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| author | Martin KaFai Lau <kafai@fb.com> | 2020-10-01 18:34:54 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-10-02 11:34:48 -0700 |
| commit | 96d46c508506136ed35c4b02d74ce38e91d88421 (patch) | |
| tree | 2dc8b38a12a4ce910cfcaf187b32b45565d358a6 /tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c | |
| parent | 82f45c6c4a70622cc0585e3f4372e192a6491d26 (diff) | |
| download | linux-96d46c508506136ed35c4b02d74ce38e91d88421.tar.gz linux-96d46c508506136ed35c4b02d74ce38e91d88421.tar.bz2 linux-96d46c508506136ed35c4b02d74ce38e91d88421.zip | |
bpf: selftest: Ensure the child sk inherited all bpf_sock_ops_cb_flags
This patch adds a test to ensure the child sk inherited everything
from the bpf_sock_ops_cb_flags of the listen sk:
1. Sets one more cb_flags (BPF_SOCK_OPS_STATE_CB_FLAG) to the listen sk
in test_tcp_hdr_options.c
2. Saves the skops->bpf_sock_ops_cb_flags when handling the newly
established passive connection
3. CHECK() it is the same as the listen sk
This also covers the fastopen case as the existing test_tcp_hdr_options.c
does.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201002013454.2542367-1-kafai@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c b/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c index 9197a23df3da..678bd0fad29e 100644 --- a/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c +++ b/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c @@ -21,6 +21,7 @@ __u8 test_kind = TCPOPT_EXP; __u16 test_magic = 0xeB9F; +__u32 inherit_cb_flags = 0; struct bpf_test_option passive_synack_out = {}; struct bpf_test_option passive_fin_out = {}; @@ -467,6 +468,8 @@ static int handle_passive_estab(struct bpf_sock_ops *skops) struct tcphdr *th; int err; + inherit_cb_flags = skops->bpf_sock_ops_cb_flags; + err = load_option(skops, &passive_estab_in, true); if (err == -ENOENT) { /* saved_syn is not found. It was in syncookie mode. @@ -600,10 +603,10 @@ int estab(struct bpf_sock_ops *skops) case BPF_SOCK_OPS_TCP_LISTEN_CB: bpf_setsockopt(skops, SOL_TCP, TCP_SAVE_SYN, &true_val, sizeof(true_val)); - set_hdr_cb_flags(skops); + set_hdr_cb_flags(skops, BPF_SOCK_OPS_STATE_CB_FLAG); break; case BPF_SOCK_OPS_TCP_CONNECT_CB: - set_hdr_cb_flags(skops); + set_hdr_cb_flags(skops, 0); break; case BPF_SOCK_OPS_PARSE_HDR_OPT_CB: return handle_parse_hdr(skops); |