From: Klaus Jensen <k.jen...@samsung.com>
Support returning Command Sequence Error if Set Features on Number of
Queues is called after queues have been created.
Signed-off-by: Klaus Jensen <k.jen...@samsung.com>
Reviewed-by: Maxim Levitsky <mlevi...@redhat.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomic...@wdc.com>
---
hw/block/nvme.c | 12 ++++++++++++
hw/block/nvme.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index af39126cd8d1..07d58aa945f2 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -946,6 +946,13 @@ static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeCmd *cmd)
cq = g_malloc0(sizeof(*cq));
nvme_init_cq(cq, n, prp1, cqid, vector, qsize + 1,
NVME_CQ_FLAGS_IEN(qflags));
+
+ /*
+ * It is only required to set qs_created when creating a completion queue;
+ * creating a submission queue without a matching completion queue will
+ * fail.
+ */
+ n->qs_created = true;
return NVME_SUCCESS;
}
@@ -1346,6 +1353,10 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCmd
*cmd, NvmeRequest *req)
blk_set_enable_write_cache(n->conf.blk, dw11 & 1);
break;
case NVME_NUMBER_OF_QUEUES:
+ if (n->qs_created) {
+ return NVME_CMD_SEQ_ERROR | NVME_DNR;
+ }
+
/*
* NVMe v1.3, Section 5.21.1.7: 0xffff is not an allowed value for NCQR
* and NSQR.
@@ -1478,6 +1489,7 @@ static void nvme_clear_ctrl(NvmeCtrl *n)
n->aer_queued = 0;
n->outstanding_aers = 0;
+ n->qs_created = false;
blk_flush(n->conf.blk);
n->bar.cc = 0;
diff --git a/hw/block/nvme.h b/hw/block/nvme.h
index b93067c9e4a1..0b6a8ae66559 100644
--- a/hw/block/nvme.h
+++ b/hw/block/nvme.h
@@ -95,6 +95,7 @@ typedef struct NvmeCtrl {
BlockConf conf;
NvmeParams params;
+ bool qs_created;
uint32_t page_size;
uint16_t page_bits;
uint16_t max_prp_ents;
--
2.27.0
