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1 | /* SPDX-License-Identifier: BSD-3-Clause |
2 | * Copyright(c) 2010-2014 Intel Corporation | |
7c673cae FG |
3 | */ |
4 | ||
5 | /* | |
6 | * This sample application is a simple multi-process application which | |
7 | * demostrates 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 <inttypes.h> | |
20 | #include <stdarg.h> | |
21 | #include <errno.h> | |
22 | #include <unistd.h> | |
23 | #include <termios.h> | |
24 | #include <sys/queue.h> | |
25 | ||
26 | #include <rte_common.h> | |
27 | #include <rte_memory.h> | |
7c673cae FG |
28 | #include <rte_launch.h> |
29 | #include <rte_eal.h> | |
30 | #include <rte_per_lcore.h> | |
31 | #include <rte_lcore.h> | |
32 | #include <rte_debug.h> | |
33 | #include <rte_atomic.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> | |
9f95a23c | 40 | #include <cmdline_parse_string.h> |
7c673cae FG |
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"; | |
7c673cae FG |
50 | |
51 | struct rte_ring *send_ring, *recv_ring; | |
52 | struct rte_mempool *message_pool; | |
53 | volatile int quit = 0; | |
54 | ||
55 | static int | |
56 | lcore_recv(__attribute__((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 | |
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 | if (rte_eal_process_type() == RTE_PROC_PRIMARY){ | |
91 | send_ring = rte_ring_create(_PRI_2_SEC, ring_size, rte_socket_id(), flags); | |
92 | recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags); | |
93 | message_pool = rte_mempool_create(_MSG_POOL, pool_size, | |
9f95a23c | 94 | STR_TOKEN_SIZE, pool_cache, priv_data_sz, |
7c673cae FG |
95 | NULL, NULL, NULL, NULL, |
96 | rte_socket_id(), flags); | |
97 | } else { | |
98 | recv_ring = rte_ring_lookup(_PRI_2_SEC); | |
99 | send_ring = rte_ring_lookup(_SEC_2_PRI); | |
100 | message_pool = rte_mempool_lookup(_MSG_POOL); | |
101 | } | |
102 | if (send_ring == NULL) | |
103 | rte_exit(EXIT_FAILURE, "Problem getting sending ring\n"); | |
104 | if (recv_ring == NULL) | |
105 | rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n"); | |
106 | if (message_pool == NULL) | |
107 | rte_exit(EXIT_FAILURE, "Problem getting message pool\n"); | |
108 | ||
109 | RTE_LOG(INFO, APP, "Finished Process Init.\n"); | |
110 | ||
111 | /* call lcore_recv() on every slave lcore */ | |
112 | RTE_LCORE_FOREACH_SLAVE(lcore_id) { | |
113 | rte_eal_remote_launch(lcore_recv, NULL, lcore_id); | |
114 | } | |
115 | ||
116 | /* call cmd prompt on master lcore */ | |
117 | struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > "); | |
118 | if (cl == NULL) | |
119 | rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n"); | |
120 | cmdline_interact(cl); | |
121 | cmdline_stdin_exit(cl); | |
122 | ||
123 | rte_eal_mp_wait_lcore(); | |
124 | return 0; | |
125 | } |