RE: Using rte_flow to distribute single flow type among multiple Rx queues using DPDK in Mellanox ConnectX-5 Ex

[Wisam Monther <wisamm@nvidia.com>]

Hi Anna,

> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Wednesday, September 29, 2021 12:54 PM
> To: Anna A <pacman.n908@gmail.com>
> Cc: users@dpdk.org; Matan Azrad <matan@nvidia.com>; Slava Ovsiienko
> <viacheslavo@nvidia.com>
> Subject: Re: Using rte_flow to distribute single flow type among multiple Rx
> queues using DPDK in Mellanox ConnectX-5 Ex
> 
> 29/09/2021 07:26, Anna A:
> > Hi,
> >
> > I'm trying to use rte_flow_action_type_rss to distribute packets all
> > of the same flow type among multiple Rx queues on a single port.
> > Mellanox
> > ConnectX-5 Ex and DPDK version 20.05 is used for this purpose. It
> > doesn't seem to work and all the packets are sent only to a single queue.
> 
> Adding mlx5 maintainers Cc.
> 
> > My queries are :
> > 1. What am I missing or doing differently?
> > 2. Should I be doing any other configurations in rte_eth_conf or
> > rte_eth_rxmode?

Can you please try to add?
.rxmode.mq_mode = ETH_MQ_RX_RSS,
in the rte_eth_conf and try again?

> 
> Do you see any error log?
> For info, you can change log level with --log-level.
> Experiment options with '--log-level help' in recent DPDK.
> 
> > My rte_flow configurations:
> >
> >     struct rte_flow_item pattern[MAX_RTE_FLOW_PATTERN] = {};
> >     struct rte_flow_action action[MAX_RTE_FLOW_ACTIONS] = {};
> >     struct rte_flow_attr attr;
> >     struct rte_flow_item_eth eth;
> >     struct rte_flow *flow = NULL;
> >     struct rte_flow_error error;
> >     int ret;
> >     int no_queues =2;
> >     uint16_t queues[2];
> >     struct rte_flow_action_rss rss;
> >     memset(&error, 0x22, sizeof(error));
> >     memset(&attr, 0, sizeof(attr));
> >     attr.egress = 0;
> >     attr.ingress = 1;
> >
> >     memset(&pattern, 0, sizeof(pattern));
> >     memset(&action, 0, sizeof(action));
> >     /* setting the eth to pass all packets */
> >     pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
> >     pattern[0].spec = &eth;
> >     pattern[1].type = RTE_FLOW_ITEM_TYPE_END;
> >
> >     rss.types = ETH_RSS_IP;
> >     rss.level = 0;
> >     rss.func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
> >     rss.key_len =0;
> >     rss.key = NULL;
> >     rss.queue_num = no_queues;
> >     for (int i= 0; i < no_queues; i++){
> >         queues[i] = i;
> >     }
> >     rss.queue = queues;
> >     action[0].type = RTE_FLOW_ACTION_TYPE_RSS;
> >     action[0].conf = &rss;
> >
> >     action[1].type = RTE_FLOW_ACTION_TYPE_END;
> >
> >     ret = rte_flow_validate(portid, &attr, pattern, action, &error);
> >      if (ret < 0) {
> >       printf( "Flow validation failed %s\n", error.message);
> >         return;
> >     }
> >     flow = rte_flow_create(portid, &attr, pattern, action, &error);
> >
> >     if (flow == NULL)
> >         printf(" Cannot create Flow create");
> >
> > And Rx queues configuration:
> > for (int j = 0; j < no_queues; j++) {
> >
> >          int ret = rte_eth_rx_queue_setup(portid, j, nb_rxd,
> > rte_eth_dev_socket_id(port_id),
> >                                NULL,mbuf_pool);
> >      if (ret < 0) {
> >       printf( "rte_eth_rx_queue_setup:err=%d, port=%u", ret,
> > (unsigned) portid);
> >         exit(1);
> >        }
> > }
> >
> > Thanks
> > Anna
> 
> 

BRs,
Wisam Jaddo