diff options
Diffstat (limited to 'arch/um/drivers/slip.h')
| -rw-r--r-- | arch/um/drivers/slip.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/um/drivers/slip.h b/arch/um/drivers/slip.h new file mode 100644 index 00000000000..495f2f1b142 --- /dev/null +++ b/arch/um/drivers/slip.h @@ -0,0 +1,39 @@ +#ifndef __UM_SLIP_H +#define __UM_SLIP_H + +#define BUF_SIZE 1500 + /* two bytes each for a (pathological) max packet of escaped chars + * + * terminating END char + initial END char */ +#define ENC_BUF_SIZE (2 * BUF_SIZE + 2) + +struct slip_data { + void *dev; + char name[sizeof("slnnnnn\0")]; + char *addr; + char *gate_addr; + int slave; + char ibuf[ENC_BUF_SIZE]; + char obuf[ENC_BUF_SIZE]; + int more; /* more data: do not read fd until ibuf has been drained */ + int pos; + int esc; +}; + +extern struct net_user_info slip_user_info; + +extern int set_umn_addr(int fd, char *addr, char *ptp_addr); +extern int slip_user_read(int fd, void *buf, int len, struct slip_data *pri); +extern int slip_user_write(int fd, void *buf, int len, struct slip_data *pri); + +#endif + +/* + * 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: + */ |