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scan: Add scan_freq_set utility class

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This commit is contained in:
Denis Kenzior 2015-06-10 16:24:06 -05:00
parent 5ae63817b9
commit b70f5a239d
2 changed files with 67 additions and 0 deletions
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60
src/scan.c
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@ -664,6 +664,66 @@ uint8_t scan_freq_to_channel(uint32_t freq, enum scan_band *out_band)
return 0;
}
struct scan_freq_set {
uint16_t channels_2ghz;
struct l_uintset *channels_5ghz;
};
struct scan_freq_set *scan_freq_set_new(void)
{
struct scan_freq_set *ret = l_new(struct scan_freq_set, 1);
/* 802.11-2012, 8.4.2.10 hints that 200 is the largest channel number */
ret->channels_5ghz = l_uintset_new_from_range(1, 200);
return ret;
}
void scan_freq_set_free(struct scan_freq_set *freqs)
{
l_free(freqs->channels_5ghz);
l_free(freqs);
}
bool scan_freq_set_add(struct scan_freq_set *freqs, uint32_t freq)
{
enum scan_band band;
uint8_t channel;
channel = scan_freq_to_channel(freq, &band);
if (!channel)
return false;
switch (band) {
case SCAN_BAND_2_4_GHZ:
freqs->channels_2ghz |= 1 << (channel - 1);
return true;
case SCAN_BAND_5_GHZ:
return l_uintset_put(freqs->channels_5ghz, channel);
}
return false;
}
bool scan_freq_set_contains(struct scan_freq_set *freqs, uint32_t freq)
{
enum scan_band band;
uint8_t channel;
channel = scan_freq_to_channel(freq, &band);
if (!channel)
return false;
switch (band) {
case SCAN_BAND_2_4_GHZ:
return freqs->channels_2ghz & (1 << (channel - 1));
case SCAN_BAND_5_GHZ:
return l_uintset_contains(freqs->channels_5ghz, channel);
}
return false;
}
bool scan_init(struct l_genl_family *in, scan_notify_func_t func)
{
nl80211 = in;

7
src/scan.h
View File

@ -36,6 +36,8 @@ typedef void (*scan_func_t)(struct l_genl_msg *msg, void *user_data);
typedef bool (*scan_notify_func_t)(uint32_t wiphy, uint32_t ifindex,
struct l_queue *bss_list);
struct scan_freq_set;
struct scan_bss {
uint8_t addr[6];
uint32_t frequency;
@ -70,5 +72,10 @@ void bss_get_supported_ciphers(struct scan_bss *bss,
uint8_t scan_freq_to_channel(uint32_t freq, enum scan_band *out_band);
struct scan_freq_set *scan_freq_set_new(void);
void scan_freq_set_free(struct scan_freq_set *freqs);
bool scan_freq_set_add(struct scan_freq_set *freqs, uint32_t freq);
bool scan_freq_set_contains(struct scan_freq_set *freqs, uint32_t freq);
bool scan_init(struct l_genl_family *in, scan_notify_func_t func);
bool scan_free();