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Commit | Line | Data |
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14a0380d LR |
1 | #include <net/if.h> |
2 | #include <errno.h> | |
3 | #include <string.h> | |
ffc08bcb | 4 | #include <stdbool.h> |
14a0380d LR |
5 | |
6 | #include <netlink/genl/genl.h> | |
7 | #include <netlink/genl/family.h> | |
8 | #include <netlink/genl/ctrl.h> | |
9 | #include <netlink/msg.h> | |
10 | #include <netlink/attr.h> | |
11 | ||
f408e01b | 12 | #include "nl80211.h" |
14a0380d LR |
13 | #include "iw.h" |
14 | ||
4698bfc2 JB |
15 | SECTION(reg); |
16 | ||
7ab65227 LR |
17 | #define MHZ_TO_KHZ(freq) ((freq) * 1000) |
18 | #define KHZ_TO_MHZ(freq) ((freq) / 1000) | |
19 | #define DBI_TO_MBI(gain) ((gain) * 100) | |
20 | #define MBI_TO_DBI(gain) ((gain) / 100) | |
21 | #define DBM_TO_MBM(gain) ((gain) * 100) | |
22 | #define MBM_TO_DBM(gain) ((gain) / 100) | |
23 | ||
ffc08bcb | 24 | static bool isalpha_upper(char letter) |
14a0380d LR |
25 | { |
26 | if (letter >= 65 && letter <= 90) | |
ffc08bcb LR |
27 | return true; |
28 | return false; | |
14a0380d LR |
29 | } |
30 | ||
ffc08bcb | 31 | static bool is_alpha2(char *alpha2) |
14a0380d LR |
32 | { |
33 | if (isalpha_upper(alpha2[0]) && isalpha_upper(alpha2[1])) | |
ffc08bcb LR |
34 | return true; |
35 | return false; | |
14a0380d LR |
36 | } |
37 | ||
ffc08bcb | 38 | static bool is_world_regdom(char *alpha2) |
14a0380d LR |
39 | { |
40 | /* ASCII 0 */ | |
41 | if (alpha2[0] == 48 && alpha2[1] == 48) | |
ffc08bcb LR |
42 | return true; |
43 | return false; | |
14a0380d LR |
44 | } |
45 | ||
601c6ab2 LR |
46 | char *reg_initiator_to_string(__u8 initiator) |
47 | { | |
48 | switch (initiator) { | |
49 | case NL80211_REGDOM_SET_BY_CORE: | |
50 | return "the wireless core upon initialization"; | |
51 | case NL80211_REGDOM_SET_BY_USER: | |
52 | return "a user"; | |
53 | case NL80211_REGDOM_SET_BY_DRIVER: | |
54 | return "a driver"; | |
55 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
56 | return "a country IE"; | |
57 | default: | |
58 | return "BUG"; | |
59 | } | |
60 | } | |
61 | ||
7c37a24d JB |
62 | static int handle_reg_set(struct nl80211_state *state, |
63 | struct nl_cb *cb, | |
1c05c109 JB |
64 | struct nl_msg *msg, |
65 | int argc, char **argv) | |
14a0380d | 66 | { |
14a0380d LR |
67 | char alpha2[3]; |
68 | ||
1c05c109 | 69 | if (argc < 1) |
5e75fd04 | 70 | return 1; |
14a0380d LR |
71 | |
72 | if (!is_alpha2(argv[0]) && !is_world_regdom(argv[0])) { | |
73 | fprintf(stderr, "not a valid ISO/IEC 3166-1 alpha2\n"); | |
40ffa988 | 74 | fprintf(stderr, "Special non-alpha2 usable entries:\n"); |
14a0380d | 75 | fprintf(stderr, "\t00\tWorld Regulatory domain\n"); |
5e75fd04 | 76 | return 2; |
14a0380d LR |
77 | } |
78 | ||
79 | alpha2[0] = argv[0][0]; | |
80 | alpha2[1] = argv[0][1]; | |
81 | alpha2[2] = '\0'; | |
82 | ||
83 | argc--; | |
84 | argv++; | |
85 | ||
1c05c109 | 86 | if (argc) |
5e75fd04 | 87 | return 1; |
14a0380d LR |
88 | |
89 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); | |
90 | ||
70391ccf | 91 | return 0; |
14a0380d | 92 | nla_put_failure: |
70391ccf | 93 | return -ENOBUFS; |
14a0380d | 94 | } |
1c05c109 | 95 | COMMAND(reg, set, "<ISO/IEC 3166-1 alpha2>", |
70cf4544 JB |
96 | NL80211_CMD_REQ_SET_REG, 0, CIB_NONE, handle_reg_set, |
97 | "Notify the kernel about the current regulatory domain."); | |
7ab65227 LR |
98 | |
99 | static int print_reg_handler(struct nl_msg *msg, void *arg) | |
100 | ||
101 | { | |
102 | #define PARSE_FLAG(nl_flag, string_value) do { \ | |
103 | if ((flags & nl_flag)) { \ | |
104 | printf(", %s", string_value); \ | |
105 | } \ | |
106 | } while (0) | |
107 | struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; | |
108 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
109 | char *alpha2; | |
110 | struct nlattr *nl_rule; | |
111 | int rem_rule; | |
112 | static struct nla_policy reg_rule_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { | |
113 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
114 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
115 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
116 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
117 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
118 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
119 | }; | |
120 | ||
121 | nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
122 | genlmsg_attrlen(gnlh, 0), NULL); | |
123 | ||
124 | if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) { | |
125 | printf("No alpha2\n"); | |
126 | return NL_SKIP; | |
127 | } | |
128 | ||
129 | if (!tb_msg[NL80211_ATTR_REG_RULES]) { | |
130 | printf("No reg rules\n"); | |
131 | return NL_SKIP; | |
132 | } | |
133 | ||
134 | alpha2 = nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]); | |
135 | printf("country %s:\n", alpha2); | |
136 | ||
137 | nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) { | |
138 | struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; | |
139 | __u32 flags, start_freq_khz, end_freq_khz, max_bw_khz, max_ant_gain_mbi, max_eirp_mbm; | |
140 | ||
141 | nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_rule), nla_len(nl_rule), reg_rule_policy); | |
142 | ||
143 | flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]); | |
144 | start_freq_khz = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]); | |
145 | end_freq_khz = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]); | |
146 | max_bw_khz = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]); | |
147 | max_ant_gain_mbi = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); | |
148 | max_eirp_mbm = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]); | |
149 | ||
150 | ||
151 | printf("\t(%d - %d @ %d), (", | |
152 | KHZ_TO_MHZ(start_freq_khz), KHZ_TO_MHZ(end_freq_khz), KHZ_TO_MHZ(max_bw_khz)); | |
153 | ||
154 | if (MBI_TO_DBI(max_ant_gain_mbi)) | |
155 | printf("%d", MBI_TO_DBI(max_ant_gain_mbi)); | |
156 | else | |
157 | printf("N/A"); | |
158 | ||
159 | printf(", %d)", MBM_TO_DBM(max_eirp_mbm)); | |
160 | ||
161 | if (!flags) { | |
162 | printf("\n"); | |
163 | continue; | |
164 | } | |
165 | ||
166 | /* Sync this output format to match that of dbparse.py from wireless-regdb.git */ | |
167 | PARSE_FLAG(NL80211_RRF_NO_OFDM, "NO-OFDM"); | |
168 | PARSE_FLAG(NL80211_RRF_NO_CCK, "NO-CCK"); | |
169 | PARSE_FLAG(NL80211_RRF_NO_INDOOR, "NO-INDOOR"); | |
170 | PARSE_FLAG(NL80211_RRF_NO_OUTDOOR, "NO-OUTDOOR"); | |
171 | PARSE_FLAG(NL80211_RRF_DFS, "DFS"); | |
172 | PARSE_FLAG(NL80211_RRF_PTP_ONLY, "PTP-ONLY"); | |
173 | PARSE_FLAG(NL80211_RRF_PASSIVE_SCAN, "PASSIVE-SCAN"); | |
174 | PARSE_FLAG(NL80211_RRF_NO_IBSS, "NO-IBSS"); | |
175 | ||
176 | printf("\n"); | |
177 | } | |
178 | return NL_OK; | |
179 | #undef PARSE_FLAG | |
180 | } | |
181 | ||
7c37a24d JB |
182 | static int handle_reg_get(struct nl80211_state *state, |
183 | struct nl_cb *cb, | |
7ab65227 LR |
184 | struct nl_msg *msg, |
185 | int argc, char **argv) | |
186 | { | |
187 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_reg_handler, NULL); | |
188 | return 0; | |
189 | } | |
70cf4544 JB |
190 | COMMAND(reg, get, NULL, NL80211_CMD_GET_REG, 0, CIB_NONE, handle_reg_get, |
191 | "Print out the kernel's current regulatory domain information."); |