Re: [PATCH 08/14] RDMA/ionic: Register auxiliary module for ionic ethernet adapter

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On 4/25/25 22:40, Leon Romanovsky wrote:
On Fri, Apr 25, 2025 at 03:46:06PM +0530, Abhijit Gangurde wrote:
On 4/24/25 18:38, Jason Gunthorpe wrote:
On Wed, Apr 23, 2025 at 03:59:07PM +0530, Abhijit Gangurde wrote:
+static int ionic_aux_probe(struct auxiliary_device *adev,
+			   const struct auxiliary_device_id *id)
+{
+	struct ionic_aux_dev *ionic_adev;
+	struct net_device *ndev;
+	struct ionic_ibdev *dev;
+
+	ionic_adev = container_of(adev, struct ionic_aux_dev, adev);
+	ndev = ionic_api_get_netdev_from_handle(ionic_adev->handle);
It must not do this, the net_device should not go into the IB driver,
like this that will create a huge complex tangled mess.

The netdev(s) come in indirectly through the gid table and through the
net notifiers and ib_device_set_netdev() and they should only be
touched in paths dealing with specific areas.

So don't use things like netdev_err, we have ib_err/dev_err and
related instead for IB drivers to use.
Sure. Will remove storing of net_device in the IB driver and its
references in the next spin. Will wait for some more feedback
before rolling out v2.
The problem is that coupling with net_device is so distracting that
both of us are not really invested time into deep review of this series.

Another problematic pattern is usage of "void *handle" to convey
information between aux devices. Please use struct pointer instead of
void for that.

Thanks

Thanks. Will address these in v2.

Abhijit



Thanks,
Abhijit

+struct ionic_ibdev {
+	struct ib_device	ibdev;
+
+	struct device		*hwdev;
+	struct net_device	*ndev;
Same here, this member should not exist, and it didn't hold a
refcount for this pointer.

Jason




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