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37 #include <sys/queue.h>
42 #include <rte_common.h>
43 #include <rte_memory.h>
44 #include <rte_memzone.h>
46 #include <rte_byteorder.h>
47 #include <rte_atomic.h>
48 #include <rte_launch.h>
49 #include <rte_per_lcore.h>
50 #include <rte_lcore.h>
51 #include <rte_branch_prediction.h>
52 #include <rte_debug.h>
55 #include <rte_mempool.h>
56 #include <rte_memcpy.h>
58 #include <rte_interrupts.h>
60 #include <rte_ether.h>
61 #include <rte_ethdev.h>
62 #include <rte_malloc.h>
63 #include <rte_string_fns.h>
64 #include <rte_cycles.h>
72 #define MBUFS_PER_NODE 1536
73 #define MBUFS_PER_PORT 1536
74 #define MBUF_CACHE_SIZE 512
76 #define RTE_MP_RX_DESC_DEFAULT 512
77 #define RTE_MP_TX_DESC_DEFAULT 512
78 #define NODE_QUEUE_RINGSIZE 128
82 /* The mbuf pool for packet rx */
83 struct rte_mempool *pktmbuf_pool;
85 /* array of info/queues for nodes */
89 struct rte_efd_table *efd_table;
91 /* Shared info between server and nodes */
92 struct shared_info *info;
95 * Initialise the mbuf pool for packet reception for the NIC, and any other
96 * buffer pools needed by the app - currently none.
101 const unsigned int num_mbufs = (num_nodes * MBUFS_PER_NODE) +
102 (info->num_ports * MBUFS_PER_PORT);
105 * Don't pass single-producer/single-consumer flags to mbuf create as it
106 * seems faster to use a cache instead
108 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
109 PKTMBUF_POOL_NAME, num_mbufs);
110 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
111 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
113 return pktmbuf_pool == NULL; /* 0 on success */
117 * Initialise an individual port:
118 * - configure number of rx and tx rings
119 * - set up each rx ring, to pull from the main mbuf pool
120 * - set up each tx ring
121 * - start the port and report its status to stdout
124 init_port(uint8_t port_num)
126 /* for port configuration all features are off by default */
127 const struct rte_eth_conf port_conf = {
129 .mq_mode = ETH_MQ_RX_RSS
132 const uint16_t rx_rings = 1, tx_rings = num_nodes;
133 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
134 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
139 printf("Port %u init ... ", (unsigned int)port_num);
143 * Standard DPDK port initialisation - config port, then set up
146 retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, &port_conf);
150 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size,
155 for (q = 0; q < rx_rings; q++) {
156 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
157 rte_eth_dev_socket_id(port_num),
163 for (q = 0; q < tx_rings; q++) {
164 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
165 rte_eth_dev_socket_id(port_num),
171 rte_eth_promiscuous_enable(port_num);
173 retval = rte_eth_dev_start(port_num);
183 * Set up the DPDK rings which will be used to pass packets, via
184 * pointers, between the multi-process server and node processes.
185 * Each node needs one RX queue.
191 unsigned int socket_id;
193 const unsigned int ringsize = NODE_QUEUE_RINGSIZE;
195 nodes = rte_malloc("node details",
196 sizeof(*nodes) * num_nodes, 0);
198 rte_exit(EXIT_FAILURE, "Cannot allocate memory for "
199 "node program details\n");
201 for (i = 0; i < num_nodes; i++) {
202 /* Create an RX queue for each node */
203 socket_id = rte_socket_id();
204 q_name = get_rx_queue_name(i);
205 nodes[i].rx_q = rte_ring_create(q_name,
207 RING_F_SP_ENQ | RING_F_SC_DEQ);
208 if (nodes[i].rx_q == NULL)
209 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue "
216 * Create EFD table which will contain all the flows
217 * that will be distributed among the nodes
220 create_efd_table(void)
222 uint8_t socket_id = rte_socket_id();
225 efd_table = rte_efd_create("flow table", num_flows * 2, sizeof(uint32_t),
226 1 << socket_id, socket_id);
228 if (efd_table == NULL)
229 rte_exit(EXIT_FAILURE, "Problem creating the flow table\n");
233 populate_efd_table(void)
238 uint8_t socket_id = rte_socket_id();
241 /* Add flows in table */
242 for (i = 0; i < num_flows; i++) {
243 node_id = i % num_nodes;
245 ip_dst = rte_cpu_to_be_32(i);
246 ret = rte_efd_update(efd_table, socket_id,
247 (void *)&ip_dst, (efd_value_t)node_id);
249 rte_exit(EXIT_FAILURE, "Unable to add entry %u in "
253 printf("EFD table: Adding 0x%x keys\n", num_flows);
256 /* Check the link status of all ports in up to 9s, and print them finally */
258 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
260 #define CHECK_INTERVAL 100 /* 100ms */
261 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
262 uint8_t portid, count, all_ports_up, print_flag = 0;
263 struct rte_eth_link link;
265 printf("\nChecking link status");
267 for (count = 0; count <= MAX_CHECK_TIME; count++) {
269 for (portid = 0; portid < port_num; portid++) {
270 if ((port_mask & (1 << info->id[portid])) == 0)
272 memset(&link, 0, sizeof(link));
273 rte_eth_link_get_nowait(info->id[portid], &link);
274 /* print link status if flag set */
275 if (print_flag == 1) {
276 if (link.link_status)
277 printf("Port %d Link Up - speed %u "
278 "Mbps - %s\n", info->id[portid],
279 (unsigned int)link.link_speed,
280 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
281 ("full-duplex") : ("half-duplex\n"));
283 printf("Port %d Link Down\n",
284 (uint8_t)info->id[portid]);
287 /* clear all_ports_up flag if any link down */
288 if (link.link_status == ETH_LINK_DOWN) {
293 /* after finally printing all link status, get out */
297 if (all_ports_up == 0) {
300 rte_delay_ms(CHECK_INTERVAL);
303 /* set the print_flag if all ports up or timeout */
304 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
312 * Main init function for the multi-process server app,
313 * calls subfunctions to do each stage of the initialisation.
316 init(int argc, char *argv[])
319 const struct rte_memzone *mz;
320 uint8_t i, total_ports;
322 /* init EAL, parsing EAL args */
323 retval = rte_eal_init(argc, argv);
329 /* get total number of ports */
330 total_ports = rte_eth_dev_count();
332 /* set up array for port data */
333 mz = rte_memzone_reserve(MZ_SHARED_INFO, sizeof(*info),
334 rte_socket_id(), NO_FLAGS);
336 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone "
337 "for port information\n");
338 memset(mz->addr, 0, sizeof(*info));
341 /* parse additional, application arguments */
342 retval = parse_app_args(total_ports, argc, argv);
346 /* initialise mbuf pools */
347 retval = init_mbuf_pools();
349 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
351 /* now initialise the ports we will use */
352 for (i = 0; i < info->num_ports; i++) {
353 retval = init_port(info->id[i]);
355 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
359 check_all_ports_link_status(info->num_ports, (~0x0));
361 /* initialise the node queues/rings for inter-eu comms */
364 /* Create the EFD table */
367 /* Populate the EFD table */
368 populate_efd_table();
370 /* Share the total number of nodes */
371 info->num_nodes = num_nodes;
373 /* Share the total number of flows */
374 info->num_flows = num_flows;