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

   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 #include <stdint.h>
  34 #include <string.h>
  35 #include <stdlib.h>
  36 #include <stdarg.h>
  37 #include <inttypes.h>
  38 #include <stdio.h>
  39 #include <termios.h>
  40 #include <errno.h>
  41 #include <sys/queue.h>
  42
  43 #include <rte_common.h>
  44 #include <rte_memory.h>
  45 #include <rte_memzone.h>
  46 #include <rte_eal.h>
  47 #include <rte_atomic.h>
  48 #include <rte_branch_prediction.h>
  49 #include <rte_launch.h>
  50 #include <rte_log.h>
  51 #include <rte_per_lcore.h>
  52 #include <rte_lcore.h>
  53 #include <rte_ring.h>
  54 #include <rte_debug.h>
  55 #include <rte_mempool.h>
  56 #include <rte_string_fns.h>
  57
  58 #include <cmdline_rdline.h>
  59 #include <cmdline_parse.h>
  60 #include <cmdline_parse_string.h>
  61 #include <cmdline_socket.h>
  62 #include <cmdline.h>
  63 #include "mp_commands.h"
  64
  65 /**********************************************************/
  66
  67 struct cmd_send_result {
  68         cmdline_fixed_string_t action;
  69         cmdline_fixed_string_t message;
  70 };
  71
  72 static void cmd_send_parsed(void *parsed_result,
  73                 __attribute__((unused)) struct cmdline *cl,
  74                 __attribute__((unused)) void *data)
  75 {
  76         void *msg = NULL;
  77         struct cmd_send_result *res = parsed_result;
  78
  79         if (rte_mempool_get(message_pool, &msg) < 0)
  80                 rte_panic("Failed to get message buffer\n");
  81         snprintf((char *)msg, string_size, "%s", res->message);
  82         if (rte_ring_enqueue(send_ring, msg) < 0) {
  83                 printf("Failed to send message - message discarded\n");
  84                 rte_mempool_put(message_pool, msg);
  85         }
  86 }
  87
  88 cmdline_parse_token_string_t cmd_send_action =
  89         TOKEN_STRING_INITIALIZER(struct cmd_send_result, action, "send");
  90 cmdline_parse_token_string_t cmd_send_message =
  91         TOKEN_STRING_INITIALIZER(struct cmd_send_result, message, NULL);
  92
  93 cmdline_parse_inst_t cmd_send = {
  94         .f = cmd_send_parsed,  /* function to call */
  95         .data = NULL,      /* 2nd arg of func */
  96         .help_str = "send a string to another process",
  97         .tokens = {        /* token list, NULL terminated */
  98                         (void *)&cmd_send_action,
  99                         (void *)&cmd_send_message,
 100                         NULL,
 101         },
 102 };
 103
 104 /**********************************************************/
 105
 106 struct cmd_quit_result {
 107         cmdline_fixed_string_t quit;
 108 };
 109
 110 static void cmd_quit_parsed(__attribute__((unused)) void *parsed_result,
 111                             struct cmdline *cl,
 112                             __attribute__((unused)) void *data)
 113 {
 114         quit = 1;
 115         cmdline_quit(cl);
 116 }
 117
 118 cmdline_parse_token_string_t cmd_quit_quit =
 119         TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
 120
 121 cmdline_parse_inst_t cmd_quit = {
 122         .f = cmd_quit_parsed,  /* function to call */
 123         .data = NULL,      /* 2nd arg of func */
 124         .help_str = "close the application",
 125         .tokens = {        /* token list, NULL terminated */
 126                 (void *)&cmd_quit_quit,
 127                 NULL,
 128         },
 129 };
 130
 131 /**********************************************************/
 132
 133 struct cmd_help_result {
 134         cmdline_fixed_string_t help;
 135 };
 136
 137 static void cmd_help_parsed(__attribute__((unused)) void *parsed_result,
 138                             struct cmdline *cl,
 139                             __attribute__((unused)) void *data)
 140 {
 141         cmdline_printf(cl, "Simple demo example of multi-process in RTE\n\n"
 142                         "This is a readline-like interface that can be used to\n"
 143                         "send commands to the simple app. Commands supported are:\n\n"
 144                         "- send [string]\n" "- help\n" "- quit\n\n");
 145 }
 146
 147 cmdline_parse_token_string_t cmd_help_help =
 148         TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
 149
 150 cmdline_parse_inst_t cmd_help = {
 151         .f = cmd_help_parsed,  /* function to call */
 152         .data = NULL,      /* 2nd arg of func */
 153         .help_str = "show help",
 154         .tokens = {        /* token list, NULL terminated */
 155                 (void *)&cmd_help_help,
 156                 NULL,
 157         },
 158 };
 159
 160 /****** CONTEXT (list of instruction) */
 161 cmdline_parse_ctx_t simple_mp_ctx[] = {
 162                 (cmdline_parse_inst_t *)&cmd_send,
 163                 (cmdline_parse_inst_t *)&cmd_quit,
 164                 (cmdline_parse_inst_t *)&cmd_help,
 165         NULL,
 166 };