From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: ixgbe tuning reset when XDP is setup
Date: Fri, 15 Dec 2017 10:53:38 -0500 (EST)
Message-ID: <20171215.105338.2092740911243038177.davem@davemloft.net>
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From: Eric Leblond <eric@regit.org>
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.