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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

/* atmarp.h - ATM ARP protocol and kernel-demon interface definitions */

/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */

#ifndef _LINUX_ATMARP_H

#define _LINUX_ATMARP_H

#include <linux/types.h>

#include <linux/atmapi.h>

#include <linux/atmioc.h>

#define ATMARP_RETRY_DELAY 30 /* request next resolution or forget

NAK after 30 sec - should go into

atmclip.h */

#define ATMARP_MAX_UNRES_PACKETS 5 /* queue that many packets while

waiting for the resolver */

#define ATMARPD_CTRL _IO('a',ATMIOC_CLIP+1) /* become atmarpd ctrl sock */

#define ATMARP_MKIP _IO('a',ATMIOC_CLIP+2) /* attach socket to IP */

#define ATMARP_SETENTRY _IO('a',ATMIOC_CLIP+3) /* fill or hide ARP entry */

#define ATMARP_ENCAP _IO('a',ATMIOC_CLIP+5) /* change encapsulation */

enum atmarp_ctrl_type {

act_invalid, /* catch uninitialized structures */

act_need, /* need address resolution */

act_up, /* interface is coming up */

act_down, /* interface is going down */

act_change /* interface configuration has changed */

};

struct atmarp_ctrl {

enum atmarp_ctrl_type type; /* message type */

int itf_num;/* interface number (if present) */

__be32 ip; /* IP address (act_need only) */

};

#endif