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
44