Commit e1b514ce authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

nvme/rdma: cache value of bb_mr->rkey 



Avoid an extra level of pointer chasing when we are filling out the NVMe
SGL.

Change-Id: I1a40af16fda80f7480c419524876bfb1a1902eb8
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent 6152d5bf

lib/nvme/nvme_rdma.c

+6 −1
Original line number Diff line number Diff line
@@ -123,6 +123,9 @@ struct spdk_nvme_rdma_req { 


	struct ibv_mr				*bb_mr;



	/* Cached value of bb_mr->rkey */

	uint32_t				bb_rkey;



	uint8_t					*bb;



	STAILQ_ENTRY(spdk_nvme_rdma_req)	link;
@@ -258,7 +261,7 @@ nvme_rdma_pre_copy_mem(struct nvme_rdma_qpair *rqpair, struct spdk_nvme_rdma_req 


		nvme_sgl = &cmd->dptr.sgl1;

		nvme_sgl->address = (uint64_t)rdma_req->bb;

		nvme_sgl->keyed.key = rdma_req->bb_mr->rkey;

		nvme_sgl->keyed.key = rdma_req->bb_rkey;

	}

}
@@ -467,6 +470,8 @@ nvme_rdma_alloc_reqs(struct nvme_rdma_qpair *rqpair) 
			goto fail;

		}



		rdma_req->bb_rkey = rdma_req->bb_mr->rkey;



		STAILQ_INSERT_TAIL(&rqpair->free_reqs, rdma_req, link);

	}