On Mon, Dec 15, 2014 at 10:33 PM, Thomas Monjalon <thomas.monjalon at 6wind.com > wrote: > > 2014-12-15 21:11, Vladislav Zolotarov: > > Hi, > > I'm running an ixgbevf PMD on an AWS guests with extended networking > > (SR-IOV functions of 82599 Intel's NIC) and noticed that even in the > > current git tree there is no support for a multi-queue in this PMD: reta > > size returned by rte_eth_dev_info_get() call is 0, while max_rx_queues > and > > max_tx_queues are both 4. > > > > Linux ixgbevf-2.15.3 driver on the other hand successfully initializes 2 > > RSS queues: for some reason it always limits the number of RSS queues by > 2. > > > > ixgbevf_main.c: line 2539 > > u16 rss = min_t(u16, num_online_cpus(), 2); > > > > The above is strange since if MRQE is set to 1010b there are 4 RSS queues > > available which seems to be the case in my AWS Guest. > > > > However, let's get back to DPDK. As I've mentioned above the SR-IOV > > function i have is RSS capable (to be 100% sure I've verified both queues > > are receiving packets in a multi-socket TCP test). And it's a shame I > can't > > utilize it with a DPDK. > > Yes, it is not yet supported. > But a patch was recently sent: > http://dpdk.org/ml/archives/dev/2014-December/010028.html
Good to know and nice timing > > t > > I wonder if there are any blockers to add this capability to the ixgbevf > > PMD and if not is it scheduled to some time soon? > > Please jump in the above thread for your questions. > > My turn to ask a question: > Does it mean DPDK is going to be supported in your system (OSv)? > In general yes. It's premature to ask now since there are components that already implemented in OSv and won't be needed (efficient producer-consumer, huge pages, etc). We sure like to reuse the driver code, it's a pity not to contribute to the same code base. We'll certainly like to let unmodified dpdk apps run as well Initially we're playing w/ the Linux dpdk on the host and AWS to gain familiarity w/ it > I've seen it in the OSv roadmap. > Could we have more details about how it would be integrated? > > Thanks > -- > Thomas >