iflib: don't update the admin status in if_media_status()HEADmain

When _task_fn_admin() is active, it will regularly call
IFDI_UPDATE_ADMIN_STATUS(). So there is no need to do it in
iflib_media_status. This can be fairly expensive on some drivers (long
DELAY busywait loops waiting for a NIC command), and there is no need
to pause a userspace app in this DELAY() if it is happening
asynchronously anyway.

Note the logic to detect if _task_fn_admin() is regularly calling
IFDI_UPDATE_ADMIN_STATUS() was copied from that function.

Reviewed by: erj, kbowling
Sponsored by: Netflix
Differential Revision:	https://reviews.freebsd.org/D54096

0 files changed, 0 insertions, 0 deletions