diff options
| author | Menglong Dong <menglong8.dong@gmail.com> | 2026-01-24 14:19:56 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-01-24 18:49:35 -0800 |
| commit | 2d419c44658f75e7655794341a95c0687830f3df (patch) | |
| tree | 0b4ee620358c66e239a874ac9e08f339f69ab88a /net | |
| parent | c7900f225a102219f5fe2c1c93a7dec5467315ee (diff) | |
| download | linux-next-2d419c44658f75e7655794341a95c0687830f3df.tar.gz linux-next-2d419c44658f75e7655794341a95c0687830f3df.zip | |
bpf: add fsession support
The fsession is something that similar to kprobe session. It allow to
attach a single BPF program to both the entry and the exit of the target
functions.
Introduce the struct bpf_fsession_link, which allows to add the link to
both the fentry and fexit progs_hlist of the trampoline.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Co-developed-by: Leon Hwang <leon.hwang@linux.dev>
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20260124062008.8657-2-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bpf/test_run.c | 1 | ||||
| -rw-r--r-- | net/core/bpf_sk_storage.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 26cfcfdc45eb..178c4738e63b 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -685,6 +685,7 @@ int bpf_prog_test_run_tracing(struct bpf_prog *prog, switch (prog->expected_attach_type) { case BPF_TRACE_FENTRY: case BPF_TRACE_FEXIT: + case BPF_TRACE_FSESSION: if (bpf_fentry_test1(1) != 2 || bpf_fentry_test2(2, 3) != 5 || bpf_fentry_test3(4, 5, 6) != 15 || diff --git a/net/core/bpf_sk_storage.c b/net/core/bpf_sk_storage.c index 850dd736ccd1..de111818f3a0 100644 --- a/net/core/bpf_sk_storage.c +++ b/net/core/bpf_sk_storage.c @@ -365,6 +365,7 @@ static bool bpf_sk_storage_tracing_allowed(const struct bpf_prog *prog) return true; case BPF_TRACE_FENTRY: case BPF_TRACE_FEXIT: + case BPF_TRACE_FSESSION: return !!strncmp(prog->aux->attach_func_name, "bpf_sk_storage", strlen("bpf_sk_storage")); default: |