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[2003:c5:6f18:a600:880d:3dff:fede:fb04]) by smtp.googlemail.com with ESMTPSA id q3-20020a1ce903000000b003a61306d79dsm9398431wmc.41.2022.08.29.07.41.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Aug 2022 07:41:57 -0700 (PDT) From: Jonas Jelonek To: linux-wireless@vger.kernel.org Cc: johannes@sipsolutions.net, nbd@nbd.name, Jonas Jelonek , Thomas Huehn Subject: [RFC 0/4] mac80211: add TPC support in control path Date: Mon, 29 Aug 2022 16:41:43 +0200 Message-Id: <20220829144147.484787-1-jelonek.jonas@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Transmit power control (TPC) per packet hence per station can be used to manage interference and increase overall spatial reuse and therefore increases sum throughput in WiFi networks with multiple APs and STAs. Although several of today's wifi chips, e.g., from QCA and from Mediatek support fine-grained TPC per packet, the Linux mac80211 layer does not provide support this annotation nor control yet. This series proposes several changes to introduce TPC support in mac80211, in particular to annotate tx-power per packet/per mrr stage in the Tx control path. The patches include new nembers in the Tx control path structs, a modified tx-power level support annotation, hardware flags and an utility function for the convenient use of struct ieee80211_rate_status (introduced by 44fa75f207d8a106bc75e6230db61e961fdbf8a8) for tx-power status report in drivers. Compile-Tested: current wireless-next tree with all flags on Tested-on PCEngines APU with ath9k WiFi device on OpenWrt Linux Kernel 5.10.137 I tested the tx-power annotation with an implementation of TPC in ath9k (not included in this RFC) and small changes in minstrel_ht for debugfs access. Tx-power status report in ath9k required the proposed utility function in mac80211. Signed-off-by: Thomas Huehn Signed-off-by: Jonas Jelonek Jonas Jelonek (4): mac80211: modify tx-power level annotation mac80211: add tx-power annotation in control path mac80211: add hardware flags for TPC support mac80211: add utility function for tx_rate - rate_info conversion include/net/mac80211.h | 60 +++++++++++++++++++++++++++++++++++------- net/mac80211/debugfs.c | 2 ++ net/mac80211/util.c | 35 ++++++++++++++++++++++++ 3 files changed, 87 insertions(+), 10 deletions(-)