29 Sep, 2020

2 commits

• 8caaccf52   net/smc: introduce CHID callback for ISM devices ... Browse Code »

  With SMCD version 2 the CHIDs of ISM devices are needed for the
  CLC handshake.
  This patch provides the new callback to retrieve the CHID of an
  ISM device.

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

  Ursula Braun

  2020-09-29 06:19:03 +0800  
• 201091ebb   net/smc: introduce System Enterprise ID (SEID) ... Browse Code »

  SMCD version 2 defines a System Enterprise ID (short SEID).
  This patch contains the SEID creation and adds the callback to
  retrieve the created SEID.

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

  Ursula Braun

  2020-09-29 06:19:02 +0800  

09 Jul, 2020

1 commit

• 82087c033   net/smc: switch smcd_dev_list spinlock to mutex ... Browse Code »

  The similar smc_ib_devices spinlock has been converted to a mutex.
  Protecting the smcd_dev_list by a mutex is possible as well. This
  patch converts the smcd_dev_list spinlock to a mutex.

  Fixes: c6ba7c9ba43d ("net/smc: add base infrastructure for SMC-D and ISM")
  Signed-off-by: Ursula Braun
  Signed-off-by: Karsten Graul
  Signed-off-by: David S. Miller

  Ursula Braun

  2020-07-09 03:35:15 +0800  

22 Nov, 2018

1 commit

• 0512f69e3   net/smc: add SMC-D shutdown signal ... Browse Code »

  When a SMC-D link group is freed, a shutdown signal should be sent to
  the peer to indicate that the link group is invalid. This patch adds the
  shutdown signal to the SMC code.

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

  Hans Wippel

  2018-11-22 08:14:56 +0800  

30 Jun, 2018

1 commit

• c6ba7c9ba   net/smc: add base infrastructure for SMC-D and ISM ... Browse Code »

  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

  Hans Wippel

  2018-06-30 19:42:25 +0800