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authorLuis R. Rodriguez <lrodriguez@atheros.com>2009-01-22 15:05:52 -0800
committerJohn W. Linville <linville@tuxdriver.com>2009-01-29 16:01:18 -0500
commitf976376de0d6a9697fb635369f12ae00251f4566 (patch)
tree11e94926ba6da6ed420bce7c82276e705838dca5 /net/wireless
parent716f9392e2b84cacc18cc11f7427cb98adeb1c3d (diff)
cfg80211: Allow for strict regulatory settings
This allows drivers to request strict regulatory settings to be applied to its devices. This is desirable for devices where proper calibration and compliance can only be gauranteed for for the device's programmed regulatory domain. Regulatory domain settings will be ignored until the device's own regulatory domain is properly configured. If no regulatory domain is received only the world regulatory domain will be applied -- if OLD_REG (default to "US") is not enabled. If OLD_REG behaviour is not acceptable to drivers they must update their wiphy with a custom reuglatory prior to wiphy registration. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/reg.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index cad4daadba0d..89e0d8b3cf1e 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -867,6 +867,22 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
power_rule = &reg_rule->power_rule;
+ if (last_request->initiator == REGDOM_SET_BY_DRIVER &&
+ last_request->wiphy && last_request->wiphy == wiphy &&
+ last_request->wiphy->strict_regulatory) {
+ /* This gaurantees the driver's requested regulatory domain
+ * will always be used as a base for further regulatory
+ * settings */
+ chan->flags = chan->orig_flags =
+ map_regdom_flags(reg_rule->flags);
+ chan->max_antenna_gain = chan->orig_mag =
+ (int) MBI_TO_DBI(power_rule->max_antenna_gain);
+ chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth);
+ chan->max_power = chan->orig_mpwr =
+ (int) MBM_TO_DBM(power_rule->max_eirp);
+ return;
+ }
+
chan->flags = flags | map_regdom_flags(reg_rule->flags);
chan->max_antenna_gain = min(chan->orig_mag,
(int) MBI_TO_DBI(power_rule->max_antenna_gain));
@@ -897,6 +913,11 @@ static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby)
if (setby == REGDOM_SET_BY_CORE &&
wiphy->custom_regulatory)
return true;
+ /* wiphy->regd will be set once the device has its own
+ * desired regulatory domain set */
+ if (wiphy->strict_regulatory && !wiphy->regd &&
+ !is_world_regdom(last_request->alpha2))
+ return true;
return false;
}
@@ -1155,10 +1176,15 @@ new_request:
void regulatory_hint(struct wiphy *wiphy, const char *alpha2)
{
+ int r;
BUG_ON(!alpha2);
mutex_lock(&cfg80211_drv_mutex);
- __regulatory_hint(wiphy, REGDOM_SET_BY_DRIVER, alpha2, 0, ENVIRON_ANY);
+ r = __regulatory_hint(wiphy, REGDOM_SET_BY_DRIVER,
+ alpha2, 0, ENVIRON_ANY);
+ /* This is required so that the orig_* parameters are saved */
+ if (r == -EALREADY && wiphy->strict_regulatory)
+ wiphy_update_regulatory(wiphy, REGDOM_SET_BY_DRIVER);
mutex_unlock(&cfg80211_drv_mutex);
}
EXPORT_SYMBOL(regulatory_hint);