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net: RPS: Make hardware-accelerated RFS conditional on NETIF_F_NTUPLE

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For testing and debugging purposes it is useful to be able to disable
hardware acceleration of RFS without disabling RFS altogether.  Since
this is a similar feature to 'n-tuple' flow steering through the
ethtool API, test the same feature flag that controls that.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2011-02-15 20:32:04 +00:00
parent 94b274bf5f
commit 69a19ee60d
1 changed files with 2 additions and 1 deletions
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3
net/core/dev.c
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@ -2607,7 +2607,8 @@ set_rps_cpu(struct net_device *dev, struct sk_buff *skb,
int rc;
/* Should we steer this flow to a different hardware queue? */
if (!skb_rx_queue_recorded(skb) || !dev->rx_cpu_rmap)
if (!skb_rx_queue_recorded(skb) || !dev->rx_cpu_rmap ||
!(dev->features & NETIF_F_NTUPLE))
goto out;
rxq_index = cpu_rmap_lookup_index(dev->rx_cpu_rmap, next_cpu);
if (rxq_index == skb_get_rx_queue(skb))