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