linux-kernel - Re: [PATCH net-next v7 08/12] net: vxlan: use kfree_skb_reason() in vxlan

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Message-ID: <ZwvAVvGFju94UmxN@shredder.mtl.com>
Date: Sun, 13 Oct 2024 15:43:02 +0300
From: Ido Schimmel <idosch@...dia.com>
To: Menglong Dong <menglong8.dong@...il.com>
Cc: kuba@...nel.org, aleksander.lobakin@...el.com, horms@...nel.org,
	davem@...emloft.net, edumazet@...gle.com, pabeni@...hat.com,
	dsahern@...nel.org, dongml2@...natelecom.cn, amcohen@...dia.com,
	gnault@...hat.com, bpoirier@...dia.com, b.galvani@...il.com,
	razor@...ckwall.org, petrm@...dia.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next v7 08/12] net: vxlan: use kfree_skb_reason() in
 vxlan_xmit()

On Wed, Oct 09, 2024 at 10:28:26AM +0800, Menglong Dong wrote:
> Replace kfree_skb() with kfree_skb_reason() in vxlan_xmit(). Following
> new skb drop reasons are introduced for vxlan:
> 
> /* no remote found for xmit */
> SKB_DROP_REASON_VXLAN_NO_REMOTE
> /* packet without necessary metadata reached a device which is
>  * in "external" mode
>  */
> SKB_DROP_REASON_TUNNEL_TXINFO
> 
> Signed-off-by: Menglong Dong <dongml2@...natelecom.cn>
> Reviewed-by: Simon Horman <horms@...nel.org>

Reviewed-by: Ido Schimmel <idosch@...dia.com>

The first reason might be useful for the bridge driver as well when
there are no ports to forward the packet to (because of egress filtering
for example), but we can make it more generic if / when the bridge
driver is annotated.