From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) (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 489131C1F3E for ; Tue, 19 Nov 2024 23:37:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732059428; cv=none; b=C+6CDHjkKDc1dmEzPC1Y+csHWWMRC/dBp4SZ/7+0Le7UQ40AZbV4PZPogkPUq/LPjPqE+M27GL53zrT/fevEy8CYy2iYqcpd78mkbbm8va/4fP8cnHqH7aY3r/2sNcVVMynNZe6vysfK+2YuI2s4RwGlY7YIpEIVYOhOiyQi2uw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732059428; c=relaxed/simple; bh=/swf9q8NqGzV7B25Ud3BkoIkR9ditRL6tHChJjVFoMI=; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type; b=WiMvRGzmr66iW708d/Xixs2oc1yryJRsjmoHz3TtuIXN5gE86OVNh1uY2GFmPHdWRWWtyw7ENVnDt8kObRsMw0I/WOGAa9mJRc1VOcr3Zoe3DxC2q1sSeDMSkuyLUfgbdY5nlE6HkKm6oxdZ2IXhnM+qy8FJiKRSkNeyQIjsEM4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=networkplumber.org; spf=pass smtp.mailfrom=networkplumber.org; dkim=pass (2048-bit key) header.d=networkplumber-org.20230601.gappssmtp.com header.i=@networkplumber-org.20230601.gappssmtp.com header.b=tq6dnEF+; arc=none smtp.client-ip=209.85.214.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=networkplumber.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=networkplumber.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=networkplumber-org.20230601.gappssmtp.com header.i=@networkplumber-org.20230601.gappssmtp.com header.b="tq6dnEF+" Received: by mail-pl1-f171.google.com with SMTP id d9443c01a7336-2120f9ec28eso2250575ad.1 for ; Tue, 19 Nov 2024 15:37:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1732059425; x=1732664225; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:subject:to:from :date:from:to:cc:subject:date:message-id:reply-to; bh=lflGtFBZOncIuPvyuFUckj2pqdTcL3PV1J2DgX4SNKE=; b=tq6dnEF+w2fhhiSK/3Rau60USzjhg8788dmRHRRsUyiENrwTjAM4w3mgzDNvIn5Wc5 wOlxSAOiAtQIzlug377o42Zf8TWUsi9Lur/kwD2Ml2FH+T1fDGXHqFKvkNxLVmPVDGT5 PGa27aoKrsyfD0xzRqk6AEPouyEL6ehYSqUBuDOslAwPJqNog0Rj94hn0IfIJpnvxu1+ /zdmIIF9JevQz9RXrGQDc9UQzpTlhhziNhC60M8w+CH8ug2qlJqCvxxvdFu5Epnr1+BZ RkRQVsy8HYuUSR+PaCYRZZ0iJ6JC/hdmvUIPDsZ3MwFG7g0s9hfJkHzBxaG9vEPGEpBX 3tNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732059425; x=1732664225; h=content-transfer-encoding:mime-version:message-id:subject:to:from :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=lflGtFBZOncIuPvyuFUckj2pqdTcL3PV1J2DgX4SNKE=; b=tFCKyiebF4wy1A2rJjSCpPIyA1AHqMZC6gxhiT4r4Gae1YafcbyFJ+DuJA4tPytIPG gTshSjdTyK8vN3Frdcc521RDvnYK62d+iRUUn2GYa3lnB9BxuPWM4QcxpPWqrup4lR9p x9cqutm7GnElb1Hk416sw63sp59zOky+MYx6A6mc0BRDyeaLL6fOszZE6gYzj0PXPFUv Xy9zljPccIA7T7UNh6lF1nLdbRO8quqoaXIj0Wv6+x3j9Weqjsp8ENvqhifQFgOF7n0c dC6JqZTSYEs02GpVZnJbIeTZwwu/zmKbqKerh6FfVcxxfXt4jBo/noxhqypeh6T92ROv 3XAw== X-Gm-Message-State: AOJu0YybZ6Yj6sXMBX0SMFHT/Pv0LEaSAJm6XOTZlFk8tHygu6fHDZ1i Fajvdchecjh4u0S0EwNdDvjCGngaFfkcUBGXzPfsP+FhOEopkhknqP8jMrCbCZzIqGFpVkgfTO5 7pyI= X-Google-Smtp-Source: AGHT+IG/LIJx5ycFaaKD2/9r1zOXsYmAz0tqld1yu63CwbF97j4o7Ig/q4aK3AtmPbc51kajVBh4Mg== X-Received: by 2002:a17:903:298f:b0:20c:72e8:4eb7 with SMTP id d9443c01a7336-2124d0f2b92mr76912605ad.25.1732059425611; Tue, 19 Nov 2024 15:37:05 -0800 (PST) Received: from hermes.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-211d0dc3109sm80338115ad.52.2024.11.19.15.37.05 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Nov 2024 15:37:05 -0800 (PST) Date: Tue, 19 Nov 2024 15:37:03 -0800 From: Stephen Hemminger To: netdev@vger.kernel.org Subject: netdev: operstate UNKNOWN for loopback and other devices? Message-ID: <20241119153703.71f97b76@hermes.local> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit It looks like loopback and other software devices never get the operstate set correctly. Not a serious problem, but it is incorrect. For example: $ ip -br link lo UNKNOWN 00:00:00:00:00:00 tap0 UNKNOWN ca:ff:ed:bf:96:a0 tap1 UNKNOWN 36:f5:16:d1:4c:15 For wireless and ethernet devices kernel reports UP and DOWN correctly. Looks like some missing bits in dev_open but not sure exactly where.