1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5 /*
6 * This sample application is a simple multi-process application which
7 * demonstrates sharing of queues and memory pools between processes, and
8 * using those queues/pools for communication between the processes.
9 *
10 * Application is designed to run with two processes, a primary and a
11 * secondary, and each accepts commands on the commandline, the most
12 * important of which is "send", which just sends a string to the other
13 * process.
14 */
15
16 #include <stdio.h>
17 #include <string.h>
18 #include <stdint.h>
19 #include <stdlib.h>
20 #include <inttypes.h>
21 #include <stdarg.h>
22 #include <errno.h>
23 #include <unistd.h>
24 #include <termios.h>
25 #include <sys/queue.h>
26
27 #include <rte_common.h>
28 #include <rte_memory.h>
29 #include <rte_launch.h>
30 #include <rte_eal.h>
31 #include <rte_per_lcore.h>
32 #include <rte_lcore.h>
33 #include <rte_debug.h>
34 #include <rte_branch_prediction.h>
35 #include <rte_ring.h>
36 #include <rte_log.h>
37 #include <rte_mempool.h>
38 #include <cmdline_rdline.h>
39 #include <cmdline_parse.h>
40 #include <cmdline_parse_string.h>
41 #include <cmdline_socket.h>
42 #include <cmdline.h>
43 #include "mp_commands.h"
44
45 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
46
47 static const char *_MSG_POOL = "MSG_POOL";
48 static const char *_SEC_2_PRI = "SEC_2_PRI";
49 static const char *_PRI_2_SEC = "PRI_2_SEC";
50
51 struct rte_ring *send_ring, *recv_ring;
52 struct rte_mempool *message_pool;
53 volatile int quit = 0;
54
55 static int
lcore_recv(__rte_unused void * arg)56 lcore_recv(__rte_unused void *arg)
57 {
58 unsigned lcore_id = rte_lcore_id();
59
60 printf("Starting core %u\n", lcore_id);
61 while (!quit){
62 void *msg;
63 if (rte_ring_dequeue(recv_ring, &msg) < 0){
64 usleep(5);
65 continue;
66 }
67 printf("core %u: Received '%s'\n", lcore_id, (char *)msg);
68 rte_mempool_put(message_pool, msg);
69 }
70
71 return 0;
72 }
73
74 int
main(int argc,char ** argv)75 main(int argc, char **argv)
76 {
77 const unsigned flags = 0;
78 const unsigned ring_size = 64;
79 const unsigned pool_size = 1024;
80 const unsigned pool_cache = 32;
81 const unsigned priv_data_sz = 0;
82
83 int ret;
84 unsigned lcore_id;
85
86 ret = rte_eal_init(argc, argv);
87 if (ret < 0)
88 rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
89
90 /* Start of ring structure. 8< */
91 if (rte_eal_process_type() == RTE_PROC_PRIMARY){
92 send_ring = rte_ring_create(_PRI_2_SEC, ring_size, rte_socket_id(), flags);
93 recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags);
94 message_pool = rte_mempool_create(_MSG_POOL, pool_size,
95 STR_TOKEN_SIZE, pool_cache, priv_data_sz,
96 NULL, NULL, NULL, NULL,
97 rte_socket_id(), flags);
98 } else {
99 recv_ring = rte_ring_lookup(_PRI_2_SEC);
100 send_ring = rte_ring_lookup(_SEC_2_PRI);
101 message_pool = rte_mempool_lookup(_MSG_POOL);
102 }
103 /* >8 End of ring structure. */
104 if (send_ring == NULL)
105 rte_exit(EXIT_FAILURE, "Problem getting sending ring\n");
106 if (recv_ring == NULL)
107 rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n");
108 if (message_pool == NULL)
109 rte_exit(EXIT_FAILURE, "Problem getting message pool\n");
110
111 RTE_LOG(INFO, APP, "Finished Process Init.\n");
112
113 /* call lcore_recv() on every worker lcore */
114 RTE_LCORE_FOREACH_WORKER(lcore_id) {
115 rte_eal_remote_launch(lcore_recv, NULL, lcore_id);
116 }
117
118 /* call cmd prompt on main lcore */
119 struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > ");
120 if (cl == NULL)
121 rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n");
122 cmdline_interact(cl);
123 cmdline_stdin_exit(cl);
124
125 rte_eal_mp_wait_lcore();
126
127 /* clean up the EAL */
128 rte_eal_cleanup();
129
130 return 0;
131 }
132