From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [PATCH v4 1/3] fm10k: enable FTAG based forwarding
Date: Tue, 01 Mar 2016 08:35:41 +0100
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References: <1454557129-12825-2-git-send-email-xiao.w.wang@intel.com>
 <1456810601-7419-1-git-send-email-xiao.w.wang@intel.com>
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To: Wang Xiao W <xiao.w.wang@intel.com>
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2016-03-01 13:36, Wang Xiao W:
> +static int
> +fm10k_check_ftag(struct rte_devargs *devargs)
> +{
> +       if (devargs == NULL)
> +               return 0;
> +
> +       if (strstr(devargs->args, "enable_ftag=1") == NULL)
> +               return 0;
> +
> +       return 1;
> +}

With strstr(), chenable_ftag=12 will work :)
Please check how to use kvargs.