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>

6 files changed, 25 insertions, 37 deletions

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 9b8cc877eb19..344966496b70 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -467,8 +467,7 @@ bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
 
         res = cfg80211_chandef_usable(wiphy, chandef,
                                       IEEE80211_CHAN_DISABLED |
-                                      IEEE80211_CHAN_PASSIVE_SCAN |
-                                      IEEE80211_CHAN_NO_IBSS |
+                                      IEEE80211_CHAN_NO_IR |
                                       IEEE80211_CHAN_RADAR);
 
         trace_cfg80211_return_bool(res);
diff --git a/net/wireless/genregdb.awk b/net/wireless/genregdb.awk
index 42ed274e81f4..c808619ac9c6 100644
--- a/net/wireless/genregdb.awk
+++ b/net/wireless/genregdb.awk
@@ -107,10 +107,13 @@ active && /^[ \t]*\(/ {
                 } else if (flagarray[arg] == "PTMP-ONLY") {
                         flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
                 } else if (flagarray[arg] == "PASSIVE-SCAN") {
-                        flags = flags "\n\t\t\tNL80211_RRF_PASSIVE_SCAN | "
+                        flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
                 } else if (flagarray[arg] == "NO-IBSS") {
-                        flags = flags "\n\t\t\tNL80211_RRF_NO_IBSS | "
+                        flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
+                } else if (flagarray[arg] == "NO-IR") {
+                        flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
                 }
+
         }
         flags = flags "0"
         printf "\t\tREG_RULE(%d, %d, %d, %d, %d, %s),\n", start, end, bw, gain, power, flags
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 9d797df56649..f79105712949 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -274,7 +274,7 @@ int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 
                         for (i = 0; i < sband->n_channels; i++) {
                                 chan = &sband->channels[i];
-                                if (chan->flags & IEEE80211_CHAN_NO_IBSS)
+                                if (chan->flags & IEEE80211_CHAN_NO_IR)
                                         continue;
                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
                                         continue;
@@ -345,7 +345,7 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
                 chan = ieee80211_get_channel(wdev->wiphy, freq);
                 if (!chan)
                         return -EINVAL;
-                if (chan->flags & IEEE80211_CHAN_NO_IBSS ||
+                if (chan->flags & IEEE80211_CHAN_NO_IR ||
                     chan->flags & IEEE80211_CHAN_DISABLED)
                         return -EINVAL;
         }
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 0553fd4d85ae..b0e1869de7de 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -141,8 +141,7 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
 
                         for (i = 0; i < sband->n_channels; i++) {
                                 chan = &sband->channels[i];
-                                if (chan->flags & (IEEE80211_CHAN_NO_IBSS |
-                                                   IEEE80211_CHAN_PASSIVE_SCAN |
+                                if (chan->flags & (IEEE80211_CHAN_NO_IR |
                                                    IEEE80211_CHAN_DISABLED |
                                                    IEEE80211_CHAN_RADAR))
                                         continue;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a7f4e7902104..41af3a0e9961 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -545,12 +545,12 @@ static int nl80211_msg_put_channel(struct sk_buff *msg,
         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
                 goto nla_put_failure;
-        if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
-            nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
-                goto nla_put_failure;
-        if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
-            nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
-                goto nla_put_failure;
+        if (chan->flags & IEEE80211_CHAN_NO_IR) {
+                if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
+                        goto nla_put_failure;
+                if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
+                        goto nla_put_failure;
+        }
         if (chan->flags & IEEE80211_CHAN_RADAR) {
                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
                         goto nla_put_failure;
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 7da67fd0b418..e4e3337ba296 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -163,35 +163,29 @@ static const struct ieee80211_regdomain world_regdom = {
                 REG_RULE(2412-10, 2462+10, 40, 6, 20, 0),
                 /* IEEE 802.11b/g, channels 12..13. */
                 REG_RULE(2467-10, 2472+10, 40, 6, 20,
-                        NL80211_RRF_PASSIVE_SCAN |
-                        NL80211_RRF_NO_IBSS),
+                        NL80211_RRF_NO_IR),
                 /* IEEE 802.11 channel 14 - Only JP enables
                  * this and for 802.11b only */
                 REG_RULE(2484-10, 2484+10, 20, 6, 20,
-                        NL80211_RRF_PASSIVE_SCAN |
-                        NL80211_RRF_NO_IBSS |
+                        NL80211_RRF_NO_IR |
                         NL80211_RRF_NO_OFDM),
                 /* IEEE 802.11a, channel 36..48 */
                 REG_RULE(5180-10, 5240+10, 160, 6, 20,
-                        NL80211_RRF_PASSIVE_SCAN |
-                        NL80211_RRF_NO_IBSS),
+                        NL80211_RRF_NO_IR),
 
                 /* IEEE 802.11a, channel 52..64 - DFS required */
                 REG_RULE(5260-10, 5320+10, 160, 6, 20,
-                        NL80211_RRF_PASSIVE_SCAN |
-                        NL80211_RRF_NO_IBSS |
+                        NL80211_RRF_NO_IR |
                         NL80211_RRF_DFS),
 
                 /* IEEE 802.11a, channel 100..144 - DFS required */
                 REG_RULE(5500-10, 5720+10, 160, 6, 20,
-                        NL80211_RRF_PASSIVE_SCAN |
-                        NL80211_RRF_NO_IBSS |
+                        NL80211_RRF_NO_IR |
                         NL80211_RRF_DFS),
 
                 /* IEEE 802.11a, channel 149..165 */
                 REG_RULE(5745-10, 5825+10, 80, 6, 20,
-                        NL80211_RRF_PASSIVE_SCAN |
-                        NL80211_RRF_NO_IBSS),
+                        NL80211_RRF_NO_IR),
 
                 /* IEEE 802.11ad (60gHz), channels 1..3 */
                 REG_RULE(56160+2160*1-1080, 56160+2160*3+1080, 2160, 0, 0, 0),
@@ -698,10 +692,8 @@ regdom_intersect(const struct ieee80211_regdomain *rd1,
 static u32 map_regdom_flags(u32 rd_flags)
 {
         u32 channel_flags = 0;
-        if (rd_flags & NL80211_RRF_PASSIVE_SCAN)
-                channel_flags |= IEEE80211_CHAN_PASSIVE_SCAN;
-        if (rd_flags & NL80211_RRF_NO_IBSS)
-                channel_flags |= IEEE80211_CHAN_NO_IBSS;
+        if (rd_flags & NL80211_RRF_NO_IR_ALL)
+                channel_flags |= IEEE80211_CHAN_NO_IR;
         if (rd_flags & NL80211_RRF_DFS)
                 channel_flags |= IEEE80211_CHAN_RADAR;
         if (rd_flags & NL80211_RRF_NO_OFDM)
@@ -1066,13 +1058,8 @@ static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
         chan_before.center_freq = chan->center_freq;
         chan_before.flags = chan->flags;
 
-        if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) {
-                chan->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
-                channel_changed = true;
-        }
-
-        if (chan->flags & IEEE80211_CHAN_NO_IBSS) {
-                chan->flags &= ~IEEE80211_CHAN_NO_IBSS;
+        if (chan->flags & IEEE80211_CHAN_NO_IR) {
+                chan->flags &= ~IEEE80211_CHAN_NO_IR;
                 channel_changed = true;
         }