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 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_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 47 void 48 sfc_kvargs_cleanup(struct sfc_adapter *sa) 49 { 50 rte_kvargs_free(sa->kvargs); 51 } 52 53 static int 54 sfc_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 66 int 67 sfc_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 76 int 77 sfc_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 } 99 100 int 101 sfc_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 } 118 119 int 120 sfc_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