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

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Message-ID: <20190410203631.1576576-3-javierhonduco@fb.com>
Date:   Wed, 10 Apr 2019 13:36:30 -0700
From:   Javier Honduvilla Coto <javierhonduco@...com>
To:     <netdev@...r.kernel.org>
CC:     <yhs@...com>, <kernel-team@...com>
Subject: [PATCH v5 bpf-next 2/3] bpf: sync kernel uapi headers

Sync kernel uapi headers.

Signed-off-by: Javier Honduvilla Coto <javierhonduco@...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