[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <394f9d55197681e910d104dbd35e62fb4098712b.1711361723.git.balazs.scheidler@axoflow.com>
Date: Mon, 25 Mar 2024 11:29:17 +0100
From: Balazs Scheidler <bazsi77@...il.com>
To: kerneljasonxing@...il.com,
kuniyu@...zon.com,
netdev@...r.kernel.org,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Balazs Scheidler <balazs.scheidler@...flow.com>,
linux-kernel@...r.kernel.org,
linux-trace-kernel@...r.kernel.org
Subject: [PATCH net-next v3 1/2] net: port TP_STORE_ADDR_PORTS_SKB macro to be tcp/udp independent
This patch moves TP_STORE_ADDR_PORTS_SKB() to a common header and removes
the TCP specific implementation details.
Previously the macro assumed the skb passed as an argument is a
TCP packet, the implementation now uses an argument to the L4 header and
uses that to extract the source/destination ports, which happen
to be named the same in "struct tcphdr" and "struct udphdr"
Signed-off-by: Balazs Scheidler <balazs.scheidler@...flow.com>
---
include/trace/events/net_probe_common.h | 41 ++++++++++++++++++++++
include/trace/events/tcp.h | 45 ++-----------------------
2 files changed, 43 insertions(+), 43 deletions(-)
diff --git a/include/trace/events/net_probe_common.h b/include/trace/events/net_probe_common.h
index 3930119cab08..50c083b5687d 100644
--- a/include/trace/events/net_probe_common.h
+++ b/include/trace/events/net_probe_common.h
@@ -41,4 +41,45 @@
#endif
+#define TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb, protoh) \
+ do { \
+ struct sockaddr_in *v4 = (void *)__entry->saddr; \
+ \
+ v4->sin_family = AF_INET; \
+ v4->sin_port = protoh->source; \
+ v4->sin_addr.s_addr = ip_hdr(skb)->saddr; \
+ v4 = (void *)__entry->daddr; \
+ v4->sin_family = AF_INET; \
+ v4->sin_port = protoh->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, protoh) \
+ do { \
+ const struct iphdr *iph = ip_hdr(skb); \
+ \
+ if (iph->version == 6) { \
+ struct sockaddr_in6 *v6 = (void *)__entry->saddr; \
+ \
+ v6->sin6_family = AF_INET6; \
+ v6->sin6_port = protoh->source; \
+ v6->sin6_addr = ipv6_hdr(skb)->saddr; \
+ v6 = (void *)__entry->daddr; \
+ v6->sin6_family = AF_INET6; \
+ v6->sin6_port = protoh->dest; \
+ v6->sin6_addr = ipv6_hdr(skb)->daddr; \
+ } else \
+ TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb, protoh); \
+ } while (0)
+
+#else
+
+#define TP_STORE_ADDR_PORTS_SKB(__entry, skb, protoh) \
+ TP_STORE_ADDR_PORTS_SKB_V4(__entry, skb, protoh)
+
+#endif
+
+
#endif
diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index 699dafd204ea..5f19c5c6cda8 100644
--- a/include/trace/events/tcp.h
+++ b/include/trace/events/tcp.h
@@ -302,48 +302,6 @@ 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 +318,13 @@ 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(__entry, skb, th);
),
TP_printk("skbaddr=%p src=%pISpc dest=%pISpc",
--
2.40.1
Powered by blists - more mailing lists