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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>
70 #include "init_drivers.h"
75 #define MBUFS_PER_CLIENT 1536
76 #define MBUFS_PER_PORT 1536
77 #define MBUF_CACHE_SIZE 512
78 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
79 #define RX_MBUF_DATA_SIZE 2048
80 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD)
82 #define RTE_MP_RX_DESC_DEFAULT 512
83 #define RTE_MP_TX_DESC_DEFAULT 512
84 #define CLIENT_QUEUE_RINGSIZE 128
89 * RX and TX Prefetch, Host, and Write-back threshold values should be
90 * carefully set for optimal performance. Consult the network
91 * controller's datasheet and supporting DPDK documentation for guidance
92 * on how these parameters should be set.
94 /* Default configuration for rx and tx thresholds etc. */
96 * These default values are optimized for use with the Intel(R) 82599 10 GbE
97 * Controller and the DPDK ixgbe PMD. Consider using other values for other
98 * network controllers and/or network drivers.
100 #define MP_DEFAULT_PTHRESH 36
101 #define MP_DEFAULT_RX_HTHRESH 8
102 #define MP_DEFAULT_TX_HTHRESH 0
103 #define MP_DEFAULT_WTHRESH 0
105 static const struct rte_eth_rxconf rx_conf_default = {
107 .pthresh = MP_DEFAULT_PTHRESH,
108 .hthresh = MP_DEFAULT_RX_HTHRESH,
109 .wthresh = MP_DEFAULT_WTHRESH,
113 static const struct rte_eth_txconf tx_conf_default = {
115 .pthresh = MP_DEFAULT_PTHRESH,
116 .hthresh = MP_DEFAULT_TX_HTHRESH,
117 .wthresh = MP_DEFAULT_WTHRESH,
119 .tx_free_thresh = 0, /* Use PMD default values */
120 .tx_rs_thresh = 0, /* Use PMD default values */
123 /* The mbuf pool for packet rx */
124 struct rte_mempool *pktmbuf_pool;
126 /* array of info/queues for clients */
127 struct client *clients = NULL;
129 /* the port details */
130 struct port_info *ports;
133 * Initialise the mbuf pool for packet reception for the NIC, and any other
134 * buffer pools needed by the app - currently none.
137 init_mbuf_pools(void)
139 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \
140 + (ports->num_ports * MBUFS_PER_PORT);
142 /* don't pass single-producer/single-consumer flags to mbuf create as it
143 * seems faster to use a cache instead */
144 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
145 PKTMBUF_POOL_NAME, num_mbufs);
146 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs,
147 MBUF_SIZE, MBUF_CACHE_SIZE,
148 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init,
149 NULL, rte_pktmbuf_init, NULL, SOCKET0, NO_FLAGS );
151 return (pktmbuf_pool == NULL); /* 0 on success */
155 * Initialise an individual port:
156 * - configure number of rx and tx rings
157 * - set up each rx ring, to pull from the main mbuf pool
158 * - set up each tx ring
159 * - start the port and report its status to stdout
162 init_port(uint8_t port_num)
164 /* for port configuration all features are off by default */
165 const struct rte_eth_conf port_conf = {
170 const uint16_t rx_rings = 1, tx_rings = num_clients;
171 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
172 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
174 struct rte_eth_link link;
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;
206 /* get link status */
207 rte_eth_link_get(port_num, &link);
208 if (link.link_status) {
209 printf(" Link Up - speed %u Mbps - %s\n",
210 (uint32_t) link.link_speed,
211 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
212 ("full-duplex") : ("half-duplex\n"));
215 printf(" Link Down\n");
221 * Set up the DPDK rings which will be used to pass packets, via
222 * pointers, between the multi-process server and client processes.
223 * Each client needs one RX queue.
229 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
231 clients = rte_malloc("client details",
232 sizeof(*clients) * num_clients, 0);
234 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
236 for (i = 0; i < num_clients; i++) {
237 /* Create an RX queue for each client */
238 clients[i].rx_q = rte_ring_create(get_rx_queue_name(i),
240 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
241 if (clients[i].rx_q == NULL)
242 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
248 * Main init function for the multi-process server app,
249 * calls subfunctions to do each stage of the initialisation.
252 init(int argc, char *argv[])
255 const struct rte_memzone *mz;
256 uint8_t i, total_ports;
258 /* init EAL, parsing EAL args */
259 retval = rte_eal_init(argc, argv);
265 /* initialise the nic drivers */
266 retval = init_drivers();
268 rte_exit(EXIT_FAILURE, "Cannot initialise drivers\n");
270 /* get total number of ports */
271 total_ports = rte_eth_dev_count();
273 /* set up array for port data */
274 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
275 rte_socket_id(), NO_FLAGS);
277 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
278 memset(mz->addr, 0, sizeof(*ports));
281 /* parse additional, application arguments */
282 retval = parse_app_args(total_ports, argc, argv);
286 /* initialise mbuf pools */
287 retval = init_mbuf_pools();
289 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
291 /* now initialise the ports we will use */
292 for (i = 0; i < ports->num_ports; i++) {
293 retval = init_port(ports->id[i]);
295 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
299 /* initialise the client queues/rings for inter-eu comms */