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linux/include/trace/events/sock.h
Alexander Aring e6a3e44340 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 <aahringo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-29 11:28:21 -07:00

268 lines
6.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM sock
#if !defined(_TRACE_SOCK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SOCK_H
#include <net/sock.h>
#include <net/ipv6.h>
#include <linux/tracepoint.h>
#include <linux/ipv6.h>
#include <linux/tcp.h>
#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) \
EM(IPPROTO_SCTP) \
EMe(IPPROTO_MPTCP)
#define tcp_state_names \
EM(TCP_ESTABLISHED) \
EM(TCP_SYN_SENT) \
EM(TCP_SYN_RECV) \
EM(TCP_FIN_WAIT1) \
EM(TCP_FIN_WAIT2) \
EM(TCP_TIME_WAIT) \
EM(TCP_CLOSE) \
EM(TCP_CLOSE_WAIT) \
EM(TCP_LAST_ACK) \
EM(TCP_LISTEN) \
EM(TCP_CLOSING) \
EMe(TCP_NEW_SYN_RECV)
#define skmem_kind_names \
EM(SK_MEM_SEND) \
EMe(SK_MEM_RECV)
/* enums need to be exported to user space */
#undef EM
#undef EMe
#define EM(a) TRACE_DEFINE_ENUM(a);
#define EMe(a) TRACE_DEFINE_ENUM(a);
family_names
inet_protocol_names
tcp_state_names
skmem_kind_names
#undef EM
#undef EMe
#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)
#define show_tcp_state_name(val) \
__print_symbolic(val, tcp_state_names)
#define show_skmem_kind_names(val) \
__print_symbolic(val, skmem_kind_names)
TRACE_EVENT(sock_rcvqueue_full,
TP_PROTO(struct sock *sk, struct sk_buff *skb),
TP_ARGS(sk, skb),
TP_STRUCT__entry(
__field(int, rmem_alloc)
__field(unsigned int, truesize)
__field(int, sk_rcvbuf)
),
TP_fast_assign(
__entry->rmem_alloc = atomic_read(&sk->sk_rmem_alloc);
__entry->truesize = skb->truesize;
__entry->sk_rcvbuf = READ_ONCE(sk->sk_rcvbuf);
),
TP_printk("rmem_alloc=%d truesize=%u sk_rcvbuf=%d",
__entry->rmem_alloc, __entry->truesize, __entry->sk_rcvbuf)
);
TRACE_EVENT(sock_exceed_buf_limit,
TP_PROTO(struct sock *sk, struct proto *prot, long allocated, int kind),
TP_ARGS(sk, prot, allocated, kind),
TP_STRUCT__entry(
__array(char, name, 32)
__field(long *, sysctl_mem)
__field(long, allocated)
__field(int, sysctl_rmem)
__field(int, rmem_alloc)
__field(int, sysctl_wmem)
__field(int, wmem_alloc)
__field(int, wmem_queued)
__field(int, kind)
),
TP_fast_assign(
strncpy(__entry->name, prot->name, 32);
__entry->sysctl_mem = prot->sysctl_mem;
__entry->allocated = allocated;
__entry->sysctl_rmem = sk_get_rmem0(sk, prot);
__entry->rmem_alloc = atomic_read(&sk->sk_rmem_alloc);
__entry->sysctl_wmem = sk_get_wmem0(sk, prot);
__entry->wmem_alloc = refcount_read(&sk->sk_wmem_alloc);
__entry->wmem_queued = READ_ONCE(sk->sk_wmem_queued);
__entry->kind = kind;
),
TP_printk("proto:%s sysctl_mem=%ld,%ld,%ld allocated=%ld sysctl_rmem=%d rmem_alloc=%d sysctl_wmem=%d wmem_alloc=%d wmem_queued=%d kind=%s",
__entry->name,
__entry->sysctl_mem[0],
__entry->sysctl_mem[1],
__entry->sysctl_mem[2],
__entry->allocated,
__entry->sysctl_rmem,
__entry->rmem_alloc,
__entry->sysctl_wmem,
__entry->wmem_alloc,
__entry->wmem_queued,
show_skmem_kind_names(__entry->kind)
)
);
TRACE_EVENT(inet_sock_set_state,
TP_PROTO(const struct sock *sk, const int oldstate, const int newstate),
TP_ARGS(sk, oldstate, newstate),
TP_STRUCT__entry(
__field(const void *, skaddr)
__field(int, oldstate)
__field(int, newstate)
__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->skaddr = sk;
__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);
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 oldstate=%s newstate=%s",
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,
show_tcp_state_name(__entry->oldstate),
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 */
#include <trace/define_trace.h>
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