netdev - Re: [PATCH v3 net-next] net:sched: add action inheritdsfield to skbedit

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Message-ID: <20180609225136.GE31423@localhost.localdomain>
Date:   Sat, 9 Jun 2018 19:51:39 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     "Fu, Qiaobin" <qiaobinf@...edu>
Cc:     "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "jhs@...atatu.com" <jhs@...atatu.com>,
        Michel Machado <michel@...irati.com.br>,
        "xiyou.wangcong@...il.com" <xiyou.wangcong@...il.com>
Subject: Re: [PATCH v3 net-next] net:sched: add action inheritdsfield to
 skbedit

On Sat, Jun 09, 2018 at 10:35:48PM +0000, Fu, Qiaobin wrote:
...
> @@ -73,6 +100,7 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
>  	struct tc_skbedit *parm;
>  	struct tcf_skbedit *d;
>  	u32 flags = 0, *priority = NULL, *mark = NULL, *mask = NULL;
> +	u64 *pure_flags = NULL;
>  	u16 *queue_mapping = NULL, *ptype = NULL;
>  	bool exists = false;
>  	int ret = 0, err;
> @@ -114,6 +142,11 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
>  		mask = nla_data(tb[TCA_SKBEDIT_MASK]);
>  	}
>  
> +	if (tb[TCA_SKBEDIT_FLAGS] != NULL) {
> +		pure_flags = nla_data(tb[TCA_SKBEDIT_FLAGS]);
> +		flags |= *pure_flags;

It shouldn't allow setting flags other than the expected ones.

> +	}
> +
>  	parm = nla_data(tb[TCA_SKBEDIT_PARMS]);
>  
>  	exists = tcf_idr_check(tn, parm->index, a, bind);