[PATCH v5 bpf-next 2/3] bpf: sync kernel uapi headers

[Javier Honduvilla Coto]

Sync kernel uapi headers.

Signed-off-by: Javier Honduvilla Coto <javierhond...@fb.com>
---
 tools/include/uapi/linux/bpf.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index af1cbd951f26..f707b286c21d 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -2493,6 +2493,13 @@ union bpf_attr {
  *     Return
  *             0 if iph and th are a valid SYN cookie ACK, or a negative error
  *             otherwise.
+ * int bpf_descendant_of(pid_t pid)
+ *     Description
+ *             This helper is useful in programs that want to filter events
+ *             happening to a pid or to any of its descendants.
+ *     Return
+ *             1 if the passed pid is an ancestor of the currently executing
+ *             process' pid or equal to it.
  */
 #define __BPF_FUNC_MAPPER(FN)          \
        FN(unspec),                     \
@@ -2595,7 +2602,8 @@ union bpf_attr {
        FN(skb_ecn_set_ce),             \
        FN(get_listener_sock),          \
        FN(skc_lookup_tcp),             \
-       FN(tcp_check_syncookie),
+       FN(tcp_check_syncookie),        \
+       FN(descendant_of),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call
-- 
2.17.1