Re: [dts] [patch] ironpond , twinpond and springfountain 's mbuf is 2048, not 1024

["Tu, LijuanX A" <lijuanx.a.tu@intel.com>]

I am not sure why too,but  test_plan_scatter may give us some inofmation:

Configuring the size of mbuf data buffers
=========================================
The default size of the mbuf data buffer is 2048 so that a full 1518-byte
(CRC included) Ethernet frame can be stored in a mono-segment packet.

-----Original Message-----
From: Liu, Yong 
Sent: Tuesday, October 20, 2015 11:19 AM
To: Qiu, Michael
Cc: Tu, LijuanX A; dts@dpdk.org
Subject: RE: [dts] [patch] ironpond , twinpond and springfountain 's mbuf is 2048, not 1024

I'm not sure why use 2048 for some NICs. Anybody known about this?
Scatter feature is used when received packets over the size of mbuf. 
I think 1024 and 2048 should be the same to measure this feature.

> -----Original Message-----
> From: Qiu, Michael
> Sent: Tuesday, October 20, 2015 11:05 AM
> To: Liu, Yong
> Cc: Tu, LijuanX A; dts@dpdk.org
> Subject: Re: [dts] [patch] ironpond , twinpond and springfountain 's 
> mbuf is 2048, not 1024
> 
> I have a question, which nic's default mbuf is 1024？
> Thanks,
> Michael
> 
> 发自我的 iPhone
> 
> > 在 2015年10月20日，上午10:23，Liu, Yong <yong.liu@intel.com> 写道：
> >
> > Applied. Thx.
> >
> >> -----Original Message-----
> >> From: dts [mailto:dts-bounces@dpdk.org] On Behalf Of lijuan tu
> >> Sent: Thursday, October 15, 2015 12:25 PM
> >> To: dts@dpdk.org
> >> Subject: [dts] [patch] ironpond , twinpond and springfountain 's 
> >> mbuf
> is
> >> 2048, not 1024
> >>
> >> Signed-off-by: lijuan tu <lijuanx.a.tu@intel.com>
> >> ---
> >> tests/TestSuite_scatter.py | 2 +-
> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/tests/TestSuite_scatter.py 
> >> b/tests/TestSuite_scatter.py index abb1a08..1bec2c8 100644
> >> --- a/tests/TestSuite_scatter.py
> >> +++ b/tests/TestSuite_scatter.py
> >> @@ -55,7 +55,7 @@ class TestScatter(TestCase):
> >>         # Verify that enough ports are available
> >>         self.verify(len(dutPorts) >= 2, "Insufficient ports")
> >>         self.pmdout = PmdOutput(self.dut)
> >> -        if self.nic in ["niantic", "fortville_eagle",
> "fortville_spirit",
> >> "fortville_spirit_single", "redrockcanyou"]:
> >> +        if self.nic in ["niantic", "fortville_eagle",
> "fortville_spirit",
> >> "fortville_spirit_single", "redrockcanyou", "ironpond", "twinpond",
> >> "springfountain"]:
> >>             self.mbsize = 2048
> >>         else:
> >>             self.mbsize = 1024
> >> --
> >> 2.1.0
> >