| #include "linux/config.h" |
| #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 = -1, |
| .ibuf = { '\0' }, |
| .obuf = { '\0' }, |
| .pos = 0, |
| .esc = 0, |
| .dev = dev }); |
| |
| 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; |
| 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: |
| */ |