From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Nobuhiro MIKI <nmiki@yahoo-corp.jp>, <keith.wiles@intel.com>
Cc: <dev@dpdk.org>, <i.maximets@ovn.org>, <dmarchan@redhat.com>
Subject: Re: [PATCH v3 1/1] net/tap: add a check that Rx/Tx have the same num of queues
Date: Wed, 26 Jan 2022 16:19:49 +0000 [thread overview]
Message-ID: <073eb2f6-baeb-d3c6-6381-96a05a69a6a8@intel.com> (raw)
In-Reply-To: <20220119074316.1094-1-nmiki@yahoo-corp.jp>
On 1/19/2022 7:43 AM, Nobuhiro MIKI wrote:
> Users can create the desired number of RxQ and TxQ in DPDK. For
> example, if the number of RxQ = 2 and the number of TxQ = 5,
> a total of 8 file descriptors will be created for a tap device,
> including RxQ, TxQ, and one for keepalive. The RxQ and TxQ
> with the same ID are paired by dup(2).
>
> In this scenario, Kernel will have 3 RxQ where packets are
> incoming but not read. The reason for this is that there are only
> 2 RxQ that are polled by DPDK, while there are 5 queues in Kernel.
> This patch add a checking if DPDK has appropriate numbers of
> queues to avoid unexpected packet drop.
>
> Signed-off-by: Nobuhiro MIKI <nmiki@yahoo-corp.jp>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Applied to dpdk-next-net/main, thanks.
prev parent reply other threads:[~2022-01-26 16:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-19 7:43 Nobuhiro MIKI
2022-01-26 16:19 ` Ferruh Yigit [this message]
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