1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* atmarp.h - ATM ARP protocol and kernel-demon interface definitions */
3 
4 /* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
5 
6 
7 #ifndef _LINUX_ATMARP_H
8 #define _LINUX_ATMARP_H
9 
10 #include <linux/types.h>
11 #include <linux/atmapi.h>
12 #include <linux/atmioc.h>
13 
14 
15 #define ATMARP_RETRY_DELAY 30		/* request next resolution or forget
16 					   NAK after 30 sec - should go into
17 					   atmclip.h */
18 #define ATMARP_MAX_UNRES_PACKETS 5	/* queue that many packets while
19 					   waiting for the resolver */
20 
21 
22 #define ATMARPD_CTRL	_IO('a',ATMIOC_CLIP+1)	/* become atmarpd ctrl sock */
23 #define ATMARP_MKIP	_IO('a',ATMIOC_CLIP+2)	/* attach socket to IP */
24 #define ATMARP_SETENTRY	_IO('a',ATMIOC_CLIP+3)	/* fill or hide ARP entry */
25 #define ATMARP_ENCAP	_IO('a',ATMIOC_CLIP+5)	/* change encapsulation */
26 
27 
28 enum atmarp_ctrl_type {
29 	act_invalid,		/* catch uninitialized structures */
30 	act_need,		/* need address resolution */
31 	act_up,			/* interface is coming up */
32 	act_down,		/* interface is going down */
33 	act_change		/* interface configuration has changed */
34 };
35 
36 struct atmarp_ctrl {
37 	enum atmarp_ctrl_type	type;	/* message type */
38 	int			itf_num;/* interface number (if present) */
39 	__be32			ip;	/* IP address (act_need only) */
40 };
41 
42 #endif
43