From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Kurt Kanzenbach <kurt@linutronix.de>, Petr Machata <petrm@mellanox.com>
Cc: 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>,
Russell King <linux@armlinux.org.uk>,
Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>,
Samuel Zou <zou_wei@huawei.com>, <netdev@vger.kernel.org>,
Russell King <rmk+kernel@armlinux.org.uk>
Subject: Re: [PATCH v3 1/9] ptp: Add generic ptp v2 header parsing function
Date: Tue, 4 Aug 2020 23:56:12 +0300 [thread overview]
Message-ID: <09f58c4f-dec5-ebd1-3352-f2e240ddcbe5@ti.com> (raw)
In-Reply-To: <87pn8c0zid.fsf@kurt>
On 31/07/2020 13:06, Kurt Kanzenbach wrote:
> On Thu Jul 30 2020, Petr Machata wrote:
>> Kurt Kanzenbach <kurt@linutronix.de> writes:
>>
>>> @@ -107,6 +107,37 @@ unsigned int ptp_classify_raw(const struct sk_buff *skb)
>>> }
>>> EXPORT_SYMBOL_GPL(ptp_classify_raw);
>>>
>>> +struct ptp_header *ptp_parse_header(struct sk_buff *skb, unsigned int type)
>>> +{
>>> + u8 *data = skb_mac_header(skb);
>>> + u8 *ptr = data;
>>
>> One of the "data" and "ptr" variables is superfluous.
>
> Yeah. Can be shortened to u8 *ptr = skb_mac_header(skb);
Actually usage of skb_mac_header(skb) breaks CPTS RX time-stamping on
am571x platform PATCH 6.
The CPSW RX timestamp requested after full packet put in SKB, but
before calling eth_type_trans().
So, skb->data pints on Eth header, but skb_mac_header() return garbage.
Below diff fixes it for me.
--- a/net/core/ptp_classifier.c
+++ b/net/core/ptp_classifier.c
@@ -109,7 +109,7 @@ EXPORT_SYMBOL_GPL(ptp_classify_raw);
struct ptp_header *ptp_parse_header(struct sk_buff *skb, unsigned int type)
{
- u8 *data = skb_mac_header(skb);
+ u8 *data = skb->data;
u8 *ptr = data;
if (type & PTP_CLASS_VLAN)
>
> However, I'll wait a bit before sending the next version. So, that the
> other maintainers have time to test their drivers.
--
Best regards,
grygorii
next prev parent reply other threads:[~2020-08-04 20:57 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 [this message]
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
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=09f58c4f-dec5-ebd1-3352-f2e240ddcbe5@ti.com \
--to=grygorii.strashko@ti.com \
--cc=andrew@lunn.ch \
--cc=davem@davemloft.net \
--cc=f.fainelli@gmail.com \
--cc=hkallweit1@gmail.com \
--cc=idosch@mellanox.com \
--cc=ivan.khoronzhuk@linaro.org \
--cc=jiri@mellanox.com \
--cc=kuba@kernel.org \
--cc=kurt@linutronix.de \
--cc=linux@armlinux.org.uk \
--cc=netdev@vger.kernel.org \
--cc=petrm@mellanox.com \
--cc=richardcochran@gmail.com \
--cc=rmk+kernel@armlinux.org.uk \
--cc=vivien.didelot@gmail.com \
--cc=zou_wei@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).