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authorKlaus Jensen <k.jensen@samsung.com>2022-04-29 10:33:32 +0200
committerKlaus Jensen <k.jensen@samsung.com>2022-06-03 21:48:24 +0200
commita859eb9f8f64e116671048a43a07d87bc6527a55 (patch)
treec9418bf0eb09c343f86b0bd8bc7c7c37fae77c1f
parent9235a72a5df0fae1ede89f02717b597ef91cf6ad (diff)
downloadfocaccia-qemu-a859eb9f8f64e116671048a43a07d87bc6527a55.tar.gz
focaccia-qemu-a859eb9f8f64e116671048a43a07d87bc6527a55.zip
hw/nvme: enforce common serial per subsystem
The Identify Controller Serial Number (SN) is the serial number for the
NVM subsystem and must be the same across all controller in the NVM
subsystem.

Enforce this.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
-rw-r--r--hw/nvme/nvme.h1
-rw-r--r--hw/nvme/subsys.c7
2 files changed, 8 insertions, 0 deletions
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 6773819325..e41771604f 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -48,6 +48,7 @@ typedef struct NvmeSubsystem {
     DeviceState parent_obj;
     NvmeBus     bus;
     uint8_t     subnqn[256];
+    char        *serial;
 
     NvmeCtrl      *ctrls[NVME_MAX_CONTROLLERS];
     NvmeNamespace *namespaces[NVME_MAX_NAMESPACES + 1];
diff --git a/hw/nvme/subsys.c b/hw/nvme/subsys.c
index fb58d63950..691a90d209 100644
--- a/hw/nvme/subsys.c
+++ b/hw/nvme/subsys.c
@@ -27,6 +27,13 @@ int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
         return -1;
     }
 
+    if (!subsys->serial) {
+        subsys->serial = g_strdup(n->params.serial);
+    } else if (strcmp(subsys->serial, n->params.serial)) {
+        error_setg(errp, "invalid controller serial");
+        return -1;
+    }
+
     subsys->ctrls[cntlid] = n;
 
     for (nsid = 1; nsid < ARRAY_SIZE(subsys->namespaces); nsid++) {