ceph/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4 #include <stdint.h>
   5 #include <string.h>
   6 #include <stdlib.h>
   7 #include <stdarg.h>
   8 #include <inttypes.h>
   9 #include <stdio.h>
  10 #include <termios.h>
  11 #include <errno.h>
  12 #include <sys/queue.h>
  13
  14 #include <rte_common.h>
  15 #include <rte_memory.h>
  16 #include <rte_eal.h>
  17 #include <rte_atomic.h>
  18 #include <rte_branch_prediction.h>
  19 #include <rte_launch.h>
  20 #include <rte_log.h>
  21 #include <rte_per_lcore.h>
  22 #include <rte_lcore.h>
  23 #include <rte_ring.h>
  24 #include <rte_debug.h>
  25 #include <rte_mempool.h>
  26 #include <rte_string_fns.h>
  27
  28 #include <cmdline_rdline.h>
  29 #include <cmdline_parse.h>
  30 #include <cmdline_parse_string.h>
  31 #include <cmdline_socket.h>
  32 #include <cmdline.h>
  33 #include "mp_commands.h"
  34
  35 /**********************************************************/
  36
  37 struct cmd_send_result {
  38         cmdline_fixed_string_t action;
  39         cmdline_fixed_string_t message;
  40 };
  41
  42 static void cmd_send_parsed(void *parsed_result,
  43                 __attribute__((unused)) struct cmdline *cl,
  44                 __attribute__((unused)) void *data)
  45 {
  46         void *msg = NULL;
  47         struct cmd_send_result *res = parsed_result;
  48
  49         if (rte_mempool_get(message_pool, &msg) < 0)
  50                 rte_panic("Failed to get message buffer\n");
  51         strlcpy((char *)msg, res->message, STR_TOKEN_SIZE);
  52         if (rte_ring_enqueue(send_ring, msg) < 0) {
  53                 printf("Failed to send message - message discarded\n");
  54                 rte_mempool_put(message_pool, msg);
  55         }
  56 }
  57
  58 cmdline_parse_token_string_t cmd_send_action =
  59         TOKEN_STRING_INITIALIZER(struct cmd_send_result, action, "send");
  60 cmdline_parse_token_string_t cmd_send_message =
  61         TOKEN_STRING_INITIALIZER(struct cmd_send_result, message, NULL);
  62
  63 cmdline_parse_inst_t cmd_send = {
  64         .f = cmd_send_parsed,  /* function to call */
  65         .data = NULL,      /* 2nd arg of func */
  66         .help_str = "send a string to another process",
  67         .tokens = {        /* token list, NULL terminated */
  68                         (void *)&cmd_send_action,
  69                         (void *)&cmd_send_message,
  70                         NULL,
  71         },
  72 };
  73
  74 /**********************************************************/
  75
  76 struct cmd_quit_result {
  77         cmdline_fixed_string_t quit;
  78 };
  79
  80 static void cmd_quit_parsed(__attribute__((unused)) void *parsed_result,
  81                             struct cmdline *cl,
  82                             __attribute__((unused)) void *data)
  83 {
  84         quit = 1;
  85         cmdline_quit(cl);
  86 }
  87
  88 cmdline_parse_token_string_t cmd_quit_quit =
  89         TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
  90
  91 cmdline_parse_inst_t cmd_quit = {
  92         .f = cmd_quit_parsed,  /* function to call */
  93         .data = NULL,      /* 2nd arg of func */
  94         .help_str = "close the application",
  95         .tokens = {        /* token list, NULL terminated */
  96                 (void *)&cmd_quit_quit,
  97                 NULL,
  98         },
  99 };
 100
 101 /**********************************************************/
 102
 103 struct cmd_help_result {
 104         cmdline_fixed_string_t help;
 105 };
 106
 107 static void cmd_help_parsed(__attribute__((unused)) void *parsed_result,
 108                             struct cmdline *cl,
 109                             __attribute__((unused)) void *data)
 110 {
 111         cmdline_printf(cl, "Simple demo example of multi-process in RTE\n\n"
 112                         "This is a readline-like interface that can be used to\n"
 113                         "send commands to the simple app. Commands supported are:\n\n"
 114                         "- send [string]\n" "- help\n" "- quit\n\n");
 115 }
 116
 117 cmdline_parse_token_string_t cmd_help_help =
 118         TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
 119
 120 cmdline_parse_inst_t cmd_help = {
 121         .f = cmd_help_parsed,  /* function to call */
 122         .data = NULL,      /* 2nd arg of func */
 123         .help_str = "show help",
 124         .tokens = {        /* token list, NULL terminated */
 125                 (void *)&cmd_help_help,
 126                 NULL,
 127         },
 128 };
 129
 130 /****** CONTEXT (list of instruction) */
 131 cmdline_parse_ctx_t simple_mp_ctx[] = {
 132                 (cmdline_parse_inst_t *)&cmd_send,
 133                 (cmdline_parse_inst_t *)&cmd_quit,
 134                 (cmdline_parse_inst_t *)&cmd_help,
 135         NULL,
 136 };