wifi: cfg80211: get rid of gfp in cfg80211_bss_color_notify

Since cfg80211_bss_color_notify() is now always run in non-atomic
context, get rid of gfp_t flags in the routine signature and always use
GFP_KERNEL for netlink message allocation.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/c687724e7b53556f7a2d9cbe3d11cdcf065cb687.1675255390.git.lorenzo@kernel.orgSigned-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -8936,12 +8936,11 @@ void cfg80211_bss_flush(struct wiphy *wiphy);
 /**
  * cfg80211_bss_color_notify - notify about bss color event
  * @dev: network device
- * @gfp: allocation flags
  * @cmd: the actual event we want to notify
  * @count: the number of TBTTs until the color change happens
  * @color_bitmap: representations of the colors that the local BSS is aware of
  */
-int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
+int cfg80211_bss_color_notify(struct net_device *dev,
 			      enum nl80211_commands cmd, u8 count,
 			      u64 color_bitmap);
 
@@ -8952,10 +8951,9 @@ int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
  * @gfp: allocation flags
  */
 static inline int cfg80211_obss_color_collision_notify(struct net_device *dev,
-						       u64 color_bitmap, gfp_t gfp)
+						       u64 color_bitmap)
 {
-	return cfg80211_bss_color_notify(dev, gfp,
-					 NL80211_CMD_OBSS_COLOR_COLLISION,
+	return cfg80211_bss_color_notify(dev, NL80211_CMD_OBSS_COLOR_COLLISION,
 					 0, color_bitmap);
 }
 
@@ -8969,8 +8967,7 @@ static inline int cfg80211_obss_color_collision_notify(struct net_device *dev,
 static inline int cfg80211_color_change_started_notify(struct net_device *dev,
 						       u8 count)
 {
-	return cfg80211_bss_color_notify(dev, GFP_KERNEL,
-					 NL80211_CMD_COLOR_CHANGE_STARTED,
+	return cfg80211_bss_color_notify(dev, NL80211_CMD_COLOR_CHANGE_STARTED,
 					 count, 0);
 }
 
@@ -8982,8 +8979,7 @@ static inline int cfg80211_color_change_started_notify(struct net_device *dev,
  */
 static inline int cfg80211_color_change_aborted_notify(struct net_device *dev)
 {
-	return cfg80211_bss_color_notify(dev, GFP_KERNEL,
-					 NL80211_CMD_COLOR_CHANGE_ABORTED,
+	return cfg80211_bss_color_notify(dev, NL80211_CMD_COLOR_CHANGE_ABORTED,
 					 0, 0);
 }
 
@@ -8995,7 +8991,7 @@ static inline int cfg80211_color_change_aborted_notify(struct net_device *dev)
  */
 static inline int cfg80211_color_change_notify(struct net_device *dev)
 {
-	return cfg80211_bss_color_notify(dev, GFP_KERNEL,
+	return cfg80211_bss_color_notify(dev,
 					 NL80211_CMD_COLOR_CHANGE_COMPLETED,
 					 0, 0);
 }

net/mac80211/cfg.c

@@ -4678,8 +4678,7 @@ void ieee80211_color_collision_detection_work(struct work_struct *work)
 	struct ieee80211_sub_if_data *sdata = link->sdata;
 
 	sdata_lock(sdata);
-	cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap,
-					     GFP_KERNEL);
+	cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap);
 	sdata_unlock(sdata);
 }
 

net/wireless/nl80211.c

@@ -19174,7 +19174,7 @@ void cfg80211_ch_switch_started_notify(struct net_device *dev,
 }
 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
 
-int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
+int cfg80211_bss_color_notify(struct net_device *dev,
 			      enum nl80211_commands cmd, u8 count,
 			      u64 color_bitmap)
 {
@@ -19188,7 +19188,7 @@ int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
 
 	trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
 
-	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 	if (!msg)
 		return -ENOMEM;
 
@@ -19211,7 +19211,7 @@ int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
 	genlmsg_end(msg, hdr);
 
 	return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
-				       msg, 0, NL80211_MCGRP_MLME, gfp);
+				       msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
 
 nla_put_failure:
 	nlmsg_free(msg);