[PATCH] net/mlx5: fix partial inline of fine grain packets

[Raslan Darawsheh]

Hi,

> -----Original Message-----
> From: Dariusz Sosnowski <dsosnowski at nvidia.com>
> Sent: Wednesday, November 17, 2021 11:51 AM
> To: Matan Azrad <matan at nvidia.com>; Slava Ovsiienko
> <viacheslavo at nvidia.com>
> Cc: dev at dpdk.org; stable at dpdk.org
> Subject: [PATCH] net/mlx5: fix partial inline of fine grain packets
> 
> Assuming a user tried to send multi-segment packets, with
> RTE_PMD_MLX5_FINE_GRANULARITY_INLINE flag set, using a device with
> minimum inlining requirements (such as ConnectX-4 Lx or when user
> specified them explicitly), sending such packets caused segfault.
> Segfault was caused by failed invariants in mlx5_tx_packet_multi_inline
> function.
> 
> This patch introduces a logic for multi-segment packets, with
> RTE_PMD_MLX5_FINE_GRANULARITY_INLINE flag set, to omit mbuf
> scanning for filling inline buffer and inline only minimal amount of data
> required.
> 
> Fixes: ec837ad0fc7c ("net/mlx5: fix multi-segment inline for the first
> segments")
> Cc: viacheslavo at nvidia.com
> Cc: stable at dpdk.org

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh