tools/bpf: sync bpf uapi header bpf.h to tools directory

The bpf uapi header include/uapi/linux/bpf.h is sync'ed
to tools/include/uapi/linux/bpf.h.

Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 63e0cf66f01a9698ff6bc41ac5492809bb83d834..68d4470523a0393158c593c76cf38795d5acc4fe 100644 (file)
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -2672,6 +2672,20 @@ union bpf_attr {
  *             0 on success.
  *
  *             **-ENOENT** if the bpf-local-storage cannot be found.
+ *
+ * int bpf_send_signal(u32 sig)
+ *     Description
+ *             Send signal *sig* to the current task.
+ *     Return
+ *             0 on success or successfully queued.
+ *
+ *             **-EBUSY** if work queue under nmi is full.
+ *
+ *             **-EINVAL** if *sig* is invalid.
+ *
+ *             **-EPERM** if no permission to send the *sig*.
+ *
+ *             **-EAGAIN** if bpf program can try again.
  */
 #define __BPF_FUNC_MAPPER(FN)          \
        FN(unspec),                     \
@@ -2782,7 +2796,8 @@ union bpf_attr {
        FN(strtol),                     \
        FN(strtoul),                    \
        FN(sk_storage_get),             \
-       FN(sk_storage_delete),
+       FN(sk_storage_delete),          \
+       FN(send_signal),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call