The patch adds support for Intelligent Transportation System (ITS-G5)
band as defined by ETSI EN 302 663 standard. This band is enabled by
a new configuration option CFG80211_REG_ITSG5_BAND, which depends on
CFG80211_CERTIFICATION_ONUS.
Signed-off-by: Jan Kaisrlik <kaisrja1@xxxxxxxxxxx>
Cc: Michal Sojka <sojkam1@xxxxxxxxxxx>
---
include/uapi/linux/nl80211.h | 2 ++
net/wireless/Kconfig | 21 +++++++++++++++++++++
net/wireless/reg.c | 4 ++++
3 files changed, 27 insertions(+)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index c0ab6b0..9defe0a 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2838,6 +2838,7 @@ enum nl80211_sched_scan_match_attr {
* @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
+ * @NL80211_RRF_ITSG5: band is reserved for Intelligent Transportation System
*/
enum nl80211_reg_rule_flags {
NL80211_RRF_NO_OFDM = 1<<0,
@@ -2855,6 +2856,7 @@ enum nl80211_reg_rule_flags {
NL80211_RRF_NO_HT40PLUS = 1<<14,
NL80211_RRF_NO_80MHZ = 1<<15,
NL80211_RRF_NO_160MHZ = 1<<16,
+ NL80211_RRF_ITSG5 = 1<<17,
};
#define NL80211_RRF_PASSIVE_SCAN NL80211_RRF_NO_IR
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index 4f5543d..2f7767c 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -132,6 +132,27 @@ config CFG80211_REG_RELAX_NO_IR
support this feature by declaring the appropriate channel flags and
capabilities in their registration flow.
+config CFG80211_REG_ITSG5_BAND
+ bool "cfg80211 support for ITS-G5 bands (5.9 GHz)"
+ def_bool n
+ depends on CFG80211_CERTIFICATION_ONUS
+ ---help---
+ This option enables support for Inteligent Transportation System (ITS)
+ band 5.855 to 5.925 GHz. The band is standardized for Europe in the ETSI
+ EN 302 663 standard. This band is split into several sub-bands:
+
+ - ITS-G5A (5.875 to 5.905 GHz) band is reserved for ITS road safety
+ related applications and is regulated by Commission Decision 2008/671/EC.
+
+ - ITS-G5B (5.855 to 5.875 GHz) band is reserved for ITS non-safety
+ applications and is regulated by ECC Recommendation ECC/REC/(08)01.
+
+ - ITS-G5D (5.905 to 5.925 GHz) band is reserved for future ITS
+ applications and is regulated by ECC Decision ECC/DEC(02)01.
+
+ Enable this option only if you work on the above mentioned applications
+ and comply with the regulatory documents.
+
config CFG80211_DEFAULT_PS
bool "enable powersave by default"
depends on CFG80211
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 2510b231..82e7b3b 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1020,6 +1020,10 @@ freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq,
rr = ®d->reg_rules[i];
fr = &rr->freq_range;
+ if (!config_enabled(CONFIG_CFG80211_REG_ITSG5_BAND) &&
+ (rr->flags & NL80211_RRF_ITSG5))
+ return ERR_PTR(-EPERM);
+
/*
* We only need to know if one frequency rule was
* was in center_freq's band, that's enough, so lets
--
2.1.4
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