LXR dpdk/drivers/net/sfc/sfc

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 *
   3 * Copyright(c) 2019-2021 Xilinx, Inc.
   4 * Copyright(c) 2016-2019 Solarflare Communications Inc.
   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
  19int
  20sfc_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_SWITCH_MODE,
  26                SFC_KVARG_REPRESENTOR,
  27                SFC_KVARG_STATS_UPDATE_PERIOD_MS,
  28                SFC_KVARG_PERF_PROFILE,
  29                SFC_KVARG_RX_DATAPATH,
  30                SFC_KVARG_TX_DATAPATH,
  31                SFC_KVARG_FW_VARIANT,
  32                SFC_KVARG_RXD_WAIT_TIMEOUT_NS,
  33                RTE_DEVARGS_KEY_CLASS,
  34                NULL,
  35        };
  36
  37        if (devargs == NULL)
  38                return 0;
  39
  40        sa->kvargs = rte_kvargs_parse(devargs->args, params);
  41        if (sa->kvargs == NULL)
  42                return EINVAL;
  43
  44        return 0;
  45}
  46
  47void
  48sfc_kvargs_cleanup(struct sfc_adapter *sa)
  49{
  50        rte_kvargs_free(sa->kvargs);
  51}
  52
  53static int
  54sfc_kvarg_match_value(const char *value, const char * const *values,
  55                      unsigned int n_values)
  56{
  57        unsigned int i;
  58
  59        for (i = 0; i < n_values; ++i)
  60                if (strcasecmp(value, values[i]) == 0)
  61                        return 1;
  62
  63        return 0;
  64}
  65
  66int
  67sfc_kvargs_process(struct sfc_adapter *sa, const char *key_match,
  68                   arg_handler_t handler, void *opaque_arg)
  69{
  70        if (sa->kvargs == NULL)
  71                return 0;
  72
  73        return -rte_kvargs_process(sa->kvargs, key_match, handler, opaque_arg);
  74}
  75
  76int
  77sfc_kvarg_bool_handler(__rte_unused const char *key,
  78                       const char *value_str, void *opaque)
  79{
  80        const char * const true_strs[] = {
  81                "1", "y", "yes", "on", "true"
  82        };
  83        const char * const false_strs[] = {
  84                "0", "n", "no", "off", "false"
  85        };
  86        bool *value = opaque;
  87
  88        if (sfc_kvarg_match_value(value_str, true_strs,
  89                                  RTE_DIM(true_strs)))
  90                *value = true;
  91        else if (sfc_kvarg_match_value(value_str, false_strs,
  92                                       RTE_DIM(false_strs)))
  93                *value = false;
  94        else
  95                return -EINVAL;
  96
  97        return 0;
  98}
  99
 100int
 101sfc_kvarg_long_handler(__rte_unused const char *key,
 102                       const char *value_str, void *opaque)
 103{
 104        long value;
 105        char *endptr;
 106
 107        if (!value_str || !opaque)
 108                return -EINVAL;
 109
 110        value = strtol(value_str, &endptr, 0);
 111        if (endptr == value_str)
 112                return -EINVAL;
 113
 114        *(long *)opaque = value;
 115
 116        return 0;
 117}
 118
 119int
 120sfc_kvarg_string_handler(__rte_unused const char *key,
 121                         const char *value_str, void *opaque)
 122{
 123        *(const char **)opaque = value_str;
 124
 125        return 0;
 126}
 127