From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 772F4A0564; Tue, 24 Mar 2020 11:18:18 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 562CC1C0D6; Tue, 24 Mar 2020 11:18:18 +0100 (CET) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [67.231.154.164]) by dpdk.org (Postfix) with ESMTP id 5BCAE1C0D6 for ; Tue, 24 Mar 2020 11:18:16 +0100 (CET) Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.150]) by dispatch1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id E6D6320062; Tue, 24 Mar 2020 10:18:15 +0000 (UTC) Received: from us4-mdac16-5.at1.mdlocal (unknown [10.110.49.156]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id E5E55800A3; Tue, 24 Mar 2020 10:18:15 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us5.ppe-hosted.com (unknown [10.110.50.12]) by 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7WrJz/GvbNoFhJoJ6RzxCMQrFgxrssVZ7w5HcUj94lbnJ6osdYE/WpSd50B6jet6LKh5revg u9XI9CoqsPQ1V4wKYYdllPuogCye7KNYNKuiiuSNpaF4gHq1ZWGArwZtWHjgc2v3LegOpRQF SwOskMKmWsUyHIRMG1p8RpkBQTqY2rGSeUqPSvaqjT0nq+SUEM6qxEXD/2Wqri/X6bamuPDb S0PkBvFD2+0zr5Bc2YkMGPBYPNGZiTp3UjmZlLfn3TiBKIC92jherY563CULjSsiBEJCOSvv 4VPLn5aAcfbCXJnE3IGCp/hPl50iQqu7BPOYBbWXeb9ptDjGCAThNxSz0WAXkmcjAFE8gdE6 Znk9 Message-ID: Date: Tue, 24 Mar 2020 13:18:04 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200316125205.22169-1-dongz@mellanox.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.17.10.39] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.5.1020-25310.003 X-TM-AS-Result: No-13.799300-8.000000-10 X-TMASE-MatchedRID: oHOSwQSJZWjmLzc6AOD8DfHkpkyUphL9WYZREwIGtxlpsnGGIgWMma8O XIrEdNR9g1RJZjzOPPLwyYmEHRk+z7qnZLvYA+IROM7ns3UgBY2/drf0OkeC/1iO0euOprwPKHp SM6RPsvIxwWSYJDP6iBqLvppgS7KkO0sJkczSrb79xyC38S1f/dWgcD0fC9Cba0TOsL14A2lnZH oNDMN+oXxs7qFZ9FbOj0IvV7jlqDguQK2tsehFmm/BUkaRdR0JfLNHMurfykjmWHHSYEnI8QMrp dyjFVP6gQPplANqhc3kOsvHl9bySDEWMLa0kLVTfjUCBXbhed/348e2CE/wYqsoAw12Y1UTsf3L cEZIG5dsOdpmaK3luBek4PJuva/3ZweKCq7gjdJ2GcWKGZufBdST/TZ3TTpFaHvr9sOkYStwmP/ re/Fv5gxhOfOSLlxOepqeoilgE0TQuCKYIRbXkp4CIKY/Hg3AtOt1ofVlaoLUHQeTVDUrItRnEQ CUU+jzjoczmuoPCq14kVUF0DjtrjE0ZPvBohqUXjs0uASWYaeIyjXCHzrBkdt13rNa/xnQ X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--13.799300-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1020-25310.003 X-MDID: 1585045095-z3CqOCDwuTM7 Subject: Re: [dpdk-dev] [PATCH v2] [RFC] ethdev: support flow aging X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 3/16/20 3:52 PM, BillZhou wrote: > One of the reasons to destroy a flow is the fact that no packet matches the > flow for "timeout" time. > For example, when TCP\UDP sessions are suddenly closed. > > Currently, there is no any dpdk mechanism for flow aging and the > applications use there own ways to detect and destroy aged-out flows. > > This RFC introduces flow aging APIs to offload the flow aging task from > the application to the port. > > Design: > - A new rte_flow action: RTE_FLOW_ACTION_TYPE_AGE to set the timeout and > the application flow context for each flow. > - A new ethdev event: RTE_ETH_EVENT_FLOW_AGED for the driver to report > that there are new aged-out flows. > - A new rte_flow API: rte_flow_get_aged_flows to get the aged-out flows > contexts from the port. > > By this design each PMD can use its best way to do the aging with the > device offloads supported by its HW. > > Signed-off-by: BillZhou LGTM > --- > v2:For API rte_flow_get_aged_flows, delete "struct rte_flow *flows[]" > this parameter. > --- > lib/librte_ethdev/rte_ethdev.h | 1 + > lib/librte_ethdev/rte_flow.h | 56 ++++++++++++++++++++++++++++++++++ > 2 files changed, 57 insertions(+) > > diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h > index d1a593ad11..03135a7138 100644 > --- a/lib/librte_ethdev/rte_ethdev.h > +++ b/lib/librte_ethdev/rte_ethdev.h > @@ -3015,6 +3015,7 @@ enum rte_eth_event_type { > RTE_ETH_EVENT_NEW, /**< port is probed */ > RTE_ETH_EVENT_DESTROY, /**< port is released */ > RTE_ETH_EVENT_IPSEC, /**< IPsec offload related event */ > + RTE_ETH_EVENT_FLOW_AGED,/**< New aged-out flows detected in the port */ > RTE_ETH_EVENT_MAX /**< max value of this enum */ > }; > > diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h > index 5625dc4917..1fc05bf56c 100644 > --- a/lib/librte_ethdev/rte_flow.h > +++ b/lib/librte_ethdev/rte_flow.h > @@ -2051,6 +2051,14 @@ enum rte_flow_action_type { > * See struct rte_flow_action_set_dscp. > */ > RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP, > + > + /** > + * Report as aged-out if timeout passed without any matching on the > + * flow. > + * > + * See struct rte_flow_action_age. > + */ > + RTE_FLOW_ACTION_TYPE_AGE, > }; > > /** > @@ -2633,6 +2641,22 @@ struct rte_flow_action { > const void *conf; /**< Pointer to action configuration object. */ > }; > > +/** > + * @warning > + * @b EXPERIMENTAL: this structure may change without prior notice > + * > + * RTE_FLOW_ACTION_TYPE_AGE > + * > + * Report as aged-out if timeout passed without any matching on the flow. > + * > + * The flow context and the flow handle will be reported by the > + * rte_flow_get_aged_flows API. > + */ > +struct rte_flow_action_age { > + uint16_t timeout; /**< Time in seconds. */ Is it intentionally defined small? May be it is better to use uint32_t? I just want to understand the rational behind the type choice. > + void *context; /**< The user flow context. */ > +}; > + > /** > * Opaque type returned after successfully creating a flow. > * > @@ -3224,6 +3248,38 @@ rte_flow_conv(enum rte_flow_conv_op op, > const void *src, > struct rte_flow_error *error); > > +/** > + * Get aged-out flows of a given port. > + * > + * RTE_ETH_EVENT_FLOW_AGED is triggered when a port detects aged-out flows. > + * This function can be called to get the aged flows usynchronously from the > + * event callback or synchronously when the user wants it. > + * The callback synchronization is on the user responsibility. > + * > + * @param port_id > + * Port identifier of Ethernet device. > + * @param[in/out] contexts > + * An allocated array to get the aged-out flows contexts from input age > + * action config, if input contexts is null, return the aged-out flows. > + * NULL indicates the flow contexts should not be reported. > + * @param[in] nb_context > + * The allocated array entries number of @p contexts if exist. > + * @param[out] error > + * Perform verbose error reporting if not NULL. Initialized in case of > + * error only. > + * > + * @return > + * 0 in case there are not any aged-out contexts or flows, otherwise if > + * positive is the number of the reported aged-out contexts or flows to > + * @p contexts, a negative errno value otherwise and rte_errno is set. > + * > + * @see rte_flow_action_age > + */ > +__rte_experimental > +int > +rte_flow_get_aged_flows(uint16_t port_id, void *contexts[], > + int nb_context, struct rte_flow_error *error); > + > #ifdef __cplusplus > } > #endif >