[EXT] Re: [PATCH 20.11] net/octeontx2: fix flow MCAM priority management

[Satheesh Paul]

Hi,

Yes, the issue is specific to 20.11. On main branch this part of the code has been fully rewritten. (1f66919817 common/cnxk: improve MCAM entries management).
This is now backported with this patch to address the issue.

Thanks,
Satheesh. 

-----Original Message-----
From: Luca Boccassi <bluca at debian.org> 
Sent: 15 March 2022 05:14 PM
To: Satheesh Paul <psatheesh at marvell.com>; Jerin Jacob Kollanukkaran <jerinj at marvell.com>; Nithin Kumar Dabilpuram <ndabilpuram at marvell.com>; Kiran Kumar Kokkilagadda <kirankumark at marvell.com>
Cc: stable at dpdk.org
Subject: [EXT] Re: [PATCH 20.11] net/octeontx2: fix flow MCAM priority management

External Email

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On Tue, 2022-03-15 at 09:46 +0530, psatheesh at marvell.com wrote:
> From: Satheesh Paul <psatheesh at marvell.com>
> 
> This patch fixes issues in rearranging the MCAM entries when user is 
> creating flows with priority levels.
> The MCAM preallocation scheme and the free entry cache are removed. 
> For every flow created, an MCAM allocation request is made to the 
> kernel. Each priority level has a list of MCAM entries. For every flow 
> rule added, the MCAM entry obtained from kernel is checked if it is at 
> the correct user specified priority. If not, the existing rules are 
> moved across MCAM entries so that the user specified priority is 
> maintained.
> 
> Fixes: 29a2017c70 ("net/octeontx2: add flow mbox utility functions")
> 
> Signed-off-by: Satheesh Paul <psatheesh at marvell.com>
> ---
>  drivers/net/octeontx2/otx2_flow.c       | 145 +----
>  drivers/net/octeontx2/otx2_flow.h       |  33 +-
>  drivers/net/octeontx2/otx2_flow_utils.c | 717 
> ++++++++++++------------
>  3 files changed, 405 insertions(+), 490 deletions(-)

Hi,

I don't see this patch on main - is it a bug specific to 20.11?

--
Kind regards,
Luca Boccassi