Re: DSA vs envelope frames

2016-12-01 Thread Toshiaki Makita
On 2016/11/30 23:58, Nikita Yushchenko wrote: >>> (1) When DSA is in use, frames processed by FEC chip contain DSA tag and >>> thus can be larger than hardcoded limit of 1522. This issue is not >>> FEC-specific, any driver that hardcodes maximum frame size to 1522 (many >>> do) will have this issue

Re: DSA vs envelope frames

2016-11-30 Thread Florian Fainelli
On 11/30/2016 07:10 AM, Andrew Lunn wrote: >> What is not really clear - what if several tagging protocols are used >> together. AFAIU, things may be more complex that simple appending of >> tags, e.g. EDSA tag can carry VLAN id inside. > > Hi Nikita > > At least for all current tagging protoco

Re: DSA vs envelope frames

2016-11-30 Thread Andrew Lunn
> What is not really clear - what if several tagging protocols are used > together. AFAIU, things may be more complex that simple appending of > tags, e.g. EDSA tag can carry VLAN id inside. Hi Nikita At least for all current tagging protocols, the size of the tag is constant. And you cannot run

DSA vs envelope frames

2016-11-30 Thread Nikita Yushchenko
>> (1) When DSA is in use, frames processed by FEC chip contain DSA tag and >> thus can be larger than hardcoded limit of 1522. This issue is not >> FEC-specific, any driver that hardcodes maximum frame size to 1522 (many >> do) will have this issue if used with DSA. > > BTW I'm trying to introduc