netdev - Re: [PATCH net v2] net: sfp: Fix quirk for Ubiquiti U-Fiber Instant SFP module

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <aXtCXoGtsD4VUDKH@shell.armlinux.org.uk>
Date: Thu, 29 Jan 2026 11:19:58 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Marek Behún <kabel@...nel.org>
Cc: netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH net v2] net: sfp: Fix quirk for Ubiquiti U-Fiber Instant
 SFP module

On Thu, Jan 29, 2026 at 09:22:27AM +0100, Marek Behún wrote:
> Commit fd580c9830316eda ("net: sfp: augment SFP parsing with
> phy_interface_t bitmap") did not add augumentation for the interface
> bitmap in the quirk for Ubiquiti U-Fiber Instant.
> 
> The subsequent commit f81fa96d8a6c7a77 ("net: phylink: use
> phy_interface_t bitmaps for optical modules") then changed phylink code
> for selection of SFP interface: instead of using link mode bitmap, the
> interface bitmap is used, and the fastest interface mode supported by
> both SFP module and MAC is chosen.
> 
> Since the interface bitmap contains also modes faster than 1000base-x,
> this caused a regression wherein this module stopped working
> out-of-the-box.

Thanks for finding that. Probably the result of having the patch
converting to use the PHY interface mode mask sitting around for a
very long time. Sorry about missing that.

Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

Thanks!

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!