/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef _LINUX_DROPREASON_H#define _LINUX_DROPREASON_H#include <net/dropreason-core.h> /** * enum skb_drop_reason_subsys - subsystem tag for (extended) drop reasons */enum skb_drop_reason_subsys {	/** @SKB_DROP_REASON_SUBSYS_CORE: core drop reasons defined above */	SKB_DROP_REASON_SUBSYS_CORE, 	/**	 * @SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE: mac80211 drop reasons	 * for unusable frames, see net/mac80211/drop.h	 */	SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE, 	/**	 * @SKB_DROP_REASON_SUBSYS_OPENVSWITCH: openvswitch drop reasons,	 * see net/openvswitch/drop.h	 */	SKB_DROP_REASON_SUBSYS_OPENVSWITCH, 	/** @SKB_DROP_REASON_SUBSYS_NUM: number of subsystems defined */	SKB_DROP_REASON_SUBSYS_NUM}; struct drop_reason_list {	const char * const *reasons;	size_t n_reasons;}; /* Note: due to dynamic registrations, access must be under RCU */extern const struct drop_reason_list __rcu *drop_reasons_by_subsys[SKB_DROP_REASON_SUBSYS_NUM]; void drop_reasons_register_subsys(enum skb_drop_reason_subsys subsys,				  const struct drop_reason_list *list);void drop_reasons_unregister_subsys(enum skb_drop_reason_subsys subsys); #endif