4 * Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer in
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18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
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22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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36 * This sample application is a simple multi-process application which
37 * demostrates sharing of queues and memory pools between processes, and
38 * using those queues/pools for communication between the processes.
40 * Application is designed to run with two processes, a primary and a
41 * secondary, and each accepts commands on the commandline, the most
42 * important of which is "send", which just sends a string to the other
54 #include <sys/queue.h>
56 #include <rte_common.h>
57 #include <rte_memory.h>
58 #include <rte_memzone.h>
59 #include <rte_launch.h>
60 #include <rte_tailq.h>
62 #include <rte_per_lcore.h>
63 #include <rte_lcore.h>
64 #include <rte_debug.h>
65 #include <rte_atomic.h>
66 #include <rte_branch_prediction.h>
69 #include <rte_mempool.h>
70 #include <cmdline_rdline.h>
71 #include <cmdline_parse.h>
72 #include <cmdline_socket.h>
74 #include "mp_commands.h"
76 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
80 static const char *_MSG_POOL = "MSG_POOL";
81 static const char *_SEC_2_PRI = "SEC_2_PRI";
82 static const char *_PRI_2_SEC = "PRI_2_SEC";
83 const unsigned string_size = 64;
85 struct rte_ring *send_ring, *recv_ring;
86 struct rte_mempool *message_pool;
87 volatile int quit = 0;
90 lcore_recv(__attribute__((unused)) void *arg)
92 unsigned lcore_id = rte_lcore_id();
94 printf("Starting core %u\n", lcore_id);
97 if (rte_ring_dequeue(recv_ring, &msg) < 0){
101 printf("core %u: Received '%s'\n", lcore_id, (char *)msg);
102 rte_mempool_put(message_pool, msg);
109 main(int argc, char **argv)
111 const unsigned flags = 0;
112 const unsigned ring_size = 64;
113 const unsigned pool_size = 1024;
114 const unsigned pool_cache = 32;
115 const unsigned priv_data_sz = 0;
120 ret = rte_eal_init(argc, argv);
122 rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
124 if (rte_eal_process_type() == RTE_PROC_PRIMARY){
125 send_ring = rte_ring_create(_PRI_2_SEC, ring_size, SOCKET0, flags);
126 recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, SOCKET0, flags);
127 message_pool = rte_mempool_create(_MSG_POOL, pool_size,
128 string_size, pool_cache, priv_data_sz,
129 NULL, NULL, NULL, NULL,
132 recv_ring = rte_ring_lookup(_PRI_2_SEC);
133 send_ring = rte_ring_lookup(_SEC_2_PRI);
134 message_pool = rte_mempool_lookup(_MSG_POOL);
136 if (send_ring == NULL)
137 rte_exit(EXIT_FAILURE, "Problem getting sending ring\n");
138 if (recv_ring == NULL)
139 rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n");
140 if (message_pool == NULL)
141 rte_exit(EXIT_FAILURE, "Problem getting message pool\n");
143 RTE_LOG(INFO, APP, "Finished Process Init.\n");
145 /* call lcore_recv() on every slave lcore */
146 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
147 rte_eal_remote_launch(lcore_recv, NULL, lcore_id);
150 /* call cmd prompt on master lcore */
151 struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > ");
153 rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n");
154 cmdline_interact(cl);
155 cmdline_stdin_exit(cl);
157 rte_eal_mp_wait_lcore();