From: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
To: Vinicius Costa Gomes <vinicius.gomes@intel.com>,
"davem@davemloft.net" <davem@davemloft.net>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "Arvid.Brodin@xdin.com" <Arvid.Brodin@xdin.com>,
"m-karicheri2@ti.com" <m-karicheri2@ti.com>,
"michael.chan@broadcom.com" <michael.chan@broadcom.com>,
"vishal@chelsio.com" <vishal@chelsio.com>,
"saeedm@mellanox.com" <saeedm@mellanox.com>,
"jiri@mellanox.com" <jiri@mellanox.com>,
"idosch@mellanox.com" <idosch@mellanox.com>,
"alexandre.belloni@bootlin.com" <alexandre.belloni@bootlin.com>,
"ivan.khoronzhuk@linaro.org" <ivan.khoronzhuk@linaro.org>,
"andre.guedes@linux.intel.com" <andre.guedes@linux.intel.com>,
"allan.nielsen@microchip.com" <allan.nielsen@microchip.com>,
"joergen.andreasen@microchip.com"
<joergen.andreasen@microchip.com>,
Vladimir Oltean <vladimir.oltean@nxp.com>,
"jhs@mojatatu.com" <jhs@mojatatu.com>
Subject: RE: [EXT] Re: [RFC, net-next] net: qos: introduce a frer action to implement 802.1CB
Date: Wed, 29 Sep 2021 10:25:58 +0000 [thread overview]
Message-ID: <DB8PR04MB5785F3128FEB1FB1B2F9AC0DF0A99@DB8PR04MB5785.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <87czos9vnj.fsf@linux.intel.com>
Hi Vinicius,
On Sep 29, 2021 at 6:35:59 +0000, Vinicius Costa Gomes wrote:
> > This patch introduce a frer action to implement frame replication and
> > elimination for reliability, which is defined in IEEE P802.1CB.
> >
>
> An action seems, to me, a bit too limiting/fine grained for a frame replication
> and elimination feature.
>
> At least I want to hear the reasons that the current hsr/prp support cannot be
> extended to support one more tag format/protocol.
>
> And the current name for the spec is IEEE 802.1CB-2017.
>
802.1CB can be set on bridge ports, and need to use bridge forward
Function as a relay system. It only works on identified streams,
unrecognized flows still need to pass through the bridged network
normally.
But current hsr/prp seems only support two ports, and cannot use the
ports in bridge. It's hard to implement FRER functions on current HSR
driver.
You can see chapter "D.2 Example 2: Various stack positions" in IEEE 802.1CB-2017,
Protocol stack for relay system is like follows:
Stream Transfer Function
| |
| Sequence generation
| Sequence encode/decode
Stream identification Active Stream identification
| |
| Internal LAN---- Relay system forwarding
| | |
MAC MAC MAC
Use port actions to easily implement FRER tag add/delete, split, and
recover functions.
Current HSR/PRP driver can be used for port HSR/PRP set, and tc-frer
Action to be used for stream RTAG/HSR/PRP set and recover.
Thanks,
Xiaoliang
next prev parent reply other threads:[~2021-09-29 10:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-28 11:44 [RFC, net-next] net: qos: introduce a frer action to implement 802.1CB Xiaoliang Yang
2021-09-28 22:34 ` Vinicius Costa Gomes
2021-09-29 10:25 ` Xiaoliang Yang [this message]
2021-10-01 16:17 ` [EXT] " Vladimir Oltean
2021-10-01 17:13 ` Vinicius Costa Gomes
2021-10-01 17:27 ` Vinicius Costa Gomes
2021-10-01 17:55 ` Vladimir Oltean
2021-10-01 18:11 ` Vladimir Oltean
2021-10-01 22:56 ` Vinicius Costa Gomes
2021-10-04 18:52 ` Vinicius Costa Gomes
2022-05-06 11:55 ` Ferenc Fejes
2022-05-06 12:23 ` Vladimir Oltean
2022-05-06 14:44 ` Ferenc Fejes
2022-05-06 19:31 ` Vladimir Oltean
2022-05-09 11:27 ` István Moldován
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