[PATCH v3] net/af_packet: cache align Rx/Tx structs

[Tyler Retzlaff]

On Fri, Apr 26, 2024 at 11:05:02AM +0200, Mattias Rönnblom wrote:
> Cache align Rx and Tx queue struct to avoid false sharing.
> 
> The RX struct happens to be 64 bytes on x86_64 already, so cache
> alignment has no effect there, but it does on 32-bit ISAs.
> 
> The TX struct is 56 bytes on x86_64.
> 
> Both structs keep counters, and in the RX case they are updated even
> for empty polls.
> 
> v3: Move __rte_cache_aligned directive to a MSVC-compatible location.
> 
> Fixes: 364e08f2bbc0 ("af_packet: add PMD for AF_PACKET-based virtual devices")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Mattias Rönnblom <mattias.ronnblom at ericsson.com>
> ---
Acked-by: Tyler Retzlaff <roretzla at linux.microsoft.com>