[dpdk-dev] [PATCH v3 3/3] doc: update release notes and testpmd guide

[Helin Zhang <helin.zhang@intel.com>]

Update release notes with the newly added feature of selecting
different GRE key length for input set, and testpmd guide with
newly added commands for that.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
---
 doc/guides/rel_notes/release_2_2.rst        |  2 ++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 8fc8917..7b4b97e 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -25,6 +25,8 @@ New Features
 
 * **Added RSS/FD input set granularity on Intel X710/XL710.**
 
+* **Added selecting different GRE key length for input set on Intel X710/XL710.**
+
 
 Resolved Issues
 ---------------
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index f5951c0..5ed7c66 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -1810,3 +1810,14 @@ Set the input set for Fdir::
 For example to add source IP to FD input set for flow type of ipv4 on port 0::
 
    testpmd> set_fdir_input_set 0 ipv4 src-ipv4 add
+
+global_config
+~~~~~~~~~~~~~
+
+Set different GRE key length for input set::
+
+   global_config (port_id) gre-key-len (number in bytes)
+
+For example to set GRE key length for input set to 4 bytes on port 0::
+
+   testpmd> global_config 0 gre-key-len 4
-- 
1.9.3