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a9c2a60854
Add new xdp-rx-metadata-features member to netdev netlink which exports a bitmask of supported kfuncs. Most of the patch is autogenerated (headers), the only relevant part is netdev.yaml and the changes in netdev-genl.c to marshal into netlink. Example output on veth: $ ip link add veth0 type veth peer name veth1 # ifndex == 12 $ ./tools/net/ynl/samples/netdev 12 Select ifc ($ifindex; or 0 = dump; or -2 ntf check): 12 veth1[12] xdp-features (23): basic redirect rx-sg xdp-rx-metadata-features (3): timestamp hash xdp-zc-max-segs=0 Cc: netdev@vger.kernel.org Cc: Willem de Bruijn <willemb@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/20230913171350.369987-3-sdf@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
130 lines
3.0 KiB
YAML
130 lines
3.0 KiB
YAML
# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
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name: netdev
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doc:
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netdev configuration over generic netlink.
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definitions:
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-
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type: flags
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name: xdp-act
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render-max: true
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entries:
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-
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name: basic
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doc:
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XDP features set supported by all drivers
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(XDP_ABORTED, XDP_DROP, XDP_PASS, XDP_TX)
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-
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name: redirect
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doc:
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The netdev supports XDP_REDIRECT
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-
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name: ndo-xmit
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doc:
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This feature informs if netdev implements ndo_xdp_xmit callback.
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-
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name: xsk-zerocopy
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doc:
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This feature informs if netdev supports AF_XDP in zero copy mode.
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-
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name: hw-offload
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doc:
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This feature informs if netdev supports XDP hw offloading.
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-
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name: rx-sg
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doc:
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This feature informs if netdev implements non-linear XDP buffer
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support in the driver napi callback.
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-
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name: ndo-xmit-sg
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doc:
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This feature informs if netdev implements non-linear XDP buffer
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support in ndo_xdp_xmit callback.
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-
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type: flags
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name: xdp-rx-metadata
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render-max: true
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entries:
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-
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name: timestamp
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doc:
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Device is capable of exposing receive HW timestamp via bpf_xdp_metadata_rx_timestamp().
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-
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name: hash
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doc:
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Device is capable of exposing receive packet hash via bpf_xdp_metadata_rx_hash().
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attribute-sets:
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-
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name: dev
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attributes:
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-
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name: ifindex
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doc: netdev ifindex
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type: u32
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checks:
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min: 1
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-
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name: pad
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type: pad
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-
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name: xdp-features
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doc: Bitmask of enabled xdp-features.
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type: u64
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enum: xdp-act
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enum-as-flags: true
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-
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name: xdp-zc-max-segs
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doc: max fragment count supported by ZC driver
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type: u32
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checks:
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min: 1
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-
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name: xdp-rx-metadata-features
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doc: Bitmask of supported XDP receive metadata features.
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See Documentation/networking/xdp-rx-metadata.rst for more details.
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type: u64
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enum: xdp-rx-metadata
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enum-as-flags: true
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operations:
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list:
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-
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name: dev-get
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doc: Get / dump information about a netdev.
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attribute-set: dev
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do:
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request:
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attributes:
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- ifindex
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reply: &dev-all
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attributes:
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- ifindex
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- xdp-features
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- xdp-zc-max-segs
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- xdp-rx-metadata-features
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dump:
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reply: *dev-all
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-
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name: dev-add-ntf
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doc: Notification about device appearing.
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notify: dev-get
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mcgrp: mgmt
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-
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name: dev-del-ntf
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doc: Notification about device disappearing.
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notify: dev-get
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mcgrp: mgmt
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-
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name: dev-change-ntf
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doc: Notification about device configuration being changed.
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notify: dev-get
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mcgrp: mgmt
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mcast-groups:
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list:
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-
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name: mgmt
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