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8 * modification, are permitted provided that the following conditions
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22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * version: DPDK.L.1.2.3-3
39 #include <sys/queue.h>
44 #include <rte_common.h>
45 #include <rte_memory.h>
46 #include <rte_memzone.h>
47 #include <rte_tailq.h>
49 #include <rte_byteorder.h>
50 #include <rte_atomic.h>
51 #include <rte_launch.h>
52 #include <rte_per_lcore.h>
53 #include <rte_lcore.h>
54 #include <rte_branch_prediction.h>
55 #include <rte_debug.h>
58 #include <rte_mempool.h>
59 #include <rte_memcpy.h>
61 #include <rte_interrupts.h>
63 #include <rte_ether.h>
64 #include <rte_ethdev.h>
65 #include <rte_malloc.h>
66 #include <rte_hash_crc.h>
67 #include <rte_fbk_hash.h>
68 #include <rte_string_fns.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;
175 struct rte_eth_link link;
179 printf("Port %u init ... ", (unsigned)port_num);
182 /* Standard DPDK port initialisation - config port, then set up
184 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
188 for (q = 0; q < rx_rings; q++) {
189 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
190 SOCKET0, &rx_conf_default, pktmbuf_pool);
191 if (retval < 0) return retval;
194 for ( q = 0; q < tx_rings; q ++ ) {
195 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
196 SOCKET0, &tx_conf_default);
197 if (retval < 0) return retval;
200 rte_eth_promiscuous_enable(port_num);
202 retval = rte_eth_dev_start(port_num);
203 if (retval < 0) return retval;
207 /* get link status */
208 rte_eth_link_get(port_num, &link);
209 if (link.link_status) {
210 printf(" Link Up - speed %u Mbps - %s\n",
211 (uint32_t) link.link_speed,
212 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
213 ("full-duplex") : ("half-duplex\n"));
216 printf(" Link Down\n");
222 * Set up the DPDK rings which will be used to pass packets, via
223 * pointers, between the multi-process server and client processes.
224 * Each client needs one RX queue.
230 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
232 clients = rte_malloc("client details",
233 sizeof(*clients) * num_clients, 0);
235 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
237 for (i = 0; i < num_clients; i++) {
238 /* Create an RX queue for each client */
239 clients[i].rx_q = rte_ring_create(get_rx_queue_name(i),
241 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
242 if (clients[i].rx_q == NULL)
243 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
249 * Main init function for the multi-process server app,
250 * calls subfunctions to do each stage of the initialisation.
253 init(int argc, char *argv[])
256 const struct rte_memzone *mz;
257 uint8_t i, total_ports;
259 /* init EAL, parsing EAL args */
260 retval = rte_eal_init(argc, argv);
266 /* initialise the nic drivers */
267 retval = init_drivers();
269 rte_exit(EXIT_FAILURE, "Cannot initialise drivers\n");
271 /* get total number of ports */
272 total_ports = rte_eth_dev_count();
274 /* set up array for port data */
275 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
276 rte_socket_id(), NO_FLAGS);
278 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
279 memset(mz->addr, 0, sizeof(*ports));
282 /* parse additional, application arguments */
283 retval = parse_app_args(total_ports, argc, argv);
287 /* initialise mbuf pools */
288 retval = init_mbuf_pools();
290 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
292 /* now initialise the ports we will use */
293 for (i = 0; i < ports->num_ports; i++) {
294 retval = init_port(ports->id[i]);
296 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
300 /* initialise the client queues/rings for inter-eu comms */