From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 9EC88381E99 for ; Thu, 2 Jul 2026 14:53:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783004020; cv=none; b=r/YHEUuvik7fBhqN9Wjz0C7nyD2nJysesHxHsEH/s+BBbER8W9ZdAhgXxEMX0sK/EBk6Sy1uE4lLCIQho/oNyG+xIfG7uh189dJMwgQuxhyxyNlF/LkCkJ/T1pmhcvg4bllAExI8YfJZN2c/tsW+be56m0RqM+JqOG9I6HA6y0M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783004020; c=relaxed/simple; bh=hXxEauG5BZGJdya1zFQS99RKMHpc8yojTtxoCHfr6jg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AbjcR+QELNQT1RnZABZ41HrbwzhjYuqDsIOVjZdn8YQFy35+StgsnqP+SOVGxjtm/ltS6XvDat06MymtV9SP6tv7oA3L+2bzDchiDUInqXJIoQ7VP++fqfMgisMyB3MY8wDO7POR+hpJS11qvIy6Ur/jz0yg4XmFit7Z/3xJLms= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Iyp3y6Cz; arc=none smtp.client-ip=198.175.65.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Iyp3y6Cz" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1783004019; x=1814540019; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=hXxEauG5BZGJdya1zFQS99RKMHpc8yojTtxoCHfr6jg=; b=Iyp3y6CzkXPK0cxabbump2EDRoWFIumHC3X3uzw5B19BkmQxasmwSbVM 63l3aBZONtz4gBLuPhRKBo8leWIbqhIW9z6FPgFxP+P4Ya35OFR6LQDRa nJWYWxuHQdNGgqvY1hvnxlTr4XpnyO/FNpcNjWtHc5/VOy2iVUWSntxYR ex/3ghNUchU2m5G6TZZ+aTH1achtFFzeL4T2M85G4jSnx/peQtA4ZTbg7 ttuYeCz3YREFTDHVfd4e1DvcfrXJb8qYYBgH9G18Gt0LtqyqUK/MCnCHK LM47/k8RYByO+5hqeTrxJIRhWGN4X2l4CbmE/JSJqILdvxAzrv9j2Lu+D g==; X-CSE-ConnectionGUID: EMDS4fbqQ+W7HZQKHF4SZw== X-CSE-MsgGUID: ZOIx5MC8RPWolFFiAUT1ew== X-IronPort-AV: E=McAfee;i="6800,10657,11835"; a="83537879" X-IronPort-AV: E=Sophos;i="6.25,144,1779174000"; d="scan'208";a="83537879" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jul 2026 07:53:39 -0700 X-CSE-ConnectionGUID: xO+iR3LQSMK/ayqJWuPrxQ== X-CSE-MsgGUID: Qps4nFcIRiiiqgaWW9zZ3Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,144,1779174000"; d="scan'208";a="251160904" Received: from axxiablr1.iind.intel.com (HELO axxiablr1.gar.corp.intel.com) ([10.190.162.100]) by orviesa006.jf.intel.com with ESMTP; 02 Jul 2026 07:53:35 -0700 From: Siddaraju DH To: Michal Kubecek , Andrew Lunn , Maxime Chevallier , kuba@kernel.org, netdev@vger.kernel.org Cc: Shubham Das , Balaji Chintalapalle , Vijay Srinivasan , Magnus Lindberg , Niklas Damberg , Jonas Wirandi , Siddaraju DH , Siddaraju DH Subject: [PATCH net-next] ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA Date: Thu, 2 Jul 2026 20:23:26 +0530 Message-Id: <20260702145326.1024800-1-siddaraju.dh@intel.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add comment to clarify the physical media 10000baseCR follows. 10000baseCR does not correspond to any IEEE 802.3 *base-CR PMD. It has no autonegotiation, no link training, and no mandatory FEC. The industry standard for this media type is SFF-8431 Appendix-E Direct Attach cable, also known as 10G_SFI_DA. This change follows the conversation from netdev mail thread with subject: "the confusing 10000base_CR. Shouldn't it be 10000_SFI_DA?" Signed-off-by: Siddaraju DH --- include/uapi/linux/ethtool.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index a2091d4e00f3..986d70caec33 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -2013,7 +2013,13 @@ enum ethtool_link_mode_bit_indices { ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT = 39, ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT = 40, ETHTOOL_LINK_MODE_1000baseX_Full_BIT = 41, + + /* Despite the "baseCR" in 10000baseCR, this is not an IEEE 802.3 baseCR + * It represents SFF-8431 Appendix-E SFP+ Direct Attach (10G-SFI-DA). + * The name is kept as-is for uAPI backward compatibility. + */ ETHTOOL_LINK_MODE_10000baseCR_Full_BIT = 42, + ETHTOOL_LINK_MODE_10000baseSR_Full_BIT = 43, ETHTOOL_LINK_MODE_10000baseLR_Full_BIT = 44, ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT = 45, -- 2.25.1