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|
# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
name: netdev
doc:
netdev configuration over generic netlink.
definitions:
-
type: flags
name: xdp-act
render-max: true
entries:
-
name: basic
doc:
XDP features set supported by all drivers
(XDP_ABORTED, XDP_DROP, XDP_PASS, XDP_TX)
-
name: redirect
doc:
The netdev supports XDP_REDIRECT
-
name: ndo-xmit
doc:
This feature informs if netdev implements ndo_xdp_xmit callback.
-
name: xsk-zerocopy
doc:
This feature informs if netdev supports AF_XDP in zero copy mode.
-
name: hw-offload
doc:
This feature informs if netdev supports XDP hw offloading.
-
name: rx-sg
doc:
This feature informs if netdev implements non-linear XDP buffer
support in the driver napi callback.
-
name: ndo-xmit-sg
doc:
This feature informs if netdev implements non-linear XDP buffer
support in ndo_xdp_xmit callback.
-
type: flags
name: xdp-rx-metadata
entries:
-
name: timestamp
doc:
Device is capable of exposing receive HW timestamp via bpf_xdp_metadata_rx_timestamp().
-
name: hash
doc:
Device is capable of exposing receive packet hash via bpf_xdp_metadata_rx_hash().
-
type: flags
name: xsk-flags
entries:
-
name: tx-timestamp
doc:
HW timestamping egress packets is supported by the driver.
-
name: tx-checksum
doc:
L3 checksum HW offload is supported by the driver.
-
name: queue-type
type: enum
entries: [ rx, tx ]
attribute-sets:
-
name: dev
attributes:
-
name: ifindex
doc: netdev ifindex
type: u32
checks:
min: 1
-
name: pad
type: pad
-
name: xdp-features
doc: Bitmask of enabled xdp-features.
type: u64
enum: xdp-act
-
name: xdp-zc-max-segs
doc: max fragment count supported by ZC driver
type: u32
checks:
min: 1
-
name: xdp-rx-metadata-features
doc: Bitmask of supported XDP receive metadata features.
See Documentation/networking/xdp-rx-metadata.rst for more details.
type: u64
enum: xdp-rx-metadata
-
name: xsk-features
doc: Bitmask of enabled AF_XDP features.
type: u64
enum: xsk-flags
-
name: page-pool
attributes:
-
name: id
doc: Unique ID of a Page Pool instance.
type: uint
checks:
min: 1
max: u32-max
-
name: ifindex
doc: |
ifindex of the netdev to which the pool belongs.
May be reported as 0 if the page pool was allocated for a netdev
which got destroyed already (page pools may outlast their netdevs
because they wait for all memory to be returned).
type: u32
checks:
min: 1
max: s32-max
-
name: napi-id
doc: Id of NAPI using this Page Pool instance.
type: uint
checks:
min: 1
max: u32-max
-
name: inflight
type: uint
doc: |
Number of outstanding references to this page pool (allocated
but yet to be freed pages). Allocated pages may be held in
socket receive queues, driver receive ring, page pool recycling
ring, the page pool cache, etc.
-
name: inflight-mem
type: uint
doc: |
Amount of memory held by inflight pages.
-
name: detach-time
type: uint
doc: |
Seconds in CLOCK_BOOTTIME of when Page Pool was detached by
the driver. Once detached Page Pool can no longer be used to
allocate memory.
Page Pools wait for all the memory allocated from them to be freed
before truly disappearing. "Detached" Page Pools cannot be
"re-attached", they are just waiting to disappear.
Attribute is absent if Page Pool has not been detached, and
can still be used to allocate new memory.
-
name: page-pool-info
subset-of: page-pool
attributes:
-
name: id
-
name: ifindex
-
name: page-pool-stats
doc: |
Page pool statistics, see docs for struct page_pool_stats
for information about individual statistics.
attributes:
-
name: info
doc: Page pool identifying information.
type: nest
nested-attributes: page-pool-info
-
name: alloc-fast
type: uint
value: 8 # reserve some attr ids in case we need more metadata later
-
name: alloc-slow
type: uint
-
name: alloc-slow-high-order
type: uint
-
name: alloc-empty
type: uint
-
name: alloc-refill
type: uint
-
name: alloc-waive
type: uint
-
name: recycle-cached
type: uint
-
name: recycle-cache-full
type: uint
-
name: recycle-ring
type: uint
-
name: recycle-ring-full
type: uint
-
name: recycle-released-refcnt
type: uint
-
name: queue
attributes:
-
name: id
doc: Queue index; most queue types are indexed like a C array, with
indexes starting at 0 and ending at queue count - 1. Queue indexes
are scoped to an interface and queue type.
type: u32
-
name: ifindex
doc: ifindex of the netdevice to which the queue belongs.
type: u32
checks:
min: 1
-
name: type
doc: Queue type as rx, tx. Each queue type defines a separate ID space.
type: u32
enum: queue-type
-
name: napi-id
doc: ID of the NAPI instance which services this queue.
type: u32
operations:
list:
-
name: dev-get
doc: Get / dump information about a netdev.
attribute-set: dev
do:
request:
attributes:
- ifindex
reply: &dev-all
attributes:
- ifindex
- xdp-features
- xdp-zc-max-segs
- xdp-rx-metadata-features
- xsk-features
dump:
reply: *dev-all
-
name: dev-add-ntf
doc: Notification about device appearing.
notify: dev-get
mcgrp: mgmt
-
name: dev-del-ntf
doc: Notification about device disappearing.
notify: dev-get
mcgrp: mgmt
-
name: dev-change-ntf
doc: Notification about device configuration being changed.
notify: dev-get
mcgrp: mgmt
-
name: page-pool-get
doc: |
Get / dump information about Page Pools.
(Only Page Pools associated with a net_device can be listed.)
attribute-set: page-pool
do:
request:
attributes:
- id
reply: &pp-reply
attributes:
- id
- ifindex
- napi-id
- inflight
- inflight-mem
- detach-time
dump:
reply: *pp-reply
config-cond: page-pool
-
name: page-pool-add-ntf
doc: Notification about page pool appearing.
notify: page-pool-get
mcgrp: page-pool
config-cond: page-pool
-
name: page-pool-del-ntf
doc: Notification about page pool disappearing.
notify: page-pool-get
mcgrp: page-pool
config-cond: page-pool
-
name: page-pool-change-ntf
doc: Notification about page pool configuration being changed.
notify: page-pool-get
mcgrp: page-pool
config-cond: page-pool
-
name: page-pool-stats-get
doc: Get page pool statistics.
attribute-set: page-pool-stats
do:
request:
attributes:
- info
reply: &pp-stats-reply
attributes:
- info
- alloc-fast
- alloc-slow
- alloc-slow-high-order
- alloc-empty
- alloc-refill
- alloc-waive
- recycle-cached
- recycle-cache-full
- recycle-ring
- recycle-ring-full
- recycle-released-refcnt
dump:
reply: *pp-stats-reply
config-cond: page-pool-stats
-
name: queue-get
doc: Get queue information from the kernel.
Only configured queues will be reported (as opposed to all available
hardware queues).
attribute-set: queue
do:
request:
attributes:
- ifindex
- type
- id
reply: &queue-get-op
attributes:
- id
- type
- napi-id
- ifindex
dump:
request:
attributes:
- ifindex
reply: *queue-get-op
mcast-groups:
list:
-
name: mgmt
-
name: page-pool
|
