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 #include <stdio.h> 35 #include <stdint.h> 36 #include <sys/queue.h> 37 38 #include <rte_common.h> 39 #include <rte_memory.h> 40 #include <rte_memzone.h> 41 #include <rte_per_lcore.h> 42 #include <rte_launch.h> 43 #include <rte_eal.h> 44 #include <rte_per_lcore.h> 45 #include <rte_lcore.h> 46 #include <rte_cycles.h> 47 48 #include "test.h" 49 50 /* 51 * Per-lcore variables and lcore launch 52 * ==================================== 53 * 54 * - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on 55 * every available lcore. In this function, a per-lcore variable is 56 * assigned to the lcore_id. 57 * 58 * - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on 59 * every available lcore. The function checks that the variable is 60 * correctly set, or returns -1. 61 * 62 * - If at least one per-core variable was not correct, the test function 63 * returns -1. 64 */ 65 66 static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678; 67 68 static int 69 assign_vars(__attribute__((unused)) void *arg) 70 { 71 if (RTE_PER_LCORE(test) != 0x12345678) 72 return -1; 73 RTE_PER_LCORE(test) = rte_lcore_id(); 74 return 0; 75 } 76 77 static int 78 display_vars(__attribute__((unused)) void *arg) 79 { 80 unsigned lcore_id = rte_lcore_id(); 81 unsigned var = RTE_PER_LCORE(test); 82 unsigned socket_id = rte_lcore_to_socket_id(lcore_id); 83 84 printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var); 85 if (lcore_id != var) 86 return -1; 87 88 RTE_PER_LCORE(test) = 0x12345678; 89 return 0; 90 } 91 92 static int 93 test_per_lcore_delay(__attribute__((unused)) void *arg) 94 { 95 rte_delay_ms(100); 96 printf("wait 100ms on lcore %u\n", rte_lcore_id()); 97 98 return 0; 99 } 100 101 static int 102 test_per_lcore(void) 103 { 104 unsigned lcore_id; 105 int ret; 106 107 rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MASTER); 108 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 109 if (rte_eal_wait_lcore(lcore_id) < 0) 110 return -1; 111 } 112 113 rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MASTER); 114 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 115 if (rte_eal_wait_lcore(lcore_id) < 0) 116 return -1; 117 } 118 119 /* test if it could do remote launch twice at the same time or not */ 120 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER); 121 if (ret < 0) { 122 printf("It fails to do remote launch but it should able to do\n"); 123 return -1; 124 } 125 /* it should not be able to launch a lcore which is running */ 126 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER); 127 if (ret == 0) { 128 printf("It does remote launch successfully but it should not at this time\n"); 129 return -1; 130 } 131 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 132 if (rte_eal_wait_lcore(lcore_id) < 0) 133 return -1; 134 } 135 136 return 0; 137 } 138 139 REGISTER_TEST_COMMAND(per_lcore_autotest, test_per_lcore); 140