kernel.git/tools/testing/selftests/bpf/test_sock_fields.c, branch linux-5.7.y

selftests: bpf: enable hi32 randomization for all tests

2019-05-25T01:58:37Z

The previous libbpf patch allows user to specify "prog_flags" to bpf program load APIs. To enable high 32-bit randomization for a test, we need to set BPF_F_TEST_RND_HI32 in "prog_flags". To enable such randomization for all tests, we need to make sure all places are passing BPF_F_TEST_RND_HI32. Changing them one by one is not convenient, also, it would be better if a test could be switched to "normal" running mode without code change. Given the program load APIs used across bpf selftests are mostly: bpf_prog_load: load from file bpf_load_program: load from raw insns A test_stub.c is implemented for bpf seltests, it offers two functions for testing purpose: bpf_prog_test_load bpf_test_load_program The are the same as "bpf_prog_load" and "bpf_load_program", except they also set BPF_F_TEST_RND_HI32. Given *_xattr functions are the APIs to customize any "prog_flags", it makes little sense to put these two functions into libbpf. Then, the following CFLAGS are passed to compilations for host programs: -Dbpf_prog_load=bpf_prog_test_load -Dbpf_load_program=bpf_test_load_program They migrate the used load APIs to the test version, hence enable high 32-bit randomization for these tests without changing source code. Besides all these, there are several testcases are using "bpf_prog_load_attr" directly, their call sites are updated to pass BPF_F_TEST_RND_HI32. Signed-off-by: Jiong Wang Signed-off-by: Alexei Starovoitov

bpf: Add ene-to-end test for bpf_sk_storage_* helpers

2019-04-27T16:07:05Z

This patch rides on an existing BPF_PROG_TYPE_CGROUP_SKB test (test_sock_fields.c) to do a TCP end-to-end test on the new bpf_sk_storage_* helpers. Signed-off-by: Martin KaFai Lau Signed-off-by: Alexei Starovoitov

bpf: Add an example for bpf_get_listener_sock

2019-03-13T19:04:35Z

This patch adds an example in using the new helper bpf_get_listener_sock(). Signed-off-by: Martin KaFai Lau Signed-off-by: Alexei Starovoitov

selftests/bpf: set unlimited RLIMIT_MEMLOCK for test_sock_fields

2019-03-02T00:06:23Z

This is to avoid permission denied error. A lot of systems may have a much lower number, e.g., 64KB, for RLIMIT_MEMLOCK, which may not be sufficient for the test to run successfully. Fixes: e0b27b3f97b8 ("bpf: Add test_sock_fields for skb->sk and bpf_tcp_sock") Signed-off-by: Yonghong Song Acked-by: Song Liu Signed-off-by: Daniel Borkmann

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