[PATCH wireless 2/2] wifi: nxpwifi: add missing header to HOST_CMD_CFG_DATA

[Viktor Korsnes <viktor.korsnes@remarkable.no>]

nxpwifi_cmd_sta_cfg_data() writes the parsed calibration payload
directly at S_DS_GEN without prepending the 6-byte
host_cmd_ds_802_11_cfg_data header (action, type, data_len) expected by
the firmware for HOST_CMD_CFG_DATA (0x008f), matching upstream mwifiex
commit 9868c4ce9481 ("wifi: mwifiex: Fix RF calibration data download
from file").

Add struct host_cmd_ds_802_11_cfg_data to struct host_cmd_ds_command,
populate the header before the calibration payload, and include its size
in cmd->size.

Fixes: 73b01e57ed3e ("wifi: nxp: add nxpwifi driver for IW61x")
Assisted-by: GitHub-Copilot:Gemini-4-Argon
Signed-off-by: Viktor Korsnes <viktor.korsnes@remarkable.no>
---
Tested on i.MX8MM with IW611 (SDIO, FW 18.99.8.p136.0) using a 458-byte
calibration configuration file: verified via kprobes on
nxpwifi_ret_sta_cfg_data() that HOST_CMD_CFG_DATA (0x8f) succeeds
(result=0, action=1, type=0x2, data_len=458, size=472) and the firmware
parses and endian-converts all 113 32-bit calibration words from the file.

 drivers/net/wireless/nxp/nxpwifi/fw.h      | 10 ++++++++++
 drivers/net/wireless/nxp/nxpwifi/sta_cmd.c | 12 ++++++++----
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/nxp/nxpwifi/fw.h b/drivers/net/wireless/nxp/nxpwifi/fw.h
index 124728a72442..d4fe29faedea 100644
--- a/drivers/net/wireless/nxp/nxpwifi/fw.h
+++ b/drivers/net/wireless/nxp/nxpwifi/fw.h
@@ -2375,6 +2375,15 @@ struct host_cmd_twt_cfg {
 	u8 val[];
 } __packed;
 
+#define NXPWIFI_CFG_TYPE_CAL	0x2
+
+struct host_cmd_ds_802_11_cfg_data {
+	__le16 action;
+	__le16 type;
+	__le16 data_len;
+	u8 data[];
+} __packed;
+
 struct host_cmd_ds_command {
 	__le16 command;
 	__le16 size;
@@ -2382,6 +2391,7 @@ struct host_cmd_ds_command {
 	__le16 result;
 	union {
 		struct host_cmd_ds_get_hw_spec hw_spec;
+		struct host_cmd_ds_802_11_cfg_data cfg_data;
 		struct host_cmd_ds_mac_control mac_ctrl;
 		struct host_cmd_ds_802_11_mac_address mac_addr;
 		struct host_cmd_ds_mac_multicast_adr mc_addr;
diff --git a/drivers/net/wireless/nxp/nxpwifi/sta_cmd.c b/drivers/net/wireless/nxp/nxpwifi/sta_cmd.c
index f3cd5a51c438..a62ea7b9dc07 100644
--- a/drivers/net/wireless/nxp/nxpwifi/sta_cmd.c
+++ b/drivers/net/wireless/nxp/nxpwifi/sta_cmd.c
@@ -1421,24 +1421,28 @@ nxpwifi_cmd_sta_cfg_data(struct nxpwifi_private *priv,
 			 u16 cmd_action, u32 cmd_type)
 {
 	struct nxpwifi_adapter *adapter = priv->adapter;
+	struct host_cmd_ds_802_11_cfg_data *pcfg_data = &cmd->params.cfg_data;
 	u32 len;
-	u8 *data = (u8 *)cmd + S_DS_GEN;
 
 	if (!adapter->cal_data || !adapter->cal_data->data ||
 	    !adapter->cal_data->size)
 		return -EINVAL;
 
 	len = nxpwifi_parse_cal_cfg((u8 *)adapter->cal_data->data,
-				    adapter->cal_data->size, data,
-				    NXPWIFI_SIZE_OF_CMD_BUFFER - S_DS_GEN);
+				    adapter->cal_data->size, pcfg_data->data,
+				    NXPWIFI_SIZE_OF_CMD_BUFFER - S_DS_GEN -
+				    sizeof(*pcfg_data));
 	if (!len)
 		return -EINVAL;
 
+	pcfg_data->action = cpu_to_le16(cmd_action);
+	pcfg_data->type = cpu_to_le16(NXPWIFI_CFG_TYPE_CAL);
+	pcfg_data->data_len = cpu_to_le16(len);
 	nxpwifi_dbg(adapter, INFO,
 		    "download cfg_data from config file\n");
 
 	cmd->command = cpu_to_le16(HOST_CMD_CFG_DATA);
-	cmd->size = cpu_to_le16(S_DS_GEN + len);
+	cmd->size = cpu_to_le16(S_DS_GEN + sizeof(*pcfg_data) + len);
 
 	return 0;
 }
-- 
2.53.0