linux-toradex.git/include/uapi/scsi, branch v5.19-rc4

scsi: mpi3mr: Add support for NVMe passthrough

2022-05-02T21:02:42+00:00

Add support for management applications to send an MPI3 Encapsulated NVMe
passthru command to the NVMe devices attached to an Avenger controller.
Since the NVMe drives are exposed as SCSI devices by the controller, the
standard NVMe applications cannot be used to interact with the drives and
the command sets supported are also limited by the controller firmware.
Special handling is required for MPI3 Encapsulated NVMe passthru commands
for PRP/SGL setup in the commands.

Link: https://lore.kernel.org/r/20220429211641.642010-8-sumit.saxena@broadcom.com
Reviewed-by: Himanshu Madhani 
Signed-off-by: Sumit Saxena 
Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Move data structures/definitions from MPI headers to uapi header

2022-05-02T21:02:41+00:00

This patch moves the data structures/definitions which are used by
userspace applications from MPI headers to uapi/scsi/scsi_bsg_mpi3mr.h

Link: https://lore.kernel.org/r/20220429211641.642010-4-sumit.saxena@broadcom.com
Reported by: Stephen Rothwell 
Reviewed-by: Himanshu Madhani 
Signed-off-by: Sumit Saxena 
Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Add support for driver commands

2022-05-02T21:02:41+00:00

There are certain bsg commands which need to be completed by the driver
without involving firmware. These requests are termed driver commands. Add
support for these.

Link: https://lore.kernel.org/r/20220429211641.642010-3-sumit.saxena@broadcom.com
Reported by: Stephen Rothwell 
Reported-by: kernel test robot 
Reviewed-by: Himanshu Madhani 
Signed-off-by: Sumit Saxena 
Signed-off-by: Martin K. Petersen

scsi: fc: Add EDC ELS definition

2021-08-25T02:56:33+00:00

Add Exchange Diagnostic Capabilities (EDC) ELS definition and the following
capability descriptors:

 - Link Fault Capability Descriptor

 - Congestion Signaling Capability Descriptor

Definitions taken from FC-LS-5 r5.01

Link: https://lore.kernel.org/r/20210816162901.121235-2-jsmart2021@gmail.com
Signed-off-by: James Smart 
Signed-off-by: Martin K. Petersen

scsi: fc: Update formal FPIN descriptor definitions

2020-10-26T22:06:45+00:00

Add Fabric Performance Impact Notification (FPIN) descriptor definitions
for the following FPINs:

 - Delivery Notification Descriptor

 - Peer Congestion Notification Descriptor

 - Congestion Notification Descriptor

Link: https://lore.kernel.org/r/20201021092715.22669-2-njavali@marvell.com
Reviewed-by: James Smart 
Reviewed-by: Himanshu Madhani 
Signed-off-by: Shyam Sundar 
Signed-off-by: Nilesh Javali 
Signed-off-by: Martin K. Petersen

scsi: qla2xxx: Change in PUREX to handle FPIN ELS requests

2020-07-02T02:24:16+00:00

SAN Congestion Management generates ELS pkts whose size can vary and be >
64 bytes. Change the PUREX handling code to support non-standard ELS pkt
size.

Link: https://lore.kernel.org/r/20200630102229.29660-2-njavali@marvell.com
Reviewed-by: Himanshu Madhani 
Signed-off-by: Shyam Sundar 
Signed-off-by: Arun Easi 
Signed-off-by: Nilesh Javali 
Signed-off-by: Martin K. Petersen

uapi: revert flexible-array conversions

2020-05-04T16:30:15+00:00

These structures can get embedded in other structures in user-space
and cause all sorts of warnings and problems. So, we better don't take
any chances and keep the zero-length arrays in place for now.

Signed-off-by: Gustavo A. R. Silva

scsi: Replace zero-length array with flexible-array member

2020-03-12T03:07:56+00:00

The current codebase makes use of the zero-length array language extension
to the C90 standard, but the preferred mechanism to declare variable-length
types such as these ones is a flexible array member[1][2], introduced in
C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning in
case the flexible array does not occur last in the structure, which will
help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by this
change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")

Link: https://lore.kernel.org/r/20200224161406.GA21454@embeddedor
Reviewed-by: Lee Duncan 
Reviewed-by: Satish Kharat 
Signed-off-by: Gustavo A. R. Silva 
Signed-off-by: Martin K. Petersen

scsi: fc: Update Descriptor definition and add RDF and Link Integrity FPINs

2020-02-18T05:07:57+00:00

Update the FC headers for the RDF ELS and populate out the FPIN ELS and the
Link integrity FPIN payload.

RDF is used to register for diagnostic events.
FPIN is how the fabric reports a diagnostic event.

Specifically, this patch:

 - Adds the formal definition of TLV descriptors that are now used in a lot
   of the FC spec. The simplistic fc_fn_desc structure, basically no more
   than the tlv definition, is removed.

 - Small tlv helper functions are added as defines.

 - The list of known Descriptor tags (identifying the TLV) is expanded and
   a name initializer introduced.

 - The LSRI descriptor, returned in many new ELS response payloads is
   added.

 - The RDF ELS code is added, and the RDF request response structures
   added.

 - The FPIN els definition is corrected.

 - A full definition of a Link Integrity Notification descriptor is added,

[mkp: rolled in kbuild warning fix]

Link: https://lore.kernel.org/r/20200210173155.547-2-jsmart2021@gmail.com
Reported-by: kbuild test robot 
Signed-off-by: James Smart 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Martin K. Petersen

scsi: ufs: delete unused structure filed tr

2019-12-20T03:08:53+00:00

Delete unused structure field tr in structure utp_upiu_req, since no person
uses it for task management.

Fixes: df032bf27a41 ("scsi: ufs: Add a bsg endpoint that supports UPIUs")
Link: https://lore.kernel.org/r/20191205220912.5696-1-huobean@gmail.com
Reviewed-by: Avri Altman 
Signed-off-by: Bean Huo 
Signed-off-by: Martin K. Petersen