wireguard-linux/include/linux/mlx5, branch devel

net/mlx5: use internal dma pools for frag buf alloc

2026-05-02T02:02:07Z

Add mlx5_dma_pool alloc/free paths, and wire mlx5_frag_buf allocation and free paths to use them. mlx5_frag_buf_alloc_node() now selects an mlx5_dma_pool to allocate fragments from, instead of directly allocating full coherent pages. mlx5_frag_buf_free() frees from the respective pool. mlx5_dma_pool_alloc() keeps allocation fast by maintaining pages with available indexes at the head of the list, so the common allocation path can take a free index immediately. New backing pages are allocated only when no free index is available. mlx5_dma_pool_free() returns released indexes to the pool and frees a backing page once all of its indexes become free. This avoids keeping fully free pages for the lifetime of the pool and reduces coherent DMA memory footprint. Signed-off-by: Nimrod Oren Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260429201429.223809-4-tariqt@nvidia.com Signed-off-by: Jakub Kicinski

net/mlx5: add frag buf pools create/destroy paths

2026-05-02T02:02:07Z

Introduce mlx5 DMA pool and pool-page data structures, and add the creation and teardown paths. Each NUMA node owns a set of mlx5_dma_pool instances, each one with a different block size. The sizes are defined as all powers of two starting from MLX5_ADAPTER_PAGE_SHIFT and up to PAGE_SHIFT. Since mlx5_frag_bufs are used to back objects whose sizes are encoded relative to MLX5_ADAPTER_PAGE_SHIFT, a smaller block_shift value cannot be used. Requests larger than PAGE_SIZE continue to be handled as page-sized fragments, as in the existing frag-buf allocation model. Signed-off-by: Nimrod Oren Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260429201429.223809-3-tariqt@nvidia.com Signed-off-by: Jakub Kicinski

net/mlx5: Extend query_esw_functions output for multi-function support

2026-04-29T20:28:30Z

Update the query_esw_functions command to support a new response layout that can report data for multiple network functions. Setting bit 14 of the op_mod field selects the v1 layout with network_function_params entries instead of the legacy host_params_context. The query_host_net_function_v1 read-only capability indicates firmware support for layout version 1, and query_host_net_function_num_max advertises the maximum number of network function entries. Define a new network_function_params layout and a net_function_params union that groups host_params_context and network_function_params. Rework the query_esw_functions output to use a flexible array of this union, and adjust existing driver callers to use it. Signed-off-by: Moshe Shemesh Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260428053851.220089-5-tariqt@nvidia.com Signed-off-by: Leon Romanovsky

net/mlx5: Remove unused host_sf_enable field

2026-04-29T20:28:30Z

Drop the unused host_sf_enable array from mlx5_ifc_query_esw_functions_out_bits layout. This field has been deprecated in firmware and is not referenced by the mlx5 driver, so it can be safely removed. Signed-off-by: Moshe Shemesh Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260428053851.220089-4-tariqt@nvidia.com Signed-off-by: Leon Romanovsky

net/mlx5: Add function_id_type for enable/disable_hca cmds

2026-04-29T20:28:30Z

Add a function_id_type field to the enable_hca and disable_hca command input layouts in mlx5_ifc.h to allow using vhca_id as the function index instead of function_id. The new field support by firmware is indicated by the function_id_type_vhca_id capability bit, which is already exposed in hca caps. Signed-off-by: Moshe Shemesh Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260428053851.220089-3-tariqt@nvidia.com Signed-off-by: Leon Romanovsky

mlx5: Rename the vport number enums for host PF and VF

2026-04-29T20:28:30Z

Rename the vport number enums MLX5_VPORT_PF to MLX5_VPORT_HOST_PF and MLX5_VPORT_FIRST_VF to MLX5_VPORT_FIRST_HOST_VF to indicate that these vport indices represent the host PF and its VFs. This prepares the code for upcoming support of an additional PF type. Signed-off-by: Moshe Shemesh Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260428053851.220089-2-tariqt@nvidia.com Signed-off-by: Leon Romanovsky

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

2026-04-20T18:20:35Z

Pull rdma updates from Jason Gunthorpe: "The usual collection of driver changes, more core infrastructure updates that typical this cycle: - Minor cleanups and kernel-doc fixes in bnxt_re, hns, rdmavt, efa, ocrdma, erdma, rtrs, hfi1, ionic, and pvrdma - New udata validation framework and driver updates - Modernize CQ creation interface in mlx4 and mlx5, manage CQ umem in core - Promote UMEM to a core component, split out DMA block iterator logic - Introduce FRMR pools with aging, statistics, pinned handles, and netlink control and use it in mlx5 - Add PCIe TLP emulation support in mlx5 - Extend umem to work with revocable pinned dmabuf's and use it in irdma - More net namespace improvements for rxe - GEN4 hardware support in irdma - First steps to MW and UC support in mana_ib - Support for CQ umem and doorbells in bnxt_re - Drop opa_vnic driver from hfi1 Fixes: - IB/core zero dmac neighbor resolution race - GID table memory free - rxe pad/ICRC validation and r_key async errors - mlx4 external umem for CQ - umem DMA attributes on unmap - mana_ib RX steering on RSS QP destroy" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (116 commits) RDMA/core: Fix user CQ creation for drivers without create_cq RDMA/ionic: bound node_desc sysfs read with %.64s IB/core: Fix zero dmac race in neighbor resolution RDMA/mana_ib: Support memory windows RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv RDMA/core: Prefer NLA_NUL_STRING RDMA/core: Fix memory free for GID table RDMA/hns: Remove the duplicate calls to ib_copy_validate_udata_in() RDMA: Remove redundant = {} for udata req structs RDMA/irdma: Add missing comp_mask check in alloc_ucontext RDMA/hns: Add missing comp_mask check in create_qp RDMA/mlx5: Pull comp_mask validation into ib_copy_validate_udata_in_cm() RDMA: Use ib_copy_validate_udata_in_cm() for zero comp_mask RDMA/hns: Use ib_copy_validate_udata_in() RDMA/mlx4: Use ib_copy_validate_udata_in() for QP RDMA/mlx4: Use ib_copy_validate_udata_in() RDMA/mlx5: Use ib_copy_validate_udata_in() for MW RDMA/mlx5: Use ib_copy_validate_udata_in() for SRQ RDMA/pvrdma: Use ib_copy_validate_udata_in() for srq RDMA: Use ib_copy_validate_udata_in() for implicit full structs ...

Merge tag 'vfio-v7.1-rc1' of https://github.com/awilliam/linux-vfio

2026-04-16T15:01:16Z

Pull VFIO updates from Alex Williamson: - Update QAT vfio-pci variant driver for Gen 5, 420xx devices (Vijay Sundar Selvamani, Suman Kumar Chakraborty, Giovanni Cabiddu) - Fix vfio selftest MMIO DMA mapping selftest (Alex Mastro) - Conversions to const struct class in support of class_create() deprecation (Jori Koolstra) - Improve selftest compiler compatibility by avoiding initializer on variable-length array (Manish Honap) - Define new uAPI for drivers supporting migration to advise user- space of new initial data for reducing target startup latency. Implemented for mlx5 vfio-pci variant driver (Yishai Hadas) - Enable vfio selftests on aarch64, not just cross-compiles reporting arm64 (Ted Logan) - Update vfio selftest driver support to include additional DSA devices (Yi Lai) - Unconditionally include debugfs root pointer in vfio device struct, avoiding a build failure seen in hisi_acc variant driver without debugfs otherwise (Arnd Bergmann) - Add support for the s390 ISM (Internal Shared Memory) device via a new variant driver. The device is unique in the size of its BAR space (256TiB) and lack of mmap support (Julian Ruess) - Enforce that vfio-pci drivers implement a name in their ops structure for use in sequestering SR-IOV VFs (Alex Williamson) - Prune leftover group notifier code (Paolo Bonzini) - Fix Xe vfio-pci variant driver to avoid migration support as a dependency in the reset path and missing release call (Michał Winiarski) * tag 'vfio-v7.1-rc1' of https://github.com/awilliam/linux-vfio: (23 commits) vfio/xe: Add a missing vfio_pci_core_release_dev() vfio/xe: Reorganize the init to decouple migration from reset vfio: remove dead notifier code vfio/pci: Require vfio_device_ops.name MAINTAINERS: add VFIO ISM PCI DRIVER section vfio/ism: Implement vfio_pci driver for ISM devices vfio/pci: Rename vfio_config_do_rw() to vfio_pci_config_rw_single() and export it vfio: unhide vdev->debug_root vfio/qat: add support for Intel QAT 420xx VFs vfio: selftests: Support DMR and GNR-D DSA devices vfio: selftests: Build tests on aarch64 vfio/mlx5: Add REINIT support to VFIO_MIG_GET_PRECOPY_INFO vfio/mlx5: consider inflight SAVE during PRE_COPY net/mlx5: Add IFC bits for migration state vfio: Adapt drivers to use the core helper vfio_check_precopy_ioctl vfio: Add support for VFIO_DEVICE_FEATURE_MIG_PRECOPY_INFOv2 vfio: Define uAPI for re-init initial bytes during the PRE_COPY phase vfio: selftests: Fix VLA initialisation in vfio_pci_irq_set() vfio: uapi: fix comment typo vfio: mdev: replace mtty_dev->vd_class with a const struct class ...

Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

2026-04-12T21:34:28Z

Tariq Toukan says: ==================== mlx5-next updates 2026-04-09 * 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux: net/mlx5: Add icm_mng_function_id_mode cap bit net/mlx5: Rename MLX5_PF page counter type to MLX5_SELF net/mlx5: Add vhca_id_type bit to alias context mlx5: Remove redundant iseg base ==================== Link: https://patch.msgid.link/20260409110431.154894-1-tariqt@nvidia.com Signed-off-by: Jakub Kicinski

net/mlx5: Add icm_mng_function_id_mode cap bit

2026-04-09T09:26:39Z

Introduce the capability bit icm_mng_function_id_mode to indicate that the device firmware uses vhca_id instead of function_id as the effective identifier for the firmware commands MANAGE_PAGES, QUERY_PAGES, and page request event. Signed-off-by: Moshe Shemesh Reviewed-by: Akiva Goldberger Reviewed-by: Mark Bloch Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260403090028.137783-3-tariqt@nvidia.com Signed-off-by: Leon Romanovsky