Hey Nic, MKP, SCSI and RDMA folks, This patchset adds basic support for T10-DIF protection information offload in iSER target on top of Nic's recent work and RDMA signature verbs API.
This code was tested with my own implementation of the target core T10-PI support which was designed mainly to activate the transport DIF offload. In order to actually get Linux SCSI target to work with iSER T10-DIF offload a couple of patches needs to be added to Nic's work which is ongoing. Apart from doing the actual iser implementation for T10-DIF offload, this series would help to see the full picture by: * Showing how the T10-DIF offload verbs are used * Showing how fabric transport offload plugs into the target core The T10-DIF signature offload verbs and mlx5 driver implementation patches are available from the for-next branch of git://beany.openfabrics.org/~ogerlitz/linux-2.6.git as the below commits: 2b4316b IB/mlx5: Publish support in signature feature ef3130d IB/mlx5: Collect signature error completion c1b37b1 IB/mlx5: Support IB_WR_REG_SIG_MR f5d8496 IB/mlx5: Keep mlx5 MRs in a radix tree under device 72a72ee IB/mlx5: remove MTT access mode from umr flags helper function ccb0a907 IB/mlx5: Break wqe handling to begin & finish routines cda0569 IB/mlx5: Initialize mlx5_ib_qp signature related 33b4079 IB/mlx5, mlx5_core: Support for create_mr and destroy_mr 8b343e6 IB/core: Introduce Signature Verbs API c1b0358 IB/core: Introduce protected memory regions Sagi Grimberg (11): Target/core: Fixes for isert compilation IB/isert: seperate connection protection domains and dma MRs IB/isert: Avoid frwr notation, user fastreg IB/isert: Move fastreg descriptor creation to a function Target/iscsi: Add T10-PI indication for iscsi_portal_group IB/isert: Initialize T10-PI resources IB/isert: pass scatterlist instead of cmd to fast_reg_mr routine IB/isert: pass mr and frpl to isert_fast_reg_mr routine IB/isert: Accept RDMA_WRITE completions IB/isert: Support T10-PI protected transactions Target/configfs: Expose iSCSI network portal group T10-PI support drivers/infiniband/ulp/isert/ib_isert.c | 708 +++++++++++++++++++------ drivers/infiniband/ulp/isert/ib_isert.h | 29 +- drivers/target/iscsi/iscsi_target_configfs.c | 6 + drivers/target/iscsi/iscsi_target_core.h | 5 +- drivers/target/iscsi/iscsi_target_tpg.c | 21 + drivers/target/iscsi/iscsi_target_tpg.h | 1 + include/target/target_core_base.h | 22 +- 7 files changed, 603 insertions(+), 189 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
