wifi: nxp: add dedicated P2P (WFD) net device for Wi-Fi Direct

Register a new Zephyr net_if instance for P2P interface

- Add NXP_WIFI_P2P_SUPPORT Kconfig; increase heap pool to 100 KB
- Defer wlan init via atomic counter until all net_if callbacks fire
- Add nxp_wifi_p2p_init() and register iface as WIFI_TYPE_P2P
- Add net_get_if_by_bss_type() to replace direct g_mlan/g_uap refs
- Extend net_wlan_set_mac_address() with wfd_mac parameter
- Wire up register_frame, deinit_ap, set_p2p_powersave ops
- Fix LLC-header removal: use net_pkt_data() after net_buf_pull()

Signed-off-by: Hui Bai <hui.bai@nxp.com>

Author: nxf58150

drivers/wifi/nxp/Kconfig.nxp

@@ -20,6 +20,7 @@ if WIFI_NXP
 module = WIFI_NXP
 
 config HEAP_MEM_POOL_ADD_SIZE_NXP_WIFI
+	def_int 102400 if WIFI_NM_WPA_SUPPLICANT_P2P
 	def_int 25984 if WIFI_NM_WPA_SUPPLICANT
 	def_int 51200
 
@@ -454,6 +455,14 @@ config NXP_WIFI_SCAN_TASK_STACK_SIZE
 	help
 	  This option specifies the size of the stack used by the wifi scan task.
 
+config NXP_WIFI_P2P_SUPPORT
+	bool "Wi-Fi P2P (Wi-Fi Direct) Support"
+	default y if WIFI_NM_WPA_SUPPLICANT_P2P
+	help
+	  Registers a dedicated Zephyr net_if for Wi-Fi P2P (Wi-Fi Direct).
+	  This enables IP networking over a P2P group interface and allows
+	  P2P shell commands to target the P2P iface directly.
+
 endmenu
 
 menu "Wi-Fi thread priority configurations"

drivers/wifi/nxp/incl/nxp_wifi_net.h

@@ -268,7 +268,9 @@ static inline uint32_t net_inet_aton(const char *cp)
  * \param[in] uapmac uap MAC address.
  *
  */
-void net_wlan_set_mac_address(unsigned char *stamac, unsigned char *uapmac);
+void net_wlan_set_mac_address(unsigned char *sta_mac,
+			      unsigned char *uap_mac,
+			      unsigned char *wfd_mac);
 
 /* Skip a number of bytes at the start of a stack buffer
  *
@@ -475,6 +477,15 @@ struct netif *net_get_sta_interface(void);
 struct netif *net_get_uap_interface(void);
 #endif
 
+#ifdef CONFIG_WIFI_NM_WPA_SUPPLICANT_P2P
+/* Get P2P interface netif structure pointer
+ *
+ * \rerurn A pointer to P2P interface netif structure
+ *
+ */
+struct netif *net_get_wfd_interface(void);
+#endif
+
 /* NXP wrapper to get network interface name.
  *
  * @details If interface name support is not enabled, empty string is returned.
@@ -877,4 +888,15 @@ void nxp_wifi_internal_register_rx_cb(int (*rx_cb_fn)(struct net_if *iface, stru
  * @return Pointer to net_iface if found; NULL otherwise
  */
 const struct netif *net_if_get_binding(const char *ifname);
+
+/* Get net interface by BSS type
+ *
+ * This API searches for a network interface based on the bss type
+ * and returns the corresponding net_if instance.
+ *
+ * @param interface BSS type of the network interface
+ *
+ * @return pointer to net_if when found; NULL otherwise
+ */
+struct net_if *net_get_if_by_bss_type(int interface);
 #endif /* _NXP_WIFI_NET_H_ */