netdev - Re: [PATCH net-next v2 RFC 7/8] devlink: Add a generic port parameter

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Date:   Fri, 14 Dec 2018 10:20:53 +0530
From:   Vasundhara Volam <vasundhara-v.volam@...adcom.com>
To:     Jiří Pírko <jiri@...nulli.us>
Cc:     mkubecek@...e.cz, David Miller <davem@...emloft.net>,
        "michael.chan@...adcom.com" <michael.chan@...adcom.com>,
        Jiri Pirko <jiri@...lanox.com>, jakub.kicinski@...ronome.com,
        Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2 RFC 7/8] devlink: Add a generic port parameter

On Thu, Dec 13, 2018 at 6:33 PM Jiri Pirko <jiri@...nulli.us> wrote:
>
> Wed, Dec 12, 2018 at 01:30:23PM CET, vasundhara-v.volam@...adcom.com wrote:
> >On Wed, Dec 12, 2018 at 2:45 PM Michal Kubecek <mkubecek@...e.cz> wrote:
> >>
> >> On Tue, Dec 11, 2018 at 02:16:47PM +0530, Vasundhara Volam wrote:
> >> > wake-on-lan - Enables Wake on Lan for this port. If enabled,
> >> > the controller asserts a wake pin based on the wake-on-lan type.
> >> >
> >> > Cc: Jiri Pirko <jiri@...lanox.com>
> >> > Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
> >> > ---
> >> >  include/net/devlink.h | 16 ++++++++++++++++
> >> >  net/core/devlink.c    |  5 +++++
> >> >  2 files changed, 21 insertions(+)
> >> >
> >> > diff --git a/include/net/devlink.h b/include/net/devlink.h
> >> > index db413d3..93a1030 100644
> >> > --- a/include/net/devlink.h
> >> > +++ b/include/net/devlink.h
> >> > @@ -367,12 +367,25 @@ enum devlink_param_generic_id {
> >> >       DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
> >> >       DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
> >> >       DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
> >> > +     DEVLINK_PARAM_GENERIC_ID_WOL,
> >> >
> >> >       /* add new param generic ids above here*/
> >> >       __DEVLINK_PARAM_GENERIC_ID_MAX,
> >> >       DEVLINK_PARAM_GENERIC_ID_MAX = __DEVLINK_PARAM_GENERIC_ID_MAX - 1,
> >> >  };
> >> >
> >> > +enum devlink_param_wol_types {
> >> > +     DEVLINK_PARAM_WOL_DISABLE = 0,
> >> > +     DEVLINK_PARAM_WOL_MAGIC_PKT,
> >> > +     DEVLINK_PARAM_WOL_PHY,
> >> > +     DEVLINK_PARAM_WOL_UNICAST,
> >> > +     DEVLINK_PARAM_WOL_MULTICAST,
> >> > +     DEVLINK_PARAM_WOL_BROADCAST,
> >> > +     DEVLINK_PARAM_WOL_ARP,
> >> > +     DEVLINK_PARAM_WOL_SECURE,
> >> > +     DEVLINK_PARAM_WOL_FILTERS,
> >> > +};
> >> > +
> >> >  #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME "internal_error_reset"
> >> >  #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
> >> >
> >> > @@ -397,6 +410,9 @@ enum devlink_param_generic_id {
> >> >  #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME "fw_load_policy"
> >> >  #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE DEVLINK_PARAM_TYPE_U8
> >> >
> >> > +#define DEVLINK_PARAM_GENERIC_WOL_NAME "wake-on-lan"
> >>
> >> Nitpick: the other two parameter names use underscores, it would be more
> >> consistent to use them as well.
> >Sure, I will fix this in next version. Thanks.
> >>
> >> > +#define DEVLINK_PARAM_GENERIC_WOL_TYPE DEVLINK_PARAM_TYPE_U8
> >>
> >> Can you be sure it will be always sufficient to enable only one WoL type
> >> unlike in ethtool where bitfield is used so that you can enable multiple
> >> types?
> >Since this is a persistent setting, NIC may not support multiple types
> >of WOL upon power on.
> >If there is any requirement in future to add multiple types, data type
> >can be modified,
>
> It can't. It will become a UAPI. You need to prepare now.
>
>
Okay, I will make this definition close to ethtool WOL types.
Also rename according to ethtool.
> >as other WOL types are also not added now.
> >>
> >> Michal Kubecek