[PATCH v5 2/2] doc: add introduction for fm10k FTAG based forwarding
From: Wang Xiao W <hidden>
Date: 2016-03-02 11:19:29
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add a brief introduction on FTAG, describe what's FTAG and how it works in forwarding. Signed-off-by: Wang Xiao W <redacted> --- doc/guides/nics/fm10k.rst | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/doc/guides/nics/fm10k.rst b/doc/guides/nics/fm10k.rst
index dc5cb6e..89d6ae2 100644
--- a/doc/guides/nics/fm10k.rst
+++ b/doc/guides/nics/fm10k.rst@@ -1,5 +1,5 @@ .. BSD LICENSE - 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 +34,20 @@ 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, the user should pass a devargs parameter to the eal +like "-w 84:00.0,enable_ftag=1", and the application should make sure an +appropriate FTAG is inserted for every frame on TX side. Limitations -----------
--
1.9.3