diff mbox series

[net-next,v3,1/3] trace: adjust TP_STORE_ADDR_PORTS_SKB() parameters

Message ID 20240329034243.7929-2-kerneljasonxing@gmail.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series tcp: make trace of reset logic complete | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 967 this patch: 967
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 957 this patch: 957
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 978 this patch: 978
netdev/checkpatch warning CHECK: Macro argument 'skb' may be better as '(skb)' to avoid precedence issues
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Jason Xing March 29, 2024, 3:42 a.m. UTC 
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(-)

Comments

Eric Dumazet March 29, 2024, 8:49 a.m. UTC | #1 
On Fri, Mar 29, 2024 at 4:43 AM Jason Xing <kerneljasonxing@gmail.com> wrote:
>
> 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>

Reviewed-by: Eric Dumazet <edumazet@google.com>
diff mbox series

Patch

diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index 3c08a0846c47..194425f69642 100644
--- a/include/trace/events/tcp.h
+++ b/include/trace/events/tcp.h
@@ -273,15 +273,15 @@  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;		\
@@ -289,29 +289,30 @@  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
 
@@ -336,7 +337,7 @@  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",