em driver "broken" in 4.11-STABLE ...

[Marc G. Fournier]

the problem doesn't exist in a Feb kernel, but on a machine that I'm 
running the latest code on, doing an 'ifconfig em0' doesn't appear to be 
sending out the arp updates properly ... to the point that I had to 
manually delete the arp for an IP on one of the other servers, on the same 
network, so that they could talk to each other ...

the other 'weird behaviour' that I'm getting with this kernel is that when 
I do do the ifconfig to bring an IP online, the network 'hangs' for 60+ 
seconds ...

it looks like someone MFCd something back for this driver back in May:

mercury# cd /sys/dev/em
mercury# ls -lt
total 486
-rw-r--r--  1 root  wheel  118971 May 22 11:19 if_em_hw.h
-rw-r--r--  1 root  wheel    5501 May 22 11:19 if_em_osdep.h
-rw-r--r--  1 root  wheel  227691 May 22 11:19 if_em_hw.c
-rw-r--r--  1 root  wheel    9619 May 22 11:19 README
-rw-r--r--  1 root  wheel   97880 May 22 11:19 if_em.c
-rw-r--r--  1 root  wheel   14022 May 22 11:19 if_em.h
-rw-r--r--  1 root  wheel    1609 Apr  4  2003 LICENSE
mercury#


While the server that does work, its em driver was from Oct:

neptune# ls -lt
total 406
-rw-r--r--  1 root  wheel   96678 Feb  3 00:18 if_em.c
-rw-r--r--  1 root  wheel    4643 Oct 22  2004 if_em_osdep.h
-rw-r--r--  1 root  wheel   14117 Oct 22  2004 if_em.h
-rw-r--r--  1 root  wheel  185587 Oct 22  2004 if_em_hw.c
-rw-r--r--  1 root  wheel   94374 Oct 22  2004 if_em_hw.h
-rw-r--r--  1 root  wheel   10837 Sep 20  2003 README
-rw-r--r--  1 root  wheel    1609 Apr  4  2003 LICENSE



----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: scrappy at hub.org           Yahoo!: yscrappy              ICQ: 7615664