4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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>
59 #include <rte_ether.h>
60 #include <rte_ethdev.h>
61 #include <rte_malloc.h>
62 #include <rte_string_fns.h>
63 #include <rte_cycles.h>
69 #define MBUFS_PER_CLIENT 1536
70 #define MBUFS_PER_PORT 1536
71 #define MBUF_CACHE_SIZE 512
73 #define RTE_MP_RX_DESC_DEFAULT 512
74 #define RTE_MP_TX_DESC_DEFAULT 512
75 #define CLIENT_QUEUE_RINGSIZE 128
79 /* The mbuf pool for packet rx */
80 struct rte_mempool *pktmbuf_pool;
82 /* array of info/queues for clients */
83 struct client *clients = NULL;
85 /* the port details */
86 struct port_info *ports;
89 * Initialise the mbuf pool for packet reception for the NIC, and any other
90 * buffer pools needed by the app - currently none.
95 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \
96 + (ports->num_ports * MBUFS_PER_PORT);
98 /* don't pass single-producer/single-consumer flags to mbuf create as it
99 * seems faster to use a cache instead */
100 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
101 PKTMBUF_POOL_NAME, num_mbufs);
102 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
103 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
105 return pktmbuf_pool == NULL; /* 0 on success */
109 * Initialise an individual port:
110 * - configure number of rx and tx rings
111 * - set up each rx ring, to pull from the main mbuf pool
112 * - set up each tx ring
113 * - start the port and report its status to stdout
116 init_port(uint16_t port_num)
118 /* for port configuration all features are off by default */
119 const struct rte_eth_conf port_conf = {
121 .mq_mode = ETH_MQ_RX_RSS
124 const uint16_t rx_rings = 1, tx_rings = num_clients;
125 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
126 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
131 printf("Port %u init ... ", port_num);
134 /* Standard DPDK port initialisation - config port, then set up
136 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
140 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size,
145 for (q = 0; q < rx_rings; q++) {
146 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
147 rte_eth_dev_socket_id(port_num),
149 if (retval < 0) return retval;
152 for ( q = 0; q < tx_rings; q ++ ) {
153 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
154 rte_eth_dev_socket_id(port_num),
156 if (retval < 0) return retval;
159 rte_eth_promiscuous_enable(port_num);
161 retval = rte_eth_dev_start(port_num);
162 if (retval < 0) return retval;
170 * Set up the DPDK rings which will be used to pass packets, via
171 * pointers, between the multi-process server and client processes.
172 * Each client needs one RX queue.
180 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
182 clients = rte_malloc("client details",
183 sizeof(*clients) * num_clients, 0);
185 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
187 for (i = 0; i < num_clients; i++) {
188 /* Create an RX queue for each client */
189 socket_id = rte_socket_id();
190 q_name = get_rx_queue_name(i);
191 clients[i].rx_q = rte_ring_create(q_name,
193 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
194 if (clients[i].rx_q == NULL)
195 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
200 /* Check the link status of all ports in up to 9s, and print them finally */
202 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
204 #define CHECK_INTERVAL 100 /* 100ms */
205 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
207 uint8_t count, all_ports_up, print_flag = 0;
208 struct rte_eth_link link;
210 printf("\nChecking link status");
212 for (count = 0; count <= MAX_CHECK_TIME; count++) {
214 for (portid = 0; portid < port_num; portid++) {
215 if ((port_mask & (1 << ports->id[portid])) == 0)
217 memset(&link, 0, sizeof(link));
218 rte_eth_link_get_nowait(ports->id[portid], &link);
219 /* print link status if flag set */
220 if (print_flag == 1) {
221 if (link.link_status)
222 printf("Port %d Link Up - speed %u "
223 "Mbps - %s\n", ports->id[portid],
224 (unsigned)link.link_speed,
225 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
226 ("full-duplex") : ("half-duplex\n"));
228 printf("Port %d Link Down\n",
229 (uint8_t)ports->id[portid]);
232 /* clear all_ports_up flag if any link down */
233 if (link.link_status == ETH_LINK_DOWN) {
238 /* after finally printing all link status, get out */
242 if (all_ports_up == 0) {
245 rte_delay_ms(CHECK_INTERVAL);
248 /* set the print_flag if all ports up or timeout */
249 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
257 * Main init function for the multi-process server app,
258 * calls subfunctions to do each stage of the initialisation.
261 init(int argc, char *argv[])
264 const struct rte_memzone *mz;
265 uint16_t i, total_ports;
267 /* init EAL, parsing EAL args */
268 retval = rte_eal_init(argc, argv);
274 /* get total number of ports */
275 total_ports = rte_eth_dev_count();
277 /* set up array for port data */
278 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
279 rte_socket_id(), NO_FLAGS);
281 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
282 memset(mz->addr, 0, sizeof(*ports));
285 /* parse additional, application arguments */
286 retval = parse_app_args(total_ports, argc, argv);
290 /* initialise mbuf pools */
291 retval = init_mbuf_pools();
293 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
295 /* now initialise the ports we will use */
296 for (i = 0; i < ports->num_ports; i++) {
297 retval = init_port(ports->id[i]);
299 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
303 check_all_ports_link_status(ports->num_ports, (~0x0));
305 /* initialise the client queues/rings for inter-eu comms */