From nobody Fri Jan 9 01:29:22 2026 Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) (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 213012737F6 for ; Sun, 4 Jan 2026 18:41:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767552116; cv=none; b=fPZcZspsKPJQeY7SluBL6ibiIbsSdmbtYtzI/FHKHcHB+bjQIS6618nS9yg4yNivBaocCAHC/6mNlBAbpfImi7S7/1acjWPq8e1+ERrHO1nPUKzobiTPsV7yE6lY6WMhemqtZRtZnzB6Vnb9Yhk62xmV0HzGFdWevWY9dFYHYrY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767552116; c=relaxed/simple; bh=oZlSrKc5HSf8OTgk8Y9zCO1ND/6B7m7anVTBiZTQDCE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JP5vx1ug/BvgdCIaKdeRH1TYg8wiMXBKqsii/+Ur8rAaEdIIuMTN7RMUbcKcL8W3Mm4lyksreDdvkK6wW+hhFFw8HAr5eiZSpO2bxJ3fpXOAKBcmtwXKWYLwsMurWByItrAHO7jwFJIp9XFDaTejMi2QIJmqb7yolfMGGeRm6k4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=jtckQmtq; arc=none smtp.client-ip=209.85.214.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="jtckQmtq" Received: by mail-pl1-f169.google.com with SMTP id d9443c01a7336-2a0d52768ccso166613445ad.1 for ; Sun, 04 Jan 2026 10:41:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1767552113; x=1768156913; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=J4d7URFdeCPYu3U6zdfTOnUzmMHd/kT6rS033v+6Sa8=; b=jtckQmtq+Z0flE/4z9TctNvX9W9LWLunJWaNZjTtukk+oNHZfnwiUiDy8aFq1Lodin abW8vXQwIBx/6IFCeqO73GdkEWfdna1tto32eniSu50sS3b3UG/+bARuvPrCeoWFEZIZ /TByR3xbQvRIbejFJ734q5VpyY+OLVgGK72IXQYHNJOKfF61THsLN2RCJwwX4+oLqidD 5lqU76x4TVbqVhAtH9j1CIpY5IfdSkzeVpvrkE9GIWmyKvkFXotcyeJUolpdNwPSndDf qozu1y5wZtwQ0JYZXVJjVGRNwzoQNO9Ht3FkmSQAB1sIvUM289+WrPKr9ikvapI0GXiN uRFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767552113; x=1768156913; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=J4d7URFdeCPYu3U6zdfTOnUzmMHd/kT6rS033v+6Sa8=; b=Fef4lA0L7wSKG9JfHQYe5n1oKx1KREQ80jM9rb8B7HEAITaiCPZdh8cehpP/NYTIfV Oa2iT4Q4m+RJrB4tztksZ2YqNz5r646WQXEyO3rtgv0g7j/sZX+J9xxxguYx/yRYWWix 2wNcWWkV90UO1pPSfrWuT9fnD4ga11/fEGOyEdvZ2CjqboHE6XnD+ZBz0XgacFMf2XQm RWSU8fYsuIrJ+ejYnlm1L+WTpMc43hZz8YI3sAZ/65VtLxSJ3C6W3NnfX6FLlpwf/iEN ag6ZXLgqwTQjY+ZpJUM1b21ZtkDY6TQUEyNnbRFpVY0gjTGzlSzVCQBx814+DOfVfCJb yp1w== X-Forwarded-Encrypted: i=1; AJvYcCXjo8p+fAXP6lRVOprRZGYNIJA990d6VqrpZhVSfp+K8qGOqQ3LFDqKk85HJbwqokocbfAPAEzNyoEImds=@vger.kernel.org X-Gm-Message-State: AOJu0YzCm+N4yjE+dsIm1N1kVzvW+bPcYn6P6/avr3/PvYMyK96tbHOV JJ6+27ZW8hA2NiVdp8K82kNjfpWmR/yBFOEarUCoDtMLO02nYsesTifxqli+HFeg X-Gm-Gg: AY/fxX4GNbvPB73cIUneuyd50/h2avvH4Pkb3c6ou8t3K0yzytle1BErUFYyTKW/rEF zpPZJe8Jy6D66EXa3lk7hqXB5FaBy6R9nWw7F52eVnHG0n3+mi9zeBag9r73hSlwZRKekIpnt2Z 6qMwopOy2h2g5QL1qHrnJKC4phpW0InNPWZPMiHBDzdpEeBjes8xJ/DzzgBxipEPjQaoJUERLy5 w+8KrSXcJWMr7YxtSW4JGn8t92uXehJOpz29dnJjJDbye4yEU/cODvaqO00c13g6J8A5WX9pTMq +KLDoktuPt7pcNYsJwokQkhDskh79eAzUyAThv4Ihh7vPKhx7/6dh9adoN/nAKVuBG7QuRrmkWY YqHrkucbU9jzIMsdHQcHtzZUG/3NjR2PGY3duU4EKyObYNt/eve2zj955VHBKm/QRhSKZxyMP6P TZFhHUyH6gc3x9hNa+ X-Google-Smtp-Source: AGHT+IEQqPsuEeqSwJnEmQG6HRSkHTjK4rOFxwa+Org4QKZJRNkBh+LEQ9iqbFn0O6b3i5bQUEEUxw== X-Received: by 2002:a05:7022:f307:b0:11d:ef84:6cff with SMTP id a92af1059eb24-12172308947mr41968866c88.37.1767552113327; Sun, 04 Jan 2026 10:41:53 -0800 (PST) Received: from [192.168.15.94] ([179.181.255.35]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1217254c734sm170975553c88.13.2026.01.04.10.41.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Jan 2026 10:41:52 -0800 (PST) From: Andre Carvalho Date: Sun, 04 Jan 2026 18:41:13 +0000 Subject: [PATCH net-next v9 3/6] netconsole: add STATE_DEACTIVATED to track targets disabled by low level Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260104-netcons-retrigger-v9-3-38aa643d2283@gmail.com> References: <20260104-netcons-retrigger-v9-0-38aa643d2283@gmail.com> In-Reply-To: <20260104-netcons-retrigger-v9-0-38aa643d2283@gmail.com> To: Breno Leitao , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Simon Horman Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Andre Carvalho X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1767552086; l=2409; i=asantostc@gmail.com; s=20250807; h=from:subject:message-id; bh=Bc0ee9DYK1oiSRrahxYGeDv2Y4gYudwUsG3FQq7nt2Y=; b=9BWcXu9Fg7r9j3L7E5V0TBCP14D0o6QF69OAWDX50MoYWCkS/CfIzLkCaOhni/6GXsEDKlWxP g+k4/TDEhnfCR/UNaLWnaqv7wSY6dpVpZqpB15KHJCnGq5BdslcaI/M X-Developer-Key: i=asantostc@gmail.com; a=ed25519; pk=eWre+RwFHCxkiaQrZLsjC67mZ/pZnzSM/f7/+yFXY4Q= From: Breno Leitao When the low level interface brings a netconsole target down, record this using a new STATE_DEACTIVATED state. This allows netconsole to distinguish between targets explicitly disabled by users and those deactivated due to interface state changes. It also enables automatic recovery and re-enabling of targets if the underlying low-level interfaces come back online. From a code perspective, anything that is not STATE_ENABLED is disabled. Devices (de)enslaving are marked STATE_DISABLED to prevent automatically resuming as enslaved interfaces cannot have netconsole enabled. Signed-off-by: Breno Leitao Signed-off-by: Andre Carvalho --- drivers/net/netconsole.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index b21ecea60d52..7a1e5559fc0d 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -122,6 +122,7 @@ enum sysdata_feature { enum target_state { STATE_DISABLED, STATE_ENABLED, + STATE_DEACTIVATED, }; =20 /** @@ -580,6 +581,14 @@ static ssize_t enabled_store(struct config_item *item, if (ret) goto out_unlock; =20 + /* When the user explicitly enables or disables a target that is + * currently deactivated, reset its state to disabled. The DEACTIVATED + * state only tracks interface-driven deactivation and should _not_ + * persist when the user manually changes the target's enabled state. + */ + if (nt->state =3D=3D STATE_DEACTIVATED) + nt->state =3D STATE_DISABLED; + ret =3D -EINVAL; current_enabled =3D nt->state =3D=3D STATE_ENABLED; if (enabled =3D=3D current_enabled) { @@ -1445,10 +1454,19 @@ static int netconsole_netdev_event(struct notifier_= block *this, break; case NETDEV_RELEASE: case NETDEV_JOIN: - case NETDEV_UNREGISTER: + /* transition target to DISABLED instead of + * DEACTIVATED when (de)enslaving devices as + * their targets should not be automatically + * resumed when the interface is brought up. + */ nt->state =3D STATE_DISABLED; list_move(&nt->list, &target_cleanup_list); stopped =3D true; + break; + case NETDEV_UNREGISTER: + nt->state =3D STATE_DEACTIVATED; + list_move(&nt->list, &target_cleanup_list); + stopped =3D true; } } netconsole_target_put(nt); --=20 2.52.0