[dpdk-users] Same 5 tuple UDP packets have been delivered to different queues.

[Asaf Penso]

Hello Jun Gan,

Thanks for reaching out and posting this query.
I'm adding here our support team for further assistance.

Regards,
Asaf Penso

> -----Original Message-----
> From: users <users-bounces at dpdk.org> On Behalf Of Jun Gan
> Sent: Monday, October 7, 2019 6:13 AM
> To: users at dpdk.org
> Subject: [dpdk-users] Same 5 tuple UDP packets have been delivered to
> different queues.
> 
> Hi All,
> 
> I just added multiple queues and enabled RSS in our application, I set
> "rss_hf" to "ETH_RSS_IP | ETH_RSS_UDP", but I can see that same 5 tuple
> packets, will be delivered to different queues. Do I miss something?
> 
> Here is the code:
> 
> eth_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
> eth_conf.rx_adv_conf.rss_conf.rss_hf = ETH_RSS_IP | ETH_RSS_UDP
> eth_conf..rx_adv_conf.rss_conf.rss_hf &=
> dev_info.flow_type_rss_offloads;
> 
> 
> I actually have two queues, and two different threads(lcore) busy
> polling(rx_burst) on these two queues, I also met other weird issues like:
> 
> dpdk-stable-18.11.2/drivers/net/mlx5/mlx5_rxtx_vec_sse.h:743:
> rxq_burst_v:
> Assertion `rxq->rq_pi == rxq->cq_ci' failed.
> 
> I don't understand what does this means, I think rx_burst on the same nic
> different queue should be thread-safe, isn't it?
> 
> I'm using dpdk 18.11.2, OS is centos 7.6 and NIC is MLX CX-5.
> 
> I really appreciate it if anyone can help!!
> 
> Thanks,
> Jun Gan
> 
> 
> --
> Jun Gan