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util: add 6GHz support to scan_freq_set* APIs

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The 6GHz channels are stored and accessed identically to 5GHz,
just using a separate uintset object.
This commit is contained in:
James Prestwood 2022-02-25 09:58:04 -08:00 committed by Denis Kenzior
parent 1343cb928f
commit 5b6f1e3662
1 changed files with 39 additions and 14 deletions
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53
src/util.c
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@ -314,6 +314,7 @@ bool util_ip_prefix_tohl(const char *ip, uint8_t *prefix_out,
struct scan_freq_set {
uint16_t channels_2ghz;
struct l_uintset *channels_5ghz;
struct l_uintset *channels_6ghz;
};
struct scan_freq_set *scan_freq_set_new(void)
@ -322,6 +323,7 @@ struct scan_freq_set *scan_freq_set_new(void)
/* 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);
ret->channels_6ghz = l_uintset_new_from_range(1, 233);
return ret;
}
@ -329,6 +331,7 @@ struct scan_freq_set *scan_freq_set_new(void)
void scan_freq_set_free(struct scan_freq_set *freqs)
{
l_uintset_free(freqs->channels_5ghz);
l_uintset_free(freqs->channels_6ghz);
l_free(freqs);
}
@ -348,7 +351,7 @@ bool scan_freq_set_add(struct scan_freq_set *freqs, uint32_t freq)
case BAND_FREQ_5_GHZ:
return l_uintset_put(freqs->channels_5ghz, channel);
case BAND_FREQ_6_GHZ:
return false;
return l_uintset_put(freqs->channels_6ghz, channel);
}
return false;
@ -369,7 +372,7 @@ bool scan_freq_set_contains(const struct scan_freq_set *freqs, uint32_t freq)
case BAND_FREQ_5_GHZ:
return l_uintset_contains(freqs->channels_5ghz, channel);
case BAND_FREQ_6_GHZ:
return false;
return l_uintset_contains(freqs->channels_6ghz, channel);
}
return false;
@ -388,10 +391,15 @@ uint32_t scan_freq_set_get_bands(struct scan_freq_set *freqs)
if (l_uintset_find_min(freqs->channels_5ghz) <= max)
bands |= BAND_FREQ_5_GHZ;
max = l_uintset_get_max(freqs->channels_6ghz);
if (l_uintset_find_min(freqs->channels_6ghz) <= max)
bands |= BAND_FREQ_6_GHZ;
return bands;
}
static void scan_channels_5ghz_add(uint32_t channel, void *user_data)
static void scan_channels_add(uint32_t channel, void *user_data)
{
struct l_uintset *to = user_data;
@ -403,37 +411,41 @@ void scan_freq_set_merge(struct scan_freq_set *to,
{
to->channels_2ghz |= from->channels_2ghz;
l_uintset_foreach(from->channels_5ghz, scan_channels_5ghz_add,
l_uintset_foreach(from->channels_5ghz, scan_channels_add,
to->channels_5ghz);
l_uintset_foreach(from->channels_6ghz, scan_channels_add,
to->channels_6ghz);
}
bool scan_freq_set_isempty(const struct scan_freq_set *set)
{
if (set->channels_2ghz == 0 && l_uintset_isempty(set->channels_5ghz))
if (set->channels_2ghz == 0 && l_uintset_isempty(set->channels_5ghz) &&
l_uintset_isempty(set->channels_6ghz))
return true;
return false;
}
struct channels_5ghz_foreach_data {
struct channels_foreach_data {
scan_freq_set_func_t func;
enum band_freq band;
void *user_data;
};
static void scan_channels_5ghz_frequency(uint32_t channel, void *user_data)
static void scan_channels_foreach(uint32_t channel, void *user_data)
{
const struct channels_5ghz_foreach_data *channels_5ghz_data = user_data;
const struct channels_foreach_data *channels_data = user_data;
uint32_t freq;
freq = band_channel_to_freq(channel, BAND_FREQ_5_GHZ);
freq = band_channel_to_freq(channel, channels_data->band);
channels_5ghz_data->func(freq, channels_5ghz_data->user_data);
channels_data->func(freq, channels_data->user_data);
}
void scan_freq_set_foreach(const struct scan_freq_set *freqs,
scan_freq_set_func_t func, void *user_data)
{
struct channels_5ghz_foreach_data data = { };
struct channels_foreach_data data = { };
uint8_t channel;
uint32_t freq;
@ -441,10 +453,14 @@ void scan_freq_set_foreach(const struct scan_freq_set *freqs,
return;
data.func = func;
data.band = BAND_FREQ_5_GHZ;
data.user_data = user_data;
l_uintset_foreach(freqs->channels_5ghz, scan_channels_5ghz_frequency,
&data);
l_uintset_foreach(freqs->channels_5ghz, scan_channels_foreach, &data);
data.band = BAND_FREQ_6_GHZ;
l_uintset_foreach(freqs->channels_6ghz, scan_channels_foreach, &data);
if (!freqs->channels_2ghz)
return;
@ -472,6 +488,14 @@ void scan_freq_set_constrain(struct scan_freq_set *set,
l_uintset_free(set->channels_5ghz);
set->channels_5ghz = intersection;
intersection = l_uintset_intersect(constraint->channels_6ghz,
set->channels_6ghz);
if (!intersection)
return;
l_uintset_free(set->channels_6ghz);
set->channels_6ghz = intersection;
set->channels_2ghz &= constraint->channels_2ghz;
}
@ -491,7 +515,8 @@ uint32_t *scan_freq_set_to_fixed_array(const struct scan_freq_set *set,
uint32_t *freqs;
count = __builtin_popcount(set->channels_2ghz) +
l_uintset_size(set->channels_5ghz);
l_uintset_size(set->channels_5ghz) +
l_uintset_size(set->channels_6ghz);
if (!count)
return NULL;