On 19 Nov 2014, at 20:02, Hans Petter Selasky <h...@selasky.org> wrote:
> The M_FLOWID flag is marked as deprecated in the FreeBSD kernel code and the
> patch below completely removes it. I suggest we will now be using the
> "m_pkthdr.rsstype" also known as "M_HASHTYPE" to decide if the flowid value
> is valid or not. When the "rsstype" is set to "M_HASHTYPE_NONE" the
> "m_pkthdr.flowid" field is not valid. Else this field contains valid data for
> both TX and RX direction.
> The network drivers today use the "rsstype" field only when receiving
> traffic. After my patch it is also used when sending traffic, and probably we
> should rename it.
> The reason for using the rsstype field for transmit, is to avoid introducing
> another field in the MBUF's packet header in order to steer outgoing traffic
> into special multiple purpose hardware FIFOs. This new feature should coexist
> with the existing flowid mechanism, and this is achieved by introducing a new
> hash type which I've named "M_HASHTYPE_HWRING" in my patch. This type can be
> selected by upper layers when generating traffic for lower layers, to
> indicate that the traffic is of a special kind and should have special
> treatment by the hardware, like rate-limiting. Hardware which doesn't support
> M_HASHTYPE_HWRING will send out the packets like usual.
> Patch is available from here:
> Comments are appreciated!
Before finally committing this, drop me a note. All the SCTP changes need to be
Depending on the time and if it is OK for you, I would try to integrate this
upstream and push
it down to FreeBSD. Then you can commit the rest. This is simpler for me than
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