Mon, Nov 16, 2015 at 10:29:12AM CET, pjonn...@broadcom.com wrote: >Hello, > >I am looking to offload bond interfaces to hardware for forwarding. Linux >allows for configuring >a variety of parameters on bonds or slave interfaces. Not all configurations >can be offloaded to >hardware. For example, certain hardware cannot support bonds with mode of >adaptive load balancing. > >When such a configuration is provided by user, we have two options at hand >(for platforms supporting >hardware offloads): > >1. Reject the configuration. > >2. Handle the bond interface in software. In a scenario where this bond >interface is part >of a bridge interface, for simplicity purpose, all other interfaces in the >bridge need to be >handled in software - which results in a very low packet processing >performance.
Although it might sound intriguing to fallback to sw here, it makes no sense and user certainly does not want that. For example in case of our HW, we have 100gbit forwarding which would be degraded to ~1gbit (for one port pair). Another thing is that for some HW this mignt not be even possible. In our case it would be very complicated. I believe that the correct approach is to let driver decide if the configuration is acceptable or not and reject it in case it is not. > >I'm writing to gather feedback on the approach to take, including any other >suggestions. >We have discussed this briefly in our weekly netdev meeting, and I received >votes for >option #1. > >Thanks >Prem >-- >To unsubscribe from this list: send the line "unsubscribe netdev" in >the body of a message to majord...@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
