[nrfconnect] Initial Matter over WiFi implementation. (#23607)

* [nrfconnect] Initial Matter over WiFi implementation.

Some WiFi related features might not work as expected yet.
This will be fixed when the Zephyr NRF WiFi module is improved.
All implementations have been synchronized to sdk-nrf v2.1.1.

Commits included:
- Prepare configuration for hci_rpmsg
- Adapt Android CHIPTool guide to Wi-Fi devices
Make the guide a little bit more aware of the world of
Wi-Fi devices.
- Disable Wi-Fi low-power mode
Noticed Wi-Fi low-power mode causes performance issues,
at least with some APs.
- Implemented the WiFiNetworkIterator.
Replaced dummy implementation of WiFiNetworkIterator
This fixes an issue with infinite loop when using this iterator in Matter core.
- Added including CHIPMemString.h to fix WiFi build

Signed-off-by: Marcin Kajor <[email protected]>
Signed-off-by: Damian Krolik <[email protected]>
Signed-off-by: Kamil Kasperczyk <[email protected]>
Signed-off-by: Arkadiusz Balys <[email protected]>

* Restyled by prettier-markdown

Restyled by gn

Signed-off-by: Marcin Kajor <[email protected]>
Signed-off-by: Damian Krolik <[email protected]>
Signed-off-by: Kamil Kasperczyk <[email protected]>
Signed-off-by: Arkadiusz Balys <[email protected]>
Co-authored-by: Restyled.io <[email protected]>

config/nrfconnect/chip-module/CMakeLists.txt

@@ -219,6 +219,7 @@ chip_gn_arg_bool  ("chip_progress_logging"                  CONFIG_MATTER_LOG_LE
 chip_gn_arg_bool  ("chip_detail_logging"                    CONFIG_MATTER_LOG_LEVEL GREATER_EQUAL 4)
 chip_gn_arg_bool  ("chip_automation_logging"                "false")
 chip_gn_arg_bool  ("chip_malloc_sys_heap"                   CONFIG_CHIP_MALLOC_SYS_HEAP)
+chip_gn_arg_bool  ("chip_enable_wifi"                       CONFIG_WIFI_NRF700X)
 
 if (CONFIG_CHIP_FACTORY_DATA)
     chip_gn_arg_bool  ("chip_use_transitional_commissionable_data_provider"  "false")
@@ -232,8 +233,12 @@ if (CONFIG_CHIP_ROTATING_DEVICE_ID)
     chip_gn_arg_bool("chip_enable_additional_data_advertising" "true")
 endif()
 
-if (CONFIG_CHIP_ENABLE_DNSSD_SRP)
+if (CONFIG_NET_L2_OPENTHREAD)
     chip_gn_arg_string("chip_mdns" "platform")
+elseif(CONFIG_WIFI_NRF700X)
+    chip_gn_arg_string("chip_mdns" "minimal")
+else()
+    chip_gn_arg_string("chip_mdns" "none")
 endif()
 
 if (CONFIG_CHIP_CRYPTO_PSA)

config/nrfconnect/chip-module/Kconfig.defaults

@@ -213,20 +213,72 @@ config NVS_LOOKUP_CACHE_SIZE
     int
     default 512
 
+# Enable OpenThread
+
+config NET_L2_OPENTHREAD
+    bool
+    default y if !WIFI_NRF700X
+
+if NET_L2_OPENTHREAD
+
 # Increase the default RX stack size
 config IEEE802154_NRF5_RX_STACK_SIZE
     int
     default 1024
 
-# Enable OpenThread
+endif
 
-config NET_L2_OPENTHREAD
+if CHIP_WIFI
+
+config NRF_WIFI_LOW_POWER
     bool
-    default y
+    default n
+
+config MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
+    bool
+    default n
+
+config SYSTEM_WORKQUEUE_STACK_SIZE
+    int
+    default 1120
+
+# align these numbers to match the OpenThread config
+config NET_IF_UNICAST_IPV6_ADDR_COUNT
+    int
+    default 6
+
+config NET_IF_MCAST_IPV6_ADDR_COUNT
+    int
+    default 8
+
+config NET_SOCKETS_POSIX_NAMES
+    bool
+    default n
+
+config MBEDTLS_SSL_OUT_CONTENT_LEN
+    int
+    default 900
+
+# options managed by IP4/IP6 simultaneous support
+# aligned here to match OpenThread config
+config NET_MAX_ROUTERS
+    int
+    default 1
+
+config NET_MAX_CONN
+    int
+    default 4
+
+config SHELL_STACK_SIZE
+    int
+    default 2616
+
+config HEAP_MEM_POOL_SIZE
+    int
+    default 200000
+
+endif
 
-choice OPENTHREAD_STACK_VERSION
-	default OPENTHREAD_THREAD_VERSION_1_3
-endchoice
 
 # Enable mbedTLS from nrf_security library
 

config/nrfconnect/chip-module/Kconfig.features

@@ -19,6 +19,31 @@
 
 if CHIP
 
+config CHIP_WIFI
+	bool "Enable nrfconnect Wi-Fi support"
+	default y if SHIELD_NRF7002_EK || BOARD_NRF7002DK_NRF5340_CPUAPP
+	select WIFI_NRF700X
+	select WIFI
+	select WPA_SUPP
+	imply FLASH
+	imply SETTINGS
+	imply NVS
+	imply FLASH_MAP
+	imply NORDIC_SECURITY_BACKEND
+	imply MBEDTLS_ENTROPY_C
+	imply MBEDTLS_PSA_CRYPTO_C
+	imply NET_STATISTICS
+	imply NET_L2_ETHERNET
+	imply NET_PKT_TXTIME
+	imply NET_PKT_TIMESTAMP
+	imply MBEDTLS_PROMPTLESS
+	imply BUILD_OUTPUT_META
+	imply USE_DT_CODE_PARTITION # might be removed when the OTA is enabled
+	imply NET_IPV6_ND # enable Neighbor Discovery to handle Router Advertisements
+	imply NET_IPV6_NBR_CACHE
+	imply NET_STATISTICS_IPV6
+	imply NET_STATISTICS_USER_API
+
 config CHIP_QSPI_NOR
 	bool "Enable QSPI NOR feature set"
 	help

config/nrfconnect/chip-module/Kconfig.hci_rpmsg.defaults

@@ -0,0 +1,99 @@
+#
+#   Copyright (c) 2022 Project CHIP Authors
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+#
+
+# The purpose of this file is to define new default values of settings used when building hci_rpmsg child image for Matter samples.
+
+config LOG
+    bool
+    default n
+
+config HEAP_MEM_POOL_SIZE
+    int
+    default 8192
+
+config MAIN_STACK_SIZE
+    int
+    default 2048
+
+config SYSTEM_WORKQUEUE_STACK_SIZE
+    int
+    default 2048
+
+config BT
+    bool
+    default y
+
+config BT_HCI_RAW
+    bool
+    default y
+
+config BT_MAX_CONN
+    int
+    default 1
+
+config BT_PERIPHERAL
+    bool
+    default y
+
+config BT_CENTRAL
+    bool
+    default n
+
+config BT_BUF_ACL_RX_SIZE
+    int
+    default 502
+
+config BT_BUF_ACL_TX_SIZE
+    int
+    default 251
+
+config BT_CTLR_DATA_LENGTH_MAX
+    int
+    default 251
+
+config BT_CTLR_ASSERT_HANDLER
+    bool
+    default y
+
+config BT_HCI_RAW_RESERVE
+    int
+    default 1
+
+# Workaround: Unable to allocate command buffer when using K_NO_WAIT since
+# Host number of completed commands does not follow normal flow control.
+config BT_BUF_CMD_TX_COUNT
+    int
+    default 10
+
+config ASSERT
+    bool
+    default y
+
+config DEBUG_INFO
+    bool
+    default y
+
+config EXCEPTION_STACK_TRACE
+    bool
+    default y
+
+config IPC_SERVICE
+    bool
+    default y
+
+config MBOX
+    bool
+    default y

config/nrfconnect/chip-module/Kconfig.hci_rpmsg.root

@@ -0,0 +1,21 @@
+#
+#   Copyright (c) 2022 Project CHIP Authors
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+#
+
+# The purpose of this file is to create a wrapper Kconfig file that will be set as
+# hci_rpmsg_KCONFIG_ROOT and processed before any other Kconfig for hci_rpmsg child image.
+
+rsource "Kconfig.hci_rpmsg.defaults"
+source "Kconfig.zephyr"

config/zephyr/Kconfig

@@ -112,7 +112,7 @@ config CHIP_ENABLE_PAIRING_AUTOSTART
 
 config CHIP_ENABLE_DNSSD_SRP
 	bool "Enable support for service registration"
-	default y
+	default y if NET_L2_OPENTHREAD
 	imply OPENTHREAD_ECDSA
 	imply OPENTHREAD_SRP_CLIENT
 	help