kernel/tools/net/ynl/samples/Makefile, branch linux-rolling-stable

ynl: samples: add tc filter example

2025-11-21T02:20:40Z

Add a sample tool demonstrating how to add, dump, and delete a flower filter with two VLAN push actions. The example can be invoked as: # samples/tc-filter-add p2 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 This verifies correct handling of tc action attributes for multiple VLAN push actions. The tc action indexed arrays start from index 1, and the index defines the action order. This behavior differs from the YNL specification, which expects arrays to be zero-based. To accommodate this, the example adds a dummy action at index 0, which is ignored by the kernel. Signed-off-by: Zahari Doychev Link: https://patch.msgid.link/20251119203618.263780-2-zahari.doychev@linux.com Signed-off-by: Jakub Kicinski

tools: ynl: extend CFLAGS to keep options from environment

2024-11-14T02:43:46Z

Package build environments like Fedora rpmbuild introduced hardening options (e.g. -pie -Wl,-z,now) by passing a -spec option to CFLAGS and LDFLAGS. ynl Makefiles currently override CFLAGS but not LDFLAGS, which leads to a mismatch and build failure: CC sample devlink /usr/bin/ld: devlink.o: relocation R_X86_64_32 against symbol `ynl_devlink_family' can not be used when making a PIE object; recompile with -fPIE /usr/bin/ld: failed to set dynamic section sizes: bad value collect2: error: ld returned 1 exit status Extend CFLAGS to support hardening options set by build environment. Signed-off-by: Jan Stancek Acked-by: Jakub Kicinski Reviewed-by: Donald Hunter Link: https://patch.msgid.link/265b2d5d3a6d4721a161219f081058ed47dc846a.1731399562.git.jstancek@redhat.com Signed-off-by: Jakub Kicinski

tools: ynl: add distclean to .PHONY in all makefiles

2024-03-06T12:05:10Z

Donald points out most YNL makefiles are missing distclean in .PHONY, even tho generated/Makefile does list it. Suggested-by: Donald Hunter Signed-off-by: Jakub Kicinski Reviewed-by: Donald Hunter Signed-off-by: David S. Miller

tools: ynl: rename make hardclean -> distclean

2024-03-06T12:05:10Z

The make target to remove all generated files used to be called "hardclean" because it deleted files which were tracked by git. We no longer track generated user space files, so use the more common "distclean" name. Signed-off-by: Jakub Kicinski Reviewed-by: Donald Hunter Signed-off-by: David S. Miller

tools: ynl: remove the libmnl dependency

2024-02-28T23:25:45Z

We don't use libmnl any more. Acked-by: Nicolas Dichtel Link: https://lore.kernel.org/r/20240227223032.1835527-15-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: make sure we use local headers for page-pool

2023-11-30T00:07:00Z

Building samples generates the following warning: In file included from page-pool.c:11: generated/netdev-user.h:21:45: warning: ‘enum netdev_xdp_rx_metadata’ declared inside parameter list will not be visible outside of this definition or declaration 21 | const char *netdev_xdp_rx_metadata_str(enum netdev_xdp_rx_metadata value); | ^~~~~~~~~~~~~~~~~~~~~~ Our magic way of including uAPI headers assumes the sample name matches the family name. We need to copy the flags over. Fixes: 637567e4a3ef ("tools: ynl: add sample for getting page-pool information") Link: https://lore.kernel.org/r/20231129193622.2912353-3-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: add sample for getting page-pool information

2023-11-28T14:48:39Z

Regenerate the tools/ code after netdev spec changes. Add sample to query page-pool info in a concise fashion: $ ./page-pool eth0[2] page pools: 10 (zombies: 0) refs: 41984 bytes: 171966464 (refs: 0 bytes: 0) recycling: 90.3% (alloc: 656:397681 recycle: 89652:270201) Acked-by: Jesper Dangaard Brouer Signed-off-by: Jakub Kicinski Signed-off-by: Paolo Abeni

tools: ynl: use uAPI include magic for samples

2023-10-05T00:33:54Z

Makefile.deps provides direct includes in CFLAGS_$(obj). We just need to rewrite the rules to make use of the extra flags, no need to hard-include all of tools/include/uapi. Acked-by: Stanislav Fomichev Link: https://lore.kernel.org/r/20231003153416.2479808-4-kuba@kernel.org Signed-off-by: Jakub Kicinski

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

2023-09-15T18:26:58Z

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

tools: ynl: work around stale system headers

2023-06-15T10:44:37Z

The inability to include the uAPI headers directly in tools/ is one of the bigger annoyances of compiling user space code. Most projects trade the pain for smaller inconvenience of having to copy the headers under tools/include. In case of netlink headers I think that we can avoid both. Netlink family headers are simple and should be self-contained. We can try to twiddle the Makefile a little to force-include just the family header, and use system headers for the rest. This works fairly well. There are two warts - for some reason if we specify -include $path/family.h as a compilation flag, the #ifdef header guard does not seem to work. So we need to throw the guard in on the command line as well. Seems like GCC detects that the header is different and tries to include both. Second problem is that make wants hash sign to be escaped or not depending on the version. Sigh. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller