[dpdk-dev] [PATCH 1/2] doc: add pcap dependency note to pdump tool guide

[Reshma Pattan <reshma.pattan@intel.com>]

Added a missing note about dependencies on libpcap and
CONFIG_RTE_LIBRTE_PMD_PCAP flag that pdump tool has.

Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
---
 doc/guides/sample_app_ug/pdump.rst | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/doc/guides/sample_app_ug/pdump.rst b/doc/guides/sample_app_ug/pdump.rst
index 96c8709..32d4fbc 100644
--- a/doc/guides/sample_app_ug/pdump.rst
+++ b/doc/guides/sample_app_ug/pdump.rst
@@ -33,14 +33,21 @@
 dpdk_pdump Application
 ======================
 
-The ``dpdk_pdump`` application is a Data Plane Development Kit (DPDK) application that runs as a DPDK secondary process and
+The ``dpdk_pdump`` tool is a Data Plane Development Kit (DPDK) tool that runs as a DPDK secondary process and
 is capable of enabling packet capture on dpdk ports.
 
+   .. Note::
+
+      * 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.
+
 
 Running the Application
 -----------------------
 
-The application has a ``--pdump`` command line option with various sub arguments:
+The tool has a ``--pdump`` command line option with various sub arguments:
 
 .. code-block:: console
 
-- 
2.5.0