linux-kernel - Re: [PATCH net-next 07/10] net: vxlan: use vxlan_kfree_skb() in vxlan

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Message-ID: <ZsSL_QJfZqp6zqtc@shredder.mtl.com>
Date: Tue, 20 Aug 2024 15:28:45 +0300
From: Ido Schimmel <idosch@...dia.com>
To: Menglong Dong <menglong8.dong@...il.com>
Cc: kuba@...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 07/10] net: vxlan: use vxlan_kfree_skb() in
 vxlan_xmit()

On Thu, Aug 15, 2024 at 08:42:59PM +0800, Menglong Dong wrote:
> diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
> index 9a61f04bb95d..22e2bf532ac3 100644
> --- a/drivers/net/vxlan/vxlan_core.c
> +++ b/drivers/net/vxlan/vxlan_core.c
> @@ -2729,7 +2729,7 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
>  			if (info && info->mode & IP_TUNNEL_INFO_TX)
>  				vxlan_xmit_one(skb, dev, vni, NULL, false);
>  			else
> -				kfree_skb(skb);
> +				vxlan_kfree_skb(skb, VXLAN_DROP_TXINFO);

This one probably belongs in include/net/dropreason-core.h as there are
other devices that support tunnel info with similar checks.

>  			return NETDEV_TX_OK;
>  		}
>  	}
> @@ -2792,7 +2792,7 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
>  			dev_core_stats_tx_dropped_inc(dev);
>  			vxlan_vnifilter_count(vxlan, vni, NULL,
>  					      VXLAN_VNI_STATS_TX_DROPS, 0);
> -			kfree_skb(skb);
> +			vxlan_kfree_skb(skb, VXLAN_DROP_REMOTE);
>  			return NETDEV_TX_OK;
>  		}
>  	}
> @@ -2815,7 +2815,7 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
>  		if (fdst)
>  			vxlan_xmit_one(skb, dev, vni, fdst, did_rsc);
>  		else
> -			kfree_skb(skb);
> +			vxlan_kfree_skb(skb, VXLAN_DROP_REMOTE);

Maybe VXLAN_DROP_NO_REMOTE? Please add it to vxlan_mdb_xmit() as well

>  	}
>  
>  	return NETDEV_TX_OK;
> -- 
> 2.39.2
>