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From: Luca Coelho <luca@coelho.fi>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH 08/11] mac80211: ignore country element TX power on 6 GHz
Date: Sun,  6 Dec 2020 14:54:47 +0200	[thread overview]
Message-ID: <iwlwifi.20201206145305.9abf9f6b4f88.Icb6e52af586edcc74f1f0360e8f6fc9ef2bfe8f5@changeid> (raw)
In-Reply-To: <20201206125450.564941-1-luca@coelho.fi>

From: Johannes Berg <johannes.berg@intel.com>

Updates to the 802.11ax draft are coming that deprecate the
country element in favour of the transmit power envelope
element, and make the maximum transmit power level field in
the triplets reserved, so if we parse them we'd use 0 dBm
transmit power.

Follow suit and completely ignore the element on 6 GHz for
purposes of determining TX power.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 net/mac80211/mlme.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 1c9cc65bccba..824dbba62794 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1560,9 +1560,17 @@ ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
 		chan_increment = 1;
 		break;
 	case NL80211_BAND_5GHZ:
-	case NL80211_BAND_6GHZ:
 		chan_increment = 4;
 		break;
+	case NL80211_BAND_6GHZ:
+		/*
+		 * In the 6 GHz band, the "maximum transmit power level"
+		 * field in the triplets is reserved, and thus will be
+		 * zero and we shouldn't use it to control TX power.
+		 * The actual TX power will be given in the transmit
+		 * power envelope element instead.
+		 */
+		return false;
 	}
 
 	/* find channel */
-- 
2.29.2


  parent reply	other threads:[~2020-12-06 12:55 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-06 12:54 [PATCH 00/11] cfg80211/mac80211 patches from our internal tree 2020-12-06 Luca Coelho
2020-12-06 12:54 ` [PATCH 01/11] cfg80211: remove struct ieee80211_he_bss_color Luca Coelho
2020-12-06 12:54 ` [PATCH 02/11] mac80211: use struct assignment for he_obss_pd Luca Coelho
2020-12-06 12:54 ` [PATCH 03/11] cfg80211: support immediate reconnect request hint Luca Coelho
2020-12-06 12:54 ` [PATCH 04/11] mac80211: support driver-based disconnect with reconnect hint Luca Coelho
2020-12-06 12:54 ` [PATCH 05/11] mac80211: don't set set TDLS STA bandwidth wider than possible Luca Coelho
2020-12-06 12:54 ` [PATCH 06/11] mac80211: support Rx timestamp calculation for all preamble types Luca Coelho
2020-12-06 12:54 ` [PATCH 07/11] mac80211: use bitfield helpers for BA session action frames Luca Coelho
2020-12-06 12:54 ` Luca Coelho [this message]
2020-12-06 12:54 ` [PATCH 09/11] mac80211: Fix calculation of minimal channel width Luca Coelho
2020-12-06 12:54 ` [PATCH 10/11] mac80211: don't filter out beacons once we start CSA Luca Coelho
2020-12-06 12:54 ` [PATCH 11/11] mac80211: Update rate control on channel change Luca Coelho

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