The link interrupt hasn't been re-enabled in the handler,
which caused that interface state changes were not reported
to the OS.
Event: EuroBSD 2019 Hackathon
Sponsored by: Intel Corporation
I think this patch isn't entirely correct and complete; em_msix_link() should set EM_MSIX_LINK only for 82574 and em_if_update_admin_status() should only re-arm LSC interrupts if the driver takes advantage of autoclearing and, thus, uses MSI-X for such a device.
I've created D21924 with my version of the fix, which takes the above into account.
Hi, I just reported some feedback on PR 236724 you might be interested to check: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236724#c20 - was not sure on which of the differential reviews I should post to, this or D21712