netdev - Re: [PATCH 07/22] RDMA/irdma: Register an auxiliary driver and implement private channel OPs

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Message-ID: <20210127231641.GS4147@nvidia.com>
Date:   Wed, 27 Jan 2021 19:16:41 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     "Saleem, Shiraz" <shiraz.saleem@...el.com>
CC:     Leon Romanovsky <leon@...nel.org>,
        "dledford@...hat.com" <dledford@...hat.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Ertman, David M" <david.m.ertman@...el.com>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>,
        "Ismail, Mustafa" <mustafa.ismail@...el.com>
Subject: Re: [PATCH 07/22] RDMA/irdma: Register an auxiliary driver and
 implement private channel OPs

On Wed, Jan 27, 2021 at 10:17:56PM +0000, Saleem, Shiraz wrote:

> Even with another core PCI driver, there still needs to be private
> communication channel between the aux rdma driver and this PCI
> driver to pass things like QoS updates.

Data pushed from the core driver to its aux drivers should either be
done through new callbacks in a struct device_driver or by having a
notifier chain scheme from the core driver.

Jason