K 10
svn:author
V 3
erj
K 8
svn:date
V 27
2023-02-07T00:33:09.457524Z
K 7
svn:log
V 694
iflib: Add null check to iflib_stop()

Ever since gtaskqueue_drain() was added to iflib_stop(), a kernel panic
occurs when the ice(4) driver is in recovery mode. Queues are not
initialized in this mode, so gt_taskqueue is not initialized, and
gtaskqueue_drain() will panic.

Fix this by only doing a drain if an RX queue's gt_taskqueue is
initialized.

Signed-off-by: Eric Joyner <erj@FreeBSD.org>

Reviewed by:	erj@
MFC after:	1 week
Sponsored by:	Intel Corporation
Differential Revision:	https://reviews.freebsd.org/D37892

(cherry picked from commit 9147969bc277b389a62373c6a5050a2ebfd39071)

Git Hash:   c907f13af0e66ea7f3112a06716d4ed6e04da258
Git Author: przemyslawx.lewandowski@intel.com
END