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/* 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
M errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm/Makefile')