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[RFC,v4,09/27] nvme-fabrics: Move NVMF_ALLOWED_OPTS and NVMF_REQUIRED_OPTS definitions

Message ID 20210429190926.5086-10-smalin@marvell.com (mailing list archive)
State RFC
Headers show
Series NVMeTCP Offload ULP and QEDN Device Driver | expand

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Commit Message

Shai Malin April 29, 2021, 7:09 p.m. UTC
From: Arie Gershberg <agershberg@marvell.com>

Move NVMF_ALLOWED_OPTS and NVMF_REQUIRED_OPTS definitions
to header file, so it can be used by transport modules.

Acked-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Arie Gershberg <agershberg@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
---
 drivers/nvme/host/fabrics.c | 7 -------
 drivers/nvme/host/fabrics.h | 7 +++++++
 2 files changed, 7 insertions(+), 7 deletions(-)

Comments

Hannes Reinecke May 1, 2021, 12:19 p.m. UTC | #1
On 4/29/21 9:09 PM, Shai Malin wrote:
> From: Arie Gershberg <agershberg@marvell.com>
> 
> Move NVMF_ALLOWED_OPTS and NVMF_REQUIRED_OPTS definitions
> to header file, so it can be used by transport modules.
> 
> Acked-by: Igor Russkikh <irusskikh@marvell.com>
> Signed-off-by: Arie Gershberg <agershberg@marvell.com>
> Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
> Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
> Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
> Signed-off-by: Ariel Elior <aelior@marvell.com>
> Signed-off-by: Shai Malin <smalin@marvell.com>
> ---
>   drivers/nvme/host/fabrics.c | 7 -------
>   drivers/nvme/host/fabrics.h | 7 +++++++
>   2 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
> index 604ab0e5a2ad..55d7125c8483 100644
> --- a/drivers/nvme/host/fabrics.c
> +++ b/drivers/nvme/host/fabrics.c
> @@ -1001,13 +1001,6 @@ void nvmf_free_options(struct nvmf_ctrl_options *opts)
>   }
>   EXPORT_SYMBOL_GPL(nvmf_free_options);
>   
> -#define NVMF_REQUIRED_OPTS	(NVMF_OPT_TRANSPORT | NVMF_OPT_NQN)
> -#define NVMF_ALLOWED_OPTS	(NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \
> -				 NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \
> -				 NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\
> -				 NVMF_OPT_DISABLE_SQFLOW |\
> -				 NVMF_OPT_FAIL_FAST_TMO)
> -
>   static struct nvme_ctrl *
>   nvmf_create_ctrl(struct device *dev, const char *buf)
>   {
> diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
> index 888b108d87a4..b7627e8dcaaf 100644
> --- a/drivers/nvme/host/fabrics.h
> +++ b/drivers/nvme/host/fabrics.h
> @@ -68,6 +68,13 @@ enum {
>   	NVMF_OPT_FAIL_FAST_TMO	= 1 << 20,
>   };
>   
> +#define NVMF_REQUIRED_OPTS	(NVMF_OPT_TRANSPORT | NVMF_OPT_NQN)
> +#define NVMF_ALLOWED_OPTS	(NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \
> +				 NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \
> +				 NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\
> +				 NVMF_OPT_DISABLE_SQFLOW |\
> +				 NVMF_OPT_FAIL_FAST_TMO)
> +
>   /**
>    * struct nvmf_ctrl_options - Used to hold the options specified
>    *			      with the parsing opts enum.
> 

Why do you need them? None of the other transport drivers use them, why you?

Cheers,

Hannes
Shai Malin May 3, 2021, 3:50 p.m. UTC | #2
On 4/29/21 3:19 PM, Hannes Reinecke wrote:
> On 4/29/21 9:09 PM, Shai Malin wrote:
> > From: Arie Gershberg <agershberg@marvell.com>
> >
> > Move NVMF_ALLOWED_OPTS and NVMF_REQUIRED_OPTS definitions
> > to header file, so it can be used by transport modules.
> >
> > Acked-by: Igor Russkikh <irusskikh@marvell.com>
> > Signed-off-by: Arie Gershberg <agershberg@marvell.com>
> > Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
> > Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
> > Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
> > Signed-off-by: Ariel Elior <aelior@marvell.com>
> > Signed-off-by: Shai Malin <smalin@marvell.com>
> > ---
> >   drivers/nvme/host/fabrics.c | 7 -------
> >   drivers/nvme/host/fabrics.h | 7 +++++++
> >   2 files changed, 7 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
> > index 604ab0e5a2ad..55d7125c8483 100644
> > --- a/drivers/nvme/host/fabrics.c
> > +++ b/drivers/nvme/host/fabrics.c
> > @@ -1001,13 +1001,6 @@ void nvmf_free_options(struct nvmf_ctrl_options *opts)
> >   }
> >   EXPORT_SYMBOL_GPL(nvmf_free_options);
> >
> > -#define NVMF_REQUIRED_OPTS   (NVMF_OPT_TRANSPORT | NVMF_OPT_NQN)
> > -#define NVMF_ALLOWED_OPTS    (NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \
> > -                              NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \
> > -                              NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\
> > -                              NVMF_OPT_DISABLE_SQFLOW |\
> > -                              NVMF_OPT_FAIL_FAST_TMO)
> > -
> >   static struct nvme_ctrl *
> >   nvmf_create_ctrl(struct device *dev, const char *buf)
> >   {
> > diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
> > index 888b108d87a4..b7627e8dcaaf 100644
> > --- a/drivers/nvme/host/fabrics.h
> > +++ b/drivers/nvme/host/fabrics.h
> > @@ -68,6 +68,13 @@ enum {
> >       NVMF_OPT_FAIL_FAST_TMO  = 1 << 20,
> >   };
> >
> > +#define NVMF_REQUIRED_OPTS   (NVMF_OPT_TRANSPORT | NVMF_OPT_NQN)
> > +#define NVMF_ALLOWED_OPTS    (NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \
> > +                              NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \
> > +                              NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\
> > +                              NVMF_OPT_DISABLE_SQFLOW |\
> > +                              NVMF_OPT_FAIL_FAST_TMO)
> > +
> >   /**
> >    * struct nvmf_ctrl_options - Used to hold the options specified
> >    *                        with the parsing opts enum.
> >
>
> Why do you need them? None of the other transport drivers use them, why you?
>

Different HW devices that are offloading the NVMeTCP might have different
limitations of the allowed options.
For example, a device that does not support all the queue types.
With tcp and rdma, only the nvme-tcp and nvme-rdma layers handle those
attributes and the HW devices do not create any limitations for the allowed
options.

An alternative design could be to add separate fields in nvme_tcp_ofld_ops such
as max_hw_sectors and max_segments that we already have in this series.

Which would you prefer?

> Cheers,
>
> Hannes
> --
> Dr. Hannes Reinecke                Kernel Storage Architect
> hare@suse.de                              +49 911 74053 688
> SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
> HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
diff mbox series

Patch

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 604ab0e5a2ad..55d7125c8483 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -1001,13 +1001,6 @@  void nvmf_free_options(struct nvmf_ctrl_options *opts)
 }
 EXPORT_SYMBOL_GPL(nvmf_free_options);
 
-#define NVMF_REQUIRED_OPTS	(NVMF_OPT_TRANSPORT | NVMF_OPT_NQN)
-#define NVMF_ALLOWED_OPTS	(NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \
-				 NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \
-				 NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\
-				 NVMF_OPT_DISABLE_SQFLOW |\
-				 NVMF_OPT_FAIL_FAST_TMO)
-
 static struct nvme_ctrl *
 nvmf_create_ctrl(struct device *dev, const char *buf)
 {
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index 888b108d87a4..b7627e8dcaaf 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -68,6 +68,13 @@  enum {
 	NVMF_OPT_FAIL_FAST_TMO	= 1 << 20,
 };
 
+#define NVMF_REQUIRED_OPTS	(NVMF_OPT_TRANSPORT | NVMF_OPT_NQN)
+#define NVMF_ALLOWED_OPTS	(NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \
+				 NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \
+				 NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\
+				 NVMF_OPT_DISABLE_SQFLOW |\
+				 NVMF_OPT_FAIL_FAST_TMO)
+
 /**
  * struct nvmf_ctrl_options - Used to hold the options specified
  *			      with the parsing opts enum.