ath10k: add per target config of max_num_peers

This patch makes sure the value of max_num_peers matches
num_peers in hw_params (if set to a non zero value).

hw_params->num_peers is used in the TLV WMI init command.
If ar->max_num_peers is not set to the same value, there is a risk
that the user creates more peers than the maximum number of peers
supported by the device.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 12 insertions, 5 deletions

diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index e30dcb310bd6..cf3c47b8cb2d 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -2200,6 +2200,7 @@ static void ath10k_core_set_coverage_class_work(struct work_struct *work)
 static int ath10k_core_init_firmware_features(struct ath10k *ar)
 {
         struct ath10k_fw_file *fw_file = &ar->normal_mode_fw.fw_file;
+        int max_num_peers;
 
         if (test_bit(ATH10K_FW_FEATURE_WMI_10_2, fw_file->fw_features) &&
             !test_bit(ATH10K_FW_FEATURE_WMI_10X, fw_file->fw_features)) {
@@ -2279,7 +2280,7 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar)
 
         switch (fw_file->wmi_op_version) {
         case ATH10K_FW_WMI_OP_VERSION_MAIN:
-                ar->max_num_peers = TARGET_NUM_PEERS;
+                max_num_peers = TARGET_NUM_PEERS;
                 ar->max_num_stations = TARGET_NUM_STATIONS;
                 ar->max_num_vdevs = TARGET_NUM_VDEVS;
                 ar->htt.max_num_pending_tx = TARGET_NUM_MSDU_DESC;
@@ -2291,10 +2292,10 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar)
         case ATH10K_FW_WMI_OP_VERSION_10_2:
         case ATH10K_FW_WMI_OP_VERSION_10_2_4:
                 if (ath10k_peer_stats_enabled(ar)) {
-                        ar->max_num_peers = TARGET_10X_TX_STATS_NUM_PEERS;
+                        max_num_peers = TARGET_10X_TX_STATS_NUM_PEERS;
                         ar->max_num_stations = TARGET_10X_TX_STATS_NUM_STATIONS;
                 } else {
-                        ar->max_num_peers = TARGET_10X_NUM_PEERS;
+                        max_num_peers = TARGET_10X_NUM_PEERS;
                         ar->max_num_stations = TARGET_10X_NUM_STATIONS;
                 }
                 ar->max_num_vdevs = TARGET_10X_NUM_VDEVS;
@@ -2303,7 +2304,7 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar)
                 ar->max_spatial_stream = WMI_MAX_SPATIAL_STREAM;
                 break;
         case ATH10K_FW_WMI_OP_VERSION_TLV:
-                ar->max_num_peers = TARGET_TLV_NUM_PEERS;
+                max_num_peers = TARGET_TLV_NUM_PEERS;
                 ar->max_num_stations = TARGET_TLV_NUM_STATIONS;
                 ar->max_num_vdevs = TARGET_TLV_NUM_VDEVS;
                 ar->max_num_tdls_vdevs = TARGET_TLV_NUM_TDLS_VDEVS;
@@ -2315,7 +2316,7 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar)
                 ar->wmi.mgmt_max_num_pending_tx = TARGET_TLV_MGMT_NUM_MSDU_DESC;
                 break;
         case ATH10K_FW_WMI_OP_VERSION_10_4:
-                ar->max_num_peers = TARGET_10_4_NUM_PEERS;
+                max_num_peers = TARGET_10_4_NUM_PEERS;
                 ar->max_num_stations = TARGET_10_4_NUM_STATIONS;
                 ar->num_active_peers = TARGET_10_4_ACTIVE_PEERS;
                 ar->max_num_vdevs = TARGET_10_4_NUM_VDEVS;
@@ -2334,10 +2335,16 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar)
                 break;
         case ATH10K_FW_WMI_OP_VERSION_UNSET:
         case ATH10K_FW_WMI_OP_VERSION_MAX:
+        default:
                 WARN_ON(1);
                 return -EINVAL;
         }
 
+        if (ar->hw_params.num_peers)
+                ar->max_num_peers = ar->hw_params.num_peers;
+        else
+                ar->max_num_peers = max_num_peers;
+
         /* Backwards compatibility for firmwares without
          * ATH10K_FW_IE_HTT_OP_VERSION.
          */