[Bug 236584] em driver does not honor disabling vlanhwcsum

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236584

            Bug ID: 236584
           Summary: em driver does not honor disabling vlanhwcsum
           Product: Base System
           Version: 11.2-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: murat at sunnyvalley.io

Please see the following:

[root at bsd11 ~]# uname -a
FreeBSD bsd11.2 11.2-STABLE FreeBSD 11.2-STABLE #0: Sat Dec 22 11:34:16 PST
2018     root at bsd11.2:/usr/obj/usr/src/sys/GENERIC  amd64

[root at bsd11 ~]# ifconfig em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 52:54:00:8a:e5:33
        hwaddr 52:54:00:8a:e5:33
        inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active

[root at bsd11 ~]# ifconfig em0 -vlanhwtso -vlanhwfilter -vlanhwtag -vlanhwcsum

[root at bsd11 ~]# ifconfig em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=208b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWCSUM,WOL_MAGIC>
        ether 52:54:00:8a:e5:33
        hwaddr 52:54:00:8a:e5:33
        inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active

[root at bsd11 ~]# ifconfig em0 -vlanhwcsum

[root at bsd11 ~]# ifconfig em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=208b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWCSUM,WOL_MAGIC>
        ether 52:54:00:8a:e5:33
        hwaddr 52:54:00:8a:e5:33
        inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
[root at bsd11 ~]#

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