> From: Wang, Haiyue [mailto:[email protected]] > Sent: Wednesday, 13 April 2022 04.47 > To: Daly, Jeff; [email protected] > Cc: [email protected]; Stephen Douthit; Yang, Qiming > > > From: Jeff Daly <[email protected]> > > Sent: Wednesday, April 13, 2022 01:42 > > To: [email protected] > > Cc: [email protected]; Stephen Douthit <[email protected]>; > Wang, Haiyue <[email protected]> > > > > Currently the ixgbe driver does not ID any SFP except for the first > one > > plugged in. This can lead to no-link, or incorrect speed conditions. > > > > For example: > > > > * If link is initially established with a 1G SFP, and later a 1G/10G > > multispeed part is later installed, then the MAC link setup functions > are > > never called to change from 1000BASE-X to 10GBASE-R mode, and the > link > > stays running at the slower rate. > > > > * If link is initially established with a 1G SFP, and later a 10G > only > > module is later installed, no link is established, since we are still > > trasnsmitting in 1000BASE-X mode to a 10GBASE-R only partner. > > > > Refactor the SFP ID/setup, and link setup code, to more closely match > the > > flow of the mainline kernel driver which does not have these issues. > In > > that driver a service task runs periodically to handle these > operations > > based on bit flags that have been set (usually via interrupt or > userspace > > request), and then get cleared once the requested subtask has been > > completed. > > > > Fixes: af75078fece ("first public release") > > Cc: [email protected] > > > > So BIG change for new platform, DON'T CC to stable!
What do you mean by "new platform"? The ixgbe hardware and driver is not new. This patch fixes a bug (with a serious impact when occurring), so it should be backported. The size of the patch does not disqualify it for backporting. -Morten
