drivers: ethernet: Add dummy driver for vnd,ethernet

Add dummy driver for "vnd,ethernet" to use in build_all tests.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

drivers/ethernet/CMakeLists.txt

@@ -39,7 +39,8 @@ zephyr_library_sources_ifdef(CONFIG_ETH_SMSC91X		eth_smsc91x.c)
 zephyr_library_sources_ifdef(CONFIG_ETH_IVSHMEM 	eth_ivshmem.c eth_ivshmem_queue.c)
 zephyr_library_sources_ifdef(CONFIG_ETH_ADIN2111	eth_adin2111.c)
 zephyr_library_sources_ifdef(CONFIG_ETH_LAN865X	        eth_lan865x.c oa_tc6.c)
-zephyr_library_sources_ifdef(CONFIG_ETH_XMC4XXX     eth_xmc4xxx.c)
+zephyr_library_sources_ifdef(CONFIG_ETH_XMC4XXX		eth_xmc4xxx.c)
+zephyr_library_sources_ifdef(CONFIG_ETH_TEST		eth_test.c)
 
 if(CONFIG_ETH_NXP_S32_NETC)
   zephyr_library_sources(eth_nxp_s32_netc.c)

drivers/ethernet/Kconfig

@@ -74,6 +74,7 @@ source "drivers/ethernet/Kconfig.adin2111"
 source "drivers/ethernet/Kconfig.numaker"
 source "drivers/ethernet/Kconfig.lan865x"
 source "drivers/ethernet/Kconfig.xmc4xxx"
+source "drivers/ethernet/Kconfig.test"
 
 source "drivers/ethernet/eth_nxp_enet_qos/Kconfig"
 

drivers/ethernet/Kconfig.test

@@ -0,0 +1,6 @@
+# Copyright (c) 2024 TOKITA Hiroshi
+# SPDX-License-Identifier: Apache-2.0
+
+config ETH_TEST
+	def_bool DT_HAS_VND_ETHERNET_ENABLED
+	depends on DT_HAS_VND_ETHERNET_ENABLED

drivers/ethernet/eth_test.c

@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2024 TOKITA Hiroshi
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*
+ * This is not a real ethenet driver. It is used to instantiate struct
+ * devices for the "vnd,ethernet" devicetree compatible used in test code.
+ */
+
+#include <zephyr/net/ethernet.h>
+
+#define DT_DRV_COMPAT vnd_ethernet
+
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+struct net_stats_eth *vnd_ethernet_get_stats(const struct device *dev);
+{
+	ARG_UNUSED(dev);
+
+	return NULL;
+}
+
+#endif
+int vnd_ethernet_start(const struct device *dev)
+{
+	ARG_UNUSED(dev);
+
+	return -ENOTSUP;
+}
+
+int vnd_ethernet_stop(const struct device *dev)
+{
+	ARG_UNUSED(dev);
+
+	return -ENOTSUP;
+}
+
+enum ethernet_hw_caps vnd_ethernet_get_capabilities(const struct device *dev)
+{
+	ARG_UNUSED(dev);
+
+	return 0;
+}
+
+int vnd_ethernet_set_config(const struct device *dev, enum ethernet_config_type type,
+			    const struct ethernet_config *config)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(type);
+	ARG_UNUSED(config);
+
+	return -ENOTSUP;
+}
+
+int vnd_ethernet_get_config(const struct device *dev, enum ethernet_config_type type,
+			    struct ethernet_config *config)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(type);
+	ARG_UNUSED(config);
+
+	return -ENOTSUP;
+}
+
+#if defined(CONFIG_NET_VLAN)
+int vnd_ethernet_vlan_setup(const struct device *dev, struct net_if *iface, uint16_t tag,
+			    bool enable)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(iface);
+	ARG_UNUSED(tag);
+	ARG_UNUSED(enable);
+
+	return -ENOTSUP;
+}
+
+#endif /* CONFIG_NET_VLAN */
+
+#if defined(CONFIG_PTP_CLOCK)
+const struct device *vnd_ethernet_get_ptp_clock(const struct device *dev)
+{
+	ARG_UNUSED(dev);
+
+	return NULL;
+}
+
+#endif /* CONFIG_PTP_CLOCK */
+const struct device *vnd_ethernet_get_phy(const struct device *dev)
+{
+	ARG_UNUSED(dev);
+
+	return NULL;
+}
+
+int vnd_ethernet_send(const struct device *dev, struct net_pkt *pkt)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(pkt);
+
+	return -ENOTSUP;
+}
+
+void vnd_ethernet_init(struct net_if *iface)
+{
+	ARG_UNUSED(iface);
+}
+
+struct ethernet_api vnd_ethernet_api = {
+	.iface_api.init = vnd_ethernet_init,
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+	.get_stats = vnd_ethernet_get_stats,
+#endif
+	.start = vnd_ethernet_start,
+	.stop = vnd_ethernet_stop,
+	.get_capabilities = vnd_ethernet_get_capabilities,
+	.set_config = vnd_ethernet_set_config,
+	.get_config = vnd_ethernet_get_config,
+#if defined(CONFIG_NET_VLAN)
+	.vlan_setup = vnd_ethernet_vlan_setup,
+#endif /* CONFIG_NET_VLAN */
+
+#if defined(CONFIG_PTP_CLOCK)
+	.get_ptp_clock = vnd_ethernet_get_ptp_clock,
+#endif /* CONFIG_PTP_CLOCK */
+	.get_phy = vnd_ethernet_get_phy,
+	.send = vnd_ethernet_send,
+};
+
+#define VND_ETHERNET_INIT(n)                                                                       \
+	DEVICE_DT_INST_DEFINE(n, NULL, NULL, NULL, NULL, POST_KERNEL, CONFIG_ETH_INIT_PRIORITY,    \
+			      &vnd_ethernet_api);
+
+DT_INST_FOREACH_STATUS_OKAY(VND_ETHERNET_INIT)

dts/bindings/test/vnd,ethernet.yaml

@@ -0,0 +1,8 @@
+# Copyright (c) 2024 TOKITA Hiroshi
+# SPDX-License-Identifier: Apache-2.0
+
+description: Test Ethernet node
+
+compatible: "vnd,ethernet"
+
+include: ethernet-controller.yaml