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
