linux-kernel - Re: [PATCH] RDMA/siw: Remove direct link to net

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Message-ID: <20241210175237.3342a9eb@kernel.org>
Date: Tue, 10 Dec 2024 17:52:37 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Jason Gunthorpe <jgg@...pe.ca>
Cc: Bernard Metzler <bmt@...ich.ibm.com>, linux-rdma@...r.kernel.org,
 leon@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 syzkaller-bugs@...glegroups.com, zyjzyj2000@...il.com,
 syzbot+4b87489410b4efd181bf@...kaller.appspotmail.com
Subject: Re: [PATCH] RDMA/siw: Remove direct link to net_device

On Tue, 10 Dec 2024 10:56:27 -0400 Jason Gunthorpe wrote:
> >  struct siw_device {
> >  	struct ib_device base_dev;
> > -	struct net_device *netdev;
> >  	struct siw_dev_cap attrs;
> >  
> >  	u32 vendor_part_id;
> > +	struct {
> > +		int ifindex;  
> 
> ifindex is only stable so long as you are holding a reference on the
> netdev..

Does not compute. Can you elaborate what you mean, Jason?