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[PATCH 15/17] hw/block/nvme: enforce valid queue creation sequence
From: |
Klaus Jensen |
Subject: |
[PATCH 15/17] hw/block/nvme: enforce valid queue creation sequence |
Date: |
Mon, 29 Jun 2020 20:26:40 +0200 |
From: Klaus Jensen <k.jensen@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.jensen@samsung.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.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 8a816b558eeb..798f6f30e7da 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -911,6 +911,13 @@ 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;
}
@@ -1298,6 +1305,10 @@ 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.
@@ -1430,6 +1441,7 @@ 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 34dddda29d96..54ec54f491bf 100644
--- a/hw/block/nvme.h
+++ b/hw/block/nvme.h
@@ -124,6 +124,7 @@ 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
- [PATCH 02/17] hw/block/nvme: additional tracing, (continued)
- [PATCH 02/17] hw/block/nvme: additional tracing, Klaus Jensen, 2020/06/29
- [PATCH 01/17] hw/block/nvme: bump spec data structures to v1.3, Klaus Jensen, 2020/06/29
- [PATCH 05/17] hw/block/nvme: mark fw slot 1 as read-only, Klaus Jensen, 2020/06/29
- [PATCH 06/17] hw/block/nvme: add support for the get log page command, Klaus Jensen, 2020/06/29
- [PATCH 07/17] hw/block/nvme: add support for the asynchronous event request command, Klaus Jensen, 2020/06/29
- [PATCH 10/17] hw/block/nvme: fix missing endian conversion, Klaus Jensen, 2020/06/29
- [PATCH 08/17] hw/block/nvme: move NvmeFeatureVal into hw/block/nvme.h, Klaus Jensen, 2020/06/29
- [PATCH 09/17] hw/block/nvme: flush write cache when disabled, Klaus Jensen, 2020/06/29
- [PATCH 11/17] hw/block/nvme: add remaining mandatory controller parameters, Klaus Jensen, 2020/06/29
- [PATCH 14/17] hw/block/nvme: support identify namespace descriptor list, Klaus Jensen, 2020/06/29
- [PATCH 15/17] hw/block/nvme: enforce valid queue creation sequence,
Klaus Jensen <=
- [PATCH 16/17] hw/block/nvme: provide the mandatory subnqn field, Klaus Jensen, 2020/06/29
- [PATCH 17/17] hw/block/nvme: bump supported version to v1.3, Klaus Jensen, 2020/06/29
- [PATCH 13/17] hw/block/nvme: make sure ncqr and nsqr is valid, Klaus Jensen, 2020/06/29
- [PATCH 12/17] hw/block/nvme: support the get/set features select and save fields, Klaus Jensen, 2020/06/29