On Fri, 20 Jan 2012 06:18:44 -0800 "Atchley, Scott" <atchle...@ornl.gov> wrote:
> Interesting. It totally hijacks the NIC; all traffic is captured. You would > have to implement your own IP stack, Verbs stack, etc. > Can multiple user space processes share the card? If so, how is security handled between them? Ira > Scott > > On Jan 19, 2012, at 11:50 AM, Yann Droneaud wrote: > > > Hi, > > > > I have discovered today the netmap project[1] through an ACM Queue > > article[2]. > > > > Netmap is a new interface to send and receive packets through an > > Ethernet interface (NIC). It seems to provide a raw access to network > > interface in order to process packets at high rate with a low overhead. > > > > This is an another example of "kernel-bypass"/"zero-copy" which are core > > features of InfiniBand verbs/RDMA. > > > > But unlike InfiniBand verbs/RDMA, Netmap seems to have a very small API. > > > > Such API could be enough to build an unreliable datagram messaging > > system on "low cost" hardware (without concerns of determinism, flow > > control, etc.). > > > > I'm asking myself if the way netmap exposes internal NIC rings could be > > applicable for IB/IBoE HCA ? e.g. beyond 10GbE NIC, is netmap relevant ? > > > > Regards. > > > > [1] http://info.iet.unipi.it/~luigi/netmap/ > > > > netmap - a novel framework for fast packet I/O > > Luigi Rizzo Università di Pisa > > > > [2] http://queue.acm.org/detail.cfm?id=2103536 > > > > Revisiting Network I/O APIs: The netmap Framework > > Luigi Rizzo, 2012-01-17 > > > > -- > > Yann Droneaud > > > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-rdma" 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 linux-rdma" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Ira Weiny Member of Technical Staff Lawrence Livermore National Lab 925-423-8008 wei...@llnl.gov -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
