From: Stephen Hemminger <stephen@networkplumber.org>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: Olivier Matz <olivier.matz@6wind.com>,
Andrew Rybchenko <arybchenko@solarflare.com>,
Yongseok Koh <yskoh@mellanox.com>,
wenzhuo.lu@intel.com, jingjing.wu@intel.com, dev@dpdk.org,
konstantin.ananyev@intel.com, adrien.mazarguil@6wind.com,
nelio.laranjeiro@6wind.com
Subject: Re: [dpdk-dev] [PATCH v4 1/2] mbuf: support attaching external buffer to mbuf
Date: Wed, 25 Apr 2018 08:06:29 -0700 [thread overview]
Message-ID: <20180425080629.7b2a30da@xeon-e3> (raw)
In-Reply-To: <1963503.R6hUdDjUTB@xps>
On Tue, 24 Apr 2018 22:22:45 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:
> > >
> > > I guess the problem that it changes INDIRECT semantics since EXTBUF
> > > is added as well. I think strictly speaking it is an API change.
> > > Is it OK to make it without announcement?
> >
> > In any case, there will be an ABI change, because an application
> > compiled for 18.02 will not be able to handle these new kind of
> > mbuf.
> >
> > So unfortunatly yes, I think this kind of changes should first be
> > announced.
> >
> > Thomas, what do you think?
>
> What is the impact for the application developer?
> Is there something to change in the application after this patch?
Maybe the use of external buffers should be negotiated as a receiver
flag (per queue) in the device driver. If device wants external buffers
it sets that in capability flag, and only uses it application requests
it. This allows old applications to work with no semantic surprises.
next prev parent reply other threads:[~2018-04-25 15:06 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-10 1:25 [dpdk-dev] [PATCH v1 0/6] net/mlx5: add Multi-Packet Rx support Yongseok Koh
2018-03-10 1:25 ` [dpdk-dev] [PATCH v1 1/6] mbuf: add buffer offset field for flexible indirection Yongseok Koh
2018-03-10 1:25 ` [dpdk-dev] [PATCH v1 2/6] net/mlx5: separate filling Rx flags Yongseok Koh
2018-03-10 1:25 ` [dpdk-dev] [PATCH v1 3/6] net/mlx5: add a function to rdma-core glue Yongseok Koh
2018-03-12 9:13 ` Nélio Laranjeiro
2018-03-10 1:25 ` [dpdk-dev] [PATCH v1 4/6] net/mlx5: add Multi-Packet Rx support Yongseok Koh
2018-03-12 9:20 ` Nélio Laranjeiro
2018-03-10 1:25 ` [dpdk-dev] [PATCH v1 5/6] net/mlx5: release Tx queue resource earlier than Rx Yongseok Koh
2018-03-10 1:25 ` [dpdk-dev] [PATCH v1 6/6] app/testpmd: conserve mbuf indirection flag Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 0/6] net/mlx5: add Multi-Packet Rx support Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 1/6] mbuf: add buffer offset field for flexible indirection Yongseok Koh
2018-04-03 8:26 ` Olivier Matz
2018-04-04 0:12 ` Yongseok Koh
2018-04-09 16:04 ` Olivier Matz
2018-04-10 1:59 ` Yongseok Koh
2018-04-11 0:25 ` Ananyev, Konstantin
2018-04-11 5:33 ` Yongseok Koh
2018-04-11 11:39 ` Ananyev, Konstantin
2018-04-11 14:02 ` Andrew Rybchenko
2018-04-11 17:18 ` Yongseok Koh
2018-04-11 17:08 ` Yongseok Koh
2018-04-12 16:34 ` Ananyev, Konstantin
2018-04-12 18:58 ` Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 2/6] net/mlx5: separate filling Rx flags Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 3/6] net/mlx5: add a function to rdma-core glue Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 4/6] net/mlx5: add Multi-Packet Rx support Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 5/6] net/mlx5: release Tx queue resource earlier than Rx Yongseok Koh
2018-04-02 18:50 ` [dpdk-dev] [PATCH v2 6/6] app/testpmd: conserve mbuf indirection flag Yongseok Koh
2018-04-19 1:11 ` [dpdk-dev] [PATCH v3 1/2] mbuf: support attaching external buffer to mbuf Yongseok Koh
2018-04-19 1:11 ` [dpdk-dev] [PATCH v3 2/2] app/testpmd: conserve offload flags of mbuf Yongseok Koh
2018-04-23 11:53 ` [dpdk-dev] [PATCH v3 1/2] mbuf: support attaching external buffer to mbuf Ananyev, Konstantin
2018-04-24 2:04 ` Yongseok Koh
2018-04-25 13:16 ` Ananyev, Konstantin
2018-04-25 16:44 ` Yongseok Koh
2018-04-25 18:05 ` Ananyev, Konstantin
2018-04-23 16:18 ` Olivier Matz
2018-04-24 1:29 ` Yongseok Koh
2018-04-24 15:36 ` Olivier Matz
2018-04-24 1:38 ` [dpdk-dev] [PATCH v4 " Yongseok Koh
2018-04-24 1:38 ` [dpdk-dev] [PATCH v4 2/2] app/testpmd: conserve offload flags of mbuf Yongseok Koh
2018-04-24 5:01 ` [dpdk-dev] [PATCH v4 1/2] mbuf: support attaching external buffer to mbuf Stephen Hemminger
2018-04-24 11:47 ` Yongseok Koh
2018-04-24 12:28 ` Andrew Rybchenko
2018-04-24 16:02 ` Olivier Matz
2018-04-24 18:21 ` [dpdk-dev] ***Spam*** " Andrew Rybchenko
2018-04-24 19:15 ` [dpdk-dev] " Olivier Matz
2018-04-24 20:22 ` Thomas Monjalon
2018-04-24 21:53 ` Yongseok Koh
2018-04-24 22:15 ` Thomas Monjalon
2018-04-25 8:21 ` Olivier Matz
2018-04-25 15:06 ` Stephen Hemminger [this message]
2018-04-24 23:34 ` Yongseok Koh
2018-04-25 14:45 ` Andrew Rybchenko
2018-04-25 17:40 ` Yongseok Koh
2018-04-25 8:28 ` Olivier Matz
2018-04-25 9:08 ` Yongseok Koh
2018-04-25 9:19 ` Yongseok Koh
2018-04-25 20:00 ` Olivier Matz
2018-04-25 22:54 ` Yongseok Koh
2018-04-24 22:30 ` Yongseok Koh
2018-04-25 2:53 ` [dpdk-dev] [PATCH v5 " Yongseok Koh
2018-04-25 2:53 ` [dpdk-dev] [PATCH v5 2/2] app/testpmd: conserve offload flags of mbuf Yongseok Koh
2018-04-25 13:31 ` [dpdk-dev] [PATCH v5 1/2] mbuf: support attaching external buffer to mbuf Ananyev, Konstantin
2018-04-25 17:06 ` Yongseok Koh
2018-04-25 17:23 ` Ananyev, Konstantin
2018-04-25 18:02 ` Yongseok Koh
2018-04-25 18:22 ` Yongseok Koh
2018-04-25 18:30 ` Yongseok Koh
2018-04-26 1:10 ` [dpdk-dev] [PATCH v6 " Yongseok Koh
2018-04-26 1:10 ` [dpdk-dev] [PATCH v6 2/2] app/testpmd: conserve offload flags of mbuf Yongseok Koh
2018-04-26 11:39 ` [dpdk-dev] [PATCH v6 1/2] mbuf: support attaching external buffer to mbuf Ananyev, Konstantin
2018-04-26 16:05 ` Andrew Rybchenko
2018-04-26 16:10 ` Thomas Monjalon
2018-04-26 19:42 ` Olivier Matz
2018-04-26 19:58 ` Thomas Monjalon
2018-04-26 20:07 ` Olivier Matz
2018-04-26 20:24 ` Thomas Monjalon
2018-04-26 17:18 ` Yongseok Koh
2018-04-26 19:45 ` Olivier Matz
2018-04-27 0:01 ` [dpdk-dev] [PATCH v7 " Yongseok Koh
2018-04-27 0:01 ` [dpdk-dev] [PATCH v7 2/2] app/testpmd: conserve offload flags of mbuf Yongseok Koh
2018-04-27 8:00 ` Andrew Rybchenko
2018-04-27 7:22 ` [dpdk-dev] [PATCH v7 1/2] mbuf: support attaching external buffer to mbuf Andrew Rybchenko
2018-04-27 17:22 ` [dpdk-dev] [PATCH v8 " Yongseok Koh
2018-04-27 17:22 ` [dpdk-dev] [PATCH v8 2/2] app/testpmd: conserve offload flags of mbuf Yongseok Koh
2018-04-27 18:09 ` [dpdk-dev] [PATCH v8 1/2] mbuf: support attaching external buffer to mbuf Thomas Monjalon
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