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