1/* SPDX-License-Identifier: GPL-2.0-or-later */
2
3#ifndef _LINUX_DROPREASON_CORE_H
4#define _LINUX_DROPREASON_CORE_H
5
6#define DEFINE_DROP_REASON(FN, FNe)	\
7	FN(NOT_SPECIFIED)		\
8	FN(NO_SOCKET)			\
9	FN(PKT_TOO_SMALL)		\
10	FN(TCP_CSUM)			\
11	FN(SOCKET_FILTER)		\
12	FN(UDP_CSUM)			\
13	FN(NETFILTER_DROP)		\
14	FN(OTHERHOST)			\
15	FN(IP_CSUM)			\
16	FN(IP_INHDR)			\
17	FN(IP_RPFILTER)			\
18	FN(UNICAST_IN_L2_MULTICAST)	\
19	FN(XFRM_POLICY)			\
20	FN(IP_NOPROTO)			\
21	FN(SOCKET_RCVBUFF)		\
22	FN(PROTO_MEM)			\
23	FN(TCP_AUTH_HDR)		\
24	FN(TCP_MD5NOTFOUND)		\
25	FN(TCP_MD5UNEXPECTED)		\
26	FN(TCP_MD5FAILURE)		\
27	FN(TCP_AONOTFOUND)		\
28	FN(TCP_AOUNEXPECTED)		\
29	FN(TCP_AOKEYNOTFOUND)		\
30	FN(TCP_AOFAILURE)		\
31	FN(SOCKET_BACKLOG)		\
32	FN(TCP_FLAGS)			\
33	FN(TCP_ABORT_ON_DATA)		\
34	FN(TCP_ZEROWINDOW)		\
35	FN(TCP_OLD_DATA)		\
36	FN(TCP_OVERWINDOW)		\
37	FN(TCP_OFOMERGE)		\
38	FN(TCP_RFC7323_PAWS)		\
39	FN(TCP_OLD_SEQUENCE)		\
40	FN(TCP_INVALID_SEQUENCE)	\
41	FN(TCP_INVALID_ACK_SEQUENCE)	\
42	FN(TCP_RESET)			\
43	FN(TCP_INVALID_SYN)		\
44	FN(TCP_CLOSE)			\
45	FN(TCP_FASTOPEN)		\
46	FN(TCP_OLD_ACK)			\
47	FN(TCP_TOO_OLD_ACK)		\
48	FN(TCP_ACK_UNSENT_DATA)		\
49	FN(TCP_OFO_QUEUE_PRUNE)		\
50	FN(TCP_OFO_DROP)		\
51	FN(IP_OUTNOROUTES)		\
52	FN(BPF_CGROUP_EGRESS)		\
53	FN(IPV6DISABLED)		\
54	FN(NEIGH_CREATEFAIL)		\
55	FN(NEIGH_FAILED)		\
56	FN(NEIGH_QUEUEFULL)		\
57	FN(NEIGH_DEAD)			\
58	FN(TC_EGRESS)			\
59	FN(SECURITY_HOOK)		\
60	FN(QDISC_DROP)			\
61	FN(CPU_BACKLOG)			\
62	FN(XDP)				\
63	FN(TC_INGRESS)			\
64	FN(UNHANDLED_PROTO)		\
65	FN(SKB_CSUM)			\
66	FN(SKB_GSO_SEG)			\
67	FN(SKB_UCOPY_FAULT)		\
68	FN(DEV_HDR)			\
69	FN(DEV_READY)			\
70	FN(FULL_RING)			\
71	FN(NOMEM)			\
72	FN(HDR_TRUNC)			\
73	FN(TAP_FILTER)			\
74	FN(TAP_TXFILTER)		\
75	FN(ICMP_CSUM)			\
76	FN(INVALID_PROTO)		\
77	FN(IP_INADDRERRORS)		\
78	FN(IP_INNOROUTES)		\
79	FN(PKT_TOO_BIG)			\
80	FN(DUP_FRAG)			\
81	FN(FRAG_REASM_TIMEOUT)		\
82	FN(FRAG_TOO_FAR)		\
83	FN(TCP_MINTTL)			\
84	FN(IPV6_BAD_EXTHDR)		\
85	FN(IPV6_NDISC_FRAG)		\
86	FN(IPV6_NDISC_HOP_LIMIT)	\
87	FN(IPV6_NDISC_BAD_CODE)		\
88	FN(IPV6_NDISC_BAD_OPTIONS)	\
89	FN(IPV6_NDISC_NS_OTHERHOST)	\
90	FN(QUEUE_PURGE)			\
91	FN(TC_COOKIE_ERROR)		\
92	FN(PACKET_SOCK_ERROR)		\
93	FN(TC_CHAIN_NOTFOUND)		\
94	FN(TC_RECLASSIFY_LOOP)		\
95	FNe(MAX)
96
97/**
98 * enum skb_drop_reason - the reasons of skb drops
99 *
100 * The reason of skb drop, which is used in kfree_skb_reason().
101 */
102enum skb_drop_reason {
103	/**
104	 * @SKB_NOT_DROPPED_YET: skb is not dropped yet (used for no-drop case)
105	 */
106	SKB_NOT_DROPPED_YET = 0,
107	/** @SKB_CONSUMED: packet has been consumed */
108	SKB_CONSUMED,
109	/** @SKB_DROP_REASON_NOT_SPECIFIED: drop reason is not specified */
110	SKB_DROP_REASON_NOT_SPECIFIED,
111	/**
112	 * @SKB_DROP_REASON_NO_SOCKET: no valid socket that can be used.
113	 * Reason could be one of three cases:
114	 * 1) no established/listening socket found during lookup process
115	 * 2) no valid request socket during 3WHS process
116	 * 3) no valid child socket during 3WHS process
117	 */
118	SKB_DROP_REASON_NO_SOCKET,
119	/** @SKB_DROP_REASON_PKT_TOO_SMALL: packet size is too small */
120	SKB_DROP_REASON_PKT_TOO_SMALL,
121	/** @SKB_DROP_REASON_TCP_CSUM: TCP checksum error */
122	SKB_DROP_REASON_TCP_CSUM,
123	/** @SKB_DROP_REASON_SOCKET_FILTER: dropped by socket filter */
124	SKB_DROP_REASON_SOCKET_FILTER,
125	/** @SKB_DROP_REASON_UDP_CSUM: UDP checksum error */
126	SKB_DROP_REASON_UDP_CSUM,
127	/** @SKB_DROP_REASON_NETFILTER_DROP: dropped by netfilter */
128	SKB_DROP_REASON_NETFILTER_DROP,
129	/**
130	 * @SKB_DROP_REASON_OTHERHOST: packet don't belong to current host
131	 * (interface is in promisc mode)
132	 */
133	SKB_DROP_REASON_OTHERHOST,
134	/** @SKB_DROP_REASON_IP_CSUM: IP checksum error */
135	SKB_DROP_REASON_IP_CSUM,
136	/**
137	 * @SKB_DROP_REASON_IP_INHDR: there is something wrong with IP header (see
138	 * IPSTATS_MIB_INHDRERRORS)
139	 */
140	SKB_DROP_REASON_IP_INHDR,
141	/**
142	 * @SKB_DROP_REASON_IP_RPFILTER: IP rpfilter validate failed. see the
143	 * document for rp_filter in ip-sysctl.rst for more information
144	 */
145	SKB_DROP_REASON_IP_RPFILTER,
146	/**
147	 * @SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST: destination address of L2 is
148	 * multicast, but L3 is unicast.
149	 */
150	SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST,
151	/** @SKB_DROP_REASON_XFRM_POLICY: xfrm policy check failed */
152	SKB_DROP_REASON_XFRM_POLICY,
153	/** @SKB_DROP_REASON_IP_NOPROTO: no support for IP protocol */
154	SKB_DROP_REASON_IP_NOPROTO,
155	/** @SKB_DROP_REASON_SOCKET_RCVBUFF: socket receive buff is full */
156	SKB_DROP_REASON_SOCKET_RCVBUFF,
157	/**
158	 * @SKB_DROP_REASON_PROTO_MEM: proto memory limition, such as udp packet
159	 * drop out of udp_memory_allocated.
160	 */
161	SKB_DROP_REASON_PROTO_MEM,
162	/**
163	 * @SKB_DROP_REASON_TCP_AUTH_HDR: TCP-MD5 or TCP-AO hashes are met
164	 * twice or set incorrectly.
165	 */
166	SKB_DROP_REASON_TCP_AUTH_HDR,
167	/**
168	 * @SKB_DROP_REASON_TCP_MD5NOTFOUND: no MD5 hash and one expected,
169	 * corresponding to LINUX_MIB_TCPMD5NOTFOUND
170	 */
171	SKB_DROP_REASON_TCP_MD5NOTFOUND,
172	/**
173	 * @SKB_DROP_REASON_TCP_MD5UNEXPECTED: MD5 hash and we're not expecting
174	 * one, corresponding to LINUX_MIB_TCPMD5UNEXPECTED
175	 */
176	SKB_DROP_REASON_TCP_MD5UNEXPECTED,
177	/**
178	 * @SKB_DROP_REASON_TCP_MD5FAILURE: MD5 hash and its wrong, corresponding
179	 * to LINUX_MIB_TCPMD5FAILURE
180	 */
181	SKB_DROP_REASON_TCP_MD5FAILURE,
182	/**
183	 * @SKB_DROP_REASON_TCP_AONOTFOUND: no TCP-AO hash and one was expected,
184	 * corresponding to LINUX_MIB_TCPAOREQUIRED
185	 */
186	SKB_DROP_REASON_TCP_AONOTFOUND,
187	/**
188	 * @SKB_DROP_REASON_TCP_AOUNEXPECTED: TCP-AO hash is present and it
189	 * was not expected, corresponding to LINUX_MIB_TCPAOKEYNOTFOUND
190	 */
191	SKB_DROP_REASON_TCP_AOUNEXPECTED,
192	/**
193	 * @SKB_DROP_REASON_TCP_AOKEYNOTFOUND: TCP-AO key is unknown,
194	 * corresponding to LINUX_MIB_TCPAOKEYNOTFOUND
195	 */
196	SKB_DROP_REASON_TCP_AOKEYNOTFOUND,
197	/**
198	 * @SKB_DROP_REASON_TCP_AOFAILURE: TCP-AO hash is wrong,
199	 * corresponding to LINUX_MIB_TCPAOBAD
200	 */
201	SKB_DROP_REASON_TCP_AOFAILURE,
202	/**
203	 * @SKB_DROP_REASON_SOCKET_BACKLOG: failed to add skb to socket backlog (
204	 * see LINUX_MIB_TCPBACKLOGDROP)
205	 */
206	SKB_DROP_REASON_SOCKET_BACKLOG,
207	/** @SKB_DROP_REASON_TCP_FLAGS: TCP flags invalid */
208	SKB_DROP_REASON_TCP_FLAGS,
209	/**
210	 * @SKB_DROP_REASON_TCP_ABORT_ON_DATA: abort on data, corresponding to
211	 * LINUX_MIB_TCPABORTONDATA
212	 */
213	SKB_DROP_REASON_TCP_ABORT_ON_DATA,
214	/**
215	 * @SKB_DROP_REASON_TCP_ZEROWINDOW: TCP receive window size is zero,
216	 * see LINUX_MIB_TCPZEROWINDOWDROP
217	 */
218	SKB_DROP_REASON_TCP_ZEROWINDOW,
219	/**
220	 * @SKB_DROP_REASON_TCP_OLD_DATA: the TCP data reveived is already
221	 * received before (spurious retrans may happened), see
222	 * LINUX_MIB_DELAYEDACKLOST
223	 */
224	SKB_DROP_REASON_TCP_OLD_DATA,
225	/**
226	 * @SKB_DROP_REASON_TCP_OVERWINDOW: the TCP data is out of window,
227	 * the seq of the first byte exceed the right edges of receive
228	 * window
229	 */
230	SKB_DROP_REASON_TCP_OVERWINDOW,
231	/**
232	 * @SKB_DROP_REASON_TCP_OFOMERGE: the data of skb is already in the ofo
233	 * queue, corresponding to LINUX_MIB_TCPOFOMERGE
234	 */
235	SKB_DROP_REASON_TCP_OFOMERGE,
236	/**
237	 * @SKB_DROP_REASON_TCP_RFC7323_PAWS: PAWS check, corresponding to
238	 * LINUX_MIB_PAWSESTABREJECTED, LINUX_MIB_PAWSACTIVEREJECTED
239	 */
240	SKB_DROP_REASON_TCP_RFC7323_PAWS,
241	/** @SKB_DROP_REASON_TCP_OLD_SEQUENCE: Old SEQ field (duplicate packet) */
242	SKB_DROP_REASON_TCP_OLD_SEQUENCE,
243	/** @SKB_DROP_REASON_TCP_INVALID_SEQUENCE: Not acceptable SEQ field */
244	SKB_DROP_REASON_TCP_INVALID_SEQUENCE,
245	/**
246	 * @SKB_DROP_REASON_TCP_INVALID_ACK_SEQUENCE: Not acceptable ACK SEQ
247	 * field because ack sequence is not in the window between snd_una
248	 * and snd_nxt
249	 */
250	SKB_DROP_REASON_TCP_INVALID_ACK_SEQUENCE,
251	/** @SKB_DROP_REASON_TCP_RESET: Invalid RST packet */
252	SKB_DROP_REASON_TCP_RESET,
253	/**
254	 * @SKB_DROP_REASON_TCP_INVALID_SYN: Incoming packet has unexpected
255	 * SYN flag
256	 */
257	SKB_DROP_REASON_TCP_INVALID_SYN,
258	/** @SKB_DROP_REASON_TCP_CLOSE: TCP socket in CLOSE state */
259	SKB_DROP_REASON_TCP_CLOSE,
260	/** @SKB_DROP_REASON_TCP_FASTOPEN: dropped by FASTOPEN request socket */
261	SKB_DROP_REASON_TCP_FASTOPEN,
262	/** @SKB_DROP_REASON_TCP_OLD_ACK: TCP ACK is old, but in window */
263	SKB_DROP_REASON_TCP_OLD_ACK,
264	/** @SKB_DROP_REASON_TCP_TOO_OLD_ACK: TCP ACK is too old */
265	SKB_DROP_REASON_TCP_TOO_OLD_ACK,
266	/**
267	 * @SKB_DROP_REASON_TCP_ACK_UNSENT_DATA: TCP ACK for data we haven't
268	 * sent yet
269	 */
270	SKB_DROP_REASON_TCP_ACK_UNSENT_DATA,
271	/** @SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE: pruned from TCP OFO queue */
272	SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE,
273	/** @SKB_DROP_REASON_TCP_OFO_DROP: data already in receive queue */
274	SKB_DROP_REASON_TCP_OFO_DROP,
275	/** @SKB_DROP_REASON_IP_OUTNOROUTES: route lookup failed */
276	SKB_DROP_REASON_IP_OUTNOROUTES,
277	/**
278	 * @SKB_DROP_REASON_BPF_CGROUP_EGRESS: dropped by BPF_PROG_TYPE_CGROUP_SKB
279	 * eBPF program
280	 */
281	SKB_DROP_REASON_BPF_CGROUP_EGRESS,
282	/** @SKB_DROP_REASON_IPV6DISABLED: IPv6 is disabled on the device */
283	SKB_DROP_REASON_IPV6DISABLED,
284	/** @SKB_DROP_REASON_NEIGH_CREATEFAIL: failed to create neigh entry */
285	SKB_DROP_REASON_NEIGH_CREATEFAIL,
286	/** @SKB_DROP_REASON_NEIGH_FAILED: neigh entry in failed state */
287	SKB_DROP_REASON_NEIGH_FAILED,
288	/** @SKB_DROP_REASON_NEIGH_QUEUEFULL: arp_queue for neigh entry is full */
289	SKB_DROP_REASON_NEIGH_QUEUEFULL,
290	/** @SKB_DROP_REASON_NEIGH_DEAD: neigh entry is dead */
291	SKB_DROP_REASON_NEIGH_DEAD,
292	/** @SKB_DROP_REASON_TC_EGRESS: dropped in TC egress HOOK */
293	SKB_DROP_REASON_TC_EGRESS,
294	/** @SKB_DROP_REASON_SECURITY_HOOK: dropped due to security HOOK */
295	SKB_DROP_REASON_SECURITY_HOOK,
296	/**
297	 * @SKB_DROP_REASON_QDISC_DROP: dropped by qdisc when packet outputting (
298	 * failed to enqueue to current qdisc)
299	 */
300	SKB_DROP_REASON_QDISC_DROP,
301	/**
302	 * @SKB_DROP_REASON_CPU_BACKLOG: failed to enqueue the skb to the per CPU
303	 * backlog queue. This can be caused by backlog queue full (see
304	 * netdev_max_backlog in net.rst) or RPS flow limit
305	 */
306	SKB_DROP_REASON_CPU_BACKLOG,
307	/** @SKB_DROP_REASON_XDP: dropped by XDP in input path */
308	SKB_DROP_REASON_XDP,
309	/** @SKB_DROP_REASON_TC_INGRESS: dropped in TC ingress HOOK */
310	SKB_DROP_REASON_TC_INGRESS,
311	/** @SKB_DROP_REASON_UNHANDLED_PROTO: protocol not implemented or not supported */
312	SKB_DROP_REASON_UNHANDLED_PROTO,
313	/** @SKB_DROP_REASON_SKB_CSUM: sk_buff checksum computation error */
314	SKB_DROP_REASON_SKB_CSUM,
315	/** @SKB_DROP_REASON_SKB_GSO_SEG: gso segmentation error */
316	SKB_DROP_REASON_SKB_GSO_SEG,
317	/**
318	 * @SKB_DROP_REASON_SKB_UCOPY_FAULT: failed to copy data from user space,
319	 * e.g., via zerocopy_sg_from_iter() or skb_orphan_frags_rx()
320	 */
321	SKB_DROP_REASON_SKB_UCOPY_FAULT,
322	/** @SKB_DROP_REASON_DEV_HDR: device driver specific header/metadata is invalid */
323	SKB_DROP_REASON_DEV_HDR,
324	/**
325	 * @SKB_DROP_REASON_DEV_READY: the device is not ready to xmit/recv due to
326	 * any of its data structure that is not up/ready/initialized,
327	 * e.g., the IFF_UP is not set, or driver specific tun->tfiles[txq]
328	 * is not initialized
329	 */
330	SKB_DROP_REASON_DEV_READY,
331	/** @SKB_DROP_REASON_FULL_RING: ring buffer is full */
332	SKB_DROP_REASON_FULL_RING,
333	/** @SKB_DROP_REASON_NOMEM: error due to OOM */
334	SKB_DROP_REASON_NOMEM,
335	/**
336	 * @SKB_DROP_REASON_HDR_TRUNC: failed to trunc/extract the header from
337	 * networking data, e.g., failed to pull the protocol header from
338	 * frags via pskb_may_pull()
339	 */
340	SKB_DROP_REASON_HDR_TRUNC,
341	/**
342	 * @SKB_DROP_REASON_TAP_FILTER: dropped by (ebpf) filter directly attached
343	 * to tun/tap, e.g., via TUNSETFILTEREBPF
344	 */
345	SKB_DROP_REASON_TAP_FILTER,
346	/**
347	 * @SKB_DROP_REASON_TAP_TXFILTER: dropped by tx filter implemented at
348	 * tun/tap, e.g., check_filter()
349	 */
350	SKB_DROP_REASON_TAP_TXFILTER,
351	/** @SKB_DROP_REASON_ICMP_CSUM: ICMP checksum error */
352	SKB_DROP_REASON_ICMP_CSUM,
353	/**
354	 * @SKB_DROP_REASON_INVALID_PROTO: the packet doesn't follow RFC 2211,
355	 * such as a broadcasts ICMP_TIMESTAMP
356	 */
357	SKB_DROP_REASON_INVALID_PROTO,
358	/**
359	 * @SKB_DROP_REASON_IP_INADDRERRORS: host unreachable, corresponding to
360	 * IPSTATS_MIB_INADDRERRORS
361	 */
362	SKB_DROP_REASON_IP_INADDRERRORS,
363	/**
364	 * @SKB_DROP_REASON_IP_INNOROUTES: network unreachable, corresponding to
365	 * IPSTATS_MIB_INADDRERRORS
366	 */
367	SKB_DROP_REASON_IP_INNOROUTES,
368	/**
369	 * @SKB_DROP_REASON_PKT_TOO_BIG: packet size is too big (maybe exceed the
370	 * MTU)
371	 */
372	SKB_DROP_REASON_PKT_TOO_BIG,
373	/** @SKB_DROP_REASON_DUP_FRAG: duplicate fragment */
374	SKB_DROP_REASON_DUP_FRAG,
375	/** @SKB_DROP_REASON_FRAG_REASM_TIMEOUT: fragment reassembly timeout */
376	SKB_DROP_REASON_FRAG_REASM_TIMEOUT,
377	/**
378	 * @SKB_DROP_REASON_FRAG_TOO_FAR: ipv4 fragment too far.
379	 * (/proc/sys/net/ipv4/ipfrag_max_dist)
380	 */
381	SKB_DROP_REASON_FRAG_TOO_FAR,
382	/**
383	 * @SKB_DROP_REASON_TCP_MINTTL: ipv4 ttl or ipv6 hoplimit below
384	 * the threshold (IP_MINTTL or IPV6_MINHOPCOUNT).
385	 */
386	SKB_DROP_REASON_TCP_MINTTL,
387	/** @SKB_DROP_REASON_IPV6_BAD_EXTHDR: Bad IPv6 extension header. */
388	SKB_DROP_REASON_IPV6_BAD_EXTHDR,
389	/** @SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). */
390	SKB_DROP_REASON_IPV6_NDISC_FRAG,
391	/** @SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. */
392	SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT,
393	/** @SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. */
394	SKB_DROP_REASON_IPV6_NDISC_BAD_CODE,
395	/** @SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS: invalid NDISC options. */
396	SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS,
397	/**
398	 * @SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST: NEIGHBOUR SOLICITATION
399	 * for another host.
400	 */
401	SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST,
402	/** @SKB_DROP_REASON_QUEUE_PURGE: bulk free. */
403	SKB_DROP_REASON_QUEUE_PURGE,
404	/**
405	 * @SKB_DROP_REASON_TC_COOKIE_ERROR: An error occurred whilst
406	 * processing a tc ext cookie.
407	 */
408	SKB_DROP_REASON_TC_COOKIE_ERROR,
409	/**
410	 * @SKB_DROP_REASON_PACKET_SOCK_ERROR: generic packet socket errors
411	 * after its filter matches an incoming packet.
412	 */
413	SKB_DROP_REASON_PACKET_SOCK_ERROR,
414	/** @SKB_DROP_REASON_TC_CHAIN_NOTFOUND: tc chain lookup failed. */
415	SKB_DROP_REASON_TC_CHAIN_NOTFOUND,
416	/**
417	 * @SKB_DROP_REASON_TC_RECLASSIFY_LOOP: tc exceeded max reclassify loop
418	 * iterations.
419	 */
420	SKB_DROP_REASON_TC_RECLASSIFY_LOOP,
421	/**
422	 * @SKB_DROP_REASON_MAX: the maximum of core drop reasons, which
423	 * shouldn't be used as a real 'reason' - only for tracing code gen
424	 */
425	SKB_DROP_REASON_MAX,
426
427	/**
428	 * @SKB_DROP_REASON_SUBSYS_MASK: subsystem mask in drop reasons,
429	 * see &enum skb_drop_reason_subsys
430	 */
431	SKB_DROP_REASON_SUBSYS_MASK = 0xffff0000,
432};
433
434#define SKB_DROP_REASON_SUBSYS_SHIFT	16
435
436#define SKB_DR_INIT(name, reason)				\
437	enum skb_drop_reason name = SKB_DROP_REASON_##reason
438#define SKB_DR(name)						\
439	SKB_DR_INIT(name, NOT_SPECIFIED)
440#define SKB_DR_SET(name, reason)				\
441	(name = SKB_DROP_REASON_##reason)
442#define SKB_DR_OR(name, reason)					\
443	do {							\
444		if (name == SKB_DROP_REASON_NOT_SPECIFIED ||	\
445		    name == SKB_NOT_DROPPED_YET)		\
446			SKB_DR_SET(name, reason);		\
447	} while (0)
448
449#endif
450