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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/drivers/slip_kern.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/drivers/slip_kern.c')
-rw-r--r-- | arch/um/drivers/slip_kern.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/arch/um/drivers/slip_kern.c b/arch/um/drivers/slip_kern.c new file mode 100644 index 0000000..0886eed --- /dev/null +++ b/arch/um/drivers/slip_kern.c @@ -0,0 +1,109 @@ +#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: + */ |