linux-kernel - RE: [EXTERNAL] Re: [PATCH net-next,v4] net: mana: Add handler for hardware servicing events

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Message-ID:
 <MN0PR21MB3437D613402940F84D110944CA99A@MN0PR21MB3437.namprd21.prod.outlook.com>
Date: Thu, 22 May 2025 00:28:01 +0000
From: Haiyang Zhang <haiyangz@...rosoft.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>, Dexuan Cui
	<decui@...rosoft.com>, "stephen@...workplumber.org"
	<stephen@...workplumber.org>, KY Srinivasan <kys@...rosoft.com>, Paul
 Rosswurm <paulros@...rosoft.com>, "olaf@...fle.de" <olaf@...fle.de>,
	"vkuznets@...hat.com" <vkuznets@...hat.com>, "davem@...emloft.net"
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	<pabeni@...hat.com>, "leon@...nel.org" <leon@...nel.org>, Long Li
	<longli@...rosoft.com>, "ssengar@...ux.microsoft.com"
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	"shradhagupta@...ux.microsoft.com" <shradhagupta@...ux.microsoft.com>,
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	<kotaranov@...rosoft.com>, "horms@...nel.org" <horms@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [EXTERNAL] Re: [PATCH net-next,v4] net: mana: Add handler for
 hardware servicing events



> -----Original Message-----
> From: Jakub Kicinski <kuba@...nel.org>
> Sent: Friday, May 16, 2025 9:05 PM
> To: Haiyang Zhang <haiyangz@...rosoft.com>
> Cc: linux-hyperv@...r.kernel.org; netdev@...r.kernel.org; Dexuan Cui
> <decui@...rosoft.com>; stephen@...workplumber.org; KY Srinivasan
> <kys@...rosoft.com>; Paul Rosswurm <paulros@...rosoft.com>;
> olaf@...fle.de; vkuznets@...hat.com; davem@...emloft.net;
> wei.liu@...nel.org; edumazet@...gle.com; pabeni@...hat.com;
> leon@...nel.org; Long Li <longli@...rosoft.com>;
> ssengar@...ux.microsoft.com; linux-rdma@...r.kernel.org;
> daniel@...earbox.net; john.fastabend@...il.com; bpf@...r.kernel.org;
> ast@...nel.org; hawk@...nel.org; tglx@...utronix.de;
> shradhagupta@...ux.microsoft.com; andrew+netdev@...n.ch; Konstantin
> Taranov <kotaranov@...rosoft.com>; horms@...nel.org; linux-
> kernel@...r.kernel.org
> Subject: [EXTERNAL] Re: [PATCH net-next,v4] net: mana: Add handler for
> hardware servicing events
> 
> On Wed, 14 May 2025 13:30:37 -0700 Haiyang Zhang wrote:
> > +		dev_info(gc->dev, "Start MANA service type:%d\n", type);
> > +		gc->in_service = true;
> > +		mns_wk->pdev = to_pci_dev(gc->dev);
> > +		INIT_WORK(&mns_wk->serv_work, mana_serv_func);
> > +		schedule_work(&mns_wk->serv_work);
> 
> I don't see any refcounting in this patch, and the work is not
> canceled. What if the device is removed between work being scheduled
> and running?

Thanks for the review. I added refcnt handling, and submitted a new
patch.

- Haiyang