Date: Sat, 22 Feb 2014 09:03:17 +0800 From: jerry <jerry.lilijun@huawei.com> To: Luigi Rizzo <rizzo@iet.unipi.it>, <netdev@vger.kernel.org>, "freebsd-net@freebsd.org" <net@freebsd.org> Subject: Re: netmap, VALE and netmap pipes Message-ID: <5307F755.4090303@huawei.com> In-Reply-To: <CA%2BhQ2%2Bgbs9aBneUaDGAnKVoPHspzc=5o%2Bh%2Bf_K=T%2BCy8sRxr%2Bw@mail.gmail.com> References: <CA%2BhQ2%2Bgbs9aBneUaDGAnKVoPHspzc=5o%2Bh%2Bf_K=T%2BCy8sRxr%2Bw@mail.gmail.com>
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Hi Luigi, How to use netmap pipe by pkt-gen commands? I have tried the commands as follows: ./pkt-gen -i netmap:pipename{1 -f tx ./pkt-gen -i netmap:pipename}1 -f rx (in another terminal) But it works failed. Should the pipename be replaced with a invalid NIC name such as "eth3" in netmap mode? The netmap pipe works from software ring to software ring independently with NICs, I understand. Is that right? B.R. Jerry On 2014/2/17 18:11, Luigi Rizzo wrote: > Hi, > we have recently made a few extensions to netmap/VALE and put various > pieces of code on public repositories, so i thought i'd share the > pointers. All the code below runs with equal features and performance > on FreeBSD and Linux, and we are trying to upstream it in the relevant > projects if possible (as an example, QEMU recently added a netmap backend), > at which point some of these clone repositories will become unnecessary. > > See http://info.iet.unipi.it/~luigi/netmap for more details. > > https://code.google.com/p/netmap/ > The latest netmap code for FreeBSD/Linux. It has native support > for certain NICs; emulated netmap over unmodified drivers; > enhanced parallelism in the VALE switch (20 Mpps/source, scaling > up to ~50Mpps); and a new feature called "netmap pipe" that > does zero-copy blocking I/O at over 100 Mpps. > Other features are the ability to allocate tons of extra > netmap buffers, and configurable sharing of memory among NICs, > VALE ports and netmap pipes. This increases the opportunity for > zero copy operation.
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