include/trace/events/skb.h

Source file repositories/reference/linux-study-clean/include/trace/events/skb.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/skb.h
Extension
.h
Size
2101 bytes
Lines
99
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#undef TRACE_SYSTEM
#define TRACE_SYSTEM skb

#if !defined(_TRACE_SKB_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SKB_H

#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/tracepoint.h>

#undef FN
#define FN(reason)	TRACE_DEFINE_ENUM(SKB_DROP_REASON_##reason);
DEFINE_DROP_REASON(FN, FN)

#undef FN
#undef FNe
#define FN(reason)	{ SKB_DROP_REASON_##reason, #reason },
#define FNe(reason)	{ SKB_DROP_REASON_##reason, #reason }

/*
 * Tracepoint for free an sk_buff:
 */
TRACE_EVENT(kfree_skb,

	TP_PROTO(struct sk_buff *skb, void *location,
		 enum skb_drop_reason reason, const struct sock *rx_sk),

	TP_ARGS(skb, location, reason, rx_sk),

	TP_STRUCT__entry(
		__field(void *,		skbaddr)
		__field(void *,		location)
		__field(const void *,	rx_sk)
		__field(unsigned short,	protocol)
		__field(enum skb_drop_reason,	reason)
	),

	TP_fast_assign(
		__entry->skbaddr = skb;
		__entry->location = location;
		__entry->rx_sk = rx_sk;
		__entry->protocol = ntohs(skb->protocol);
		__entry->reason = reason;
	),

	TP_printk("skbaddr=%p rx_sk=%p protocol=%u location=%pS reason: %s",
		  __entry->skbaddr, __entry->rx_sk, __entry->protocol,
		  __entry->location,
		  __print_symbolic(__entry->reason,
				   DEFINE_DROP_REASON(FN, FNe)))
);

#undef FN
#undef FNe

TRACE_EVENT(consume_skb,

	TP_PROTO(struct sk_buff *skb, void *location),

	TP_ARGS(skb, location),

	TP_STRUCT__entry(
		__field(	void *,	skbaddr)
		__field(	void *,	location)
	),

	TP_fast_assign(
		__entry->skbaddr = skb;
		__entry->location = location;
	),

	TP_printk("skbaddr=%p location=%pS", __entry->skbaddr, __entry->location)
);

TRACE_EVENT(skb_copy_datagram_iovec,

	TP_PROTO(const struct sk_buff *skb, int len),

	TP_ARGS(skb, len),

	TP_STRUCT__entry(
		__field(	const void *,		skbaddr		)
		__field(	int,			len		)
	),

	TP_fast_assign(
		__entry->skbaddr = skb;
		__entry->len = len;
	),

Annotation

Implementation Notes