Re: [PATCH net-next 6/9] ipv4: Handle route deletion notification during flush

From: David Ahern <dsahern@gmail.com>
To: Ido Schimmel <idosch@idosch.org>, netdev@vger.kernel.org
Cc: davem@davemloft.net, jiri@mellanox.com,
	roopa@cumulusnetworks.com, mlxsw@mellanox.com,
	Ido Schimmel <idosch@mellanox.com>
Subject: Re: [PATCH net-next 6/9] ipv4: Handle route deletion notification during flush
Date: Wed, 11 Dec 2019 10:46:11 -0700	[thread overview]
Message-ID: <7ad891f6-a096-2795-2e7f-5eefc710503b@gmail.com> (raw)
In-Reply-To: <20191210172402.463397-7-idosch@idosch.org>

On 12/10/19 10:23 AM, Ido Schimmel wrote:
> From: Ido Schimmel <idosch@mellanox.com>
> 
> In a similar fashion to previous patch, when a route is deleted as part
> of table flushing, promote the next route in the list, if exists.
> Otherwise, simply emit a delete notification.

I am not following your point on a flush. If all routes are getting
deleted, why do you need to promote the next one in the list?

> 
> Signed-off-by: Ido Schimmel <idosch@mellanox.com>
> ---
>  net/ipv4/fib_trie.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
> index 2d338469d4f2..60947a44d363 100644
> --- a/net/ipv4/fib_trie.c
> +++ b/net/ipv4/fib_trie.c
> @@ -1995,6 +1995,8 @@ int fib_table_flush(struct net *net, struct fib_table *tb, bool flush_all)
>  				continue;
>  			}
>  
> +			fib_notify_alias_delete(net, n->key, &n->leaf, fa,
> +						NULL);
>  			call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_DEL,
>  						 n->key,
>  						 KEYLENGTH - fa->fa_slen, fa,
> 