netdev - [PATCH iproute2-next 1/2] Sync uAPI headers

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Message-ID: <20250701144216.823867-2-idosch@nvidia.com>
Date: Tue, 1 Jul 2025 17:42:15 +0300
From: Ido Schimmel <idosch@...dia.com>
To: <netdev@...r.kernel.org>
CC: <dsahern@...il.com>, <stephen@...workplumber.org>, <petrm@...dia.com>,
	"Ido Schimmel" <idosch@...dia.com>
Subject: [PATCH iproute2-next 1/2] Sync uAPI headers

Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 include/uapi/linux/neighbour.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h
index 5e67a7eaf4a7..1401f5730a00 100644
--- a/include/uapi/linux/neighbour.h
+++ b/include/uapi/linux/neighbour.h
@@ -54,6 +54,7 @@ enum {
 /* Extended flags under NDA_FLAGS_EXT: */
 #define NTF_EXT_MANAGED		(1 << 0)
 #define NTF_EXT_LOCKED		(1 << 1)
+#define NTF_EXT_EXT_VALIDATED	(1 << 2)
 
 /*
  *	Neighbor Cache Entry States.
@@ -92,6 +93,10 @@ enum {
  * bridge in response to a host trying to communicate via a locked bridge port
  * with MAB enabled. Their purpose is to notify user space that a host requires
  * authentication.
+ *
+ * NTF_EXT_EXT_VALIDATED flagged neighbor entries were externally validated by
+ * a user space control plane. The kernel will not remove or invalidate them,
+ * but it can probe them and notify user space when they become reachable.
  */
 
 struct nda_cacheinfo {
-- 
2.50.0