kernel/linux.git/tools/net/ynl/samples, branch v6.19.11

ynl: samples: Fix spelling mistake "failedq" -> "failed"

2025-12-01T19:54:09+00:00

There is a spelling mistake in an error message. Fix it. Signed-off-by: Colin Ian King Link: https://patch.msgid.link/20251128173802.318520-1-colin.i.king@gmail.com Signed-off-by: Jakub Kicinski

ynl: samples: add tc filter example

2025-11-21T02:20:40+00:00

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: ynltool: add page-pool stats

2025-11-11T11:21:04+00:00

Replace the page-pool sample with page pool support in ynltool. # ynltool page-pool stats eth0[2] page pools: 18 (zombies: 0) refs: 171456 bytes: 702283776 (refs: 0 bytes: 0) recycling: 97.3% (alloc: 2679:6134966 recycle: 1250981:4719386) # ynltool -j page-pool stats | jq [ { "ifname": "eth0", "ifindex": 2, "page_pools": 18, "zombies": 0, "live": { "refs": 171456, "bytes": 702283776 }, "zombie": { "refs": 0, "bytes": 0 }, "recycling_pct": 97.2746, "alloc": { "slow": 2679, "fast": 6135029 }, "recycle": { "ring": 1250997, "cache": 4719432 } } ] # ynltool page-pool stats group-by pp pool id: 108 dev: eth0[2] napi: 530 inflight: 9472 pages 38797312 bytes recycling: 95.5% (alloc: 148:208379 recycle: 45386:153842) pool id: 107 dev: eth0[2] napi: 529 inflight: 9408 pages 38535168 bytes recycling: 94.9% (alloc: 147:180178 recycle: 42251:128808) Signed-off-by: Jakub Kicinski Link: https://patch.msgid.link/20251107162227.980672-3-kuba@kernel.org Acked-by: Stanislav Fomichev Signed-off-by: Paolo Abeni

tools: ynl: add a sample for TC

2025-05-21T19:38:23+00:00

Add a very simple TC dump sample with decoding of fq_codel attrs: # ./tools/net/ynl/samples/tc dummy0: fq_codel limit: 10240p target: 5ms new_flow_cnt: 0 proving that selector passing (for stats) works. Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20250520161916.413298-13-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: add a sample for rt-link

2025-05-16T23:32:06+00:00

Add a fairly complete example of rt-link usage. If run without any arguments it simply lists the interfaces and some of their attrs. If run with an arg it tries to create and delete a netkit device. 1 # ./tools/net/ynl/samples/rt-link 1 2 Trying to create a Netkit interface 3 Testing error message for policy being bad: 4 Kernel error: 'Provided default xmit policy not supported' (bad attribute: .linkinfo.data(netkit).policy) 5 1: lo: mtu 65536 6 2: wlp0s1: mtu 1500 7 3: enp0s13: mtu 1500 8 4: dummy0: mtu 1500 kind dummy altname one two 9 5: nk0: mtu 1500 kind netkit primary 0 policy forward 10 6: nk1: mtu 1500 kind netkit primary 1 policy blackhole 11 Trying to delete a Netkit interface (ifindex 6) Sample creates the device first, it sets an invalid value for a netkit attribute to trigger reverse parsing. Line 4 shows the error with the attribute path correctly generated by YNL. Then sample fixes the bad attribute and re-issues the request, with NLM_F_ECHO set. This flag causes the notification to be looped back to the initiating socket (our socket). Sample parses this notification to save the ifindex of the created netkit. Sample then proceeds to list the devices. Line 8 above shows a dummy device with two alt names. Lines 9 and 10 show the netkit devices the sample itself created. The "primary" and "policy" attrs are from inside the netkit submsg. The string values are auto-generated for the enums by YNL. To clean up sample deletes the interface it created (line 11). Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20250515231650.1325372-10-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl-gen: move the count into a presence struct too

2025-05-08T01:21:26+00:00

While we reshuffle the presence members, move the counts as well. Previously array count members would have been place directly in the struct, so: struct family_op_req { struct { u32 a:1; u32 b:1; } _present; struct { u32 bin; } _len; u32 a; u64 b; const unsigned char *bin; u32 n_multi; << count u32 *multi; << objects }; Since len has been moved to its own presence struct move the count as well: struct family_op_req { struct { u32 a:1; u32 b:1; } _present; struct { u32 bin; } _len; struct { u32 multi; << count } _count; u32 a; u64 b; const unsigned char *bin; u32 *multi; << objects }; This improves the consistency and allows us to remove some hacks in the codegen. Unlike for len there is no known name collision with the existing scheme. Link: https://patch.msgid.link/20250505165208.248049-4-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl-gen: split presence metadata

2025-05-08T01:21:25+00:00

Each YNL struct contains the data and a sub-struct indicating which fields are valid. Something like: struct family_op_req { struct { u32 a:1; u32 b:1; u32 bin_len; } _present; u32 a; u64 b; const unsigned char *bin; }; Note that the bin object 'bin' has a length stored, and that length has a _len suffix added to the field name. This breaks if there is a explicit field called bin_len, which is the case for some TC actions. Move the length fields out of the _present struct, create a new struct called _len: struct family_op_req { struct { u32 a:1; u32 b:1; } _present; struct { u32 bin; } _len; u32 a; u64 b; const unsigned char *bin; }; This should prevent name collisions and help with the packing of the struct. Unfortunately this is a breaking change, but hopefully the migration isn't too painful. Link: https://patch.msgid.link/20250505165208.248049-3-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: generate code for rt-route and add a sample

2025-04-11T03:14:42+00:00

YNL C can now generate code for simple classic netlink families. Include rt-route in the Makefile for generation and add a sample. $ ./tools/net/ynl/samples/rt-route oif: wlp0s20f3 gateway: 192.168.1.1 oif: wlp0s20f3 dst: 192.168.1.0/24 oif: vpn0 dst: fe80::/64 oif: wlp0s20f3 dst: fe80::/64 oif: wlp0s20f3 gateway: fe80::200:5eff:fe00:201 Reviewed-by: Jacob Keller Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20250410014658.782120-14-kuba@kernel.org Signed-off-by: Jakub Kicinski

tools: ynl: generate code for rt-addr and add a sample

2025-04-11T03:14:41+00:00

YNL C can now generate code for simple classic netlink families. Include rt-addr in the Makefile for generation and add a sample. $ ./tools/net/ynl/samples/rt-addr lo: 127.0.0.1 wlp0s20f3: 192.168.1.101 lo: :: wlp0s20f3: fe80::6385:be6:746e:8116 vpn0: fe80::3597:d353:b5a7:66dd Reviewed-by: Jacob Keller Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20250410014658.782120-13-kuba@kernel.org Signed-off-by: Jakub Kicinski

ynl: samples: Fix the wrong format specifier

2024-11-14T02:48:15+00:00

Make a minor change to eliminate a static checker warning. The type of s->ifc is unsigned int, so the correct format specifier should be %u instead of %d. Signed-off-by: Luo Yifan Reviewed-by: Simon Horman Link: https://patch.msgid.link/20241113011142.290474-1-luoyifan@cmss.chinamobile.com Signed-off-by: Jakub Kicinski