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authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-27 21:17:28 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-27 21:17:28 +0300
commitd76886972823ce456c0c61cd2284e85668e2131e (patch)
tree2171359a7aeb2539c327f6d2604b1ad3aa21f588 /Documentation
parent0e45384cecccaa950783e67e7a29ed470133f19d (diff)
parentf295e4cece5cb4c60715fed539abcd62468f9ef1 (diff)
downloadlinux-d76886972823ce456c0c61cd2284e85668e2131e.tar.xz
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe: "Again another fairly quiet cycle with few notable core code changes and the usual variety of driver bug fixes and small improvements. - Various driver updates and bug fixes for siw, bnxt_re, hns, qedr, iw_cxgb4, vmw_pvrdma, mlx5 - Improvements in SRPT from working with iWarp - SRIOV VF support for bnxt_re - Skeleton kernel-doc files for drivers/infiniband - User visible counters for events related to ODP - Common code for tracking of mmap lifetimes so that drivers can link HW object liftime to a VMA - ODP bug fixes and rework - RDMA READ support for efa - Removal of the very old cxgb3 driver" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (168 commits) RDMA/hns: Delete unnecessary callback functions for cq RDMA/hns: Rename the functions used inside creating cq RDMA/hns: Redefine the member of hns_roce_cq struct RDMA/hns: Redefine interfaces used in creating cq RDMA/efa: Expose RDMA read related attributes RDMA/efa: Support remote read access in MR registration RDMA/efa: Store network attributes in device attributes IB/hfi1: remove redundant assignment to variable ret RDMA/bnxt_re: Fix missing le16_to_cpu RDMA/bnxt_re: Fix stat push into dma buffer on gen p5 devices RDMA/bnxt_re: Fix chip number validation Broadcom's Gen P5 series RDMA/bnxt_re: Fix Kconfig indentation IB/mlx5: Implement callbacks for getting VFs GUID attributes IB/ipoib: Add ndo operation for getting VFs GUID attributes IB/core: Add interfaces to get VF node and port GUIDs net/core: Add support for getting VF GUIDs RDMA/qedr: Fix null-pointer dereference when calling rdma_user_mmap_get_offset RDMA/cm: Use refcount_t type for refcount variable IB/mlx5: Support extended number of strides for Striding RQ IB/mlx4: Update HW GID table while adding vlan GID ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/stable/sysfs-class-infiniband19
-rw-r--r--Documentation/ABI/stable/sysfs-driver-ib_srp2
-rw-r--r--Documentation/DMA-attributes.txt18
-rw-r--r--Documentation/driver-api/index.rst1
-rw-r--r--Documentation/driver-api/infiniband.rst127
5 files changed, 130 insertions, 37 deletions
diff --git a/Documentation/ABI/stable/sysfs-class-infiniband b/Documentation/ABI/stable/sysfs-class-infiniband
index aed21b8916a2..96dfe1926b76 100644
--- a/Documentation/ABI/stable/sysfs-class-infiniband
+++ b/Documentation/ABI/stable/sysfs-class-infiniband
@@ -314,25 +314,6 @@ Description:
board_id: (RO) Manufacturing board ID
-sysfs interface for Chelsio T3 RDMA Driver (cxgb3)
---------------------------------------------------
-
-What: /sys/class/infiniband/cxgb3_X/hw_rev
-What: /sys/class/infiniband/cxgb3_X/hca_type
-What: /sys/class/infiniband/cxgb3_X/board_id
-Date: Feb, 2007
-KernelVersion: v2.6.21
-Contact: linux-rdma@vger.kernel.org
-Description:
- hw_rev: (RO) Hardware revision number
-
- hca_type: (RO) HCA type. Here it is a driver short name.
- It should normally match the name in its bus
- driver structure (e.g. pci_driver::name).
-
- board_id: (RO) Manufacturing board id
-
-
sysfs interface for Mellanox ConnectX HCA IB driver (mlx4)
----------------------------------------------------------
diff --git a/Documentation/ABI/stable/sysfs-driver-ib_srp b/Documentation/ABI/stable/sysfs-driver-ib_srp
index 7049a2b50359..84972a57caae 100644
--- a/Documentation/ABI/stable/sysfs-driver-ib_srp
+++ b/Documentation/ABI/stable/sysfs-driver-ib_srp
@@ -67,6 +67,8 @@ Description: Interface for making ib_srp connect to a new target.
initiator is allowed to queue per SCSI host. The default
value for this parameter is 62. The lowest supported value
is 2.
+ * max_it_iu_size, a decimal number specifying the maximum
+ initiator to target information unit length.
What: /sys/class/infiniband_srp/srp-<hca>-<port_number>/ibdev
Date: January 2, 2006
diff --git a/Documentation/DMA-attributes.txt b/Documentation/DMA-attributes.txt
index 8f8d97f65d73..29dcbe8826e8 100644
--- a/Documentation/DMA-attributes.txt
+++ b/Documentation/DMA-attributes.txt
@@ -5,24 +5,6 @@ DMA attributes
This document describes the semantics of the DMA attributes that are
defined in linux/dma-mapping.h.
-DMA_ATTR_WRITE_BARRIER
-----------------------
-
-DMA_ATTR_WRITE_BARRIER is a (write) barrier attribute for DMA. DMA
-to a memory region with the DMA_ATTR_WRITE_BARRIER attribute forces
-all pending DMA writes to complete, and thus provides a mechanism to
-strictly order DMA from a device across all intervening busses and
-bridges. This barrier is not specific to a particular type of
-interconnect, it applies to the system as a whole, and so its
-implementation must account for the idiosyncrasies of the system all
-the way from the DMA device to memory.
-
-As an example of a situation where DMA_ATTR_WRITE_BARRIER would be
-useful, suppose that a device does a DMA write to indicate that data is
-ready and available in memory. The DMA of the "completion indication"
-could race with data DMA. Mapping the memory used for completion
-indications with DMA_ATTR_WRITE_BARRIER would prevent the race.
-
DMA_ATTR_WEAK_ORDERING
----------------------
diff --git a/Documentation/driver-api/index.rst b/Documentation/driver-api/index.rst
index 38e638abe3eb..d0efa35052e3 100644
--- a/Documentation/driver-api/index.rst
+++ b/Documentation/driver-api/index.rst
@@ -26,6 +26,7 @@ available subsections can be seen below.
device_link
component
message-based
+ infiniband
sound
frame-buffer
regulator
diff --git a/Documentation/driver-api/infiniband.rst b/Documentation/driver-api/infiniband.rst
new file mode 100644
index 000000000000..1a3116f32ff0
--- /dev/null
+++ b/Documentation/driver-api/infiniband.rst
@@ -0,0 +1,127 @@
+===========================================
+InfiniBand and Remote DMA (RDMA) Interfaces
+===========================================
+
+Introduction and Overview
+=========================
+
+TBD
+
+InfiniBand core interfaces
+==========================
+
+.. kernel-doc:: drivers/infiniband/core/iwpm_util.h
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/core/cq.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/cm.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/rw.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/device.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/verbs.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/packer.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/sa_query.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/ud_header.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/fmr_pool.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/umem.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/core/umem_odp.c
+ :export:
+
+RDMA Verbs transport library
+============================
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/mr.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/rc.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/ah.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/vt.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/cq.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/qp.c
+ :export:
+
+.. kernel-doc:: drivers/infiniband/sw/rdmavt/mcast.c
+ :export:
+
+Upper Layer Protocols
+=====================
+
+iSCSI Extensions for RDMA (iSER)
+--------------------------------
+
+.. kernel-doc:: drivers/infiniband/ulp/iser/iscsi_iser.h
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/ulp/iser/iscsi_iser.c
+ :functions: iscsi_iser_pdu_alloc iser_initialize_task_headers \
+ iscsi_iser_task_init iscsi_iser_mtask_xmit iscsi_iser_task_xmit \
+ iscsi_iser_cleanup_task iscsi_iser_check_protection \
+ iscsi_iser_conn_create iscsi_iser_conn_bind \
+ iscsi_iser_conn_start iscsi_iser_conn_stop \
+ iscsi_iser_session_destroy iscsi_iser_session_create \
+ iscsi_iser_set_param iscsi_iser_ep_connect iscsi_iser_ep_poll \
+ iscsi_iser_ep_disconnect
+
+.. kernel-doc:: drivers/infiniband/ulp/iser/iser_initiator.c
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/ulp/iser/iser_verbs.c
+ :internal:
+
+Omni-Path (OPA) Virtual NIC support
+-----------------------------------
+
+.. kernel-doc:: drivers/infiniband/ulp/opa_vnic/opa_vnic_internal.h
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/ulp/opa_vnic/opa_vnic_encap.h
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/ulp/opa_vnic/opa_vnic_vema_iface.c
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c
+ :internal:
+
+InfiniBand SCSI RDMA protocol target support
+--------------------------------------------
+
+.. kernel-doc:: drivers/infiniband/ulp/srpt/ib_srpt.h
+ :internal:
+
+.. kernel-doc:: drivers/infiniband/ulp/srpt/ib_srpt.c
+ :internal:
+
+iSCSI Extensions for RDMA (iSER) target support
+-----------------------------------------------
+
+.. kernel-doc:: drivers/infiniband/ulp/isert/ib_isert.c
+ :internal:
+