From: David Ahern <dsahern@kernel.org>
To: Breno Leitao <leitao@debian.org>,
Eric Dumazet <edumazet@google.com>,
Neal Cardwell <ncardwell@google.com>,
Kuniyuki Iwashima <kuniyu@amazon.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>
Cc: Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org, kernel-team@meta.com
Subject: Re: [PATCH net-next v3 2/2] trace: tcp: Add tracepoint for tcp_sendmsg_locked()
Date: Tue, 8 Apr 2025 13:32:32 -0600 [thread overview]
Message-ID: <fcf2d508-d44e-43c3-b381-8f33fec11859@kernel.org> (raw)
In-Reply-To: <20250408-tcpsendmsg-v3-2-208b87064c28@debian.org>
On 4/8/25 12:32 PM, Breno Leitao wrote:
> Add a tracepoint to monitor TCP send operations, enabling detailed
> visibility into TCP message transmission.
>
> Create a new tracepoint within the tcp_sendmsg_locked function,
> capturing traditional fields along with size_goal, which indicates the
> optimal data size for a single TCP segment. Additionally, a reference to
> the struct sock sk is passed, allowing direct access for BPF programs.
> The implementation is largely based on David's patch[1] and suggestions.
>
> Link: https://lore.kernel.org/all/70168c8f-bf52-4279-b4c4-be64527aa1ac@kernel.org/ [1]
> Signed-off-by: Breno Leitao <leitao@debian.org>
> ---
> include/trace/events/tcp.h | 24 ++++++++++++++++++++++++
> kernel/bpf/btf.c | 1 +
> net/ipv4/tcp.c | 2 ++
> 3 files changed, 27 insertions(+)
>
Reviewed-by: David Ahern <dsahern@kernel.org>
next prev parent reply other threads:[~2025-04-08 19:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-08 18:32 [PATCH net-next v3 0/2] trace: add tracepoint for tcp_sendmsg_locked() Breno Leitao
2025-04-08 18:32 ` [PATCH net-next v3 1/2] net: pass const to msg_data_left() Breno Leitao
2025-04-08 18:32 ` [PATCH net-next v3 2/2] trace: tcp: Add tracepoint for tcp_sendmsg_locked() Breno Leitao
2025-04-08 19:32 ` David Ahern [this message]
2025-04-08 20:54 ` Kuniyuki Iwashima
2025-04-09 7:13 ` Eric Dumazet
2025-04-11 2:20 ` [PATCH net-next v3 0/2] trace: add " patchwork-bot+netdevbpf
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