ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/um/os-Linux/drivers/tuntap_kern.c b/marvell/linux/arch/um/os-Linux/drivers/tuntap_kern.c
new file mode 100644
index 0000000..adcb671
--- /dev/null
+++ b/marvell/linux/arch/um/os-Linux/drivers/tuntap_kern.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ */
+
+#include <linux/netdevice.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <asm/errno.h>
+#include <net_kern.h>
+#include "tuntap.h"
+
+struct tuntap_init {
+ char *dev_name;
+ char *gate_addr;
+};
+
+static void tuntap_init(struct net_device *dev, void *data)
+{
+ struct uml_net_private *pri;
+ struct tuntap_data *tpri;
+ struct tuntap_init *init = data;
+
+ pri = netdev_priv(dev);
+ tpri = (struct tuntap_data *) pri->user;
+ tpri->dev_name = init->dev_name;
+ tpri->fixed_config = (init->dev_name != NULL);
+ tpri->gate_addr = init->gate_addr;
+ tpri->fd = -1;
+ tpri->dev = dev;
+
+ printk(KERN_INFO "TUN/TAP backend - ");
+ if (tpri->gate_addr != NULL)
+ printk(KERN_CONT "IP = %s", tpri->gate_addr);
+ printk(KERN_CONT "\n");
+}
+
+static int tuntap_read(int fd, struct sk_buff *skb, struct uml_net_private *lp)
+{
+ return net_read(fd, skb_mac_header(skb),
+ skb->dev->mtu + ETH_HEADER_OTHER);
+}
+
+static int tuntap_write(int fd, struct sk_buff *skb, struct uml_net_private *lp)
+{
+ return net_write(fd, skb->data, skb->len);
+}
+
+const struct net_kern_info tuntap_kern_info = {
+ .init = tuntap_init,
+ .protocol = eth_protocol,
+ .read = tuntap_read,
+ .write = tuntap_write,
+};
+
+int tuntap_setup(char *str, char **mac_out, void *data)
+{
+ struct tuntap_init *init = data;
+
+ *init = ((struct tuntap_init)
+ { .dev_name = NULL,
+ .gate_addr = NULL });
+ if (tap_setup_common(str, "tuntap", &init->dev_name, mac_out,
+ &init->gate_addr))
+ return 0;
+
+ return 1;
+}
+
+static struct transport tuntap_transport = {
+ .list = LIST_HEAD_INIT(tuntap_transport.list),
+ .name = "tuntap",
+ .setup = tuntap_setup,
+ .user = &tuntap_user_info,
+ .kern = &tuntap_kern_info,
+ .private_size = sizeof(struct tuntap_data),
+ .setup_size = sizeof(struct tuntap_init),
+};
+
+static int register_tuntap(void)
+{
+ register_transport(&tuntap_transport);
+ return 0;
+}
+
+late_initcall(register_tuntap);