],
+ vmdq_ports_eth_addr[port].addr_bytes[4],
+ vmdq_ports_eth_addr[port].addr_bytes[5]);
+
+ /* Set mac for each pool.*/
+ for (q = 0; q < num_pools; q++) {
+ struct ether_addr mac;
+
+ mac = pool_addr_template;
+ mac.addr_bytes[4] = port;
+ mac.addr_bytes[5] = q;
+ printf("Port %u vmdq pool %u set mac %02x:%02x:%02x:%02x:%02x:%02x\n",
+ port, q,
+ mac.addr_bytes[0], mac.addr_bytes[1],
+ mac.addr_bytes[2], mac.addr_bytes[3],
+ mac.addr_bytes[4], mac.addr_bytes[5]);
+ retval = rte_eth_dev_mac_addr_add(port, &mac,
+ q + vmdq_pool_base);
+ if (retval) {
+ printf("mac addr add failed at pool %d\n", q);
+ return retval;
+ }
+ }
return 0;
}
@@ -229,6 +382,28 @@ vmdq_parse_num_pools(const char *q_arg)
return 0;
}
+/* Check num_tcs parameter and set it if OK*/
+static int
+vmdq_parse_num_tcs(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (n != 4 && n != 8)
+ return -1;
+ if (n == 4)
+ num_tcs = ETH_4_TCS;
+ else
+ num_tcs = ETH_8_TCS;
+
+ return 0;
+}
+
static int
parse_portmask(const char *portmask)
{
@@ -251,7 +426,9 @@ static void
vmdq_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK]\n"
- " --nb-pools NP: number of pools (16 default, 32)\n",
+ " --nb-pools NP: number of pools (32 default, 16)\n"
+ " --nb-tcs NP: number of TCs (4 default, 8)\n"
+ " --enable-rss: enable RSS (disabled by default)\n",
prgname);
}
@@ -265,11 +442,14 @@ vmdq_parse_args(int argc, char **argv)
const char *prgname = argv[0];
static struct option long_option[] = {
{"nb-pools", required_argument, NULL, 0},
+ {"nb-tcs", required_argument, NULL, 0},
+ {"enable-rss", 0, NULL, 0},
{NULL, 0, 0, 0}
};
/* Parse command line */
- while ((opt = getopt_long(argc, argv, "p:",long_option,&option_index)) != EOF) {
+ while ((opt = getopt_long(argc, argv, "p:", long_option,
+ &option_index)) != EOF) {
switch (opt) {
/* portmask */
case 'p':
@@ -281,43 +461,71 @@ vmdq_parse_args(int argc, char **argv)
}
break;
case 0:
- if (vmdq_parse_num_pools(optarg) == -1){
- printf("invalid number of pools\n");
- vmdq_usage(prgname);
- return -1;
+ if (!strcmp(long_option[option_index].name, "nb-pools")) {
+ if (vmdq_parse_num_pools(optarg) == -1) {
+ printf("invalid number of pools\n");
+ return -1;
+ }
}
+
+ if (!strcmp(long_option[option_index].name, "nb-tcs")) {
+ if (vmdq_parse_num_tcs(optarg) == -1) {
+ printf("invalid number of tcs\n");
+ return -1;
+ }
+ }
+
+ if (!strcmp(long_option[option_index].name, "enable-rss"))
+ rss_enable = 1;
break;
+
default:
vmdq_usage(prgname);
return -1;
}
}
- for(i = 0; i < RTE_MAX_ETHPORTS; i++)
- {
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
if (enabled_port_mask & (1 << i))
ports[num_ports++] = (uint8_t)i;
}
if (num_ports < 2 || num_ports % 2) {
printf("Current enabled port number is %u,"
- "but it should be even and at least 2\n",num_ports);
+ " but it should be even and at least 2\n", num_ports);
return -1;
}
return 0;
}
+static void
+update_mac_address(struct rte_mbuf *m, unsigned dst_port)
+{
+ struct ether_hdr *eth;
+ void *tmp;
+
+ eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ /* 02:00:00:00:00:xx */
+ tmp = &eth->d_addr.addr_bytes[0];
+ *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
+
+ /* src addr */
+ ether_addr_copy(&vmdq_ports_eth_addr[dst_port], &eth->s_addr);
+}
/* When we receive a HUP signal, print out our stats */
static void
sighup_handler(int signum)
{
- unsigned q;
- for (q = 0; q < NUM_QUEUES; q ++) {
- if (q % (NUM_QUEUES/num_pools) == 0)
- printf("\nPool %u: ", q/(NUM_QUEUES/num_pools));
- printf("%lu ", rxPackets[ q ]);
+ unsigned q = vmdq_queue_base;
+
+ for (; q < num_queues; q++) {
+ if (q % (num_vmdq_queues / num_pools) == 0)
+ printf("\nPool %u: ", (q - vmdq_queue_base) /
+ (num_vmdq_queues / num_pools));
+ printf("%lu ", rxPackets[q]);
}
printf("\nFinished handling signal %d\n", signum);
}
@@ -326,20 +534,43 @@ sighup_handler(int signum)
* Main thread that does the work, reading from INPUT_PORT
* and writing to OUTPUT_PORT
*/
-static __attribute__((noreturn)) int
+static int
lcore_main(void *arg)
{
const uintptr_t core_num = (uintptr_t)arg;
const unsigned num_cores = rte_lcore_count();
- uint16_t startQueue = (uint16_t)(core_num * (NUM_QUEUES/num_cores));
- uint16_t endQueue = (uint16_t)(startQueue + (NUM_QUEUES/num_cores));
+ uint16_t startQueue, endQueue;
uint16_t q, i, p;
+ const uint16_t quot = (uint16_t)(num_vmdq_queues / num_cores);
+ const uint16_t remainder = (uint16_t)(num_vmdq_queues % num_cores);
+
+
+ if (remainder) {
+ if (core_num < remainder) {
+ startQueue = (uint16_t)(core_num * (quot + 1));
+ endQueue = (uint16_t)(startQueue + quot + 1);
+ } else {
+ startQueue = (uint16_t)(core_num * quot + remainder);
+ endQueue = (uint16_t)(startQueue + quot);
+ }
+ } else {
+ startQueue = (uint16_t)(core_num * quot);
+ endQueue = (uint16_t)(startQueue + quot);
+ }
+ /* vmdq queue idx doesn't always start from zero.*/
+ startQueue += vmdq_queue_base;
+ endQueue += vmdq_queue_base;
printf("Core %u(lcore %u) reading queues %i-%i\n", (unsigned)core_num,
rte_lcore_id(), startQueue, endQueue - 1);
+ if (startQueue == endQueue) {
+ printf("lcore %u has nothing to do\n", (unsigned)core_num);
+ return 0;
+ }
+
for (;;) {
- struct rte_mbuf *buf[32];
+ struct rte_mbuf *buf[MAX_PKT_BURST];
const uint16_t buf_size = sizeof(buf) / sizeof(buf[0]);
for (p = 0; p < num_ports; p++) {
const uint8_t src = ports[p];
@@ -351,12 +582,17 @@ lcore_main(void *arg)
for (q = startQueue; q < endQueue; q++) {
const uint16_t rxCount = rte_eth_rx_burst(src,
q, buf, buf_size);
- if (rxCount == 0)
+
+ if (unlikely(rxCount == 0))
continue;
+
rxPackets[q] += rxCount;
+ for (i = 0; i < rxCount; i++)
+ update_mac_address(buf[i], dst);
+
const uint16_t txCount = rte_eth_tx_burst(dst,
- (uint16_t)core_num, buf, rxCount);
+ q, buf, rxCount);
if (txCount != rxCount) {
for (i = txCount; i < rxCount; i++)
rte_pktmbuf_free(buf[i]);
@@ -381,12 +617,12 @@ static unsigned check_ports_num(unsigned nb_ports)
num_ports = nb_ports;
}
- for (portid = 0; portid < num_ports; portid ++) {
+ for (portid = 0; portid < num_ports; portid++) {
if (ports[portid] >= nb_ports) {
printf("\nSpecified port ID(%u) exceeds max system port ID(%u)\n",
ports[portid], (nb_ports - 1));
ports[portid] = INVALID_PORT_ID;
- valid_num_ports --;
+ valid_num_ports--;
}
}
return valid_num_ports;
@@ -420,16 +656,16 @@ main(int argc, char *argv[])
rte_exit(EXIT_FAILURE, "Invalid VMDQ argument\n");
cores = rte_lcore_count();
- if ((cores & (cores - 1)) != 0 || cores > 128) {
+ if ((cores & (cores - 1)) != 0 || cores > RTE_MAX_LCORE) {
rte_exit(EXIT_FAILURE,"This program can only run on an even"
- "number of cores(1-128)\n\n");
+ " number of cores(1-%d)\n\n", RTE_MAX_LCORE);
}
nb_ports = rte_eth_dev_count();
if (nb_ports > RTE_MAX_ETHPORTS)
nb_ports = RTE_MAX_ETHPORTS;
- /*
+ /*
* Update the global var NUM_PORTS and global array PORTS
* and get value of var VALID_NUM_PORTS according to system ports number
*/
@@ -440,8 +676,9 @@ main(int argc, char *argv[])
rte_exit(EXIT_FAILURE, "Error with valid ports number is not even or less than 2\n");
}
- mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
- MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+ mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
+ NUM_MBUFS_PER_PORT * nb_ports, MBUF_CACHE_SIZE,
+ 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");