linux/include/net/devlink.h, branch v6.17

devlink: let driver opt out of automatic phys_port_name generation

2025-08-12T20:23:39Z

Currently when adding devlink port, phys_port_name is automatically generated within devlink port initialization flow. As a result adding devlink port support to driver may result in forced changes of interface names, which breaks already existing network configs. This is an expected behavior but in some scenarios it would not be preferable to provide such limitation for legacy driver not being able to keep 'pre-devlink' interface name. Add flag no_phys_port_name to devlink_port_attrs struct which indicates if devlink should not alter name of interface. Suggested-by: Jiri Pirko Link: https://lore.kernel.org/all/nbwrfnjhvrcduqzjl4a2jafnvvud6qsbxlvxaxilnryglf4j7r@btuqrimnfuly/ Signed-off-by: Jedrzej Jagielski Signed-off-by: Tony Nguyen

devlink: Add new "clock_id" generic device param

2025-07-10T02:08:52Z

Add a new device generic parameter to specify clock ID that should be used by the device for registering DPLL devices and pins. Signed-off-by: Ivan Vecera Reviewed-by: Jiri Pirko Link: https://patch.msgid.link/20250704182202.1641943-5-ivecera@redhat.com Signed-off-by: Jakub Kicinski

devlink: Add support for u64 parameters

2025-07-10T02:08:52Z

Only 8, 16 and 32-bit integers are supported for numeric devlink parameters. The subsequent patch adds support for DPLL clock ID that is defined as 64-bit number. Add support for u64 parameter type. Signed-off-by: Ivan Vecera Reviewed-by: Jiri Pirko Link: https://patch.msgid.link/20250704182202.1641943-4-ivecera@redhat.com Signed-off-by: Jakub Kicinski

devlink: Extend devlink rate API with traffic classes bandwidth management

2025-07-02T22:39:05Z

Introduce support for specifying relative bandwidth shares between traffic classes (TC) in the devlink-rate API. This new option allows users to allocate bandwidth across multiple traffic classes in a single command. This feature provides a more granular control over traffic management, especially for scenarios requiring Enhanced Transmission Selection. Users can now define a relative bandwidth share for each traffic class. For example, assigning share values of 20 to TC0 (TCP/UDP) and 80 to TC5 (RoCE) will result in TC0 receiving 20% and TC5 receiving 80% of the total bandwidth. The actual percentage each class receives depends on the ratio of its share value to the sum of all shares. Example: DEV=pci/0000:08:00.0 $ devlink port function rate add $DEV/vfs_group tx_share 10Gbit \ tx_max 50Gbit tc-bw 0:20 1:0 2:0 3:0 4:0 5:80 6:0 7:0 $ devlink port function rate set $DEV/vfs_group \ tc-bw 0:20 1:0 2:0 3:0 4:0 5:20 6:60 7:0 Example usage with ynl: ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/devlink.yaml \ --do rate-set --json '{ "bus-name": "pci", "dev-name": "0000:08:00.0", "port-index": 1, "rate-tc-bws": [ {"rate-tc-index": 0, "rate-tc-bw": 50}, {"rate-tc-index": 1, "rate-tc-bw": 50}, {"rate-tc-index": 2, "rate-tc-bw": 0}, {"rate-tc-index": 3, "rate-tc-bw": 0}, {"rate-tc-index": 4, "rate-tc-bw": 0}, {"rate-tc-index": 5, "rate-tc-bw": 0}, {"rate-tc-index": 6, "rate-tc-bw": 0}, {"rate-tc-index": 7, "rate-tc-bw": 0} ] }' ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/devlink.yaml \ --do rate-get --json '{ "bus-name": "pci", "dev-name": "0000:08:00.0", "port-index": 1 }' output for rate-get: {'bus-name': 'pci', 'dev-name': '0000:08:00.0', 'port-index': 1, 'rate-tc-bws': [{'rate-tc-bw': 50, 'rate-tc-index': 0}, {'rate-tc-bw': 50, 'rate-tc-index': 1}, {'rate-tc-bw': 0, 'rate-tc-index': 2}, {'rate-tc-bw': 0, 'rate-tc-index': 3}, {'rate-tc-bw': 0, 'rate-tc-index': 4}, {'rate-tc-bw': 0, 'rate-tc-index': 5}, {'rate-tc-bw': 0, 'rate-tc-index': 6}, {'rate-tc-bw': 0, 'rate-tc-index': 7}], 'rate-tx-max': 0, 'rate-tx-priority': 0, 'rate-tx-share': 0, 'rate-tx-weight': 0, 'rate-type': 'leaf'} Signed-off-by: Carolina Jubran Reviewed-by: Cosmin Ratiu Reviewed-by: Jiri Pirko Signed-off-by: Tariq Toukan Signed-off-by: Mark Bloch Link: https://patch.msgid.link/20250629142138.361537-3-mbloch@nvidia.com Signed-off-by: Jakub Kicinski

devlink: Add new "enable_phc" generic device param

2025-06-19T01:57:29Z

Add a new device generic parameter to enable/disable the PHC (PTP Hardware Clock) functionality in the device associated with the devlink instance. Signed-off-by: David Arinzon Reviewed-by: Jiri Pirko Link: https://patch.msgid.link/20250617110545.5659-6-darinzon@amazon.com Signed-off-by: Jakub Kicinski

devlink: avoid param type value translations

2025-05-07T01:21:11Z

Assign DEVLINK_PARAM_TYPE_* enum values to DEVLINK_VAR_ATTR_TYPE_* to ensure the same values are used internally and in UAPI. Benefit from that by removing the value translations. Signed-off-by: Jiri Pirko Link: https://patch.msgid.link/20250505114513.53370-4-jiri@resnulli.us Signed-off-by: Jakub Kicinski

devlink: add devl guard

2025-01-16T21:04:58Z

Add devl guard for scoped_guard(). Example usage: scoped_guard(devl, priv_to_devlink(pf)) { err = init_devlink(pf); if (err) return err; } Co-developed-by: Przemek Kitszel Signed-off-by: Przemek Kitszel Signed-off-by: Konrad Knitter Tested-by: Pucha Himasekhar Reddy (A Contingent worker at Intel) Signed-off-by: Tony Nguyen

devlink: Improve the port attributes description

2025-01-03T01:10:57Z

Current PF number description is vague, sometimes interpreted as some PF index. VF number in the PCI specification starts at 1; however in kernel, it starts at 0 for representor model. Improve the description of devlink port attributes PF, VF and SF numbers with these details. Reviewed-by: Sridhar Samudrala Reviewed-by: Shay Drory Reviewed-by: Mark Bloch Reviewed-by: Jiri Pirko Signed-off-by: Parav Pandit Link: https://patch.msgid.link/20241224183706.26571-1-parav@nvidia.com Signed-off-by: Jakub Kicinski

devlink: add devlink_fmsg_dump_skb() function

2024-12-17T17:32:08Z

Add devlink_fmsg_dump_skb() function that adds some diagnostic information about skb (like length, pkt type, MAC, etc) to devlink fmsg mechanism using bunch of devlink_fmsg_put() function calls. Signed-off-by: Mateusz Polchlopek Tested-by: Pucha Himasekhar Reddy (A Contingent worker at Intel) Signed-off-by: Przemek Kitszel Signed-off-by: Tony Nguyen

devlink: add devlink_fmsg_put() macro

2024-12-17T17:32:08Z

Add devlink_fmsg_put() that dispatches based on the type of the value to put, example: bool -> devlink_fmsg_bool_pair_put(). Reviewed-by: Wojciech Drewek Reviewed-by: Simon Horman Signed-off-by: Mateusz Polchlopek Tested-by: Pucha Himasekhar Reddy (A Contingent worker at Intel) Signed-off-by: Przemek Kitszel Signed-off-by: Tony Nguyen