netdev - Re: [PATCH net-next v3 2/2] trace: tcp: Add tracepoint for tcp_sendmsg

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Message-ID: <20250408205417.84283-1-kuniyu@amazon.com>
Date: Tue, 8 Apr 2025 13:54:13 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <leitao@...ian.org>
CC: <davem@...emloft.net>, <dsahern@...nel.org>, <edumazet@...gle.com>,
	<horms@...nel.org>, <kernel-team@...a.com>, <kuba@...nel.org>,
	<kuniyu@...zon.com>, <linux-kernel@...r.kernel.org>,
	<linux-trace-kernel@...r.kernel.org>, <mathieu.desnoyers@...icios.com>,
	<mhiramat@...nel.org>, <ncardwell@...gle.com>, <netdev@...r.kernel.org>,
	<pabeni@...hat.com>, <rostedt@...dmis.org>, <song@...nel.org>,
	<yonghong.song@...ux.dev>
Subject: Re: [PATCH net-next v3 2/2] trace: tcp: Add tracepoint for tcp_sendmsg_locked()

From: Breno Leitao <leitao@...ian.org>
Date: Tue, 08 Apr 2025 11:32:02 -0700
> 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@...ian.org>

Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>