linux/include/net/netns/xfrm.h

#ifndef __NETNS_XFRM_H
#define __NETNS_XFRM_H

#include <linux/list.h>

struct netns_xfrm {
	struct list_head	state_all;
	/*
	 * Hash table to find appropriate SA towards given target (endpoint of
	 * tunnel or destination of transport mode) allowed by selector.
	 *
	 * Main use is finding SA after policy selected tunnel or transport
	 * mode. Also, it can be used by ah/esp icmp error handler to find
	 * offending SA.
	 */
	struct hlist_head	*state_bydst;
};

#endif