Merge branch 'tcp-sctp-dccp-Replace-jprobe-usage-with-trace-events'

Masami Hiramatsu says:

====================
net: tcp: sctp: dccp: Replace jprobe usage with trace events

This series is v7 of the replacement of jprobe usage with trace
events. This version fixes net/dccp/trace.h to avoid sparse
warning. Since the TP_STORE_ADDR_PORTS macro can be shared
with trace/events/tcp.h, it also introduce a new common header
file and move the definition of that macro.

Previous version is here;
 https://lkml.org/lkml/2017/12/28/7

Changes from v6:
  [5/6]: Avoid preprocessor directives in tracepoint macro args
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 203 insertions, 0 deletions

diff --git a/include/trace/events/net_probe_common.h b/include/trace/events/net_probe_common.h
new file mode 100644
index 000000000000..3930119cab08
--- /dev/null
+++ b/include/trace/events/net_probe_common.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#if !defined(_TRACE_NET_PROBE_COMMON_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_NET_PROBE_COMMON_H
+
+#define TP_STORE_ADDR_PORTS_V4(__entry, inet, sk)			\
+	do {								\
+		struct sockaddr_in *v4 = (void *)__entry->saddr;	\
+									\
+		v4->sin_family = AF_INET;				\
+		v4->sin_port = inet->inet_sport;			\
+		v4->sin_addr.s_addr = inet->inet_saddr;			\
+		v4 = (void *)__entry->daddr;				\
+		v4->sin_family = AF_INET;				\
+		v4->sin_port = inet->inet_dport;			\
+		v4->sin_addr.s_addr = inet->inet_daddr;			\
+	} while (0)
+
+#if IS_ENABLED(CONFIG_IPV6)
+
+#define TP_STORE_ADDR_PORTS(__entry, inet, sk)				\
+	do {								\
+		if (sk->sk_family == AF_INET6) {			\
+			struct sockaddr_in6 *v6 = (void *)__entry->saddr; \
+									\
+			v6->sin6_family = AF_INET6;			\
+			v6->sin6_port = inet->inet_sport;		\
+			v6->sin6_addr = inet6_sk(sk)->saddr;		\
+			v6 = (void *)__entry->daddr;			\
+			v6->sin6_family = AF_INET6;			\
+			v6->sin6_port = inet->inet_dport;		\
+			v6->sin6_addr = sk->sk_v6_daddr;		\
+		} else							\
+			TP_STORE_ADDR_PORTS_V4(__entry, inet, sk);	\
+	} while (0)
+
+#else
+
+#define TP_STORE_ADDR_PORTS(__entry, inet, sk)		\
+	TP_STORE_ADDR_PORTS_V4(__entry, inet, sk);
+
+#endif
+
+#endif
diff --git a/include/trace/events/sctp.h b/include/trace/events/sctp.h
new file mode 100644
index 000000000000..7475c7be165a
--- /dev/null
+++ b/include/trace/events/sctp.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sctp
+
+#if !defined(_TRACE_SCTP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SCTP_H
+
+#include <net/sctp/structs.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(sctp_probe_path,
+
+	TP_PROTO(struct sctp_transport *sp,
+		 const struct sctp_association *asoc),
+
+	TP_ARGS(sp, asoc),
+
+	TP_STRUCT__entry(
+		__field(__u64, asoc)
+		__field(__u32, primary)
+		__array(__u8, ipaddr, sizeof(union sctp_addr))
+		__field(__u32, state)
+		__field(__u32, cwnd)
+		__field(__u32, ssthresh)
+		__field(__u32, flight_size)
+		__field(__u32, partial_bytes_acked)
+		__field(__u32, pathmtu)
+	),
+
+	TP_fast_assign(
+		__entry->asoc = (unsigned long)asoc;
+		__entry->primary = (sp == asoc->peer.primary_path);
+		memcpy(__entry->ipaddr, &sp->ipaddr, sizeof(union sctp_addr));
+		__entry->state = sp->state;
+		__entry->cwnd = sp->cwnd;
+		__entry->ssthresh = sp->ssthresh;
+		__entry->flight_size = sp->flight_size;
+		__entry->partial_bytes_acked = sp->partial_bytes_acked;
+		__entry->pathmtu = sp->pathmtu;
+	),
+
+	TP_printk("asoc=%#llx%s ipaddr=%pISpc state=%u cwnd=%u ssthresh=%u "
+		  "flight_size=%u partial_bytes_acked=%u pathmtu=%u",
+		  __entry->asoc, __entry->primary ? "(*)" : "",
+		  __entry->ipaddr, __entry->state, __entry->cwnd,
+		  __entry->ssthresh, __entry->flight_size,
+		  __entry->partial_bytes_acked, __entry->pathmtu)
+);
+
+TRACE_EVENT(sctp_probe,
+
+	TP_PROTO(const struct sctp_endpoint *ep,
+		 const struct sctp_association *asoc,
+		 struct sctp_chunk *chunk),
+
+	TP_ARGS(ep, asoc, chunk),
+
+	TP_STRUCT__entry(
+		__field(__u64, asoc)
+		__field(__u32, mark)
+		__field(__u16, bind_port)
+		__field(__u16, peer_port)
+		__field(__u32, pathmtu)
+		__field(__u32, rwnd)
+		__field(__u16, unack_data)
+	),
+
+	TP_fast_assign(
+		struct sk_buff *skb = chunk->skb;
+
+		__entry->asoc = (unsigned long)asoc;
+		__entry->mark = skb->mark;
+		__entry->bind_port = ep->base.bind_addr.port;
+		__entry->peer_port = asoc->peer.port;
+		__entry->pathmtu = asoc->pathmtu;
+		__entry->rwnd = asoc->peer.rwnd;
+		__entry->unack_data = asoc->unack_data;
+
+		if (trace_sctp_probe_path_enabled()) {
+			struct sctp_transport *sp;
+
+			list_for_each_entry(sp, &asoc->peer.transport_addr_list,
+					    transports) {
+				trace_sctp_probe_path(sp, asoc);
+			}
+		}
+	),
+
+	TP_printk("asoc=%#llx mark=%#x bind_port=%d peer_port=%d pathmtu=%d "
+		  "rwnd=%u unack_data=%d",
+		  __entry->asoc, __entry->mark, __entry->bind_port,
+		  __entry->peer_port, __entry->pathmtu, __entry->rwnd,
+		  __entry->unack_data)
+);
+
+#endif /* _TRACE_SCTP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index bb00459d2d4d..878b2be7ce77 100644
--- a/include/trace/events/tcp.h
+++ b/include/trace/events/tcp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM tcp
 
@@ -8,6 +9,7 @@
 #include <linux/tcp.h>
 #include <linux/tracepoint.h>
 #include <net/ipv6.h>
+#include <net/tcp.h>
 
 #define TP_STORE_V4MAPPED(__entry, saddr, daddr)		\
 	do {							\
@@ -254,6 +256,64 @@ TRACE_EVENT(tcp_retransmit_synack,
 		  __entry->saddr_v6, __entry->daddr_v6)
 );
 
+#include <trace/events/net_probe_common.h>
+
+TRACE_EVENT(tcp_probe,
+
+	TP_PROTO(struct sock *sk, struct sk_buff *skb),
+
+	TP_ARGS(sk, skb),
+
+	TP_STRUCT__entry(
+		/* sockaddr_in6 is always bigger than sockaddr_in */
+		__array(__u8, saddr, sizeof(struct sockaddr_in6))
+		__array(__u8, daddr, sizeof(struct sockaddr_in6))
+		__field(__u16, sport)
+		__field(__u16, dport)
+		__field(__u32, mark)
+		__field(__u16, length)
+		__field(__u32, snd_nxt)
+		__field(__u32, snd_una)
+		__field(__u32, snd_cwnd)
+		__field(__u32, ssthresh)
+		__field(__u32, snd_wnd)
+		__field(__u32, srtt)
+		__field(__u32, rcv_wnd)
+	),
+
+	TP_fast_assign(
+		const struct tcp_sock *tp = tcp_sk(sk);
+		const struct inet_sock *inet = inet_sk(sk);
+
+		memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
+		memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
+
+		TP_STORE_ADDR_PORTS(__entry, inet, sk);
+
+		/* For filtering use */
+		__entry->sport = ntohs(inet->inet_sport);
+		__entry->dport = ntohs(inet->inet_dport);
+		__entry->mark = skb->mark;
+
+		__entry->length = skb->len;
+		__entry->snd_nxt = tp->snd_nxt;
+		__entry->snd_una = tp->snd_una;
+		__entry->snd_cwnd = tp->snd_cwnd;
+		__entry->snd_wnd = tp->snd_wnd;
+		__entry->rcv_wnd = tp->rcv_wnd;
+		__entry->ssthresh = tcp_current_ssthresh(sk);
+		__entry->srtt = tp->srtt_us >> 3;
+	),
+
+	TP_printk("src=%pISpc dest=%pISpc mark=%#x length=%d snd_nxt=%#x "
+		  "snd_una=%#x snd_cwnd=%u ssthresh=%u snd_wnd=%u srtt=%u "
+		  "rcv_wnd=%u",
+		  __entry->saddr, __entry->daddr, __entry->mark,
+		  __entry->length, __entry->snd_nxt, __entry->snd_una,
+		  __entry->snd_cwnd, __entry->ssthresh, __entry->snd_wnd,
+		  __entry->srtt, __entry->rcv_wnd)
+);
+
 #endif /* _TRACE_TCP_H */
 
 /* This part must be outside protection */