[ovs-dev] [PATCH v9 7/7] Documentation: document ovs-dpdk flow offload

Shahaf Shuler shahafs at mellanox.com
Tue Apr 17 11:40:13 UTC 2018


From: Yuanhan Liu <yliu at fridaylinux.org>

Add details in the DPDK howto guide on the way to enable the offload along
with the supported NICs and flow types.

The flow offload is marked as experimental.

Signed-off-by: Yuanhan Liu <yliu at fridaylinux.org>
Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
---
 Documentation/howto/dpdk.rst | 22 ++++++++++++++++++++++
 NEWS                         |  3 ++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/Documentation/howto/dpdk.rst b/Documentation/howto/dpdk.rst
index 79b626c..c5794bc 100644
--- a/Documentation/howto/dpdk.rst
+++ b/Documentation/howto/dpdk.rst
@@ -739,3 +739,25 @@ devices to bridge ``br0``. Once complete, follow the below steps:
    Check traffic on multiple queues::
 
        $ cat /proc/interrupts | grep virtio
+
+.. _dpdk-flow-hardware-offload:
+
+Flow Hardware Offload (Experimental)
+------------------------------------
+
+The flow hardware offload is disabled by default and can be enabled by::
+
+    $ ovs-vsctl set Open_vSwitch . other_config:hw-offload=true
+
+So far only partial flow offload is implemented. Moreover, it only works
+with PMD drivers have the rte_flow action "MARK + RSS" support.
+
+The validated NICs are:
+
+- Mellanox (ConnectX-4, ConnectX-4 Lx, ConnectX-5)
+- Napatech (NT200B01)
+
+Supported protocols for hardware offload are:
+- L2: Ethernet, VLAN
+- L3: IPv4, IPv6
+- L4: TCP, UDP, SCTP, ICMP
diff --git a/NEWS b/NEWS
index 77c2b43..52004f6 100644
--- a/NEWS
+++ b/NEWS
@@ -22,6 +22,8 @@ Post-v2.9.0
        other IPv4/IPv6-based protocols whenever a reject ACL rule is hit.
      * ACL match conditions can now match on Port_Groups as well as address
        sets that are automatically generated by Port_Groups.
+   - DPDK:
+     * Add experimental flow hardware offload support
 
 v2.9.0 - 19 Feb 2018
 --------------------
@@ -85,7 +87,6 @@ v2.9.0 - 19 Feb 2018
      * New appctl command 'dpif-netdev/pmd-rxq-rebalance' to rebalance rxq to
        pmd assignments.
      * Add rxq utilization of pmd to appctl 'dpif-netdev/pmd-rxq-show'.
-     * Add support for vHost dequeue zero copy (experimental)
    - Userspace datapath:
      * Output packet batching support.
    - vswitchd:
-- 
2.7.4



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