From: Ben Greear <greearb@candelatech.com>
To: David Miller <davem@davemloft.net>
Cc: hadi@cyberus.ca, tgraf@suug.ch, kaber@trash.net, netdev@vger.kernel.org
Subject: Re: [PATCH 2/3] [VLAN]: Update iif when receiving via VLAN device
Date: Thu, 29 Jun 2006 17:44:41 -0700 [thread overview]
Message-ID: <44A473F9.7030601@candelatech.com> (raw)
In-Reply-To: <20060629.172948.59656719.davem@davemloft.net>
David Miller wrote:
> I'm saying that, we don't need the refcount, just setting
> the skb->input_index thing, unless someone actually cares
> about the input device.
>
> As long as the packet hits not paths that care about the
> SKB input device, no atomic refcounts are taken. It's
> just an integer sitting there in the SKB.
Also, if this lookup is to be done multiple times per skb, we could
do the lookup once and grab the ref at that time and store the
pointer in the skb. If you wanted to be truly horible about it..could
use a 64-bit input_index and copy the pointer there (and set a flag somewhere
noting it is no longer an index but a pointer) so save the extra
64-bits.
Ben
> -
> To unsubscribe from this list: send the line "unsubscribe netdev" in
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>
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2006-06-30 0:45 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-26 14:54 [PATCHSET] Towards accurate incoming interface information Thomas Graf
2006-06-25 22:00 ` [PATCH 1/3] [NET]: Use interface index to keep input device information Thomas Graf
2006-06-25 22:00 ` [PATCH 2/3] [VLAN]: Update iif when receiving via VLAN device Thomas Graf
2006-06-26 17:04 ` Patrick McHardy
2006-06-26 17:46 ` David Miller
2006-06-26 18:24 ` Patrick McHardy
2006-06-26 18:44 ` Thomas Graf
2006-06-26 22:29 ` Patrick McHardy
2006-06-26 22:49 ` Patrick McHardy
2006-06-27 10:03 ` Thomas Graf
2006-06-27 13:07 ` jamal
2006-06-28 10:18 ` Thomas Graf
2006-06-28 12:22 ` jamal
2006-06-28 13:01 ` Thomas Graf
2006-06-28 13:46 ` jamal
2006-06-29 8:51 ` Thomas Graf
2006-06-29 20:55 ` Thomas Graf
2006-06-29 23:23 ` jamal
2006-06-29 23:39 ` Thomas Graf
2006-06-29 23:47 ` David Miller
2006-06-30 0:08 ` jamal
2006-06-30 0:12 ` David Miller
2006-06-30 0:26 ` jamal
2006-06-30 0:29 ` David Miller
2006-06-30 0:44 ` Ben Greear [this message]
2006-06-30 0:48 ` jamal
2006-06-30 0:55 ` Thomas Graf
2006-06-30 1:18 ` jamal
2006-06-30 0:03 ` jamal
2006-06-30 0:46 ` Thomas Graf
2006-06-30 1:11 ` jamal
2006-06-30 13:08 ` Thomas Graf
2006-06-30 13:20 ` Nicolas Dichtel
[not found] ` <44A52435.20909@6wind.com>
2006-06-30 13:36 ` Thomas Graf
2006-06-30 13:43 ` Nicolas Dichtel
2006-06-30 17:01 ` Patrick McHardy
2006-06-30 17:02 ` Patrick McHardy
2006-06-30 13:57 ` jamal
2006-06-30 14:15 ` Thomas Graf
2006-06-30 14:35 ` jamal
2006-06-30 15:40 ` Ben Greear
2006-06-30 16:32 ` Thomas Graf
2006-06-30 17:13 ` Thomas Graf
2006-06-30 17:18 ` Patrick McHardy
2006-06-30 17:32 ` jamal
2006-06-30 17:42 ` Patrick McHardy
2006-06-30 17:44 ` Thomas Graf
2006-06-30 19:40 ` jamal
2006-06-30 20:17 ` David Miller
2006-06-30 17:42 ` Thomas Graf
2006-06-30 19:34 ` jamal
2006-06-30 20:08 ` Thomas Graf
2006-06-30 20:42 ` jamal
2006-06-30 17:27 ` Ben Greear
2006-06-30 21:09 ` jamal
2006-06-30 21:20 ` Thomas Graf
2006-06-30 21:35 ` jamal
2006-06-30 23:22 ` Thomas Graf
2006-07-01 2:23 ` jamal
2006-07-01 11:51 ` Thomas Graf
2006-07-01 13:47 ` jamal
2006-06-30 17:19 ` jamal
2006-06-30 17:33 ` Patrick McHardy
2006-06-30 19:59 ` jamal
2006-06-30 20:30 ` Thomas Graf
2006-06-30 20:33 ` David Miller
2006-06-30 20:54 ` jamal
2006-06-30 21:10 ` Thomas Graf
2006-06-30 21:31 ` jamal
2006-06-30 23:45 ` Thomas Graf
2006-07-01 2:59 ` jamal
2006-07-01 11:28 ` Thomas Graf
2006-07-01 13:35 ` jamal
2006-07-08 10:54 ` Thomas Graf
2006-07-08 14:14 ` Jamal Hadi Salim
2006-07-08 14:29 ` Jamal Hadi Salim
2006-07-08 23:46 ` Thomas Graf
2006-07-08 23:48 ` Thomas Graf
2006-07-09 12:52 ` Jamal Hadi Salim
2006-07-09 13:17 ` Jamal Hadi Salim
2006-07-09 13:33 ` Thomas Graf
2006-07-09 14:03 ` Jamal Hadi Salim
2006-07-09 14:19 ` Thomas Graf
2006-07-09 15:00 ` Jamal Hadi Salim
2006-07-09 15:54 ` Thomas Graf
2006-07-09 23:06 ` Jamal Hadi Salim
2006-07-01 2:47 ` Patrick McHardy
2006-06-30 17:34 ` Thomas Graf
2006-06-25 22:00 ` [PATCH 3/3] [PKT_SCHED]: Add iif meta match Thomas Graf
2006-06-27 15:07 ` [PATCHSET] Towards accurate incoming interface information Thomas Graf
2006-06-27 20:24 ` David Miller
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