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From:   Aloka Dixit <quic_alokad@quicinc.com>
To:     <johannes@sipsolutions.net>, <linux-wireless@vger.kernel.org>
CC:     Aloka Dixit <quic_alokad@quicinc.com>
Subject: [PATCH v2 4/4] mac80211: reset puncturing bitmap during width downgrade
Date:   Wed, 23 Mar 2022 12:16:40 -0700
Message-ID: <20220323191640.31230-4-quic_alokad@quicinc.com>
In-Reply-To: <20220323191640.31230-1-quic_alokad@quicinc.com>
References: <20220323191640.31230-1-quic_alokad@quicinc.com>
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Set the RU puncturing bitmap to 0 if for any reason bandwidth
is downgraded to less than 80 Mhz.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
---
 net/mac80211/util.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 682a164f795a..0dd7e8dae5a9 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -4135,6 +4135,13 @@ u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
 		break;
 	}
 
+	if (c->width != NL80211_CHAN_WIDTH_320 &&
+	    c->width != NL80211_CHAN_WIDTH_160 &&
+	    c->width != NL80211_CHAN_WIDTH_80) {
+		c->ru_punct_bitmap = 0;
+		c->ru_punct_bitmap_supp_he = 0;
+	}
+
 	WARN_ON_ONCE(!cfg80211_chandef_valid(c));
 
 	return ret;
-- 
2.31.1