netdev - Re: [RESEND net-next 1/2] net: hns3: add support for PTP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210605155143.GA10328@localhost>
Date:   Sat, 5 Jun 2021 08:51:43 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     "huangguangbin (A)" <huangguangbin2@...wei.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, salil.mehta@...wei.com,
        lipeng321@...wei.com, tanhuazhong@...wei.com
Subject: Re: [RESEND net-next 1/2] net: hns3: add support for PTP

On Sat, Jun 05, 2021 at 05:54:45PM +0800, huangguangbin (A) wrote:
> > This won't work.  After all, the ISR thread might already be running.
> > Use a proper spinlock instead.
> > 
> Thanks for review. Using spinlock in irq_handler looks heavy, what about
> adding a new flag HCLGE_STATE_PTP_CLEANING_TX_HWTS for hclge_ptp_clean_tx_hwts()?
> Function hclge_ptp_clean_tx_hwts() test and set this flag at the beginning
> and clean it in the end. Do you think it is Ok?

No, I don't.  Use a proper lock.  Don't make vague arguments about how
it "looks heavy".

Thanks,
Richard