Re: [PATCH v2 08/23] RDMA/irdma: Register auxiliary driver and implement private channel OPs

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On Tue, Mar 23, 2021 at 06:59:52PM -0500, Shiraz Saleem wrote:
> From: Mustafa Ismail <mustafa.ismail@xxxxxxxxx>
> 
> Register auxiliary drivers which can attach to auxiliary RDMA
> devices from Intel PCI netdev drivers i40e and ice. Implement the private
> channel ops, and register net notifiers.
> 
> Signed-off-by: Mustafa Ismail <mustafa.ismail@xxxxxxxxx>
> Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
> ---
>  drivers/infiniband/hw/irdma/i40iw_if.c | 229 +++++++++++++
>  drivers/infiniband/hw/irdma/main.c     | 382 ++++++++++++++++++++++
>  drivers/infiniband/hw/irdma/main.h     | 565 +++++++++++++++++++++++++++++++++
>  3 files changed, 1176 insertions(+)
>  create mode 100644 drivers/infiniband/hw/irdma/i40iw_if.c
>  create mode 100644 drivers/infiniband/hw/irdma/main.c
>  create mode 100644 drivers/infiniband/hw/irdma/main.h

<...>

> +/* client interface functions */
> +static const struct i40e_client_ops i40e_ops = {
> +	.open = i40iw_open,
> +	.close = i40iw_close,
> +	.l2_param_change = i40iw_l2param_change
> +};
> +
> +static struct i40e_client i40iw_client = {
> +	.ops = &i40e_ops,
> +	.type = I40E_CLIENT_IWARP,
> +};
> +
> +static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
> +{
> +	struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
> +							       struct i40e_auxiliary_device,
> +							       aux_dev);
> +	struct i40e_info *cdev_info = i40e_adev->ldev;
> +
> +	strncpy(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH);
> +	cdev_info->client = &i40iw_client;
> +	cdev_info->aux_dev = aux_dev;
> +
> +	return cdev_info->ops->client_device_register(cdev_info);

Why do we need all this indirection? I see it as leftover from previous
version where you mixed auxdev with your peer registration logic.

Thanks



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