qcacmn: [CRYPTO] Add apis to access key information

APIs to retrieve following based on cipher type -
1. Header length
2. Trailer length
3. Miclen

Change-Id: Ia9c3a8d6a1459e637af80fcf73077e2d6b5f310c
CRs-Fixed: 2233228

umac/cmn_services/crypto/inc/wlan_crypto_global_api.h

@@ -535,6 +535,37 @@ uint8_t wlan_crypto_get_peer_fils_aead(struct wlan_objmgr_peer *peer);
  */
 void wlan_crypto_set_peer_fils_aead(
 			struct wlan_objmgr_peer *peer, uint8_t value);
+
+/**
+ * wlan_crypto_get_key_header - get header length
+ * @key: key
+ *
+ * This function gets header length based on keytype
+ *
+ * Return: header length
+ */
+uint8_t wlan_crypto_get_key_header(struct wlan_crypto_key *key);
+
+/**
+ * wlan_crypto_get_key_trailer - get cipher trailer length
+ * @key: key
+ *
+ * This function gets cipher trailer length based on keytype
+ *
+ * Return: cipher trailer length
+ */
+uint8_t wlan_crypto_get_key_trailer(struct wlan_crypto_key *key);
+
+/**
+ * wlan_crypto_get_key_miclen - get cipher miclen length
+ * @key: key
+ *
+ * This function gets cipher miclen length based on keytype
+ *
+ * Return: cipher miclen length
+ */
+uint8_t wlan_crypto_get_key_miclen(struct wlan_crypto_key *key);
+
 /**
  * wlan_crypto_get_keyid - get keyid from frame
  * @data: frame

umac/cmn_services/crypto/src/wlan_crypto_global_api.c

@@ -1180,7 +1180,7 @@ QDF_STATUS wlan_crypto_decap(struct wlan_objmgr_vdev *vdev,
 		hdrlen = ieee80211_hdrspace(wlan_vdev_get_pdev(vdev),
 					    (uint8_t *)qdf_nbuf_data(wbuf));
 
-	keyid = wlan_crypto_get_keyid((uint8_t *)qdf_nbuf_data(wbuf));
+	keyid = wlan_crypto_get_keyid((uint8_t *)qdf_nbuf_data(wbuf), hdrlen);
 
 	if (keyid >= WLAN_CRYPTO_MAXKEYIDX)
 		return QDF_STATUS_E_INVAL;
@@ -3112,6 +3112,69 @@ wlan_crypto_set_peer_fils_aead(struct wlan_objmgr_peer *peer, uint8_t value)
 	crypto_priv->fils_aead_set = value;
 }
 
+/**
+ * wlan_crypto_get_key_header - get header length
+ * @key: key
+ *
+ * This function gets header length based on keytype
+ *
+ * Return: header length
+ */
+uint8_t wlan_crypto_get_key_header(struct wlan_crypto_key *key)
+{
+	struct wlan_crypto_cipher *cipher_table;
+
+	cipher_table = (struct wlan_crypto_cipher *)key->cipher_table;
+	if (cipher_table)
+		return cipher_table->header;
+	else
+		return 0;
+}
+
+qdf_export_symbol(wlan_crypto_get_key_header);
+
+/**
+ * wlan_crypto_get_key_trailer - get cipher trailer length
+ * @key: key
+ *
+ * This function gets cipher trailer length based on keytype
+ *
+ * Return: cipher trailer length
+ */
+uint8_t wlan_crypto_get_key_trailer(struct wlan_crypto_key *key)
+{
+	struct wlan_crypto_cipher *cipher_table;
+
+	cipher_table = (struct wlan_crypto_cipher *)key->cipher_table;
+	if (cipher_table)
+		return cipher_table->trailer;
+	else
+		return 0;
+}
+
+qdf_export_symbol(wlan_crypto_get_key_trailer);
+
+/**
+ * wlan_crypto_get_key_miclen - get cipher miclen length
+ * @key: key
+ *
+ * This function gets cipher miclen length based on keytype
+ *
+ * Return: cipher miclen length
+ */
+uint8_t wlan_crypto_get_key_miclen(struct wlan_crypto_key *key)
+{
+	struct wlan_crypto_cipher *cipher_table;
+
+	cipher_table = (struct wlan_crypto_cipher *)key->cipher_table;
+	if (cipher_table)
+		return cipher_table->miclen;
+	else
+		return 0;
+}
+
+qdf_export_symbol(wlan_crypto_get_key_miclen);
+
 /**
  * wlan_crypto_get_keyid - get keyid from frame
  * @data: frame