drivers: wifi: siwx91x: MQTT NetStack Application

To support the SiWx917 MQTT Network Stack Application
protocol offloading, we need to integrate the Silicon
Labs APIs, so adding the corresponding source files
and include files in the kconfig and CMakelist

Signed-off-by: Rahul Gurram <rahul.gurram@silabs.com>

Author: ragurram26

drivers/wifi/siwx91x/Kconfig.siwx91x

@@ -89,6 +89,15 @@ config WIFI_SILABS_SIWX91X_HTTP_CLIENT
 	  than the Zephyr one. See also sl_http_client.h in Silabs HAL for more
 	  information about the API.
 
+config WIFI_SILABS_SIWX91X_MQTT_CLIENT
+	bool "Offloaded implementation of MQTT client"
+	help
+	  Enable this option to allow to use the MQTT(Message Queuing Telemetry
+	  Transport) implementation provided by the Network Co-Processor present
+	  on SiWx91x series. This implementation usually require less resources
+	  than the Zephyr one. See also sl_mqtt_client.h in Silabs HAL for more
+	  information about the API.
+
 config WIFI_SILABS_SIWX91X_ENABLE_ROAMING
 	bool "WiFi roaming support"
 	default y

modules/hal_silabs/wiseconnect/CMakeLists.txt

@@ -133,6 +133,16 @@ if(CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_OFFLOAD)
     ${WISECONNECT_DIR}/components/service/http_client/si91x_socket/sl_http_client.c
     ${WISECONNECT_DIR}/components/device/silabs/si91x/wireless/src/sl_si91x_http_client_callback_framework.c
   )
+  zephyr_compile_definitions_ifdef(CONFIG_WIFI_SILABS_SIWX91X_MQTT_CLIENT
+    SLI_SI91X_EMBEDDED_MQTT_CLIENT
+  )
+  zephyr_include_directories_ifdef(CONFIG_WIFI_SILABS_SIWX91X_MQTT_CLIENT
+    ${WISECONNECT_DIR}/components/service/mqtt/inc
+    ${WISECONNECT_DIR}/components/device/silabs/si91x/wireless/inc/mqtt/inc
+  )
+  zephyr_library_sources_ifdef(CONFIG_WIFI_SILABS_SIWX91X_MQTT_CLIENT
+    ${WISECONNECT_DIR}/components/service/mqtt/si91x/sl_mqtt_client.c
+  )
 endif() # CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_OFFLOAD
 if(CONFIG_BT_SILABS_SIWX91X)
   zephyr_compile_definitions(

soc/silabs/silabs_siwx91x/siwg917/nwp.c

@@ -133,6 +133,9 @@ static void siwx91x_configure_network_stack(sl_si91x_boot_configuration_t *boot_
 	if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_HTTP_CLIENT)) {
 		boot_config->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_HTTP_CLIENT;
 	}
+	if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_MQTT_CLIENT)) {
+		boot_config->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_EMB_MQTT_ENABLE;
+	}
 	boot_config->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_TCP_IP_WINDOW_SCALING;
 	boot_config->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_TCP_IP_TOTAL_SELECTS(10);