kernel/tools/testing/selftests/bpf/Makefile, branch linux-5.1.y

selftests: bpf: fix compilation with out-of-tree $(OUTPUT)

2019-03-07T09:44:32Z

A bunch of related changes lumped together: * Create prog_tests and verifier output directories; these don't exist with out-of-tree $(OUTPUT) * Add missing -I (via separate TEST_{PROGS,VERIFIER}_CFLAGS) for the main tree ($(PWD) != $(OUTPUT) for out-of-tree) * Add libbpf.a dependency for test_progs_32 (parallel make fails otherwise) * Add missing "; \" after "cd" when generating test.h headers Tested by: $ alias m="make -s -j$(nproc)" $ m -C tools/testing/selftests/bpf/ clean $ m -C tools/lib/bpf/ clean $ rm -rf xxx; mkdir xxx; m -C tools/testing/selftests/bpf/ OUTPUT=$PWD/xxx $ m -C tools/testing/selftests/bpf/ Fixes: 3f30658830f3 ("selftests: bpf: break up test_progs - preparations") Fixes: 2dfb40121ee8 ("selftests: bpf: prepare for break up of verifier tests") Fixes: 3ef84346c561 ("selftests: bpf: makefile support sub-register code-gen test mode") Signed-off-by: Stanislav Fomichev Acked-by: Yonghong Song Signed-off-by: Daniel Borkmann

selftests: bpf: break up test_progs - preparations

2019-03-02T19:10:40Z

Add new prog_tests directory where tests are supposed to land. Each prog_tests/.c is expected to have a global function with signature 'void test_(void)'. Makefile automatically generates prog_tests/tests.h file with entry for each prog_tests file: #ifdef DECLARE extern void test_(void); ... #endif #ifdef CALL test_(); ... #endif prog_tests/tests.h is included in test_progs.c in two places with appropriate defines. This scheme allows us to move each function with a separate patch without breaking anything. Compared to the recent verifier split, each separate file here is a compilation unit and test_progs.[ch] is now used as a place to put some common routines that might be used by multiple tests. Signed-off-by: Stanislav Fomichev Signed-off-by: Alexei Starovoitov

selftests: bpf: add test_lwt_ip_encap selftest

2019-02-14T02:27:55Z

This patch adds a bpf self-test to cover BPF_LWT_ENCAP_IP mode in bpf_lwt_push_encap. Covered: - encapping in LWT_IN and LWT_XMIT - IPv4 and IPv6 A follow-up patch will add GSO and VRF-enabled tests. Signed-off-by: Peter Oskolkov Signed-off-by: Alexei Starovoitov

selftests: bpf: relax sub-register mode compilation criteria

2019-02-12T04:31:38Z

Sub-register mode compilation was enabled only when there are eBPF "v3" processor supports at both compilation time inside LLVM and runtime inside kernel. Given separation betwen build and test server could be often, this patch removes the runtime support criteria. Suggested-by: Alexei Starovoitov Signed-off-by: Jiong Wang Signed-off-by: Alexei Starovoitov

selftests: bpf: centre kernel bpf objects under new subdir "progs"

2019-02-12T04:31:38Z

At the moment, all kernel bpf objects are listed under BPF_OBJ_FILES. Listing them manually sometimes causing patch conflict when people are adding new testcases simultaneously. It is better to centre all the related source files under a subdir "progs", then auto-generate the object file list. Suggested-by: Alexei Starovoitov Reviewed-by: Jakub Kicinski Signed-off-by: Jiong Wang Signed-off-by: Alexei Starovoitov

selftests: bpf: extend sub-register mode compilation to all bpf object files

2019-02-12T04:31:38Z

At the moment, we only do extra sub-register mode compilation on bpf object files used by "test_progs". These object files are really loaded and executed. This patch further extends sub-register mode compilation to all bpf object files, even those without corresponding runtime tests. Because this could help testing LLVM sub-register code-gen, kernel bpf selftest has much more C testcases with reasonable size and complexity compared with LLVM testsuite which only contains unit tests. There were some file duplication inside BPF_OBJ_FILES_DUAL_COMPILE which is removed now. Reviewed-by: Jakub Kicinski Signed-off-by: Jiong Wang Signed-off-by: Alexei Starovoitov

bpf: Add test_sock_fields for skb->sk and bpf_tcp_sock

2019-02-11T03:46:17Z

This patch adds a C program to show the usage on skb->sk and bpf_tcp_sock. Acked-by: Alexei Starovoitov Signed-off-by: Martin KaFai Lau Signed-off-by: Alexei Starovoitov

selftests/bpf: remove generated verifier/tests.h on 'make clean'

2019-02-01T23:52:53Z

'make clean' is supposed to remove generated files. Signed-off-by: Stanislav Fomichev Acked-by: Jakub Kicinski Signed-off-by: Alexei Starovoitov

selftests/bpf: test for BPF_F_LOCK

2019-02-01T19:55:39Z

Add C based test that runs 4 bpf programs in parallel that update the same hash and array maps. And another 2 threads that read from these two maps via lookup(key, value, BPF_F_LOCK) api to make sure the user space sees consistent value in both hash and array elements while user space races with kernel bpf progs. Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

selftests/bpf: add bpf_spin_lock C test

2019-02-01T19:55:39Z

add bpf_spin_lock C based test that requires latest llvm with BTF support Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann