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From: "Engel, Amit" <Amit.Engel@Dell.com>
To: Sagi Grimberg <sagi@grimberg.me>,
	"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
	"hch@lst.de" <hch@lst.de>
Subject: RE: [PATCH] nvmet_tcp: fix header digest verification
Date: Wed, 27 Oct 2021 06:50:32 +0000	[thread overview]
Message-ID: <CO1PR19MB4885033D193687FD816821ECEE859@CO1PR19MB4885.namprd19.prod.outlook.com> (raw)
In-Reply-To: <f74d1d66-1400-89cf-fb15-782369ad28d2@grimberg.me>

Thank you Sagi. I just sent the patch

Amit

-----Original Message-----
From: Sagi Grimberg <sagi@grimberg.me> 
Sent: Tuesday, October 26, 2021 6:35 PM
To: Engel, Amit; linux-nvme@lists.infradead.org; hch@lst.de
Subject: Re: [PATCH] nvmet_tcp: fix header digest verification


[EXTERNAL EMAIL] 


> In nvmet_tcp_try_recv_pdu:
> 1. After kernel_recvmsg, 'queue->offset' is equal to 'sizeof(struct nvme_tcp_hdr)'
> 
> 2. update queue->left = hdr->hlen - queue->offset + hdgst and 'goto recv'
> 
> 3. after recvmsg , the offset is greater than the digest.
> 
> So , In this case offset != hdr->hlen
> 
> This will lead to nvmet_tcp_verify_hdgst to always pass, which

I see, so the patch should modify the call-site to nvmet_tcp_verify_hdgst to pass in hdr->hlen.

> 
> Thanks
> Amit
> 
> 
> Internal Use - Confidential

You should remove this footer from your emails to the public mailing list...

  reply	other threads:[~2021-10-27  6:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20211019113307.31852-1-amit.engel@dell.com>
2021-10-19 12:18 ` [PATCH] nvmet_tcp: fix header digest verification Sagi Grimberg
2021-10-20 15:43   ` Engel, Amit
2021-10-20 17:53     ` Sagi Grimberg
2021-10-25  8:47       ` Engel, Amit
2021-10-26 15:34         ` Sagi Grimberg
2021-10-27  6:50           ` Engel, Amit [this message]
     [not found] <20211027064927.20452-1-amit.engel@dell.com>
2021-10-27  7:09 ` Sagi Grimberg
2021-10-27  7:21 ` Christoph Hellwig

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