[dpdk-dev] [PATCH 2/3] doc: add introduction for fm10k FTAG based forwarding

Wang Xiao W xiao.w.wang at intel.com
Mon Jan 25 09:07:30 CET 2016

Add a brief introduction on FTAG, describe what's FTAG and how it works
in forwarding.

Signed-off-by: Wang Xiao W <xiao.w.wang at intel.com>
 doc/guides/nics/fm10k.rst | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/fm10k.rst b/doc/guides/nics/fm10k.rst
index 4206b7f..0f85e8c 100644
--- a/doc/guides/nics/fm10k.rst
+++ b/doc/guides/nics/fm10k.rst
@@ -1,5 +1,5 @@
-    Copyright(c) 2015 Intel Corporation. All rights reserved.
+    Copyright(c) 2015-2016 Intel Corporation. All rights reserved.
     All rights reserved.
     Redistribution and use in source and binary forms, with or without
@@ -34,6 +34,19 @@ FM10K Poll Mode Driver
 The FM10K poll mode driver library provides support for the Intel FM10000
 (FM10K) family of 40GbE/100GbE adapters.
+FTAG Based Forwarding of FM10K
+FTAG Based Forwarding is a unique feature of FM10K. The FM10K family of NICs
+support the addition of a Fabric Tag (FTAG) to carry special information.
+The FTAG is placed at the beginning of the frame, it contains information such
+as where the packet comes from and goes, and the vlan tag. In FTAG based forwarding
+mode, the switch logic forwards packets according to glort (global resource tag)
+information, rather than the mac and vlan table. Currently this feature works only
+on PF.
+To enable this feature, turn ``CONFIG_RTE_LIBRTE_FM10K_FTAG_FWD`` to y in the
+configuration file.

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