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Add missing support for parsing MAC addresses when display_hint is 'mac'
in the YNL library. This enables YNL CLI to accept MAC address strings
for attributes like lladdr in rt-neigh operations.
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20251117024457.3034-2-liuhangbin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In early days of YNL development dumping the NlMsg on errors
was quite useful, as the library itself could have been buggy.
These days increasingly the NlMsg is just taking up screen space
and means nothing to a typical user. Try to format the errors
more in line with how YNL C formats its errors strings.
Before:
$ ynl --family ethtool --do channels-set --json '{}'
Netlink error: Invalid argument
nl_len = 44 (28) nl_flags = 0x300 nl_type = 2
error: -22
extack: {'miss-type': 'header'}
$ ynl --family ethtool --do channels-set --json '{..., "tx-count": 999}'
Netlink error: Invalid argument
nl_len = 88 (72) nl_flags = 0x300 nl_type = 2
error: -22
extack: {'msg': 'requested channel count exceeds maximum', 'bad-attr': '.tx-count'}
After:
$ ynl --family ethtool --do channels-set --json '{}'
Netlink error: Invalid argument {'miss-type': 'header'}
$ ynl --family ethtool --do channels-set --json '{..., "tx-count": 999}'
Netlink error: requested channel count exceeds maximum: Invalid argument {'bad-attr': '.tx-count'}
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20251027192958.2058340-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Class NlError() and operation_do_attributes() are indented by 2 spaces
rather than 4 spaces used by the rest of the file.
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20251027192958.2058340-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The attribute WGALLOWEDIP_A_IPADDR can contain either an IPv4
or an IPv6 address depending on WGALLOWEDIP_A_FAMILY, however
in practice it is enough to look at the attribute length.
This patch implements an ipv4-or-v6 display hint, that can
deal with this kind of attribute.
It only implements this display hint for genetlink-legacy, it
can be added to other protocol variants if needed, but we don't
want to encourage it's use.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250915144301.725949-12-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch adds support for decoding hex input, so
that binary attributes can be read through --json.
Example (using future wireguard.yaml):
$ sudo ./tools/net/ynl/pyynl/cli.py --family wireguard \
--do set-device --json '{"ifindex":3,
"private-key":"2a ae 6c 35 c9 4f cf <... to 32 bytes>"}'
In order to somewhat mirror what is done in _formatted_string(),
then for non-binary attributes attempt to convert it to an int.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250915144301.725949-11-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch adds support for encoding indexed-array
attributes with sub-type nest in pyynl.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250915144301.725949-10-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch moves nest packing into a helper function,
that can also be used for packing indexed arrays.
No behavioural changes intended.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250915144301.725949-9-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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It is better to use the 'is' keyword instead of comparing to None
according to Ruff.
This is linked to Ruff error E711 [1]:
According to PEP 8, "Comparisons to singletons like None should always
be done with is or is not, never the equality operators."
Link: https://docs.astral.sh/ruff/rules/none-comparison/ [1]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Link: https://patch.msgid.link/20250909-net-next-ynl-ruff-v1-7-238c2bccdd99@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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These semicolons are not required according to Ruff. Simply remove them.
This is linked to Ruff error E703 [1]:
A trailing semicolon is unnecessary and should be removed.
Link: https://docs.astral.sh/ruff/rules/useless-semicolon/ [1]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Link: https://patch.msgid.link/20250909-net-next-ynl-ruff-v1-6-238c2bccdd99@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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These imports are not used according to Ruff, and can be safely removed.
This is linked to Ruff error F401 [1]:
Unused imports add a performance overhead at runtime, and risk
creating import cycles. They also increase the cognitive load of
reading the code.
There is one exception with 'YnlDocGenerator' which is added in __all__:
it is used by ynl_gen_rst.py.
Link: https://docs.astral.sh/ruff/rules/unused-import/ [1]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Link: https://patch.msgid.link/20250909-net-next-ynl-ruff-v1-5-238c2bccdd99@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This variable used in the error path was not defined according to Ruff.
msg_format.attr_set is used instead, presumably the one that was
supposed to be used originally.
This is linked to Ruff error F821 [1]:
An undefined name is likely to raise NameError at runtime.
Fixes: 1769e2be4baa ("tools/net/ynl: Add 'sub-message' attribute decoding to ynl")
Link: https://docs.astral.sh/ruff/rules/undefined-name/ [1]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Link: https://patch.msgid.link/20250909-net-next-ynl-ruff-v1-1-238c2bccdd99@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We support decoding a binary type with a scalar subtype already,
add support for sending such arrays to the kernel. While at it
also support using "None" to indicate that the binary attribute
should be empty. I couldn't decide whether empty binary should
be [] or None, but there should be no harm in supporting both.
Link: https://patch.msgid.link/20250716000331.1378807-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Extend the process_unknown handing to enum values and flags.
Tested by removing entries from rt-link.yaml and rt-neigh.yaml:
./tools/net/ynl/pyynl/cli.py --family rt-link --dump getlink \
--process-unknown --output-json | jq '.[0] | ."ifi-flags"'
[
"up",
"Unknown(6)",
"loopback",
"Unknown(16)"
]
./tools/net/ynl/pyynl/cli.py --family rt-neigh --dump getneigh \
--process-unknown --output-json | jq '.[] | ."ndm-type"'
"unicast"
"Unknown(5)"
"Unknown(5)"
"unicast"
"Unknown(5)"
"unicast"
"broadcast"
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use enum decoding on auto-ints. Looks like we only had enum
auto-ints for input values until now. Upcoming RSS work will
need this to declare an attribute with flags as a uint.
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250708220640.2738464-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The multi message support loosened the connection between the request
and response handling, as we can now submit multiple requests before
we start processing responses. Passing the attr set to NlMsgs decoding
no longer makes sense (if it ever did), attr set may differ message
by messsage. Isolate the part of decoding responsible for attr-set
specific interpretation and call it once we identified the correct op.
Without this fix performing SET operation on an ethtool socket, while
being subscribed to notifications causes:
# File "tools/net/ynl/pyynl/lib/ynl.py", line 1096, in _op
# Exception| return self._ops(ops)[0]
# Exception| ~~~~~~~~~^^^^^
# File "tools/net/ynl/pyynl/lib/ynl.py", line 1040, in _ops
# Exception| nms = NlMsgs(reply, attr_space=op.attr_set)
# Exception| ^^^^^^^^^^^
The value of op we use on line 1040 is stale, it comes form the previous
loop. If a notification comes before a response we will update op to None
and the next iteration thru the loop will break with the trace above.
Fixes: 6fda63c45fe8 ("tools/net/ynl: fix cli.py --subscribe feature")
Fixes: ba8be00f68f5 ("tools/net/ynl: Add multi message support to ynl")
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250618171746.1201403-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Extend the Python YNL extack decoding to handle sub-messages in the same
way that YNL C does. This involves retaining the input values so that
they are available during extack decoding.
./tools/net/ynl/pyynl/cli.py --family rt-link --do newlink --create \
--json '{
"linkinfo": {"kind": "netkit", "data": {"policy": 10} }
}'
Netlink error: Invalid argument
nl_len = 92 (76) nl_flags = 0x300 nl_type = 2
error: -22
extack: {'msg': 'Provided default xmit policy not supported', 'bad-attr': '.linkinfo.data(netkit).policy'}
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250523103031.80236-1-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The ynl tool uses display-hint to know when to format IP addresses in
printed output, but not to parse IP addresses from --json input. Add
support for parsing ipv4 and ipv6 strings.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250211120127.84858-5-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The nl80211 family encodes the list of supported ciphers as a C array of
u32 values. Add support for translating arrays of scalars into strings
for enum names and display hints.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250211120127.84858-4-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When decoding an indexed-array with a scalar subtype, it is currently
only possible to add a display-hint. Add support for decoding each value
as an enum.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250211120127.84858-3-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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_decode_array_attr() uses variable subattrs in every branch when only
one branch decodes more than a single attribute.
Change the variable name to subattr in the branches that only decode a
single attribute so that the intent is more obvious.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250211120127.84858-2-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Move python code to a separate directory so it can be
packaged as a python module. Updates existing references
in selftests and docs.
Also rename ynl-gen-[c|rst] to ynl_gen_[c|rst], avoid
dashes as these prevent easy imports for entrypoints.
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/a4151bad0e6984e7164d395125ce87fd2e048bf1.1736343575.git.jstancek@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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