cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard

ETSI standard defines "Offchannel CAC" as:
"Off-Channel CAC is performed by a number of non-continuous checks
spread over a period in time. This period, which is required to
determine the presence of radar signals, is defined as the Off-Channel
CAC Time..
Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time
4 hours..".
mac80211 implementation refers to a dedicated hw chain used for continuous
radar monitoring. Rename offchannel_* references to background_* in
order to avoid confusion with ETSI standard.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

3 files changed, 22 insertions, 22 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c9a9073d4c2a..e29d904eccff 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4073,14 +4073,14 @@ struct mgmt_frame_regs {
  *	those to decrypt (Re)Association Request and encrypt (Re)Association
  *	Response frame.
  *
- * @set_radar_offchan: Configure dedicated offchannel chain available for
+ * @set_radar_background: Configure dedicated offchannel chain available for
  *	radar/CAC detection on some hw. This chain can't be used to transmit
  *	or receive frames and it is bounded to a running wdev.
- *	Offchannel radar/CAC detection allows to avoid the CAC downtime
+ *	Background radar/CAC detection allows to avoid the CAC downtime
  *	switching to a different channel during CAC detection on the selected
  *	radar channel.
  *	The caller is expected to set chandef pointer to NULL in order to
- *	disable offchannel CAC/radar detection.
+ *	disable background CAC/radar detection.
  */
 struct cfg80211_ops {
 	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -4413,8 +4413,8 @@ struct cfg80211_ops {
 				struct cfg80211_color_change_settings *params);
 	int     (*set_fils_aad)(struct wiphy *wiphy, struct net_device *dev,
 				struct cfg80211_fils_aad *fils_aad);
-	int	(*set_radar_offchan)(struct wiphy *wiphy,
-				     struct cfg80211_chan_def *chandef);
+	int	(*set_radar_background)(struct wiphy *wiphy,
+					struct cfg80211_chan_def *chandef);
 };
 
 /*
@@ -7626,9 +7626,9 @@ cfg80211_radar_event(struct wiphy *wiphy,
 }
 
 static inline void
-cfg80211_offchan_radar_event(struct wiphy *wiphy,
-			     struct cfg80211_chan_def *chandef,
-			     gfp_t gfp)
+cfg80211_background_radar_event(struct wiphy *wiphy,
+				struct cfg80211_chan_def *chandef,
+				gfp_t gfp)
 {
 	__cfg80211_radar_event(wiphy, chandef, true, gfp);
 }
@@ -7663,13 +7663,13 @@ void cfg80211_cac_event(struct net_device *netdev,
 			enum nl80211_radar_event event, gfp_t gfp);
 
 /**
- * cfg80211_offchan_cac_abort - Channel Availability Check offchan abort event
+ * cfg80211_background_cac_abort - Channel Availability Check offchan abort event
  * @wiphy: the wiphy
  *
  * This function is called by the driver when a Channel Availability Check
  * (CAC) is aborted by a offchannel dedicated chain.
  */
-void cfg80211_offchan_cac_abort(struct wiphy *wiphy);
+void cfg80211_background_cac_abort(struct wiphy *wiphy);
 
 /**
  * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 28e66cdae3ec..8907338d52b5 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3939,14 +3939,14 @@ struct ieee80211_prep_tx_info {
  *	twt structure.
  * @twt_teardown_request: Update the hw with TWT teardown request received
  *	from the peer.
- * @set_radar_offchan: Configure dedicated offchannel chain available for
+ * @set_radar_background: Configure dedicated offchannel chain available for
  *	radar/CAC detection on some hw. This chain can't be used to transmit
  *	or receive frames and it is bounded to a running wdev.
- *	Offchannel radar/CAC detection allows to avoid the CAC downtime
+ *	Background radar/CAC detection allows to avoid the CAC downtime
  *	switching to a different channel during CAC detection on the selected
  *	radar channel.
  *	The caller is expected to set chandef pointer to NULL in order to
- *	disable offchannel CAC/radar detection.
+ *	disable background CAC/radar detection.
  * @net_fill_forward_path: Called from .ndo_fill_forward_path in order to
  *	resolve a path for hardware flow offloading
  */
@@ -4277,8 +4277,8 @@ struct ieee80211_ops {
 			      struct ieee80211_twt_setup *twt);
 	void (*twt_teardown_request)(struct ieee80211_hw *hw,
 				     struct ieee80211_sta *sta, u8 flowid);
-	int (*set_radar_offchan)(struct ieee80211_hw *hw,
-				 struct cfg80211_chan_def *chandef);
+	int (*set_radar_background)(struct ieee80211_hw *hw,
+				    struct cfg80211_chan_def *chandef);
 	int (*net_fill_forward_path)(struct ieee80211_hw *hw,
 				     struct ieee80211_vif *vif,
 				     struct ieee80211_sta *sta,
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index a8e20d25252b..5ce20fb44f24 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2646,10 +2646,10 @@ enum nl80211_commands {
  *	Mandatory parameter for the transmitting interface to enable MBSSID.
  *	Optional for the non-transmitting interfaces.
  *
- * @NL80211_ATTR_RADAR_OFFCHAN: Configure dedicated offchannel chain available for
- *	radar/CAC detection on some hw. This chain can't be used to transmit
- *	or receive frames and it is bounded to a running wdev.
- *	Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * @NL80211_ATTR_RADAR_BACKGROUND: Configure dedicated offchannel chain
+ *	available for radar/CAC detection on some hw. This chain can't be used
+ *	to transmit or receive frames and it is bounded to a running wdev.
+ *	Background radar/CAC detection allows to avoid the CAC downtime
  *	switching on a different channel during CAC detection on the selected
  *	radar channel.
  *
@@ -3159,7 +3159,7 @@ enum nl80211_attrs {
 	NL80211_ATTR_MBSSID_CONFIG,
 	NL80211_ATTR_MBSSID_ELEMS,
 
-	NL80211_ATTR_RADAR_OFFCHAN,
+	NL80211_ATTR_RADAR_BACKGROUND,
 
 	/* add attributes here, update the policy in nl80211.c */
 
@@ -6066,7 +6066,7 @@ enum nl80211_feature_flags {
  *	frames. Userspace has to share FILS AAD details to the driver by using
  *	@NL80211_CMD_SET_FILS_AAD.
  *
- * @NL80211_EXT_FEATURE_RADAR_OFFCHAN: Device supports offchannel radar/CAC
+ * @NL80211_EXT_FEATURE_RADAR_BACKGROUND: Device supports background radar/CAC
  *	detection.
  *
  * @NUM_NL80211_EXT_FEATURES: number of extended features.
@@ -6135,7 +6135,7 @@ enum nl80211_ext_feature_index {
 	NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
 	NL80211_EXT_FEATURE_BSS_COLOR,
 	NL80211_EXT_FEATURE_FILS_CRYPTO_OFFLOAD,
-	NL80211_EXT_FEATURE_RADAR_OFFCHAN,
+	NL80211_EXT_FEATURE_RADAR_BACKGROUND,
 
 	/* add new features before the definition below */
 	NUM_NL80211_EXT_FEATURES,