netdev - Re: [PATCH wpan-next v2 2/2] net: ieee802154: Move the address structure earlier and provide a kdoc

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Message-ID: <20220131114645.341d61e9@xps13>
Date:   Mon, 31 Jan 2022 11:46:45 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Alexander Aring <alex.aring@...il.com>
Cc:     Stefan Schmidt <stefan@...enfreihafen.org>,
        linux-wpan - ML <linux-wpan@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        David Girault <david.girault@...vo.com>,
        Romuald Despres <romuald.despres@...vo.com>,
        Frederic Blain <frederic.blain@...vo.com>,
        Nicolas Schodet <nico@...fr.eu.org>
Subject: Re: [PATCH wpan-next v2 2/2] net: ieee802154: Move the address
 structure earlier and provide a kdoc

Hi Alexander,

alex.aring@...il.com wrote on Sun, 30 Jan 2022 16:09:00 -0500:

> Hi,
> 
> On Fri, Jan 28, 2022 at 6:20 AM Miquel Raynal <miquel.raynal@...tlin.com> wrote:
> >
> > From: David Girault <david.girault@...vo.com>
> >
> > Move the address structure earlier in the cfg802154.h header in order to
> > use it in subsequent additions. Give this structure a header to better
> > explain its content.
> >
> > Signed-off-by: David Girault <david.girault@...vo.com>
> > [miquel.raynal@...tlin.com: Isolate this change from a bigger commit and
> >                             reword the comment]
> > Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
> > ---
> >  include/net/cfg802154.h | 28 +++++++++++++++++++---------
> >  1 file changed, 19 insertions(+), 9 deletions(-)
> >
> > diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
> > index 4491e2724ff2..0b8b1812cea1 100644
> > --- a/include/net/cfg802154.h
> > +++ b/include/net/cfg802154.h
> > @@ -29,6 +29,25 @@ struct ieee802154_llsec_key_id;
> >  struct ieee802154_llsec_key;
> >  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
> >
> > +/**
> > + * struct ieee802154_addr - IEEE802.15.4 device address
> > + * @mode: Address mode from frame header. Can be one of:
> > + *        - @IEEE802154_ADDR_NONE
> > + *        - @IEEE802154_ADDR_SHORT
> > + *        - @IEEE802154_ADDR_LONG
> > + * @pan_id: The PAN ID this address belongs to
> > + * @short_addr: address if @mode is @IEEE802154_ADDR_SHORT
> > + * @extended_addr: address if @mode is @IEEE802154_ADDR_LONG
> > + */
> > +struct ieee802154_addr {
> > +       u8 mode;
> > +       __le16 pan_id;
> > +       union {
> > +               __le16 short_addr;
> > +               __le64 extended_addr;
> > +       };
> > +};
> > +
> >  struct cfg802154_ops {
> >         struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
> >                                                            const char *name,
> > @@ -277,15 +296,6 @@ static inline void wpan_phy_net_set(struct wpan_phy *wpan_phy, struct net *net)
> >         write_pnet(&wpan_phy->_net, net);
> >  }
> >
> > -struct ieee802154_addr {
> > -       u8 mode;
> > -       __le16 pan_id;
> > -       union {
> > -               __le16 short_addr;
> > -               __le64 extended_addr;
> > -       };
> > -};
> > -  
> 
> I don't see the sense of moving this around? Is there a compilation
> warning/error?

Not yet but we will need to move this structure around soon. This
commit is like a 'preparation' step for the changes coming later.

I can move this later if you prefer.

Thanks,
Miquèl