Family ulp_ddp netlink specification

Summary

Netlink protocol to manage ULP DPP on network devices.

Operations

caps-get

Get ULP DDP capabilities.

attribute-set:

caps

do:

request

attributes:

[ifindex]

reply

attributes:

[ifindex, hw, active]

pre

ulp_ddp_get_netdev

post

ulp_ddp_put_netdev

stats-get

Get ULP DDP stats.

attribute-set:

stats

do:

request

attributes:

[ifindex]

reply

attributes:

[ifindex, rx-nvme-tcp-sk-add, rx-nvme-tcp-sk-add-fail, rx-nvme-tcp-sk-del, rx-nvme-tcp-setup, rx-nvme-tcp-setup-fail, rx-nvme-tcp-teardown, rx-nvme-tcp-drop, rx-nvme-tcp-resync, rx-nvme-tcp-packets, rx-nvme-tcp-bytes]

pre

ulp_ddp_get_netdev

post

ulp_ddp_put_netdev

caps-set

Set ULP DDP capabilities.

attribute-set:

caps

do:

request

attributes:

[ifindex, wanted, wanted_mask]

reply

attributes:

[ifindex, hw, active]

pre

ulp_ddp_get_netdev

post

ulp_ddp_put_netdev

caps-set-ntf

Notification for change in ULP DDP capabilities.

notify:

caps-get

Multicast groups

• mgmt

Definitions

cap

type:

enum

entries:

• nvme-tcp

• nvme-tcp-ddgst-rx

Attribute sets

stats

ifindex (u32)

doc:

Interface index of the net device.

rx-nvme-tcp-sk-add (uint)

doc:

Sockets successfully configured for NVMeTCP offloading.

rx-nvme-tcp-sk-add-fail (uint)

doc:

Sockets failed to be configured for NVMeTCP offloading.

rx-nvme-tcp-sk-del (uint)

doc:

Sockets with NVMeTCP offloading configuration removed.

rx-nvme-tcp-setup (uint)

doc:

NVMe-TCP IOs successfully configured for Rx Direct Data Placement.

rx-nvme-tcp-setup-fail (uint)

doc:

NVMe-TCP IOs failed to be configured for Rx Direct Data Placement.

rx-nvme-tcp-teardown (uint)

doc:

NVMe-TCP IOs with Rx Direct Data Placement configuration removed.

rx-nvme-tcp-drop (uint)

doc:

Packets failed the NVMeTCP offload validation.

rx-nvme-tcp-resync (uint)

doc:

NVMe-TCP resync operations were processed due to Rx TCP packets re-ordering.

rx-nvme-tcp-packets (uint)

doc:

TCP packets successfully processed by the NVMeTCP offload.

rx-nvme-tcp-bytes (uint)

doc:

Bytes were successfully processed by the NVMeTCP offload.

caps

ifindex (u32)

doc:

Interface index of the net device.

hw (uint)

doc:

Bitmask of the capabilities supported by the device.

enum:

cap

enum-as-flags:

True

active (uint)

doc:

Bitmask of the capabilities currently enabled on the device.

enum:

cap

enum-as-flags:

True

wanted (uint)

doc:

New active bit values of the capabilities we want to set on the device.

enum:

cap

enum-as-flags:

True

wanted_mask (uint)

doc:

Bitmask of the meaningful bits in the wanted field.

enum:

cap

enum-as-flags:

True