mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 22:54:01 +00:00
a5736edda1
Replace kfree_skb() used in __neigh_event_send() with kfree_skb_reason(). Following drop reasons are added: SKB_DROP_REASON_NEIGH_FAILED SKB_DROP_REASON_NEIGH_QUEUEFULL SKB_DROP_REASON_NEIGH_DEAD The first two reasons above should be the hot path that skb drops in neighbour subsystem. Reviewed-by: Mengen Sun <mengensun@tencent.com> Reviewed-by: Hao Peng <flyingpeng@tencent.com> Signed-off-by: Menglong Dong <imagedong@tencent.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM skb
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#if !defined(_TRACE_SKB_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_SKB_H
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/tracepoint.h>
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#define TRACE_SKB_DROP_REASON \
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EM(SKB_DROP_REASON_NOT_SPECIFIED, NOT_SPECIFIED) \
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EM(SKB_DROP_REASON_NO_SOCKET, NO_SOCKET) \
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EM(SKB_DROP_REASON_PKT_TOO_SMALL, PKT_TOO_SMALL) \
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EM(SKB_DROP_REASON_TCP_CSUM, TCP_CSUM) \
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EM(SKB_DROP_REASON_SOCKET_FILTER, SOCKET_FILTER) \
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EM(SKB_DROP_REASON_UDP_CSUM, UDP_CSUM) \
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EM(SKB_DROP_REASON_NETFILTER_DROP, NETFILTER_DROP) \
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EM(SKB_DROP_REASON_OTHERHOST, OTHERHOST) \
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EM(SKB_DROP_REASON_IP_CSUM, IP_CSUM) \
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EM(SKB_DROP_REASON_IP_INHDR, IP_INHDR) \
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EM(SKB_DROP_REASON_IP_RPFILTER, IP_RPFILTER) \
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EM(SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST, \
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UNICAST_IN_L2_MULTICAST) \
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EM(SKB_DROP_REASON_XFRM_POLICY, XFRM_POLICY) \
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EM(SKB_DROP_REASON_IP_NOPROTO, IP_NOPROTO) \
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EM(SKB_DROP_REASON_SOCKET_RCVBUFF, SOCKET_RCVBUFF) \
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EM(SKB_DROP_REASON_PROTO_MEM, PROTO_MEM) \
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EM(SKB_DROP_REASON_TCP_MD5NOTFOUND, TCP_MD5NOTFOUND) \
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EM(SKB_DROP_REASON_TCP_MD5UNEXPECTED, \
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TCP_MD5UNEXPECTED) \
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EM(SKB_DROP_REASON_TCP_MD5FAILURE, TCP_MD5FAILURE) \
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EM(SKB_DROP_REASON_SOCKET_BACKLOG, SOCKET_BACKLOG) \
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EM(SKB_DROP_REASON_TCP_FLAGS, TCP_FLAGS) \
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EM(SKB_DROP_REASON_TCP_ZEROWINDOW, TCP_ZEROWINDOW) \
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EM(SKB_DROP_REASON_TCP_OLD_DATA, TCP_OLD_DATA) \
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EM(SKB_DROP_REASON_TCP_OVERWINDOW, TCP_OVERWINDOW) \
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EM(SKB_DROP_REASON_TCP_OFOMERGE, TCP_OFOMERGE) \
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EM(SKB_DROP_REASON_IP_OUTNOROUTES, IP_OUTNOROUTES) \
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EM(SKB_DROP_REASON_BPF_CGROUP_EGRESS, \
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BPF_CGROUP_EGRESS) \
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EM(SKB_DROP_REASON_IPV6DISABLED, IPV6DISABLED) \
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EM(SKB_DROP_REASON_NEIGH_CREATEFAIL, NEIGH_CREATEFAIL) \
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EM(SKB_DROP_REASON_NEIGH_FAILED, NEIGH_FAILED) \
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EM(SKB_DROP_REASON_NEIGH_QUEUEFULL, NEIGH_QUEUEFULL) \
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EM(SKB_DROP_REASON_NEIGH_DEAD, NEIGH_DEAD) \
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EMe(SKB_DROP_REASON_MAX, MAX)
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#undef EM
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#undef EMe
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#define EM(a, b) TRACE_DEFINE_ENUM(a);
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#define EMe(a, b) TRACE_DEFINE_ENUM(a);
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TRACE_SKB_DROP_REASON
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#undef EM
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#undef EMe
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#define EM(a, b) { a, #b },
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#define EMe(a, b) { a, #b }
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/*
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* Tracepoint for free an sk_buff:
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*/
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TRACE_EVENT(kfree_skb,
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TP_PROTO(struct sk_buff *skb, void *location,
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enum skb_drop_reason reason),
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TP_ARGS(skb, location, reason),
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TP_STRUCT__entry(
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__field(void *, skbaddr)
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__field(void *, location)
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__field(unsigned short, protocol)
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__field(enum skb_drop_reason, reason)
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),
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TP_fast_assign(
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__entry->skbaddr = skb;
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__entry->location = location;
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__entry->protocol = ntohs(skb->protocol);
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__entry->reason = reason;
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),
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TP_printk("skbaddr=%p protocol=%u location=%p reason: %s",
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__entry->skbaddr, __entry->protocol, __entry->location,
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__print_symbolic(__entry->reason,
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TRACE_SKB_DROP_REASON))
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);
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TRACE_EVENT(consume_skb,
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TP_PROTO(struct sk_buff *skb),
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TP_ARGS(skb),
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TP_STRUCT__entry(
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__field( void *, skbaddr )
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),
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TP_fast_assign(
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__entry->skbaddr = skb;
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),
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TP_printk("skbaddr=%p", __entry->skbaddr)
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);
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TRACE_EVENT(skb_copy_datagram_iovec,
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TP_PROTO(const struct sk_buff *skb, int len),
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TP_ARGS(skb, len),
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TP_STRUCT__entry(
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__field( const void *, skbaddr )
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__field( int, len )
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),
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TP_fast_assign(
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__entry->skbaddr = skb;
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__entry->len = len;
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),
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TP_printk("skbaddr=%p len=%d", __entry->skbaddr, __entry->len)
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);
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#endif /* _TRACE_SKB_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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