Add a brief introduction on FTAG, describes what's FTAG and how it works in forwarding, introduction on how to run fm10k with FTAG is also included.
Signed-off-by: Wang Xiao W <xiao.w.wang at intel.com> --- doc/guides/nics/fm10k.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/guides/nics/fm10k.rst b/doc/guides/nics/fm10k.rst index 4206b7f..d82bf41 100644 --- a/doc/guides/nics/fm10k.rst +++ b/doc/guides/nics/fm10k.rst @@ -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, the vlan tag. In FTAG based forwarding +mode, the switch logic forwards packets according to glort (global resource tag) +information, other than the mac and vlan table. Now this feature works only on +PF. + +To enable this feature, turn CONFIG_RTE_LIBRTE_FM10K_FTAG_FWD to y in the +configuration file. A unit test case fm10k_ftag_autotest is for reference, it shows +how to read sglort info on RX and how to make an FTAG on TX. Limitations ----------- -- 1.9.3
