[RFC v2 00/18] blkcg:Support to track FC storage blk io traffic

[Muneendra]

This Patch added a unique application identifier i.e
app_id  knob to  blkcg which allows identification of traffic
sources at an individual cgroup based Applications
(ex:virtual machine (VM))level in both host and
fabric infrastructure.

Added a new sysfs attribute appid_store to set the application identfier
in  the blkcg associted with cgroup id
/sys/class/fc/fc_udev_device/* 
With this new interface the user can set the application identfier
in  the blkcg associted with cgroup id.

This capability can be utilized by multiple block transport infrastructure
like fc,iscsi,roce.

Existing FC fabric will use this feature and the description of
the use case is below.

Various virtualization technologies used in Fibre Channel
SAN deployments have created the opportunity to identify
and associate traffic with specific virtualized applications.
The concepts behind the T11 Application Services standard is
to provide the general mechanisms needed to identify
virtualized services.
It enables the Fabric and the storage targets to
identify, monitor, and handle FC traffic
based on vm tags by inserting application specific identification
into the FC frame.

The patches were cut against  5.10/scsi-queue tree

V2:
renamed app_identifier to app_id.
removed the  sysfs interface blkio.app_identifie under
/sys/fs/cgroup/blkio
Ported the patch on top of 5.10/scsi-queue.
Removed redundant code due to changes since last submit.
Added a fix for issuing QFPA command.

Gaurav Srivastava (15):
  lpfc: vmid: Add the datastructure for supporting VMID in lpfc
  lpfc: vmid: API to check if VMID is enabled.
  lpfc: vmid: Supplementary data structures for vmid
  lpfc: vmid: Forward declarations for APIs
  lpfc: vmid: Add support for vmid in mailbox command
  lpfc: vmid: VMID params initialization
  lpfc: vmid: vmid resource allocation
  lpfc: vmid: cleanup vmid resources
  lpfc: vmid: Implements ELS commands for appid patch
  lpfc: vmid: Functions to manage vmids
  lpfc: vmid: Implements CT commands for appid.
  lpfc: vmid: Appends the vmid in the wqe before sending request
  lpfc: vmid: Timeout implementation for vmid
  lpfc: vmid: Adding qfpa and vmid timeout check in worker thread
  lpfc: vmid: Introducing vmid in io path.

Muneendra (3):
  cgroup: Added cgroup_get_from_kernfs_id
  blkcg: Added a app identifier support for blkcg
  nvme: Added a newsysfs attribute appid_store

 block/blk-cgroup.c               |  31 +++
 drivers/nvme/host/fc.c           |  73 ++++++-
 drivers/scsi/lpfc/lpfc.h         | 121 +++++++++++
 drivers/scsi/lpfc/lpfc_attr.c    |  47 ++++
 drivers/scsi/lpfc/lpfc_crtn.h    |  11 +
 drivers/scsi/lpfc/lpfc_ct.c      | 249 +++++++++++++++++++++
 drivers/scsi/lpfc/lpfc_disc.h    |   1 +
 drivers/scsi/lpfc/lpfc_els.c     | 356 ++++++++++++++++++++++++++++++-
 drivers/scsi/lpfc/lpfc_hbadisc.c | 151 +++++++++++++
 drivers/scsi/lpfc/lpfc_hw.h      | 124 ++++++++++-
 drivers/scsi/lpfc/lpfc_hw4.h     |  12 ++
 drivers/scsi/lpfc/lpfc_init.c    | 108 ++++++++++
 drivers/scsi/lpfc/lpfc_mbox.c    |   6 +
 drivers/scsi/lpfc/lpfc_scsi.c    | 325 ++++++++++++++++++++++++++++
 drivers/scsi/lpfc/lpfc_sli.c     |  65 +++++-
 drivers/scsi/lpfc/lpfc_sli.h     |   8 +
 include/linux/blk-cgroup.h       |  22 ++
 include/linux/cgroup.h           |   6 +
 kernel/cgroup/cgroup.c           |  25 +++
 19 files changed, 1728 insertions(+), 13 deletions(-)

-- 
2.26.2

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