From e6a3e4434000de5c36d606e5b5da5f7ba49444bd Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Sun, 27 Jun 2021 18:48:22 -0400 Subject: net: sock: add trace for socket errors This patch will add tracers to trace inet socket errors only. A user space monitor application can track connection errors indepedent from socket lifetime and do additional handling. For example a cluster manager can fence a node if errors occurs in a specific heuristic. Signed-off-by: Alexander Aring Signed-off-by: David S. Miller --- include/trace/events/sock.h | 60 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) (limited to 'include') diff --git a/include/trace/events/sock.h b/include/trace/events/sock.h index a966d4b5ab37..12c315782766 100644 --- a/include/trace/events/sock.h +++ b/include/trace/events/sock.h @@ -201,6 +201,66 @@ TRACE_EVENT(inet_sock_set_state, show_tcp_state_name(__entry->newstate)) ); +TRACE_EVENT(inet_sk_error_report, + + TP_PROTO(const struct sock *sk), + + TP_ARGS(sk), + + TP_STRUCT__entry( + __field(int, error) + __field(__u16, sport) + __field(__u16, dport) + __field(__u16, family) + __field(__u16, protocol) + __array(__u8, saddr, 4) + __array(__u8, daddr, 4) + __array(__u8, saddr_v6, 16) + __array(__u8, daddr_v6, 16) + ), + + TP_fast_assign( + struct inet_sock *inet = inet_sk(sk); + struct in6_addr *pin6; + __be32 *p32; + + __entry->error = sk->sk_err; + __entry->family = sk->sk_family; + __entry->protocol = sk->sk_protocol; + __entry->sport = ntohs(inet->inet_sport); + __entry->dport = ntohs(inet->inet_dport); + + p32 = (__be32 *) __entry->saddr; + *p32 = inet->inet_saddr; + + p32 = (__be32 *) __entry->daddr; + *p32 = inet->inet_daddr; + +#if IS_ENABLED(CONFIG_IPV6) + if (sk->sk_family == AF_INET6) { + pin6 = (struct in6_addr *)__entry->saddr_v6; + *pin6 = sk->sk_v6_rcv_saddr; + pin6 = (struct in6_addr *)__entry->daddr_v6; + *pin6 = sk->sk_v6_daddr; + } else +#endif + { + pin6 = (struct in6_addr *)__entry->saddr_v6; + ipv6_addr_set_v4mapped(inet->inet_saddr, pin6); + pin6 = (struct in6_addr *)__entry->daddr_v6; + ipv6_addr_set_v4mapped(inet->inet_daddr, pin6); + } + ), + + TP_printk("family=%s protocol=%s sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c error=%d", + show_family_name(__entry->family), + show_inet_protocol_name(__entry->protocol), + __entry->sport, __entry->dport, + __entry->saddr, __entry->daddr, + __entry->saddr_v6, __entry->daddr_v6, + __entry->error) +); + #endif /* _TRACE_SOCK_H */ /* This part must be outside protection */ -- cgit v1.2.3