From: Stephen Hemminger <stephen@networkplumber•org>
To: "Bjørn Mork" <bjorn@mork•no>
Cc: netdev@vger•kernel.org
Subject: Re: [PATCH net-next 01/10] net: etherdevice: add address inherit helper
Date: Fri, 23 Aug 2013 12:24:04 -0700 [thread overview]
Message-ID: <20130823122404.7aebb2c8@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <1377250513-3662-2-git-send-email-bjorn@mork.no>
On Fri, 23 Aug 2013 11:35:04 +0200
Bjørn Mork <bjorn@mork•no> wrote:
> /**
> + * eth_hw_addr_inherit - Copy dev_addr from another net_device
> + * @dst: pointer to net_device to copy dev_addr to
> + * @src: pointer to net_device to copy dev_addr from
> + *
> + * Copy the Ethernet address from one net_device to another along with
> + * the addr_assign_type.
> + */
> +static inline int eth_hw_addr_inherit(struct net_device *dst,
> + struct net_device *src)
> +{
> + if (dst->addr_len != src->addr_len)
> + return -EINVAL;
> +
> + dst->addr_assign_type = src->addr_assign_type;
> + memcpy(dst->dev_addr, src->dev_addr, dst->addr_len);
> + return 0;
> +}
> +
Since all the other code in this file assumes addr_len == ETH_ALEN
why does this code need to handle variable addresses. Trivial but
then the memcpy is fixed size and can be optimized.
next prev parent reply other threads:[~2013-08-23 19:24 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-23 9:35 [PATCH net-next 00/10] set addr_assign_type when inheriting a dev_addr Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 01/10] net: etherdevice: add address inherit helper Bjørn Mork
2013-08-23 19:24 ` Stephen Hemminger [this message]
2013-08-23 22:28 ` Bjørn Mork
2013-08-27 18:35 ` David Miller
2013-08-28 7:17 ` Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 02/10] net: vlan: inherit addr_assign_type along with dev_addr Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 03/10] net: dsa: " Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 04/10] net: macvlan: " Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 05/10] net: team: " Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 06/10] net: airo: " Bjørn Mork
[not found] ` <1377250513-3662-7-git-send-email-bjorn-yOkvZcmFvRU@public.gmane.org>
2013-08-23 14:53 ` John W. Linville
2013-08-23 9:35 ` [PATCH net-next 07/10] net: hostap: " Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 08/10] net: libertas: " Bjørn Mork
2013-08-23 14:52 ` John W. Linville
2013-08-23 9:35 ` [PATCH net-next 09/10] staging: vt6655: " Bjørn Mork
2013-08-23 9:35 ` [PATCH net-next 10/10] staging: vt6656: " Bjørn Mork
2013-08-23 10:03 ` Dan Carpenter
2013-08-23 10:48 ` Bjørn Mork
2013-08-23 11:15 ` Dan Carpenter
2013-08-23 12:06 ` Bjørn Mork
2013-08-23 12:09 ` Dan Carpenter
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