[PATCH v2 00/23] Consolidate bus driver infrastructure

[Bruce Richardson]

On Wed, May 06, 2026 at 05:51:32PM +0200, David Marchand wrote:
> This is a continuation of the work I started on the bus infrastructure,
> but this time, a lot of the changes were done by a AI "friend".
> It is still an unfinished topic as the current series focuses on probing
> only. The detaching/cleanup aspect is postponed to another release/time.
> 
> My AI "friend" really *sucked* at git and at separating unrelated changes,
> so it required quite a lot of massage/polishing afterwards.
> But it seems good enough now for upstream submission.
> 
> I would like to see this series merged in 26.07, so that we have enough
> time to stabilize it before the next LTS.
> And seeing how it affects drivers, it is probably better to merge it
> the sooner possible (so Thomas does not have to solve too many conflicts
> when pulling next-* subtrees after, especially wrt the last patch).
> 
> 
> This series refactors the DPDK bus infrastructure to consolidate common
> operations and reduce code duplication across all bus drivers.
> Currently, each bus implements its own specific device/driver lists,
> probe logic, and lookup functions.
> This series moves these common patterns into the EAL bus layer,
> providing generic helpers that all buses can use.
> 
> The refactoring removes approximately 1,400 lines of duplicated code across
> the codebase while maintaining full functional equivalence.
> 
> Key changes:
> - Factorize device and driver lists into struct rte_bus
> - Implement generic probe, device/driver lookup, and iteration helpers in EAL
> - Introduce conversion macros (RTE_BUS_DEVICE, RTE_BUS_DRIVER, RTE_CLASS_TO_BUS_DEVICE)
>   to safely convert between generic and bus-specific types
> - Remove bus-specific device/driver types from most driver code
> - Move probe logic from individual buses to rte_bus_generic_probe()
> - Separate NXP-specific metadata from generic bus structures
> 
> Benefits:
> - Significant code reduction (~1,400 lines removed)
> - Consistent behavior across all bus types
> - Simplified bus driver implementation
> - Easier maintenance and future enhancements
> 
> The series is structured as a progressive refactoring:
> - Remove redundant checks and helpers (patches 1-5)
> - Add conversion macros and factorize lists (patches 6-8)
> - Consolidate device/driver lookup and iteration (patches 9-11)
> - Refactor probe logic (patches 12-15)
> - Remove bus-specific types from drivers (patches 16-23)
> 
> Note on ABI:
> This series breaks the ABI for drivers (changes to rte_pci_device,
> rte_pci_driver, and similar structures for other buses). However, the DPDK
> ABI policy does not provide guarantees for driver-level interfaces.
> 
> 
> -- 
> David Marchand
> 
> Changes since v1:
> - fix typo in Windows code for net/mlx5,
> 
In general a fan of cleanups in code, and this all seems reasonable.

With a fix added for idxd driver,

Series-Acked-by: Bruce Richardson <bruce.richardson at intel.com>