From patchwork Fri Apr 5 13:06:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthieu Baerts (NGI0)" X-Patchwork-Id: 13619045 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9698E16D4F1; Fri, 5 Apr 2024 13:06:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712322399; cv=none; b=R47BxTbMggZEnUOsoezXNDdxKdpxuEDW4lIOKVe4fl6MZdz7ShsE6BtdACwGk3FmpvvVQhVwtFjNHXbAYEWqV5fPg0mdWyQrZVUVAHuMm7THp5Ix06xaUeLD8MvIFMkY03pDrNk4/+8+m3rzT9vvT+h8qH/fvp/OQgB+EhR5lM0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712322399; c=relaxed/simple; bh=1j3hW9YAEW484MOqJDnQae4PhbxqhnhN/Z1nRM6/His=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=taqSSemFaTK2YsWIgiLBgmhrtJvpfNRjrCI4zC0XgBwlio/Qw5AwIrSUoFbYUTZJyqy9fQdHU4U1Nq+GYK8kcWu+7y0vdbH9fE7xw44g0SpjAOnMKlvVXAmf32ZOzT6252EA03nBtXr4PrJ/DqH45MVsABaRACbzrwqkwme4jWM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e1Hoj24J; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="e1Hoj24J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E10FC433C7; Fri, 5 Apr 2024 13:06:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712322399; bh=1j3hW9YAEW484MOqJDnQae4PhbxqhnhN/Z1nRM6/His=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=e1Hoj24JvzvkJutMHOhlkTnSDViBOqWCtSoacbzNispGSZvXymRht49DMk2HSz5wt Kh73QTOuBfy36l1xtaALQ7mfYnJT65KJ9aWB0eBrGWTT93qInE96IBgkt0P56gG2tm 9OWKuVVbEAk8RGCbitxOglnuGA/lp7YKSu0FpQl4I+K+plDNVcVwGqYBXXmd+mXOUY 7hLi5Ycas98l0Mxwd/T7+7yXFKvDgMN1Ybp0wQRQD9D0t2vUw4N2y1uDtjPvURVFtW 3yG6RHO3/Zgu3lLFyqaStYazCDUNRcy++kiKzxudjls4FeYSI4rdcizmaaGJ+S6X2D efdXDCbJ/UEJQ== From: "Matthieu Baerts (NGI0)" Date: Fri, 05 Apr 2024 15:06:21 +0200 Subject: [PATCH net-next 1/2] mptcp: add last time fields in mptcp_info Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240405-upstream-net-next-20240405-mptcp-last-time-info-v1-1-52dc49453649@kernel.org> References: <20240405-upstream-net-next-20240405-mptcp-last-time-info-v1-0-52dc49453649@kernel.org> In-Reply-To: <20240405-upstream-net-next-20240405-mptcp-last-time-info-v1-0-52dc49453649@kernel.org> To: mptcp@lists.linux.dev, Mat Martineau , Geliang Tang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, "Matthieu Baerts (NGI0)" , Geliang Tang X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=4848; i=matttbe@kernel.org; h=from:subject:message-id; bh=648syyUDg04+UEijLZ/0zq6tkZDYCTtkOW9fCgS5UZI=; b=owEBbQKS/ZANAwAIAfa3gk9CaaBzAcsmYgBmD/dYvb88pQACCDDSa2iZSLWuhLOGJnuYjBQqP ZOVB4woMIyJAjMEAAEIAB0WIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZg/3WAAKCRD2t4JPQmmg c0XsD/9PY5SESZduyV3fPr/FNouKfQv+pzP8Y99J8UrQiXin17r6re0rykZFsIkAW/iAmzY7HPd OPGk75Zn8TcrhsyJK/gmbaZyh9m5aOUSZehUDoWkIG4geRodjdlLr2uuj3XyqKvtd8VsYCnFSo1 MgqcameFq+sc4qb1evsmMwvTrLJIzQxh4G6YaIoCygu3e3TVJLi0p3+0/yBUaWohniGx4fIHDWq Oxsn257UBMC2jpeMfHdNOP+/M+uiI57FPz82RnTkddjV4mz3o5/k+sQnz99CQfdMVcI+SRYBy1Q 2ytXBRiMhaRnux/yJz9mCYmCcbRJF9UhWkuu5OjHUV7DBmKboeJxOJu6Qc/+9hCFUPd7A3Ibgfn 7bDWuXG5F45S9lSRFvbMo3l1JGpN/I52I0n4bBxGCh3Yv+L6MKoPpEAX/G8aQp+xbohJKDkUfyI G4hMrXTJdkxtR6k9lAGSSf9FF0Wv6QtXw9gnCgTKneCjvwpBIST1h6UJ+QO93ije/FkotiwMmC+ uwxud8ATuM9qM38ZGME5Ml4zwsbPNrtLfx4hLcwjTCG0bmcUoqHmwTc61R//fEH521a2OCwQgqT F3ex7Nln3yzlPI6lrNGWlL04FaU0lDy/dlvf9Z8MW2qYBNd6gtA819hX5wNl602PeNqRTq0T7RK 9KwaJEn9RHaxdlw== X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 From: Geliang Tang This patch adds "last time" fields last_data_sent, last_data_recv and last_ack_recv in struct mptcp_sock to record the last time data_sent, data_recv and ack_recv happened. They all are initialized as tcp_jiffies32 in __mptcp_init_sock(), and updated as tcp_jiffies32 too when data is sent in __subflow_push_pending(), data is received in __mptcp_move_skbs_from_subflow(), and ack is received in ack_update_msk(). Similar to tcpi_last_data_sent, tcpi_last_data_recv and tcpi_last_ack_recv exposed with TCP, this patch exposes the last time "an action happened" for MPTCP in mptcp_info, named mptcpi_last_data_sent, mptcpi_last_data_recv and mptcpi_last_ack_recv, calculated in mptcp_diag_fill_info() as the time deltas between now and the newly added last time fields in mptcp_sock. Also add three reserved bytes in struct mptcp_info not to have holes in this structure exposed to userspace. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/446 Signed-off-by: Geliang Tang Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) --- include/uapi/linux/mptcp.h | 4 ++++ net/mptcp/options.c | 1 + net/mptcp/protocol.c | 7 +++++++ net/mptcp/protocol.h | 3 +++ net/mptcp/sockopt.c | 4 ++++ 5 files changed, 19 insertions(+) diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h index 74cfe496891e..67d015df8893 100644 --- a/include/uapi/linux/mptcp.h +++ b/include/uapi/linux/mptcp.h @@ -58,6 +58,10 @@ struct mptcp_info { __u64 mptcpi_bytes_received; __u64 mptcpi_bytes_acked; __u8 mptcpi_subflows_total; + __u8 reserved[3]; + __u32 mptcpi_last_data_sent; + __u32 mptcpi_last_data_recv; + __u32 mptcpi_last_ack_recv; }; /* MPTCP Reset reason codes, rfc8684 */ diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 27ca42c77b02..8e8dcfbc2993 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1068,6 +1068,7 @@ static void ack_update_msk(struct mptcp_sock *msk, __mptcp_snd_una_update(msk, new_snd_una); __mptcp_data_acked(sk); } + msk->last_ack_recv = tcp_jiffies32; mptcp_data_unlock(sk); trace_ack_update_msk(mp_opt->data_ack, diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 7e74b812e366..6c1af0155bb0 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -706,6 +706,8 @@ static bool __mptcp_move_skbs_from_subflow(struct mptcp_sock *msk, } } while (more_data_avail); + if (moved > 0) + msk->last_data_recv = tcp_jiffies32; *bytes += moved; return done; } @@ -1556,6 +1558,8 @@ static int __subflow_push_pending(struct sock *sk, struct sock *ssk, err = copied; out: + if (err > 0) + msk->last_data_sent = tcp_jiffies32; return err; } @@ -2793,6 +2797,9 @@ static void __mptcp_init_sock(struct sock *sk) WRITE_ONCE(msk->allow_infinite_fallback, true); msk->recovery = false; msk->subflow_id = 1; + msk->last_data_sent = tcp_jiffies32; + msk->last_data_recv = tcp_jiffies32; + msk->last_ack_recv = tcp_jiffies32; mptcp_pm_data_init(msk); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 46f4655b7123..fdfa843e2d88 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -282,6 +282,9 @@ struct mptcp_sock { u64 bytes_acked; u64 snd_una; u64 wnd_end; + u32 last_data_sent; + u32 last_data_recv; + u32 last_ack_recv; unsigned long timer_ival; u32 token; int rmem_released; diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 73fdf423de44..2ec2fdf9f4af 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -896,6 +896,7 @@ static int mptcp_getsockopt_first_sf_only(struct mptcp_sock *msk, int level, int void mptcp_diag_fill_info(struct mptcp_sock *msk, struct mptcp_info *info) { struct sock *sk = (struct sock *)msk; + u32 now = tcp_jiffies32; u32 flags = 0; bool slow; @@ -930,6 +931,7 @@ void mptcp_diag_fill_info(struct mptcp_sock *msk, struct mptcp_info *info) info->mptcpi_snd_una = msk->snd_una; info->mptcpi_rcv_nxt = msk->ack_seq; info->mptcpi_bytes_acked = msk->bytes_acked; + info->mptcpi_last_ack_recv = jiffies_to_msecs(now - msk->last_ack_recv); mptcp_data_unlock(sk); slow = lock_sock_fast(sk); @@ -942,6 +944,8 @@ void mptcp_diag_fill_info(struct mptcp_sock *msk, struct mptcp_info *info) info->mptcpi_bytes_retrans = msk->bytes_retrans; info->mptcpi_subflows_total = info->mptcpi_subflows + __mptcp_has_initial_subflow(msk); + info->mptcpi_last_data_sent = jiffies_to_msecs(now - msk->last_data_sent); + info->mptcpi_last_data_recv = jiffies_to_msecs(now - msk->last_data_recv); unlock_sock_fast(sk, slow); } EXPORT_SYMBOL_GPL(mptcp_diag_fill_info);