Re: Re: newbie question on enabling vlan feature in the driver

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kmk wrote:
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.

Show me ifconfig -a on the VLAN machine, and what commands
you are using to ping.

If you want to give me ssh access to the system, I'll log
in and take a look..



On 3/13/07, *Muthu Kumar* <km7kumar@xxxxxxxxx <mailto:km7kumar@xxxxxxxxx>> wrote:


    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
    and related callbacks?

    By the way, I don't see my postings @


    On 3/13/07, *Muthu Kumar* < km7kumar@xxxxxxxxx
    <mailto:km7kumar@xxxxxxxxx>> wrote:

        'm trying to enable VLAN in my eth driver. The eth mac supports
        vlan processing and has a register (vlantag1) that should be
        with 0x8100 to enable VLAN processing. Other than this, the mac
        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
        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



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Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc

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