X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fnics%2Fpcap_ring.rst;h=c1ef9196bfa0ac17759b0a81338048a139b945ad;hb=d74111a9a1e64688208a41c487ee9908d920f20a;hp=7fd063c94575d5599c7d1bb4d58d24496b81b505;hpb=380818b3182b1d7dad5440f8e821852a84162ff0;p=dpdk.git

diff --git a/doc/guides/nics/pcap_ring.rst b/doc/guides/nics/pcap_ring.rst
index 7fd063c945..c1ef9196bf 100644
--- a/doc/guides/nics/pcap_ring.rst
+++ b/doc/guides/nics/pcap_ring.rst
@@ -71,11 +71,19 @@ The different stream types are:
         tx_pcap=/path/to/file.pcap
 
 *   rx_iface: Defines a reception stream based on a network interface name.
-    The driver reads packets coming from the given interface using the Linux kernel driver for that interface.
+    The driver reads packets from the given interface using the Linux kernel driver for that interface.
+    The driver captures both the incoming and outgoing packets on that interface.
     The value is an interface name.
 
         rx_iface=eth0
 
+*   rx_iface_in: Defines a reception stream based on a network interface name.
+    The driver reads packets from the given interface using the Linux kernel driver for that interface.
+    The driver captures only the incoming packets on that interface.
+    The value is an interface name.
+
+        rx_iface_in=eth0
+
 *   tx_iface: Defines a transmission stream based on a network interface name.
     The driver sends packets to the given interface using the Linux kernel driver for that interface.
     The value is an interface name.
@@ -88,6 +96,16 @@ The different stream types are:
 
         iface=eth0
 
+Runtime Config Options
+^^^^^^^^^^^^^^^^^^^^^^
+
+- Use PCAP interface physical MAC
+
+ In case ``iface=`` configuration is set, user may want to use the selected interface's physical MAC
+ address. This can be done with a ``devarg`` ``phy_mac``, for example::
+
+   --vdev 'net_pcap0,iface=eth0,phy_mac=1'
+
 Examples of Usage
 ^^^^^^^^^^^^^^^^^
 
@@ -122,6 +140,21 @@ Forward packets through two network interfaces:
     $RTE_TARGET/app/testpmd -l 0-3 -n 4 \
         --vdev 'net_pcap0,iface=eth0' --vdev='net_pcap1;iface=eth1'
 
+Enable 2 tx queues on a network interface:
+
+.. code-block:: console
+
+    $RTE_TARGET/app/testpmd -l 0-3 -n 4 \
+        --vdev 'net_pcap0,rx_iface=eth1,tx_iface=eth1,tx_iface=eth1' \
+        -- --txq 2
+
+Read only incoming packets from a network interface and write them back to the same network interface:
+
+.. code-block:: console
+
+    $RTE_TARGET/app/testpmd -l 0-3 -n 4 \
+        --vdev 'net_pcap0,rx_iface_in=eth1,tx_iface=eth1'
+
 Using libpcap-based PMD with the testpmd Application
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^