> -----Original Message----- > From: netdev-ow...@vger.kernel.org [mailto:netdev- > ow...@vger.kernel.org] On Behalf Of Casey Leedom > Sent: Thursday, July 06, 2017 2:54 PM > To: Jakub Kicinski <kubak...@wp.pl> > Cc: Dustin Byford <dus...@cumulusnetworks.com>; Andrew Lunn > <and...@lunn.ch>; Roopa Prabhu <ro...@cumulusnetworks.com>; > da...@davemloft.net; linvi...@tuxdriver.com; netdev@vger.kernel.org; > vidya.chowd...@gmail.com; ol...@cumulusnetworks.com; Manoj Malviya > <manojmalv...@chelsio.com>; Santosh Rastapur <sant...@chelsio.com>; > yuval.mi...@qlogic.com; od...@mellanox.com; ari...@mellanox.com; > g...@mellanox.com; Kirsher, Jeffrey T <jeffrey.t.kirs...@intel.com> > Subject: Re: [PATCH net-next 1/3] net: ethtool: add support for forward error > correction modes > > | From: Jakub Kicinski <kubak...@wp.pl> > | Sent: Thursday, July 6, 2017 12:02 PM > | > | IMHO if something gets replugged all the settings should be reset. > | I feel that it's not entirely unlike replugging a USB adapter. Perhaps > | we should introduce some (devlink) notifications for SFP module events > | so userspace can apply whatever static user config it has? > > Absolutely a valid approach. As are all of the ones I outlined. > [..] > As I noted in my previous letter: this is something new that we've never > faced before with any prior networking technology. All previous networking > technologies had a static set of Physical Port Capabilities fixed from the > moment a Host Diver/Firmware first see a Port. We're now facing a situation > where these can change dynamically from moment to moment based on what > Transceiver Module is inserted.
Agree with your points generally, but other networking hw vendors have dealt with this since SFP variant and other modules arrived on the scene.
