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rdma: Add a function to set WR parameters depending on xfer type.

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Use this function in nvmf_request_alloc_wrs and nvmf_rdma_setup_request
to eliminate code duplication

Change-Id: I771e0e899043049c90298e050d4353145e36f0d1
Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Signed-off-by: Sasha Kotchubievsky <sashakot@mellanox.com>
Signed-off-by: Evgenii Kochetov <evgeniik@mellanox.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/471034
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Alexey Marchuk 2019-10-11 08:03:01 +00:00 committed by Jim Harris
parent a335a5245a
commit 568f4d2b3a
1 changed files with 23 additions and 29 deletions
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52
lib/nvmf/rdma.c
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@ -1457,6 +1457,23 @@ spdk_nvmf_rdma_request_get_xfer(struct spdk_nvmf_rdma_request *rdma_req)
return xfer;
}
static inline void
nvmf_rdma_setup_wr(struct ibv_send_wr *wr, struct ibv_send_wr *next,
enum spdk_nvme_data_transfer xfer)
{
if (xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
wr->opcode = IBV_WR_RDMA_WRITE;
wr->send_flags = 0;
wr->next = next;
} else if (xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
wr->opcode = IBV_WR_RDMA_READ;
wr->send_flags = IBV_SEND_SIGNALED;
wr->next = NULL;
} else {
assert(0);
}
}
static int
nvmf_request_alloc_wrs(struct spdk_nvmf_rdma_transport *rtransport,
struct spdk_nvmf_rdma_request *rdma_req,
@ -1473,30 +1490,15 @@ nvmf_request_alloc_wrs(struct spdk_nvmf_rdma_transport *rtransport,
current_data_wr = &rdma_req->data;
for (i = 0; i < num_sgl_descriptors; i++) {
if (rdma_req->req.xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
current_data_wr->wr.opcode = IBV_WR_RDMA_WRITE;
current_data_wr->wr.send_flags = 0;
} else if (rdma_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
current_data_wr->wr.opcode = IBV_WR_RDMA_READ;
current_data_wr->wr.send_flags = IBV_SEND_SIGNALED;
} else {
assert(false);
}
work_requests[i]->wr.sg_list = work_requests[i]->sgl;
work_requests[i]->wr.wr_id = rdma_req->data.wr.wr_id;
nvmf_rdma_setup_wr(&current_data_wr->wr, &work_requests[i]->wr, rdma_req->req.xfer);
current_data_wr->wr.next = &work_requests[i]->wr;
current_data_wr = work_requests[i];
current_data_wr->wr.sg_list = current_data_wr->sgl;
current_data_wr->wr.wr_id = rdma_req->data.wr.wr_id;
}
if (rdma_req->req.xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
current_data_wr->wr.opcode = IBV_WR_RDMA_WRITE;
current_data_wr->wr.next = &rdma_req->rsp.wr;
current_data_wr->wr.send_flags = 0;
} else if (rdma_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
current_data_wr->wr.opcode = IBV_WR_RDMA_READ;
current_data_wr->wr.next = NULL;
current_data_wr->wr.send_flags = IBV_SEND_SIGNALED;
}
nvmf_rdma_setup_wr(&current_data_wr->wr, &rdma_req->rsp.wr, rdma_req->req.xfer);
return 0;
}
@ -1508,15 +1510,7 @@ nvmf_rdma_setup_request(struct spdk_nvmf_rdma_request *rdma_req)
wr->wr.rdma.rkey = sgl->keyed.key;
wr->wr.rdma.remote_addr = sgl->address;
if (rdma_req->req.xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
wr->opcode = IBV_WR_RDMA_WRITE;
wr->next = &rdma_req->rsp.wr;
wr->send_flags &= ~IBV_SEND_SIGNALED;
} else if (rdma_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
wr->opcode = IBV_WR_RDMA_READ;
wr->next = NULL;
wr->send_flags |= IBV_SEND_SIGNALED;
}
nvmf_rdma_setup_wr(wr, &rdma_req->rsp.wr, rdma_req->req.xfer);
}
/* This function is used in the rare case that we have a buffer split over multiple memory regions. */