[dpdk-dev] [PATCH] af_packet: allow configuring number of rings
Stephen Hemminger
stephen at networkplumber.org
Thu Feb 27 18:51:40 CET 2020
On Thu, 27 Feb 2020 17:20:45 +0000
Ferruh Yigit <ferruh.yigit at intel.com> wrote:
> On 2/24/2020 11:11 PM, Stephen Hemminger wrote:
> > The maximum number of rings in af_packet is hard coded as 16.
> > The user should be able to configure this as part of DPDK config.
> >
> > Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> > ---
> > config/common_base | 1 +
> > drivers/net/af_packet/rte_eth_af_packet.c | 3 +++
> > 2 files changed, 4 insertions(+)
> >
> > diff --git a/config/common_base b/config/common_base
> > index 6ea9c63cc36b..dd154a474b57 100644
> > --- a/config/common_base
> > +++ b/config/common_base
> > @@ -468,6 +468,7 @@ CONFIG_RTE_LIBRTE_VMXNET3_DEBUG_TX_FREE=n
> > # Compile software PMD backed by AF_PACKET sockets (Linux only)
> > #
> > CONFIG_RTE_LIBRTE_PMD_AF_PACKET=n
> > +CONFIG_RTE_PMD_AF_PACKET_MAX_RINGS=16
> >
>
> Not sure about adding a new config option for this.
>
> There is already "qpairs" devarg, allocating queues dynamically, instead of
> using a per-defined sized arrays, should enable removing
> 'RTE_PMD_AF_PACKET_MAX_RINGS' completely.
But the current driver does not allow qpairs > 16.
This is a config option to allow more.
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