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

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Date:   Sun, 30 Jan 2022 16:09:00 -0500
From:   Alexander Aring <alex.aring@...il.com>
To:     Miquel Raynal <miquel.raynal@...tlin.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,

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?

- Alex