From: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
To: Qi Zhang <qi.z.zhang@intel.com>
Cc: adrien.mazarguil@6wind.com, dev@dpdk.org, declan.doherty@intel.com
Subject: Re: [dpdk-dev] [RFC 0/5] rte_flow extension for vSwitch acceleration
Date: Tue, 2 Jan 2018 09:12:55 +0100 [thread overview]
Message-ID: <20180102081255.fivvu5apxry6ntsx@laranjeiro-vm.dev.6wind.com> (raw)
In-Reply-To: <1513805689-28202-1-git-send-email-qi.z.zhang@intel.com>
Hi Zhang,
On Wed, Dec 20, 2017 at 04:34:44PM -0500, Qi Zhang wrote:
> This patch extend rte_flow API.
> The purpose is to provide comfortable programming interface for virtual switch
> software (such as OVS) to take advantage of incoming device's vSwitch acceleration
> capability when using DPDK as data plane.
>
> Below is summary of changes:
>
> 1. Support to specify flow's destination as an ethdev interface.
>
> Add action RTE_FLOW_ACTION_TYPE_ETHDEV_PORT, use port_id as the identification
> of the destitation. A typical use case is, with a smart NIC used for vSwitch
> acceleration, flow is defined to redirect packet between switch port that is
> managed by a Port Representor.
> See patch for Port Representor: http://dpdk.org/dev/patchwork/patch/31458/
>
> 2. Enhanced flow statistics query.
> Enhanced action RTE_FLOW_ACTION_COUNT by adding last hit timestamp tracking which is
> the requirement from OVS.
Seems this introduce a regression for drop flows and for hardware unable
to timestamp packets which are already using the count action.
Why not using the timestamp API in conjunction with the mark id action?
> 3. Add flow timeout support as the requirement from OVS
> Application is able to
> a) Setup the time duration of a flow, the flow is expected to be deleted automatically
> when timeout.
> b) Ping a flow to check if it is active or not.
> c) Register a callback function when a flow is deleted due to timeout.
>
> 4. Add protocol headers which will be supported by incoming device.
>
> New protocal headers include IPV4 ARP, IPV6 ICMP , IPV6 extent header.
>
> 5. Add packet modification actions which will be supported by incoming device.
>
> Add new actions that be used to modify packet content with generic semantic:
>
> RTE_FLOW_ACTION_TYPE_FIELD_UPDATE: update specific field of packet
> RTE_FLWO_ACTION_TYPE_FIELD_INCREMENT: increament specific field of packet
> RTE_FLWO_ACTION_TYPE_FIELD_DECREMENT: decreament specific field of packet
> RTE_FLWO_ACTION_TYPE_FIELD_COPY: copy data from one field to another in packet.
>
> All action use struct rte_flow_item parameter to match the pattern that going
> to be modified, if no pattern match, the action just be skipped.
> These action are non-terminating action. they will not impact the fate of the
> packets, since pattern match is expected to be performed before packet be modified.
>
> Note:
> The RFC patch is based on v17.11.
> Testpmd command line support is not included.
>
> Qi Zhang (4):
> ether: add flow action to redirect packet in a switch domain
> ether: add flow last hit query support
> ether: Add flow timeout support
> ether: add packet modification aciton in rte_flow
>
> Thomas Monjalon (1):
> version: 17.11.0
>
> doc/guides/prog_guide/rte_flow.rst | 148 +++++++++++++++++++++++++++
> lib/librte_eal/common/include/rte_version.h | 4 +-
> lib/librte_ether/rte_flow.c | 38 +++++++
> lib/librte_ether/rte_flow.h | 149 +++++++++++++++++++++++++++-
> lib/librte_ether/rte_flow_driver.h | 12 +++
> pkg/dpdk.spec | 2 +-
> 6 files changed, 349 insertions(+), 4 deletions(-)
>
> --
> 2.7.4
>
Regards,
--
Nélio Laranjeiro
6WIND
prev parent reply other threads:[~2018-01-02 8:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-20 21:34 Qi Zhang
2017-12-20 21:34 ` [dpdk-dev] [RFC 1/5] version: 17.11.0 Qi Zhang
2017-12-21 9:07 ` De Lara Guarch, Pablo
2017-12-21 9:13 ` Zhang, Qi Z
2017-12-20 21:34 ` [dpdk-dev] [RFC 2/5] ether: add flow action to redirect packet in a switch domain Qi Zhang
2017-12-20 21:34 ` [dpdk-dev] [RFC 3/5] ether: add flow last hit query support Qi Zhang
2017-12-20 21:34 ` [dpdk-dev] [RFC 4/5] ether: Add flow timeout support Qi Zhang
2017-12-20 21:34 ` [dpdk-dev] [RFC 5/5] ether: add packet modification aciton in rte_flow Qi Zhang
2018-01-02 8:12 ` Nelio Laranjeiro [this message]
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