1 /*
2 * Copyright (c) 2024 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 /**
8 * @brief File containing utility function definitions for the
9 * Wi-Fi driver.
10 */
11
12 #include <util.h>
13 #include "host_rpu_data_if.h"
14
nrf_wifi_utils_hex_str_to_val(unsigned char * hex_arr,unsigned int hex_arr_sz,unsigned char * str)15 int nrf_wifi_utils_hex_str_to_val(unsigned char *hex_arr,
16 unsigned int hex_arr_sz,
17 unsigned char *str)
18 {
19 unsigned int i = 0;
20 unsigned int j = 0;
21 unsigned char ch = 0;
22 unsigned char val = 0;
23 unsigned int len = 0;
24 int ret = -1;
25
26 len = nrf_wifi_osal_strlen(str);
27
28 if (len / 2 > hex_arr_sz) {
29 nrf_wifi_osal_log_err("%s: String length (%d) greater than array size (%d)",
30 __func__,
31 len,
32 hex_arr_sz);
33 goto out;
34 }
35
36 if (len % 2) {
37 nrf_wifi_osal_log_err("%s:String length = %d, is not a multiple of 2",
38 __func__,
39 len);
40 goto out;
41 }
42
43 for (i = 0; i < len; i++) {
44 /* Convert each character to lower case */
45 ch = ((str[i] >= 'A' && str[i] <= 'Z') ? str[i] + 32 : str[i]);
46
47 if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f')) {
48 nrf_wifi_osal_log_err("%s: Invalid hex character in string %d",
49 __func__,
50 ch);
51 goto out;
52 }
53
54 if (ch >= '0' && ch <= '9') {
55 ch = ch - '0';
56 } else {
57 ch = ch - 'a' + 10;
58 }
59
60 val += ch;
61
62 if (!(i % 2)) {
63 val <<= 4;
64 } else {
65 hex_arr[j] = val;
66 j++;
67 val = 0;
68 }
69 }
70
71 ret = j;
72 out:
73 return ret;
74 }
75
76
nrf_wifi_utils_is_mac_addr_valid(const char * mac_addr)77 bool nrf_wifi_utils_is_mac_addr_valid(const char *mac_addr)
78 {
79 unsigned char zero_addr[NRF_WIFI_ETH_ADDR_LEN] = {0};
80
81 return (mac_addr &&
82 (nrf_wifi_osal_mem_cmp(mac_addr,
83 zero_addr,
84 sizeof(zero_addr)) != 0) &&
85 !(mac_addr[0] & 0x1));
86 }
87
88
nrf_wifi_utils_chan_to_freq(enum nrf_wifi_band band,unsigned short chan)89 int nrf_wifi_utils_chan_to_freq(enum nrf_wifi_band band,
90 unsigned short chan)
91 {
92 int freq = -1;
93 unsigned short valid_5g_chans[] = {32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 96, 100, 104,
94 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 149, 153, 157, 159, 161, 163,
95 165, 167, 169, 171, 173, 175, 177};
96 unsigned char i = 0;
97
98 switch (band) {
99 case NRF_WIFI_BAND_2GHZ:
100 if ((chan >= 1) && (chan <= 13)) {
101 freq = (((chan - 1) * 5) + 2412);
102 } else if (chan == 14) {
103 freq = 2484;
104 } else {
105 nrf_wifi_osal_log_err("%s: Invalid channel value %d",
106 __func__,
107 chan);
108 goto out;
109 }
110 break;
111 case NRF_WIFI_BAND_5GHZ:
112 for (i = 0; i < ARRAY_SIZE(valid_5g_chans); i++) {
113 if (chan == valid_5g_chans[i]) {
114 freq = (chan * 5) + 5000;
115 break;
116 }
117 }
118
119 break;
120 default:
121 nrf_wifi_osal_log_err("%s: Invalid band value %d",
122 __func__,
123 band);
124 goto out;
125 }
126 out:
127 return freq;
128
129 }
130
