From: Eric Dumazet <dada1@cosmosbay.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: [RFC,PATCH] loopback: calls netif_receive_skb() instead of netif_rx()
Date: Mon, 31 Mar 2008 08:38:22 +0200 [thread overview]
Message-ID: <47F086DE.20306@cosmosbay.com> (raw)
In-Reply-To: <20080329.165415.86797572.davem@davemloft.net>
David Miller a écrit :
> From: Eric Dumazet <dada1@cosmosbay.com>
> Date: Sat, 29 Mar 2008 09:18:03 +0100
>
>> BTW, can loopback_xmit() be called on an interrupt stack ?
>
> Absolutely, softirq processes TCP data, ACK goes out in
> softirq context.
yes, ICMP messages (if any are sent) too.
>
> Softirqs run on interrupt stacks just as hardirqs do.
>
Well, it depends.
Not on x86_32 with 8K stacks, and some other arches.
do_softirq() can use the underlying stack too.
Thank you
next prev parent reply other threads:[~2008-03-31 6:38 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-21 18:51 [RFC,PATCH] loopback: calls netif_receive_skb() instead of netif_rx() Eric Dumazet
2008-02-21 20:14 ` Daniel Lezcano
2008-02-21 23:19 ` Eric Dumazet
2008-02-22 10:19 ` Daniel Lezcano
2008-02-27 2:21 ` David Miller
2008-02-27 7:20 ` Jarek Poplawski
2008-02-27 7:23 ` David Miller
2008-02-27 7:34 ` Jarek Poplawski
2008-03-01 10:26 ` Eric Dumazet
2008-03-04 4:55 ` David Miller
2008-03-04 5:15 ` Stephen Hemminger
2008-03-04 6:27 ` Eric Dumazet
2008-03-23 10:29 ` David Miller
2008-03-23 18:48 ` Eric Dumazet
2008-03-23 19:15 ` Andi Kleen
2008-03-29 1:36 ` David Miller
2008-03-29 8:18 ` Eric Dumazet
2008-03-29 23:54 ` David Miller
2008-03-31 6:38 ` Eric Dumazet [this message]
2008-03-31 9:48 ` Ingo Molnar
2008-03-31 10:01 ` Eric Dumazet
2008-03-31 10:12 ` Ingo Molnar
2008-04-01 9:19 ` Eric Dumazet
2008-04-03 14:06 ` Pavel Machek
2008-04-03 16:19 ` Eric Dumazet
2008-03-31 10:08 ` David Miller
2008-03-31 10:44 ` Ingo Molnar
2008-03-31 11:02 ` David Miller
2008-03-31 11:36 ` poor network loopback performance and scalability (was: Re: [RFC,PATCH] loopback: calls netif_receive_skb() instead of netif_rx()) Ingo Molnar
2008-04-21 3:24 ` Herbert Xu
2008-04-21 3:38 ` poor network loopback performance and scalability David Miller
2008-04-21 8:11 ` Ingo Molnar
2008-04-21 8:16 ` David Miller
2008-04-21 10:19 ` Herbert Xu
2008-04-21 10:22 ` David Miller
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