[PATCH v2] app/testpmd: fix crash in multi-process packet forwarding

[Ferruh Yigit]

On 1/30/2024 1:32 AM, Dengdui Huang wrote:
> On multi-process scenario, each process creates flows based on the
> number of queues. When nbcore is greater than 1, multiple cores may
> use the same queue to forward packet, like:
> dpdk-testpmd -a BDF --proc-type=auto -- -i --rxq=4 --txq=4
> --nb-cores=2 --num-procs=2 --proc-id=0
> testpmd> start
> mac packet forwarding - ports=1 - cores=2 - streams=4 - NUMA support
> enabled, MP allocation mode: native
> Logical Core 2 (socket 0) forwards packets on 2 streams:
>   RX P=0/Q=0 (socket 0) -> TX P=0/Q=0 (socket 0) peer=02:00:00:00:00:00
>   RX P=0/Q=1 (socket 0) -> TX P=0/Q=1 (socket 0) peer=02:00:00:00:00:00
> Logical Core 3 (socket 0) forwards packets on 2 streams:
>   RX P=0/Q=0 (socket 0) -> TX P=0/Q=0 (socket 0) peer=02:00:00:00:00:00
>   RX P=0/Q=1 (socket 0) -> TX P=0/Q=1 (socket 0) peer=02:00:00:00:00:00
> 
> After this commit, the result will be:
> dpdk-testpmd -a BDF --proc-type=auto -- -i --rxq=4 --txq=4
> --nb-cores=2 --num-procs=2 --proc-id=0
> testpmd> start
> io packet forwarding - ports=1 - cores=2 - streams=2 - NUMA support
> enabled, MP allocation mode: native
> Logical Core 2 (socket 0) forwards packets on 1 streams:
>   RX P=0/Q=0 (socket 2) -> TX P=0/Q=0 (socket 2) peer=02:00:00:00:00:00
> Logical Core 3 (socket 0) forwards packets on 1 streams:
>   RX P=0/Q=1 (socket 2) -> TX P=0/Q=1 (socket 2) peer=02:00:00:00:00:00
> 
> Fixes: a550baf24af9 ("app/testpmd: support multi-process")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Dengdui Huang <huangdengdui at huawei.com>
> Acked-by: Chengwen Feng <fengchengwen at huawei.com>
>

Thanks for the fix.

Acked-by: Ferruh Yigit <ferruh.yigit at amd.com>

Applied to dpdk-next-net/main, thanks.