[PATCH 07/16] eth_uclass: Add eth_create_device to create a net udevice

[Adriano Cordova]

This comes in preparation to support calling connect_controller with a
handle with the efi_simple_network_protocol installed.

Signed-off-by: Adriano Cordova <adriano.cordova at canonical.com>
---
 include/net-common.h |  2 ++
 net/eth-uclass.c     | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/include/net-common.h b/include/net-common.h
index 1d507b13b06..ba343af4c66 100644
--- a/include/net-common.h
+++ b/include/net-common.h
@@ -203,6 +203,8 @@ int eth_receive(void *packet, int length); /* Receive a packet*/
 extern void (*push_packet)(void *packet, int length);
 #endif
 int eth_rx(void);			/* Check for received packets */
+int eth_create_device(struct udevice *parent, const char *drv_name,
+		      const char *name, struct udevice **devp);
 
 /**
  * reset_phy() - Reset the Ethernet PHY
diff --git a/net/eth-uclass.c b/net/eth-uclass.c
index 5555f82f23e..952df419b70 100644
--- a/net/eth-uclass.c
+++ b/net/eth-uclass.c
@@ -12,10 +12,12 @@
 #include <dm.h>
 #include <env.h>
 #include <log.h>
+#include <malloc.h>
 #include <net.h>
 #include <nvmem.h>
 #include <asm/global_data.h>
 #include <dm/device-internal.h>
+#include <dm/lists.h>
 #include <dm/uclass-internal.h>
 #include <net/pcap.h>
 #include "eth_internal.h"
@@ -528,6 +530,36 @@ int eth_initialize(void)
 	return num_devices;
 }
 
+int eth_create_device(struct udevice *parent, const char *drv_name,
+		      const char *name, struct udevice **devp)
+{
+	char temp[40], *str;
+	int devnum;
+	struct uclass *uc;
+	int ret;
+
+	ret = uclass_get(UCLASS_ETH, &uc);
+	if (ret)
+		return -1;
+
+	devnum = uclass_find_next_free_seq(uc);
+	if (devnum < 0)
+		return -1;
+
+	snprintf(temp, sizeof(temp), "%s_eth%d", name, devnum);
+	temp[sizeof(temp) - 1] = '\0';
+	str = strdup(temp);
+
+	ret = device_bind_driver(parent, drv_name, str, devp);
+	if (ret) {
+		free(str);
+		return ret;
+	}
+	device_set_name_alloced(*devp);
+
+	return 0;
+}
+
 static int eth_post_bind(struct udevice *dev)
 {
 	struct eth_uclass_priv *priv = uclass_get_priv(dev->uclass);
-- 
2.48.1