kern/53945: -current wm WOL regression

[kardel%netbsd.org@localhost]

>Number:         53945
>Category:       kern
>Synopsis:       -current wm WOL for I211 ceased working
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 04 14:45:00 +0000 2019
>Originator:     Frank Kardel
>Release:        NetBSD 8.99.34
>Organization:
	
>Environment:
	
	
System: NetBSD pip.kardel.name 8.99.34 NetBSD 8.99.34 (GENERIC) #2: Sun Feb 3 13:31:03 CET 2019 kardel%pip.kardel.name@localhost:/src/NetBSD/cur/src/obj.amd64/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
	Somewhere between
        $NetBSD: if_wm.c,v 1.601 2018/11/22 15:09:46 msaitoh Exp $
	and
        $NetBSD: if_wm.c,v 1.620 2019/01/25 08:04:07 msaitoh Exp $
        WOL functionality for I211 stopped working.
	dmesg for 8.99.26
		wm0: for TX and RX interrupting at msix3 vec 0 affinity to 1
		wm0: for TX and RX interrupting at msix3 vec 1 affinity to 2
		wm0: for LINK interrupting at msix3 vec 2
		wm0: PCI-Express bus
		wm0: 64 words iNVM, version 0.4
		wm0: Ethernet address xx:xx:xx:xx:xx:xx
		wm0: Copper
works		wm0: 0xc214420<INVM,IOH_VALID,PCIE,NEWQUEUE,WOL,PLLWA>
	dmesg for 8.99.31-34
		wm0: for TX and RX interrupting at msix3 vec 0 affinity to 1
		wm0: for TX and RX interrupting at msix3 vec 1 affinity to 2
		wm0: for LINK interrupting at msix3 vec 2
		wm0: PCI-Express bus
		wm0: 64 words iNVM, version 0.4
		wm0: Ethernet address xx:xx:xx:xx:xx:xx
		wm0: Copper
fails		wm0: 0xc614420<INVM,IOH_VALID,PCIE,NEWQUEUE,WOL,EEE,PLLWA,CLSEMWA>

>How-To-Repeat:
	boot a kernel with if_wm.c,v 1.601 and see I211 perform WOL
	if_wm.c,v 1.620 and possibly some versions below fail to perform WOL.
	the issue still exists with $NetBSD: if_wm.c,v 1.623 2019/01/31 15:30:23 msaitoh Exp $.

>Fix:
	n/a

>Unformatted: