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Diffstat (limited to 'include/trace/events/tcp.h')
-rw-r--r--include/trace/events/tcp.h134
1 files changed, 59 insertions, 75 deletions
diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index 699dafd204ea..49b5ee091cf6 100644
--- a/include/trace/events/tcp.h
+++ b/include/trace/events/tcp.h
@@ -11,35 +11,7 @@
#include <net/ipv6.h>
#include <net/tcp.h>
#include <linux/sock_diag.h>
-
-#define TP_STORE_V4MAPPED(__entry, saddr, daddr) \
- do { \
- struct in6_addr *pin6; \
- \
- pin6 = (struct in6_addr *)__entry->saddr_v6; \
- ipv6_addr_set_v4mapped(saddr, pin6); \
- pin6 = (struct in6_addr *)__entry->daddr_v6; \
- ipv6_addr_set_v4mapped(daddr, pin6); \
- } while (0)
-
-#if IS_ENABLED(CONFIG_IPV6)
-#define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \
- do { \
- if (sk->sk_family == AF_INET6) { \
- struct in6_addr *pin6; \
- \
- pin6 = (struct in6_addr *)__entry->saddr_v6; \
- *pin6 = saddr6; \
- pin6 = (struct in6_addr *)__entry->daddr_v6; \
- *pin6 = daddr6; \
- } else { \
- TP_STORE_V4MAPPED(__entry, saddr, daddr); \
- } \
- } while (0)
-#else
-#define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \
- TP_STORE_V4MAPPED(__entry, saddr, daddr)
-#endif
+#include <net/rstreason.h>
/*
* tcp event with arguments sk and skb
@@ -103,17 +75,70 @@ DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb,
TP_ARGS(sk, skb)
);
+#undef FN
+#define FN(reason) TRACE_DEFINE_ENUM(SK_RST_REASON_##reason);
+DEFINE_RST_REASON(FN, FN)
+
+#undef FN
+#undef FNe
+#define FN(reason) { SK_RST_REASON_##reason, #reason },
+#define FNe(reason) { SK_RST_REASON_##reason, #reason }
+
/*
* skb of trace_tcp_send_reset is the skb that caused RST. In case of
* active reset, skb should be NULL
*/
-DEFINE_EVENT(tcp_event_sk_skb, tcp_send_reset,
+TRACE_EVENT(tcp_send_reset,
- TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
+ TP_PROTO(const struct sock *sk,
+ const struct sk_buff *skb,
+ const enum sk_rst_reason reason),
- TP_ARGS(sk, skb)
+ TP_ARGS(sk, skb, reason),
+
+ TP_STRUCT__entry(
+ __field(const void *, skbaddr)
+ __field(const void *, skaddr)
+ __field(int, state)
+ __field(enum sk_rst_reason, reason)
+ __array(__u8, saddr, sizeof(struct sockaddr_in6))
+ __array(__u8, daddr, sizeof(struct sockaddr_in6))
+ ),
+
+ TP_fast_assign(
+ __entry->skbaddr = skb;
+ __entry->skaddr = sk;
+ /* Zero means unknown state. */
+ __entry->state = sk ? sk->sk_state : 0;
+
+ memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
+ memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
+
+ if (sk && sk_fullsock(sk)) {
+ const struct inet_sock *inet = inet_sk(sk);
+
+ TP_STORE_ADDR_PORTS(__entry, inet, sk);
+ } else if (skb) {
+ const struct tcphdr *th = (const struct tcphdr *)skb->data;
+ /*
+ * We should reverse the 4-tuple of skb, so later
+ * it can print the right flow direction of rst.
+ */
+ TP_STORE_ADDR_PORTS_SKB(skb, th, entry->daddr, entry->saddr);
+ }
+ __entry->reason = reason;
+ ),
+
+ TP_printk("skbaddr=%p skaddr=%p src=%pISpc dest=%pISpc state=%s reason=%s",
+ __entry->skbaddr, __entry->skaddr,
+ __entry->saddr, __entry->daddr,
+ __entry->state ? show_tcp_state_name(__entry->state) : "UNKNOWN",
+ __print_symbolic(__entry->reason, DEFINE_RST_REASON(FN, FNe)))
);
+#undef FN
+#undef FNe
+
/*
* tcp event with arguments sk
*
@@ -302,48 +327,6 @@ TRACE_EVENT(tcp_probe,
__entry->skbaddr, __entry->skaddr)
);
-#define TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb) \
- do { \
- const struct tcphdr *th = (const struct tcphdr *)skb->data; \
- struct sockaddr_in *v4 = (void *)__entry->saddr; \
- \
- v4->sin_family = AF_INET; \
- v4->sin_port = th->source; \
- v4->sin_addr.s_addr = ip_hdr(skb)->saddr; \
- v4 = (void *)__entry->daddr; \
- v4->sin_family = AF_INET; \
- v4->sin_port = th->dest; \
- v4->sin_addr.s_addr = ip_hdr(skb)->daddr; \
- } while (0)
-
-#if IS_ENABLED(CONFIG_IPV6)
-
-#define TP_STORE_ADDR_PORTS_SKB(__entry, skb) \
- do { \
- const struct iphdr *iph = ip_hdr(skb); \
- \
- if (iph->version == 6) { \
- const struct tcphdr *th = (const struct tcphdr *)skb->data; \
- struct sockaddr_in6 *v6 = (void *)__entry->saddr; \
- \
- v6->sin6_family = AF_INET6; \
- v6->sin6_port = th->source; \
- v6->sin6_addr = ipv6_hdr(skb)->saddr; \
- v6 = (void *)__entry->daddr; \
- v6->sin6_family = AF_INET6; \
- v6->sin6_port = th->dest; \
- v6->sin6_addr = ipv6_hdr(skb)->daddr; \
- } else \
- TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb); \
- } while (0)
-
-#else
-
-#define TP_STORE_ADDR_PORTS_SKB(__entry, skb) \
- TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb)
-
-#endif
-
/*
* tcp event with only skb
*/
@@ -360,12 +343,13 @@ DECLARE_EVENT_CLASS(tcp_event_skb,
),
TP_fast_assign(
+ const struct tcphdr *th = (const struct tcphdr *)skb->data;
__entry->skbaddr = skb;
memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
- TP_STORE_ADDR_PORTS_SKB(__entry, skb);
+ TP_STORE_ADDR_PORTS_SKB(skb, th, __entry->saddr, __entry->daddr);
),
TP_printk("skbaddr=%p src=%pISpc dest=%pISpc",