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RDMA/core: Remove FMR device ops 

After removing FMR support from all the RDMA ULPs and providers, there
is no need to keep FMR operation for IB devices.

Link: https://lore.kernel.org/r/11-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Max Gurtovoy 2020-05-28 16:45:53 -03:00 committed by Jason Gunthorpe
parent 22c9cc2408
commit 3a578152a9
4 changed files with 0 additions and 113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/infiniband/core_locking.rst
View File

@ -22,7 +22,6 @@ Sleeping and interrupt context
- post_recv
- poll_cq
- req_notify_cq
- map_phys_fmr
which may not sleep and must be callable from any context.
@ -36,7 +35,6 @@ Sleeping and interrupt context
- ib_post_send
- ib_post_recv
- ib_req_notify_cq
- ib_map_phys_fmr
are therefore safe to call from any context.

4
drivers/infiniband/core/device.c
View File

@ -2571,7 +2571,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, add_gid);
SET_DEVICE_OP(dev_ops, advise_mr);
SET_DEVICE_OP(dev_ops, alloc_dm);
SET_DEVICE_OP(dev_ops, alloc_fmr);
SET_DEVICE_OP(dev_ops, alloc_hw_stats);
SET_DEVICE_OP(dev_ops, alloc_mr);
SET_DEVICE_OP(dev_ops, alloc_mr_integrity);
@ -2598,7 +2597,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, create_wq);
SET_DEVICE_OP(dev_ops, dealloc_dm);
SET_DEVICE_OP(dev_ops, dealloc_driver);
SET_DEVICE_OP(dev_ops, dealloc_fmr);
SET_DEVICE_OP(dev_ops, dealloc_mw);
SET_DEVICE_OP(dev_ops, dealloc_pd);
SET_DEVICE_OP(dev_ops, dealloc_ucontext);
@ -2642,7 +2640,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, iw_rem_ref);
SET_DEVICE_OP(dev_ops, map_mr_sg);
SET_DEVICE_OP(dev_ops, map_mr_sg_pi);
SET_DEVICE_OP(dev_ops, map_phys_fmr);
SET_DEVICE_OP(dev_ops, mmap);
SET_DEVICE_OP(dev_ops, mmap_free);
SET_DEVICE_OP(dev_ops, modify_ah);
@ -2676,7 +2673,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, resize_cq);
SET_DEVICE_OP(dev_ops, set_vf_guid);
SET_DEVICE_OP(dev_ops, set_vf_link_state);
SET_DEVICE_OP(dev_ops, unmap_fmr);
SET_OBJ_SIZE(dev_ops, ib_ah);
SET_OBJ_SIZE(dev_ops, ib_cq);

48
drivers/infiniband/core/verbs.c
View File

@ -2212,54 +2212,6 @@ out:
}
EXPORT_SYMBOL(ib_alloc_mr_integrity);
/* "Fast" memory regions */
struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
int mr_access_flags,
struct ib_fmr_attr *fmr_attr)
{
struct ib_fmr *fmr;
if (!pd->device->ops.alloc_fmr)
return ERR_PTR(-EOPNOTSUPP);
fmr = pd->device->ops.alloc_fmr(pd, mr_access_flags, fmr_attr);
if (!IS_ERR(fmr)) {
fmr->device = pd->device;
fmr->pd = pd;
atomic_inc(&pd->usecnt);
}
return fmr;
}
EXPORT_SYMBOL(ib_alloc_fmr);
int ib_unmap_fmr(struct list_head *fmr_list)
{
struct ib_fmr *fmr;
if (list_empty(fmr_list))
return 0;
fmr = list_entry(fmr_list->next, struct ib_fmr, list);
return fmr->device->ops.unmap_fmr(fmr_list);
}
EXPORT_SYMBOL(ib_unmap_fmr);
int ib_dealloc_fmr(struct ib_fmr *fmr)
{
struct ib_pd *pd;
int ret;
pd = fmr->pd;
ret = fmr->device->ops.dealloc_fmr(fmr);
if (!ret)
atomic_dec(&pd->usecnt);
return ret;
}
EXPORT_SYMBOL(ib_dealloc_fmr);
/* Multicast groups */
static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid)

59
include/rdma/ib_verbs.h
View File

@ -1475,12 +1475,6 @@ enum ib_mr_rereg_flags {
IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
};
struct ib_fmr_attr {
int max_pages;
int max_maps;
u8 page_shift;
};
struct ib_umem;
enum rdma_remove_reason {
@ -1855,14 +1849,6 @@ struct ib_mw {
enum ib_mw_type type;
};
struct ib_fmr {
struct ib_device *device;
struct ib_pd *pd;
struct list_head list;
u32 lkey;
u32 rkey;
};
/* Supported steering options */
enum ib_flow_attr_type {
/* steering according to rule specifications */
@ -2505,12 +2491,6 @@ struct ib_device_ops {
struct ib_mw *(*alloc_mw)(struct ib_pd *pd, enum ib_mw_type type,
struct ib_udata *udata);
int (*dealloc_mw)(struct ib_mw *mw);
struct ib_fmr *(*alloc_fmr)(struct ib_pd *pd, int mr_access_flags,
struct ib_fmr_attr *fmr_attr);
int (*map_phys_fmr)(struct ib_fmr *fmr, u64 *page_list, int list_len,
u64 iova);
int (*unmap_fmr)(struct list_head *fmr_list);
int (*dealloc_fmr)(struct ib_fmr *fmr);
int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
struct ib_xrcd *(*alloc_xrcd)(struct ib_device *device,
@ -4319,45 +4299,6 @@ static inline u32 ib_inc_rkey(u32 rkey)
return ((rkey + 1) & mask) | (rkey & ~mask);
}
/**
* ib_alloc_fmr - Allocates a unmapped fast memory region.
* @pd: The protection domain associated with the unmapped region.
* @mr_access_flags: Specifies the memory access rights.
* @fmr_attr: Attributes of the unmapped region.
*
* A fast memory region must be mapped before it can be used as part of
* a work request.
*/
struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
int mr_access_flags,
struct ib_fmr_attr *fmr_attr);
/**
* ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
* @fmr: The fast memory region to associate with the pages.
* @page_list: An array of physical pages to map to the fast memory region.
* @list_len: The number of pages in page_list.
* @iova: The I/O virtual address to use with the mapped region.
*/
static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
u64 *page_list, int list_len,
u64 iova)
{
return fmr->device->ops.map_phys_fmr(fmr, page_list, list_len, iova);
}
/**
* ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
* @fmr_list: A linked list of fast memory regions to unmap.
*/
int ib_unmap_fmr(struct list_head *fmr_list);
/**
* ib_dealloc_fmr - Deallocates a fast memory region.
* @fmr: The fast memory region to deallocate.
*/
int ib_dealloc_fmr(struct ib_fmr *fmr);
/**
* ib_attach_mcast - Attaches the specified QP to a multicast group.
* @qp: QP to attach to the multicast group. The QP must be type