Hello Sagi, Christoph, Keith, Martin, James and Co
This patchset adds metadata (T10-PI) support for NVMeoF/RDMA host side
and target side, using signature verbs API. This set starts with a few
preparation commits to the NVMe host core layer. It continues with
NVMeoF/RDMA host implementation + few preparation commits to the RDMA/rw
API and to NVMe target core layer. The patchset ends with NVMeoF/RDMA
target implementation. Also patch for NVMe-cli added to this series.
In V5 I mainly did some renamings and removed 2 patches to get_mdts that
were already merged to main branch. I tried get some inspiration from
James suggestion of the settings in NVMe core, but unfortunately couldn't
take much from there and I stayed with Christoph suggestion for features
flag per namespace. I found the code more readable in this form and
hopefully we can continue with the review and the merge soon.
Configuration:
Host:
- nvme connect --pi_enable --transport=rdma --traddr=10.0.1.1 --nqn=test-nvme
Target:
- echo 1 > /config/nvmet/subsystems/${NAME}/attr_pi_enable
- echo 1 > /config/nvmet/ports/${PORT_NUM}/param_pi_enable
The code was tested using Mellanox's ConnectX-4/ConnectX-5 HCAs.
This series applies on top of nvme_5.7 branch cleanly.
Changes from v4:
- removed get_mdts patches (merged)
- added enum nvme_ns_features instead of defines (patch 1/17)
- rename pi/prot to md (patches 2/17 + 6/17 + 8/17 + 9/17 + 10/17)
- another rebase
Changes from v3:
- Added Reviewed-by signatures
- New RDMA/rw patch (Patch 17/19)
- Add mdts setting op for controllers (Patches 14/19, 18/19)
- Rename NVME_NS_DIX_SUPPORTED to NVME_NS_MD_HOST_SUPPORTED and
NVME_NS_DIF_SUPPORTED to NVME_NS_MD_CTRL_SUPPORTED (Patch 01/19)
- Split "nvme: Introduce namespace features flag" patch (patch 02/19)
- Rename nvmet_rdma_set_diff_domain to nvmet_rdma_set_sig_domain
and nvme_rdma_set_diff_domain to nvme_rdma_set_sig_domain
(Patches 08/19, 19/19)
- Remove ns parameter from nvme_rdma_set_sig_domain/nvmet_rdma_set_sig_domain
functions (patch 08/19, 19/19)
- Rebase over nvme-5.7 branch
Changes from v2:
- Convert the virtual start sector (which passed to bip_set_seed function)
to be in integrity interval units (Patch 14/15)
- Clarify some commit messages
Changes from v1:
- Added Reviewed-by signatures
- Added namespace features flag (Patch 01/15)
- Remove nvme_ns_has_pi function (Patch 01/15)
- Added has_pi field to struct nvme_request (Patch 01/15)
- Subject change for patch 02/15
- Fix comment for PCI metadata (Patch 03/15)
- Rebase over "nvme: Avoid preallocating big SGL for data" patchset
- Introduce NVME_INLINE_PROT_SG_CNT flag (Patch 05/15)
- Introduce nvme_rdma_sgl structure (Patch 06/15)
- Remove first_sgl pointer from struct nvme_rdma_request (Patch 06/15)
- Split nvme-rdma patches (Patches 06/15, 07/15)
- Rename is_protected to use_pi (Patch 07/15)
- Refactor nvme_rdma_get_max_fr_pages function (Patch 07/15)
- Added ifdef CONFIG_BLK_DEV_INTEGRITY (Patches 07/15, 09/15, 13/15,
14/15, 15/15)
- Added port configfs pi_enable (Patch 14/15)
Israel Rukshin (12):
nvme: introduce namespace features flag
nvme: Add has_md field to the nvme_req structure
nvme-fabrics: Allow user enabling metadata/T10-PI support
nvme: introduce NVME_INLINE_MD_SG_CNT
nvme-rdma: Introduce nvme_rdma_sgl structure
nvmet: prepare metadata request
nvmet: add metadata characteristics for a namespace
nvmet: Rename nvmet_rw_len to nvmet_rw_data_len
nvmet: Rename nvmet_check_data_len to nvmet_check_transfer_len
nvme: Add Metadata Capabilities enumerations
nvmet: Add metadata/T10-PI support
nvmet: Add metadata support for block devices
Max Gurtovoy (5):
nvme: Enforce extended LBA format for fabrics metadata
nvme: introduce max_integrity_segments ctrl attribute
nvme-rdma: add metadata/T10-PI support
RDMA/rw: Expose maximal page list for a device per 1 MR
nvmet-rdma: Add metadata/T10-PI support
drivers/infiniband/core/rw.c | 14 +-
drivers/nvme/host/core.c | 79 +++++---
drivers/nvme/host/fabrics.c | 11 ++
drivers/nvme/host/fabrics.h | 3 +
drivers/nvme/host/nvme.h | 12 +-
drivers/nvme/host/pci.c | 7 +
drivers/nvme/host/rdma.c | 367 +++++++++++++++++++++++++++++++++-----
drivers/nvme/target/admin-cmd.c | 33 +++-
drivers/nvme/target/configfs.c | 61 +++++++
drivers/nvme/target/core.c | 54 ++++--
drivers/nvme/target/discovery.c | 8 +-
drivers/nvme/target/fabrics-cmd.c | 19 +-
drivers/nvme/target/io-cmd-bdev.c | 113 +++++++++++-
drivers/nvme/target/io-cmd-file.c | 6 +-
drivers/nvme/target/nvmet.h | 38 +++-
drivers/nvme/target/rdma.c | 245 +++++++++++++++++++++++--
include/linux/nvme.h | 2 +
include/rdma/rw.h | 1 +
18 files changed, 946 insertions(+), 127 deletions(-)
--
1.8.3.1
