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Date:      Tue, 21 Aug 2018 14:26:28 -0700
From:      Gleb Smirnoff <glebius@freebsd.org>
To:        Navdeep Parhar <np@freebsd.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r337932 - in head/sys: net netinet
Message-ID:  <20180821212628.GN27633@FreeBSD.org>
In-Reply-To: <201808162346.w7GNkc2p006822@repo.freebsd.org>
References:  <201808162346.w7GNkc2p006822@repo.freebsd.org>

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  Navdeep,

On Thu, Aug 16, 2018 at 11:46:38PM +0000, Navdeep Parhar wrote:
N> Author: np
N> Date: Thu Aug 16 23:46:38 2018
N> New Revision: 337932
N> URL: https://svnweb.freebsd.org/changeset/base/337932
N> 
N> Log:
N>   Add the ability to look up the 3b PCP of a VLAN interface.  Use it in
N>   toe_l2_resolve to fill up the complete vtag and not just the vid.
N>   
N>   Reviewed by:	kib@
N>   MFC after:	1 week
N>   Sponsored by:	Chelsio Communications
N>   Differential Revision:	https://reviews.freebsd.org/D16752
...
N> +static int
N> +vlan_pcp(struct ifnet *ifp, uint16_t *pcpp)
N> +{
N> +	struct ifvlan *ifv;
N> +
N> +	if (ifp->if_type != IFT_L2VLAN)
N> +		return (EINVAL);
N> +	ifv = ifp->if_softc;
N> +	*pcpp = ifv->ifv_pcp;
N> +	return (0);
N> +}

Is there any good reason not to assert that ifp->if_type == IFT_L2VLAN?

-- 
Gleb Smirnoff



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