diff options
| author | David S. Miller <davem@davemloft.net> | 2015-12-16 18:59:05 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-12-16 18:59:05 +0300 |
| commit | 897ca373be8461efc880cc3288ffcbc2e1fa03b0 (patch) | |
| tree | 25ec23b5c389cda057a187a592012bea268114bb /drivers/net/ethernet/intel/Kconfig | |
| parent | 566178f853c1aa57be9c16007c7cca07df5d51b6 (diff) | |
| parent | cd866606c91b1e99517fd866de0049276f011ea7 (diff) | |
| download | linux-897ca373be8461efc880cc3288ffcbc2e1fa03b0.tar.xz | |
Merge branch 'geneve-udp-port-offload'
Anjali Singhai Jain says:
====================
Add support for Geneve udp port offload
This patch series adds new ndo ops for Geneve add/del port, so as
to help offload Geneve tunnel functionalities such as RX checksum,
RSS, filters etc.
i40e driver has been tested with the changes to make sure the offloads
happen.
We do understand that this is not the ideal solution and most likely
will be redone with a more generic offload framework.
But this certainly will enable us to start seeing benefits of the
accelerations for Geneve tunnels.
As a side note, we did find an existing issue in i40e driver where a
service task can modify tunnel data structures with no locks held to
help linearize access. A separate patch will be taking care of that issue.
A question out to the community is regarding the driver Kconfig parameters
for VxLAN and Geneve, it would be ideal to drop those if there is a way
to help resolve vxlan/geneve_get_rx_port symbols while the tunnel modules
are not loaded.
Performance numbers:
With the offloads enable on X722 devices with remote checksum enabled
and no other tuning in terms of cpu governer etc on my test machine:
With offload
Throughput: 5527Mbits/sec with a single thread
%cpu: ~43% per core with 4 threads
Without offload
Throughput: 2364Mbits/sec with a single thread
%cpu: ~99% per core with 4 threads
These numbers will get better for X722 as it is being worked. But
this does bring out the delta in terms of when the stack is notified
with csum_level 1 and CHECKSUM_UNNECESSARY vs not without the RX offload.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/Kconfig')
| -rw-r--r-- | drivers/net/ethernet/intel/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig index 4163b16489b3..fa593dd3efe1 100644 --- a/drivers/net/ethernet/intel/Kconfig +++ b/drivers/net/ethernet/intel/Kconfig @@ -280,6 +280,16 @@ config I40E_VXLAN Say Y here if you want to use Virtual eXtensible Local Area Network (VXLAN) in the driver. +config I40E_GENEVE + bool "Generic Network Virtualization Encapsulation (GENEVE) Support" + depends on I40E && GENEVE && !(I40E=y && GENEVE=m) + default n + ---help--- + This allows one to create GENEVE virtual interfaces that provide + Layer 2 Networks over Layer 3 Networks. GENEVE is often used + to tunnel virtual network infrastructure in virtualized environments. + Say Y here if you want to use GENEVE in the driver. + config I40E_DCB bool "Data Center Bridging (DCB) Support" default n |