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From: Ben Greear <greearb@candelatech.com>
To: Patrick McHardy <kaber@trash.net>
Cc: hadi@cyberus.ca, David Miller <davem@davemloft.net>,
	peter.p.waskiewicz.jr@intel.com, netdev@vger.kernel.org,
	jeff@garzik.org, auke-jan.h.kok@intel.com
Subject: Re: Multiqueue and virtualization WAS(Re: [PATCH 3/3] NET: [SCHED] Qdisc changes and sch_rr added for multiqueue
Date: Fri, 29 Jun 2007 08:33:06 -0700	[thread overview]
Message-ID: <46852632.5050707@candelatech.com> (raw)
In-Reply-To: <46850450.6040608@trash.net>

Patrick McHardy wrote:
> Right, but the current bridging code always uses promiscous mode
> and its nice to avoid that if possible. Looking at the code, it
> should be easy to avoid though by disabling learning (and thus
> promisous mode) and adding unicast filters for all static fdb entries.
>   
I am curious about why people are so hot to do away with promisc mode.  
It seems to me
that in a modern switched environment, there should only very rarely be 
unicast packets received
on an interface that does not want to receive them.

Could someone give a quick example of when I am wrong and promisc mode 
would allow
a NIC to receive a significant number of packets not really destined for it?

Thanks,
Ben


-- 
Ben Greear <greearb@candelatech.com> 
Candela Technologies Inc  http://www.candelatech.com



  parent reply	other threads:[~2007-06-29 15:33 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-28 16:20 [PATCH] NET: Multiple queue hardware support PJ Waskiewicz
2007-06-28 16:21 ` [PATCH 1/3] NET: [DOC] Multiqueue hardware support documentation PJ Waskiewicz
2007-06-28 16:21 ` [PATCH 2/3] NET: [CORE] Stack changes to add multiqueue hardware support API PJ Waskiewicz
2007-06-28 16:31   ` Patrick McHardy
2007-06-28 17:00   ` Patrick McHardy
2007-06-28 19:00     ` Waskiewicz Jr, Peter P
2007-06-28 19:03       ` Patrick McHardy
2007-06-28 19:06         ` Waskiewicz Jr, Peter P
2007-06-28 19:20           ` Patrick McHardy
2007-06-28 19:32             ` Jeff Garzik
2007-06-28 19:37               ` Patrick McHardy
2007-06-28 21:11                 ` Waskiewicz Jr, Peter P
2007-06-28 21:18                   ` Patrick McHardy
2007-06-28 23:08                     ` Waskiewicz Jr, Peter P
2007-06-28 23:31                       ` David Miller
2007-06-28 20:39               ` David Miller
2007-06-29  3:39   ` David Miller
2007-06-29 10:54     ` Jeff Garzik
2007-06-28 16:21 ` [PATCH 3/3] NET: [SCHED] Qdisc changes and sch_rr added for multiqueue PJ Waskiewicz
2007-06-28 16:35   ` Patrick McHardy
2007-06-28 16:43     ` Waskiewicz Jr, Peter P
2007-06-28 16:46       ` Patrick McHardy
2007-06-28 16:50         ` Waskiewicz Jr, Peter P
2007-06-28 16:53           ` Patrick McHardy
2007-06-28 16:50     ` Patrick McHardy
2007-06-28 17:13   ` Patrick McHardy
2007-06-28 19:04     ` Waskiewicz Jr, Peter P
2007-06-28 19:17       ` Patrick McHardy
2007-06-28 19:21         ` Waskiewicz Jr, Peter P
2007-06-28 19:24           ` Patrick McHardy
2007-06-28 19:27             ` Waskiewicz Jr, Peter P
2007-06-29  4:20             ` David Miller
2007-06-29  8:45               ` Waskiewicz Jr, Peter P
2007-06-29 11:43               ` Multiqueue and virtualization WAS(Re: " jamal
2007-06-29 11:59                 ` Patrick McHardy
2007-06-29 12:54                   ` jamal
2007-06-29 13:08                     ` Patrick McHardy
2007-06-29 13:19                       ` jamal
2007-06-29 15:33                       ` Ben Greear [this message]
2007-06-29 15:58                         ` Patrick McHardy
2007-06-29 16:16                           ` Ben Greear
2007-06-29 21:36                         ` David Miller
2007-06-30  7:51                           ` Benny Amorsen
2007-06-29 21:31                     ` David Miller
2007-06-30  1:30                       ` jamal
2007-06-30  4:35                         ` David Miller
2007-06-30 14:52                           ` jamal
2007-06-30 20:33                             ` David Miller
2007-07-03 12:42                               ` jamal
2007-07-03 21:24                                 ` David Miller
2007-07-04  2:20                                   ` jamal
2007-07-06  7:32                                     ` Rusty Russell
2007-07-06 14:39                                       ` jamal
2007-07-06 15:59                                         ` James Chapman
2007-07-08  2:30                                         ` Rusty Russell
2007-07-08  6:03                                         ` David Miller
2007-06-30 14:33               ` Patrick McHardy
2007-06-30 14:37                 ` Waskiewicz Jr, Peter P
2007-06-28 17:57 ` [CORE] Stack changes to add multiqueue hardware support API Patrick McHardy
2007-06-28 17:57 ` [SCHED] Qdisc changes and sch_rr added for multiqueue Patrick McHardy

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