net/smc: Introduce smc_hs_ctrl #6275
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Exports three necessary symbols for implementing struct_ops with tristate subsystem. To hold or release refcnt of struct_ops refcnt by inline funcs bpf_try_module_get and bpf_module_put which use bpf_struct_ops_get(put) conditionally. And to copy obj name from one to the other with effective checks by bpf_obj_name_cpy. Signed-off-by: D. Wythe <[email protected]>
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 <[email protected]> Reviewed-by: Dust Li <[email protected]>
This tests introduces a tiny smc_hs_ctrl for filtering SMC connections based on IP pairs, and also adds a realistic topology model to verify it. Also, we can only use SMC loopback under CI test, so an additional configuration needs to be enabled. Follow the steps below to run this test. make -C tools/testing/selftests/bpf cd tools/testing/selftests/bpf sudo ./test_progs -t smc Results shows: Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: D. Wythe <[email protected]> Tested-by: Saket Kumar Bhaskar <[email protected]> Reviewed-by: Zhu Yanjun <[email protected]>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=1018781 expired. Closing PR. |
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Pull request for series with
subject: net/smc: Introduce smc_hs_ctrl
version: 4
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1018781