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tcp: mark trace event arguments sk and skb as const 

Some functions that we plan to add trace points require const sk
and/or skb. So we mark these fields as const in the tracepoint.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Song Liu 2017-10-23 09:20:23 -07:00 committed by David S. Miller
parent f6e37b2541
commit 7344e29f28
1 changed files with 4 additions and 4 deletions
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8
include/trace/events/tcp.h
View File

@ -17,13 +17,13 @@
*/ */
DECLARE_EVENT_CLASS(tcp_event_sk_skb, DECLARE_EVENT_CLASS(tcp_event_sk_skb,
TP_PROTO(struct sock *sk, struct sk_buff *skb), TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
TP_ARGS(sk, skb), TP_ARGS(sk, skb),
TP_STRUCT__entry( TP_STRUCT__entry(
__field(void *, skbaddr) __field(const void *, skbaddr)
__field(void *, skaddr) __field(const void *, skaddr)
__field(__u16, sport) __field(__u16, sport)
__field(__u16, dport) __field(__u16, dport)
__array(__u8, saddr, 4) __array(__u8, saddr, 4)
@ -72,7 +72,7 @@ DECLARE_EVENT_CLASS(tcp_event_sk_skb,
DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb, DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb,
TP_PROTO(struct sock *sk, struct sk_buff *skb), TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
TP_ARGS(sk, skb) TP_ARGS(sk, skb)
); );