diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-09-05 12:56:21 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-09-23 13:47:44 -0400 |
| commit | 5ef990f06bd7e3cf521b5705d898d8e43d04ea90 (patch) | |
| tree | 5fb4ffe4a54d1063fd26d08ac95383ab7f11a311 /include/rdma | |
| parent | 11975e0149002b88aa8003bfa6172f49e3351768 (diff) | |
| download | lwn-5ef990f06bd7e3cf521b5705d898d8e43d04ea90.tar.gz lwn-5ef990f06bd7e3cf521b5705d898d8e43d04ea90.zip | |
IB/core: remove ib_get_dma_mr
We now only use it from ib_alloc_pd to create a local DMA lkey if the
device doesn't provide one, or a global rkey if the ULP requests it.
This patch removes ib_get_dma_mr and open codes the functionality in
ib_alloc_pd so that we can simplify the code and prevent abuse of the
functionality. As a side effect we can also simplify things by removing
the valid access bit check, and the PD refcounting.
In the future I hope to also remove the per-PD global MR entirely by
shifting this work into the HW drivers, as one step towards avoiding
the struct ib_mr overload for various different use cases.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 4bdd898697cf..0a6c70895c8b 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2879,18 +2879,6 @@ static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) } /** - * ib_get_dma_mr - Returns a memory region for system memory that is - * usable for DMA. - * @pd: The protection domain associated with the memory region. - * @mr_access_flags: Specifies the memory access rights. - * - * Note that the ib_dma_*() functions defined below must be used - * to create/destroy addresses used with the Lkey or Rkey returned - * by ib_get_dma_mr(). - */ -struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags); - -/** * ib_dma_mapping_error - check a DMA addr for error * @dev: The device for which the dma_addr was created * @dma_addr: The DMA address to check |