If we are roaming we allow to follow beacon hints.
Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
drivers/net/wireless/ath9k/regd.c | 93 ++++++++++++++++++++++++-------------
1 files changed, 61 insertions(+), 32 deletions(-)
diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c
index eb0d1b7..f4595e2 100644
--- a/drivers/net/wireless/ath9k/regd.c
+++ b/drivers/net/wireless/ath9k/regd.c
@@ -160,13 +160,18 @@ static bool ath9k_is_radar_freq(u16 center_freq)
}
/*
- * Enable adhoc on 5 GHz if allowed by 11d.
- * Remove passive scan if channel is allowed by 11d,
- * except when on radar frequencies.
+ * N.B: These exception rules do not apply radar freqs.
+ *
+ * - We enable adhoc (or beaconing) if allowed by 11d
+ * - We enable active scan if the channel is allowed by 11d
+ * - If no country IE has been processed and a we determine we have
+ * received a beacon on a channel we can enable active scan and
+ * adhoc (or beaconing).
*/
-static void ath9k_reg_apply_5ghz_beaconing_flags(struct wiphy *wiphy,
+static void ath9k_reg_apply_beaconing_flags(struct wiphy *wiphy,
enum reg_set_by setby)
{
+ enum ieee80211_band band;
struct ieee80211_supported_band *sband;
const struct ieee80211_reg_rule *reg_rule;
struct ieee80211_channel *ch;
@@ -174,29 +179,50 @@ static void ath9k_reg_apply_5ghz_beaconing_flags(struct wiphy *wiphy,
u32 bandwidth = 0;
int r;
- if (setby != REGDOM_SET_BY_COUNTRY_IE)
- return;
- if (!wiphy->bands[IEEE80211_BAND_5GHZ])
- return;
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
- sband = wiphy->bands[IEEE80211_BAND_5GHZ];
- for (i = 0; i < sband->n_channels; i++) {
- ch = &sband->channels[i];
- r = freq_reg_info(wiphy, ch->center_freq,
- &bandwidth, ®_rule);
- if (r)
+ if (!wiphy->bands[band])
continue;
- /* If 11d had a rule for this channel ensure we enable adhoc
- * if it allows us to use it. Note that we would have disabled
- * it by applying our static world regdomain by default during
- * probe */
- if (!(reg_rule->flags & NL80211_RRF_NO_IBSS))
- ch->flags &= ~IEEE80211_CHAN_NO_IBSS;
- if (!ath9k_is_radar_freq(ch->center_freq))
- continue;
- if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
- ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
+
+ sband = wiphy->bands[band];
+
+ for (i = 0; i < sband->n_channels; i++) {
+
+ ch = &sband->channels[i];
+
+ if (ath9k_is_radar_freq(ch->center_freq) ||
+ (ch->flags & IEEE80211_CHAN_RADAR))
+ continue;
+
+ if (setby == REGDOM_SET_BY_COUNTRY_IE) {
+ r = freq_reg_info(wiphy, ch->center_freq,
+ &bandwidth, ®_rule);
+ if (r)
+ 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_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);
+ }
+ }
}
+
}
/* Allows active scan scan on Ch 12 and 13 */
@@ -209,11 +235,12 @@ static void ath9k_reg_apply_active_scan_flags(struct wiphy *wiphy,
u32 bandwidth = 0;
int r;
- /* Force passive scan on Channels 12-13 */
sband = wiphy->bands[IEEE80211_BAND_2GHZ];
- /* If no country IE has been received always enable active scan
- * on these channels */
+ /*
+ * If no country IE has been received always enable active scan
+ * on these channels. This is only done for specific regulatory SKUs
+ */
if (setby != REGDOM_SET_BY_COUNTRY_IE) {
ch = &sband->channels[11]; /* CH 12 */
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
@@ -224,10 +251,12 @@ static void ath9k_reg_apply_active_scan_flags(struct wiphy *wiphy,
return;
}
- /* If a country IE has been recieved check its rule for this
+ /*
+ * 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 probe processing on
- * our custom regulatory domain. */
+ * would have been enforced by the initial processing of our
+ * custom regulatory domain.
+ */
ch = &sband->channels[11]; /* CH 12 */
r = freq_reg_info(wiphy, ch->center_freq, &bandwidth, ®_rule);
@@ -290,10 +319,10 @@ void ath9k_reg_apply_world_flags(struct wiphy *wiphy, enum reg_set_by setby)
case 0x63:
case 0x66:
case 0x67:
- ath9k_reg_apply_5ghz_beaconing_flags(wiphy, setby);
+ ath9k_reg_apply_beaconing_flags(wiphy, setby);
break;
case 0x68:
- ath9k_reg_apply_5ghz_beaconing_flags(wiphy, setby);
+ ath9k_reg_apply_beaconing_flags(wiphy, setby);
ath9k_reg_apply_active_scan_flags(wiphy, setby);
break;
}
--
1.6.0.3
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