projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #include "linux/config.h" |
| 2 | #include "linux/kernel.h" | |
| 3 | #include "linux/stddef.h" | |
| 4 | #include "linux/init.h" | |
| 5 | #include "linux/netdevice.h" | |
| 6 | #include "linux/if_arp.h" | |
| 7 | #include "net_kern.h" | |
| 8 | #include "net_user.h" | |
| 9 | #include "kern.h" | |
| 10 | #include "slip.h" | |
| 11 | ||
| 12 | struct slip_init { | |
| 13 | char *gate_addr; | |
| 14 | }; | |
| 15 | ||
| 16 | void slip_init(struct net_device *dev, void *data) | |
| 17 | { | |
| 18 | struct uml_net_private *private; | |
| 19 | struct slip_data *spri; | |
| 20 | struct slip_init *init = data; | |
| 21 | ||
| 22 | private = dev->priv; | |
| 23 | spri = (struct slip_data *) private->user; | |
| 24 | *spri = ((struct slip_data) | |
| 25 | { .name = { '\0' }, | |
| 26 | .addr = NULL, | |
| 27 | .gate_addr = init->gate_addr, | |
| 28 | .slave = -1, | |
| 29 | .ibuf = { '\0' }, | |
| 30 | .obuf = { '\0' }, | |
| 31 | .pos = 0, | |
| 32 | .esc = 0, | |
| 33 | .dev = dev }); | |
| 34 | ||
| 35 | dev->init = NULL; | |
| 36 | dev->hard_header_len = 0; | |
| 37 | dev->addr_len = 4; | |
| 38 | dev->type = ARPHRD_ETHER; | |
| 39 | dev->tx_queue_len = 256; | |
| 40 | dev->flags = IFF_NOARP; | |
| 41 | printk("SLIP backend - SLIP IP = %s\n", spri->gate_addr); | |
| 42 | } | |
| 43 | ||
| 44 | static unsigned short slip_protocol(struct sk_buff *skbuff) | |
| 45 | { | |
| 46 | return(htons(ETH_P_IP)); | |
| 47 | } | |
| 48 | ||
| 49 | static int slip_read(int fd, struct sk_buff **skb, | |
| 50 | struct uml_net_private *lp) | |
| 51 | { | |
| 52 | return(slip_user_read(fd, (*skb)->mac.raw, (*skb)->dev->mtu, | |
| 53 | (struct slip_data *) &lp->user)); | |
| 54 | } | |
| 55 | ||
| 56 | static int slip_write(int fd, struct sk_buff **skb, | |
| 57 | struct uml_net_private *lp) | |
| 58 | { | |
| 59 | return(slip_user_write(fd, (*skb)->data, (*skb)->len, | |
| 60 | (struct slip_data *) &lp->user)); | |
| 61 | } | |
| 62 | ||
| 63 | struct net_kern_info slip_kern_info = { | |
| 64 | .init = slip_init, | |
| 65 | .protocol = slip_protocol, | |
| 66 | .read = slip_read, | |
| 67 | .write = slip_write, | |
| 68 | }; | |
| 69 | ||
| 70 | static int slip_setup(char *str, char **mac_out, void *data) | |
| 71 | { | |
| 72 | struct slip_init *init = data; | |
| 73 | ||
| 74 | *init = ((struct slip_init) | |
| 75 | { .gate_addr = NULL }); | |
| 76 | ||
| 77 | if(str[0] != '\0') | |
| 78 | init->gate_addr = str; | |
| 79 | return(1); | |
| 80 | } | |
| 81 | ||
| 82 | static struct transport slip_transport = { | |
| 83 | .list = LIST_HEAD_INIT(slip_transport.list), | |
| 84 | .name = "slip", | |
| 85 | .setup = slip_setup, | |
| 86 | .user = &slip_user_info, | |
| 87 | .kern = &slip_kern_info, | |
| 88 | .private_size = sizeof(struct slip_data), | |
| 89 | .setup_size = sizeof(struct slip_init), | |
| 90 | }; | |
| 91 | ||
| 92 | static int register_slip(void) | |
| 93 | { | |
| 94 | register_transport(&slip_transport); | |
| 95 | return(1); | |
| 96 | } | |
| 97 | ||
| 98 | __initcall(register_slip); | |
| 99 | ||
| 100 | /* | |
| 101 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
| 102 | * Emacs will notice this stuff at the end of the file and automatically | |
| 103 | * adjust the settings for this buffer only. This must remain at the end | |
| 104 | * of the file. | |
| 105 | * --------------------------------------------------------------------------- | |
| 106 | * Local variables: | |
| 107 | * c-file-style: "linux" | |
| 108 | * End: | |
| 109 | */ |