[dpdk-dev] [PATCH v2 3/4] common_base: extend RTE_MAX_ETHPORTS from 32 to 1024
Ananyev, Konstantin
konstantin.ananyev at intel.com
Mon Sep 4 11:27:11 CEST 2017
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Yao, Lei A
> Sent: Monday, September 4, 2017 8:46 AM
> To: Yang, Zhiyong <zhiyong.yang at intel.com>; dev at dpdk.org
> Cc: thomas at monjalon.net; Yigit, Ferruh <ferruh.yigit at intel.com>; Wiles, Keith <keith.wiles at intel.com>; stephen at networkplumber.org;
> Yang, Zhiyong <zhiyong.yang at intel.com>
> Subject: Re: [dpdk-dev] [PATCH v2 3/4] common_base: extend RTE_MAX_ETHPORTS from 32 to 1024
>
>
>
> > -----Original Message-----
> > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Zhiyong Yang
> > Sent: Monday, September 4, 2017 1:58 PM
> > To: dev at dpdk.org
> > Cc: thomas at monjalon.net; Yigit, Ferruh <ferruh.yigit at intel.com>; Wiles,
> > Keith <keith.wiles at intel.com>; stephen at networkplumber.org; Yang,
> > Zhiyong <zhiyong.yang at intel.com>
> > Subject: [dpdk-dev] [PATCH v2 3/4] common_base: extend
> > RTE_MAX_ETHPORTS from 32 to 1024
> >
> > The reasons to modify RTE_MAX_ETHPORTS is the following.
> >
> > 1. RTE_MAX_ETHPORTS=32 by default has not met user's requirements
> > with development of virtualization technology. Some vdev users have
> > to modify the setting before the compiling.
> >
> > 2. port_id have been extended to 16 bits definition. But for many
> > samples such as testpmd, l3fwd, num of port is still limited to
> > RTE_MAX_ETHPORTS=32 by default. This may limit usage of 16 bits
> > port_id.
> >
> > So, it is necessary to enlarge RTE_MAX_ETHPORTS to more than 256.
> >
> > Signed-off-by: Zhiyong Yang <zhiyong.yang at intel.com>
> > ---
> > config/common_base | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/config/common_base b/config/common_base
> > index 5e97a08b6..dccc13e31 100644
> > --- a/config/common_base
> > +++ b/config/common_base
> > @@ -131,7 +131,7 @@ CONFIG_RTE_LIBRTE_KVARGS=y
> > #
> > CONFIG_RTE_LIBRTE_ETHER=y
> > CONFIG_RTE_LIBRTE_ETHDEV_DEBUG=n
> > -CONFIG_RTE_MAX_ETHPORTS=32
> > +CONFIG_RTE_MAX_ETHPORTS=1024
> > CONFIG_RTE_MAX_QUEUES_PER_PORT=1024
> > CONFIG_RTE_LIBRTE_IEEE1588=n
> > CONFIG_RTE_ETHDEV_QUEUE_STAT_CNTRS=16
> > --
> 2.13.3
> Hi, Zhiyong
>
> I met one issue for changing CONFIG_RTE_MAX_ETHPORTS to 1024.
> One process can only open 1024 file as maximum in common linux distribution,
> after practice, only 1009 socket file can be used for vdev device with testpmd
> sample.
ulimit -Sn 10000
?
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