diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/rdma/frmr_pools.h | 37 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 8 |
2 files changed, 45 insertions, 0 deletions
diff --git a/include/rdma/frmr_pools.h b/include/rdma/frmr_pools.h new file mode 100644 index 000000000000..9ef41eb43e4b --- /dev/null +++ b/include/rdma/frmr_pools.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB + * + * Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved. + */ + +#ifndef FRMR_POOLS_H +#define FRMR_POOLS_H + +#include <linux/types.h> +#include <asm/page.h> + +struct ib_device; +struct ib_mr; + +struct ib_frmr_key { + u64 vendor_key; + /* A pool with non-zero kernel_vendor_key is a kernel-only pool. */ + u64 kernel_vendor_key; + size_t num_dma_blocks; + int access_flags; + u8 ats:1; +}; + +struct ib_frmr_pool_ops { + int (*create_frmrs)(struct ib_device *device, struct ib_frmr_key *key, + u32 *handles, u32 count); + void (*destroy_frmrs)(struct ib_device *device, u32 *handles, + u32 count); +}; + +int ib_frmr_pools_init(struct ib_device *device, + const struct ib_frmr_pool_ops *pool_ops); +void ib_frmr_pools_cleanup(struct ib_device *device); +int ib_frmr_pool_pop(struct ib_device *device, struct ib_mr *mr); +int ib_frmr_pool_push(struct ib_device *device, struct ib_mr *mr); + +#endif /* FRMR_POOLS_H */ diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 1b77fd88d0fb..ba34b131e9be 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -44,6 +44,7 @@ #include <uapi/rdma/rdma_user_ioctl.h> #include <uapi/rdma/ib_user_ioctl_verbs.h> #include <linux/pci-tph.h> +#include <rdma/frmr_pools.h> #include <linux/dma-buf.h> #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN @@ -1905,6 +1906,11 @@ struct ib_mr { struct ib_dm *dm; struct ib_sig_attrs *sig_attrs; /* only for IB_MR_TYPE_INTEGRITY MRs */ struct ib_dmah *dmah; + struct { + struct ib_frmr_pool *pool; + struct ib_frmr_key key; + u32 handle; + } frmr; /* * Implementation details of the RDMA core, don't use in drivers: */ @@ -2907,6 +2913,8 @@ struct ib_device { struct list_head subdev_list; enum rdma_nl_name_assign_type name_assign_type; + + struct ib_frmr_pools *frmr_pools; }; static inline void *rdma_zalloc_obj(struct ib_device *dev, size_t size, |