@@ -88,6 +88,72 @@ DEFINE_EVENT(tcp_event_sk_skb, tcp_send_reset,
TP_ARGS(sk, skb)
);
+/*
+ * tcp event with arguments sk
+ *
+ * Note: this class requires a valid sk pointer.
+ */
+DECLARE_EVENT_CLASS(tcp_event_sk,
+
+ TP_PROTO(const struct sock *sk),
+
+ TP_ARGS(sk),
+
+ TP_STRUCT__entry(
+ __field(const void *, skaddr)
+ __field(__u16, sport)
+ __field(__u16, dport)
+ __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->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("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c",
+ __entry->sport, __entry->dport,
+ __entry->saddr, __entry->daddr,
+ __entry->saddr_v6, __entry->daddr_v6)
+);
+
+DEFINE_EVENT(tcp_event_sk, tcp_receive_reset,
+
+ TP_PROTO(const struct sock *sk),
+
+ TP_ARGS(sk)
+);
+
#endif /* _TRACE_TCP_H */
/* This part must be outside protection */
@@ -75,6 +75,7 @@
#include <linux/ipsec.h>
#include <asm/unaligned.h>
#include <linux/errqueue.h>
+#include <trace/events/tcp.h>
int sysctl_tcp_fack __read_mostly;
int sysctl_tcp_max_reordering __read_mostly = 300;
@@ -4010,6 +4011,8 @@ static inline bool tcp_sequence(const struct tcp_sock *tp, u32 seq, u32 end_seq)
/* When we get a reset we do this. */
void tcp_reset(struct sock *sk)
{
+ trace_tcp_receive_reset(sk);
+
/* We want the right error as BSD sees it (and indeed as we do). */
switch (sk->sk_state) {
case TCP_SYN_SENT:
New tracepoint trace_tcp_receive_reset is added and called from tcp_reset(). This tracepoint is define with a new class tcp_event_sk. Signed-off-by: Song Liu <songliubraving@fb.com> --- include/trace/events/tcp.h | 66 ++++++++++++++++++++++++++++++++++++++++++++++ net/ipv4/tcp_input.c | 3 +++ 2 files changed, 69 insertions(+)