On 22 Aug 2019, at 0:48, William Tu wrote:
Add command lines for using DPDK's AF_XDP PMD driver.
Signed-off-by: William Tu <u9012...@gmail.com>
---
Documentation/intro/install/afxdp.rst | 36
+++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/Documentation/intro/install/afxdp.rst
b/Documentation/intro/install/afxdp.rst
index 820e9d993d8f..c3e03b40f3b5 100644
--- a/Documentation/intro/install/afxdp.rst
+++ b/Documentation/intro/install/afxdp.rst
@@ -426,6 +426,42 @@ In the namespace, run drop or bounce back the
packet::
ip netns exec at_ns0 ./xdp_rxq_info --dev p0 --action XDP_TX
+Using DPDK's AF_XDP PMD driver
+------------------------------
+Another way to use AF_XDP is to enable DPDK and use DPDK's AF_XDP
+driver. First, enable the AF_XDP PMD config at DPDK's
+config/common_base file by::
+
+ CONFIG_RTE_LIBRTE_PMD_AF_XDP=y
+
+and recompile the DPDK source. Then, compile OVS with DPDK::
+
+ ./configure --with-dpdk=<patch to dpdk build>
+
Looks good, but maybe add a reference to
Documentation/intro/install/dpdk.rst?
+Start ovs-vswitchd and initilize DPDK::
+
+ ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
+
+Finally, assume eth2 and eth3 are the physical NIC, AF_XDP port can
+be added by::
+
+ ovs-vsctl add-port br0 afxdp-p0 -- set int afxdp-p0 type=dpdk \
+ options:dpdk-devargs=vdev:net_af_xdp0,iface=eth2 \
+ start_queue=0,queue_count=1
+ ovs-vsctl add-port br0 afxdp-p1 -- set int afxdp-p1 type=dpdk \
+ options:dpdk-devargs=vdev:net_af_xdp1,iface=eth3 \
+ start_queue=0,queue_count=1
+
+Execute ovs-vsctl show::
+
+ Bridge "br0"
+ datapath_type: netdev
+ Port "afxdp-p0"
+ Interface "afxdp-p0"
+ type: dpdk
+ options: {dpdk-devargs="vdev:net_af_xdp,iface=eth2"}
+
+
Bug Reporting
-------------
--
2.7.4
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