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38 #include <sys/queue.h>
43 #include <rte_common.h>
44 #include <rte_memory.h>
45 #include <rte_memzone.h>
46 #include <rte_tailq.h>
48 #include <rte_byteorder.h>
49 #include <rte_atomic.h>
50 #include <rte_launch.h>
51 #include <rte_per_lcore.h>
52 #include <rte_lcore.h>
53 #include <rte_branch_prediction.h>
54 #include <rte_debug.h>
57 #include <rte_mempool.h>
58 #include <rte_memcpy.h>
60 #include <rte_interrupts.h>
62 #include <rte_ether.h>
63 #include <rte_ethdev.h>
64 #include <rte_malloc.h>
65 #include <rte_hash_crc.h>
66 #include <rte_fbk_hash.h>
67 #include <rte_string_fns.h>
68 #include <rte_cycles.h>
71 #include "init_drivers.h"
76 #define MBUFS_PER_CLIENT 1536
77 #define MBUFS_PER_PORT 1536
78 #define MBUF_CACHE_SIZE 512
79 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
80 #define RX_MBUF_DATA_SIZE 2048
81 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD)
83 #define RTE_MP_RX_DESC_DEFAULT 512
84 #define RTE_MP_TX_DESC_DEFAULT 512
85 #define CLIENT_QUEUE_RINGSIZE 128
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. */
97 * These default values are optimized for use with the Intel(R) 82599 10 GbE
98 * Controller and the DPDK ixgbe PMD. Consider using other values for other
99 * network controllers and/or network drivers.
101 #define MP_DEFAULT_PTHRESH 36
102 #define MP_DEFAULT_RX_HTHRESH 8
103 #define MP_DEFAULT_TX_HTHRESH 0
104 #define MP_DEFAULT_WTHRESH 0
106 static const struct rte_eth_rxconf rx_conf_default = {
108 .pthresh = MP_DEFAULT_PTHRESH,
109 .hthresh = MP_DEFAULT_RX_HTHRESH,
110 .wthresh = MP_DEFAULT_WTHRESH,
114 static const struct rte_eth_txconf tx_conf_default = {
116 .pthresh = MP_DEFAULT_PTHRESH,
117 .hthresh = MP_DEFAULT_TX_HTHRESH,
118 .wthresh = MP_DEFAULT_WTHRESH,
120 .tx_free_thresh = 0, /* Use PMD default values */
121 .tx_rs_thresh = 0, /* Use PMD default values */
124 /* The mbuf pool for packet rx */
125 struct rte_mempool *pktmbuf_pool;
127 /* array of info/queues for clients */
128 struct client *clients = NULL;
130 /* the port details */
131 struct port_info *ports;
134 * Initialise the mbuf pool for packet reception for the NIC, and any other
135 * buffer pools needed by the app - currently none.
138 init_mbuf_pools(void)
140 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \
141 + (ports->num_ports * MBUFS_PER_PORT);
143 /* don't pass single-producer/single-consumer flags to mbuf create as it
144 * seems faster to use a cache instead */
145 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
146 PKTMBUF_POOL_NAME, num_mbufs);
147 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs,
148 MBUF_SIZE, MBUF_CACHE_SIZE,
149 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init,
150 NULL, rte_pktmbuf_init, NULL, SOCKET0, NO_FLAGS );
152 return (pktmbuf_pool == NULL); /* 0 on success */
156 * Initialise an individual port:
157 * - configure number of rx and tx rings
158 * - set up each rx ring, to pull from the main mbuf pool
159 * - set up each tx ring
160 * - start the port and report its status to stdout
163 init_port(uint8_t port_num)
165 /* for port configuration all features are off by default */
166 const struct rte_eth_conf port_conf = {
171 const uint16_t rx_rings = 1, tx_rings = num_clients;
172 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
173 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
178 printf("Port %u init ... ", (unsigned)port_num);
181 /* Standard DPDK port initialisation - config port, then set up
183 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
187 for (q = 0; q < rx_rings; q++) {
188 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
189 SOCKET0, &rx_conf_default, pktmbuf_pool);
190 if (retval < 0) return retval;
193 for ( q = 0; q < tx_rings; q ++ ) {
194 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
195 SOCKET0, &tx_conf_default);
196 if (retval < 0) return retval;
199 rte_eth_promiscuous_enable(port_num);
201 retval = rte_eth_dev_start(port_num);
202 if (retval < 0) return retval;
210 * Set up the DPDK rings which will be used to pass packets, via
211 * pointers, between the multi-process server and client processes.
212 * Each client needs one RX queue.
218 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
220 clients = rte_malloc("client details",
221 sizeof(*clients) * num_clients, 0);
223 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
225 for (i = 0; i < num_clients; i++) {
226 /* Create an RX queue for each client */
227 clients[i].rx_q = rte_ring_create(get_rx_queue_name(i),
229 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
230 if (clients[i].rx_q == NULL)
231 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
236 /* Check the link status of all ports in up to 9s, and print them finally */
238 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
240 #define CHECK_INTERVAL 100 /* 100ms */
241 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
242 uint8_t portid, count, all_ports_up, print_flag = 0;
243 struct rte_eth_link link;
245 printf("\nChecking link status");
247 for (count = 0; count <= MAX_CHECK_TIME; count++) {
249 for (portid = 0; portid < port_num; portid++) {
250 if ((port_mask & (1 << portid)) == 0)
252 memset(&link, 0, sizeof(link));
253 rte_eth_link_get_nowait(portid, &link);
254 /* print link status if flag set */
255 if (print_flag == 1) {
256 if (link.link_status)
257 printf("Port %d Link Up - speed %u "
258 "Mbps - %s\n", (uint8_t)portid,
259 (unsigned)link.link_speed,
260 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
261 ("full-duplex") : ("half-duplex\n"));
263 printf("Port %d Link Down\n",
267 /* clear all_ports_up flag if any link down */
268 if (link.link_status == 0) {
273 /* after finally printing all link status, get out */
277 if (all_ports_up == 0) {
280 rte_delay_ms(CHECK_INTERVAL);
283 /* set the print_flag if all ports up or timeout */
284 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
292 * Main init function for the multi-process server app,
293 * calls subfunctions to do each stage of the initialisation.
296 init(int argc, char *argv[])
299 const struct rte_memzone *mz;
300 uint8_t i, total_ports;
302 /* init EAL, parsing EAL args */
303 retval = rte_eal_init(argc, argv);
309 /* initialise the nic drivers */
310 retval = init_drivers();
312 rte_exit(EXIT_FAILURE, "Cannot initialise drivers\n");
314 /* get total number of ports */
315 total_ports = rte_eth_dev_count();
317 /* set up array for port data */
318 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
319 rte_socket_id(), NO_FLAGS);
321 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
322 memset(mz->addr, 0, sizeof(*ports));
325 /* parse additional, application arguments */
326 retval = parse_app_args(total_ports, argc, argv);
330 /* initialise mbuf pools */
331 retval = init_mbuf_pools();
333 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
335 /* now initialise the ports we will use */
336 for (i = 0; i < ports->num_ports; i++) {
337 retval = init_port(ports->id[i]);
339 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
343 check_all_ports_link_status(ports->num_ports, (~0x0));
345 /* initialise the client queues/rings for inter-eu comms */