From: Bruce Richardson <bruce.richardson@intel.com>
To: Clarylin L <clearasu@gmail.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] multi-segment mbuf
Date: Tue, 22 Mar 2016 10:27:40 +0000 [thread overview]
Message-ID: <20160322102740.GC19268@bricha3-MOBL3> (raw)
In-Reply-To: <CAKj5MjvwNx9rU-hp_-bpAKss4NVmDM7EAe6WOFJLjSO-UD--kA@mail.gmail.com>
On Mon, Mar 21, 2016 at 04:34:50PM -0700, Clarylin L wrote:
> I am trying multi-segment mbuf, but it seems not working.
>
> On my target host, the mbuf size is set to 2048 and I am trying to send
> large packet to it (say 2500 bytes without fragmentation) from another
> host. I enabled both jumbo_frame and enable_scatter for the port. But I saw
> on the target only one mbuf is received with data_len equal to 2500 (it's
> supposed to be a two-mbuf chain). Although mbuf itself is not working as
> expected, ping between two hosts succeeded (large ping size; no
> fragmentation).
>
> 1. my mbuf size is only 2048. how can it support receiving such large
> packet in one mbuf?
>
> 2.how to make it work as expected (enable multi-segment mbuf and receive
> using mbuf chain when needed)?
>
> Appreciate your help.
Hi,
when you get the single mbuf with data_len == 2500, what is the buf_len value
reported as?
/Bruce
next prev parent reply other threads:[~2016-03-22 10:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-21 23:34 Clarylin L
2016-03-22 10:27 ` Bruce Richardson [this message]
2016-03-22 20:36 ` Clarylin L
2016-03-22 22:13 ` Stephen Hemminger
2016-03-22 22:42 ` Clarylin L
2016-03-22 22:58 ` Clarylin L
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