All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jason Xing <kerneljasonxing@gmail.com>
To: edumazet@google.com, mhiramat@kernel.org,
	mathieu.desnoyers@efficios.com, rostedt@goodmis.org,
	kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net
Cc: netdev@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
	kerneljasonxing@gmail.com, Jason Xing <kernelxing@tencent.com>
Subject: [PATCH net-next v2 1/3] trace: adjust TP_STORE_ADDR_PORTS_SKB() parameters
Date: Mon, 25 Mar 2024 14:28:29 +0800	[thread overview]
Message-ID: <20240325062831.48675-2-kerneljasonxing@gmail.com> (raw)
In-Reply-To: <20240325062831.48675-1-kerneljasonxing@gmail.com>

From: Jason Xing <kernelxing@tencent.com>

Introducing entry_saddr and entry_daddr parameters in this macro
for later use can help us record the reverse 4-tuple by analyzing
the 4-tuple of the incoming skb when receiving.

Signed-off-by: Jason Xing <kernelxing@tencent.com>
---
 include/trace/events/tcp.h | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index 699dafd204ea..2495a1d579be 100644
--- a/include/trace/events/tcp.h
+++ b/include/trace/events/tcp.h
@@ -302,15 +302,15 @@ TRACE_EVENT(tcp_probe,
 		  __entry->skbaddr, __entry->skaddr)
 );
 
-#define TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb)			\
+#define TP_STORE_ADDR_PORTS_SKB_V4(skb, entry_saddr, entry_daddr)	\
 	do {								\
 		const struct tcphdr *th = (const struct tcphdr *)skb->data; \
-		struct sockaddr_in *v4 = (void *)__entry->saddr;	\
+		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 = (void *)entry_daddr;				\
 		v4->sin_family = AF_INET;				\
 		v4->sin_port = th->dest;				\
 		v4->sin_addr.s_addr = ip_hdr(skb)->daddr;		\
@@ -318,29 +318,30 @@ TRACE_EVENT(tcp_probe,
 
 #if IS_ENABLED(CONFIG_IPV6)
 
-#define TP_STORE_ADDR_PORTS_SKB(__entry, skb)				\
+#define TP_STORE_ADDR_PORTS_SKB(skb, entry_saddr, entry_daddr)		\
 	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; \
+			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 = (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);	\
+			TP_STORE_ADDR_PORTS_SKB_V4(skb, entry_saddr,	\
+						   entry_daddr); \
 	} while (0)
 
 #else
 
-#define TP_STORE_ADDR_PORTS_SKB(__entry, skb)		\
-	TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb)
+#define TP_STORE_ADDR_PORTS_SKB(skb, entry_saddr, entry_daddr)		\
+	TP_STORE_ADDR_PORTS_SKB_V4(skb, entry_saddr, entry_daddr)
 
 #endif
 
@@ -365,7 +366,7 @@ DECLARE_EVENT_CLASS(tcp_event_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, __entry->saddr, __entry->daddr);
 	),
 
 	TP_printk("skbaddr=%p src=%pISpc dest=%pISpc",
-- 
2.37.3


  reply	other threads:[~2024-03-25  6:28 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-25  6:28 [PATCH net-next v2 0/3] tcp: make trace of reset logic complete Jason Xing
2024-03-25  6:28 ` Jason Xing [this message]
2024-03-25  6:28 ` [PATCH net-next v2 2/3] trace: tcp: fully support trace_tcp_send_reset Jason Xing
2024-03-25  6:28 ` [PATCH net-next v2 3/3] tcp: add location into reset trace process Jason Xing
2024-03-26 11:08   ` Paolo Abeni
2024-03-29  1:15     ` Jakub Kicinski
2024-03-29  2:53       ` Jason Xing
2024-03-26  1:30 ` [PATCH net-next v2 0/3] tcp: make trace of reset logic complete Jakub Kicinski
2024-03-26  2:13   ` Jason Xing
2024-03-26  2:23     ` Jakub Kicinski
2024-03-26  2:33       ` Jason Xing

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20240325062831.48675-2-kerneljasonxing@gmail.com \
    --to=kerneljasonxing@gmail.com \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=kernelxing@tencent.com \
    --cc=kuba@kernel.org \
    --cc=linux-trace-kernel@vger.kernel.org \
    --cc=mathieu.desnoyers@efficios.com \
    --cc=mhiramat@kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    --cc=rostedt@goodmis.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.