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scan: Support freq_set in scan_parameters

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This way we can tell the kernel to only scan on particular frequencies
This commit is contained in:
Andrew Zaborowski 2016-12-23 05:37:59 -05:00 committed by Denis Kenzior
parent ed1538d5bb
commit b0f51a2527
2 changed files with 42 additions and 1 deletions
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42
src/scan.c
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@ -249,13 +249,50 @@ static void scan_done(struct l_genl_msg *msg, void *userdata)
sr->trigger(0, sr->userdata); sr->trigger(0, sr->userdata);
} }
struct scan_freq_append_data {
struct l_genl_msg *msg;
int count;
};
static void scan_freq_append(uint32_t freq, void *user_data)
{
struct scan_freq_append_data *data = user_data;
l_genl_msg_append_attr(data->msg, data->count++, 4, &freq);
}
static void scan_build_attr_scan_frequencies(struct l_genl_msg *msg,
struct scan_freq_set *freqs)
{
struct scan_freq_append_data append_data = { msg, 0 };
l_genl_msg_enter_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES);
scan_freq_set_foreach(freqs, scan_freq_append, &append_data);
l_genl_msg_leave_nested(msg);
}
static void scan_freq_count(uint32_t freq, void *user_data)
{
int *count = user_data;
*count += 1;
}
static struct l_genl_msg *scan_build_cmd(uint32_t ifindex, bool passive, static struct l_genl_msg *scan_build_cmd(uint32_t ifindex, bool passive,
const struct scan_parameters *params) const struct scan_parameters *params)
{ {
struct l_genl_msg *msg; struct l_genl_msg *msg;
int n_channels = 0;
if (params->freqs)
scan_freq_set_foreach(params->freqs, scan_freq_count,
&n_channels);
msg = l_genl_msg_new_sized(NL80211_CMD_TRIGGER_SCAN, msg = l_genl_msg_new_sized(NL80211_CMD_TRIGGER_SCAN,
32 + params->extra_ie_size); 32 + params->extra_ie_size +
4 * n_channels);
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &ifindex); l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &ifindex);
if (!passive) { if (!passive) {
@ -269,6 +306,9 @@ static struct l_genl_msg *scan_build_cmd(uint32_t ifindex, bool passive,
params->extra_ie_size, params->extra_ie_size,
params->extra_ie); params->extra_ie);
if (params->freqs)
scan_build_attr_scan_frequencies(msg, params->freqs);
return msg; return msg;
} }

1
src/scan.h
View File

@ -67,6 +67,7 @@ struct scan_bss {
struct scan_parameters { struct scan_parameters {
const uint8_t *extra_ie; const uint8_t *extra_ie;
size_t extra_ie_size; size_t extra_ie_size;
struct scan_freq_set *freqs;
}; };
uint32_t scan_passive(uint32_t ifindex, scan_trigger_func_t trigger, uint32_t scan_passive(uint32_t ifindex, scan_trigger_func_t trigger,