From: Kurt Kanzenbach <kurt@linutronix.de>
To: Grygorii Strashko <grygorii.strashko@ti.com>,
Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: Petr Machata <petrm@mellanox.com>,
Richard Cochran <richardcochran@gmail.com>,
Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Jiri Pirko <jiri@mellanox.com>,
Ido Schimmel <idosch@mellanox.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>,
Samuel Zou <zou_wei@huawei.com>,
netdev@vger.kernel.org
Subject: Re: [PATCH v3 1/9] ptp: Add generic ptp v2 header parsing function
Date: Thu, 06 Aug 2020 09:56:05 +0200 [thread overview]
Message-ID: <874kpg8ay2.fsf@kurt> (raw)
In-Reply-To: <292391c2-e59c-7c53-6bdd-164d9f3fd867@ti.com>
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On Wed Aug 05 2020, Grygorii Strashko wrote:
> On 05/08/2020 16:57, Kurt Kanzenbach wrote:
>> So, only patch 6 is to drop or 5 as well? Anyhow, I'll wait for your
>> test results. Thanks!
>
> Patch 5 not affected as all RX packet have timestamp and it's coming different way.
> TX not affected as skb come to .xmit() properly initialized.
OK.
>
> As I've just replied for patch 6 - skb_reset_mac_header() helps.
OK. I'll add it. Thanks for testing and fixing it.
>
> Rhetorical question - is below check really required?
> Bad packets (short, crc) expected to be discarded by HW
>
> /* Ensure that the entire header is present in this packet. */
> if (ptr + sizeof(struct ptp_header) > skb->data + skb->len)
> return NULL;
Even if it's a rhetorical question - Can we rely on the fact that too
short packets (or bad) are discarded? All driver instances I've changed
in this series do the length check somehow.
>
>
> And I'd like to ask you to update ptp_parse_header() documentation
> with description of expected SKB state for this function to work.
Yes, I've wanted to do that anyway.
Thanks,
Kurt
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next prev parent reply other threads:[~2020-08-06 11:05 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 8:00 [PATCH v3 0/9] ptp: Add generic helper functions Kurt Kanzenbach
2020-07-30 8:00 ` [PATCH v3 1/9] ptp: Add generic ptp v2 header parsing function Kurt Kanzenbach
2020-07-30 10:15 ` Petr Machata
2020-07-31 10:06 ` Kurt Kanzenbach
2020-08-04 20:56 ` Grygorii Strashko
2020-08-04 21:07 ` Russell King - ARM Linux admin
2020-08-04 21:34 ` Grygorii Strashko
2020-08-04 21:44 ` Russell King - ARM Linux admin
2020-08-04 22:04 ` Grygorii Strashko
2020-08-04 23:14 ` Russell King - ARM Linux admin
2020-08-05 9:29 ` Kurt Kanzenbach
2020-08-05 12:59 ` Grygorii Strashko
2020-08-05 13:57 ` Kurt Kanzenbach
2020-08-05 19:15 ` Grygorii Strashko
2020-08-06 7:56 ` Kurt Kanzenbach [this message]
2020-08-05 15:25 ` Richard Cochran
2020-08-02 15:13 ` Richard Cochran
2020-08-02 20:20 ` Florian Fainelli
2020-07-30 8:00 ` [PATCH v3 2/9] ptp: Add generic ptp message type function Kurt Kanzenbach
2020-08-02 15:18 ` Richard Cochran
2020-08-02 20:20 ` Florian Fainelli
2020-07-30 8:00 ` [PATCH v3 3/9] net: dsa: mv88e6xxx: Use generic helper function Kurt Kanzenbach
2020-08-02 15:18 ` Richard Cochran
2020-08-02 20:21 ` Florian Fainelli
2020-07-30 8:00 ` [PATCH v3 4/9] mlxsw: spectrum_ptp: " Kurt Kanzenbach
2020-07-30 10:20 ` Petr Machata
2020-08-02 20:21 ` Florian Fainelli
2020-07-30 8:00 ` [PATCH v3 5/9] ethernet: ti: am65-cpts: " Kurt Kanzenbach
2020-07-30 9:19 ` Grygorii Strashko
2020-07-30 9:36 ` Kurt Kanzenbach
2020-07-30 10:24 ` Arnd Bergmann
2020-07-31 11:48 ` Kurt Kanzenbach
2020-07-31 12:55 ` Grygorii Strashko
2020-07-31 13:10 ` Kurt Kanzenbach
2020-07-30 8:00 ` [PATCH v3 6/9] ethernet: ti: cpts: " Kurt Kanzenbach
2020-08-02 20:22 ` Florian Fainelli
2020-08-05 18:52 ` Grygorii Strashko
2020-07-30 8:00 ` [PATCH v3 7/9] net: phy: dp83640: " Kurt Kanzenbach
2020-08-02 20:23 ` Florian Fainelli
2020-08-02 22:54 ` Richard Cochran
2020-07-30 8:00 ` [PATCH v3 8/9] ptp: ptp_ines: " Kurt Kanzenbach
2020-08-02 20:23 ` Florian Fainelli
2020-07-30 8:00 ` [PATCH v3 9/9] ptp: Remove unused macro Kurt Kanzenbach
2020-08-02 20:24 ` Florian Fainelli
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