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Diffstat (limited to 'Documentation/networking/devlink/devlink-port.rst')
| -rw-r--r-- | Documentation/networking/devlink/devlink-port.rst | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/networking/devlink/devlink-port.rst b/Documentation/networking/devlink/devlink-port.rst index 562f46b41274..9d22d41a7cd1 100644 --- a/Documentation/networking/devlink/devlink-port.rst +++ b/Documentation/networking/devlink/devlink-port.rst @@ -134,6 +134,9 @@ Users may also set the IPsec crypto capability of the function using Users may also set the IPsec packet capability of the function using `devlink port function set ipsec_packet` command. +Users may also set the maximum IO event queues of the function +using `devlink port function set max_io_eqs` command. + Function attributes =================== @@ -295,6 +298,36 @@ policy is processed in software by the kernel. function: hw_addr 00:00:00:00:00:00 ipsec_packet enabled +Maximum IO events queues setup +------------------------------ +When user sets maximum number of IO event queues for a SF or +a VF, such function driver is limited to consume only enforced +number of IO event queues. + +IO event queues deliver events related to IO queues, including network +device transmit and receive queues (txq and rxq) and RDMA Queue Pairs (QPs). +For example, the number of netdevice channels and RDMA device completion +vectors are derived from the function's IO event queues. Usually, the number +of interrupt vectors consumed by the driver is limited by the number of IO +event queues per device, as each of the IO event queues is connected to an +interrupt vector. + +- Get maximum IO event queues of the VF device:: + + $ devlink port show pci/0000:06:00.0/2 + pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1 + function: + hw_addr 00:00:00:00:00:00 ipsec_packet disabled max_io_eqs 10 + +- Set maximum IO event queues of the VF device:: + + $ devlink port function set pci/0000:06:00.0/2 max_io_eqs 32 + + $ devlink port show pci/0000:06:00.0/2 + pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1 + function: + hw_addr 00:00:00:00:00:00 ipsec_packet disabled max_io_eqs 32 + Subfunction ============ |