On 11/9/2021 9:42 AM, psathe...@marvell.com wrote:
From: Satheesh Paul <psathe...@marvell.com>
This patch adds support to configure channel mask which will
be used by rte flow when adding flow rules on SDP interfaces.
Hi Satheesh,
+ Ori & Andrew.
What 'SDP' stands for?
And can this new devarg be provided with flow rule? Why it needs to be a new
devarg?
Can you please give a sample of the rte flow API that will be used?
Thanks,
ferruh
Signed-off-by: Satheesh Paul <psathe...@marvell.com>
---
doc/guides/nics/cnxk.rst | 21 ++++++++++++++
drivers/net/cnxk/cnxk_ethdev_devargs.c | 40 ++++++++++++++++++++++++--
2 files changed, 59 insertions(+), 2 deletions(-)
diff --git a/doc/guides/nics/cnxk.rst b/doc/guides/nics/cnxk.rst
index 837ffc02b4..470e01b811 100644
--- a/doc/guides/nics/cnxk.rst
+++ b/doc/guides/nics/cnxk.rst
@@ -276,6 +276,27 @@ Runtime Config Options
set with this custom mask, inbound encrypted traffic from all ports with
matching channel number pattern will be directed to the inline IPSec
device.
+- ``SDP device channel and mask`` (default ``none``)
+ Set channel and channel mask configuration for the SDP device. This
+ will be used when creating flow rules on the SDP device.
+
+ By default, for rules created on the SDP device, the RTE Flow API sets the
+ channel number and mask to cover the entire SDP channel range in the channel
+ field of the MCAM entry. This behaviour can be modified using the
+ ``sdp_channel_mask`` ``devargs`` parameter.
+
+ For example::
+
+ -a 0002:1d:00.0,sdp_channel_mask=0x700/0xf00
+
+ With the above configuration, RTE Flow rules API will set the channel
+ and channel mask as 0x700 and 0xF00 in the MCAM entries of the flow rules
+ created on the SDP device. This option needs to be used when more than one
+ SDP interface is in use and RTE Flow rules created need to distinguish
+ between traffic from each SDP interface. The channel and mask combination
+ specified should match all the channels(or rings) configured on the SDP
+ interface.
+
.. note::
<...>
