On Fri, Dec 15, 2017 at 5:56 PM, Peter Manev <petermanev@xxxxxxxxx> wrote: > >> On 15 Dec 2017, at 17:51, Alexander Duyck <alexander.duyck@xxxxxxxxx> wrote: >> >> On Fri, Dec 15, 2017 at 8:03 AM, John Fastabend >> <john.fastabend@xxxxxxxxx> wrote: >>> On 12/15/2017 07:53 AM, David Miller wrote: >>>> From: Eric Leblond <eric@xxxxxxxxx> >>>> Date: Fri, 15 Dec 2017 11:24:46 +0100 >>>> >>>>> Hello, >>>>> >>>>> When using an ixgbe card with Suricata we are using the following >>>>> commands to get a symmetric hash on RSS load balancing: >>>>> >>>>> ./set_irq_affinity 0-15 eth3 >>>>> ethtool -X eth3 hkey 6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A equal 16 >>>>> ethtool -x eth3 >>>>> ethtool -n eth3 >>>>> >>>>> Then we start Suricata. >>>>> >>>>> In my current experiment on XDP, I have Suricata that inject the eBPF >>>>> program when starting. The consequence of that when using an ixgbe card >>>>> is that the load balancing get reset and all interrupts are reaching >>>>> the first core. >>>> >>>> This definitely should _not_ be a side effect of enabling XDP on a device. >>>> >>> >>> Agreed, CC Emil and Alex we should restore these settings after the >>> reconfiguration done to support a queue per core. >>> >>> .John >> >> So the interrupt configuration has to get reset since we have to >> assign 2 Tx queues for every Rx queue instead of the 1-1 that was >> previously there. That is a natural consequence of rearranging the >> queues as currently happens. The issue is the q_vectors themselves >> have to be reallocated. The only way to not make that happen would be >> to pre-allocate the Tx queues for XDP always. >> >> Also just to be clear we are talking about the interrupts being reset, >> not the RSS key right? I just want to make sure that is what we are >> talking about. >> > > Yes. > From the tests we did I only observed the IRQs being all reset to the first CPU after Suricata started. > > > >> Thanks. >> >> - Alex Hi, We were wondering if there is any follow up/potential solution for that? If there is something we could help out testing with regards to that - please let us know. Thank you -- Regards, Peter Manev
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