-* Using the DPDK PMD PF ixgbe driver to enable VF RSS:
-
- Same steps as above to install the modules of uio, igb_uio, specify max_vfs for PCI device, and
- launch the DPDK testpmd/example or your own host daemon application using the DPDK PMD library.
-
- The available queue number(at most 4) per VF depends on the total number of pool, which is
- determined by the max number of VF at PF initialization stage and the number of queue specified
- in config:
-
- * If the max number of VF is set in the range of 1 to 32:
-
- If the number of rxq is specified as 4(e.g. '--rxq 4' in testpmd), then there are totally 32
- pools(ETH_32_POOLS), and each VF could have 4 or less(e.g. 2) queues;
-
- If the number of rxq is specified as 2(e.g. '--rxq 2' in testpmd), then there are totally 32
- pools(ETH_32_POOLS), and each VF could have 2 queues;
-
- * If the max number of VF is in the range of 33 to 64:
-
- If the number of rxq is 4 ('--rxq 4' in testpmd), then error message is expected as rxq is not
- correct at this case;
-
- If the number of rxq is 2 ('--rxq 2' in testpmd), then there is totally 64 pools(ETH_64_POOLS),
- and each VF have 2 queues;
-
- On host, to enable VF RSS functionality, rx mq mode should be set as ETH_MQ_RX_VMDQ_RSS
- or ETH_MQ_RX_RSS mode, and SRIOV mode should be activated(max_vfs >= 1).
- It also needs config VF RSS information like hash function, RSS key, RSS key length.
-
- .. code-block:: console
-
- testpmd -c 0xffff -n 4 -- --coremask=<core-mask> --rxq=4 --txq=4 -i
-
- The limitation for VF RSS on Intel® 82599 10 Gigabit Ethernet Controller is:
- The hash and key are shared among PF and all VF, the RETA table with 128 entries is also shared
- among PF and all VF; So it could not to provide a method to query the hash and reta content per
- VF on guest, while, if possible, please query them on host(PF) for the shared RETA information.
-