netdev - Re: [PATCH 3/4] doc: networking: document arp_evict

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Date:   Thu, 14 Oct 2021 12:34:59 -0600
From:   David Ahern <dsahern@...il.com>
To:     James Prestwood <prestwoj@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 3/4] doc: networking: document arp_evict_nocarrier

On 10/13/21 4:27 PM, James Prestwood wrote:
> Signed-off-by: James Prestwood <prestwoj@...il.com>
> ---
>  Documentation/networking/ip-sysctl.rst | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
> index c2ecc9894fd0..174d9d3ee5c2 100644
> --- a/Documentation/networking/ip-sysctl.rst
> +++ b/Documentation/networking/ip-sysctl.rst
> @@ -1565,6 +1565,15 @@ arp_accept - BOOLEAN
>  	gratuitous arp frame, the arp table will be updated regardless
>  	if this setting is on or off.
>  
> +arp_evict_nocarrier - BOOLEAN
> +	Clears the ARP cache on NOCARRIER events. This option is important for
> +	wireless devices where the ARP cache should not be cleared when roaming
> +	between access points on the same network. In most cases this should
> +	remain as the default (1).
> +
> +	- 1 - (default): Clear the ARP cache on NOCARRIER events
> +	- 0 - Do not clear ARP cache on NOCARRIER events
> +
>  mcast_solicit - INTEGER
>  	The maximum number of multicast probes in INCOMPLETE state,
>  	when the associated hardware address is unknown.  Defaults
> 

documentation can be added to the patch that adds the new sysctl