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From: Jason Gunthorpe <jgg@nvidia.com>
To: liweihang <liweihang@huawei.com>
Cc: "dledford@redhat.com" <dledford@redhat.com>,
	"leon@kernel.org" <leon@kernel.org>,
	"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
	"linuxarm@openeuler.org" <linuxarm@openeuler.org>
Subject: Re: Question about the mechanism of RoCEv2 VLAN validation
Date: Thu, 28 Jan 2021 10:11:36 -0400	[thread overview]
Message-ID: <20210128141136.GF4247@nvidia.com> (raw)
In-Reply-To: <ff917571dbae45fe9c9d840bac400404@huawei.com>

On Thu, Jan 28, 2021 at 02:08:21PM +0000, liweihang wrote:

> UD is connectionless-oriented, an UD QP won't record VLAN info in it's QPC,
> so how to achieve the checking mechanism? Or a UD QP should just ignore the
> unmatched VLAN ID?

Right, UD QPs recieve all packets for the entire device that match the
UD QPN

They indirectly report the incoming gid table index they were matched
with in the completion and the first 40 bytes

If an app only wants to look at certain gid table entries then it is
up to the app to filter

Jason

  reply	other threads:[~2021-01-28 14:12 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-28 14:08 Question about the mechanism of RoCEv2 VLAN validation liweihang
2021-01-28 14:11 ` Jason Gunthorpe [this message]
2021-01-29  1:21   ` liweihang

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