X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Ftools%2Fpdump.rst;h=6f9bd77ab135607bf1855e7d3d2bd3c5bcfd073c;hb=bc778a17fa46f1ec69180c7f660585155eefc318;hp=7c2b73e72819b7187aa7aeef1db7fbdc1a788893;hpb=89745a4ce7fbf3817d0a96e18585079b0d9e60ec;p=dpdk.git

diff --git a/doc/guides/tools/pdump.rst b/doc/guides/tools/pdump.rst
index 7c2b73e728..6f9bd77ab1 100644
--- a/doc/guides/tools/pdump.rst
+++ b/doc/guides/tools/pdump.rst
@@ -19,12 +19,12 @@ a DPDK secondary process and is capable of enabling packet capture on dpdk ports
         framework initialization code. Refer ``app/test-pmd/testpmd.c``
         code to see how this is done.
 
-      * The ``dpdk-pdump`` tool depends on libpcap based PMD which is disabled
-        by default in the build configuration files,
-        owing to an external dependency on the libpcap development files
-        which must be installed on the board.
-        Once the libpcap development files are installed, the libpcap based PMD
-        can be enabled by setting CONFIG_RTE_LIBRTE_PMD_PCAP=y and recompiling the DPDK.
+      * The ``dpdk-pdump`` tool depends on DPDK pcap PMD, so the system should
+        have libpcap development files installed and the pcap PMD not disabled
+        in the build.
+
+      * The ``dpdk-pdump`` tool runs as a DPDK secondary process. It exits when
+        the primary application exits.
 
 
 Running the Application
@@ -34,7 +34,8 @@ The tool has a number of command line options:
 
 .. code-block:: console
 
-   ./build/app/dpdk-pdump --
+   ./<build_dir>/app/dpdk-pdump --
+                          [--multi]
                           --pdump '(port=<port id> | device_id=<pci id or vdev name>),
                                    (queue=<queue_id>),
                                    (rx-dev=<iface or pcap file> |
@@ -43,6 +44,10 @@ The tool has a number of command line options:
                                    [mbuf-size=<mbuf data size>],
                                    [total-num-mbufs=<number of mbufs>]'
 
+The ``--multi`` command line option is optional argument. If passed, capture
+will be running on unique cores for all ``--pdump`` options. If ignored,
+capture will be running on single core for all ``--pdump`` options.
+
 The ``--pdump`` command line option is mandatory and it takes various sub arguments which are described in
 below section.
 
@@ -112,4 +117,5 @@ Example
 
 .. code-block:: console
 
-   $ sudo ./build/app/dpdk-pdump -- --pdump 'port=0,queue=*,rx-dev=/tmp/rx.pcap'
+   $ sudo ./<build_dir>/app/dpdk-pdump -l 3 -- --pdump 'port=0,queue=*,rx-dev=/tmp/rx.pcap'
+   $ sudo ./<build_dir>/app/dpdk-pdump -l 3,4,5 -- --multi --pdump 'port=0,queue=*,rx-dev=/tmp/rx-1.pcap' --pdump 'port=1,queue=*,rx-dev=/tmp/rx-2.pcap'