ceph/src/spdk/dpdk/examples/quota_watermark/qwctl/commands.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdint.h>
   7 #include <string.h>
   8 #include <termios.h>
   9
  10 #include <cmdline_rdline.h>
  11 #include <cmdline_parse.h>
  12 #include <cmdline_parse_num.h>
  13 #include <cmdline_parse_string.h>
  14 #include <cmdline.h>
  15
  16 #include <rte_ring.h>
  17
  18 #include "qwctl.h"
  19 #include "../include/conf.h"
  20
  21
  22 /**
  23  * help command
  24  */
  25
  26 struct cmd_help_tokens {
  27         cmdline_fixed_string_t verb;
  28 };
  29
  30 cmdline_parse_token_string_t cmd_help_verb =
  31                 TOKEN_STRING_INITIALIZER(struct cmd_help_tokens, verb, "help");
  32
  33 static void
  34 cmd_help_handler(__attribute__((unused)) void *parsed_result,
  35                 struct cmdline *cl,
  36                 __attribute__((unused)) void *data)
  37 {
  38         cmdline_printf(cl, "Available commands:\n"
  39                         "- help\n"
  40                         "- set  [ring_name|variable] <value>\n"
  41                         "- show [ring_name|variable]\n"
  42                         "\n"
  43                         "Available variables:\n"
  44                         "- low_watermark\n"
  45                         "- quota\n"
  46                         "- ring names follow the core%%u_port%%u format\n");
  47 }
  48
  49 cmdline_parse_inst_t cmd_help = {
  50                 .f = cmd_help_handler,
  51                 .data = NULL,
  52                 .help_str = "show help",
  53                 .tokens = {
  54                                 (void *) &cmd_help_verb,
  55                                 NULL,
  56                 },
  57 };
  58
  59
  60 /**
  61  * set command
  62  */
  63
  64 struct cmd_set_tokens {
  65         cmdline_fixed_string_t verb;
  66         cmdline_fixed_string_t variable;
  67         uint32_t value;
  68 };
  69
  70 cmdline_parse_token_string_t cmd_set_verb =
  71                 TOKEN_STRING_INITIALIZER(struct cmd_set_tokens, verb, "set");
  72
  73 cmdline_parse_token_string_t cmd_set_variable =
  74                 TOKEN_STRING_INITIALIZER(struct cmd_set_tokens, variable, NULL);
  75
  76 cmdline_parse_token_num_t cmd_set_value =
  77                 TOKEN_NUM_INITIALIZER(struct cmd_set_tokens, value, UINT32);
  78
  79 static void
  80 cmd_set_handler(__attribute__((unused)) void *parsed_result,
  81                 struct cmdline *cl,
  82                 __attribute__((unused)) void *data)
  83 {
  84         struct cmd_set_tokens *tokens = parsed_result;
  85         struct rte_ring *ring;
  86
  87         if (!strcmp(tokens->variable, "quota")) {
  88
  89                 if (tokens->value > 0 && tokens->value <= MAX_PKT_QUOTA)
  90                         *quota = tokens->value;
  91                 else
  92                         cmdline_printf(cl, "quota must be between 1 and %u\n",
  93                                         MAX_PKT_QUOTA);
  94         }
  95
  96         else if (!strcmp(tokens->variable, "low_watermark")) {
  97
  98                 if (tokens->value <= 100)
  99                         *low_watermark = tokens->value * RING_SIZE / 100;
 100                 else
 101                         cmdline_printf(cl,
 102                                         "low_watermark must be between 0%% and 100%%\n");
 103         }
 104
 105         else {
 106
 107                 ring = rte_ring_lookup(tokens->variable);
 108                 if (ring == NULL)
 109                         cmdline_printf(cl, "Cannot find ring \"%s\"\n",
 110                                         tokens->variable);
 111                 else
 112                         if (tokens->value >= *low_watermark * 100 / RING_SIZE
 113                                         && tokens->value <= 100)
 114                                 *high_watermark = tokens->value *
 115                                                 RING_SIZE / 100;
 116                         else
 117                                 cmdline_printf(cl,
 118                                         "ring high watermark must be between %u%% and 100%%\n",
 119                                         *low_watermark * 100 / RING_SIZE);
 120         }
 121 }
 122
 123 cmdline_parse_inst_t cmd_set = {
 124                 .f = cmd_set_handler,
 125                 .data = NULL,
 126                 .help_str = "Set a variable value",
 127                 .tokens = {
 128                                 (void *) &cmd_set_verb,
 129                                 (void *) &cmd_set_variable,
 130                                 (void *) &cmd_set_value,
 131                                 NULL,
 132                 },
 133 };
 134
 135
 136 /**
 137  * show command
 138  */
 139
 140 struct cmd_show_tokens {
 141         cmdline_fixed_string_t verb;
 142         cmdline_fixed_string_t variable;
 143 };
 144
 145 cmdline_parse_token_string_t cmd_show_verb =
 146                 TOKEN_STRING_INITIALIZER(struct cmd_show_tokens, verb, "show");
 147
 148 cmdline_parse_token_string_t cmd_show_variable =
 149                 TOKEN_STRING_INITIALIZER(struct cmd_show_tokens,
 150                                 variable, NULL);
 151
 152
 153 static void
 154 cmd_show_handler(__attribute__((unused)) void *parsed_result,
 155                 struct cmdline *cl,
 156                 __attribute__((unused)) void *data)
 157 {
 158         struct cmd_show_tokens *tokens = parsed_result;
 159         struct rte_ring *ring;
 160
 161         if (!strcmp(tokens->variable, "quota"))
 162                 cmdline_printf(cl, "Global quota: %d\n", *quota);
 163
 164         else if (!strcmp(tokens->variable, "low_watermark"))
 165                 cmdline_printf(cl, "Global low_watermark: %u\n",
 166                                 *low_watermark);
 167
 168         else {
 169
 170                 ring = rte_ring_lookup(tokens->variable);
 171                 if (ring == NULL)
 172                         cmdline_printf(cl, "Cannot find ring \"%s\"\n",
 173                                         tokens->variable);
 174                 else
 175                         rte_ring_dump(stdout, ring);
 176         }
 177 }
 178
 179 cmdline_parse_inst_t cmd_show = {
 180                 .f = cmd_show_handler,
 181                 .data = NULL,
 182                 .help_str = "Show a variable value",
 183                 .tokens = {
 184                                 (void *) &cmd_show_verb,
 185                                 (void *) &cmd_show_variable,
 186                                 NULL,
 187                 },
 188 };
 189
 190
 191 cmdline_parse_ctx_t qwctl_ctx[] = {
 192                 (cmdline_parse_inst_t *)&cmd_help,
 193                 (cmdline_parse_inst_t *)&cmd_set,
 194                 (cmdline_parse_inst_t *)&cmd_show,
 195                 NULL,
 196 };