[dpdk-dev] [PATCH v7 1/1] bond: add mode 4 support v7

[Jastrzebski, MichalX K]

> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> Sent: Thursday, November 27, 2014 7:09 PM
> To: Jastrzebski, MichalX K
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v7 1/1] bond: add mode 4 support v7
> 
> 2014-11-27 18:01, Michal Jastrzebski:
> > From: Pawel Wodkowski <pawelx.wodkowski at intel.com>
> >
> > This patch set add support for dynamic link aggregation (mode 4) to the
> > librte_pmd_bond library. This mode provides auto
> negotiation/configuration
> > of peers and well as link status changes monitoring using out of band
> > LACP (link aggregation control protocol) messages. For further details of
> > LACP specification see the IEEE 802.3ad/802.1AX standards. It is also
> > described here
> > https://www.kernel.org/doc/Documentation/networking/bonding.txt.
> >
> > In this implementation we have an array of mode 4 settings for each slave.
> > There is also assumption that for every port is one aggregator (it might
> > be unused if better is found).
> >
> > Difference in this implementation vs Linux implementation:
> > - this implementation it is not directly based on state machines but current
> >   state is calculated from actor and partner states (and other things too).
> >
> > Some implementation details:
> > - during rx burst every packet Is checked if this is LACP or marker packet.
> >   If it is LACP frame it is passed to mode 4 logic using slaves rx ring  and
> >   removed from rx buffer before it is returned
> > - in tx burst, packets from mode 4 (if any) are injected into each slave.
> > - there is a timer running in background to process/produce mode 4
> >   frames form rx/to tx functions.
> >
> > Some requirements for this mode:
> > - for LACP mode to work rx and tx burst functions must be invoked
> >   at least in 100ms intervals (testpmd modified to satisfy this requirement)
> > - provided buffer to rx burst should be at least 2x slave count size. This is
> >   not needed but might increase performance especially during initial
> >   handshake.
> >
> > Signed-off-by: Pawel Wodkowski <pawelx.wodkowski at intel.com>
> 
> I guess it is acked by Declan?
> 
> --
> Thomas
Hi Thomas,
I sent this patch to Declan before, and he had no objections.