/* 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 (!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_NO_IR)
ch->flags &= ~IEEE80211_CHAN_NO_IR;
ch = &sband->channels[12]; /* CH 13 */
if (ch->flags & IEEE80211_CHAN_NO_IR)
ch->flags &= ~IEEE80211_CHAN_NO_IR;
return;
}
/*
*If a country IE has been received 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 */
reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(ch->center_freq));
if (!IS_ERR(reg_rule)) {
if (!(reg_rule->flags & NL80211_RRF_NO_IR))
if (ch->flags & IEEE80211_CHAN_NO_IR)
ch->flags &= ~IEEE80211_CHAN_NO_IR;
}
ch = &sband->channels[12]; /* CH 13 */
reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(ch->center_freq));
if (!IS_ERR(reg_rule)) {
if (!(reg_rule->flags & NL80211_RRF_NO_IR))
if (ch->flags & IEEE80211_CHAN_NO_IR)
ch->flags &= ~IEEE80211_CHAN_NO_IR;
}
}
static void ath_force_clear_no_ir_chan(struct wiphy *wiphy,
struct ieee80211_channel *ch)
{
const struct ieee80211_reg_rule *reg_rule;
reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(ch->center_freq));
if (IS_ERR(reg_rule))
return;
if (!(reg_rule->flags & NL80211_RRF_NO_IR))
if (ch->flags & IEEE80211_CHAN_NO_IR)
ch->flags &= ~IEEE80211_CHAN_NO_IR;
}
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;
}
}
}
}
struct ieee80211_regdomain *
iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
int num_of_ch, __le32 *channels, u16 fw_mcc)
{
int ch_idx;
u16 ch_flags, prev_ch_flags = 0;
const u8 *nvm_chan = cfg->device_family == IWL_DEVICE_FAMILY_8000 ?
iwl_nvm_channels_family_8000 : iwl_nvm_channels;
struct ieee80211_regdomain *regd;
int size_of_regd;
struct ieee80211_reg_rule *rule;
enum nl80211_band band;
int center_freq, prev_center_freq = 0;
int valid_rules = 0;
bool new_rule;
int max_num_ch = cfg->device_family == IWL_DEVICE_FAMILY_8000 ?
IWL_NUM_CHANNELS_FAMILY_8000 : IWL_NUM_CHANNELS;
if (WARN_ON_ONCE(num_of_ch > NL80211_MAX_SUPP_REG_RULES))
return ERR_PTR(-EINVAL);
if (WARN_ON(num_of_ch > max_num_ch))
num_of_ch = max_num_ch;
IWL_DEBUG_DEV(dev, IWL_DL_LAR, "building regdom for %d channels\n",
num_of_ch);
/* build a regdomain rule for every valid channel */
size_of_regd =
sizeof(struct ieee80211_regdomain) +
num_of_ch * sizeof(struct ieee80211_reg_rule);
regd = kzalloc(size_of_regd, GFP_KERNEL);
if (!regd)
return ERR_PTR(-ENOMEM);
for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
ch_flags = (u16)__le32_to_cpup(channels + ch_idx);
band = (ch_idx < NUM_2GHZ_CHANNELS) ?
NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
center_freq = ieee80211_channel_to_frequency(nvm_chan[ch_idx],
band);
new_rule = false;
if (!(ch_flags & NVM_CHANNEL_VALID)) {
IWL_DEBUG_DEV(dev, IWL_DL_LAR,
"Ch. %d Flags %x [%sGHz] - No traffic\n",
nvm_chan[ch_idx],
ch_flags,
(ch_idx >= NUM_2GHZ_CHANNELS) ?
"5.2" : "2.4");
continue;
}
/* we can't continue the same rule */
if (ch_idx == 0 || prev_ch_flags != ch_flags ||
center_freq - prev_center_freq > 20) {
valid_rules++;
new_rule = true;
}
rule = ®d->reg_rules[valid_rules - 1];
if (new_rule)
rule->freq_range.start_freq_khz =
MHZ_TO_KHZ(center_freq - 10);
rule->freq_range.end_freq_khz = MHZ_TO_KHZ(center_freq + 10);
/* this doesn't matter - not used by FW */
rule->power_rule.max_antenna_gain = DBI_TO_MBI(6);
rule->power_rule.max_eirp =
DBM_TO_MBM(IWL_DEFAULT_MAX_TX_POWER);
rule->flags = iwl_nvm_get_regdom_bw_flags(nvm_chan, ch_idx,
ch_flags, cfg);
/* rely on auto-calculation to merge BW of contiguous chans */
rule->flags |= NL80211_RRF_AUTO_BW;
rule->freq_range.max_bandwidth_khz = 0;
prev_ch_flags = ch_flags;
prev_center_freq = center_freq;
IWL_DEBUG_DEV(dev, IWL_DL_LAR,
"Ch. %d [%sGHz] %s%s%s%s%s%s%s%s%s(0x%02x): Ad-Hoc %ssupported\n",
center_freq,
band == NL80211_BAND_5GHZ ? "5.2" : "2.4",
CHECK_AND_PRINT_I(VALID),
CHECK_AND_PRINT_I(ACTIVE),
CHECK_AND_PRINT_I(RADAR),
CHECK_AND_PRINT_I(WIDE),
CHECK_AND_PRINT_I(40MHZ),
CHECK_AND_PRINT_I(80MHZ),
CHECK_AND_PRINT_I(160MHZ),
CHECK_AND_PRINT_I(INDOOR_ONLY),
CHECK_AND_PRINT_I(GO_CONCURRENT),
ch_flags,
((ch_flags & NVM_CHANNEL_ACTIVE) &&
!(ch_flags & NVM_CHANNEL_RADAR))
? "" : "not ");
}
regd->n_reg_rules = valid_rules;
/* set alpha2 from FW. */
regd->alpha2[0] = fw_mcc >> 8;
regd->alpha2[1] = fw_mcc & 0xff;
return regd;
}
static struct ieee80211_regdomain *
mwifiex_create_custom_regdomain(struct mwifiex_private *priv,
u8 *buf, u16 buf_len)
{
u16 num_chan = buf_len / 2;
struct ieee80211_regdomain *regd;
struct ieee80211_reg_rule *rule;
bool new_rule;
int regd_size, idx, freq, prev_freq = 0;
u32 bw, prev_bw = 0;
u8 chflags, prev_chflags = 0, valid_rules = 0;
if (WARN_ON_ONCE(num_chan > NL80211_MAX_SUPP_REG_RULES))
return ERR_PTR(-EINVAL);
regd_size = sizeof(struct ieee80211_regdomain) +
num_chan * sizeof(struct ieee80211_reg_rule);
regd = kzalloc(regd_size, GFP_KERNEL);
if (!regd)
return ERR_PTR(-ENOMEM);
for (idx = 0; idx < num_chan; idx++) {
u8 chan;
enum nl80211_band band;
chan = *buf++;
if (!chan) {
kfree(regd);
return NULL;
}
chflags = *buf++;
band = (chan <= 14) ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
freq = ieee80211_channel_to_frequency(chan, band);
new_rule = false;
if (chflags & MWIFIEX_CHANNEL_DISABLED)
continue;
if (band == NL80211_BAND_5GHZ) {
if (!(chflags & MWIFIEX_CHANNEL_NOHT80))
bw = MHZ_TO_KHZ(80);
else if (!(chflags & MWIFIEX_CHANNEL_NOHT40))
bw = MHZ_TO_KHZ(40);
else
bw = MHZ_TO_KHZ(20);
} else {
if (!(chflags & MWIFIEX_CHANNEL_NOHT40))
bw = MHZ_TO_KHZ(40);
else
bw = MHZ_TO_KHZ(20);
}
if (idx == 0 || prev_chflags != chflags || prev_bw != bw ||
freq - prev_freq > 20) {
valid_rules++;
new_rule = true;
}
rule = ®d->reg_rules[valid_rules - 1];
rule->freq_range.end_freq_khz = MHZ_TO_KHZ(freq + 10);
prev_chflags = chflags;
prev_freq = freq;
prev_bw = bw;
if (!new_rule)
continue;
rule->freq_range.start_freq_khz = MHZ_TO_KHZ(freq - 10);
rule->power_rule.max_eirp = DBM_TO_MBM(19);
if (chflags & MWIFIEX_CHANNEL_PASSIVE)
rule->flags = NL80211_RRF_NO_IR;
if (chflags & MWIFIEX_CHANNEL_DFS)
rule->flags = NL80211_RRF_DFS;
rule->freq_range.max_bandwidth_khz = bw;
}
regd->n_reg_rules = valid_rules;
regd->alpha2[0] = '9';
regd->alpha2[1] = '9';
return regd;
}
/**
* cds_process_regulatory_data() - process regulatory data
* @wiphy: wiphy
* @band_capability: band_capability
*
* Return: int
*/
static int cds_process_regulatory_data(struct wiphy *wiphy,
uint8_t band_capability, bool reset)
{
int i, j, m;
int k = 0, n = 0;
hdd_context_t *hdd_ctx;
const struct ieee80211_reg_rule *reg_rule;
struct ieee80211_channel *chan;
sRegulatoryChannel *temp_chan_k;
sRegulatoryChannel *temp_chan_n;
sRegulatoryChannel *temp_chan;
hdd_ctx = cds_get_context(CDF_MODULE_ID_HDD);
if (NULL == hdd_ctx) {
CDF_TRACE(CDF_MODULE_ID_CDF, CDF_TRACE_LEVEL_ERROR,
"invalid hdd_ctx pointer");
return CDF_STATUS_E_FAULT;
}
hdd_ctx->isVHT80Allowed = 0;
if (band_capability == eCSR_BAND_24)
CDF_TRACE(CDF_MODULE_ID_CDF, CDF_TRACE_LEVEL_INFO,
"band capability is set to 2G only");
for (i = 0, m = 0; i < IEEE80211_NUM_BANDS; i++) {
if (i == IEEE80211_BAND_2GHZ && band_capability == eCSR_BAND_5G)
continue;
else if (i == IEEE80211_BAND_5GHZ
&& band_capability == eCSR_BAND_24)
continue;
if (wiphy->bands[i] == NULL)
continue;
if (i == 0)
m = 0;
else
m = wiphy->bands[i-1]->n_channels + m;
for (j = 0; j < wiphy->bands[i]->n_channels; j++) {
k = m + j;
n = cds_bw20_ch_index_to_bw40_ch_index(k);
chan = &(wiphy->bands[i]->channels[j]);
temp_chan_k =
&(reg_table.regDomains[temp_reg_domain].
channels[k]);
temp_chan_n =
&(reg_table.regDomains[temp_reg_domain].
channels[n]);
if ((!reset) &&
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) || defined(WITH_BACKPORTS)
(wiphy->regulatory_flags &
REGULATORY_CUSTOM_REG)) {
#else
(wiphy->flags &
WIPHY_FLAG_CUSTOM_REGULATORY)) {
#endif
reg_rule = freq_reg_info(wiphy,
MHZ_TO_KHZ(chan->
center_freq));
if (!IS_ERR(reg_rule)) {
chan->flags &=
~IEEE80211_CHAN_DISABLED;
if (!(reg_rule->flags &
NL80211_RRF_DFS)) {
CDF_TRACE(CDF_MODULE_ID_CDF,
CDF_TRACE_LEVEL_INFO,
"%s: Remove passive scan restriction for %u",
__func__,
chan->center_freq);
chan->flags &=
~IEEE80211_CHAN_RADAR;
}
if (!(reg_rule->flags &
NL80211_RRF_PASSIVE_SCAN)) {
CDF_TRACE(CDF_MODULE_ID_CDF,
CDF_TRACE_LEVEL_INFO,
"%s: Remove passive scan restriction for %u",
__func__,
chan->center_freq);
chan->flags &=
~IEEE80211_CHAN_PASSIVE_SCAN;
}
if (!(reg_rule->flags &
NL80211_RRF_NO_IBSS)) {
CDF_TRACE(CDF_MODULE_ID_CDF,
CDF_TRACE_LEVEL_INFO,
"%s: Remove no ibss restriction for %u",
__func__,
chan->center_freq);
chan->flags &=
~IEEE80211_CHAN_NO_IBSS;
}
chan->max_power = MBM_TO_DBM(reg_rule->
power_rule.
max_eirp);
}
}
#ifdef FEATURE_STATICALLY_ADD_11P_CHANNELS
if (is_dsrc_channel(chan->center_freq)) {
temp_chan_k->enabled =
CHANNEL_STATE_ENABLE;
temp_chan_k->pwrLimit =
DEFAULT_11P_POWER;
temp_chan_k->flags = chan->flags;
} else
#endif
if (chan->flags & IEEE80211_CHAN_DISABLED) {
temp_chan_k->enabled =
CHANNEL_STATE_DISABLE;
temp_chan_k->flags = chan->flags;
if (n != -1) {
temp_chan_n->enabled =
CHANNEL_STATE_DISABLE;
temp_chan_n->flags = chan->flags;
}
} else if (chan->flags &
(IEEE80211_CHAN_RADAR |
IEEE80211_CHAN_PASSIVE_SCAN
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0))
|
IEEE80211_CHAN_INDOOR_ONLY
#endif
)) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0))
if (chan->flags &
IEEE80211_CHAN_INDOOR_ONLY)
chan->flags |=
IEEE80211_CHAN_PASSIVE_SCAN;
#endif
temp_chan_k->enabled = CHANNEL_STATE_DFS;
temp_chan_k->pwrLimit =
chan->max_power;
temp_chan_k->flags = chan->flags;
if (n != -1) {
if ((chan->flags &
IEEE80211_CHAN_NO_HT40) ==
IEEE80211_CHAN_NO_HT40) {
temp_chan_n->enabled =
CHANNEL_STATE_DISABLE;
} else {
temp_chan_n->enabled =
CHANNEL_STATE_DFS;
temp_chan_n->pwrLimit =
chan->max_power-3;
}
temp_chan_n->flags = chan->flags;
}
if ((chan->flags &
IEEE80211_CHAN_NO_80MHZ) == 0)
hdd_ctx->isVHT80Allowed = 1;
} else {
temp_chan_k->enabled = CHANNEL_STATE_ENABLE;
temp_chan_k->pwrLimit = chan->max_power;
temp_chan_k->flags = chan->flags;
if (n != -1) {
if ((chan->flags &
IEEE80211_CHAN_NO_HT40) ==
IEEE80211_CHAN_NO_HT40) {
temp_chan_n->enabled =
CHANNEL_STATE_DISABLE;
} else {
temp_chan_n->enabled =
CHANNEL_STATE_ENABLE;
temp_chan_n->pwrLimit =
chan->max_power - 3;
}
temp_chan_n->flags = chan->flags;
}
if ((chan->flags &
IEEE80211_CHAN_NO_80MHZ) == 0)
hdd_ctx->isVHT80Allowed = 1;
}
}
}
if (0 == (hdd_ctx->reg.eeprom_rd_ext &
(1 << WHAL_REG_EXT_FCC_CH_144))) {
temp_chan = &(reg_table.regDomains[temp_reg_domain].
channels[RF_CHAN_144]);
temp_chan->enabled =
CHANNEL_STATE_DISABLE;
}
if (k == 0)
return -1;
return 0;
}