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From: Thomas Monjalon <thomas@monjalon.net>
To: "Hu, Jiayu" <jiayu.hu@intel.com>
Cc: stable@dpdk.org, "Kovacevic, Marko" <marko.kovacevic@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v6] doc: add GRO limitations in prog_guide
Date: Thu, 17 Jan 2019 23:08:07 +0100	[thread overview]
Message-ID: <6102338.UvBRKH1dAI@xps> (raw)
In-Reply-To: <6DC05C7C5F25994B81B3F2F214251F660207DB1F@IRSMSX104.ger.corp.intel.com>

17/01/2019 14:55, Kovacevic, Marko:
> > +GRO Library Limitations
> > +-----------------------
> > +
> > +- GRO library uses MBUF->l2_len/l3_len/l4_len/outer_l2_len/
> > +  outer_l3_len/packet_type to get protocol headers for the
> > +  input packet, rather than parsing the packet header. Therefore,
> > +  before call GRO APIs to merge packets, user applications
> > +  must set MBUF->l2_len/l3_len/l4_len/outer_l2_len/outer_l3_len/
> > +  packet_type to the same values as the protocol headers of the
> > +  packet.
> > +
> > +- GRO library doesn't support to process the packets with IPv4
> > +  Options or VLAN tagged.
> > +
> > +- GRO library just supports to process the packet organized
> > +  in a single MBUF. If the input packet consists of multiple
> > +  MBUFs (i.e. chained MBUFs), GRO reassembly behaviors are
> > +  unknown.
> > --
> 
> Would it be better said like this ??
> 
> - GRO library uses different MBUF->packet_types for example
>   ``l2_len, l3_len, l4_len, outer_l2_len, outer_l3_len`` to get protocol
>   headers for the input packet, rather than parsing the packet header.
>   Therefore, before calling GRO APIs to merge packets, user applications
>   must set MBUF->packet_type to the same values as the protocol headers of
>   the packet.

packet_type is really a field in mbuf.
I think the wording from Jiayu is more correct.

      reply	other threads:[~2019-01-17 22:08 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1545107119-85376-1-git-send-email-jiayu.hu@intel.com>
2018-12-26  4:04 ` [dpdk-stable] [PATCH v2] doc: add GRO API " Jiayu Hu
2019-01-04  7:16   ` [dpdk-stable] [PATCH v3] " Jiayu Hu
2019-01-09  3:00     ` [dpdk-stable] [PATCH V4] " Jiayu Hu
2019-01-09  4:25       ` [dpdk-stable] [dpdk-dev] " Varghese, Vipin
2019-01-09  4:27         ` Varghese, Vipin
2019-01-09  5:18           ` Hu, Jiayu
2019-01-09  8:19       ` [dpdk-stable] [PATCH v5] " Jiayu Hu
2019-01-09 18:20         ` Stephen Hemminger
2019-01-09 18:40           ` Ananyev, Konstantin
2019-01-09 21:31             ` [dpdk-stable] [dpdk-dev] " Morten Brørup
2019-01-10  8:06               ` Hu, Jiayu
2019-01-10  8:28                 ` Morten Brørup
2019-01-16  2:13         ` [dpdk-stable] [PATCH v6] doc: add GRO " Jiayu Hu
2019-01-16  9:50           ` Ananyev, Konstantin
2019-01-17 22:08             ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2019-01-17 13:55           ` Kovacevic, Marko
2019-01-17 22:08             ` Thomas Monjalon [this message]

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