From owner-freebsd-net@FreeBSD.ORG  Thu Mar 20 11:36:16 2014
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Date: Thu, 20 Mar 2014 12:36:13 +0100
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Subject: Re: some problem about netmap
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: mstian88 <mstian88@163.com>
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what os, device driver ?
are you using emulated or native netmap mode ?
Do you have tso and receive side coalescing enabled ?
(you can disable them with ethtool).

cheers
luigi



On Thu, Mar 20, 2014 at 11:03 AM, mstian88 <mstian88@163.com> wrote:

> ./pkt-gen -i eth1 -f rx -X
> the print info shows slot->len is 2048?  why?
> the packets was sended with tcpreplay.
> when Multiple packets len is 1514, pkt-gen receive avial >1,  the
> slot->len is 2048
>
>
> like this:
>
> [2213]:slotlen[1514],curidx[189],bufidx[24767],avail[3],iwhile[475],ifor[16],buf_ofs[5603328],rings[32]
>
> [2214]:slotlen[2048],curidx[190],bufidx[24768],avail[2],iwhile[475],ifor[16],buf_ofs[5603328],rings[32]
>
> [2215]:slotlen[926],curidx[191],bufidx[24769],avail[1],iwhile[475],ifor[16],buf_ofs[5603328],rings[32]
>
> [2216]:slotlen[1514],curidx[192],bufidx[24770],avail[1],iwhile[476],ifor[16],buf_ofs[5603328],rings[32]
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