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36 #include <sys/queue.h>
47 #include <rte_common.h>
49 #include <rte_memory.h>
50 #include <rte_memcpy.h>
51 #include <rte_memzone.h>
52 #include <rte_tailq.h>
54 #include <rte_per_lcore.h>
55 #include <rte_launch.h>
56 #include <rte_atomic.h>
57 #include <rte_cycles.h>
58 #include <rte_prefetch.h>
59 #include <rte_lcore.h>
60 #include <rte_per_lcore.h>
61 #include <rte_branch_prediction.h>
62 #include <rte_interrupts.h>
64 #include <rte_random.h>
65 #include <rte_debug.h>
66 #include <rte_ether.h>
67 #include <rte_ethdev.h>
70 #include <rte_mempool.h>
72 #include <rte_memcpy.h>
76 /* basic constants used in application */
77 #define NUM_QUEUES 128
79 #define NUM_MBUFS 64*1024
80 #define MBUF_CACHE_SIZE 64
81 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
86 /* number of pools (if user does not specify any, 16 by default */
87 static enum rte_eth_nb_pools num_pools = ETH_16_POOLS;
90 * RX and TX Prefetch, Host, and Write-back threshold values should be
91 * carefully set for optimal performance. Consult the network
92 * controller's datasheet and supporting DPDK documentation for guidance
93 * on how these parameters should be set.
95 /* Default configuration for rx and tx thresholds etc. */
96 static const struct rte_eth_rxconf rx_conf_default = {
105 * These default values are optimized for use with the Intel(R) 82599 10 GbE
106 * Controller and the DPDK ixgbe PMD. Consider using other values for other
107 * network controllers and/or network drivers.
109 static const struct rte_eth_txconf tx_conf_default = {
115 .tx_free_thresh = 0, /* Use PMD default values */
116 .tx_rs_thresh = 0, /* Use PMD default values */
119 /* empty vmdq+dcb configuration structure. Filled in programatically */
120 static const struct rte_eth_conf vmdq_dcb_conf_default = {
122 .mq_mode = ETH_MQ_RX_VMDQ_DCB,
124 .header_split = 0, /**< Header Split disabled */
125 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
126 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
127 .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
130 .mq_mode = ETH_MQ_TX_NONE,
134 * should be overridden separately in code with
138 .nb_queue_pools = ETH_16_POOLS,
139 .enable_default_pool = 0,
142 .pool_map = {{0, 0},},
148 /* array used for printing out statistics */
149 volatile unsigned long rxPackets[ NUM_QUEUES ] = {0};
151 const uint16_t vlan_tags[] = {
152 0, 1, 2, 3, 4, 5, 6, 7,
153 8, 9, 10, 11, 12, 13, 14, 15,
154 16, 17, 18, 19, 20, 21, 22, 23,
155 24, 25, 26, 27, 28, 29, 30, 31
158 /* Builds up the correct configuration for vmdq+dcb based on the vlan tags array
159 * given above, and the number of traffic classes available for use. */
161 get_eth_conf(struct rte_eth_conf *eth_conf, enum rte_eth_nb_pools num_pools)
163 struct rte_eth_vmdq_dcb_conf conf;
166 if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS ) return -1;
168 conf.nb_queue_pools = num_pools;
169 conf.enable_default_pool = 0;
170 conf.default_pool = 0; /* set explicit value, even if not used */
171 conf.nb_pool_maps = sizeof( vlan_tags )/sizeof( vlan_tags[ 0 ]);
172 for (i = 0; i < conf.nb_pool_maps; i++){
173 conf.pool_map[i].vlan_id = vlan_tags[ i ];
174 conf.pool_map[i].pools = 1 << (i % num_pools);
176 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++){
177 conf.dcb_queue[i] = (uint8_t)(i % (NUM_QUEUES/num_pools));
179 (void)(rte_memcpy(eth_conf, &vmdq_dcb_conf_default, sizeof(*eth_conf)));
180 (void)(rte_memcpy(ð_conf->rx_adv_conf.vmdq_dcb_conf, &conf,
181 sizeof(eth_conf->rx_adv_conf.vmdq_dcb_conf)));
186 * Initialises a given port using global settings and with the rx buffers
187 * coming from the mbuf_pool passed as parameter
190 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
192 struct rte_eth_conf port_conf;
193 const uint16_t rxRings = ETH_VMDQ_DCB_NUM_QUEUES,
194 txRings = (uint16_t)rte_lcore_count();
195 const uint16_t rxRingSize = 128, txRingSize = 512;
199 retval = get_eth_conf(&port_conf, num_pools);
203 if (port >= rte_eth_dev_count()) return -1;
205 retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
209 for (q = 0; q < rxRings; q ++) {
210 retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
211 rte_eth_dev_socket_id(port), &rx_conf_default,
217 for (q = 0; q < txRings; q ++) {
218 retval = rte_eth_tx_queue_setup(port, q, txRingSize,
219 rte_eth_dev_socket_id(port), &tx_conf_default);
224 retval = rte_eth_dev_start(port);
231 /* Check num_pools parameter and set it if OK*/
233 vmdq_parse_num_pools(const char *q_arg)
238 /* parse number string */
239 n = strtol(q_arg, &end, 10);
240 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
242 if (n != 16 && n != 32)
245 num_pools = ETH_16_POOLS;
247 num_pools = ETH_32_POOLS;
254 vmdq_usage(const char *prgname)
256 printf("%s [EAL options] -- [-nb-pools NP]\n"
257 " -nb-pools NP: number of pools (16 default, 32)\n",
261 /* Parse the argument (num_pools) given in the command line of the application */
263 vmdq_parse_args(int argc, char **argv)
267 const char *prgname = argv[0];
269 static struct option long_option[] = {
270 {"nb-pools", required_argument, NULL, 0},
274 /* Parse command line */
275 while ((opt = getopt_long_only(argc, argv, "",long_option,&option_index)) != EOF) {
278 if (vmdq_parse_num_pools(optarg) == -1){
279 printf("invalid number of pools\n");
295 #ifndef RTE_EXEC_ENV_BAREMETAL
296 /* When we receive a HUP signal, print out our stats */
298 sighup_handler(int signum)
301 for (q = 0; q < NUM_QUEUES; q ++) {
302 if (q % (NUM_QUEUES/num_pools) == 0)
303 printf("\nPool %u: ", q/(NUM_QUEUES/num_pools));
304 printf("%lu ", rxPackets[ q ]);
306 printf("\nFinished handling signal %d\n", signum);
311 * Main thread that does the work, reading from INPUT_PORT
312 * and writing to OUTPUT_PORT
314 static __attribute__((noreturn)) int
315 lcore_main(void *arg)
317 const uintptr_t core_num = (uintptr_t)arg;
318 const unsigned num_cores = rte_lcore_count();
319 uint16_t startQueue = (uint16_t)(core_num * (NUM_QUEUES/num_cores));
320 uint16_t endQueue = (uint16_t)(startQueue + (NUM_QUEUES/num_cores));
323 printf("Core %u(lcore %u) reading queues %i-%i\n", (unsigned)core_num,
324 rte_lcore_id(), startQueue, endQueue - 1);
327 struct rte_mbuf *buf[32];
328 const uint16_t buf_size = sizeof(buf) / sizeof(buf[0]);
330 for (q = startQueue; q < endQueue; q++) {
331 const uint16_t rxCount = rte_eth_rx_burst(RX_PORT,
335 rxPackets[q] += rxCount;
337 const uint16_t txCount = rte_eth_tx_burst(TX_PORT,
338 (uint16_t)core_num, buf, rxCount);
339 if (txCount != rxCount) {
340 for (i = txCount; i < rxCount; i++)
341 rte_pktmbuf_free(buf[i]);
347 /* Main function, does initialisation and calls the per-lcore functions */
349 MAIN(int argc, char *argv[])
352 struct rte_mempool *mbuf_pool;
357 #ifndef RTE_EXEC_ENV_BAREMETAL
358 signal(SIGHUP, sighup_handler);
362 ret = rte_eal_init(argc, argv);
364 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
368 /* parse app arguments */
369 ret = vmdq_parse_args(argc, argv);
371 rte_exit(EXIT_FAILURE, "Invalid VMDQ argument\n");
373 if (rte_ixgbe_pmd_init() != 0 ||
374 rte_eal_pci_probe() != 0)
375 rte_exit(EXIT_FAILURE, "Error with NIC driver initialization\n");
377 cores = rte_lcore_count();
378 if ((cores & (cores - 1)) != 0 || cores > 16) {
379 rte_exit(EXIT_FAILURE,
380 "This program can only run on 2,4,8 or 16 cores\n\n");
383 mbuf_pool = rte_mempool_create("MBUF_POOL", NUM_MBUFS,
384 MBUF_SIZE, MBUF_CACHE_SIZE,
385 sizeof(struct rte_pktmbuf_pool_private),
386 rte_pktmbuf_pool_init, NULL,
387 rte_pktmbuf_init, NULL,
389 if (mbuf_pool == NULL)
390 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
392 if (port_init(RX_PORT, mbuf_pool) != 0 ||
393 port_init(TX_PORT, mbuf_pool) != 0)
394 rte_exit(EXIT_FAILURE, "Cannot initialize network ports\n");
396 /* call lcore_main() on every slave lcore */
398 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
399 rte_eal_remote_launch(lcore_main, (void*)i++, lcore_id);
401 /* call on master too */
402 (void) lcore_main((void*)i);