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1 | #include <errno.h> | |
2 | #include <net/if.h> | |
3 | ||
4 | #include <netlink/genl/genl.h> | |
5 | #include <netlink/genl/family.h> | |
6 | #include <netlink/genl/ctrl.h> | |
7 | #include <netlink/msg.h> | |
8 | #include <netlink/attr.h> | |
9 | ||
10 | #include "nl80211.h" | |
11 | #include "iw.h" | |
12 | ||
13 | static void print_flag(const char *name, int *open) | |
14 | { | |
15 | if (!*open) | |
16 | printf(" ("); | |
17 | else | |
18 | printf(", "); | |
19 | printf(name); | |
20 | *open = 1; | |
21 | } | |
22 | ||
23 | static int print_phy_handler(struct nl_msg *msg, void *arg) | |
24 | { | |
25 | struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; | |
26 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
27 | ||
28 | struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; | |
29 | ||
30 | struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; | |
31 | static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { | |
32 | [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, | |
33 | [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, | |
34 | [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, | |
35 | [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, | |
36 | [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, | |
37 | }; | |
38 | ||
39 | struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; | |
40 | static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { | |
41 | [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, | |
42 | [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, | |
43 | }; | |
44 | ||
45 | struct nlattr *nl_band; | |
46 | struct nlattr *nl_freq; | |
47 | struct nlattr *nl_rate; | |
48 | struct nlattr *nl_mode; | |
49 | int bandidx = 1; | |
50 | int rem_band, rem_freq, rem_rate, rem_mode; | |
51 | int open; | |
52 | ||
53 | nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
54 | genlmsg_attrlen(gnlh, 0), NULL); | |
55 | ||
56 | if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) | |
57 | return NL_SKIP; | |
58 | ||
59 | if (tb_msg[NL80211_ATTR_WIPHY_NAME]) | |
60 | printf("Wiphy %s\n", nla_get_string(tb_msg[NL80211_ATTR_WIPHY_NAME])); | |
61 | ||
62 | nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { | |
63 | printf("\tBand %d:\n", bandidx); | |
64 | bandidx++; | |
65 | ||
66 | nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), | |
67 | nla_len(nl_band), NULL); | |
68 | ||
69 | printf("\t\tFrequencies:\n"); | |
70 | ||
71 | nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { | |
72 | nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), | |
73 | nla_len(nl_freq), freq_policy); | |
74 | if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) | |
75 | continue; | |
76 | printf("\t\t\t* %d MHz", nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ])); | |
77 | open = 0; | |
78 | if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) | |
79 | print_flag("disabled", &open); | |
80 | if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) | |
81 | print_flag("passive scanning", &open); | |
82 | if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) | |
83 | print_flag("no IBSS", &open); | |
84 | if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) | |
85 | print_flag("radar detection", &open); | |
86 | if (open) | |
87 | printf(")"); | |
88 | printf("\n"); | |
89 | } | |
90 | ||
91 | printf("\t\tBitrates:\n"); | |
92 | ||
93 | nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { | |
94 | nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), | |
95 | nla_len(nl_rate), rate_policy); | |
96 | if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) | |
97 | continue; | |
98 | printf("\t\t\t* %2.1f Mbps", 0.1 * nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE])); | |
99 | open = 0; | |
100 | if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE]) | |
101 | print_flag("short preamble supported", &open); | |
102 | if (open) | |
103 | printf(")"); | |
104 | printf("\n"); | |
105 | } | |
106 | } | |
107 | ||
108 | if (!tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES]) | |
109 | return NL_SKIP; | |
110 | ||
111 | printf("\tSupported interface modes:\n"); | |
112 | nla_for_each_nested(nl_mode, tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES], rem_mode) | |
113 | printf("\t\t * %s\n", iftype_name(nl_mode->nla_type)); | |
114 | ||
115 | return NL_SKIP; | |
116 | } | |
117 | ||
118 | static int handle_info(struct nl_cb *cb, | |
119 | struct nl_msg *msg, | |
120 | int argc, char **argv) | |
121 | { | |
122 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_phy_handler, NULL); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | TOPLEVEL(info, NULL, NL80211_CMD_GET_WIPHY, 0, CIB_PHY, handle_info); | |
127 | TOPLEVEL(list, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info); |