From: "Xueming(Steven) Li" <xuemingl@mellanox.com>
To: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Cc: "Nélio Laranjeiro" <nelio.laranjeiro@6wind.com>,
"Shahaf Shuler" <shahafs@mellanox.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"Olivier Matz" <olivier.matz@6wind.com>
Subject: Re: [dpdk-dev] [PATCH v3 04/14] net/mlx5: support Rx tunnel type identification
Date: Tue, 17 Apr 2018 04:53:15 +0000 [thread overview]
Message-ID: <VI1PR05MB1678CE9E33BC5513008A08F8ACB70@VI1PR05MB1678.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20180416160243.GC4957@6wind.com>
> -----Original Message-----
> From: Adrien Mazarguil <adrien.mazarguil@6wind.com>
> Sent: Tuesday, April 17, 2018 12:03 AM
> To: Xueming(Steven) Li <xuemingl@mellanox.com>
> Cc: Nélio Laranjeiro <nelio.laranjeiro@6wind.com>; Shahaf Shuler <shahafs@mellanox.com>; dev@dpdk.org;
> Olivier Matz <olivier.matz@6wind.com>
> Subject: Re: [PATCH v3 04/14] net/mlx5: support Rx tunnel type identification
>
> On Mon, Apr 16, 2018 at 03:27:37PM +0000, Xueming(Steven) Li wrote:
> >
> >
> > > -----Original Message-----
> > > From: Adrien Mazarguil <adrien.mazarguil@6wind.com>
> > > Sent: Monday, April 16, 2018 9:48 PM
> > > To: Xueming(Steven) Li <xuemingl@mellanox.com>
> > > Cc: Nélio Laranjeiro <nelio.laranjeiro@6wind.com>; Shahaf Shuler
> > > <shahafs@mellanox.com>; dev@dpdk.org; Olivier Matz
> > > <olivier.matz@6wind.com>
> > > Subject: Re: [PATCH v3 04/14] net/mlx5: support Rx tunnel type
> > > identification
> > >
> > > On Mon, Apr 16, 2018 at 01:32:49PM +0000, Xueming(Steven) Li wrote:
> > > >
> > > > > -----Original Message-----
> > > > > From: Adrien Mazarguil <adrien.mazarguil@6wind.com>
> > > > > Sent: Monday, April 16, 2018 5:28 PM
> > > > > To: Xueming(Steven) Li <xuemingl@mellanox.com>
> > > > > Cc: Nélio Laranjeiro <nelio.laranjeiro@6wind.com>; Shahaf Shuler
> > > > > <shahafs@mellanox.com>; dev@dpdk.org; Olivier Matz
> > > > > <olivier.matz@6wind.com>
> > > > > Subject: Re: [PATCH v3 04/14] net/mlx5: support Rx tunnel type
> > > > > identification
> > > > >
> > > > > On Mon, Apr 16, 2018 at 08:05:13AM +0000, Xueming(Steven) Li wrote:
> > > > > >
> > > > > >
> > > > > > > -----Original Message-----
> > > > > > > From: Nélio Laranjeiro <nelio.laranjeiro@6wind.com>
> > > > > > > Sent: Monday, April 16, 2018 3:29 PM
> > > > > > > To: Xueming(Steven) Li <xuemingl@mellanox.com>
> > > > > > > Cc: Shahaf Shuler <shahafs@mellanox.com>; dev@dpdk.org;
> > > > > > > Olivier Matz <olivier.matz@6wind.com>; Adrien Mazarguil
> > > > > > > <adrien.mazarguil@6wind.com>
> > > > > > > Subject: Re: [PATCH v3 04/14] net/mlx5: support Rx tunnel
> > > > > > > type identification
> > > > > > >
> > > > > > > On Sat, Apr 14, 2018 at 12:57:58PM +0000, Xueming(Steven) Li wrote:
> > > > > > > > +Adrien
> > > > > > > >
> > > > > > > > > -----Original Message-----
> > > > > > > > > From: Nélio Laranjeiro <nelio.laranjeiro@6wind.com>
> > > > > > > > > Sent: Friday, April 13, 2018 9:03 PM
> > > > > > > > > To: Xueming(Steven) Li <xuemingl@mellanox.com>
> > > > > > > > > Cc: Shahaf Shuler <shahafs@mellanox.com>; dev@dpdk.org;
> > > > > > > > > Olivier Matz <olivier.matz@6wind.com>
> > > > > > > > > Subject: Re: [PATCH v3 04/14] net/mlx5: support Rx
> > > > > > > > > tunnel type identification
> > > > > > > > >
> > > > > > > > > +Olivier,
> > > > > > > > >
> > > > > > > > > On Fri, Apr 13, 2018 at 07:20:13PM +0800, Xueming Li wrote:
> > > > > > > > > > This patch introduced tunnel type identification based on flow rules.
> > > > > > > > > > If flows of multiple tunnel types built on same queue,
> > > > > > > > > > RTE_PTYPE_TUNNEL_MASK will be returned, user
> > > > > > > > > > application could use bits in flow mark as tunnel type identifier.
> > > > > > > > >
> > > > > > > > > For an application it will mean the packet embed all
> > > > > > > > > tunnel types defined in DPDK, to make such thing you
> > > > > > > > > need a RTE_PTYPE_TUNNEL_UNKNOWN which does not exists currently.
> > > > > > > >
> > > > > > > > There was a RTE_PTYPE_TUNNEL_UNKNOWN definition, but
> > > > > > > > removed due to
> > > > > > > discussion.
> > > > > > > > So I think it good to add it in the patchset of reviewed by Adrien.
> > > > > > >
> > > > > > > Agreed,
> > > > > > >
> > > > > > > >
> > > > > > > > > Even with it, the application still needs to parse the
> > > > > > > > > packet to discover which tunnel the packet embed, is
> > > > > > > > > there any benefit having such bit? Not so sure.
> > > > > > > >
> > > > > > > > With a tunnel flag, checksum status represent inner checksum.
> > > > > > >
> > > > > > > Not sure this is generic enough, MLX5 behaves as this, but
> > > > > > > how behaves other NICs? It should have specific bits for
> > > > > > > inner checksum if all NIC don't have the same behavior.
> > > > > >
> > > > > > From my understanding, if outer checksum invalid, the packet
> > > > > > can't be received as a tunneled packet, but a normal packet,
> > > > > > thus checksum flags always result of inner for a valid tunneled packet.
> > > > >
> > > > > Yes, since checksum validation information covers all layers at
> > > > > once (outermost to the innermost recognized), the presence of an "unknown tunnel"
> > > > > bit implicitly means outer headers are OK.
> > > > >
> > > > > Now regarding the addition of RTE_PTYPE_TUNNEL_UNKNOWN, the main
> > > > > issue I see is that it's implicit, as in getting 0 after and'ing
> > > > > packet types with RTE_PTYPE_TUNNEL_MASK means either not present or unknown type.
> > > >
> > > > How about define RTE_PTYPE_TUNNEL_UNKNOWN same ask
> > > > RTE_PTYPE_TUNNEL_MASK? And'ding packet types always return a non-zero value.
> > >
> > > I mean the value already exists, it's implicitly 0. Adding one with
> > > the same value as RTE_PTYPE_TUNNEL_MASK could be seen as a waste of
> > > a value otherwise usable for an actual tunnel type (there are only 4 bits).
> > >
> > > > > How about not setting any tunnel bit and let applications rely
> > > > > on the presence of RTE_PTYPE_INNER_* to determine that there is
> > > > > a tunnel of unknown type? The rationale being that a tunneled
> > > > > packet without an inner payload is
> > > kind of pointless anyway.
> > > >
> > > > An unknown type doesn't break anything, neither enum bits, straightforward IMHO.
> > >
> > > Keep in mind that mbuf packet types report what is identified. All
> > > the definitions in this file name a specific protocol. For instance
> > > there is no such definition as "L3 present" or "L4 present". "Tunnel present" doesn't make a lot
> of sense on its own either.
> > >
> > > Don't you agree that reporting at least one inner ptype while
> > > leaving tunnel ptype to 0 automatically addresses this issue?
> >
> > Currently, no inner L2 ptype, so for packet with only L2, it will be recognized as non-tunnel packet.
>
> Applications can live with it. Don't bother with a ptype API change at this point, it raises more
> issues than it solves.
>
> Given the size of the series, let's deal with that later through a separate task and according to user
> feedback.
Nelio, so I'll leave it as it is, are you okay with it?
>
> --
> Adrien Mazarguil
> 6WIND
next prev parent reply other threads:[~2018-04-17 4:53 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180410133415.189905-1-xuemingl%40mellanox.com>
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 00/14] mlx5 Rx tunnel offloading Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 00/11] " Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 " Xueming Li
2018-04-23 12:32 ` [dpdk-dev] [PATCH v6 " Xueming Li
2018-04-24 8:24 ` Nélio Laranjeiro
2018-04-24 8:25 ` Xueming(Steven) Li
2018-04-26 6:23 ` Shahaf Shuler
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 01/11] net/mlx5: support 16 hardware priorities Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 02/11] net/mlx5: support GRE tunnel flow Xueming Li
2018-04-23 12:55 ` Nélio Laranjeiro
2018-04-23 13:32 ` Xueming(Steven) Li
2018-04-23 13:46 ` Nélio Laranjeiro
2018-04-24 7:40 ` Xueming(Steven) Li
2018-04-24 8:21 ` Nélio Laranjeiro
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 03/11] net/mlx5: support L3 VXLAN flow Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 04/11] net/mlx5: support Rx tunnel type identification Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 05/11] net/mlx5: cleanup tunnel checksum offloads Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 06/11] net/mlx5: split flow RSS handling logic Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 07/11] net/mlx5: support tunnel RSS level Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 08/11] net/mlx5: add hardware flow debug dump Xueming Li
2018-04-26 10:09 ` Ferruh Yigit
2018-04-26 10:48 ` Shahaf Shuler
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 09/11] net/mlx5: introduce VXLAN-GPE tunnel type Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 10/11] net/mlx5: allow flow tunnel ID 0 with outer pattern Xueming Li
2018-04-23 12:33 ` [dpdk-dev] [PATCH v6 11/11] doc: update mlx5 guide on tunnel offloading Xueming Li
2018-04-26 11:00 ` Ferruh Yigit
2018-04-26 14:03 ` Xueming(Steven) Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 01/11] net/mlx5: support 16 hardware priorities Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 02/11] net/mlx5: support GRE tunnel flow Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 03/11] net/mlx5: support L3 VXLAN flow Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 04/11] net/mlx5: support Rx tunnel type identification Xueming Li
2018-04-23 7:40 ` Nélio Laranjeiro
2018-04-23 7:56 ` Xueming(Steven) Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 05/11] net/mlx5: cleanup tunnel checksum offloads Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 06/11] net/mlx5: split flow RSS handling logic Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 07/11] net/mlx5: support tunnel RSS level Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 08/11] net/mlx5: add hardware flow debug dump Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 09/11] net/mlx5: introduce VXLAN-GPE tunnel type Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 10/11] net/mlx5: allow flow tunnel ID 0 with outer pattern Xueming Li
2018-04-20 12:23 ` [dpdk-dev] [PATCH v5 11/11] doc: update mlx5 guide on tunnel offloading Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 01/11] net/mlx5: support 16 hardware priorities Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 02/11] net/mlx5: support GRE tunnel flow Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 03/11] net/mlx5: support L3 VXLAN flow Xueming Li
2018-04-18 6:48 ` Nélio Laranjeiro
2018-04-18 14:43 ` Xueming(Steven) Li
2018-04-18 15:08 ` Nélio Laranjeiro
2018-04-19 6:20 ` Xueming(Steven) Li
2018-04-19 6:55 ` Nélio Laranjeiro
2018-04-19 10:21 ` Xueming(Steven) Li
2018-04-19 11:15 ` Nélio Laranjeiro
2018-04-19 11:53 ` Xueming(Steven) Li
2018-04-19 12:18 ` Nélio Laranjeiro
2018-04-19 12:49 ` Xueming(Steven) Li
2018-04-19 13:40 ` Nélio Laranjeiro
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 04/11] net/mlx5: support Rx tunnel type identification Xueming Li
2018-04-18 6:50 ` Nélio Laranjeiro
2018-04-18 14:33 ` Xueming(Steven) Li
2018-04-18 15:06 ` Nélio Laranjeiro
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 05/11] net/mlx5: cleanup tunnel checksum offloads Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 06/11] net/mlx5: split flow RSS handling logic Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 07/11] net/mlx5: support tunnel RSS level Xueming Li
2018-04-18 6:55 ` Nélio Laranjeiro
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 08/11] net/mlx5: add hardware flow debug dump Xueming Li
2018-04-18 6:57 ` Nélio Laranjeiro
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 09/11] net/mlx5: introduce VXLAN-GPE tunnel type Xueming Li
2018-04-18 6:58 ` Nélio Laranjeiro
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 10/11] net/mlx5: allow flow tunnel ID 0 with outer pattern Xueming Li
2018-04-17 15:14 ` [dpdk-dev] [PATCH v4 11/11] doc: update mlx5 guide on tunnel offloading Xueming Li
2018-04-18 7:00 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 01/14] net/mlx5: support 16 hardware priorities Xueming Li
2018-04-13 11:58 ` Nélio Laranjeiro
2018-04-13 13:10 ` Xueming(Steven) Li
2018-04-13 13:46 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 02/14] net/mlx5: support GRE tunnel flow Xueming Li
2018-04-13 12:02 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 03/14] net/mlx5: support L3 VXLAN flow Xueming Li
2018-04-13 12:13 ` Nélio Laranjeiro
2018-04-13 13:51 ` Xueming(Steven) Li
2018-04-13 14:04 ` Xueming(Steven) Li
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 04/14] net/mlx5: support Rx tunnel type identification Xueming Li
2018-04-13 13:02 ` Nélio Laranjeiro
2018-04-14 12:57 ` Xueming(Steven) Li
2018-04-16 7:28 ` Nélio Laranjeiro
2018-04-16 8:05 ` Xueming(Steven) Li
2018-04-16 9:28 ` Adrien Mazarguil
2018-04-16 13:32 ` Xueming(Steven) Li
2018-04-16 13:47 ` Adrien Mazarguil
2018-04-16 15:27 ` Xueming(Steven) Li
2018-04-16 16:02 ` Adrien Mazarguil
2018-04-17 4:53 ` Xueming(Steven) Li [this message]
2018-04-17 7:20 ` Nélio Laranjeiro
2018-04-17 11:50 ` Xueming(Steven) Li
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 05/14] net/mlx5: cleanup tunnel checksum offloads Xueming Li
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 06/14] net/mlx5: split flow RSS handling logic Xueming Li
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 07/14] net/mlx5: support tunnel RSS level Xueming Li
2018-04-13 13:27 ` Nélio Laranjeiro
2018-04-14 10:12 ` Xueming(Steven) Li
2018-04-16 12:25 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 08/14] net/mlx5: add hardware flow debug dump Xueming Li
2018-04-13 13:29 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 09/14] net/mlx5: introduce VXLAN-GPE tunnel type Xueming Li
2018-04-13 13:32 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 10/14] net/mlx5: allow flow tunnel ID 0 with outer pattern Xueming Li
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 11/14] net/mlx5: support MPLS-in-GRE and MPLS-in-UDP Xueming Li
2018-04-13 13:37 ` Nélio Laranjeiro
2018-04-13 14:48 ` Xueming(Steven) Li
2018-04-13 14:55 ` Nélio Laranjeiro
2018-04-13 15:22 ` Xueming(Steven) Li
2018-04-16 8:14 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 12/14] doc: update mlx5 guide on tunnel offloading Xueming Li
2018-04-13 13:38 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 13/14] net/mlx5: fix invalid flow item check Xueming Li
2018-04-13 13:40 ` Nélio Laranjeiro
2018-04-13 11:20 ` [dpdk-dev] [PATCH v3 14/14] net/mlx5: support RSS configuration in isolated mode Xueming Li
2018-04-13 13:43 ` Nélio Laranjeiro
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