From: Arik Nemtsov <arik@xxxxxxxxxx>
Allow setting bandwidth related regulatory flags. These flags are mapped
to the corresponding channel flags in the specified range.
Make sure the new flags are consulted when calculating the maximum
bandwidth allowed by a regulatory-rule.
Also allow propagating the GO_CONCURRENT modifier from a reg-rule to a
channel.
Change-Id: I1b0506ab332cdd268cbf4b02e03574f5c30ba5c0
Signed-off-by: Arik Nemtsov <arikx.nemtsov@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
include/uapi/linux/nl80211.h | 12 ++++++++++++
net/wireless/reg.c | 30 ++++++++++++++++++++++++++++--
2 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 406010d..f332231 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2558,6 +2558,11 @@ enum nl80211_sched_scan_match_attr {
* @NL80211_RRF_AUTO_BW: maximum available bandwidth should be calculated
* base on contiguous rules and wider channels will be allowed to cross
* multiple contiguous/overlapping frequency ranges.
+ * @NL80211_RRF_GO_CONCURRENT: See &NL80211_FREQUENCY_ATTR_GO_CONCURRENT
+ * @NL80211_RRF_NO_HT40MINUS: channels can't be used in HT40- operation
+ * @NL80211_RRF_NO_HT40PLUS: channels can't be used in HT40+ operation
+ * @NL80211_RRF_NO_80MHZ: 80MHz operation not allowed
+ * @NL80211_RRF_NO_160MHZ: 160MHz operation not allowed
*/
enum nl80211_reg_rule_flags {
NL80211_RRF_NO_OFDM = 1<<0,
@@ -2570,11 +2575,18 @@ enum nl80211_reg_rule_flags {
NL80211_RRF_NO_IR = 1<<7,
__NL80211_RRF_NO_IBSS = 1<<8,
NL80211_RRF_AUTO_BW = 1<<11,
+ NL80211_RRF_GO_CONCURRENT = 1<<12,
+ NL80211_RRF_NO_HT40MINUS = 1<<13,
+ NL80211_RRF_NO_HT40PLUS = 1<<14,
+ NL80211_RRF_NO_80MHZ = 1<<15,
+ NL80211_RRF_NO_160MHZ = 1<<16,
};
#define NL80211_RRF_PASSIVE_SCAN NL80211_RRF_NO_IR
#define NL80211_RRF_NO_IBSS NL80211_RRF_NO_IR
#define NL80211_RRF_NO_IR NL80211_RRF_NO_IR
+#define NL80211_RRF_NO_HT40 (NL80211_RRF_NO_HT40MINUS |\
+ NL80211_RRF_NO_HT40PLUS)
/* For backport compatibility with older userspace */
#define NL80211_RRF_NO_IR_ALL (NL80211_RRF_NO_IR | __NL80211_RRF_NO_IBSS)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 558b0e3..efd6d0d 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -572,8 +572,9 @@ static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy)
return get_cfg80211_regdom();
}
-unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
- const struct ieee80211_reg_rule *rule)
+static unsigned int
+reg_get_max_bandwidth_from_range(const struct ieee80211_regdomain *rd,
+ const struct ieee80211_reg_rule *rule)
{
const struct ieee80211_freq_range *freq_range = &rule->freq_range;
const struct ieee80211_freq_range *freq_range_tmp;
@@ -621,6 +622,21 @@ unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
return end_freq - start_freq;
}
+unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
+ const struct ieee80211_reg_rule *rule)
+{
+ unsigned int bw = reg_get_max_bandwidth_from_range(rd, rule);
+
+ if (rule->flags & NL80211_RRF_NO_160MHZ)
+ bw = min_t(unsigned int, bw, MHZ_TO_KHZ(80));
+ if (rule->flags & NL80211_RRF_NO_80MHZ)
+ bw = min_t(unsigned int, bw, MHZ_TO_KHZ(40));
+ if (rule->flags & NL80211_RRF_NO_HT40)
+ bw = min_t(unsigned int, bw, MHZ_TO_KHZ(20));
+
+ return bw;
+}
+
/* Sanity check on a regulatory rule */
static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule)
{
@@ -906,6 +922,16 @@ static u32 map_regdom_flags(u32 rd_flags)
channel_flags |= IEEE80211_CHAN_NO_OFDM;
if (rd_flags & NL80211_RRF_NO_OUTDOOR)
channel_flags |= IEEE80211_CHAN_INDOOR_ONLY;
+ if (rd_flags & NL80211_RRF_GO_CONCURRENT)
+ channel_flags |= IEEE80211_CHAN_GO_CONCURRENT;
+ if (rd_flags & NL80211_RRF_NO_HT40MINUS)
+ channel_flags |= IEEE80211_CHAN_NO_HT40MINUS;
+ if (rd_flags & NL80211_RRF_NO_HT40PLUS)
+ channel_flags |= IEEE80211_CHAN_NO_HT40PLUS;
+ if (rd_flags & NL80211_RRF_NO_80MHZ)
+ channel_flags |= IEEE80211_CHAN_NO_80MHZ;
+ if (rd_flags & NL80211_RRF_NO_160MHZ)
+ channel_flags |= IEEE80211_CHAN_NO_160MHZ;
return channel_flags;
}
--
1.8.3.2
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