DPDK patches and discussions
 help / color / mirror / Atom feed
From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Matan Azrad <matan@mellanox.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: Thomas Monjalon <thomas@monjalon.net>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	Andrew Rybchenko <arybchenko@solarflare.com>,
	Olivier Matz <olivier.matz@6wind.com>
Subject: Re: [dpdk-dev] [PATCH 2/2] doc: announce new mbuf field for LRO
Date: Tue, 6 Aug 2019 15:58:56 +0000	[thread overview]
Message-ID: <2601191342CEEE43887BDE71AB9772580168A62AC0@irsmsx105.ger.corp.intel.com> (raw)
In-Reply-To: <1565103383-23864-2-git-send-email-matan@mellanox.com>



> -----Original Message-----
> From: Matan Azrad [mailto:matan@mellanox.com]
> Sent: Tuesday, August 6, 2019 3:56 PM
> To: dev@dpdk.org
> Cc: Thomas Monjalon <thomas@monjalon.net>; Yigit, Ferruh <ferruh.yigit@intel.com>; Andrew Rybchenko <arybchenko@solarflare.com>;
> Ananyev, Konstantin <konstantin.ananyev@intel.com>; Olivier Matz <olivier.matz@6wind.com>
> Subject: [PATCH 2/2] doc: announce new mbuf field for LRO
> 
> The API breakage is because the ``tso_segsz`` field was documented for
> LRO.
> 
> The ``tso_segsz`` field in mbuf indicates the size of each segment in
> the LRO packet in Rx path and should be provided by the LRO packet
> port.
> 
> While the generic LRO packet may aggregate different segments sizes in
> one packet, it is impossible to expose this information for each segment
> by one field and it doesn't make sense to expose all the segments sizes
> in the mbuf.
> 
> A new field may be added as union with the above field to expose the
> number of segments aggregated in the LRO packet.
> 
> Signed-off-by: Matan Azrad <matan@mellanox.com>
> ---
>  doc/guides/rel_notes/deprecation.rst | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
> index c0cd9bc..e826b69 100644
> --- a/doc/guides/rel_notes/deprecation.rst
> +++ b/doc/guides/rel_notes/deprecation.rst
> @@ -45,6 +45,10 @@ Deprecation Notices
>    - ``eal_parse_pci_DomBDF`` replaced by ``rte_pci_addr_parse``
>    - ``rte_eal_compare_pci_addr`` replaced by ``rte_pci_addr_cmp``
> 
> +* mbuf: Remove ``tso_segsz`` mbuf field providing for LRO support. Use union
> +  block for the field memory to be shared with a new field ``lro_segs_n``
> +  indicates the number of segments aggregated in the LRO packet.
> +

Wonder how the upper layer will use that information (except for stats)?
Could you guys provide any examples?
Also what PMD should do if HW does supports LRO, but doesn't provide that information? 
Konstantin  

>  * dpaa2: removal of ``rte_dpaa2_memsegs`` structure which has been replaced
>    by a pa-va search library. This structure was earlier being used for holding
>    memory segments used by dpaa2 driver for faster pa->va translation. This
> --
> 1.8.3.1


  reply	other threads:[~2019-08-06 15:59 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-06 14:56 [dpdk-dev] [PATCH 1/2] doc: announce ethdev ABI change for LRO fields Matan Azrad
2019-08-06 14:56 ` [dpdk-dev] [PATCH 2/2] doc: announce new mbuf field for LRO Matan Azrad
2019-08-06 15:58   ` Ananyev, Konstantin [this message]
2019-08-06 18:50     ` Matan Azrad
2019-08-07 10:17       ` Ananyev, Konstantin
2019-08-07 12:35         ` Matan Azrad
2019-08-07 14:18           ` Ananyev, Konstantin
2019-08-08 10:16             ` Matan Azrad
2019-08-08 10:48               ` Ananyev, Konstantin
2019-08-08 11:16                 ` Matan Azrad
2019-08-08 16:26                   ` Ananyev, Konstantin
2019-08-06 18:17   ` Andrew Rybchenko
2019-08-10 21:31     ` Thomas Monjalon
2020-05-24 23:41       ` Thomas Monjalon
2020-06-02  6:49         ` Matan Azrad
2020-07-27  8:00           ` Olivier Matz
2020-07-27  8:41             ` Matan Azrad
2020-07-27  9:07               ` Olivier Matz
2023-06-12 16:38   ` Stephen Hemminger
2019-08-06 15:27 ` [dpdk-dev] [PATCH 1/2] doc: announce ethdev ABI change for LRO fields Andrew Rybchenko
2019-08-10 21:40   ` Thomas Monjalon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=2601191342CEEE43887BDE71AB9772580168A62AC0@irsmsx105.ger.corp.intel.com \
    --to=konstantin.ananyev@intel.com \
    --cc=arybchenko@solarflare.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=matan@mellanox.com \
    --cc=olivier.matz@6wind.com \
    --cc=thomas@monjalon.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).