tools: ynl: add sample for wireguard

Add a sample application for WireGuard, using the generated C library.

The main benefit of this is to exercise the generated library,
which might be useful for

tools: ynl: add sample for wireguard

Add a sample application for WireGuard, using the generated C library.

The main benefit of this is to exercise the generated library,
which might be useful for future self-tests.

Example:
$ make -C tools/net/ynl/lib
$ make -C tools/net/ynl/generated
$ make -C tools/net/ynl/tests wireguard
$ ./tools/net/ynl/tests/wireguard
usage: ./tools/net/ynl/tests/wireguard <ifindex|ifname>
$ sudo ./tools/net/ynl/tests/wireguard wg-test
Interface 3: wg-test
Peer 6adfb183a4a2c94a2f92dab5ade762a4788[...]:
Data: rx: 42 / tx: 42 bytes
Allowed IPs:
0.0.0.0/0
::/0

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://patch.msgid.link/20260414153944.2742252-3-Jason@zx2c4.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: ethtool: add --dbg-small-recv option

Add a --dbg-small-recv debug option to control the recv() buffer size
used by YNL, matching the same option already present in cli.py. This
is useful

tools: ynl: ethtool: add --dbg-small-recv option

Add a --dbg-small-recv debug option to control the recv() buffer size
used by YNL, matching the same option already present in cli.py. This
is useful if user need to get large netlink message.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20260408-b4-ynl_ethtool-v2-3-7623a5e8f70b@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: ethtool: use doit instead of dumpit for per-device GET

Rename the local helper doit() to do_set() and dumpit() to do_get() to
better reflect their purpose.

Convert do_get() to use ynl.d

tools: ynl: ethtool: use doit instead of dumpit for per-device GET

Rename the local helper doit() to do_set() and dumpit() to do_get() to
better reflect their purpose.

Convert do_get() to use ynl.do() with an explicit device header instead
of ynl.dump() followed by client-side filtering. This is more efficient
as the kernel only processes and returns data for the requested device,
rather than dumping all devices across the netns.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20260408-b4-ynl_ethtool-v2-2-7623a5e8f70b@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: move ethtool.py to selftest

We have converted all the samples to selftests. This script is
the last piece of random "PoC" code we still have lying around.
Let's move it to tests.

Signed

tools: ynl: move ethtool.py to selftest

We have converted all the samples to selftests. This script is
the last piece of random "PoC" code we still have lying around.
Let's move it to tests.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20260408-b4-ynl_ethtool-v2-1-7623a5e8f70b@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: tests: fix leading space on Makefile target

The ../generated/protos.a rule had a spurious leading space before the
target name. In make, target rules must start at column 0; only recipe

tools: ynl: tests: fix leading space on Makefile target

The ../generated/protos.a rule had a spurious leading space before the
target name. In make, target rules must start at column 0; only recipe
lines are indented with a tab. The extra space caused make to misparse
the rule.

Remove the leading space to match the style of the adjacent
../lib/ynl.a rule.

Fixes: e0aa0c61758f ("tools: ynl: move samples to tests")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20260408-ynl_makefile-v1-1-f9624acc2ad9@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert rt-route sample to selftest

Convert rt-route.c to use kselftest_harness.h with FIXTURE/TEST_F.
This is the last test to convert so clean up the Makefile.

Validate that the conne

tools: ynl: convert rt-route sample to selftest

Convert rt-route.c to use kselftest_harness.h with FIXTURE/TEST_F.
This is the last test to convert so clean up the Makefile.

Validate that the connected routes for 192.168.1.0/24 and
2001:db8::/64 appear in the dump.

Output:

TAP version 13
1..1
# Starting 1 tests from 1 test cases.
# RUN rt_route.dump ...
# oif: nsim0 dst: 192.168.1.0/24
# oif: lo dst: ::1/128
# oif: nsim0 dst: 2001:db8::1/128
# oif: nsim0 dst: 2001:db8::/64
# oif: nsim0 dst: fe80::/64
# oif: nsim0 dst: ff00::/8
# OK rt_route.dump
ok 1 rt_route.dump
# PASSED: 1 / 1 tests passed.
# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-11-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert rt-addr sample to selftest

Convert rt-addr.c to use kselftest_harness.h with FIXTURE/TEST_F.

Validate that the addresses configured by the wrapper (192.168.1.1
and 2001:db8::1)

tools: ynl: convert rt-addr sample to selftest

Convert rt-addr.c to use kselftest_harness.h with FIXTURE/TEST_F.

Validate that the addresses configured by the wrapper (192.168.1.1
and 2001:db8::1) appear in the dump.

Output:

TAP version 13
1..1
# Starting 1 tests from 1 test cases.
# RUN rt_addr.dump ...
# lo: 127.0.0.1
# nsim0: 192.168.1.1
# lo: ::1
# nsim0: 2001:db8::1
# nsim0: fe80::7c66:c9ff:fe5f:bf01
# OK rt_addr.dump
ok 1 rt_addr.dump
# PASSED: 1 / 1 tests passed.
# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-10-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert ethtool sample to selftest

Convert ethtool.c to use kselftest_harness.h with FIXTURE/TEST_F.
Move ethtool from BINS to TEST_GEN_FILES and add ethtool.sh wrapper
which sets up a n

tools: ynl: convert ethtool sample to selftest

Convert ethtool.c to use kselftest_harness.h with FIXTURE/TEST_F.
Move ethtool from BINS to TEST_GEN_FILES and add ethtool.sh wrapper
which sets up a netdevsim device before running the test binary.

Output:

TAP version 13
1..2
# Starting 2 tests from 1 test cases.
# RUN ethtool.channels ...
# nsim0: combined 1
# OK ethtool.channels
ok 1 ethtool.channels
# RUN ethtool.rings ...
# nsim0: rx 512 tx 512
# OK ethtool.rings
ok 2 ethtool.rings
# PASSED: 2 / 2 tests passed.
# Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-9-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert devlink sample to selftest

Convert devlink.c to use kselftest_harness.h with FIXTURE/TEST_F.
Move devlink from BINS to TEST_GEN_FILES in the Makefile since
it's invoked via the d

tools: ynl: convert devlink sample to selftest

Convert devlink.c to use kselftest_harness.h with FIXTURE/TEST_F.
Move devlink from BINS to TEST_GEN_FILES in the Makefile since
it's invoked via the devlink.sh wrapper which sets up netdevsim.

Output:

TAP version 13
1..2
# Starting 2 tests from 1 test cases.
# RUN devlink.dump ...
# netdevsim/netdevsim1337
# OK devlink.dump
ok 1 devlink.dump
# RUN devlink.info ...
# netdevsim/netdevsim1337:
# driver: netdevsim
# running fw:
# fw.mgmt: 10.20.30
# OK devlink.info
ok 2 devlink.info
# PASSED: 2 / 2 tests passed.
# Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-8-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: add netdevsim wrapper library for YNL tests

Some tests need netdevsim setup which is painful to do from C.

Add ynl_nsim_lib.sh, a shared library providing nsim_setup and
nsim_cleanup fu

tools: ynl: add netdevsim wrapper library for YNL tests

Some tests need netdevsim setup which is painful to do from C.

Add ynl_nsim_lib.sh, a shared library providing nsim_setup and
nsim_cleanup functions for tests that need a netdevsim device.

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-7-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert tc and tc-filter-add samples to selftest

Convert tc.c and tc-filter-add.c to produce KTAP output with
kselftest_harness. Merge the two tests together. They both
test TC one is te

tools: ynl: convert tc and tc-filter-add samples to selftest

Convert tc.c and tc-filter-add.c to produce KTAP output with
kselftest_harness. Merge the two tests together. They both
test TC one is testing qdisc and the other classifiers but
they can easily live in a single selftest.

Make the test spawn a new netns, and run the operations on
lo to avoid onerous setup and cleanup.

TAP version 13
1..2
# Starting 2 tests from 1 test cases.
# RUN tc.qdisc ...
# lo: fq_codel limit: 10240p target: 5ms new_flow_cnt: 0
# OK tc.qdisc
ok 1 tc.qdisc
# RUN tc.flower ...
# flower pref 1 proto: 0x8100
# flower:
# vlan_id: 100
# vlan_prio: 5
# num_of_vlans: 3
# action order: 1 vlan push id 200 protocol 0x8100 priority 0
# action order: 2 vlan push id 300 protocol 0x8100 priority 0
# OK tc.flower
ok 2 tc.flower
# PASSED: 2 / 2 tests passed.
# Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-6-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert rt-link sample to selftest

Convert rt-link.c to use kselftest_harness.h with FIXTURE/TEST_F.
Move rt-link from BINS to TEST_GEN_PROGS.

Output:

TAP version 13
1..3
# Start

tools: ynl: convert rt-link sample to selftest

Convert rt-link.c to use kselftest_harness.h with FIXTURE/TEST_F.
Move rt-link from BINS to TEST_GEN_PROGS.

Output:

TAP version 13
1..3
# Starting 3 tests from 1 test cases.
# RUN rt_link.dump ...
# 1: lo: mtu 65536
# 2: sit0: mtu 1480 kind sit
# OK rt_link.dump
ok 1 rt_link.dump
# RUN rt_link.netkit ...
# 4: nk1: mtu 1500 kind netkit primary 1 policy blackhole
# OK rt_link.netkit
ok 2 rt_link.netkit
# RUN rt_link.netkit_err_msg ...
# OK rt_link.netkit_err_msg
ok 3 rt_link.netkit_err_msg
# PASSED: 3 / 3 tests passed.
# Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-5-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert ovs sample to selftest

Convert ovs.c to produce KTAP output with kselftest_harness.
The single "crud" test creates a new OVS datapath, fetches it back
by name, then dumps all dat

tools: ynl: convert ovs sample to selftest

Convert ovs.c to produce KTAP output with kselftest_harness.
The single "crud" test creates a new OVS datapath, fetches it back
by name, then dumps all datapaths verifying the new one appears.

IIRC I added this test because ovs is a genetlink family but
has a family-specific fixed header.

TAP version 13
1..1
# Starting 1 tests from 1 test cases.
# RUN ovs.crud ...
# get:
# ynl-test(3): pid:0 cache:256
# dump:
# ynl-test(3): pid:0 cache:256
# OK ovs.crud
ok 1 ovs.crud
# PASSED: 1 / 1 tests passed.
# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: convert netdev sample to selftest

Convert netdev.c to produce KTAP output with 3 tests:
- dev_dump: dump all netdev devices, skip if empty
- dev_get: query first device from dump by ifin

tools: ynl: convert netdev sample to selftest

Convert netdev.c to produce KTAP output with 3 tests:
- dev_dump: dump all netdev devices, skip if empty
- dev_get: query first device from dump by ifindex
- ntf_check: subscribe to "mgmt", create a veth via rt-link,
verify netdev notification is received, then delete the veth

Remove stdin/scanf-based UI. Add rt-link dependency for the veth
notification test.

TAP version 13
1..3
# Starting 3 tests from 1 test cases.
# RUN netdev.dump ...
# lo[1] xdp-features (0): xdp-rx-metadata-features (0): xsk-fea...
# sit0[2] xdp-features (0): xdp-rx-metadata-features (0): xsk-fea...
# OK netdev.dump
ok 1 netdev.dump
# RUN netdev.get ...
# lo[1] xdp-features (0): xdp-rx-metadata-features (0): xsk-fea...
# OK netdev.get
ok 2 netdev.get
# RUN netdev.ntf_check ...
# veth0[7] xdp-features (0): xdp-rx-metadata-features (7): timesta...
# OK netdev.ntf_check
ok 3 netdev.ntf_check
# PASSED: 3 / 3 tests passed.
# Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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tools: ynl: move samples to tests

The "samples" were always poor man's tests (used to manually
confirm that C YNL works).

Move all C sample programs from tools/net/ynl/samples/ to
tools/net/ynl/tes

tools: ynl: move samples to tests

The "samples" were always poor man's tests (used to manually
confirm that C YNL works).

Move all C sample programs from tools/net/ynl/samples/ to
tools/net/ynl/tests/, "merge" the Makefiles. The subsequent
changes will convert each sample into a proper KTAP selftests.

Since these are now tests rather than samples - default to
enabling asan. After all we're testing user space code here.

Sort the gitignore while at it, the page-pool entry was a leftover
so delete it.

Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Tested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20260307033630.1396085-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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