kernel/linux.git/tools/net/ynl/samples/netdev.c, branch v6.12.80

tools: ynl: error check scanf() in a sample

2024-08-29T19:43:29+00:00

Someone reported on GitHub that the YNL NIPA test is failing when run locally. The test builds the tools, and it hits: netdev.c:82:9: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 82 | scanf("%d", &ifindex); I can't repro this on my setups but error seems clear enough. Link: https://github.com/linux-netdev/nipa/discussions/37 Reviewed-by: Simon Horman Reviewed-by: Nicolas Dichtel Link: https://patch.msgid.link/20240828173609.2951335-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: add ynl_dump_empty() helper

2024-04-03T01:01:58+00:00

Checking if dump is empty requires a couple of casts. Add a convenient wrapper. Add an example use in the netdev sample, loopback is always present so an empty dump is an error. Reviewed-by: Nicolas Dichtel Link: https://lore.kernel.org/r/20240329181651.319326-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: Print xsk-features from the sample

2023-11-29T22:59:40+00:00

In a similar fashion we do for the other bit masks. Fix mask parsing (>= vs >) while we are it. Signed-off-by: Stanislav Fomichev Reviewed-by: Jakub Kicinski Link: https://lore.kernel.org/r/20231127190319.1190813-4-sdf@google.com Signed-off-by: Alexei Starovoitov

tools: ynl: extend netdev sample to dump xdp-rx-metadata-features

2023-09-15T18:26:58+00:00

The tool can be used to verify that everything works end to end. Unrelated updates: - include tools/include/uapi to pick the latest kernel uapi headers - print "xdp-features" and "xdp-rx-metadata-features" so it's clear which bitmask is being dumped Cc: netdev@vger.kernel.org Cc: Willem de Bruijn Signed-off-by: Stanislav Fomichev Link: https://lore.kernel.org/r/20230913171350.369987-4-sdf@google.com Signed-off-by: Martin KaFai Lau

ynl: print xdp-zc-max-segs in the sample

2023-07-28T16:33:12+00:00

Technically we don't have to keep extending the sample, but it feels useful to run these tools locally to confirm everything is working. Signed-off-by: Stanislav Fomichev Reviewed-by: Jakub Kicinski Link: https://lore.kernel.org/r/20230727163001.3952878-5-sdf@google.com Signed-off-by: Jakub Kicinski

tools: ynl: add sample for netdev

2023-06-06T19:31:32+00:00

Add a sample application using the C library. My main goal is to make writing selftests easier but until I have some of those ready I think it's useful to show off the functionality and let people poke and tinker. Sample outputs - dump: $ ./netdev Select ifc ($ifindex; or 0 = dump; or -2 ntf check): 0 lo[1] 0: enp1s0[2] 23: basic redirect rx-sg Notifications (watching veth pair getting added and deleted): $ ./netdev Select ifc ($ifindex; or 0 = dump; or -2 ntf check): -2 [53] 0: (ntf: dev-add-ntf) [54] 0: (ntf: dev-add-ntf) [54] 23: basic redirect rx-sg (ntf: dev-change-ntf) [53] 23: basic redirect rx-sg (ntf: dev-change-ntf) [53] 23: basic redirect rx-sg (ntf: dev-del-ntf) [54] 23: basic redirect rx-sg (ntf: dev-del-ntf) Reviewed-by: Willem de Bruijn Signed-off-by: Jakub Kicinski