From: Jason Gunthorpe <jgg@ziepe.ca>
To: Leon Romanovsky <leon@kernel.org>
Cc: Doug Ledford <dledford@redhat.com>,
RDMA mailing list <linux-rdma@vger.kernel.org>,
Parav Pandit <parav@mellanox.com>,
Steve Wise <swise@opengridcomputing.com>
Subject: Re: [PATCH rdma-next 2/2] IB: Support netlink commands in non init_net net namespaces
Date: Tue, 9 Jul 2019 09:25:24 -0300 [thread overview]
Message-ID: <20190709122524.GA3422@ziepe.ca> (raw)
In-Reply-To: <20190709063842.GE7034@mtr-leonro.mtl.com>
On Tue, Jul 09, 2019 at 09:38:42AM +0300, Leon Romanovsky wrote:
> On Mon, Jul 08, 2019 at 05:20:23PM -0300, Jason Gunthorpe wrote:
> > On Thu, Jul 04, 2019 at 04:04:02PM +0300, Leon Romanovsky wrote:
> > > -int rdma_nl_unicast(struct sk_buff *skb, u32 pid)
> > > +int rdma_nl_unicast(struct net *net, struct sk_buff *skb, u32 pid)
> > > {
> > > + struct rdma_dev_net *rnet = net_generic(net, rdma_dev_net_id);
> >
> > This should be a proper type safe accessor in all places
>
> "const struct net *net" and not "struct net *net"?
No,
static inline struct rdma_dev_net *rdma_get_net(struct net *net);
> >
> > > -void rdma_nl_exit(void)
> > > +void rdma_nl_net_exit(struct rdma_dev_net *rnet)
> > > {
> > > - int idx;
> > > -
> > > - for (idx = 0; idx < RDMA_NL_NUM_CLIENTS; idx++)
> > > - rdma_nl_unregister(idx);
> >
> > There should be a WARN_ON during the module unload that no NL clients
> > are still registered
>
> IMHO, the usage of WARN_ON is overrated.
If there is to be any code at all I want to see WARN_ON's for things
that can't happen. Not pr_debug, not nonsense loops like the above.
Jason
next prev parent reply other threads:[~2019-07-09 12:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 13:04 [PATCH rdma-next 0/2] Allow netlink commands in non init_net net namespace Leon Romanovsky
2019-07-04 13:04 ` [PATCH rdma-next 1/2] IB/core: Work on the caller socket net namespace in nldev_newlink() Leon Romanovsky
2019-07-04 13:04 ` [PATCH rdma-next 2/2] IB: Support netlink commands in non init_net net namespaces Leon Romanovsky
2019-07-08 20:20 ` Jason Gunthorpe
2019-07-09 6:38 ` Leon Romanovsky
2019-07-09 12:25 ` Jason Gunthorpe [this message]
2019-07-09 6:55 ` Parav Pandit
2019-07-04 17:34 ` [PATCH rdma-next 0/2] Allow netlink commands in non init_net net namespace Jason Gunthorpe
2019-07-05 2:12 ` Parav Pandit
2019-07-08 20:21 ` Jason Gunthorpe
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