cfg80211: consolidate passive-scan and no-ibss flags

These two flags are used for the same purpose, just
combine them into a no-ir flag to annotate no initiating
radiation is allowed.

Old userspace sending either flag will have it treated as
the no-ir flag. To be considerate to older userspace we
also send both the no-ir flag and the old no-ibss flags.
Newer userspace will have to be aware of older kernels.

Update all places in the tree using these flags with the
following semantic patch:

@@
@@
-NL80211_RRF_PASSIVE_SCAN
+NL80211_RRF_NO_IR
@@
@@
-NL80211_RRF_NO_IBSS
+NL80211_RRF_NO_IR
@@
@@
-IEEE80211_CHAN_PASSIVE_SCAN
+IEEE80211_CHAN_NO_IR
@@
@@
-IEEE80211_CHAN_NO_IBSS
+IEEE80211_CHAN_NO_IR
@@
@@
-NL80211_RRF_NO_IR | NL80211_RRF_NO_IR
+NL80211_RRF_NO_IR
@@
@@
-IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_IR
+IEEE80211_CHAN_NO_IR
@@
@@
-(NL80211_RRF_NO_IR)
+NL80211_RRF_NO_IR
@@
@@
-(IEEE80211_CHAN_NO_IR)
+IEEE80211_CHAN_NO_IR

Along with some hand-optimisations in documentation, to
remove duplicates and to fix some indentation.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[do all the driver updates in one go]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 24 insertions, 15 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 3eae46cb1acf..c1b887413234 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -91,9 +91,8 @@ enum ieee80211_band {
  * Channel flags set by the regulatory control code.
  *
  * @IEEE80211_CHAN_DISABLED: This channel is disabled.
- * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted
- *      on this channel.
- * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel.
+ * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes
+ *      sending probe requests or beaconing.
  * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
  * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
  *      is not permitted.
@@ -113,8 +112,8 @@ enum ieee80211_band {
  */
 enum ieee80211_channel_flags {
         IEEE80211_CHAN_DISABLED         = 1<<0,
-        IEEE80211_CHAN_PASSIVE_SCAN     = 1<<1,
-        IEEE80211_CHAN_NO_IBSS          = 1<<2,
+        IEEE80211_CHAN_NO_IR            = 1<<1,
+        /* hole at 1<<2 */
         IEEE80211_CHAN_RADAR            = 1<<3,
         IEEE80211_CHAN_NO_HT40PLUS      = 1<<4,
         IEEE80211_CHAN_NO_HT40MINUS     = 1<<5,
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 3d8325bb50cd..7e25164adfe9 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2231,10 +2231,9 @@ enum nl80211_band_attr {
  * @NL80211_FREQUENCY_ATTR_FREQ: Frequency in MHz
  * @NL80211_FREQUENCY_ATTR_DISABLED: Channel is disabled in current
  *      regulatory domain.
- * @NL80211_FREQUENCY_ATTR_PASSIVE_SCAN: Only passive scanning is
- *      permitted on this channel in current regulatory domain.
- * @NL80211_FREQUENCY_ATTR_NO_IBSS: IBSS networks are not permitted
- *      on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_NO_IR: no mechanisms that initiate radiation
+ *      are permitted on this channel, this includes sending probe
+ *      requests, or modes of operation that require beaconing.
  * @NL80211_FREQUENCY_ATTR_RADAR: Radar detection is mandatory
  *      on this channel in current regulatory domain.
  * @NL80211_FREQUENCY_ATTR_MAX_TX_POWER: Maximum transmission power in mBm
@@ -2261,8 +2260,8 @@ enum nl80211_frequency_attr {
         __NL80211_FREQUENCY_ATTR_INVALID,
         NL80211_FREQUENCY_ATTR_FREQ,
         NL80211_FREQUENCY_ATTR_DISABLED,
-        NL80211_FREQUENCY_ATTR_PASSIVE_SCAN,
-        NL80211_FREQUENCY_ATTR_NO_IBSS,
+        NL80211_FREQUENCY_ATTR_NO_IR,
+        __NL80211_FREQUENCY_ATTR_NO_IBSS,
         NL80211_FREQUENCY_ATTR_RADAR,
         NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
         NL80211_FREQUENCY_ATTR_DFS_STATE,
@@ -2278,6 +2277,9 @@ enum nl80211_frequency_attr {
 };
 
 #define NL80211_FREQUENCY_ATTR_MAX_TX_POWER NL80211_FREQUENCY_ATTR_MAX_TX_POWER
+#define NL80211_FREQUENCY_ATTR_PASSIVE_SCAN     NL80211_FREQUENCY_ATTR_NO_IR
+#define NL80211_FREQUENCY_ATTR_NO_IBSS          NL80211_FREQUENCY_ATTR_NO_IR
+#define NL80211_FREQUENCY_ATTR_NO_IR            NL80211_FREQUENCY_ATTR_NO_IR
 
 /**
  * enum nl80211_bitrate_attr - bitrate attributes
@@ -2420,8 +2422,9 @@ enum nl80211_sched_scan_match_attr {
  * @NL80211_RRF_DFS: DFS support is required to be used
  * @NL80211_RRF_PTP_ONLY: this is only for Point To Point links
  * @NL80211_RRF_PTMP_ONLY: this is only for Point To Multi Point links
- * @NL80211_RRF_PASSIVE_SCAN: passive scan is required
- * @NL80211_RRF_NO_IBSS: no IBSS is allowed
+ * @NL80211_RRF_NO_IR: no mechanisms that initiate radiation are allowed,
+ *      this includes probe requests or modes of operation that require
+ *      beaconing.
  */
 enum nl80211_reg_rule_flags {
         NL80211_RRF_NO_OFDM             = 1<<0,
@@ -2431,10 +2434,17 @@ enum nl80211_reg_rule_flags {
         NL80211_RRF_DFS                 = 1<<4,
         NL80211_RRF_PTP_ONLY            = 1<<5,
         NL80211_RRF_PTMP_ONLY           = 1<<6,
-        NL80211_RRF_PASSIVE_SCAN        = 1<<7,
-        NL80211_RRF_NO_IBSS             = 1<<8,
+        NL80211_RRF_NO_IR               = 1<<7,
+        __NL80211_RRF_NO_IBSS           = 1<<8,
 };
 
+#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
+
+/* For backport compatibility with older userspace */
+#define NL80211_RRF_NO_IR_ALL           (NL80211_RRF_NO_IR | __NL80211_RRF_NO_IBSS)
+
 /**
  * enum nl80211_dfs_regions - regulatory DFS regions
  *