linux-toradex.git/net/smc/Makefile, branch v5.3.2

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

net/smc: add base infrastructure for SMC-D and ISM

2018-06-30T11:42:25+00:00

SMC supports two variants: SMC-R and SMC-D. For data transport, SMC-R
uses RDMA devices, SMC-D uses so-called Internal Shared Memory (ISM)
devices. An ISM device only allows shared memory communication between
SMC instances on the same machine. For example, this allows virtual
machines on the same host to communicate via SMC without RDMA devices.

This patch adds the base infrastructure for SMC-D and ISM devices to
the existing SMC code. It contains the following:

* ISM driver interface:
  This interface allows an ISM driver to register ISM devices in SMC. In
  the process, the driver provides a set of device ops for each device.
  SMC uses these ops to execute SMC specific operations on or transfer
  data over the device.

* Core SMC-D link group, connection, and buffer support:
  Link groups, SMC connections and SMC buffers (in smc_core) are
  extended to support SMC-D.

* SMC type checks:
  Some type checks are added to prevent using SMC-R specific code for
  SMC-D and vice versa.

To actually use SMC-D, additional changes to pnetid, CLC, CDC, etc. are
required. These are added in follow-up patches.

Signed-off-by: Hans Wippel 
Signed-off-by: Ursula Braun 
Suggested-by: Thomas Richter 
Signed-off-by: David S. Miller

smc: netlink interface for SMC sockets

2017-01-09T21:07:41+00:00

Support for SMC socket monitoring via netlink sockets of protocol
NETLINK_SOCK_DIAG.

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: socket closing and linkgroup cleanup

2017-01-09T21:07:40+00:00

smc_shutdown() and smc_release() handling
delayed linkgroup cleanup for linkgroups without connections

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: receive data from RMBE

2017-01-09T21:07:40+00:00

move RMBE data into user space buffer and update managing cursors

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: send data (through RDMA)

2017-01-09T21:07:40+00:00

copy data to kernel send buffer, and trigger RDMA write

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: connection data control (CDC)

2017-01-09T21:07:40+00:00

send and receive CDC messages (via IB message send and CQE)

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: link layer control (LLC)

2017-01-09T21:07:40+00:00

send and receive LLC messages CONFIRM_LINK (via IB message send and CQE)

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: work request (WR) base for use by LLC and CDC

2017-01-09T21:07:39+00:00

The base containers for RDMA transport are work requests and completion
queue entries processed through Infiniband verbs:
* allocate and initialize these areas
* map these areas to DMA
* implement the basic communication consisting of work request posting
  and receival of completion queue events

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

smc: connection and link group creation

2017-01-09T21:07:39+00:00

* create smc_connection for SMC-sockets
* determine suitable link group for a connection
* create a new link group if necessary

Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller