linux-kernel - Re: [PATCH] flow_dissector: Fix vlan header offset in __skb_flow

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Message-Id: <20190622.161955.2030310177158651781.davem@davemloft.net>
Date:   Sat, 22 Jun 2019 16:19:55 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     yuehaibing@...wei.com
Cc:     sdf@...gle.com, jianbol@...lanox.com, jiri@...lanox.com,
        mirq-linux@...e.qmqm.pl, willemb@...gle.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] flow_dissector: Fix vlan header offset in
 __skb_flow_dissect

From: YueHaibing <yuehaibing@...wei.com>
Date: Thu, 20 Jun 2019 00:01:32 +0800

> @@ -785,6 +785,9 @@ bool __skb_flow_dissect(const struct sk_buff *skb,
>  		    skb && skb_vlan_tag_present(skb)) {
>  			proto = skb->protocol;
>  		} else {
> +			if (dissector_vlan == FLOW_DISSECTOR_KEY_MAX)
> +				nhoff -=  sizeof(*vlan);

Even if this would have turned out to be the desired fix, you would need
to get rid of the extra spaces in that last statement.