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The test cases for destroying sockets mirror the intended usages of the bpf_sock_destroy kfunc using iterators. The destroy helpers set `ECONNABORTED` error code that we can validate in the test code with client sockets. But UDP sockets have an overriding error code from `disconnect()` called during abort, so the error code validation is only done for TCP sockets. The failure test cases validate that the `bpf_sock_destroy` kfunc is not allowed from program attach types other than BPF trace iterator, and such programs fail to load. Signed-off-by: Aditi Ghag <aditi.ghag@isovalent.com> Link: https://lore.kernel.org/r/20230519225157.760788-10-aditi.ghag@isovalent.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>