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. This patch set enables the Fabric and the storage targets to identify, monitor, and handle FC traffic based on VMID . It added a new knob app_identifier in blkio controller and also provides a mechanism for inserting UUID info. It also provides a mechanism for inserting application specific identification into the FC frame. The HBA driver(lpfc) retrieves the UUID when the first IO is initiated and registers it with the Fabric. The Fabric assigns an VMID which is unique within the fabric. The resulting VMID is stored against the UUID/per-port. The VMID is inserted in all the subsequent FC frames that are originating from the UUID, and egressing the specific port through which the fabric is connected. HBA maintains mapping of fabric associated IDs (VMID) to compute associated IDs (UUID). The HBA changes currently supports only for scsi. For VM this patch currently supports for virtio device(device type:Disk Device and BUS type :VIRTIO) Tests done: We have tested this patch by attaching the device to a KVM as a virtio device and added UUID to blkio cgroup as shown below. echo "UUID" > /sys/fs/cgroup/blkio/machine.slice/machine-qemu\\x2d<ID>\\ x2d<VMNAME>.scope/blkio.app_identifier Then from the guest we run couple of io tests and checked the VMID are passed to the fabric to identify,monitor the fc frames. The patches were cut against 5.9/scsi-queue tree 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 (1): blkcg:Introduce blkio.app_identifier knob to blkio controller block/blk-cgroup.c | 32 +++ drivers/scsi/lpfc/lpfc.h | 122 +++++++++++ drivers/scsi/lpfc/lpfc_attr.c | 47 ++++ drivers/scsi/lpfc/lpfc_crtn.h | 11 + drivers/scsi/lpfc/lpfc_ct.c | 256 +++++++++++++++++++++- 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 | 323 ++++++++++++++++++++++++++++ drivers/scsi/lpfc/lpfc_sli.c | 65 +++++- drivers/scsi/lpfc/lpfc_sli.h | 8 + include/linux/blk-cgroup.h | 19 ++ 16 files changed, 1618 insertions(+), 23 deletions(-) -- 2.18.2
