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Thu, 14 Dec 2023 02:58:51 -0800 From: Michael Baum To: CC: Ori Kam , Dariusz Sosnowski , Aman Singh , Yuying Zhang , Ferruh Yigit , "Thomas Monjalon" Subject: [PATCH v4 1/2] ethdev: add random item support Date: Thu, 14 Dec 2023 12:58:43 +0200 Message-ID: <20231214105844.1640764-2-michaelba@nvidia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231214105844.1640764-1-michaelba@nvidia.com> References: <20231130163215.666239-1-michaelba@nvidia.com> <20231214105844.1640764-1-michaelba@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PEPF0000343C:EE_|LV2PR12MB5847:EE_ X-MS-Office365-Filtering-Correlation-Id: ebaa15c3-3d4f-46b1-66c1-08dbfc93af24 X-LD-Processed: 43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160; 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This item enables to match on some random value as a part of flow rule. Signed-off-by: Michael Baum Acked-by: Dariusz Sosnowski Acked-by: Ori Kam --- doc/guides/nics/features/default.ini | 1 + doc/guides/prog_guide/rte_flow.rst | 14 +++++++++++ doc/guides/rel_notes/release_24_03.rst | 5 ++++ lib/ethdev/rte_flow.c | 1 + lib/ethdev/rte_flow.h | 35 +++++++++++++++++++++++++- 5 files changed, 55 insertions(+), 1 deletion(-) diff --git a/doc/guides/nics/features/default.ini b/doc/guides/nics/features/default.ini index 806cb033ff..6d50236292 100644 --- a/doc/guides/nics/features/default.ini +++ b/doc/guides/nics/features/default.ini @@ -140,6 +140,7 @@ pppoe_proto_id = ptype = quota = raw = +random = represented_port = sctp = tag = diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst index 627b845bfb..900fdaefb6 100644 --- a/doc/guides/prog_guide/rte_flow.rst +++ b/doc/guides/prog_guide/rte_flow.rst @@ -1573,6 +1573,20 @@ Matches the packet type as defined in rte_mbuf_ptype. - ``packet_type``: L2/L3/L4 and tunnel information. +Item: ``RANDOM`` +^^^^^^^^^^^^^^^^ + +Matches a random value. + +A random unsigned integer (at most 32-bit) is generated for each packet during +flow rule processing, by either HW, SW or some external source. +Application can match on either exact value or range of values. +This value is not based on the packet data/headers. +Application shouldn't assume that this value is kept during the lifetime of +the packet. + +- ``value``: Specific value to match. + Actions ~~~~~~~ diff --git a/doc/guides/rel_notes/release_24_03.rst b/doc/guides/rel_notes/release_24_03.rst index 6f8ad27808..819cef7f20 100644 --- a/doc/guides/rel_notes/release_24_03.rst +++ b/doc/guides/rel_notes/release_24_03.rst @@ -55,6 +55,11 @@ New Features Also, make sure to start the actual text at the margin. ======================================================= +* **Added flow matching of random value.** + + * Added ``RTE_FLOW_ITEM_TYPE_RANDOM`` to match random value. + * Added ``RTE_FLOW_FIELD_RANDOM`` to represent it in field API. + Removed Items ------------- diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c index 549e329558..090b936ca9 100644 --- a/lib/ethdev/rte_flow.c +++ b/lib/ethdev/rte_flow.c @@ -136,6 +136,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = { sizeof(struct rte_flow_item_icmp6_nd_opt_tla_eth)), MK_FLOW_ITEM(MARK, sizeof(struct rte_flow_item_mark)), MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta)), + MK_FLOW_ITEM(RANDOM, sizeof(struct rte_flow_item_random)), MK_FLOW_ITEM(TAG, sizeof(struct rte_flow_item_tag)), MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)), MK_FLOW_ITEM(GRE_OPTION, sizeof(struct rte_flow_item_gre_opt)), diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h index affdc8121b..860b100e45 100644 --- a/lib/ethdev/rte_flow.h +++ b/lib/ethdev/rte_flow.h @@ -704,6 +704,19 @@ enum rte_flow_item_type { * */ RTE_FLOW_ITEM_TYPE_PTYPE, + + /** + * [META] + * + * Matches a random value. + * + * This value is not based on the packet data/headers. + * Application shouldn't assume that this value is kept during the + * lifetime of the packet. + * + * @see struct rte_flow_item_random. + */ + RTE_FLOW_ITEM_TYPE_RANDOM, }; /** @@ -2047,6 +2060,25 @@ static const struct rte_flow_item_ib_bth rte_flow_item_ib_bth_mask = { }; #endif +/** + * @warning + * @b EXPERIMENTAL: this structure may change without prior notice + * + * RTE_FLOW_ITEM_TYPE_RANDOM + * + * Matches a random value. + */ +struct rte_flow_item_random { + uint32_t value; +}; + +/** Default mask for RTE_FLOW_ITEM_TYPE_RANDOM. */ +#ifndef __cplusplus +static const struct rte_flow_item_random rte_flow_item_random_mask = { + .value = UINT32_MAX, +}; +#endif + /** * Matching pattern item definition. * @@ -3903,7 +3935,8 @@ enum rte_flow_field_id { RTE_FLOW_FIELD_TCP_DATA_OFFSET, /**< TCP data offset. */ RTE_FLOW_FIELD_IPV4_IHL, /**< IPv4 IHL. */ RTE_FLOW_FIELD_IPV4_TOTAL_LEN, /**< IPv4 total length. */ - RTE_FLOW_FIELD_IPV6_PAYLOAD_LEN /**< IPv6 payload length. */ + RTE_FLOW_FIELD_IPV6_PAYLOAD_LEN,/**< IPv6 payload length. */ + RTE_FLOW_FIELD_RANDOM /**< Random value. */ }; /**