2 #include <linux/nl80211.h>
5 #include <netlink/genl/genl.h>
6 #include <netlink/genl/family.h>
7 #include <netlink/genl/ctrl.h>
8 #include <netlink/msg.h>
9 #include <netlink/attr.h>
13 static void print_flag(const char *name
, int *open
)
23 static int print_phy_handler(struct nl_msg
*msg
, void *arg
)
25 struct nlattr
*tb_msg
[NL80211_ATTR_MAX
+ 1];
26 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
28 struct nlattr
*tb_band
[NL80211_BAND_ATTR_MAX
+ 1];
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
},
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
},
45 static const char *ifmodes
[NL80211_IFTYPE_MAX
+ 1] = {
56 struct nlattr
*nl_band
;
57 struct nlattr
*nl_freq
;
58 struct nlattr
*nl_rate
;
59 struct nlattr
*nl_mode
;
61 int rem_band
, rem_freq
, rem_rate
, rem_mode
;
64 nla_parse(tb_msg
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
65 genlmsg_attrlen(gnlh
, 0), NULL
);
67 if (!tb_msg
[NL80211_ATTR_WIPHY_BANDS
])
70 nla_for_each_nested(nl_band
, tb_msg
[NL80211_ATTR_WIPHY_BANDS
], rem_band
) {
71 printf("Band %d:\n", bandidx
);
74 nla_parse(tb_band
, NL80211_BAND_ATTR_MAX
, nla_data(nl_band
),
75 nla_len(nl_band
), NULL
);
77 printf("\tFrequencies:\n");
79 nla_for_each_nested(nl_freq
, tb_band
[NL80211_BAND_ATTR_FREQS
], rem_freq
) {
80 nla_parse(tb_freq
, NL80211_FREQUENCY_ATTR_MAX
, nla_data(nl_freq
),
81 nla_len(nl_freq
), freq_policy
);
82 if (!tb_freq
[NL80211_FREQUENCY_ATTR_FREQ
])
84 printf("\t\t* %d MHz", nla_get_u32(tb_freq
[NL80211_FREQUENCY_ATTR_FREQ
]));
86 if (tb_freq
[NL80211_FREQUENCY_ATTR_DISABLED
])
87 print_flag("disabled", &open
);
88 if (tb_freq
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
])
89 print_flag("passive scanning", &open
);
90 if (tb_freq
[NL80211_FREQUENCY_ATTR_NO_IBSS
])
91 print_flag("no IBSS", &open
);
92 if (tb_freq
[NL80211_FREQUENCY_ATTR_RADAR
])
93 print_flag("radar detection", &open
);
99 printf("\tBitrates:\n");
101 nla_for_each_nested(nl_rate
, tb_band
[NL80211_BAND_ATTR_RATES
], rem_rate
) {
102 nla_parse(tb_rate
, NL80211_BITRATE_ATTR_MAX
, nla_data(nl_rate
),
103 nla_len(nl_rate
), rate_policy
);
104 if (!tb_rate
[NL80211_BITRATE_ATTR_RATE
])
106 printf("\t\t* %2.1f Mbps", 0.1 * nla_get_u32(tb_rate
[NL80211_BITRATE_ATTR_RATE
]));
108 if (tb_rate
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE
])
109 print_flag("short preamble supported", &open
);
116 if (!tb_msg
[NL80211_ATTR_SUPPORTED_IFTYPES
])
119 printf("Supported interface modes:\n");
120 nla_for_each_nested(nl_mode
, tb_msg
[NL80211_ATTR_SUPPORTED_IFTYPES
], rem_mode
) {
121 if (nl_mode
->nla_type
> NL80211_IFTYPE_MAX
)
122 printf("\t * Unknown mode (%d)\n", nl_mode
->nla_type
);
124 printf("\t * %s\n", ifmodes
[nl_mode
->nla_type
]);
132 static int ack_wait_handler(struct nl_msg
*msg
, void *arg
)
140 int handle_info(struct nl80211_state
*state
, char *phy
, char *dev
)
144 struct nl_cb
*cb
= NULL
;
149 fprintf(stderr
, "failed to allocate netlink msg\n");
153 genlmsg_put(msg
, 0, 0, genl_family_get_id(state
->nl80211
), 0,
154 0, NL80211_CMD_GET_WIPHY
, 0);
156 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(dev
));
158 return -1; /* XXX TODO */
160 cb
= nl_cb_alloc(NL_CB_CUSTOM
);
164 if (nl_send_auto_complete(state
->nl_handle
, msg
) < 0)
167 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, print_phy_handler
, NULL
);
168 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, ack_wait_handler
, &finished
);
170 err
= nl_recvmsgs(state
->nl_handle
, cb
);
173 err
= nl_wait_for_ack(state
->nl_handle
);
183 fprintf(stderr
, "failed to get information: %d\n", err
);