Hi Zhilong,
I encountered the same problem before, and I found a solution at https://stackoverflow.com/questions/42342723/how-to-set-up-rss-hash-fuction-in-xl710-to-receive-ipv4-flow-type# You basically need to find the corresponding C function of each CLI command, and directly call them with some modifications. Best wishes, Xiaoban ________________________________ From: users <[email protected]> on behalf of zhilong zheng <[email protected]> Sent: Tuesday, October 23, 2018 1:50:30 AM To: Xiao Kong Cc: [email protected] Subject: Re: [dpdk-users] RSS problems with Intel XL710 NIC (i40e) Hi Kong, What command that you use to run testpmd? It seems that your RSS is not enabled/configured. Regards, Zhilong > 在 2018年10月20日，09:59，Xiao Kong <[email protected]> 写道： > > Dear all, > We are currently trying to build a multi-RX-queue dpdk program, using RSS to > split the incoming traffic evenly into RX queues on a single port. It works > fine when we use an Intel 82599ES 10Gig NIC. However when we switch to the > Intel XL710 40Gig NIC (i40e), RSS does not seem to work. As a result, TCP > packets belonging to various flows (with different src&dst IPs, ports) are > all sent into the same RX queue. Below is our code. > static const struct rte_eth_conf port_conf_default = { > .rxmode = { > .max_rx_pkt_len = ETHER_MAX_LEN, //1518 > .mq_mode = ETH_MQ_RX_RSS, > }, > .rx_adv_conf = { > .rss_conf = { > .rss_key = NULL, > .rss_hf = ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP | ETH_RSS_SCTP, > } > }, > }; > We noticed that it is mentioned on several pages that XL710 sometimes behaves > quite differently from other NICs, but we just can't find a way to > configurate RSS hash fields on our card. Another thing is when we tried to > enable RSS or setup hash fields in testpmd, it showed error messages as > follows. > testpmd> port config all rss all > Configuration of RSS hash at ethernet port 0 failed with error (22): Invalid > argument. > Configuration of RSS hash at ethernet port 1 failed with error (22): Invalid > argument. > testpmd> show port 1 rss-hash ipv4 > RSS disabled > I am wondering if there is any mistake we made or if there is a unique method > for XL710 to configure RSS hash fields. > By the way, we are using DPDK ver. 17.08. > Thanks. > -------------------------- > Best Regards, > Kong >
