Il 22/05/2014 04:26, Nicholas A. Bellinger ha scritto:
From: Nicholas Bellinger <n...@linux-iscsi.org>Hi MST, MKP, Paolo & Co, Here is the v2 patch series for adding T1O protection information (PI) SGL passthrough support between virtio-scsi LLD + vhost-scsi fabric endpoints. Following MST's recommendation, it includes the changes for using bytes intead of number of iovecs in virtio_scsi_cmd_req_pi along with the associated changes to virtio-scsi + vhost/scsi code. For vhost/scsi, this includes walking the leading iovec's length(s) to determine where protection payload ends, and real data payload starts. For virtio-scsi LLD code, this includes locating struct blk_integrity for using blk_rq_sectors + ->tuple_size to calculate the total bytes for outgoing cmd_pi->pi_bytes[out,in] values. The full list of changes from last series include: - Use pi_bytesout + pi_bytesin instead of niovs in virtio-scsi PI header (mst + paolo) - Add prot_pto=1 in tcm_vhost_submission_work() when no PI buffer exists (nab) - Get rid of req + cdb pointer casts in vhost_scsi_handle_vq (mst) - Ensure that virtio_scsi_cmd_req_pi processing happens regardless of data_num in vhost_scsi_handle_vq (nab) - Pass TARGET_PROT_ALL into transport_init_session_tags() (nab) - Convert vhost_scsi_handle_vq to use memcpy_fromiovecend() (mst) - Convert vhost_scsi_handle_vq to use pi_bytesout + pi_bytesin (nab) - Convert virtio_scsi_init_hdr_pi() to use pi_bytesout + pi_bytesin (mst + paolo + nab) - Use blk_integrity->tuple_size to calculate pi bytes (nab) Please review for v3.16-rc1 code. Thanks! --nab Nicholas Bellinger (6): virtio-scsi.h: Add virtio_scsi_cmd_req_pi + VIRTIO_SCSI_F_T10_PI bits vhost/scsi: Move sanity check into vhost_scsi_map_iov_to_sgl vhost/scsi: Add preallocation of protection SGLs vhost/scsi: Add T10 PI IOV -> SGL memory mapping logic vhost/scsi: Enable T10 PI IOV -> SGL memory mapping virtio-scsi: Enable DIF/DIX modes in SCSI host LLD drivers/scsi/virtio_scsi.c | 86 +++++++++--- drivers/vhost/scsi.c | 305 +++++++++++++++++++++++++++++-------------- include/linux/virtio_scsi.h | 15 ++- 3 files changed, 292 insertions(+), 114 deletions(-)
Looks good, thanks! Paolo -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
