linux - include/net/dropreason.h

49 lines · 1.3 KiB

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_OPENVSWITCH: openvswitch drop reasons,
22	* see net/openvswitch/drop.h
23	*/
24	SKB_DROP_REASON_SUBSYS_OPENVSWITCH,
25
26	/**
27	* @SKB_DROP_REASON_SUBSYS_QDISC: TC qdisc drop reasons,
28	* see include/net/dropreason-qdisc.h
29	*/
30	SKB_DROP_REASON_SUBSYS_QDISC,
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