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authorBen Hutchings <bhutchings@solarflare.com>2011-01-19 11:03:53 +0000
committerDavid S. Miller <davem@davemloft.net>2011-01-24 14:53:01 -0800
commitc445477d74ab3779d1386ab797fbb9b628eb9f64 (patch)
tree3ee70b7748c6c63a688f367e5ffd83fde21b87e3 /net/Kconfig
parentc39649c331c70952700f99832b03f87e9d7f5b4b (diff)
downloadlinaro-lsk-c445477d74ab3779d1386ab797fbb9b628eb9f64.tar.gz
net: RPS: Enable hardware acceleration of RFS
Allow drivers for multiqueue hardware with flow filter tables to accelerate RFS. The driver must: 1. Set net_device::rx_cpu_rmap to a cpu_rmap of the RX completion IRQs (in queue order). This will provide a mapping from CPUs to the queues for which completions are handled nearest to them. 2. Implement net_device_ops::ndo_rx_flow_steer. This operation adds or replaces a filter steering the given flow to the given RX queue, if possible. 3. Periodically remove filters for which rps_may_expire_flow() returns true. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/Kconfig')
-rw-r--r--net/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/Kconfig b/net/Kconfig
index 72840626284..79cabf1ee68 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -221,6 +221,12 @@ config RPS
depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
default y
+config RFS_ACCEL
+ boolean
+ depends on RPS && GENERIC_HARDIRQS
+ select CPU_RMAP
+ default y
+
config XPS
boolean
depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS