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Wed, 28 Oct 2026 22:52:57 -0700 (PDT) Received: from hostname.tail4fb79.ts.net ([2401:7400:c804:b668:65cc:625f:9c43:1e88]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-3ae6e2a703esm2523531a91.0.2026.10.28.22.52.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Oct 2026 22:52:57 -0700 (PDT) From: Ho Jie Feng To: Ping-Ke Shih Cc: linux-wireless@vger.kernel.org, Ho Jie Feng , linux-kernel@vger.kernel.org Subject: [PATCH 6/6] wifi: rtw88: 8812a, 8821a: respect peer A-MPDU size limits Date: Thu, 29 Oct 2026 13:52:08 +0800 Message-ID: <20261029055212.84711-7-hjf3108@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261029055212.84711-1-hjf3108@gmail.com> References: <20261029055212.84711-1-hjf3108@gmail.com> X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Honor the peer-advertised receive limit for transmitted A-MPDUs. Signed-off-by: Ho Jie Feng --- drivers/net/wireless/realtek/rtw88/rtw8812a.c | 9 ++++++++- drivers/net/wireless/realtek/rtw88/rtw8821a.c | 9 ++++++++- 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/rtw8812a.c b/drivers/net/wireless/realtek/rtw88/rtw8812a.c index d93c4776e0303..a3b5fae5608e0 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8812a.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8812a.c @@ -78,6 +78,13 @@ static void rtw8812a_cfg_ldo25(struct rtw_dev *rtwdev, bool enable) { } +static void rtw8812a_set_ampdu_factor(struct rtw_dev *rtwdev, u8 factor) +{ + factor = min_t(u8, factor, IEEE80211_VHT_MAX_AMPDU_128K); + + rtw_write32(rtwdev, REG_AMPDU_MAX_LENGTH, (8192 << factor) - 1); +} + static void rtw8812a_do_lck(struct rtw_dev *rtwdev) { u32 cont_tx, lc_cal, i; @@ -926,7 +933,7 @@ static const struct rtw_chip_ops rtw8812a_ops = { .set_tx_power_index = rtw88xxa_set_tx_power_index, .cfg_ldo25 = rtw8812a_cfg_ldo25, .efuse_grant = rtw88xxa_efuse_grant, - .set_ampdu_factor = NULL, + .set_ampdu_factor = rtw8812a_set_ampdu_factor, .false_alarm_statistics = rtw88xxa_false_alarm_statistics, .phy_calibration = rtw8812a_phy_calibration, .cck_pd_set = rtw_phy_cck_pd_set, diff --git a/drivers/net/wireless/realtek/rtw88/rtw8821a.c b/drivers/net/wireless/realtek/rtw88/rtw8821a.c index f7391f6aa3039..f597edec290f6 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8821a.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8821a.c @@ -49,6 +49,13 @@ static void rtw8821a_cfg_ldo25(struct rtw_dev *rtwdev, bool enable) { } +static void rtw8821a_set_ampdu_factor(struct rtw_dev *rtwdev, u8 factor) +{ + factor = min_t(u8, factor, IEEE80211_HT_MAX_AMPDU_64K); + + rtw_write32(rtwdev, REG_AMPDU_MAX_LENGTH, (8192 << factor) - 1); +} + #define CAL_NUM_8821A 3 #define MACBB_REG_NUM_8821A 8 #define AFE_REG_NUM_8821A 4 @@ -872,7 +879,7 @@ static const struct rtw_chip_ops rtw8821a_ops = { .set_tx_power_index = rtw88xxa_set_tx_power_index, .cfg_ldo25 = rtw8821a_cfg_ldo25, .efuse_grant = rtw88xxa_efuse_grant, - .set_ampdu_factor = NULL, + .set_ampdu_factor = rtw8821a_set_ampdu_factor, .false_alarm_statistics = rtw88xxa_false_alarm_statistics, .phy_calibration = rtw8821a_phy_calibration, .cck_pd_set = rtw_phy_cck_pd_set, -- 2.55.0