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net: tracepoint: exposing sk_faimily in tracepoint inet_sock_set_state 

As of now, there're two sk_family are traced with sock:inet_sock_set_state,
which are AF_INET and AF_INET6.
So the sk_family are exposed as well.
Then we can conveniently use it to do the filter.

Both sk_family and sk_protocol are showed in the printk message, so we need
not expose them as tracepoint arguments.

Suggested-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Suggested-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Song Liu <songliubraving@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yafang Shao 2018-01-07 14:31:47 +08:00 committed by David S. Miller
parent 23fe846f9a
commit 0c3b34d804
1 changed files with 13 additions and 2 deletions
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15
include/trace/events/sock.h
View File

@ -11,7 +11,11 @@
#include <linux/ipv6.h>
#include <linux/tcp.h>
/* The protocol traced by sock_set_state */
#define family_names \
EM(AF_INET) \
EMe(AF_INET6)
/* The protocol traced by inet_sock_set_state */
#define inet_protocol_names \
EM(IPPROTO_TCP) \
EM(IPPROTO_DCCP) \
@ -37,6 +41,7 @@
#define EM(a) TRACE_DEFINE_ENUM(a);
#define EMe(a) TRACE_DEFINE_ENUM(a);
family_names
inet_protocol_names
tcp_state_names
@ -45,6 +50,9 @@ tcp_state_names
#define EM(a) { a, #a },
#define EMe(a) { a, #a }
#define show_family_name(val) \
__print_symbolic(val, family_names)
#define show_inet_protocol_name(val) \
__print_symbolic(val, inet_protocol_names)
@ -118,6 +126,7 @@ TRACE_EVENT(inet_sock_set_state,
__field(int, newstate)
__field(__u16, sport)
__field(__u16, dport)
__field(__u16, family)
__field(__u8, protocol)
__array(__u8, saddr, 4)
__array(__u8, daddr, 4)
@ -134,6 +143,7 @@ TRACE_EVENT(inet_sock_set_state,
__entry->oldstate = oldstate;
__entry->newstate = newstate;
__entry->family = sk->sk_family;
__entry->protocol = sk->sk_protocol;
__entry->sport = ntohs(inet->inet_sport);
__entry->dport = ntohs(inet->inet_dport);
@ -160,7 +170,8 @@ TRACE_EVENT(inet_sock_set_state,
}
),
TP_printk("protocol=%s sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c oldstate=%s newstate=%s",
TP_printk("family=%s protocol=%s sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c oldstate=%s newstate=%s",
show_family_name(__entry->family),
show_inet_protocol_name(__entry->protocol),
__entry->sport, __entry->dport,
__entry->saddr, __entry->daddr,