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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 | } |