[PATCH v3] net/mlx5: fix flow workspace destruction

[Raslan Darawsheh]

Hi,

> -----Original Message-----
> From: Bing Zhao <bingz at nvidia.com>
> Sent: Monday, July 3, 2023 12:51 PM
> To: Matan Azrad <matan at nvidia.com>; Slava Ovsiienko
> <viacheslavo at nvidia.com>; Ori Kam <orika at nvidia.com>; Suanming Mou
> <suanmingm at nvidia.com>; Raslan Darawsheh <rasland at nvidia.com>
> Cc: dev at dpdk.org; Gregory Etelson <getelson at nvidia.com>;
> stable at dpdk.org; David Marchand <david.marchand at redhat.com>
> Subject: [PATCH v3] net/mlx5: fix flow workspace destruction
> 
> From: Gregory Etelson <getelson at nvidia.com>
> 
> PMD uses pthread key to allocate and access per thread flow workspace
> memory buffers.
> 
> PMD registered a key destructor function to clean up flow workspace buffers.
> However, the key destructor was not called by the pthread library.
> 
> The patch keeps track of per-thread flow workspaces in PMD.
> Flow workspaces memory release is activated from PMD destructor.
> 
> In the meanwhile, workspace buffer and RSS queues array are allocated in a
> single memory chunk with this patch. The maximal number of queues
> RTE_ETH_RSS_RETA_SIZE_512 is chosen. Then the workspace adjustment can
> be removed to reduce the software hiccup:
>   1. realloc and content copy
>   2. spinlock acquire and release
> 
> Bugzilla ID: 1255
> 
> Fixes: 5d55a494f4e6 ("net/mlx5: split multi-thread flow handling per OS")
> Cc: stable at dpdk.org
> 
> Reported-by: David Marchand <david.marchand at redhat.com>
> Signed-off-by: Gregory Etelson <getelson at nvidia.com>
> Signed-off-by: Bing Zhao <bingz at nvidia.com>
> Acked-by: Matan Azrad <matan at nvidia.com>
> ---
> v2: fix typo and code style
> v3: add bugzilla information

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh