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| author | Alexei Starovoitov <ast@kernel.org> | 2021-10-21 15:11:06 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-10-21 15:11:07 -0700 |
| commit | 549beec028ad05ab911a584e9da3c51288544528 (patch) | |
| tree | 5c5883585f14f1ee79e8ea39a28d06255ceb3578 /include/uapi | |
| parent | 44ce0ac11e4e6dd1aee2e41e7d74f95f3b961cfb (diff) | |
| parent | b6c4e71516099be676ebd897ea440ce2dddca6d1 (diff) | |
Merge branch 'Add bpf_skc_to_unix_sock() helper'
Hengqi Chen says:
====================
This patch set adds a new BPF helper bpf_skc_to_unix_sock().
The helper is used in tracing programs to cast a socket
pointer to a unix_sock pointer.
v2->v3:
- Use abstract socket in selftest (Alexei)
- Run checkpatch script over patches (Andrii)
v1->v2:
- Update selftest, remove trailing spaces changes (Song)
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bpf.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 6fc59d61937a..22e7a3f38b9f 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -4909,6 +4909,12 @@ union bpf_attr { * Return * The number of bytes written to the buffer, or a negative error * in case of failure. + * + * struct unix_sock *bpf_skc_to_unix_sock(void *sk) + * Description + * Dynamically cast a *sk* pointer to a *unix_sock* pointer. + * Return + * *sk* if casting is valid, or **NULL** otherwise. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -5089,6 +5095,7 @@ union bpf_attr { FN(task_pt_regs), \ FN(get_branch_snapshot), \ FN(trace_vprintk), \ + FN(skc_to_unix_sock), \ /* */ /* integer value in 'imm' field of BPF_CALL instruction selects which helper |