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_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 } 124