1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 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 16 * distribution. 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. 20 * 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. 32 */ 33 34 /* 35 * This sample application is a simple multi-process application which 36 * demostrates sharing of queues and memory pools between processes, and 37 * using those queues/pools for communication between the processes. 38 * 39 * Application is designed to run with two processes, a primary and a 40 * secondary, and each accepts commands on the commandline, the most 41 * important of which is "send", which just sends a string to the other 42 * process. 43 */ 44 45 #include <stdio.h> 46 #include <string.h> 47 #include <stdint.h> 48 #include <inttypes.h> 49 #include <stdarg.h> 50 #include <errno.h> 51 #include <unistd.h> 52 #include <termios.h> 53 #include <sys/queue.h> 54 55 #include <rte_common.h> 56 #include <rte_memory.h> 57 #include <rte_memzone.h> 58 #include <rte_launch.h> 59 #include <rte_eal.h> 60 #include <rte_per_lcore.h> 61 #include <rte_lcore.h> 62 #include <rte_debug.h> 63 #include <rte_atomic.h> 64 #include <rte_branch_prediction.h> 65 #include <rte_ring.h> 66 #include <rte_log.h> 67 #include <rte_mempool.h> 68 #include <cmdline_rdline.h> 69 #include <cmdline_parse.h> 70 #include <cmdline_socket.h> 71 #include <cmdline.h> 72 #include "mp_commands.h" 73 74 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1 75 76 static const char *_MSG_POOL = "MSG_POOL"; 77 static const char *_SEC_2_PRI = "SEC_2_PRI"; 78 static const char *_PRI_2_SEC = "PRI_2_SEC"; 79 const unsigned string_size = 64; 80 81 struct rte_ring *send_ring, *recv_ring; 82 struct rte_mempool *message_pool; 83 volatile int quit = 0; 84 85 static int 86 lcore_recv(__attribute__((unused)) void *arg) 87 { 88 unsigned lcore_id = rte_lcore_id(); 89 90 printf("Starting core %u\n", lcore_id); 91 while (!quit){ 92 void *msg; 93 if (rte_ring_dequeue(recv_ring, &msg) < 0){ 94 usleep(5); 95 continue; 96 } 97 printf("core %u: Received '%s'\n", lcore_id, (char *)msg); 98 rte_mempool_put(message_pool, msg); 99 } 100 101 return 0; 102 } 103 104 int 105 main(int argc, char **argv) 106 { 107 const unsigned flags = 0; 108 const unsigned ring_size = 64; 109 const unsigned pool_size = 1024; 110 const unsigned pool_cache = 32; 111 const unsigned priv_data_sz = 0; 112 113 int ret; 114 unsigned lcore_id; 115 116 ret = rte_eal_init(argc, argv); 117 if (ret < 0) 118 rte_exit(EXIT_FAILURE, "Cannot init EAL\n"); 119 120 if (rte_eal_process_type() == RTE_PROC_PRIMARY){ 121 send_ring = rte_ring_create(_PRI_2_SEC, ring_size, rte_socket_id(), flags); 122 recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags); 123 message_pool = rte_mempool_create(_MSG_POOL, pool_size, 124 string_size, pool_cache, priv_data_sz, 125 NULL, NULL, NULL, NULL, 126 rte_socket_id(), flags); 127 } else { 128 recv_ring = rte_ring_lookup(_PRI_2_SEC); 129 send_ring = rte_ring_lookup(_SEC_2_PRI); 130 message_pool = rte_mempool_lookup(_MSG_POOL); 131 } 132 if (send_ring == NULL) 133 rte_exit(EXIT_FAILURE, "Problem getting sending ring\n"); 134 if (recv_ring == NULL) 135 rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n"); 136 if (message_pool == NULL) 137 rte_exit(EXIT_FAILURE, "Problem getting message pool\n"); 138 139 RTE_LOG(INFO, APP, "Finished Process Init.\n"); 140 141 /* call lcore_recv() on every slave lcore */ 142 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 143 rte_eal_remote_launch(lcore_recv, NULL, lcore_id); 144 } 145 146 /* call cmd prompt on master lcore */ 147 struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > "); 148 if (cl == NULL) 149 rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n"); 150 cmdline_interact(cl); 151 cmdline_stdin_exit(cl); 152 153 rte_eal_mp_wait_lcore(); 154 return 0; 155 } 156