vlan limits on e1000?

[Jack Vogel]

HMMMMMM, well this has a certain amount of deja vu to it :) There was a
problem like this
long ago when someone was using vlans AND the lagg device, the issue was
that the em
driver never received the vlan attach events because lagg ate them, so to
speak :)

Still I think this was only an issue with filtering. Just for giggles, turn
on BOTH tagging
and filtering and see what happens.

Jack


On Tue, Dec 7, 2010 at 9:57 AM, Mihai-Catalin Salgau <
csalgau-br at bitdefender.com> wrote:

> Hello Jack,
>
> Tuesday, December 7, 2010, 7:46:32 PM, you wrote:
>
> > Same thing I was thinking, there is nothing else that should limit vlans
> in
> > any way.
>
> > Jack
>
>
> > On Tue, Dec 7, 2010 at 6:33 AM, John Baldwin <jhb at freebsd.org> wrote:
>
> >> On Monday, December 06, 2010 8:18:07 pm Mihai-Catalin Salgau wrote:
> >> > Hello Freebsd-net,
> >> >
> >> >   I have two dual port NICs, one Broadcom(bce0,bce1) and one
> >> Intel(em0,em1), on FreeBSD 8-stable
> >> >   (about two weeks old) with a DHCP server running.
> >> >   I've been successfully using a large number of vlans over bce1,em0
> and
> >> em1 with iSCSI,
> >> >   but wanted to switch to AoE(ata over ethernet). I've set vlandevs by
> >> round-robin, and got
> >> >   vlan1 on bce0, vlan2 on em0, vlan3 on em1, vlan4 on bce0....vlan12
> on
> >> em1. I've binded
> >> >   net/vblade instances to each interface, but the problem I'm facing
> now
> >> is that while
> >> >   vlans 1-10 are working properly, vlans 11 and 12 won't see any
> traffic
> >> unless the interface is
> >> >   in promiscuous mode. I noticed that while trying to attach tcpdump
> and
> >> saw the thing instantly work.
> >> >   I've had no problems with iSCSI over the same setup, and dhcp
> packets
> >> are getting trough properly.
> >> >   I've moved those last two vlans to bce0 and they work ok, but I'm a
> bit
> >> locked on why this is happening.
> >> >   Are there any known limitations on vlans on e1000?
> >>
> >> Are you using the 'vlanhwfilter' feature?
> >>
> >> --
> >> John Baldwin
>
> No, I'm not using it.
> em0&em1 have RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4 enabled
> The Broadcom has
> RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO
> I've also tried disabling vlanhwtag and enabling vlanhwfilter, but it
> doesn't help.
> Still, the moment I switch the interface to promiscuous mode, it works.
> I've also tried setting 8 vlans on bce1 to see if there's a limit per
> driver for some reason, but it works ok.
>
>