#include "linux/kernel.h" #include "linux/stddef.h" #include "linux/init.h" #include "linux/netdevice.h" #include "linux/if_arp.h" #include "net_kern.h" #include "net_user.h" #include "kern.h" #include "slip.h" struct slip_init { char *gate_addr; }; void slip_init(struct net_device *dev, void *data) { struct uml_net_private *private; struct slip_data *spri; struct slip_init *init = data; private = dev->priv; spri = (struct slip_data *) private->user; *spri = ((struct slip_data) { name : { '\0' }, addr: NULL, gate_addr : init->gate_addr, slave : 0, buf : { '\0' }, pos : 0, esc : 0, dev : dev }); strncpy(dev->name, "umn", IFNAMSIZ); dev->init = NULL; dev->hard_header_len = 0; dev->addr_len = 4; dev->type = ARPHRD_ETHER; dev->tx_queue_len = 256; dev->flags = IFF_NOARP; if(register_netdev(dev)) printk(KERN_ERR "Couldn't initialize umn\n"); printk("SLIP backend - SLIP IP = %s\n", spri->gate_addr); } static unsigned short slip_protocol(struct sk_buff *skbuff) { return(htons(ETH_P_IP)); } static int slip_read(int fd, struct sk_buff **skb, struct uml_net_private *lp) { return(slip_user_read(fd, (*skb)->mac.raw, (*skb)->dev->mtu, (struct slip_data *) &lp->user)); } static int slip_write(int fd, struct sk_buff **skb, struct uml_net_private *lp) { return(slip_user_write(fd, (*skb)->data, (*skb)->len, (struct slip_data *) &lp->user)); } struct net_kern_info slip_kern_info = { init: slip_init, protocol: slip_protocol, read: slip_read, write: slip_write, }; static int slip_setup(char *str, char **mac_out, void *data) { struct slip_init *init = data; *init = ((struct slip_init) { gate_addr : NULL }); if(str[0] != '\0') init->gate_addr = str; return(1); } static struct transport slip_transport = { list : LIST_HEAD_INIT(slip_transport.list), name : "slip", setup : slip_setup, user : &slip_user_info, kern : &slip_kern_info, private_size : sizeof(struct slip_data), setup_size : sizeof(struct slip_init), }; static int register_slip(void) { register_transport(&slip_transport); return(1); } __initcall(register_slip); /* * 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: */