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

[Ferruh Yigit]

On 4/25/2024 4:08 PM, Mattias Rönnblom wrote:
> On 2024-04-25 16:08, Ferruh Yigit wrote:
>> On 4/23/2024 12:15 PM, Ferruh Yigit wrote:
>>>> Signed-off-by: Mattias Rönnblom <mattias.ronnblom at ericsson.com>
>>>> ---
>>>>   drivers/net/af_packet/rte_eth_af_packet.c | 5 +++--
>>>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/drivers/net/af_packet/rte_eth_af_packet.c
>>>> b/drivers/net/af_packet/rte_eth_af_packet.c
>>>> index 397a32db58..28aeb7d08e 100644
>>>> --- a/drivers/net/af_packet/rte_eth_af_packet.c
>>>> +++ b/drivers/net/af_packet/rte_eth_af_packet.c
>>>> @@ -6,6 +6,7 @@
>>>>    * All rights reserved.
>>>>    */
>>>>   +#include <rte_common.h>
>>>>   #include <rte_string_fns.h>
>>>>   #include <rte_mbuf.h>
>>>>   #include <ethdev_driver.h>
>>>> @@ -53,7 +54,7 @@ struct pkt_rx_queue {
>>>>         volatile unsigned long rx_pkts;
>>>>       volatile unsigned long rx_bytes;
>>>> -};
>>>> +} __rte_cache_aligned;
>>>>   
>>> Latest location for '__rte_cache_aligned' tag is at the beginning of the
>>> struct [1], so something like:
>>> `struct __rte_cache_aligned pkt_rx_queue {`
>>>
>>> [1]
>>> https://patchwork.dpdk.org/project/dpdk/list/?series=31746&state=%2A&archive=both
>>>
>>
>> Hi Mattias,
>>
>> We dived into side discussions but with above change I can proceed with
>> the patch.
> 
> OK.
> 
> Should this go into some stable branch as well?
>

I don't see any reason for not merging to stable trees. For this please
add fixes and stable tags.