From: daniel.verkamp@intel.com (Daniel Verkamp)
Subject: [PATCH] nvme-fabrics: change NQN UUID to big-endian format
Date: Tue, 28 Jun 2016 11:20:23 -0700 [thread overview]
Message-ID: <1467138023-41671-1-git-send-email-daniel.verkamp@intel.com> (raw)
In-Reply-To: <20160628084547.GA31465@infradead.org>
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 at intel.com>
---
drivers/nvme/host/fabrics.c | 10 +++++-----
drivers/nvme/host/fabrics.h | 2 +-
include/linux/nvme.h | 2 +-
3 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index b86b637..918310c 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);
@@ -371,7 +371,7 @@ 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);
@@ -430,7 +430,7 @@ 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 b540674..9d31466 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 d8b37ba..7676557 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];
--
2.7.4
next prev parent reply other threads:[~2016-06-28 18:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-24 18:22 NVMe over Fabrics: NQN UUID byte order Verkamp, Daniel
2016-06-28 8:45 ` Christoph Hellwig
2016-06-28 18:20 ` Daniel Verkamp [this message]
2016-06-28 19:55 ` [PATCH] nvme-fabrics: change NQN UUID to big-endian format Freyensee, James P
2016-06-30 6:41 ` Christoph Hellwig
2016-08-18 19:48 ` Verkamp, Daniel
2016-08-19 9:02 ` Sagi Grimberg
2016-07-13 10:12 ` Sagi Grimberg
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