netdev - Re: [PATCH 13/17] iwlwifi: mvm: Convert timers to use timer

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Message-ID: <1509997730.4492.422.camel@coelho.fi>
Date:   Mon, 06 Nov 2017 21:48:50 +0200
From:   Luca Coelho <luca@...lho.fi>
To:     Kees Cook <keescook@...omium.org>
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        Sara Sharon <sara.sharon@...el.com>,
        Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH 13/17] iwlwifi: mvm: Convert timers to use timer_setup()

On Mon, 2017-11-06 at 11:45 -0800, Kees Cook wrote:
> On Sun, Oct 29, 2017 at 5:28 AM, Luca Coelho <luca@...lho.fi> wrote:
> > From: Kees Cook <keescook@...omium.org>
> > 
> > In preparation for unconditionally passing the struct timer_list
> > pointer to
> > all timer callbacks, switch to using the new timer_setup() and
> > from_timer()
> > to pass the timer pointer explicitly.
> > 
> > The RCU lifetime on baid_data is unclear, so this adds a direct
> > copy of the
> > rcu_ptr passed to the original callback. It may be possible to
> > improve this
> > to just use baid_data->mvm->baid_map[baid_data->baid] instead.
> > 
> > Cc: Johannes Berg <johannes.berg@...el.com>
> > Cc: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
> > Cc: Luca Coelho <luciano.coelho@...el.com>
> > Cc: Intel Linux Wireless <linuxwifi@...el.com>
> > Cc: Kalle Valo <kvalo@...eaurora.org>
> > Cc: Sara Sharon <sara.sharon@...el.com>
> > Cc: linux-wireless@...r.kernel.org
> > Cc: netdev@...r.kernel.org
> > Signed-off-by: Kees Cook <keescook@...omium.org>
> > Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
> > ---
> >  drivers/net/wireless/intel/iwlwifi/mvm/mvm.h  |  3 ++-
> >  drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c |  4 ++--
> >  drivers/net/wireless/intel/iwlwifi/mvm/sta.c  | 18 +++++++++----
> > -----
> >  3 files changed, 13 insertions(+), 12 deletions(-)
> 
> Hi,
> 
> Thanks for taking this! I had a question on timing: is this expected
> to land for 4.15? If not, I would like to take this via the timers
> tree, since it is one of the few remaining conversions.

Hi Kees,

Yes, this should land for 4.15.  Kalle just pulled my pull-request
(which includes this) to wireless-drivers-next.  He told me he'll send
a pull-request for 4.15 during this week and hopefully Dave will pull
from him too.

I'll let you know if something doesn't go as planned.

--
Cheers,
Luca.