update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / spdk / dpdk / doc / guides / nics / pcap_ring.rst

diff --git a/ceph/src/spdk/dpdk/doc/guides/nics/pcap_ring.rst b/ceph/src/spdk/dpdk/doc/guides/nics/pcap_ring.rst
index c1ef9196bfa0ac17759b0a81338048a139b945ad..cf230ae40ac2722e08bd6bf7d8996b6cf7a7ee82 100644 (file)
--- a/ceph/src/spdk/dpdk/doc/guides/nics/pcap_ring.rst
+++ b/ceph/src/spdk/dpdk/doc/guides/nics/pcap_ring.rst
@@ -106,6 +106,34 @@ Runtime Config Options
 
    --vdev 'net_pcap0,iface=eth0,phy_mac=1'
 
+- Use the RX PCAP file to infinitely receive packets
+
+ In case ``rx_pcap=`` configuration is set, user may want to use the selected PCAP file for rudimental
+ performance testing. This can be done with a ``devarg`` ``infinite_rx``, for example::
+
+   --vdev 'net_pcap0,rx_pcap=file_rx.pcap,infinite_rx=1'
+
+ When this mode is used, it is recommended to drop all packets on transmit by not providing a tx_pcap or tx_iface.
+
+ This option is device wide, so all queues on a device will either have this enabled or disabled.
+ This option should only be provided once per device.
+
+- Drop all packets on transmit
+
+ The user may want to drop all packets on tx for a device. This can be done by not providing a tx_pcap or tx_iface, for example::
+
+   --vdev 'net_pcap0,rx_pcap=file_rx.pcap'
+
+ In this case, one tx drop queue is created for each rxq on that device.
+
+ - Receive no packets on Rx
+
+ The user may want to run without receiving any packets on Rx. This can be done by not providing a rx_pcap or rx_iface, for example::
+
+   --vdev 'net_pcap0,tx_pcap=file_tx.pcap'
+
+In this case, one dummy rx queue is created for each tx queue argument passed
+
 Examples of Usage
 ^^^^^^^^^^^^^^^^^