kernel.git/net/smc/Makefile, branch linux-5.16.y

net/smc: Introduce tracepoint for fallback

2021-11-01T13:39:14Z

This introduces tracepoint for smc fallback to TCP, so that we can track which connection and why it fallbacks, and map the clcsocks' pointer with /proc/net/tcp to find more details about TCP connections. Compared with kprobe or other dynamic tracing, tracepoints are stable and easy to use. Signed-off-by: Tony Lu Reviewed-by: Wen Gu Signed-off-by: David S. Miller

net/smc: Add SMC statistics support

2021-06-16T19:54:02Z

Add the ability to collect SMC statistics information. Per-cpu variables are used to collect the statistic information for better performance and for reducing concurrency pitfalls. The code that is collecting statistic data is implemented in macros to increase code reuse and readability. Signed-off-by: Guvenc Gulce Signed-off-by: Karsten Graul Signed-off-by: David S. Miller

net/smc: Introduce generic netlink interface for diagnostic purposes

2020-12-02T01:56:12Z

Introduce generic netlink interface infrastructure to expose the diagnostic information regarding smc linkgroups, links and devices. Signed-off-by: Guvenc Gulce Signed-off-by: Karsten Graul Signed-off-by: Jakub Kicinski

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46Z

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

2018-06-30T11:42:25Z

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

2017-01-09T21:07:41Z

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

2017-01-09T21:07:40Z

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

2017-01-09T21:07:40Z

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)

2017-01-09T21:07:40Z

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)

2017-01-09T21:07:40Z

send and receive CDC messages (via IB message send and CQE) Signed-off-by: Ursula Braun Signed-off-by: David S. Miller