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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Ansar Kannankattil <ansarkannankat@gmail.com>, <dev@dpdk.org>
Subject: Re: Can I use rte_pktmbuf_chain to chain multiple mbuffs for calling only single tx_eth_burst API
Date: Wed, 9 Feb 2022 22:18:24 +0000	[thread overview]
Message-ID: <fa4dcbb4-00aa-8691-69a7-9de173d3698d@intel.com> (raw)
In-Reply-To: <CAPA_rBexb_JKhGtxp4uQ1M-5F0RXpvpOHxDCso5VxmjRxkL1eA@mail.gmail.com>

On 2/9/2022 6:03 PM, Ansar Kannankattil wrote:
> Hi
> My intention is to decrease the number of rte_tx_eth_burst calls, I know that mentioning nb_pkts will result in sending multiple packets in a single call.
> But providing nb_pkts=1 and posting a head mbuff having number of mbuffs linked with it will results sending multiple packets

If driver supports, you can do it.
Driver should expose this capability via RTE_ETH_TX_OFFLOAD_MULTI_SEGS flag,
in 'dev_info->tx_offload_capa'.

> If not, what is the use case of linking multiple mbuffs together

It is also used in Rx path (again if driver supports).

  parent reply	other threads:[~2022-02-09 22:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-09 18:03 Ansar Kannankattil
2022-02-09 20:56 ` Stephen Hemminger
2022-02-09 22:18 ` Ferruh Yigit [this message]
2022-02-09 22:46   ` Stephen Hemminger
2022-02-10  8:56     ` Ferruh Yigit
2022-02-10 10:37       ` Ansar Kannankattil
2022-02-10 10:43         ` Ferruh Yigit
2022-02-10 11:36         ` Bruce Richardson

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