On 9/7/24 23:55, Morten Brørup wrote:
From: Morten Brørup [mailto:m...@smartsharesystems.com] Sent: Friday, 6 September 2024 21.38Maxime, Chenbo, If the virtio PMD supports RSS, it should be announced in its capabilities. I think this should be added to virtio_dev_info_get(): if (host_features & (1ULL << VIRTIO_NET_F_RSS)) dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_RSS_HASH;Or perhaps I'm misunderstanding this capability flag. I thought it indicated RSS ability, i.e. multi-queue, effectively shadowing rte_eth_conf.rxmode.mq_mode RTE_ETH_MQ_RX_RSS_FLAG. But maybe it doesn't. Maybe it indicates the ability to store the RSS hash value in the mbuf. The RTE_ETH_RX_OFFLOAD_RSS_HASH flag is completely undocumented. Can someone please clarify?
RTE_ETH_RX_OFFLOAD_RSS_HASH means that the driver can provide RSS hash value in mbuf (it makes sense if HW can provide it to the driver).
