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95 lines
2.4 KiB
95 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (C) 2001 Lennert Buytenhek ([email protected]) and |
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* James Leu ([email protected]). |
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* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
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* Copyright (C) 2001 by various other people who didn't put their name here. |
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*/ |
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#include <linux/init.h> |
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#include <linux/netdevice.h> |
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#include <net_kern.h> |
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#include "daemon.h" |
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struct daemon_init { |
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char *sock_type; |
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char *ctl_sock; |
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}; |
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static void daemon_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 daemon_data *dpri; |
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struct daemon_init *init = data; |
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pri = netdev_priv(dev); |
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dpri = (struct daemon_data *) pri->user; |
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dpri->sock_type = init->sock_type; |
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dpri->ctl_sock = init->ctl_sock; |
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dpri->fd = -1; |
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dpri->control = -1; |
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dpri->dev = dev; |
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/* We will free this pointer. If it contains crap we're burned. */ |
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dpri->ctl_addr = NULL; |
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dpri->data_addr = NULL; |
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dpri->local_addr = NULL; |
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printk("daemon backend (uml_switch version %d) - %s:%s", |
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SWITCH_VERSION, dpri->sock_type, dpri->ctl_sock); |
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printk("\n"); |
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} |
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static int daemon_read(int fd, struct sk_buff *skb, struct uml_net_private *lp) |
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{ |
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return net_recvfrom(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 daemon_write(int fd, struct sk_buff *skb, struct uml_net_private *lp) |
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{ |
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return daemon_user_write(fd, skb->data, skb->len, |
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(struct daemon_data *) &lp->user); |
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} |
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static const struct net_kern_info daemon_kern_info = { |
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.init = daemon_init, |
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.protocol = eth_protocol, |
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.read = daemon_read, |
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.write = daemon_write, |
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}; |
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static int daemon_setup(char *str, char **mac_out, void *data) |
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{ |
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struct daemon_init *init = data; |
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char *remain; |
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*init = ((struct daemon_init) |
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{ .sock_type = "unix", |
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.ctl_sock = "/tmp/uml.ctl" }); |
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remain = split_if_spec(str, mac_out, &init->sock_type, &init->ctl_sock, |
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NULL); |
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if (remain != NULL) |
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printk(KERN_WARNING "daemon_setup : Ignoring data socket " |
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"specification\n"); |
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return 1; |
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} |
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static struct transport daemon_transport = { |
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.list = LIST_HEAD_INIT(daemon_transport.list), |
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.name = "daemon", |
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.setup = daemon_setup, |
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.user = &daemon_user_info, |
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.kern = &daemon_kern_info, |
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.private_size = sizeof(struct daemon_data), |
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.setup_size = sizeof(struct daemon_init), |
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}; |
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static int register_daemon(void) |
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{ |
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register_transport(&daemon_transport); |
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return 0; |
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} |
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late_initcall(register_daemon);
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