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IB/core: Add interface to advise_mr for kernel users 

Allow ULPs to call advise_mr, so they can control ODP regions
in the same way as user space applications.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Moni Shoua 2020-01-15 14:43:33 +02:00 committed by Leon Romanovsky
parent 33006bd4f3
commit 87d8069f6b
2 changed files with 14 additions and 0 deletions
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11
drivers/infiniband/core/verbs.c
View File

@ -2020,6 +2020,17 @@ struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
}
EXPORT_SYMBOL(ib_reg_user_mr);
int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice,
u32 flags, struct ib_sge *sg_list, u32 num_sge)
{
if (!pd->device->ops.advise_mr)
return -EOPNOTSUPP;
return pd->device->ops.advise_mr(pd, advice, flags, sg_list, num_sge,
NULL);
}
EXPORT_SYMBOL(ib_advise_mr);
int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata)
{
struct ib_pd *pd = mr->pd;

3
include/rdma/ib_verbs.h
View File

@ -4159,6 +4159,9 @@ static inline void ib_dma_free_coherent(struct ib_device *dev,
struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u64 virt_addr, int mr_access_flags);
/* ib_advise_mr - give an advice about an address range in a memory region */
int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice,
u32 flags, struct ib_sge *sg_list, u32 num_sge);
/**
* ib_dereg_mr_user - Deregisters a memory region and removes it from the
* HCA translation table.