drivers/net/octeontx2/otx2_ethdev_devargs.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <inttypes.h>
   6 #include <math.h>
   7
   8 #include "otx2_ethdev.h"
   9
  10 static int
  11 parse_flow_max_priority(const char *key, const char *value, void *extra_args)
  12 {
  13         RTE_SET_USED(key);
  14         uint16_t val;
  15
  16         val = atoi(value);
  17
  18         /* Limit the max priority to 32 */
  19         if (val < 1 || val > 32)
  20                 return -EINVAL;
  21
  22         *(uint16_t *)extra_args = val;
  23
  24         return 0;
  25 }
  26
  27 static int
  28 parse_flow_prealloc_size(const char *key, const char *value, void *extra_args)
  29 {
  30         RTE_SET_USED(key);
  31         uint16_t val;
  32
  33         val = atoi(value);
  34
  35         /* Limit the prealloc size to 32 */
  36         if (val < 1 || val > 32)
  37                 return -EINVAL;
  38
  39         *(uint16_t *)extra_args = val;
  40
  41         return 0;
  42 }
  43
  44 static int
  45 parse_reta_size(const char *key, const char *value, void *extra_args)
  46 {
  47         RTE_SET_USED(key);
  48         uint32_t val;
  49
  50         val = atoi(value);
  51
  52         if (val <= ETH_RSS_RETA_SIZE_64)
  53                 val = ETH_RSS_RETA_SIZE_64;
  54         else if (val > ETH_RSS_RETA_SIZE_64 && val <= ETH_RSS_RETA_SIZE_128)
  55                 val = ETH_RSS_RETA_SIZE_128;
  56         else if (val > ETH_RSS_RETA_SIZE_128 && val <= ETH_RSS_RETA_SIZE_256)
  57                 val = ETH_RSS_RETA_SIZE_256;
  58         else
  59                 val = NIX_RSS_RETA_SIZE;
  60
  61         *(uint16_t *)extra_args = val;
  62
  63         return 0;
  64 }
  65
  66 static int
  67 parse_flag(const char *key, const char *value, void *extra_args)
  68 {
  69         RTE_SET_USED(key);
  70
  71         *(uint16_t *)extra_args = atoi(value);
  72
  73         return 0;
  74 }
  75
  76 static int
  77 parse_sqb_count(const char *key, const char *value, void *extra_args)
  78 {
  79         RTE_SET_USED(key);
  80         uint32_t val;
  81
  82         val = atoi(value);
  83
  84         if (val < NIX_MIN_SQB || val > NIX_MAX_SQB)
  85                 return -EINVAL;
  86
  87         *(uint16_t *)extra_args = val;
  88
  89         return 0;
  90 }
  91
  92 static int
  93 parse_switch_header_type(const char *key, const char *value, void *extra_args)
  94 {
  95         RTE_SET_USED(key);
  96
  97         if (strcmp(value, "higig2") == 0)
  98                 *(uint16_t *)extra_args = OTX2_PRIV_FLAGS_HIGIG;
  99
 100         if (strcmp(value, "dsa") == 0)
 101                 *(uint16_t *)extra_args = OTX2_PRIV_FLAGS_EDSA;
 102
 103         return 0;
 104 }
 105
 106 #define OTX2_RSS_RETA_SIZE "reta_size"
 107 #define OTX2_SCL_ENABLE "scalar_enable"
 108 #define OTX2_MAX_SQB_COUNT "max_sqb_count"
 109 #define OTX2_FLOW_PREALLOC_SIZE "flow_prealloc_size"
 110 #define OTX2_FLOW_MAX_PRIORITY "flow_max_priority"
 111 #define OTX2_SWITCH_HEADER_TYPE "switch_header"
 112
 113 int
 114 otx2_ethdev_parse_devargs(struct rte_devargs *devargs, struct otx2_eth_dev *dev)
 115 {
 116         uint16_t rss_size = NIX_RSS_RETA_SIZE;
 117         uint16_t sqb_count = NIX_MAX_SQB;
 118         uint16_t flow_prealloc_size = 8;
 119         uint16_t switch_header_type = 0;
 120         uint16_t flow_max_priority = 3;
 121         uint16_t scalar_enable = 0;
 122         struct rte_kvargs *kvlist;
 123
 124         if (devargs == NULL)
 125                 goto null_devargs;
 126
 127         kvlist = rte_kvargs_parse(devargs->args, NULL);
 128         if (kvlist == NULL)
 129                 goto exit;
 130
 131         rte_kvargs_process(kvlist, OTX2_RSS_RETA_SIZE,
 132                            &parse_reta_size, &rss_size);
 133         rte_kvargs_process(kvlist, OTX2_SCL_ENABLE,
 134                            &parse_flag, &scalar_enable);
 135         rte_kvargs_process(kvlist, OTX2_MAX_SQB_COUNT,
 136                            &parse_sqb_count, &sqb_count);
 137         rte_kvargs_process(kvlist, OTX2_FLOW_PREALLOC_SIZE,
 138                            &parse_flow_prealloc_size, &flow_prealloc_size);
 139         rte_kvargs_process(kvlist, OTX2_FLOW_MAX_PRIORITY,
 140                            &parse_flow_max_priority, &flow_max_priority);
 141         rte_kvargs_process(kvlist, OTX2_SWITCH_HEADER_TYPE,
 142                            &parse_switch_header_type, &switch_header_type);
 143         rte_kvargs_free(kvlist);
 144
 145 null_devargs:
 146         dev->scalar_ena = scalar_enable;
 147         dev->max_sqb_count = sqb_count;
 148         dev->rss_info.rss_size = rss_size;
 149         dev->npc_flow.flow_prealloc_size = flow_prealloc_size;
 150         dev->npc_flow.flow_max_priority = flow_max_priority;
 151         dev->npc_flow.switch_header_type = switch_header_type;
 152         return 0;
 153
 154 exit:
 155         return -EINVAL;
 156 }
 157
 158 RTE_PMD_REGISTER_PARAM_STRING(net_octeontx2,
 159                               OTX2_RSS_RETA_SIZE "=<64|128|256>"
 160                               OTX2_SCL_ENABLE "=1"
 161                               OTX2_MAX_SQB_COUNT "=<8-512>"
 162                               OTX2_FLOW_PREALLOC_SIZE "=<1-32>"
 163                               OTX2_FLOW_MAX_PRIORITY "=<1-32>"
 164                               OTX2_SWITCH_HEADER_TYPE "=<higig2|dsa>");