netdev - Re: [PATCH v2 3/3] net: tun: track dropped skb via kfree_skb

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Message-ID: <29ff2768-ca3f-6a09-1df8-d703f85ecfac@gmail.com>
Date:   Sat, 19 Feb 2022 15:54:41 -0700
From:   David Ahern <dsahern@...il.com>
To:     Dongli Zhang <dongli.zhang@...cle.com>, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        rostedt@...dmis.org, mingo@...hat.com, ast@...nel.org,
        daniel@...earbox.net, andrii@...nel.org, imagedong@...cent.com,
        joao.m.martins@...cle.com, joe.jin@...cle.com, edumazet@...gle.com
Subject: Re: [PATCH v2 3/3] net: tun: track dropped skb via kfree_skb_reason()

On 2/19/22 12:12 PM, Dongli Zhang wrote:
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index aa27268edc5f..ab47a66deb7f 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -1062,13 +1062,16 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
>  	struct netdev_queue *queue;
>  	struct tun_file *tfile;
>  	int len = skb->len;
> +	int drop_reason;

enum skb_drop_reason