[dpdk-dev] [PATCH v2] doc: update application minimum requirement info

[Vipin Varghese <vipin.varghese@intel.com>]

Added note section to update information for use cases working with
multiple crypto devices.

Signed-off-by: Vipin Varghese <vipin.varghese@intel.com>
---

V2 changes:
 - updated the title from 'info on multi crypto instances' - Pablo
 - reframed affirmative word 'should' to 'shall' - pablo
---
 doc/guides/sample_app_ug/l2_forward_crypto.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/guides/sample_app_ug/l2_forward_crypto.rst b/doc/guides/sample_app_ug/l2_forward_crypto.rst
index 1e85b4a..fddfd1b 100644
--- a/doc/guides/sample_app_ug/l2_forward_crypto.rst
+++ b/doc/guides/sample_app_ug/l2_forward_crypto.rst
@@ -199,6 +199,14 @@ To run the application in linuxapp environment with 2 lcores, 2 ports and 2 cryp
 Refer to the *DPDK Getting Started Guide* for general information on running applications
 and the Environment Abstraction Layer (EAL) options.
 
+.. Note::
+
+    * The ``l2fwd-crypto`` sample application requires IPv4 packets for crypto operation.
+
+    * If multiple Ethernet ports is passed, then equal number of crypto devices are to be passed.
+
+    * All crypto devices shall use the same session.
+
 Explanation
 -----------
 
-- 
1.9.1