ceph/src/spdk/dpdk/drivers/net/sfc/sfc_kvargs.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2016-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #include <stdbool.h>
  11 #include <strings.h>
  12
  13 #include <rte_devargs.h>
  14 #include <rte_kvargs.h>
  15
  16 #include "sfc.h"
  17 #include "sfc_kvargs.h"
  18
  19 int
  20 sfc_kvargs_parse(struct sfc_adapter *sa)
  21 {
  22         struct rte_eth_dev *eth_dev = (sa)->eth_dev;
  23         struct rte_devargs *devargs = eth_dev->device->devargs;
  24         const char **params = (const char *[]){
  25                 SFC_KVARG_STATS_UPDATE_PERIOD_MS,
  26                 SFC_KVARG_PERF_PROFILE,
  27                 SFC_KVARG_RX_DATAPATH,
  28                 SFC_KVARG_TX_DATAPATH,
  29                 SFC_KVARG_FW_VARIANT,
  30                 SFC_KVARG_RXD_WAIT_TIMEOUT_NS,
  31                 NULL,
  32         };
  33
  34         if (devargs == NULL)
  35                 return 0;
  36
  37         sa->kvargs = rte_kvargs_parse(devargs->args, params);
  38         if (sa->kvargs == NULL)
  39                 return EINVAL;
  40
  41         return 0;
  42 }
  43
  44 void
  45 sfc_kvargs_cleanup(struct sfc_adapter *sa)
  46 {
  47         rte_kvargs_free(sa->kvargs);
  48 }
  49
  50 static int
  51 sfc_kvarg_match_value(const char *value, const char * const *values,
  52                       unsigned int n_values)
  53 {
  54         unsigned int i;
  55
  56         for (i = 0; i < n_values; ++i)
  57                 if (strcasecmp(value, values[i]) == 0)
  58                         return 1;
  59
  60         return 0;
  61 }
  62
  63 int
  64 sfc_kvargs_process(struct sfc_adapter *sa, const char *key_match,
  65                    arg_handler_t handler, void *opaque_arg)
  66 {
  67         if (sa->kvargs == NULL)
  68                 return 0;
  69
  70         return -rte_kvargs_process(sa->kvargs, key_match, handler, opaque_arg);
  71 }
  72
  73 int
  74 sfc_kvarg_bool_handler(__rte_unused const char *key,
  75                        const char *value_str, void *opaque)
  76 {
  77         const char * const true_strs[] = {
  78                 "1", "y", "yes", "on", "true"
  79         };
  80         const char * const false_strs[] = {
  81                 "0", "n", "no", "off", "false"
  82         };
  83         bool *value = opaque;
  84
  85         if (sfc_kvarg_match_value(value_str, true_strs,
  86                                   RTE_DIM(true_strs)))
  87                 *value = true;
  88         else if (sfc_kvarg_match_value(value_str, false_strs,
  89                                        RTE_DIM(false_strs)))
  90                 *value = false;
  91         else
  92                 return -EINVAL;
  93
  94         return 0;
  95 }
  96
  97 int
  98 sfc_kvarg_long_handler(__rte_unused const char *key,
  99                        const char *value_str, void *opaque)
 100 {
 101         long value;
 102         char *endptr;
 103
 104         if (!value_str || !opaque)
 105                 return -EINVAL;
 106
 107         value = strtol(value_str, &endptr, 0);
 108         if (endptr == value_str)
 109                 return -EINVAL;
 110
 111         *(long *)opaque = value;
 112
 113         return 0;
 114 }
 115
 116 int
 117 sfc_kvarg_string_handler(__rte_unused const char *key,
 118                          const char *value_str, void *opaque)
 119 {
 120         *(const char **)opaque = value_str;
 121
 122         return 0;
 123 }