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37 #include <sys/queue.h>
42 #include <rte_common.h>
43 #include <rte_memory.h>
44 #include <rte_memzone.h>
45 #include <rte_tailq.h>
47 #include <rte_byteorder.h>
48 #include <rte_atomic.h>
49 #include <rte_launch.h>
50 #include <rte_per_lcore.h>
51 #include <rte_lcore.h>
52 #include <rte_branch_prediction.h>
53 #include <rte_debug.h>
56 #include <rte_mempool.h>
57 #include <rte_memcpy.h>
59 #include <rte_interrupts.h>
61 #include <rte_ether.h>
62 #include <rte_ethdev.h>
63 #include <rte_malloc.h>
64 #include <rte_fbk_hash.h>
65 #include <rte_string_fns.h>
66 #include <rte_cycles.h>
73 #define MBUFS_PER_CLIENT 1536
74 #define MBUFS_PER_PORT 1536
75 #define MBUF_CACHE_SIZE 512
76 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
77 #define RX_MBUF_DATA_SIZE 2048
78 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD)
80 #define RTE_MP_RX_DESC_DEFAULT 512
81 #define RTE_MP_TX_DESC_DEFAULT 512
82 #define CLIENT_QUEUE_RINGSIZE 128
87 * RX and TX Prefetch, Host, and Write-back threshold values should be
88 * carefully set for optimal performance. Consult the network
89 * controller's datasheet and supporting DPDK documentation for guidance
90 * on how these parameters should be set.
92 /* Default configuration for rx and tx thresholds etc. */
94 * These default values are optimized for use with the Intel(R) 82599 10 GbE
95 * Controller and the DPDK ixgbe PMD. Consider using other values for other
96 * network controllers and/or network drivers.
98 #define MP_DEFAULT_PTHRESH 36
99 #define MP_DEFAULT_RX_HTHRESH 8
100 #define MP_DEFAULT_TX_HTHRESH 0
101 #define MP_DEFAULT_WTHRESH 0
103 static const struct rte_eth_rxconf rx_conf_default = {
105 .pthresh = MP_DEFAULT_PTHRESH,
106 .hthresh = MP_DEFAULT_RX_HTHRESH,
107 .wthresh = MP_DEFAULT_WTHRESH,
111 static const struct rte_eth_txconf tx_conf_default = {
113 .pthresh = MP_DEFAULT_PTHRESH,
114 .hthresh = MP_DEFAULT_TX_HTHRESH,
115 .wthresh = MP_DEFAULT_WTHRESH,
117 .tx_free_thresh = 0, /* Use PMD default values */
118 .tx_rs_thresh = 0, /* Use PMD default values */
121 /* The mbuf pool for packet rx */
122 struct rte_mempool *pktmbuf_pool;
124 /* array of info/queues for clients */
125 struct client *clients = NULL;
127 /* the port details */
128 struct port_info *ports;
131 * Initialise the mbuf pool for packet reception for the NIC, and any other
132 * buffer pools needed by the app - currently none.
135 init_mbuf_pools(void)
137 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \
138 + (ports->num_ports * MBUFS_PER_PORT);
140 /* don't pass single-producer/single-consumer flags to mbuf create as it
141 * seems faster to use a cache instead */
142 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
143 PKTMBUF_POOL_NAME, num_mbufs);
144 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs,
145 MBUF_SIZE, MBUF_CACHE_SIZE,
146 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init,
147 NULL, rte_pktmbuf_init, NULL, rte_socket_id(), NO_FLAGS );
149 return (pktmbuf_pool == NULL); /* 0 on success */
153 * Initialise an individual port:
154 * - configure number of rx and tx rings
155 * - set up each rx ring, to pull from the main mbuf pool
156 * - set up each tx ring
157 * - start the port and report its status to stdout
160 init_port(uint8_t port_num)
162 /* for port configuration all features are off by default */
163 const struct rte_eth_conf port_conf = {
165 .mq_mode = ETH_MQ_RX_RSS
168 const uint16_t rx_rings = 1, tx_rings = num_clients;
169 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
170 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
175 printf("Port %u init ... ", (unsigned)port_num);
178 /* Standard DPDK port initialisation - config port, then set up
180 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
184 for (q = 0; q < rx_rings; q++) {
185 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
186 rte_eth_dev_socket_id(port_num), &rx_conf_default, pktmbuf_pool);
187 if (retval < 0) return retval;
190 for ( q = 0; q < tx_rings; q ++ ) {
191 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
192 rte_eth_dev_socket_id(port_num), &tx_conf_default);
193 if (retval < 0) return retval;
196 rte_eth_promiscuous_enable(port_num);
198 retval = rte_eth_dev_start(port_num);
199 if (retval < 0) return retval;
207 * Set up the DPDK rings which will be used to pass packets, via
208 * pointers, between the multi-process server and client processes.
209 * Each client needs one RX queue.
217 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
219 clients = rte_malloc("client details",
220 sizeof(*clients) * num_clients, 0);
222 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
224 for (i = 0; i < num_clients; i++) {
225 /* Create an RX queue for each client */
226 socket_id = rte_socket_id();
227 q_name = get_rx_queue_name(i);
228 clients[i].rx_q = rte_ring_create(q_name,
230 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
231 if (clients[i].rx_q == NULL)
232 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
237 /* Check the link status of all ports in up to 9s, and print them finally */
239 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
241 #define CHECK_INTERVAL 100 /* 100ms */
242 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
243 uint8_t portid, count, all_ports_up, print_flag = 0;
244 struct rte_eth_link link;
246 printf("\nChecking link status");
248 for (count = 0; count <= MAX_CHECK_TIME; count++) {
250 for (portid = 0; portid < port_num; portid++) {
251 if ((port_mask & (1 << ports->id[portid])) == 0)
253 memset(&link, 0, sizeof(link));
254 rte_eth_link_get_nowait(ports->id[portid], &link);
255 /* print link status if flag set */
256 if (print_flag == 1) {
257 if (link.link_status)
258 printf("Port %d Link Up - speed %u "
259 "Mbps - %s\n", ports->id[portid],
260 (unsigned)link.link_speed,
261 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
262 ("full-duplex") : ("half-duplex\n"));
264 printf("Port %d Link Down\n",
265 (uint8_t)ports->id[portid]);
268 /* clear all_ports_up flag if any link down */
269 if (link.link_status == 0) {
274 /* after finally printing all link status, get out */
278 if (all_ports_up == 0) {
281 rte_delay_ms(CHECK_INTERVAL);
284 /* set the print_flag if all ports up or timeout */
285 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
293 * Main init function for the multi-process server app,
294 * calls subfunctions to do each stage of the initialisation.
297 init(int argc, char *argv[])
300 const struct rte_memzone *mz;
301 uint8_t i, total_ports;
303 /* init EAL, parsing EAL args */
304 retval = rte_eal_init(argc, argv);
310 /* get total number of ports */
311 total_ports = rte_eth_dev_count();
313 /* set up array for port data */
314 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
315 rte_socket_id(), NO_FLAGS);
317 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
318 memset(mz->addr, 0, sizeof(*ports));
321 /* parse additional, application arguments */
322 retval = parse_app_args(total_ports, argc, argv);
326 /* initialise mbuf pools */
327 retval = init_mbuf_pools();
329 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
331 /* now initialise the ports we will use */
332 for (i = 0; i < ports->num_ports; i++) {
333 retval = init_port(ports->id[i]);
335 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
339 check_all_ports_link_status(ports->num_ports, (~0x0));
341 /* initialise the client queues/rings for inter-eu comms */