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This introduces a kind of Emulated-ISM device named loopback-ism for SMCv2.1. The loopback-ism device is currently exclusive for SMC usage, and aims to provide an SMC shortcut for sockets within the same kernel, leading to improved intra-OS traffic performance. Configuration of this feature is managed through the config SMC_LO. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com> Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com> Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
36 lines
1.0 KiB
Plaintext
36 lines
1.0 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config SMC
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tristate "SMC socket protocol family"
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depends on INET && INFINIBAND
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depends on m || ISM != m
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help
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SMC-R provides a "sockets over RDMA" solution making use of
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RDMA over Converged Ethernet (RoCE) technology to upgrade
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AF_INET TCP connections transparently.
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The Linux implementation of the SMC-R solution is designed as
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a separate socket family SMC.
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Select this option if you want to run SMC socket applications
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config SMC_DIAG
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tristate "SMC: socket monitoring interface"
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depends on SMC
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help
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Support for SMC socket monitoring interface used by tools such as
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smcss.
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if unsure, say Y.
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config SMC_LO
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bool "SMC intra-OS shortcut with loopback-ism"
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depends on SMC
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default n
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help
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SMC_LO enables the creation of an Emulated-ISM device named
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loopback-ism in SMC and makes use of it for transferring data
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when communication occurs within the same OS. This helps in
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convenient testing of SMC-D since loopback-ism is independent
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of architecture or hardware.
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if unsure, say N.
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