dropreason.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2
 3#ifndef _LINUX_DROPREASON_H
 4#define _LINUX_DROPREASON_H
 5#include <net/dropreason-core.h>
 6
 7/**
 8 * enum skb_drop_reason_subsys - subsystem tag for (extended) drop reasons
 9 */
10enum skb_drop_reason_subsys {
11	/** @SKB_DROP_REASON_SUBSYS_CORE: core drop reasons defined above */
12	SKB_DROP_REASON_SUBSYS_CORE,
13
14	/**
15	 * @SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE: mac80211 drop reasons
16	 * for unusable frames, see net/mac80211/drop.h
17	 */
18	SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE,
19
20	/**
21	 * @SKB_DROP_REASON_SUBSYS_OPENVSWITCH: openvswitch drop reasons,
22	 * see net/openvswitch/drop.h
23	 */
24	SKB_DROP_REASON_SUBSYS_OPENVSWITCH,
25
26	/** @SKB_DROP_REASON_SUBSYS_NUM: number of subsystems defined */
27	SKB_DROP_REASON_SUBSYS_NUM
28};
29
30struct drop_reason_list {
31	const char * const *reasons;
32	size_t n_reasons;
33};
34
35/* Note: due to dynamic registrations, access must be under RCU */
36extern const struct drop_reason_list __rcu *
37drop_reasons_by_subsys[SKB_DROP_REASON_SUBSYS_NUM];
38
39void drop_reasons_register_subsys(enum skb_drop_reason_subsys subsys,
40				  const struct drop_reason_list *list);
41void drop_reasons_unregister_subsys(enum skb_drop_reason_subsys subsys);
42
43#endif