| /* |
| * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and |
| * James Leu (jleu@mindspring.net). |
| * Copyright (C) 2001 by various other people who didn't put their name here. |
| * Licensed under the GPL. |
| */ |
| |
| #include "linux/kernel.h" |
| #include "linux/init.h" |
| #include "linux/netdevice.h" |
| #include "linux/etherdevice.h" |
| #include "net_kern.h" |
| #include "net_user.h" |
| #include "daemon.h" |
| |
| struct daemon_init { |
| char *sock_type; |
| char *ctl_sock; |
| }; |
| |
| void daemon_init(struct net_device *dev, void *data) |
| { |
| struct uml_net_private *pri; |
| struct daemon_data *dpri; |
| struct daemon_init *init = data; |
| |
| pri = dev->priv; |
| dpri = (struct daemon_data *) pri->user; |
| dpri->sock_type = init->sock_type; |
| dpri->ctl_sock = init->ctl_sock; |
| dpri->fd = -1; |
| dpri->control = -1; |
| dpri->dev = dev; |
| /* We will free this pointer. If it contains crap we're burned. */ |
| dpri->ctl_addr = NULL; |
| dpri->data_addr = NULL; |
| dpri->local_addr = NULL; |
| |
| printk("daemon backend (uml_switch version %d) - %s:%s", |
| SWITCH_VERSION, dpri->sock_type, dpri->ctl_sock); |
| printk("\n"); |
| } |
| |
| static int daemon_read(int fd, struct sk_buff **skb, |
| struct uml_net_private *lp) |
| { |
| *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER); |
| if(*skb == NULL) return(-ENOMEM); |
| return(net_recvfrom(fd, (*skb)->mac.raw, |
| (*skb)->dev->mtu + ETH_HEADER_OTHER)); |
| } |
| |
| static int daemon_write(int fd, struct sk_buff **skb, |
| struct uml_net_private *lp) |
| { |
| return(daemon_user_write(fd, (*skb)->data, (*skb)->len, |
| (struct daemon_data *) &lp->user)); |
| } |
| |
| static struct net_kern_info daemon_kern_info = { |
| .init = daemon_init, |
| .protocol = eth_protocol, |
| .read = daemon_read, |
| .write = daemon_write, |
| }; |
| |
| int daemon_setup(char *str, char **mac_out, void *data) |
| { |
| struct daemon_init *init = data; |
| char *remain; |
| |
| *init = ((struct daemon_init) |
| { .sock_type = "unix", |
| .ctl_sock = "/tmp/uml.ctl" }); |
| |
| remain = split_if_spec(str, mac_out, &init->sock_type, &init->ctl_sock, |
| NULL); |
| if(remain != NULL) |
| printk(KERN_WARNING "daemon_setup : Ignoring data socket " |
| "specification\n"); |
| |
| return(1); |
| } |
| |
| static struct transport daemon_transport = { |
| .list = LIST_HEAD_INIT(daemon_transport.list), |
| .name = "daemon", |
| .setup = daemon_setup, |
| .user = &daemon_user_info, |
| .kern = &daemon_kern_info, |
| .private_size = sizeof(struct daemon_data), |
| .setup_size = sizeof(struct daemon_init), |
| }; |
| |
| static int register_daemon(void) |
| { |
| register_transport(&daemon_transport); |
| return(1); |
| } |
| |
| __initcall(register_daemon); |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-file-style: "linux" |
| * End: |
| */ |