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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>
69 #include "init_drivers.h"
74 #define MBUFS_PER_CLIENT 1536
75 #define MBUFS_PER_PORT 1536
76 #define MBUF_CACHE_SIZE 512
77 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
78 #define RX_MBUF_DATA_SIZE 2048
79 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD)
81 #define RTE_MP_RX_DESC_DEFAULT 512
82 #define RTE_MP_TX_DESC_DEFAULT 512
83 #define CLIENT_QUEUE_RINGSIZE 128
88 * RX and TX Prefetch, Host, and Write-back threshold values should be
89 * carefully set for optimal performance. Consult the network
90 * controller's datasheet and supporting DPDK documentation for guidance
91 * on how these parameters should be set.
93 /* Default configuration for rx and tx thresholds etc. */
95 * These default values are optimized for use with the Intel(R) 82599 10 GbE
96 * Controller and the DPDK ixgbe PMD. Consider using other values for other
97 * network controllers and/or network drivers.
99 #define MP_DEFAULT_PTHRESH 36
100 #define MP_DEFAULT_RX_HTHRESH 8
101 #define MP_DEFAULT_TX_HTHRESH 0
102 #define MP_DEFAULT_WTHRESH 0
104 static const struct rte_eth_rxconf rx_conf_default = {
106 .pthresh = MP_DEFAULT_PTHRESH,
107 .hthresh = MP_DEFAULT_RX_HTHRESH,
108 .wthresh = MP_DEFAULT_WTHRESH,
112 static const struct rte_eth_txconf tx_conf_default = {
114 .pthresh = MP_DEFAULT_PTHRESH,
115 .hthresh = MP_DEFAULT_TX_HTHRESH,
116 .wthresh = MP_DEFAULT_WTHRESH,
118 .tx_free_thresh = 0, /* Use PMD default values */
119 .tx_rs_thresh = 0, /* Use PMD default values */
122 /* The mbuf pool for packet rx */
123 struct rte_mempool *pktmbuf_pool;
125 /* array of info/queues for clients */
126 struct client *clients = NULL;
128 /* the port details */
129 struct port_info *ports;
132 * Initialise the mbuf pool for packet reception for the NIC, and any other
133 * buffer pools needed by the app - currently none.
136 init_mbuf_pools(void)
138 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \
139 + (ports->num_ports * MBUFS_PER_PORT);
141 /* don't pass single-producer/single-consumer flags to mbuf create as it
142 * seems faster to use a cache instead */
143 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
144 PKTMBUF_POOL_NAME, num_mbufs);
145 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs,
146 MBUF_SIZE, MBUF_CACHE_SIZE,
147 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init,
148 NULL, rte_pktmbuf_init, NULL, rte_socket_id(), NO_FLAGS );
150 return (pktmbuf_pool == NULL); /* 0 on success */
154 * Initialise an individual port:
155 * - configure number of rx and tx rings
156 * - set up each rx ring, to pull from the main mbuf pool
157 * - set up each tx ring
158 * - start the port and report its status to stdout
161 init_port(uint8_t port_num)
163 /* for port configuration all features are off by default */
164 const struct rte_eth_conf port_conf = {
166 .mq_mode = ETH_MQ_RX_RSS
169 const uint16_t rx_rings = 1, tx_rings = num_clients;
170 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
171 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
176 printf("Port %u init ... ", (unsigned)port_num);
179 /* Standard DPDK port initialisation - config port, then set up
181 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
185 for (q = 0; q < rx_rings; q++) {
186 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
187 rte_eth_dev_socket_id(port_num), &rx_conf_default, pktmbuf_pool);
188 if (retval < 0) return retval;
191 for ( q = 0; q < tx_rings; q ++ ) {
192 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
193 rte_eth_dev_socket_id(port_num), &tx_conf_default);
194 if (retval < 0) return retval;
197 rte_eth_promiscuous_enable(port_num);
199 retval = rte_eth_dev_start(port_num);
200 if (retval < 0) return retval;
208 * Set up the DPDK rings which will be used to pass packets, via
209 * pointers, between the multi-process server and client processes.
210 * 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 socket_id = rte_socket_id();
228 q_name = get_rx_queue_name(i);
229 clients[i].rx_q = rte_ring_create(q_name,
231 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
232 if (clients[i].rx_q == NULL)
233 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
238 /* Check the link status of all ports in up to 9s, and print them finally */
240 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
242 #define CHECK_INTERVAL 100 /* 100ms */
243 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
244 uint8_t portid, count, all_ports_up, print_flag = 0;
245 struct rte_eth_link link;
247 printf("\nChecking link status");
249 for (count = 0; count <= MAX_CHECK_TIME; count++) {
251 for (portid = 0; portid < port_num; portid++) {
252 if ((port_mask & (1 << ports->id[portid])) == 0)
254 memset(&link, 0, sizeof(link));
255 rte_eth_link_get_nowait(ports->id[portid], &link);
256 /* print link status if flag set */
257 if (print_flag == 1) {
258 if (link.link_status)
259 printf("Port %d Link Up - speed %u "
260 "Mbps - %s\n", ports->id[portid],
261 (unsigned)link.link_speed,
262 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
263 ("full-duplex") : ("half-duplex\n"));
265 printf("Port %d Link Down\n",
266 (uint8_t)ports->id[portid]);
269 /* clear all_ports_up flag if any link down */
270 if (link.link_status == 0) {
275 /* after finally printing all link status, get out */
279 if (all_ports_up == 0) {
282 rte_delay_ms(CHECK_INTERVAL);
285 /* set the print_flag if all ports up or timeout */
286 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
294 * Main init function for the multi-process server app,
295 * calls subfunctions to do each stage of the initialisation.
298 init(int argc, char *argv[])
301 const struct rte_memzone *mz;
302 uint8_t i, total_ports;
304 /* init EAL, parsing EAL args */
305 retval = rte_eal_init(argc, argv);
311 /* initialise the nic drivers */
312 retval = init_drivers();
314 rte_exit(EXIT_FAILURE, "Cannot initialise drivers\n");
316 /* get total number of ports */
317 total_ports = rte_eth_dev_count();
319 /* set up array for port data */
320 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
321 rte_socket_id(), NO_FLAGS);
323 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
324 memset(mz->addr, 0, sizeof(*ports));
327 /* parse additional, application arguments */
328 retval = parse_app_args(total_ports, argc, argv);
332 /* initialise mbuf pools */
333 retval = init_mbuf_pools();
335 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
337 /* now initialise the ports we will use */
338 for (i = 0; i < ports->num_ports; i++) {
339 retval = init_port(ports->id[i]);
341 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
345 check_all_ports_link_status(ports->num_ports, (~0x0));
347 /* initialise the client queues/rings for inter-eu comms */