[PATCH v3 1/2] net/mlx5: improve socket file path handling

[Moses Young]

On 8/30/2025 3:57 AM, Stephen Hemminger wrote:
> On Fri, 29 Aug 2025 22:49:52 +0800
> Yang Ming<mosesyyoung at gmail.com> wrote:
>
>> The current implementation hardcodes the socket file path to
>> /var/tmp, which has two issues:
>>
>> 1. Hardcoding absolute paths is not good practice.
>> 2. /var/tmp may not be writable in containerized or restricted
>>     environments (e.g. when the filesystem is mounted read-only).
>>
>> This patch replaces the hardcoded path with a socket file name
>> (MLX5_SOCKET_FNAME) located in the DPDK runtime directory
>> returned by rte_eal_get_runtime_dir(). This ensures the socket
>> file can be created in both normal and containerized
>> environments, while maintaining uniqueness by appending the
>> process ID.
>>
>> Acked-by: Dariusz Sosnowski<dsosnowski at nvidia.com>
>>
>> Signed-off-by: Yang Ming<mosesyyoung at gmail.com>
>> ---
> Rather driver specific logging, why is there not a way in EAL log
> library to ope a diagnostic dump.

Hi,

Thanks for your comment. This patch is mainly an adaptation for
our product, which runs in container environments with read-only
filesystems. The goal is simply to remove the hard-coded /var/tmp
path while keeping backward compatibility with existing test cases.

I agree that having a generic EAL facility for diagnostic dumps
would make sense in the longer term. However, I believe such
further development should be handled by the mlx5 driver
maintainers (Mellanox/NVIDIA), while this patch focuses only on
the immediate portability fix.

Brs,
Yang Ming
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