[linux-2.6-block.git] / arch / um / drivers / slirp.h

#ifndef __UM_SLIRP_H
#define __UM_SLIRP_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)

#define SLIRP_MAX_ARGS 100
/*
 * XXX this next definition is here because I don't understand why this
 * initializer doesn't work in slirp_kern.c:
 *
 *   argv :  { init->argv[ 0 ... SLIRP_MAX_ARGS-1 ] },
 *
 * or why I can't typecast like this:
 *
 *   argv :  (char* [SLIRP_MAX_ARGS])(init->argv), 
 */
struct arg_list_dummy_wrapper { char *argv[SLIRP_MAX_ARGS]; };

struct slirp_data {
	void *dev;
	struct arg_list_dummy_wrapper argw;
	int pid;
	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 slirp_user_info;

extern int set_umn_addr(int fd, char *addr, char *ptp_addr);
extern int slirp_user_read(int fd, void *buf, int len, struct slirp_data *pri);
extern int slirp_user_write(int fd, void *buf, int len, struct slirp_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:
 */
Commit	Line	Data
1da177e4 LT	1	#ifndef __UM_SLIRP_H
	2	#define __UM_SLIRP_H
	3
	4	#define BUF_SIZE 1500
	5	/* two bytes each for a (pathological) max packet of escaped chars + *
	6	* terminating END char + initial END char */
	7	#define ENC_BUF_SIZE (2 * BUF_SIZE + 2)
	8
	9	#define SLIRP_MAX_ARGS 100
	10	/*
	11	* XXX this next definition is here because I don't understand why this
	12	* initializer doesn't work in slirp_kern.c:
	13	*
	14	* argv : { init->argv[ 0 ... SLIRP_MAX_ARGS-1 ] },
	15	*
	16	* or why I can't typecast like this:
	17	*
	18	* argv : (char* [SLIRP_MAX_ARGS])(init->argv),
	19	*/
	20	struct arg_list_dummy_wrapper { char *argv[SLIRP_MAX_ARGS]; };
	21
	22	struct slirp_data {
	23	void *dev;
	24	struct arg_list_dummy_wrapper argw;
	25	int pid;
	26	int slave;
	27	char ibuf[ENC_BUF_SIZE];
	28	char obuf[ENC_BUF_SIZE];
	29	int more; /* more data: do not read fd until ibuf has been drained */
	30	int pos;
	31	int esc;
	32	};
	33
	34	extern struct net_user_info slirp_user_info;
	35
	36	extern int set_umn_addr(int fd, char addr, char ptp_addr);
	37	extern int slirp_user_read(int fd, void buf, int len, struct slirp_data pri);
	38	extern int slirp_user_write(int fd, void buf, int len, struct slirp_data pri);
	39
	40	#endif
	41
	42	/*
	43	* Overrides for Emacs so that we follow Linus's tabbing style.
	44	* Emacs will notice this stuff at the end of the file and automatically
	45	* adjust the settings for this buffer only. This must remain at the end
	46	* of the file.
	47	* ---------------------------------------------------------------------------
	48	* Local variables:
	49	* c-file-style: "linux"
	50	* End:
	51	*/