[VLAN] Re: newbie question on enabling vlan feature in the driver

[kmk]

Ben, I enabled vlan in the eth mac by writing to vlan1tag and adjust mtu to
handle
vlan. Now, when I ping from a remote pc which also has vlan enabled
interface,
I don't see vlan tags in the frames. Same issue if I ping the remote PC.
Basically,
I don't see vlan tag in tx/rx directions.

/kmk

On 3/13/07, Muthu Kumar <km7kumar at gmail.com> wrote:
>
> Ben,
>
> Thanks for your response. The mac data sheet says, when 0x8100 is written
> to the
> van1_tag register, the mac compares 13th & 14th bytes of incoming frame
> and, if it
> finds a match, it sets vlan1 bit in rx status register. However, this
> particular status
> bit is not actually exposed to driver access. The documentation could be
> wrong.
>
> Other than the above, no behaviour changes. In this case, I just simply
> ensure
> that the driver/chip can handle MTU + 4 bytes? No need to enable
> NETIF_VLAN_HW_TX/RX
> and related callbacks?
>
> By the way, I don't see my postings @
> http://ns2.lanforge.com/pipermail/vlan/2007-March/thread.html.
>
> Thanks
> /kmk
>
> On 3/13/07, Muthu Kumar <km7kumar at gmail.com> wrote:
> >
> > 'm trying to enable VLAN in my eth driver. The eth mac supports
> > vlan processing and has a register (vlantag1) that should be written
> > with 0x8100 to enable VLAN processing. Other than this, the mac does
> > not have any other vlan related registers or anything else. It does not
> > give
> > any indication during rx if VLAN pkts received.
> >
> > How do I enable VLAN in my driver for such a MAC? I'm basically
> > confused with all the callbacks such as vlan_rx_register etc most
> > drivers support.
> >
> > Currently, in my driver I've enabled the features NETIF_VLAN_HW_TX/RX
> > and providing the above callbacks. But I'm not sure whether these flags
> > are applicable to my driver.
> >
> > what else I need to do? I'm kinda stuck here. Any help would be highly
> > appreciated.
> >
> > thx
> > /kmk
>
>
>
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