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authorDaniel Verkamp <daniel.verkamp@intel.com>2016-06-28 11:20:23 -0700
committerSagi Grimberg <sagi@grimberg.me>2016-08-19 12:00:44 +0300
commit7a665d2f60b457c0d77b3e4f01e21c55ffc57069 (patch)
treeb57083a9b2a3c70e96d857c9c8ad5a3b49a2448b
parenteadb7cf44105ae8250f0d638dc880c3ed511c4e2 (diff)
nvme-fabrics: change NQN UUID to big-endian format
NVM Express 1.2.1 section 7.9, NVMe Qualified Names, specifies that the UUID format of NQN uses a UUID based on RFC 4122. RFC 4122 specifies that the UUID is encoded in big-endian byte order. Switch the NVMe over Fabrics host ID field from little-endian UUID to big-endian UUID to match the specification. Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: Jay Freyensee <james_p_freyensee@linux.intel.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
-rw-r--r--drivers/nvme/host/fabrics.c10
-rw-r--r--drivers/nvme/host/fabrics.h2
-rw-r--r--include/linux/nvme.h2
3 files changed, 7 insertions, 7 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 020302c6ea57..be0b1067c9fa 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -56,7 +56,7 @@ static struct nvmf_host *nvmf_host_add(const char *hostnqn)
kref_init(&host->ref);
memcpy(host->nqn, hostnqn, NVMF_NQN_SIZE);
- uuid_le_gen(&host->id);
+ uuid_be_gen(&host->id);
list_add_tail(&host->list, &nvmf_hosts);
out_unlock:
@@ -73,9 +73,9 @@ static struct nvmf_host *nvmf_host_default(void)
return NULL;
kref_init(&host->ref);
- uuid_le_gen(&host->id);
+ uuid_be_gen(&host->id);
snprintf(host->nqn, NVMF_NQN_SIZE,
- "nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUl", &host->id);
+ "nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUb", &host->id);
mutex_lock(&nvmf_hosts_mutex);
list_add_tail(&host->list, &nvmf_hosts);
@@ -382,7 +382,7 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl)
if (!data)
return -ENOMEM;
- memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_le));
+ memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_be));
data->cntlid = cpu_to_le16(0xffff);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);
@@ -441,7 +441,7 @@ int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid)
if (!data)
return -ENOMEM;
- memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_le));
+ memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_be));
data->cntlid = cpu_to_le16(ctrl->cntlid);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index 89df52c8be97..46e460aee52d 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -34,7 +34,7 @@ struct nvmf_host {
struct kref ref;
struct list_head list;
char nqn[NVMF_NQN_SIZE];
- uuid_le id;
+ uuid_be id;
};
/**
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index d8b37bab2887..7676557ce357 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -794,7 +794,7 @@ struct nvmf_connect_command {
};
struct nvmf_connect_data {
- uuid_le hostid;
+ uuid_be hostid;
__le16 cntlid;
char resv4[238];
char subsysnqn[NVMF_NQN_FIELD_LEN];