mwifiex: parse API version from FW

This patch adds support to parse FW API version TLVs.
Currently only API version for key_material is supported.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 60 insertions, 1 deletions

diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c
index 7711b11a9812..21544602043c 100644
--- a/drivers/net/wireless/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/mwifiex/cmdevt.c
@@ -1455,7 +1455,10 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 {
         struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
         struct mwifiex_adapter *adapter = priv->adapter;
-        int i;
+        struct mwifiex_ie_types_header *tlv;
+        struct hw_spec_fw_api_rev *api_rev;
+        u16 resp_size, api_id;
+        int i, left_len, parsed_len = 0;
 
         adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info);
 
@@ -1513,6 +1516,46 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
                 adapter->is_hw_11ac_capable = false;
         }
 
+        resp_size = le16_to_cpu(resp->size) - S_DS_GEN;
+        if (resp_size > sizeof(struct host_cmd_ds_get_hw_spec)) {
+                /* we have variable HW SPEC information */
+                left_len = resp_size - sizeof(struct host_cmd_ds_get_hw_spec);
+                while (left_len > sizeof(struct mwifiex_ie_types_header)) {
+                        tlv = (void *)&hw_spec->tlvs + parsed_len;
+                        switch (le16_to_cpu(tlv->type)) {
+                        case TLV_TYPE_FW_API_REV:
+                                api_rev = (struct hw_spec_fw_api_rev *)tlv;
+                                api_id = le16_to_cpu(api_rev->api_id);
+                                switch (api_id) {
+                                case KEY_API_VER_ID:
+                                        adapter->fw_key_api_major_ver =
+                                                        api_rev->major_ver;
+                                        adapter->fw_key_api_minor_ver =
+                                                        api_rev->minor_ver;
+                                        dev_dbg(adapter->dev,
+                                                "fw_key_api v%d.%d\n",
+                                                adapter->fw_key_api_major_ver,
+                                                adapter->fw_key_api_minor_ver);
+                                        break;
+                                default:
+                                        dev_warn(adapter->dev,
+                                                 "Unknown FW api_id: %d\n",
+                                                 api_id);
+                                        break;
+                                }
+                                break;
+                        default:
+                                dev_warn(adapter->dev,
+                                         "Unknown GET_HW_SPEC TLV type: %#x\n",
+                                         le16_to_cpu(tlv->type));
+                                break;
+                        }
+                        parsed_len += le16_to_cpu(tlv->len) +
+                                      sizeof(struct mwifiex_ie_types_header);
+                        left_len -= parsed_len;
+                }
+        }
+
         dev_dbg(adapter->dev, "info: GET_HW_SPEC: fw_release_number- %#x\n",
                 adapter->fw_release_number);
         dev_dbg(adapter->dev, "info: GET_HW_SPEC: permanent addr: %pM\n",
diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h
index 2344abdeaf6d..5808f238f1cd 100644
--- a/drivers/net/wireless/mwifiex/fw.h
+++ b/drivers/net/wireless/mwifiex/fw.h
@@ -159,6 +159,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define TLV_TYPE_PWK_CIPHER         (PROPRIETARY_TLV_BASE_ID + 145)
 #define TLV_TYPE_GWK_CIPHER         (PROPRIETARY_TLV_BASE_ID + 146)
 #define TLV_TYPE_COALESCE_RULE      (PROPRIETARY_TLV_BASE_ID + 154)
+#define TLV_TYPE_FW_API_REV         (PROPRIETARY_TLV_BASE_ID + 199)
 
 #define MWIFIEX_TX_DATA_BUF_SIZE_2K        2048
 
@@ -751,6 +752,17 @@ struct host_cmd_ds_802_11_ps_mode_enh {
         } params;
 } __packed;
 
+enum FW_API_VER_ID {
+        KEY_API_VER_ID = 1,
+};
+
+struct hw_spec_fw_api_rev {
+        struct mwifiex_ie_types_header header;
+        __le16 api_id;
+        u8 major_ver;
+        u8 minor_ver;
+} __packed;
+
 struct host_cmd_ds_get_hw_spec {
         __le16 hw_if_version;
         __le16 version;
@@ -772,6 +784,7 @@ struct host_cmd_ds_get_hw_spec {
         __le32 reserved_6;
         __le32 dot_11ac_dev_cap;
         __le32 dot_11ac_mcs_support;
+        u8 tlvs[0];
 } __packed;
 
 struct host_cmd_ds_802_11_rssi_info {
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index 9dc8059778a0..a4cd2cb066ed 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -283,6 +283,8 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
         adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
         adapter->empty_tx_q_cnt = 0;
         adapter->ext_scan = true;
+        adapter->fw_key_api_major_ver = 0;
+        adapter->fw_key_api_minor_ver = 0;
 }
 
 /*
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 82754ed94a8a..de115fa745cb 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -801,6 +801,7 @@ struct mwifiex_adapter {
         atomic_t pending_bridged_pkts;
         struct semaphore *card_sem;
         bool ext_scan;
+        u8 fw_key_api_major_ver, fw_key_api_minor_ver;
 };
 
 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);