From: "Xing, Beilei" <beilei.xing@intel.com>
To: "Wu, Jingjing" <jingjing.wu@intel.com>,
"Mcnamara, John" <john.mcnamara@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"Wu, Jingjing" <jingjing.wu@intel.com>,
"Zhang, Helin" <helin.zhang@intel.com>
Subject: Re: [dpdk-dev] [PATCH] doc: add limitations for i40e PMD
Date: Tue, 13 Sep 2016 09:48:55 +0000 [thread overview]
Message-ID: <94479800C636CB44BD422CB454846E012E938DFE@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <1473128228-837-1-git-send-email-jingjing.wu@intel.com>
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Jingjing Wu
> Sent: Tuesday, September 6, 2016 10:17 AM
> To: Mcnamara, John <john.mcnamara@intel.com>
> Cc: dev@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>; Zhang, Helin
> <helin.zhang@intel.com>
> Subject: [dpdk-dev] [PATCH] doc: add limitations for i40e PMD
>
> This patch adds "Limitations or Known issues" section for i40e PMD, including
> two items:
> 1. MPLS packet classification on X710/XL710 2. 16 Byte Descriptor cannot be
> used on DPDK VF
>
> Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
> ---
> doc/guides/nics/i40e.rst | 33 +++++++++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst index
> 4d12b10..6df0f7a 100644
> --- a/doc/guides/nics/i40e.rst
> +++ b/doc/guides/nics/i40e.rst
> @@ -411,3 +411,36 @@ configuration passed on the EAL command line.
>
> The floating VEB functionality requires a NIC firmware version of 5.0 or
> greater.
> +
> +
> +Limitations or Known issues
> +---------------------------
> +
> +MPLS packet classification on X710/XL710
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +Before NIC firmware version of 5.0, MPLS packet cannot be recognized by
> NIC.
> +The L2 Payload flow type in flow director can be used to classify MPLS
> +packet by the command in testpmd like:
> +
> + testpmd> flow_director_filter 0 mode IP add flow l2_payload ether \
> + 0x8847 flexbytes () fwd pf queue <N> fd_id <M>
> +
> +In the NIC firmware whose version is 5.0 or greater, very limited MPLS
> +support is added: Native MPLS skip is implemented, that is, packet type
> +can be recognized like MPLS header is skipped, while no new packet type
> +and no more meta data is extracted from MPLS header. With this change,
> +L2 Payload flow type in flow director cannot be used to classify MPLS packet
> as previous.
> +Meanwhile, Ethertype filter can be used to classify MPLS packet by the
> +command in testpmd like:
> +
> + testpmd> ethertype_filter 0 add mac_ignr 00:00:00:00:00:00 ethertype \
> + 0x8847 fwd queue <M>
> +
> +16 Byte Descriptor cannot be used on DPDK VF
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +If Linux i40e kerel driver is used as host driver, while DPDK i40e PMD
one typo: kerel -> kernel
> +is used as VF driver, DPDK cannot choose 16 byte descriptor receive
> +descriptor. That is to say, user should keep
> +"CONFIG_RTE_LIBRTE_I40E_16BYTE_RX_DESC=n" in config file.
> --
> 2.4.11
next prev parent reply other threads:[~2016-09-13 9:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-06 2:17 Jingjing Wu
2016-09-13 9:48 ` Xing, Beilei [this message]
2016-09-16 17:06 ` [dpdk-dev] [PATCH v2] " Jingjing Wu
2016-09-26 15:32 ` Mcnamara, John
2016-09-30 6:46 ` [dpdk-dev] [PATCH v3] " Jingjing Wu
2016-09-30 15:09 ` Mcnamara, John
2016-10-12 15:17 ` Bruce Richardson
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