Re: [PATCH v2] tcp: splice as many packets as possible at once

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To: Herbert Xu <herbert@...>
Cc: David Miller <davem@...>, <zbr@...>, <w@...>, <dada1@...>, <ben@...>, <mingo@...>, <linux-kernel@...>, <netdev@...>, <jens.axboe@...>
Date: Friday, February 6, 2009 - 6:58 am

On Fri, Feb 06, 2009 at 09:28:22PM +1100, Herbert Xu wrote:

?? I mean this 128 byte chunk would be hard to reuse after copying
to skb->data, and if reused, we could miss this for some NICs on TX,
so the whole packed would need a copy.

BTW, David mentioned something simple like sk_sndmsg_page would be
enough, but I guess not for these non-SG NICs. We have to allocate
bigger chunks for them, so more fragmentation to handle.

Cheers,
Jarek P.
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Messages in current thread:
[PATCH] tcp: splice as many packets as possible at once, Willy Tarreau, (Thu Jan 8, 1:30 pm)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Fri Jan 9, 6:42 pm)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Sun Jan 11, 8:58 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Sun Jan 11, 9:35 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Sun Jan 11, 12:05 pm)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Tue Jan 13, 8:13 pm)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Tue Jan 13, 8:22 pm)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 4:53 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Tue Jan 20, 4:37 am)
Re: [PATCH v2] tcp: splice as many packets as possible at once, Jarek Poplawski, (Fri Feb 6, 6:58 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Fri Jan 16, 2:51 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Tue Jan 20, 8:11 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Tue Jan 20, 10:06 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Mon Jan 19, 4:40 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Mon Jan 26, 3:59 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 5:54 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 8:15 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 8:06 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 5:42 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 6:47 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 7:40 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Jarek Poplawski, (Wed Jan 14, 7:45 am)
Re: [PATCH] tcp: splice as many packets as possible at once, Evgeniy Polyakov, (Fri Jan 9, 7:01 pm)
[PATCH] tcp: splice as many packets as possible at once, Willy Tarreau, (Thu Jan 8, 4:16 pm)