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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 */
80 #define NUM_QUEUES 128
82 #define NUM_MBUFS 64*1024
83 #define MBUF_CACHE_SIZE 64
84 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
89 /* number of pools (if user does not specify any, 16 by default */
90 static enum rte_eth_nb_pools num_pools = ETH_16_POOLS;
93 * RX and TX Prefetch, Host, and Write-back threshold values should be
94 * carefully set for optimal performance. Consult the network
95 * controller's datasheet and supporting DPDK documentation for guidance
96 * on how these parameters should be set.
98 /* Default configuration for rx and tx thresholds etc. */
99 static const struct rte_eth_rxconf rx_conf_default = {
108 * These default values are optimized for use with the Intel(R) 82599 10 GbE
109 * Controller and the DPDK ixgbe PMD. Consider using other values for other
110 * network controllers and/or network drivers.
112 static const struct rte_eth_txconf tx_conf_default = {
118 .tx_free_thresh = 0, /* Use PMD default values */
119 .tx_rs_thresh = 0, /* Use PMD default values */
122 /* empty vmdq+dcb configuration structure. Filled in programatically */
123 static const struct rte_eth_conf vmdq_dcb_conf_default = {
125 .mq_mode = ETH_VMDQ_DCB,
127 .header_split = 0, /**< Header Split disabled */
128 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
129 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
130 .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
133 .mq_mode = ETH_DCB_NONE,
137 * should be overridden separately in code with
141 .nb_queue_pools = ETH_16_POOLS,
142 .enable_default_pool = 0,
145 .pool_map = {{0, 0},},
151 /* array used for printing out statistics */
152 volatile unsigned long rxPackets[ NUM_QUEUES ] = {0};
154 const uint16_t vlan_tags[] = {
155 0, 1, 2, 3, 4, 5, 6, 7,
156 8, 9, 10, 11, 12, 13, 14, 15,
157 16, 17, 18, 19, 20, 21, 22, 23,
158 24, 25, 26, 27, 28, 29, 30, 31
161 /* Builds up the correct configuration for vmdq+dcb based on the vlan tags array
162 * given above, and the number of traffic classes available for use. */
164 get_eth_conf(struct rte_eth_conf *eth_conf, enum rte_eth_nb_pools num_pools)
166 struct rte_eth_vmdq_dcb_conf conf;
169 if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS ) return -1;
171 conf.nb_queue_pools = num_pools;
172 conf.enable_default_pool = 0;
173 conf.default_pool = 0; /* set explicit value, even if not used */
174 conf.nb_pool_maps = sizeof( vlan_tags )/sizeof( vlan_tags[ 0 ]);
175 for (i = 0; i < conf.nb_pool_maps; i++){
176 conf.pool_map[i].vlan_id = vlan_tags[ i ];
177 conf.pool_map[i].pools = 1 << (i % num_pools);
179 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++){
180 conf.dcb_queue[i] = (uint8_t)(i % (NUM_QUEUES/num_pools));
182 (void)(rte_memcpy(eth_conf, &vmdq_dcb_conf_default, sizeof(*eth_conf)));
183 (void)(rte_memcpy(ð_conf->rx_adv_conf.vmdq_dcb_conf, &conf,
184 sizeof(eth_conf->rx_adv_conf.vmdq_dcb_conf)));
189 * Initialises a given port using global settings and with the rx buffers
190 * coming from the mbuf_pool passed as parameter
193 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
195 struct rte_eth_conf port_conf;
196 const uint16_t rxRings = ETH_VMDQ_DCB_NUM_QUEUES,
197 txRings = (uint16_t)rte_lcore_count();
198 const uint16_t rxRingSize = 128, txRingSize = 512;
202 retval = get_eth_conf(&port_conf, num_pools);
206 if (port >= rte_eth_dev_count()) return -1;
208 retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
212 for (q = 0; q < rxRings; q ++) {
213 retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
214 SOCKET0, &rx_conf_default,
220 for (q = 0; q < txRings; q ++) {
221 retval = rte_eth_tx_queue_setup(port, q, txRingSize,
222 SOCKET0, &tx_conf_default);
227 retval = rte_eth_dev_start(port);
234 /* Check num_pools parameter and set it if OK*/
236 vmdq_parse_num_pools(const char *q_arg)
241 /* parse number string */
242 n = strtol(q_arg, &end, 10);
243 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
245 if (n != 16 && n != 32)
248 num_pools = ETH_16_POOLS;
250 num_pools = ETH_32_POOLS;
257 vmdq_usage(const char *prgname)
259 printf("%s [EAL options] -- [-nb-pools NP]\n"
260 " -nb-pools NP: number of pools (16 default, 32)\n",
264 /* Parse the argument (num_pools) given in the command line of the application */
266 vmdq_parse_args(int argc, char **argv)
270 const char *prgname = argv[0];
272 static struct option long_option[] = {
273 {"nb-pools", required_argument, NULL, 0},
277 /* Parse command line */
278 while ((opt = getopt_long_only(argc, argv, "",long_option,&option_index)) != EOF) {
281 if (vmdq_parse_num_pools(optarg) == -1){
282 printf("invalid number of pools\n");
298 #ifndef RTE_EXEC_ENV_BAREMETAL
299 /* When we receive a HUP signal, print out our stats */
301 sighup_handler(int signum)
304 for (q = 0; q < NUM_QUEUES; q ++) {
305 if (q % (NUM_QUEUES/num_pools) == 0)
306 printf("\nPool %u: ", q/(NUM_QUEUES/num_pools));
307 printf("%lu ", rxPackets[ q ]);
309 printf("\nFinished handling signal %d\n", signum);
314 * Main thread that does the work, reading from INPUT_PORT
315 * and writing to OUTPUT_PORT
317 static __attribute__((noreturn)) int
318 lcore_main(void *arg)
320 const uintptr_t core_num = (uintptr_t)arg;
321 const unsigned num_cores = rte_lcore_count();
322 uint16_t startQueue = (uint16_t)(core_num * (NUM_QUEUES/num_cores));
323 uint16_t endQueue = (uint16_t)(startQueue + (NUM_QUEUES/num_cores));
326 printf("Core %u(lcore %u) reading queues %i-%i\n", (unsigned)core_num,
327 rte_lcore_id(), startQueue, endQueue - 1);
330 struct rte_mbuf *buf[32];
331 const uint16_t buf_size = sizeof(buf) / sizeof(buf[0]);
333 for (q = startQueue; q < endQueue; q++) {
334 const uint16_t rxCount = rte_eth_rx_burst(RX_PORT,
338 rxPackets[q] += rxCount;
340 const uint16_t txCount = rte_eth_tx_burst(TX_PORT,
341 (uint16_t)core_num, buf, rxCount);
342 if (txCount != rxCount) {
343 for (i = txCount; i < rxCount; i++)
344 rte_pktmbuf_free(buf[i]);
350 /* Main function, does initialisation and calls the per-lcore functions */
352 MAIN(int argc, char *argv[])
355 struct rte_mempool *mbuf_pool;
360 #ifndef RTE_EXEC_ENV_BAREMETAL
361 signal(SIGHUP, sighup_handler);
365 ret = rte_eal_init(argc, argv);
367 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
371 /* parse app arguments */
372 ret = vmdq_parse_args(argc, argv);
374 rte_exit(EXIT_FAILURE, "Invalid VMDQ argument\n");
376 if (rte_ixgbe_pmd_init() != 0 ||
377 rte_eal_pci_probe() != 0)
378 rte_exit(EXIT_FAILURE, "Error with NIC driver initialization\n");
380 cores = rte_lcore_count();
381 if ((cores & (cores - 1)) != 0 || cores > 16) {
382 rte_exit(EXIT_FAILURE,
383 "This program can only run on 2,4,8 or 16 cores\n\n");
386 mbuf_pool = rte_mempool_create("MBUF_POOL", NUM_MBUFS,
387 MBUF_SIZE, MBUF_CACHE_SIZE,
388 sizeof(struct rte_pktmbuf_pool_private),
389 rte_pktmbuf_pool_init, NULL,
390 rte_pktmbuf_init, NULL,
392 if (mbuf_pool == NULL)
393 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
395 if (port_init(RX_PORT, mbuf_pool) != 0 ||
396 port_init(TX_PORT, mbuf_pool) != 0)
397 rte_exit(EXIT_FAILURE, "Cannot initialize network ports\n");
399 /* call lcore_main() on every slave lcore */
401 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
402 rte_eal_remote_launch(lcore_main, (void*)i++, lcore_id);
404 /* call on master too */
405 (void) lcore_main((void*)i);