/*
*Always apply Radar/DFS rules on
*freq range 5260 MHz - 5700 MHz
*/
static void _rtl_reg_apply_radar_flags(struct wiphy *wiphy)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
unsigned int i;
if (!wiphy->bands[IEEE80211_BAND_5GHZ])
return;
sband = wiphy->bands[IEEE80211_BAND_5GHZ];
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (!_rtl_is_radar_freq(ch->center_freq))
continue;
/*
*We always enable radar detection/DFS on this
*frequency range. Additionally we also apply on
*this frequency range:
*- If STA mode does not yet have DFS supports disable
* active scanning
*- If adhoc mode does not support DFS yet then disable
* adhoc in the frequency.
*- If AP mode does not yet support radar detection/DFS
*do not allow AP mode
*/
if (!(ch->flags & IEEE80211_CHAN_DISABLED))
ch->flags |= IEEE80211_CHAN_RADAR |
IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN;
}
}
static void _rtl_reg_apply_beaconing_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator)
{
enum ieee80211_band band;
struct ieee80211_supported_band *sband;
const struct ieee80211_reg_rule *reg_rule;
struct ieee80211_channel *ch;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0))
u32 bandwidth = 0;
int r;
#endif
unsigned int i;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!wiphy->bands[band])
continue;
sband = wiphy->bands[band];
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (_rtl_is_radar_freq(ch->center_freq) ||
(ch->flags & IEEE80211_CHAN_RADAR))
continue;
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
reg_rule = freq_reg_info(wiphy, ch->center_freq);
if (IS_ERR(reg_rule))
continue;
#else
r = freq_reg_info(wiphy, ch->center_freq,
bandwidth, ®_rule);
if (r)
continue;
#endif
/*
*If 11d had a rule for this channel ensure
*we enable adhoc/beaconing if it allows us to
*use it. Note that we would have disabled it
*by applying our static world regdomain by
*default during init, prior to calling our
*regulatory_hint().
*/
if (!(reg_rule->flags & NL80211_RRF_NO_IBSS))
ch->flags &= ~IEEE80211_CHAN_NO_IBSS;
if (!(reg_rule->flags &
NL80211_RRF_PASSIVE_SCAN))
ch->flags &=
~IEEE80211_CHAN_PASSIVE_SCAN;
} else {
if (ch->beacon_found)
ch->flags &= ~(IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN);
}
}
}
}
static void _rtl_reg_apply_beaconing_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator)
{
enum ieee80211_band band;
struct ieee80211_supported_band *sband;
const struct ieee80211_reg_rule *reg_rule;
struct ieee80211_channel *ch;
unsigned int i;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!wiphy->bands[band])
continue;
sband = wiphy->bands[band];
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (_rtl_is_radar_freq(ch->center_freq) ||
(ch->flags & IEEE80211_CHAN_RADAR))
continue;
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
reg_rule = freq_reg_info(wiphy,
MHZ_TO_KHZ(ch->center_freq));
if (IS_ERR(reg_rule))
continue;
/*
*If 11d had a rule for this channel ensure
*we enable adhoc/beaconing if it allows us to
*use it. Note that we would have disabled it
*by applying our static world regdomain by
*default during init, prior to calling our
*regulatory_hint().
*/
if (!(reg_rule->flags & NL80211_RRF_NO_IR))
ch->flags &= ~IEEE80211_CHAN_NO_IR;
} else {
if (ch->beacon_found)
ch->flags &= ~IEEE80211_CHAN_NO_IR;
}
}
}
}
/* Allows active scan scan on Ch 12 and 13 */
static void _rtl_reg_apply_active_scan_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator
initiator)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
const struct ieee80211_reg_rule *reg_rule;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0))
u32 bandwidth = 0;
int r;
#endif
if (!wiphy->bands[IEEE80211_BAND_2GHZ])
return;
sband = wiphy->bands[IEEE80211_BAND_2GHZ];
/*
*If no country IE has been received always enable active scan
*on these channels. This is only done for specific regulatory SKUs
*/
if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
ch = &sband->channels[11]; /* CH 12 */
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
ch = &sband->channels[12]; /* CH 13 */
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
return;
}
/*
*If a country IE has been recieved check its rule for this
*channel first before enabling active scan. The passive scan
*would have been enforced by the initial processing of our
*custom regulatory domain.
*/
ch = &sband->channels[11]; /* CH 12 */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
reg_rule = freq_reg_info(wiphy, ch->center_freq);
if (!IS_ERR(reg_rule)) {
#else
r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
if (!r) {
#endif
if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
}
ch = &sband->channels[12]; /* CH 13 */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
reg_rule = freq_reg_info(wiphy, ch->center_freq);
if (!IS_ERR(reg_rule)) {
#else
r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
if (!r) {
#endif
if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
}
}
/*
*Always apply Radar/DFS rules on
*freq range 5260 MHz - 5700 MHz
*/
static void _rtl_reg_apply_radar_flags(struct wiphy *wiphy)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
unsigned int i;
if (!wiphy->bands[IEEE80211_BAND_5GHZ])
return;
sband = wiphy->bands[IEEE80211_BAND_5GHZ];
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (!_rtl_is_radar_freq(ch->center_freq))
continue;
/*
*We always enable radar detection/DFS on this
*frequency range. Additionally we also apply on
*this frequency range:
*- If STA mode does not yet have DFS supports disable
* active scanning
*- If adhoc mode does not support DFS yet then disable
* adhoc in the frequency.
*- If AP mode does not yet support radar detection/DFS
*do not allow AP mode
*/
if (!(ch->flags & IEEE80211_CHAN_DISABLED))
ch->flags |= IEEE80211_CHAN_RADAR |
IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN;
}
}
static void _rtl_reg_apply_world_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator,
struct rtl_regulatory *reg)
{
_rtl_reg_apply_beaconing_flags(wiphy, initiator);
_rtl_reg_apply_active_scan_flags(wiphy, initiator);
return;
}