From: Breno Leitao <leitao@debian.org>
To: David Ahern <dsahern@kernel.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>,
	David Ahern <dsahern@kernel.org>,
	 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,
	Breno Leitao <leitao@debian.org>,
	 kernel-team@meta.com
Subject: [PATCH net-next v3 1/2] net: pass const to msg_data_left()
Date: Tue, 08 Apr 2025 11:32:01 -0700	[thread overview]
Message-ID: <20250408-tcpsendmsg-v3-1-208b87064c28@debian.org> (raw)
In-Reply-To: <20250408-tcpsendmsg-v3-0-208b87064c28@debian.org>

The msg_data_left() function doesn't modify the struct msghdr parameter,
so mark it as const. This allows the function to be used with const
references, improving type safety and making the API more flexible.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
---
 include/linux/socket.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/socket.h b/include/linux/socket.h
index c3322eb3d6865..3b262487ec060 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -168,7 +168,7 @@ static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr
 	return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
 }
 
-static inline size_t msg_data_left(struct msghdr *msg)
+static inline size_t msg_data_left(const struct msghdr *msg)
 {
 	return iov_iter_count(&msg->msg_iter);
 }

-- 
2.47.1

next prev parent reply	other threads:[~2025-04-08 18:32 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 ` Breno Leitao [this message]
2025-04-08 18:32 ` [PATCH net-next v3 2/2] trace: tcp: Add " Breno Leitao
2025-04-08 19:32   ` David Ahern
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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