[PATCH v3 3/6] wifi: nl80211: configure puncturing in NL80211_CMD_CHANNEL_SWITCH

[Aloka Dixit <quic_alokad@quicinc.com>]

Retrieve the puncturing bitmap during channel switch operation and
store it in struct cfg80211_csa_settings.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
---
 include/net/cfg80211.h | 5 +++++
 net/mac80211/cfg.c     | 5 ++---
 net/wireless/nl80211.c | 7 +++++++
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c25a558d50ea..7714a44d312e 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1372,6 +1372,10 @@ struct cfg80211_ap_settings {
  * @radar_required: whether radar detection is required on the new channel
  * @block_tx: whether transmissions should be blocked while changing
  * @count: number of beacons until switch
+ * @punct_bitmap: Preamble puncturing bitmap. Each bit represents a 20 MHz
+ *	channel with lowest bit corresponding to the lowest frequency. Bit set
+ *	to 1 indicates that the channel is punctured. Higher 16 bits are
+ *	currently unused.
  */
 struct cfg80211_csa_settings {
 	struct cfg80211_chan_def chandef;
@@ -1384,6 +1388,7 @@ struct cfg80211_csa_settings {
 	bool radar_required;
 	bool block_tx;
 	u8 count;
+	u32 punct_bitmap;
 };
 
 /**
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 185e218e8668..87aab0ba9353 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1297,9 +1297,8 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 	}
 
 	if (params->eht_cap) {
-		if (!ieee80211_valid_disable_subchannel_bitmap(
-							&params->punct_bitmap,
-							params->chandef.width))
+		if (!ieee80211_valid_disable_subchannel_bitmap(&params->punct_bitmap,
+							       params->chandef.width))
 			return -EINVAL;
 		link_conf->eht_puncturing = params->punct_bitmap;
 		changed |= BSS_CHANGED_EHT_PUNCTURING;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 351c4cc5ec92..efe841ba8865 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10078,6 +10078,13 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
 		params.block_tx = true;
 
+	if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
+		err = nl80211_parse_punct_bitmap(rdev, info,
+						 &params.punct_bitmap);
+		if (err)
+			goto free;
+	}
+
 	wdev_lock(wdev);
 	err = rdev_channel_switch(rdev, dev, &params);
 	wdev_unlock(wdev);
-- 
2.39.0