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Date: Sat, 14 Jun 2025 18:13:13 +0100
From: Simon Horman <horms@kernel.org>
To: Ido Schimmel <idosch@nvidia.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org,
	pabeni@redhat.com, edumazet@google.com, donald.hunter@gmail.com,
	petrm@nvidia.com, razor@blackwall.org, daniel@iogearbox.net
Subject: Re: [PATCH net-next 1/2] neighbor: Add NTF_EXT_VALIDATED flag for
 externally validated entries
Message-ID: <20250614171313.GB861417@horms.kernel.org>
References: <20250611141551.462569-1-idosch@nvidia.com>
 <20250611141551.462569-2-idosch@nvidia.com>
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In-Reply-To: <20250611141551.462569-2-idosch@nvidia.com>

On Wed, Jun 11, 2025 at 05:15:50PM +0300, Ido Schimmel wrote:

...

> diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h
> index b851c36ad25d..27bedfcce537 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 neigbor entries were externally validated by a

nit: neighbor or neighbour

> + * 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 {

...