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The introduction of IPPROTO_SMC enables eBPF programs to determine whether to use SMC based on the context of socket creation, such as network namespaces, PID and comm name, etc. As a subsequent enhancement, to introduce a new generic hook that allows decisions on whether to use SMC or not at runtime, including but not limited to local/remote IP address or ports. User can write their own implememtion via bpf_struct_ops now to choose whether to use SMC or not before TCP 3rd handshake to be comleted. Signed-off-by: D. Wythe <alibuda@linux.alibaba.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Dust Li <dust.li@linux.alibaba.com> Link: https://patch.msgid.link/20251107035632.115950-3-alibuda@linux.alibaba.com
31 lines
1.1 KiB
Plaintext
31 lines
1.1 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 && DIBS
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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_HS_CTRL_BPF
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bool "Generic eBPF hook for SMC handshake flow"
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depends on SMC && BPF_SYSCALL
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default y
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help
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SMC_HS_CTRL_BPF enables support to register generic eBPF hook for SMC
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handshake flow, which offer much greater flexibility in modifying the behavior
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of the SMC protocol stack compared to a complete kernel-based approach. Select
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this option if you want filtring the handshake process via eBPF programs. |