From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yx1-f74.google.com (mail-yx1-f74.google.com [74.125.224.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EA87739A05A for ; Wed, 4 Mar 2026 09:43:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.224.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772617402; cv=none; b=ZhNEaaIi/oG9ACenLzFmvE1wwztrwnFz+0r+OUyO24p97xWa9S7hnLBvjoamw+H7pD5zkHGrnECz3+hDyorqJZcj27HgVjmIIPyvNIulYMYme0nEt3voSBPV7mT6D7GDvTB6v8oxwe5I2VHH0y12FiJ3DE44Xrs8i2uqBpcwOsk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772617402; c=relaxed/simple; bh=R0uCK9WbpzHSEfbrqjG/qMQI25IjsDAb0fQJV8yYDoY=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=YECEjJa8pvyLwRRnObH8f4SCNoYC7rm/F07isf66hyg+RJJo8LLV3s6VXxmY9JjLZ3fI0BFzfW6zjNtFclWg7GAk/s3Wh1zb8kzVaDrr4hSudKyykGI3c9KKqjGG+eElYFoF/uHuxbWmeEXKb44xvSwOXwjLhtHcZNME6Ym3eeQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--edumazet.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Oxgpf30n; arc=none smtp.client-ip=74.125.224.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--edumazet.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Oxgpf30n" Received: by mail-yx1-f74.google.com with SMTP id 956f58d0204a3-64ca2fce86bso7817901d50.0 for ; Wed, 04 Mar 2026 01:43:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1772617400; x=1773222200; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=l8Uxe4MkiFK1BvC9hzWNs2GqCwXMfpiybl/gcG4/irI=; b=Oxgpf30nb0iAVDu7GtSGayVVa+7wrr4dkeXTa2ka6+TIy3HxIvoPRE4roL7o5y85gK dARJ4WgQjieoGyh4STu+C1c7Dgv36BobUwaFI5n0KSHNx8p/hN9Qh5/yLODUib7t+QgW zYeQ3+8PeF1rCDVlN5+u+je42y/KDy7qPM2o3sXszvgz+6+gtITv143q9+p6CilMkl1n 2rnZYATRTf0HZVP2jCPCJqET+0eW6ElR3KLFO6gh5rz0yV+No3vhqqXS1R66GPV50pMI jTk9Tdn1DNrW9nbl70M2rm8EJhru0QVTlCrN6UyZx8d1h7f7tJ++u0eM/Bui13wMSDf6 fHNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772617400; x=1773222200; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=l8Uxe4MkiFK1BvC9hzWNs2GqCwXMfpiybl/gcG4/irI=; b=jfJg+dSt/144Eg0gb7hs2ZSeQKC/9BmnNJCD1cbslUqhRw+oJqtENAh3BZGYUobMsZ 4TCA/Ba6LiuAOV30/DFje4cUjglc4hpCh2gLVdLxF5oLiDbOT0wYIPmuJl+SYIo6vD48 RkbQ7/Bnp5EA8+IlhYcJWqXfTg6qBUCs8gr6J+795f0aFEa40sWrxaAuF3zkR4rSUwfm V7Kllc7elS2siS8Rdt4DTaF8oH41IPfj1ZR/CZxra6LgaLXR96UMhwvVaJcdi/1oS7Ny 730j4/OJ7gH963bpRYuA06OUf9uhh7Syjpr83lrxmFRpX5usMqFamtsWMG0694dC41FV 96iQ== X-Forwarded-Encrypted: i=1; AJvYcCV54wlnn8UdQv2tUaP2dLWeuUsLN/8Sf0bxgyZ76D4OBl0eKXMHJhLe2qRr6JOIPLq9TLKr3Fs=@vger.kernel.org X-Gm-Message-State: AOJu0Ywge1h/4TK5rPKfr9Lf9ojMyHPw6kz03i5/kRhchcXMIp0Ijlac WEFUt+juupnlL/JnFWjcN0C6qWqvu5M0fHikxXwDSMm/caDdSzpz+erScj4kotnOO9NY/BQ5li9 dKVGA1DE2Qr4k4A== X-Received: from yxzt31.prod.google.com ([2002:a05:690e:16df:b0:64c:9ac0:70be]) (user=edumazet job=prod-delivery.src-stubby-dispatcher) by 2002:a53:864e:0:b0:64a:d6a2:c6a with SMTP id 956f58d0204a3-64cf9c1d63cmr838590d50.88.1772617399824; Wed, 04 Mar 2026 01:43:19 -0800 (PST) Date: Wed, 4 Mar 2026 09:43:18 +0000 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog Message-ID: <20260304094318.1769536-1-edumazet@google.com> Subject: [PATCH net-next] inet_diag: report delayed ack timer information From: Eric Dumazet To: "David S . Miller" , Jakub Kicinski , Paolo Abeni Cc: Simon Horman , Neal Cardwell , Kuniyuki Iwashima , David Ahern , netdev@vger.kernel.org, eric.dumazet@gmail.com, Eric Dumazet Content-Type: text/plain; charset="UTF-8" inet_sk_diag_fill() populates r->idiag_timer with the following precedence order: 1 - Retransmit timer. 4 - Probe0 timer. 2 - Keepalive timer. This patch adds a new value, last in the list, if other timers are not active. 5 - Delayed ACK timer. A corresponding iproute2 patch is needed to replace "unknown" with "delack": ESTAB 10 0 [2002:a05:6830:1f86::]:12875 [2002:a05:6830:1f85::]:50438 timer:(unknown,003ms,0) ino:152178 sk:3004 cgroup:unreachable:189 <-> skmem:(r1344,rb12780520,t0,tb262144,f2752,w0,o250,bl0,d0) ts usec_ts sack ecnseen bbr2s wscale:12,12 rto:10 rtt:4.073/0.205 ato:4 mss:4096 pmtu:5000 rcvmss:536 advmss:4096 cwnd:48 ssthresh:48 bytes_sent:288980 bytes_retrans:20 bytes_acked:288960 bytes_received:288970 segs_out:28986 segs_in:30626 data_segs_out:28898 data_segs_in:28897 bbr2:(bw:575Mbps,mrtt:0.049,bw_hi:1.48e+08Tbps,inflight_hi:48, extra_acked:1,mode:2,phase:PROBE_BW_UP,pacing_gain:1.25,cwnd_gain:2.25) send 386Mbps lastsnd:5 lastrcv:1 lastack:1 pacing_rate 711Mbps delivery_rate 575Mbps delivered:28898 app_limited busy:91010ms retrans:0/2 dsack_dups:1 rcv_rtt:151640 rcv_space:266250 rcv_ssthresh:265904 minrtt:0.049 snd_wnd:270336 rcv_wnd:266240 rehash:1 Signed-off-by: Eric Dumazet --- net/ipv4/inet_diag.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 9d215485b5c7e7ba29dd53c924f0245439d74af5..e4cb18061aefcc22df04644c00bf5c7db4e150d2 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -298,6 +298,10 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, r->idiag_retrans = READ_ONCE(icsk->icsk_probes_out); r->idiag_expires = jiffies_delta_to_msecs(icsk->icsk_keepalive_timer.expires - jiffies); + } else if (timer_pending(&icsk->icsk_delack_timer)) { + r->idiag_timer = 5; + r->idiag_expires = + jiffies_delta_to_msecs(icsk_delack_timeout(icsk) - jiffies); } if ((ext & (1 << (INET_DIAG_INFO - 1))) && handler->idiag_info_size) { -- 2.53.0.473.g4a7958ca14-goog