bpf/selftests: add selftest for bpf_smc_ops

This tests introduces a tiny smc_ops for filtering SMC connections based on IP pairs, and also adds a realistic topology model to verify this ops. 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 <alibuda@linux.alibaba.com>
kernel-patches · Jan 17, 2025 · a3b062d · a3b062d
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diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config
@@ -113,3 +113,7 @@ CONFIG_XDP_SOCKETS=y
 CONFIG_XFRM_INTERFACE=y
 CONFIG_TCP_CONG_DCTCP=y
 CONFIG_TCP_CONG_BBR=y
+CONFIG_INFINIBAND=y
+CONFIG_SMC=y
+CONFIG_SMC_OPS=y
+CONFIG_SMC_LO=y