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nvmf: Track outstanding I/O for debug purposes

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Track and print out the currently outstanding I/O in debug
mode with rdma tracing enabled.

Change-Id: I0a1f0cd6e22dbf21e18ca0ec7d0c2c6d194509e3
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Ben Walker 2016-07-22 15:47:35 -07:00
parent c6a608769d
commit 3e1a251ed7
1 changed files with 12 additions and 6 deletions
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18
lib/nvmf/rdma.c
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@ -77,6 +77,7 @@ struct spdk_nvmf_rdma_conn {
uint16_t queue_depth;
STAILQ_HEAD(, spdk_nvmf_rdma_request) rdma_reqs;
int outstanding_reqs;
TAILQ_ENTRY(spdk_nvmf_rdma_conn) link;
};
@ -1090,8 +1091,11 @@ spdk_nvmf_rdma_poll(struct spdk_nvmf_conn *conn)
switch (wc.opcode) {
case IBV_WC_SEND:
SPDK_TRACELOG(SPDK_TRACE_RDMA, "RDMA SEND Complete. Request: %p Connection: %p\n",
req, conn);
assert(rdma_conn->outstanding_reqs > 0);
rdma_conn->outstanding_reqs--;
SPDK_TRACELOG(SPDK_TRACE_RDMA,
"RDMA SEND Complete. Request: %p Connection: %p Outstanding I/O: %d\n",
req, conn, rdma_conn->outstanding_reqs);
if (spdk_nvmf_rdma_request_release(conn, req)) {
return -1;
}
@ -1120,10 +1124,6 @@ spdk_nvmf_rdma_poll(struct spdk_nvmf_conn *conn)
break;
case IBV_WC_RECV:
SPDK_TRACELOG(SPDK_TRACE_RDMA, "RDMA RECV Complete. Request: %p Connection: %p\n",
req, conn);
spdk_trace_record(TRACE_NVMF_IO_START, 0, 0, (uint64_t)req, 0);
if (wc.byte_len < sizeof(struct spdk_nvmf_capsule_cmd)) {
SPDK_ERRLOG("recv length %u less than capsule header\n", wc.byte_len);
return -1;
@ -1142,6 +1142,12 @@ spdk_nvmf_rdma_poll(struct spdk_nvmf_conn *conn)
}
rdma_conn->outstanding_reqs++;
SPDK_TRACELOG(SPDK_TRACE_RDMA,
"RDMA RECV Complete. Request: %p Connection: %p Outstanding I/O: %d\n",
req, conn, rdma_conn->outstanding_reqs);
spdk_trace_record(TRACE_NVMF_IO_START, 0, 0, (uint64_t)req, 0);
memset(req->rsp, 0, sizeof(*req->rsp));
rc = spdk_nvmf_request_prep_data(req,
rdma_req->bb_mr->addr,