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From:   Jouni Malinen <jouni@codeaurora.org>
To:     Kalle Valo <kvalo@codeaurora.org>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
        Seevalamuthu Mariappan <seevalam@codeaurora.org>,
        Jouni Malinen <jouni@codeaurora.org>
Subject: [PATCH 05/12] ath11k: Add vdev start flag to disable hardware encryption
Date:   Thu, 22 Jul 2021 00:20:22 +0300
Message-Id: <20210721212029.142388-5-jouni@codeaurora.org>
In-Reply-To: <20210721212029.142388-1-jouni@codeaurora.org>
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From: Seevalamuthu Mariappan <seevalam@codeaurora.org>

Firmware blocks all data traffic until the key is plumbed. But, with
software encryption mode, key is never plumbed to firmware. Due to this,
a traffic failure in software encryption mode has been observed. Hence,
firmware has introduced a flag to differentiate software encryption
mode. This flag can be passed during vdev_start command.

Enable WMI_VDEV_START_HW_ENCRYPTION_DISABLED flag in vdev_start command
to notify firmware to disable hardware encryption for a vdev. This is set
if raw mode software encryption is enabled.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01421-QCAHKSWPL_SILICONZ-1

Signed-off-by: Seevalamuthu Mariappan <seevalam@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---
 drivers/net/wireless/ath/ath11k/wmi.c | 2 ++
 drivers/net/wireless/ath/ath11k/wmi.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index 43344e774a31..020b2b7ee3c8 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -884,6 +884,8 @@ int ath11k_wmi_vdev_start(struct ath11k *ar, struct wmi_vdev_start_req_arg *arg,
 	}
 
 	cmd->flags |= WMI_VDEV_START_LDPC_RX_ENABLED;
+	if (test_bit(ATH11K_FLAG_HW_CRYPTO_DISABLED, &ar->ab->dev_flags))
+		cmd->flags |= WMI_VDEV_START_HW_ENCRYPTION_DISABLED;
 
 	ptr = skb->data + sizeof(*cmd);
 	chan = ptr;
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 1fff74b2b476..16b3f48bb378 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -2577,6 +2577,7 @@ struct wmi_vdev_down_cmd {
 #define WMI_VDEV_START_HIDDEN_SSID  BIT(0)
 #define WMI_VDEV_START_PMF_ENABLED  BIT(1)
 #define WMI_VDEV_START_LDPC_RX_ENABLED BIT(3)
+#define WMI_VDEV_START_HW_ENCRYPTION_DISABLED BIT(4)
 
 struct wmi_ssid {
 	u32 ssid_len;
-- 
2.25.1