diff options
Diffstat (limited to 'kernel/arch/um/drivers/daemon_kern.c')
-rw-r--r-- | kernel/arch/um/drivers/daemon_kern.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/kernel/arch/um/drivers/daemon_kern.c b/kernel/arch/um/drivers/daemon_kern.c new file mode 100644 index 000000000..7568cc2f3 --- /dev/null +++ b/kernel/arch/um/drivers/daemon_kern.c @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and + * James Leu (jleu@mindspring.net). + * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Copyright (C) 2001 by various other people who didn't put their name here. + * Licensed under the GPL. + */ + +#include <linux/init.h> +#include <linux/netdevice.h> +#include <net_kern.h> +#include "daemon.h" + +struct daemon_init { + char *sock_type; + char *ctl_sock; +}; + +static void daemon_init(struct net_device *dev, void *data) +{ + struct uml_net_private *pri; + struct daemon_data *dpri; + struct daemon_init *init = data; + + pri = netdev_priv(dev); + 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) +{ + return net_recvfrom(fd, skb_mac_header(skb), + 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 const struct net_kern_info daemon_kern_info = { + .init = daemon_init, + .protocol = eth_protocol, + .read = daemon_read, + .write = daemon_write, +}; + +static 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 0; +} + +late_initcall(register_daemon); |