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From:   gregory.greenman@intel.com
To:     johannes@sipsolutions.net
Cc:     linux-wireless@vger.kernel.org,
        Johannes Berg <johannes.berg@intel.com>,
        Gregory Greenman <gregory.greenman@intel.com>
Subject: [PATCH 05/15] wifi: iwlwifi: mvm: request limiting to 8 MSDUs per A-MSDU
Date:   Thu, 13 Apr 2023 21:40:25 +0300
Message-Id: <20230413213309.e6c518f2724f.I15c13d13b38289edbcd64f67d57cf18f6026457a@changeid>
In-Reply-To: <20230413184035.1140892-1-gregory.greenman@intel.com>
References: <20230413184035.1140892-1-gregory.greenman@intel.com>
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From: Johannes Berg <johannes.berg@intel.com>

Due to hardware limitations when splitting up A-MSDUs, it
cannot handle an arbitrary number of MSDUs per A-MSDU. Set
the bits to ask transmitters to send only 8 MSDUs in one
A-MSDU.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index fc15636beec0..ac5c4799fa7e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -227,14 +227,18 @@ int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 static const u8 he_if_types_ext_capa_sta[] = {
 	 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
 	 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
-	 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
+	 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF |
+	       WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB,
+	 [8] = WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB,
 };
 
 static const u8 tm_if_types_ext_capa_sta[] = {
 	 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
 	 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT |
 	       WLAN_EXT_CAPA3_TIMING_MEASUREMENT_SUPPORT,
-	 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
+	 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF |
+	       WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB,
+	 [8] = WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB,
 	 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT,
 };
 
-- 
2.38.1