From: David Miller <davem@davemloft•net>
To: shemminger@vyatta•com
Cc: bhutchings@solarflare•com, sassmann@redhat•com,
netdev@vger•kernel.org, linux-kernel@vger•kernel.org,
gospo@redhat•com, gregory.v.rose@intel•com,
alexander.h.duyck@intel•com, leedom@chelsio•com,
harald@redhat•com
Subject: Re: [PATCH net-next] sysfs: add entry to indicate network interfaces with random MAC address
Date: Tue, 20 Jul 2010 14:20:45 -0700 (PDT) [thread overview]
Message-ID: <20100720.142045.32697196.davem@davemloft.net> (raw)
In-Reply-To: <20100720141816.16f0a939@nehalam>
From: Stephen Hemminger <shemminger@vyatta•com>
Date: Tue, 20 Jul 2010 14:18:16 -0700
> No one mentioned that the first octet of an Ethernet address already
> indicates "software generated" Ethernet address. Per the standard,
> if bit 1 is set it means address is locally assigned.
>
> static inline bool is_locally_assigned_ether(const u8 *addr)
> {
> return (addr[0] & 0x2) != 0;
> }
W00t!
Indeed, can udev just use that? :-)
next prev parent reply other threads:[~2010-07-20 21:20 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-20 10:50 [PATCH net-next] sysfs: add entry to indicate network interfaces with random MAC address Stefan Assmann
2010-07-20 11:20 ` Ben Hutchings
2010-07-20 11:47 ` Stefan Assmann
2010-07-20 11:58 ` Alex Badea
2010-07-20 12:17 ` Stefan Assmann
2010-07-20 20:18 ` David Miller
2010-07-21 8:10 ` Stefan Assmann
2010-07-21 13:54 ` Ben Hutchings
2010-07-22 12:50 ` [PATCH net-next] sysfs: add attribute to indicate hw address assignment type Stefan Assmann
2010-07-22 14:07 ` Ben Hutchings
2010-07-22 14:47 ` Stefan Assmann
2010-07-25 3:50 ` David Miller
2010-07-20 12:07 ` [PATCH net-next] sysfs: add entry to indicate network interfaces with random MAC address Ben Hutchings
2010-07-20 12:41 ` Stefan Assmann
2010-07-20 14:29 ` Ben Hutchings
2010-07-20 20:17 ` David Miller
2010-07-20 21:18 ` Stephen Hemminger
2010-07-20 21:20 ` David Miller [this message]
2010-07-21 6:26 ` Harald Hoyer
2010-07-21 6:34 ` David Miller
2010-07-21 6:47 ` Harald Hoyer
2010-07-21 15:07 ` Andy Gospodarek
2010-07-21 16:34 ` Casey Leedom
2010-07-21 17:28 ` Stephen Hemminger
2010-07-21 17:32 ` David Miller
2010-07-21 18:29 ` Casey Leedom
2010-07-21 18:39 ` David Miller
2010-07-21 19:25 ` Casey Leedom
2010-07-21 18:43 ` Rose, Gregory V
2010-07-21 18:48 ` David Miller
2010-07-21 18:50 ` David Miller
2010-07-21 19:02 ` Rose, Gregory V
2010-07-21 19:33 ` David Miller
2010-07-21 19:35 ` Rose, Gregory V
2010-07-22 7:12 ` Ian Campbell
2010-07-22 6:53 ` Stefan Assmann
2010-07-23 0:26 ` Casey Leedom
2010-07-23 8:08 ` Stefan Assmann
2010-07-23 16:35 ` Casey Leedom
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