[PATCH 14/14] wifi: mac80211: expose ieee80211_chan_width_to_rx_bw() to drivers

[Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>]

From: Johannes Berg <johannes.berg@xxxxxxxxx>

Drivers might need to also do this calculation, no point in
them duplicating the code. Since it's so simple, just make
it an inline.

Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
---
 include/net/mac80211.h     | 27 +++++++++++++++++++++++++++
 net/mac80211/ieee80211_i.h |  2 --
 net/mac80211/vht.c         | 22 ----------------------
 3 files changed, 27 insertions(+), 24 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index af70ad504cf2..7062638cec2f 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -7704,6 +7704,33 @@ void ieee80211_set_active_links_async(struct ieee80211_vif *vif,
  */
 void ieee80211_send_teardown_neg_ttlm(struct ieee80211_vif *vif);
 
+/**
+ * ieee80211_chan_width_to_rx_bw - convert channel width to STA RX bandwidth
+ * @width: the channel width value to convert
+ * Return: the STA RX bandwidth value for the channel width
+ */
+static inline enum ieee80211_sta_rx_bandwidth
+ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width)
+{
+	switch (width) {
+	default:
+		WARN_ON_ONCE(1);
+		fallthrough;
+	case NL80211_CHAN_WIDTH_20_NOHT:
+	case NL80211_CHAN_WIDTH_20:
+		return IEEE80211_STA_RX_BW_20;
+	case NL80211_CHAN_WIDTH_40:
+		return IEEE80211_STA_RX_BW_40;
+	case NL80211_CHAN_WIDTH_80:
+		return IEEE80211_STA_RX_BW_80;
+	case NL80211_CHAN_WIDTH_160:
+	case NL80211_CHAN_WIDTH_80P80:
+		return IEEE80211_STA_RX_BW_160;
+	case NL80211_CHAN_WIDTH_320:
+		return IEEE80211_STA_RX_BW_320;
+	}
+}
+
 /* for older drivers - let's not document these ... */
 int ieee80211_emulate_add_chanctx(struct ieee80211_hw *hw,
 				  struct ieee80211_chanctx_conf *ctx);
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index edb2d55a5126..4248e299a331 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2194,8 +2194,6 @@ ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta)
 	return _ieee80211_sta_cur_vht_bw(link_sta, NULL);
 }
 void ieee80211_sta_init_nss(struct link_sta_info *link_sta);
-enum ieee80211_sta_rx_bandwidth
-ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
 enum nl80211_chan_width
 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 7c878fb69f9a..2432d3bee7ce 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -479,28 +479,6 @@ ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *link_sta)
 	}
 }
 
-enum ieee80211_sta_rx_bandwidth
-ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width)
-{
-	switch (width) {
-	case NL80211_CHAN_WIDTH_20_NOHT:
-	case NL80211_CHAN_WIDTH_20:
-		return IEEE80211_STA_RX_BW_20;
-	case NL80211_CHAN_WIDTH_40:
-		return IEEE80211_STA_RX_BW_40;
-	case NL80211_CHAN_WIDTH_80:
-		return IEEE80211_STA_RX_BW_80;
-	case NL80211_CHAN_WIDTH_160:
-	case NL80211_CHAN_WIDTH_80P80:
-		return IEEE80211_STA_RX_BW_160;
-	case NL80211_CHAN_WIDTH_320:
-		return IEEE80211_STA_RX_BW_320;
-	default:
-		WARN_ON_ONCE(1);
-		return IEEE80211_STA_RX_BW_20;
-	}
-}
-
 /* FIXME: rename/move - this deals with everything not just VHT */
 enum ieee80211_sta_rx_bandwidth
 _ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta,
-- 
2.34.1