| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and |
| 3 | * James Leu (jleu@mindspring.net). |
| 4 | * Copyright (C) 2001 by various other people who didn't put their name here. |
| 5 | * Licensed under the GPL. |
| 6 | */ |
| 7 | |
| 8 | #include "linux/kernel.h" |
| 9 | #include "linux/init.h" |
| 10 | #include "linux/netdevice.h" |
| 11 | #include "linux/etherdevice.h" |
| 12 | #include "net_kern.h" |
| 13 | #include "net_user.h" |
| 14 | #include "daemon.h" |
| 15 | |
| 16 | struct daemon_init { |
| 17 | char *sock_type; |
| 18 | char *ctl_sock; |
| 19 | }; |
| 20 | |
| 21 | void daemon_init(struct net_device *dev, void *data) |
| 22 | { |
| 23 | struct uml_net_private *pri; |
| 24 | struct daemon_data *dpri; |
| 25 | struct daemon_init *init = data; |
| 26 | |
| 27 | pri = dev->priv; |
| 28 | dpri = (struct daemon_data *) pri->user; |
| 29 | dpri->sock_type = init->sock_type; |
| 30 | dpri->ctl_sock = init->ctl_sock; |
| 31 | dpri->fd = -1; |
| 32 | dpri->control = -1; |
| 33 | dpri->dev = dev; |
| 34 | |
| 35 | printk("daemon backend (uml_switch version %d) - %s:%s", |
| 36 | SWITCH_VERSION, dpri->sock_type, dpri->ctl_sock); |
| 37 | printk("\n"); |
| 38 | } |
| 39 | |
| 40 | static int daemon_read(int fd, struct sk_buff **skb, |
| 41 | struct uml_net_private *lp) |
| 42 | { |
| 43 | *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER); |
| 44 | if(*skb == NULL) return(-ENOMEM); |
| 45 | return(net_recvfrom(fd, (*skb)->mac.raw, |
| 46 | (*skb)->dev->mtu + ETH_HEADER_OTHER)); |
| 47 | } |
| 48 | |
| 49 | static int daemon_write(int fd, struct sk_buff **skb, |
| 50 | struct uml_net_private *lp) |
| 51 | { |
| 52 | return(daemon_user_write(fd, (*skb)->data, (*skb)->len, |
| 53 | (struct daemon_data *) &lp->user)); |
| 54 | } |
| 55 | |
| 56 | static struct net_kern_info daemon_kern_info = { |
| 57 | .init = daemon_init, |
| 58 | .protocol = eth_protocol, |
| 59 | .read = daemon_read, |
| 60 | .write = daemon_write, |
| 61 | }; |
| 62 | |
| 63 | int daemon_setup(char *str, char **mac_out, void *data) |
| 64 | { |
| 65 | struct daemon_init *init = data; |
| 66 | char *remain; |
| 67 | |
| 68 | *init = ((struct daemon_init) |
| 69 | { .sock_type = "unix", |
| 70 | .ctl_sock = "/tmp/uml.ctl" }); |
| 71 | |
| 72 | remain = split_if_spec(str, mac_out, &init->sock_type, &init->ctl_sock, |
| 73 | NULL); |
| 74 | if(remain != NULL) |
| 75 | printk(KERN_WARNING "daemon_setup : Ignoring data socket " |
| 76 | "specification\n"); |
| 77 | |
| 78 | return(1); |
| 79 | } |
| 80 | |
| 81 | static struct transport daemon_transport = { |
| 82 | .list = LIST_HEAD_INIT(daemon_transport.list), |
| 83 | .name = "daemon", |
| 84 | .setup = daemon_setup, |
| 85 | .user = &daemon_user_info, |
| 86 | .kern = &daemon_kern_info, |
| 87 | .private_size = sizeof(struct daemon_data), |
| 88 | .setup_size = sizeof(struct daemon_init), |
| 89 | }; |
| 90 | |
| 91 | static int register_daemon(void) |
| 92 | { |
| 93 | register_transport(&daemon_transport); |
| 94 | return(1); |
| 95 | } |
| 96 | |
| 97 | __initcall(register_daemon); |
| 98 | |
| 99 | /* |
| 100 | * Overrides for Emacs so that we follow Linus's tabbing style. |
| 101 | * Emacs will notice this stuff at the end of the file and automatically |
| 102 | * adjust the settings for this buffer only. This must remain at the end |
| 103 | * of the file. |
| 104 | * --------------------------------------------------------------------------- |
| 105 | * Local variables: |
| 106 | * c-file-style: "linux" |
| 107 | * End: |
| 108 | */ |