[dpdk-dev] [PATCH 28/28] doc: update MLX5 doc and release notes with LRO

[Matan Azrad <matan@mellanox.com>]

From: Dekel Peled <dekelp@mellanox.com>

Add documentation of LRO feature.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
---
 doc/guides/nics/features/mlx5.ini      |  1 +
 doc/guides/nics/mlx5.rst               | 14 ++++++++++++++
 doc/guides/rel_notes/release_19_08.rst |  2 +-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/features/mlx5.ini b/doc/guides/nics/features/mlx5.ini
index f7e7358..c0ebdbd 100644
--- a/doc/guides/nics/features/mlx5.ini
+++ b/doc/guides/nics/features/mlx5.ini
@@ -13,6 +13,7 @@ Queue start/stop     = Y
 MTU update           = Y
 Jumbo frame          = Y
 Scattered Rx         = Y
+LRO                  = Y
 TSO                  = Y
 Promiscuous mode     = Y
 Allmulticast mode    = Y
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 7e87344..85d96be 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -82,6 +82,7 @@ Features
   increment/decrement, count, drop, mark. For details please see :ref:`Supported hardware offloads using rte_flow API`.
 - Flow insertion rate of more then million flows per second, when using Direct Rules.
 - Support for multiple rte_flow groups.
+- Hardware LRO.
 
 Limitations
 -----------
@@ -162,6 +163,11 @@ Limitations
 
 - ICMP/ICMP6 code/type matching cannot be supported togeter with IP-in-IP tunnel.
 
+- LRO:
+
+  - No mbuf head-room space is created for RX packets when LRO is configured.
+  - scatter_fcs is disabled  when LRO is configured.
+
 Statistics
 ----------
 
@@ -556,6 +562,14 @@ Run-time configuration
 
   set to 128 by default.
 
+- ``lro_timeout_usec`` parameter [int]
+
+  The maximum allowed duration of an LRO session, in micro-seconds.
+  PMD will set the nearest value supported by HW, which is not bigger than
+  the input lro_timeout_usec value.
+  If this parameter is not specified, by default PMD will set the smallest value
+  supported by HW.
+
 Firmware configuration
 ~~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/doc/guides/rel_notes/release_19_08.rst b/doc/guides/rel_notes/release_19_08.rst
index 6c382cb..d8676b6 100644
--- a/doc/guides/rel_notes/release_19_08.rst
+++ b/doc/guides/rel_notes/release_19_08.rst
@@ -117,7 +117,7 @@ New Features
   * Accelerate flows with count action creation and destroy.
   * Accelerate flows counter query.
   * Improve Tx datapath improves performance with enabled HW offloads.
-
+  * Added support for LRO.
 
 * **Updated Solarflare network PMD.**
 
-- 
1.8.3.1