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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>
70 #define MBUFS_PER_CLIENT 1536
71 #define MBUFS_PER_PORT 1536
72 #define MBUF_CACHE_SIZE 512
74 #define RTE_MP_RX_DESC_DEFAULT 512
75 #define RTE_MP_TX_DESC_DEFAULT 512
76 #define CLIENT_QUEUE_RINGSIZE 128
80 /* The mbuf pool for packet rx */
81 struct rte_mempool *pktmbuf_pool;
83 /* array of info/queues for clients */
84 struct client *clients = NULL;
86 /* the port details */
87 struct port_info *ports;
90 * Initialise the mbuf pool for packet reception for the NIC, and any other
91 * buffer pools needed by the app - currently none.
96 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \
97 + (ports->num_ports * MBUFS_PER_PORT);
99 /* don't pass single-producer/single-consumer flags to mbuf create as it
100 * seems faster to use a cache instead */
101 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
102 PKTMBUF_POOL_NAME, num_mbufs);
103 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
104 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
106 return pktmbuf_pool == NULL; /* 0 on success */
110 * Initialise an individual port:
111 * - configure number of rx and tx rings
112 * - set up each rx ring, to pull from the main mbuf pool
113 * - set up each tx ring
114 * - start the port and report its status to stdout
117 init_port(uint8_t port_num)
119 /* for port configuration all features are off by default */
120 const struct rte_eth_conf port_conf = {
122 .mq_mode = ETH_MQ_RX_RSS
125 const uint16_t rx_rings = 1, tx_rings = num_clients;
126 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
127 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
132 printf("Port %u init ... ", (unsigned)port_num);
135 /* Standard DPDK port initialisation - config port, then set up
137 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
141 for (q = 0; q < rx_rings; q++) {
142 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
143 rte_eth_dev_socket_id(port_num),
145 if (retval < 0) return retval;
148 for ( q = 0; q < tx_rings; q ++ ) {
149 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
150 rte_eth_dev_socket_id(port_num),
152 if (retval < 0) return retval;
155 rte_eth_promiscuous_enable(port_num);
157 retval = rte_eth_dev_start(port_num);
158 if (retval < 0) return retval;
166 * Set up the DPDK rings which will be used to pass packets, via
167 * pointers, between the multi-process server and client processes.
168 * Each client needs one RX queue.
176 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
178 clients = rte_malloc("client details",
179 sizeof(*clients) * num_clients, 0);
181 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
183 for (i = 0; i < num_clients; i++) {
184 /* Create an RX queue for each client */
185 socket_id = rte_socket_id();
186 q_name = get_rx_queue_name(i);
187 clients[i].rx_q = rte_ring_create(q_name,
189 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
190 if (clients[i].rx_q == NULL)
191 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
196 /* Check the link status of all ports in up to 9s, and print them finally */
198 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
200 #define CHECK_INTERVAL 100 /* 100ms */
201 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
202 uint8_t portid, count, all_ports_up, print_flag = 0;
203 struct rte_eth_link link;
205 printf("\nChecking link status");
207 for (count = 0; count <= MAX_CHECK_TIME; count++) {
209 for (portid = 0; portid < port_num; portid++) {
210 if ((port_mask & (1 << ports->id[portid])) == 0)
212 memset(&link, 0, sizeof(link));
213 rte_eth_link_get_nowait(ports->id[portid], &link);
214 /* print link status if flag set */
215 if (print_flag == 1) {
216 if (link.link_status)
217 printf("Port %d Link Up - speed %u "
218 "Mbps - %s\n", ports->id[portid],
219 (unsigned)link.link_speed,
220 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
221 ("full-duplex") : ("half-duplex\n"));
223 printf("Port %d Link Down\n",
224 (uint8_t)ports->id[portid]);
227 /* clear all_ports_up flag if any link down */
228 if (link.link_status == ETH_LINK_DOWN) {
233 /* after finally printing all link status, get out */
237 if (all_ports_up == 0) {
240 rte_delay_ms(CHECK_INTERVAL);
243 /* set the print_flag if all ports up or timeout */
244 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
252 * Main init function for the multi-process server app,
253 * calls subfunctions to do each stage of the initialisation.
256 init(int argc, char *argv[])
259 const struct rte_memzone *mz;
260 uint8_t i, total_ports;
262 /* init EAL, parsing EAL args */
263 retval = rte_eal_init(argc, argv);
269 /* get total number of ports */
270 total_ports = rte_eth_dev_count();
272 /* set up array for port data */
273 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
274 rte_socket_id(), NO_FLAGS);
276 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
277 memset(mz->addr, 0, sizeof(*ports));
280 /* parse additional, application arguments */
281 retval = parse_app_args(total_ports, argc, argv);
285 /* initialise mbuf pools */
286 retval = init_mbuf_pools();
288 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
290 /* now initialise the ports we will use */
291 for (i = 0; i < ports->num_ports; i++) {
292 retval = init_port(ports->id[i]);
294 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
298 check_all_ports_link_status(ports->num_ports, (~0x0));
300 /* initialise the client queues/rings for inter-eu comms */