ivampiresp/Spdk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nvmf/rdma: Move all SGL setup to the prep_data step

Browse Source 
This keeps all SGL handling in the prep_data function.

Change-Id: I9bfeed3748c1b329288350b85aa87bd604cfce4e
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Ben Walker 2017-03-15 13:13:32 -07:00 committed by Daniel Verkamp
parent e0bdfb14ee
commit a4a3b5e7fd
1 changed files with 11 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
lib/nvmf/rdma.c
View File

@ -420,20 +420,6 @@ spdk_nvmf_rdma_conn_create(struct rdma_cm_id *id, struct ibv_comp_channel *chann
return rdma_conn;
}
static inline void
nvmf_ibv_send_wr_set_rkey(struct ibv_send_wr *wr, struct spdk_nvmf_request *req)
{
struct spdk_nvme_sgl_descriptor *sgl = &req->cmd->nvme_cmd.dptr.sgl1;
assert(sgl->generic.type == SPDK_NVME_SGL_TYPE_KEYED_DATA_BLOCK);
wr->wr.rdma.rkey = sgl->keyed.key;
wr->wr.rdma.remote_addr = sgl->address;
SPDK_TRACELOG(SPDK_TRACE_RDMA, "rkey %x remote_addr %p\n",
wr->wr.rdma.rkey, (void *)wr->wr.rdma.remote_addr);
}
static int
nvmf_post_rdma_read(struct spdk_nvmf_request *req)
{
@ -441,24 +427,12 @@ nvmf_post_rdma_read(struct spdk_nvmf_request *req)
struct spdk_nvmf_conn *conn = req->conn;
struct spdk_nvmf_rdma_request *rdma_req = get_rdma_req(req);
struct spdk_nvmf_rdma_conn *rdma_conn = get_rdma_conn(conn);
struct spdk_nvmf_rdma_session *rdma_sess;
int rc;
SPDK_TRACELOG(SPDK_TRACE_RDMA, "RDMA READ POSTED. Request: %p Connection: %p\n", req, conn);
rdma_req->data.sgl[0].addr = (uintptr_t)req->data;
if (rdma_req->data_from_pool) {
rdma_sess = get_rdma_sess(conn->sess);
rdma_req->data.sgl[0].lkey = rdma_sess->buf_mr->lkey;
} else {
rdma_req->data.sgl[0].lkey = rdma_conn->bufs_mr->lkey;
}
rdma_req->data.sgl[0].length = req->length;
rdma_req->data.wr.opcode = IBV_WR_RDMA_READ;
nvmf_ibv_send_wr_set_rkey(&rdma_req->data.wr, req);
spdk_trace_record(TRACE_RDMA_READ_START, 0, 0, (uintptr_t)req, 0);
rc = ibv_post_send(rdma_conn->cm_id->qp, &rdma_req->data.wr, &bad_wr);
if (rc) {
@ -475,24 +449,12 @@ nvmf_post_rdma_write(struct spdk_nvmf_request *req)
struct spdk_nvmf_conn *conn = req->conn;
struct spdk_nvmf_rdma_request *rdma_req = get_rdma_req(req);
struct spdk_nvmf_rdma_conn *rdma_conn = get_rdma_conn(conn);
struct spdk_nvmf_rdma_session *rdma_sess;
int rc;
SPDK_TRACELOG(SPDK_TRACE_RDMA, "RDMA WRITE POSTED. Request: %p Connection: %p\n", req, conn);
rdma_req->data.sgl[0].addr = (uintptr_t)req->data;
if (rdma_req->data_from_pool) {
rdma_sess = get_rdma_sess(conn->sess);
rdma_req->data.sgl[0].lkey = rdma_sess->buf_mr->lkey;
} else {
rdma_req->data.sgl[0].lkey = rdma_conn->bufs_mr->lkey;
}
rdma_req->data.sgl[0].length = req->length;
rdma_req->data.wr.opcode = IBV_WR_RDMA_WRITE;
nvmf_ibv_send_wr_set_rkey(&rdma_req->data.wr, req);
spdk_trace_record(TRACE_RDMA_WRITE_START, 0, 0, (uintptr_t)req, 0);
rc = ibv_post_send(rdma_conn->cm_id->qp, &rdma_req->data.wr, &bad_wr);
if (rc) {
@ -863,6 +825,9 @@ spdk_nvmf_request_prep_data(struct spdk_nvmf_request *req)
}
req->length = sgl->keyed.length;
rdma_req->data.sgl[0].length = sgl->keyed.length;
rdma_req->data.wr.wr.rdma.rkey = sgl->keyed.key;
rdma_req->data.wr.wr.rdma.remote_addr = sgl->address;
rdma_sess = get_rdma_sess(req->conn->sess);
if (!rdma_sess) {
@ -876,19 +841,26 @@ spdk_nvmf_request_prep_data(struct spdk_nvmf_request *req)
/* Use the in capsule data buffer, even though this isn't in capsule data. */
SPDK_TRACELOG(SPDK_TRACE_RDMA, "Request using in capsule buffer for non-capsule data\n");
req->data = rdma_req->recv->buf;
rdma_req->data.sgl[0].lkey = get_rdma_conn(req->conn)->bufs_mr->lkey;
rdma_req->data_from_pool = false;
} else {
req->data = SLIST_FIRST(&rdma_sess->data_buf_pool);
rdma_req->data.sgl[0].lkey = rdma_sess->buf_mr->lkey;
rdma_req->data_from_pool = true;
if (!req->data) {
/* No available buffers. Queue this request up. */
SPDK_TRACELOG(SPDK_TRACE_RDMA, "No available large data buffers. Queueing request %p\n", req);
/* This will get assigned when we actually obtain a buffer */
rdma_req->data.sgl[0].addr = (uintptr_t)NULL;
return SPDK_NVMF_REQUEST_PREP_PENDING_BUFFER;
}
SPDK_TRACELOG(SPDK_TRACE_RDMA, "Request %p took buffer from central pool\n", req);
SLIST_REMOVE_HEAD(&rdma_sess->data_buf_pool, link);
}
rdma_req->data.sgl[0].addr = (uintptr_t)req->data;
if (req->xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
return SPDK_NVMF_REQUEST_PREP_PENDING_DATA;
} else {
@ -953,6 +925,7 @@ spdk_nvmf_rdma_handle_pending_rdma_rw(struct spdk_nvmf_conn *conn)
break;
}
SLIST_REMOVE_HEAD(&rdma_sess->data_buf_pool, link);
rdma_req->data.sgl[0].addr = (uintptr_t)rdma_req->req.data;
TAILQ_REMOVE(&rdma_conn->pending_data_buf_queue, rdma_req, link);
if (rdma_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
TAILQ_INSERT_TAIL(&rdma_conn->pending_rdma_rw_queue, rdma_req, link);