ath11k: Designating channel frequency when sending management frames

In case of Passpoint, the WLAN interface may be requested to
remain on a specific channel and then to send some management
frames on that channel. Now chanfreq of wmi_mgmt_send_cmd is set
as 0, as a result firmware may choose a default but wrong channel.
Fix it by assigning chanfreq field with the designated channel.

This change only applies to WCN6855 and QCA6390, other chips are
not affected.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1

Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220506013614.1580274-4-quic_bqiang@quicinc.com

diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index 6b65354..26f7bdd 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -110,6 +110,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 0,
                .ce_window_idx = 0,
                .fixed_fw_mem = false,
+               .support_off_channel_tx = false,
        },
        {
                .hw_rev = ATH11K_HW_IPQ6018_HW10,
@@ -185,6 +186,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 0,
                .ce_window_idx = 0,
                .fixed_fw_mem = false,
+               .support_off_channel_tx = false,
        },
        {
                .name = "qca6390 hw2.0",
@@ -259,6 +261,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 0,
                .ce_window_idx = 0,
                .fixed_fw_mem = false,
+               .support_off_channel_tx = true,
        },
        {
                .name = "qcn9074 hw1.0",
@@ -333,6 +336,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 3,
                .ce_window_idx = 2,
                .fixed_fw_mem = false,
+               .support_off_channel_tx = false,
        },
        {
                .name = "wcn6855 hw2.0",
@@ -407,6 +411,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 0,
                .ce_window_idx = 0,
                .fixed_fw_mem = false,
+               .support_off_channel_tx = true,
        },
        {
                .name = "wcn6855 hw2.1",
@@ -480,6 +485,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 0,
                .ce_window_idx = 0,
                .fixed_fw_mem = false,
+               .support_off_channel_tx = true,
        },
        {
                .name = "wcn6750 hw1.0",
@@ -553,6 +559,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .dp_window_idx = 1,
                .ce_window_idx = 2,
                .fixed_fw_mem = true,
+               .support_off_channel_tx = false,
        },
 };
 

diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
index 3a2abde..77dc5c8 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/hw.h
+++ b/drivers/net/wireless/ath/ath11k/hw.h
@@ -204,6 +204,7 @@ struct ath11k_hw_params {
        u8 dp_window_idx;
        u8 ce_window_idx;
        bool fixed_fw_mem;
+       bool support_off_channel_tx;
 };
 
 struct ath11k_hw_ops {

diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index 0eb2e5e..84d1c70 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -625,10 +625,25 @@ struct sk_buff *ath11k_wmi_alloc_skb(struct ath11k_wmi_base *wmi_sc, u32 len)
        return skb;
 }
 
+static u32 ath11k_wmi_mgmt_get_freq(struct ath11k *ar,
+                                   struct ieee80211_tx_info *info)
+{
+       struct ath11k_base *ab = ar->ab;
+       u32 freq = 0;
+
+       if (ab->hw_params.support_off_channel_tx &&
+           ar->scan.is_roc &&
+           (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN))
+               freq = ar->scan.roc_freq;
+
+       return freq;
+}
+
 int ath11k_wmi_mgmt_send(struct ath11k *ar, u32 vdev_id, u32 buf_id,
                         struct sk_buff *frame)
 {
        struct ath11k_pdev_wmi *wmi = ar->wmi;
+       struct ieee80211_tx_info *info = IEEE80211_SKB_CB(frame);
        struct wmi_mgmt_send_cmd *cmd;
        struct wmi_tlv *frame_tlv;
        struct sk_buff *skb;
@@ -649,7 +664,7 @@ int ath11k_wmi_mgmt_send(struct ath11k *ar, u32 vdev_id, u32 buf_id,
                          FIELD_PREP(WMI_TLV_LEN, sizeof(*cmd) - TLV_HDR_SIZE);
        cmd->vdev_id = vdev_id;
        cmd->desc_id = buf_id;
-       cmd->chanfreq = 0;
+       cmd->chanfreq = ath11k_wmi_mgmt_get_freq(ar, info);
        cmd->paddr_lo = lower_32_bits(ATH11K_SKB_CB(frame)->paddr);
        cmd->paddr_hi = upper_32_bits(ATH11K_SKB_CB(frame)->paddr);
        cmd->frame_len = frame->len;