* [PATCH ethtool] man: ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA
@ 2026-07-02 14:50 D H, Siddaraju
2026-07-02 17:12 ` Andrew Lunn
0 siblings, 1 reply; 2+ messages in thread
From: D H, Siddaraju @ 2026-07-02 14:50 UTC (permalink / raw)
To: Michal Kubecek, Andrew Lunn, Maxime Chevallier, netdev
Cc: Shubham Das, Balaji Chintalapalle, Vijay Srinivasan,
Magnus Lindberg, Niklas Damberg, Jonas Wirandi, Siddaraju DH,
Siddaraju DH
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH ethtool] man: ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA
2026-07-02 14:50 [PATCH ethtool] man: ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA D H, Siddaraju
@ 2026-07-02 17:12 ` Andrew Lunn
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Lunn @ 2026-07-02 17:12 UTC (permalink / raw)
To: D H, Siddaraju
Cc: Michal Kubecek, Maxime Chevallier, netdev, Shubham Das,
Balaji Chintalapalle, Vijay Srinivasan, Magnus Lindberg,
Niklas Damberg, Jonas Wirandi, Siddaraju DH
On Thu, Jul 02, 2026 at 08:20:02PM +0530, D H, Siddaraju wrote:
> 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>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew
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2026-07-02 14:50 [PATCH ethtool] man: ethtool: link 10000baseCR to SFF-8431, Appendix-E SFP+ DA D H, Siddaraju
2026-07-02 17:12 ` Andrew Lunn
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