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X-CSE-ConnectionGUID: eGyJvwGRSOKSbqOR2wgwYw== X-CSE-MsgGUID: EboAxIFfT5qIK23zQ88kTA== X-IronPort-AV: E=McAfee;i="6600,9927,11047"; a="9204855" X-IronPort-AV: E=Sophos;i="6.07,212,1708416000"; d="scan'208";a="9204855" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2024 04:55:27 -0700 X-CSE-ConnectionGUID: BRMNBJ1DTxOiScOWaf1H3A== X-CSE-MsgGUID: Y3uqJNdJToyBcARFJe13cQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,212,1708416000"; d="scan'208";a="23040305" Received: from unknown (HELO mev-dev) ([10.237.112.144]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2024 04:55:25 -0700 Date: Thu, 18 Apr 2024 13:55:03 +0200 From: Michal Swiatkowski To: Shay Drori Cc: intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, jacob.e.keller@intel.com, michal.kubiak@intel.com, maciej.fijalkowski@intel.com, sridhar.samudrala@intel.com, przemyslaw.kitszel@intel.com, wojciech.drewek@intel.com, pio.raczynski@gmail.com, jiri@nvidia.com, mateusz.polchlopek@intel.com Subject: Re: [iwl-next v4 8/8] ice: allow to activate and deactivate subfunction Message-ID: References: <20240417142028.2171-1-michal.swiatkowski@linux.intel.com> <20240417142028.2171-9-michal.swiatkowski@linux.intel.com> <0045c1a5-1065-40b3-ae61-1f372d4a89e5@nvidia.com> <1b678660-7ee7-44d0-91a7-14985d2c469e@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1b678660-7ee7-44d0-91a7-14985d2c469e@nvidia.com> On Thu, Apr 18, 2024 at 11:12:47AM +0300, Shay Drori wrote: > resend as plain test > > On 18/04/2024 10:53, Shay Drori wrote: > > On 17/04/2024 17:20, Michal Swiatkowski wrote: > > > +/** > > > + * ice_devlink_port_fn_state_get - devlink handler for port state get > > > + * @port: pointer to devlink port > > > + * @state: admin configured state of the port > > > + * @opstate: current port operational state > > > + * @extack: extack for reporting error messages > > > + * > > > + * Gets port state. > > > + * > > > + * Return: zero on success or an error code on failure. > > > + */ > > > +static int > > > +ice_devlink_port_fn_state_get(struct devlink_port *port, > > > + enum devlink_port_fn_state *state, > > > + enum devlink_port_fn_opstate *opstate, > > > + struct netlink_ext_ack *extack) > > > +{ > > > + struct ice_dynamic_port *dyn_port; > > > + > > > + dyn_port = ice_devlink_port_to_dyn(port); > > > + > > > + if (dyn_port->active) { > > > + *state = DEVLINK_PORT_FN_STATE_ACTIVE; > > > + *opstate = DEVLINK_PORT_FN_OPSTATE_ATTACHED; > > > > > > DEVLINK_PORT_FN_OPSTATE_ATTACHED means the SF is up/bind[1]. > > ice is using auxiliary bus for SFs, which means user can unbind it > > via the auxiliary sysfs (/sys/bus/auxiliary/drivers/ice_sf/unbind). > > In this case[2], you need to return: > > *state = DEVLINK_PORT_FN_STATE_ACTIVE; > > *opstate = DEVLINK_PORT_FN_OPSTATE_DETACHED; > > Thanks, I didn't think about unbinding/binding the aux driver via sysfs. To be sure: - user create the subfunction: INACTIVE, DETACHED - user activate it: ACTIVE, ATTACHED - user unbind driver: ACTIVE, DETACHED - user can bind it again as long as subfunction port is ACTIVE is it right? I will fix the comment from previous patch and add state tracking for ATTACHED/DETACHED. Thanks, Michal > > > > [1] > > Documentation from include/uapi/linux/devlink.h: > > > > * @DEVLINK_PORT_FN_OPSTATE_ATTACHED: Driver is attached to the function. > > <...> > > * @DEVLINK_PORT_FN_OPSTATE_DETACHED: Driver is detached from the function. > > > > > + } else { > > > + *state = DEVLINK_PORT_FN_STATE_INACTIVE; > > > + *opstate = DEVLINK_PORT_FN_OPSTATE_DETACHED; > > > + } > > > + > > > + return 0; > > > +} > > > +