net: mgmt: Central place for allocating layer specific codes

Instead of littering the source tree with hard to track
layer code definitions, have a central place where to register
the layer codes.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

include/zephyr/net/net_mgmt.h

@@ -76,6 +76,31 @@ struct net_if;
 
 /** @endcond */
 
+/** @brief Central place the definition of the layer codes (7 bit value) */
+enum net_mgmt_layer_code {
+	NET_MGMT_LAYER_CODE_UNKNOWN    = 0x00, /**< Unknown layer code, do not use */
+	NET_MGMT_LAYER_CODE_IFACE      = 0x01, /**< Network interface layer code */
+	NET_MGMT_LAYER_CODE_CONN       = 0x02, /**< Connectivity layer code */
+	NET_MGMT_LAYER_CODE_IPV4       = 0x03, /**< IPv4 layer code */
+	NET_MGMT_LAYER_CODE_IPV6       = 0x04, /**< IPv6 layer code */
+	NET_MGMT_LAYER_CODE_L4         = 0x05, /**< L4 layer code */
+	NET_MGMT_LAYER_CODE_COAP       = 0x06, /**< CoAP layer code */
+	NET_MGMT_LAYER_CODE_STATS      = 0x07, /**< Statistics layer code */
+	NET_MGMT_LAYER_CODE_HOSTAP     = 0x08, /**< Hostap (wpa_supplicant) layer code */
+	NET_MGMT_LAYER_CODE_ETHERNET   = 0x09, /**< Ethernet layer code */
+	NET_MGMT_LAYER_CODE_IEEE802514 = 0x0A, /**< IEEE 802.15.4 layer code */
+	NET_MGMT_LAYER_CODE_PPP        = 0x0B, /**< PPP layer code */
+	NET_MGMT_LAYER_CODE_VIRTUAL    = 0x0C, /**< Virtual network interface layer code */
+	NET_MGMT_LAYER_CODE_WIFI       = 0x0D, /**< Wi-Fi layer code */
+
+	/* Out of tree code can use the following userX layer codes */
+	NET_MGMT_LAYER_CODE_USER3      = 0x7C, /**< User layer code 3 */
+	NET_MGMT_LAYER_CODE_USER2      = 0x7D, /**< User layer code 2 */
+	NET_MGMT_LAYER_CODE_USER1      = 0x7E, /**< User layer code 1 */
+
+	/* Reserved layer code for future use */
+	NET_MGMT_LAYER_CODE_RESERVED   = 0x7F  /**< Reserved layer code for future use */
+};
 
 /**
  * @typedef net_mgmt_request_handler_t