<div style="font-family: Arial, sans-serif; font-size: 14px;"></div><div style="line-height:1.5;scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Hi,</span><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">I'm a bit puzzled why DPDK is reporting RSS to be not available on my ENA port (at AWS) when I'm expecting it to be.</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br></span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">My setup is:</span></div><blockquote style="margin: 0px; padding: 0px 0px 0px 10px; font-size: 1em; border-left: 3px solid rgb(200, 200, 200); scrollbar-width: thin; scrollbar-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0); border-top-color: rgb(200, 200, 200); border-right-color: rgb(200, 200, 200); border-bottom-color: rgb(200, 200, 200); color: rgb(102, 102, 102);"><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">c7a.4xlarge</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"> [ENA_COM: ena_com_validate_version]ENA device version: 0.10</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"> [ENA_COM: ena_com_validate_version]ENA controller version: 0.0.1 implementation version 1</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">16-cores (hyper-threading disabled),</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">4 ENA interfaces/network adapters, but only one (with public IP) is bound to igb_uio</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">DPDK 24.07</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">6.5.0-1020-aws,</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Ubuntu 22.04.4 LTS,</span></div></blockquote><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">The device reports that 8 queues are available, but rte_eth_dev_info::rx_offload_capa does not have RTE_ETH_RX_OFFLOAD_RSS_HASH set after calling rte_eth_dev_info_get().</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">The flag value seems to be coming from here,</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><a href="https://github.com/DPDK/dpdk/blob/b3485f4293997d35b6daecc3437bb0c183a51fb3/drivers/net/ena/ena_ethdev.c#L2402" rel="noreferrer nofollow noopener" target="_blank" style="text-decoration:underline;cursor:pointer;scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">https://github.com/DPDK/dpdk/blob/b3485f4293997d35b6daecc3437bb0c183a51fb3/drivers/net/ena/ena_ethdev.c#L2402</a></span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Where the offload mask is:</span></div><blockquote style="margin: 0px; padding: 0px 0px 0px 10px; font-size: 1em; border-left: 3px solid rgb(200, 200, 200); scrollbar-width: thin; scrollbar-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0); border-top-color: rgb(200, 200, 200); border-right-color: rgb(200, 200, 200); border-bottom-color: rgb(200, 200, 200); color: rgb(102, 102, 102);"><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"> (ena_com_dev_get_features_ctx*) get_feat_ctx->offload</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"> tx = 3</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"> rx_supported = 7</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"> rx_enabled = 0</span></div></blockquote><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Isn't RSS supposed to be available on this ENA setup?</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br></span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">If not, how am I supposed to distribute inbound packets across those 8 receive queues/CPUs?</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Some notes, log:</span></div><blockquote style="margin: 0px; padding: 0px 0px 0px 10px; font-size: 1em; border-left: 3px solid rgb(200, 200, 200); scrollbar-width: thin; scrollbar-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0); border-top-color: rgb(200, 200, 200); border-right-color: rgb(200, 200, 200); border-bottom-color: rgb(200, 200, 200); color: rgb(102, 102, 102);"><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">at eth_ena_dev_init(), ena_use_large_llq_hdr() returned true</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">ena_get_metrics_entries(): 0x6 customer metrics are supported</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">ena_use_large_llq_hdr(): Recommended device entry size policy 4</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">eth_ena_dev_init(): LLQ entry size 256B</span></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">eth_ena_dev_init(): Placement policy: Low latency</span></div></blockquote><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Any advice?</div><div style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></div><span style="scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"></span>Thanks,</div><span style="line-height:1.5;scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)">Fabio</span><div class="protonmail_signature_block" style="font-family: Arial, sans-serif; font-size: 14px;"><div class="protonmail_signature_block-proton"> </div> </div> <div><span style="line-height:1.5;scrollbar-width:thin;scrollbar-color:rgba(0, 0, 0, 0) rgba(0, 0, 0, 0)"><br></span></div>