From: "D H, Siddaraju" <siddaraju.dh@intel.com>
To: Michal Kubecek <mkubecek@suse.cz>, Andrew Lunn <andrew@lunn.ch>,
Maxime Chevallier <maxime.chevallier@bootlin.com>,
netdev@vger.kernel.org
Cc: Shubham Das <Shubham.Das@intel.com>,
Balaji Chintalapalle <balaji.chintalapalle@intel.com>,
Vijay Srinivasan <vijay.srinivasan@intel.com>,
Magnus Lindberg <magnus.k.lindberg@ericsson.com>,
Niklas Damberg <niklas.damberg@ericsson.com>,
Jonas Wirandi <jonas.wirandi@ericsson.com>,
Siddaraju DH <siddarajudh@gmail.com>,
Siddaraju DH <siddaraju.dh@intel.com>
Subject: [PATCH ethtool] man: ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA
Date: Thu, 2 Jul 2026 20:20:02 +0530 [thread overview]
Message-ID: <20260702145002.1024439-1-siddaraju.dh@intel.com> (raw)
From: Siddaraju DH <siddaraju.dh@intel.com>
Annotate the 10000baseCR entry in the advertise mask table so users
understand what physical media this mode it actually represents.
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 <siddaraju.dh@intel.com>
---
ethtool.8.in | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ethtool.8.in b/ethtool.8.in
index 3173287..604de9e 100644
--- a/ethtool.8.in
+++ b/ethtool.8.in
@@ -937,7 +937,7 @@ lB l lB.
0x40000 10000baseKX4 Full
0x80000 10000baseKR Full
0x100000 10000baseR_FEC
-0x40000000000 10000baseCR Full
+0x40000000000 10000baseCR Full (a.k.a 10G_SFI_DA, SFF-8431 Appendix-E)
0x80000000000 10000baseSR Full
0x100000000000 10000baseLR Full
0x200000000000 10000baseLRM Full
--
2.25.1
next reply other threads:[~2026-07-02 14:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-02 14:50 D H, Siddaraju [this message]
2026-07-02 17:12 ` [PATCH ethtool] man: ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA Andrew Lunn
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260702145002.1024439-1-siddaraju.dh@intel.com \
--to=siddaraju.dh@intel.com \
--cc=Shubham.Das@intel.com \
--cc=andrew@lunn.ch \
--cc=balaji.chintalapalle@intel.com \
--cc=jonas.wirandi@ericsson.com \
--cc=magnus.k.lindberg@ericsson.com \
--cc=maxime.chevallier@bootlin.com \
--cc=mkubecek@suse.cz \
--cc=netdev@vger.kernel.org \
--cc=niklas.damberg@ericsson.com \
--cc=siddarajudh@gmail.com \
--cc=vijay.srinivasan@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox