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From: Stephen Hemminger <stephen@networkplumber.org>
To: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Cc: Thomas Monjalon <thomas@monjalon.net>,
	dev@dpdk.org, matan@mellanox.com, Gaetan Rivet <grive@u256.net>
Subject: Re: [dpdk-dev] [PATCH 2/2] net/failsafe: fix primary/secondary mutex
Date: Tue, 8 Jun 2021 08:42:10 -0700
Message-ID: <20210608084210.73d05f60@hermes.local> (raw)
In-Reply-To: <e20cd33e-f44d-0cc9-67d7-43668c5fd866@oktetlabs.ru>

On Tue, 8 Jun 2021 11:00:37 +0300
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru> wrote:

> On 4/19/21 8:08 PM, Thomas Monjalon wrote:
> > About the title, better to speak about multi-process,
> > it is less confusing than primary/secondary.
> > 
> > 15/03/2021 20:27, Stephen Hemminger:  
> >> Set mutex used in failsafe driver to protect when used by
> >> both primary and secondary process. Without this fix, the failsafe
> >> lock is not really locking when there are multiple secondary processes.
> >>
> >> Bugzilla ID: 662
> >> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> >> Fixes: 655fcd68c7d2 ("net/failsafe: fix hotplug races")
> >> Cc: matan@mellanox.com  
> > 
> > The correct order for above lines is:
> > 
> > Bugzilla ID: 662
> > Fixes: 655fcd68c7d2 ("net/failsafe: fix hotplug races")
> > 
> > Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> >   
> >> ---
> >> --- a/drivers/net/failsafe/failsafe.c
> >> +++ b/drivers/net/failsafe/failsafe.c
> >> @@ -140,6 +140,11 @@ fs_mutex_init(struct fs_priv *priv)
> >>  		ERROR("Cannot initiate mutex attributes - %s", strerror(ret));
> >>  		return ret;
> >>  	}
> >> +	/* Allow mutex to protect primary/secondary */
> >> +	ret = pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
> >> +	if (ret)
> >> +		ERROR("Cannot set mutex shared - %s", strerror(ret));  
> > 
> > Why not returning an error here?  
> 
> +1
> 
> I think it would be safer to return an error here.

Ok but it never happens.


  reply	other threads:[~2021-06-08 15:42 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-15 19:27 [dpdk-dev] [PATCH 0/2] Mark shared pthread mutex Stephen Hemminger
2021-03-15 19:27 ` [dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe Stephen Hemminger
2021-03-16 23:48   ` Suanming Mou
2021-03-17  0:13     ` Stephen Hemminger
2021-03-17  0:32       ` Suanming Mou
2021-04-14 13:06     ` Ferruh Yigit
2021-04-15  2:55       ` Suanming Mou
2021-04-15  3:17         ` Stephen Hemminger
2021-04-15  7:42         ` Ferruh Yigit
2021-04-15 20:04           ` Stephen Hemminger
2021-04-16  0:57           ` Suanming Mou
2021-04-16  3:19           ` Ajit Khaparde
2021-04-16  1:41       ` fengchengwen
2021-04-16  8:12         ` Ferruh Yigit
2021-04-16  8:18   ` Ferruh Yigit
2021-04-19 17:14   ` Thomas Monjalon
2021-04-19 17:45     ` Stephen Hemminger
2021-04-19 18:09       ` Thomas Monjalon
2021-06-08  8:07   ` Andrew Rybchenko
2021-03-15 19:27 ` [dpdk-dev] [PATCH 2/2] net/failsafe: fix primary/secondary mutex Stephen Hemminger
2021-04-14 13:10   ` Ferruh Yigit
2021-04-16  8:19     ` Ferruh Yigit
2021-04-19 17:08   ` Thomas Monjalon
2021-06-08  8:00     ` Andrew Rybchenko
2021-06-08 15:42       ` Stephen Hemminger [this message]
2021-06-08 15:55         ` Andrew Rybchenko
2021-06-08 20:48           ` Stephen Hemminger
2021-06-09 10:04             ` Andrew Rybchenko
2021-06-14 14:43               ` Gaëtan Rivet
2021-03-15 19:45 ` [dpdk-dev] [PATCH 0/2] Mark shared pthread mutex Stephen Hemminger
2021-03-16 16:28 ` Stephen Hemminger
2021-04-16  8:25   ` Ferruh Yigit

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