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 */
10 enum 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_MAC80211_MONITOR: mac80211 drop reasons
22 * for frames still going to monitor, see net/mac80211/drop.h
23 */
24 SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR,
25
26 /**
27 * @SKB_DROP_REASON_SUBSYS_OPENVSWITCH: openvswitch drop reasons,
28 * see net/openvswitch/drop.h
29 */
30 SKB_DROP_REASON_SUBSYS_OPENVSWITCH,
31
32 /** @SKB_DROP_REASON_SUBSYS_NUM: number of subsystems defined */
33 SKB_DROP_REASON_SUBSYS_NUM
34 };
35
36 struct drop_reason_list {
37 const char * const *reasons;
38 size_t n_reasons;
39 };
40
41 /* Note: due to dynamic registrations, access must be under RCU */
42 extern const struct drop_reason_list __rcu *
43 drop_reasons_by_subsys[SKB_DROP_REASON_SUBSYS_NUM];
44
45 void drop_reasons_register_subsys(enum skb_drop_reason_subsys subsys,
46 const struct drop_reason_list *list);
47 void drop_reasons_unregister_subsys(enum skb_drop_reason_subsys subsys);
48
49 #endif
50
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