X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_ether%2Frte_flow.h;h=56c7334519378fba62a6ca43bfc2db38df0484ef;hb=b7cc54187ea4;hp=8013ecab2de0d7552f559d99ede1356030911b33;hpb=7cd048321d1d991dd47ddb54143f7dc701ac116a;p=dpdk.git diff --git a/lib/librte_ether/rte_flow.h b/lib/librte_ether/rte_flow.h index 8013ecab2d..56c7334519 100644 --- a/lib/librte_ether/rte_flow.h +++ b/lib/librte_ether/rte_flow.h @@ -1,34 +1,6 @@ -/*- - * BSD LICENSE - * - * Copyright 2016 6WIND S.A. - * Copyright 2016 Mellanox. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of 6WIND S.A. nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2016 6WIND S.A. + * Copyright 2016 Mellanox Technologies, Ltd */ #ifndef RTE_FLOW_H_ @@ -49,6 +21,8 @@ #include #include #include +#include +#include #ifdef __cplusplus extern "C" { @@ -296,6 +270,59 @@ enum rte_flow_item_type { * See struct rte_flow_item_gre. */ RTE_FLOW_ITEM_TYPE_GRE, + + /** + * [META] + * + * Fuzzy pattern match, expect faster than default. + * + * This is for device that support fuzzy matching option. + * Usually a fuzzy matching is fast but the cost is accuracy. + * + * See struct rte_flow_item_fuzzy. + */ + RTE_FLOW_ITEM_TYPE_FUZZY, + + /** + * Matches a GTP header. + * + * Configure flow for GTP packets. + * + * See struct rte_flow_item_gtp. + */ + RTE_FLOW_ITEM_TYPE_GTP, + + /** + * Matches a GTP header. + * + * Configure flow for GTP-C packets. + * + * See struct rte_flow_item_gtp. + */ + RTE_FLOW_ITEM_TYPE_GTPC, + + /** + * Matches a GTP header. + * + * Configure flow for GTP-U packets. + * + * See struct rte_flow_item_gtp. + */ + RTE_FLOW_ITEM_TYPE_GTPU, + + /** + * Matches a ESP header. + * + * See struct rte_flow_item_esp. + */ + RTE_FLOW_ITEM_TYPE_ESP, + + /** + * Matches a GENEVE header. + * + * See struct rte_flow_item_geneve. + */ + RTE_FLOW_ITEM_TYPE_GENEVE, }; /** @@ -314,9 +341,11 @@ struct rte_flow_item_any { }; /** Default mask for RTE_FLOW_ITEM_TYPE_ANY. */ +#ifndef __cplusplus static const struct rte_flow_item_any rte_flow_item_any_mask = { .num = 0x00000000, }; +#endif /** * RTE_FLOW_ITEM_TYPE_VF @@ -341,9 +370,11 @@ struct rte_flow_item_vf { }; /** Default mask for RTE_FLOW_ITEM_TYPE_VF. */ +#ifndef __cplusplus static const struct rte_flow_item_vf rte_flow_item_vf_mask = { .id = 0x00000000, }; +#endif /** * RTE_FLOW_ITEM_TYPE_PORT @@ -370,9 +401,11 @@ struct rte_flow_item_port { }; /** Default mask for RTE_FLOW_ITEM_TYPE_PORT. */ +#ifndef __cplusplus static const struct rte_flow_item_port rte_flow_item_port_mask = { .index = 0x00000000, }; +#endif /** * RTE_FLOW_ITEM_TYPE_RAW @@ -403,6 +436,7 @@ struct rte_flow_item_raw { }; /** Default mask for RTE_FLOW_ITEM_TYPE_RAW. */ +#ifndef __cplusplus static const struct rte_flow_item_raw rte_flow_item_raw_mask = { .relative = 1, .search = 1, @@ -411,6 +445,7 @@ static const struct rte_flow_item_raw rte_flow_item_raw_mask = { .limit = 0xffff, .length = 0xffff, }; +#endif /** * RTE_FLOW_ITEM_TYPE_ETH @@ -420,15 +455,17 @@ static const struct rte_flow_item_raw rte_flow_item_raw_mask = { struct rte_flow_item_eth { struct ether_addr dst; /**< Destination MAC. */ struct ether_addr src; /**< Source MAC. */ - uint16_t type; /**< EtherType. */ + rte_be16_t type; /**< EtherType. */ }; /** Default mask for RTE_FLOW_ITEM_TYPE_ETH. */ +#ifndef __cplusplus static const struct rte_flow_item_eth rte_flow_item_eth_mask = { .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff", .src.addr_bytes = "\xff\xff\xff\xff\xff\xff", - .type = 0x0000, + .type = RTE_BE16(0x0000), }; +#endif /** * RTE_FLOW_ITEM_TYPE_VLAN @@ -439,15 +476,17 @@ static const struct rte_flow_item_eth rte_flow_item_eth_mask = { * RTE_FLOW_ITEM_TYPE_VLAN. */ struct rte_flow_item_vlan { - uint16_t tpid; /**< Tag protocol identifier. */ - uint16_t tci; /**< Tag control information. */ + rte_be16_t tpid; /**< Tag protocol identifier. */ + rte_be16_t tci; /**< Tag control information. */ }; /** Default mask for RTE_FLOW_ITEM_TYPE_VLAN. */ +#ifndef __cplusplus static const struct rte_flow_item_vlan rte_flow_item_vlan_mask = { - .tpid = 0x0000, - .tci = 0xffff, + .tpid = RTE_BE16(0x0000), + .tci = RTE_BE16(0xffff), }; +#endif /** * RTE_FLOW_ITEM_TYPE_IPV4 @@ -461,12 +500,14 @@ struct rte_flow_item_ipv4 { }; /** Default mask for RTE_FLOW_ITEM_TYPE_IPV4. */ +#ifndef __cplusplus static const struct rte_flow_item_ipv4 rte_flow_item_ipv4_mask = { .hdr = { - .src_addr = 0xffffffff, - .dst_addr = 0xffffffff, + .src_addr = RTE_BE32(0xffffffff), + .dst_addr = RTE_BE32(0xffffffff), }, }; +#endif /** * RTE_FLOW_ITEM_TYPE_IPV6. @@ -480,6 +521,7 @@ struct rte_flow_item_ipv6 { }; /** Default mask for RTE_FLOW_ITEM_TYPE_IPV6. */ +#ifndef __cplusplus static const struct rte_flow_item_ipv6 rte_flow_item_ipv6_mask = { .hdr = { .src_addr = @@ -490,6 +532,7 @@ static const struct rte_flow_item_ipv6 rte_flow_item_ipv6_mask = { "\xff\xff\xff\xff\xff\xff\xff\xff", }, }; +#endif /** * RTE_FLOW_ITEM_TYPE_ICMP. @@ -501,12 +544,14 @@ struct rte_flow_item_icmp { }; /** Default mask for RTE_FLOW_ITEM_TYPE_ICMP. */ +#ifndef __cplusplus static const struct rte_flow_item_icmp rte_flow_item_icmp_mask = { .hdr = { .icmp_type = 0xff, .icmp_code = 0xff, }, }; +#endif /** * RTE_FLOW_ITEM_TYPE_UDP. @@ -518,12 +563,14 @@ struct rte_flow_item_udp { }; /** Default mask for RTE_FLOW_ITEM_TYPE_UDP. */ +#ifndef __cplusplus static const struct rte_flow_item_udp rte_flow_item_udp_mask = { .hdr = { - .src_port = 0xffff, - .dst_port = 0xffff, + .src_port = RTE_BE16(0xffff), + .dst_port = RTE_BE16(0xffff), }, }; +#endif /** * RTE_FLOW_ITEM_TYPE_TCP. @@ -535,12 +582,14 @@ struct rte_flow_item_tcp { }; /** Default mask for RTE_FLOW_ITEM_TYPE_TCP. */ +#ifndef __cplusplus static const struct rte_flow_item_tcp rte_flow_item_tcp_mask = { .hdr = { - .src_port = 0xffff, - .dst_port = 0xffff, + .src_port = RTE_BE16(0xffff), + .dst_port = RTE_BE16(0xffff), }, }; +#endif /** * RTE_FLOW_ITEM_TYPE_SCTP. @@ -552,12 +601,14 @@ struct rte_flow_item_sctp { }; /** Default mask for RTE_FLOW_ITEM_TYPE_SCTP. */ +#ifndef __cplusplus static const struct rte_flow_item_sctp rte_flow_item_sctp_mask = { .hdr = { - .src_port = 0xffff, - .dst_port = 0xffff, + .src_port = RTE_BE16(0xffff), + .dst_port = RTE_BE16(0xffff), }, }; +#endif /** * RTE_FLOW_ITEM_TYPE_VXLAN. @@ -572,9 +623,11 @@ struct rte_flow_item_vxlan { }; /** Default mask for RTE_FLOW_ITEM_TYPE_VXLAN. */ +#ifndef __cplusplus static const struct rte_flow_item_vxlan rte_flow_item_vxlan_mask = { .vni = "\xff\xff\xff", }; +#endif /** * RTE_FLOW_ITEM_TYPE_E_TAG. @@ -582,18 +635,25 @@ static const struct rte_flow_item_vxlan rte_flow_item_vxlan_mask = { * Matches a E-tag header. */ struct rte_flow_item_e_tag { - uint16_t tpid; /**< Tag protocol identifier (0x893F). */ + rte_be16_t tpid; /**< Tag protocol identifier (0x893F). */ /** * E-Tag control information (E-TCI). * E-PCP (3b), E-DEI (1b), ingress E-CID base (12b). */ - uint16_t epcp_edei_in_ecid_b; + rte_be16_t epcp_edei_in_ecid_b; /** Reserved (2b), GRP (2b), E-CID base (12b). */ - uint16_t rsvd_grp_ecid_b; + rte_be16_t rsvd_grp_ecid_b; uint8_t in_ecid_e; /**< Ingress E-CID ext. */ uint8_t ecid_e; /**< E-CID ext. */ }; +/** Default mask for RTE_FLOW_ITEM_TYPE_E_TAG. */ +#ifndef __cplusplus +static const struct rte_flow_item_e_tag rte_flow_item_e_tag_mask = { + .rsvd_grp_ecid_b = RTE_BE16(0x3fff), +}; +#endif + /** * RTE_FLOW_ITEM_TYPE_NVGRE. * @@ -606,12 +666,19 @@ struct rte_flow_item_nvgre { * * c_k_s_rsvd0_ver must have value 0x2000 according to RFC 7637. */ - uint16_t c_k_s_rsvd0_ver; - uint16_t protocol; /**< Protocol type (0x6558). */ + rte_be16_t c_k_s_rsvd0_ver; + rte_be16_t protocol; /**< Protocol type (0x6558). */ uint8_t tni[3]; /**< Virtual subnet ID. */ uint8_t flow_id; /**< Flow ID. */ }; +/** Default mask for RTE_FLOW_ITEM_TYPE_NVGRE. */ +#ifndef __cplusplus +static const struct rte_flow_item_nvgre rte_flow_item_nvgre_mask = { + .tni = "\xff\xff\xff", +}; +#endif + /** * RTE_FLOW_ITEM_TYPE_MPLS. * @@ -626,9 +693,11 @@ struct rte_flow_item_mpls { }; /** Default mask for RTE_FLOW_ITEM_TYPE_MPLS. */ +#ifndef __cplusplus static const struct rte_flow_item_mpls rte_flow_item_mpls_mask = { .label_tc_s = "\xff\xff\xf0", }; +#endif /** * RTE_FLOW_ITEM_TYPE_GRE. @@ -640,14 +709,110 @@ struct rte_flow_item_gre { * Checksum (1b), reserved 0 (12b), version (3b). * Refer to RFC 2784. */ - uint16_t c_rsvd0_ver; - uint16_t protocol; /**< Protocol type. */ + rte_be16_t c_rsvd0_ver; + rte_be16_t protocol; /**< Protocol type. */ }; /** Default mask for RTE_FLOW_ITEM_TYPE_GRE. */ +#ifndef __cplusplus static const struct rte_flow_item_gre rte_flow_item_gre_mask = { - .protocol = 0xffff, + .protocol = RTE_BE16(0xffff), }; +#endif + +/** + * RTE_FLOW_ITEM_TYPE_FUZZY + * + * Fuzzy pattern match, expect faster than default. + * + * This is for device that support fuzzy match option. + * Usually a fuzzy match is fast but the cost is accuracy. + * i.e. Signature Match only match pattern's hash value, but it is + * possible two different patterns have the same hash value. + * + * Matching accuracy level can be configure by threshold. + * Driver can divide the range of threshold and map to different + * accuracy levels that device support. + * + * Threshold 0 means perfect match (no fuzziness), while threshold + * 0xffffffff means fuzziest match. + */ +struct rte_flow_item_fuzzy { + uint32_t thresh; /**< Accuracy threshold. */ +}; + +/** Default mask for RTE_FLOW_ITEM_TYPE_FUZZY. */ +#ifndef __cplusplus +static const struct rte_flow_item_fuzzy rte_flow_item_fuzzy_mask = { + .thresh = 0xffffffff, +}; +#endif + +/** + * RTE_FLOW_ITEM_TYPE_GTP. + * + * Matches a GTPv1 header. + */ +struct rte_flow_item_gtp { + /** + * Version (3b), protocol type (1b), reserved (1b), + * Extension header flag (1b), + * Sequence number flag (1b), + * N-PDU number flag (1b). + */ + uint8_t v_pt_rsv_flags; + uint8_t msg_type; /**< Message type. */ + rte_be16_t msg_len; /**< Message length. */ + rte_be32_t teid; /**< Tunnel endpoint identifier. */ +}; + +/** Default mask for RTE_FLOW_ITEM_TYPE_GTP. */ +#ifndef __cplusplus +static const struct rte_flow_item_gtp rte_flow_item_gtp_mask = { + .teid = RTE_BE32(0xffffffff), +}; +#endif + +/** + * RTE_FLOW_ITEM_TYPE_ESP + * + * Matches an ESP header. + */ +struct rte_flow_item_esp { + struct esp_hdr hdr; /**< ESP header definition. */ +}; + +/** Default mask for RTE_FLOW_ITEM_TYPE_ESP. */ +#ifndef __cplusplus +static const struct rte_flow_item_esp rte_flow_item_esp_mask = { + .hdr = { + .spi = 0xffffffff, + }, +}; +#endif + +/** + * RTE_FLOW_ITEM_TYPE_GENEVE. + * + * Matches a GENEVE header. + */ +struct rte_flow_item_geneve { + /** + * Version (2b), length of the options fields (6b), OAM packet (1b), + * critical options present (1b), reserved 0 (6b). + */ + rte_be16_t ver_opt_len_o_c_rsvd0; + rte_be16_t protocol; /**< Protocol type. */ + uint8_t vni[3]; /**< Virtual Network Identifier. */ + uint8_t rsvd1; /**< Reserved, normally 0x00. */ +}; + +/** Default mask for RTE_FLOW_ITEM_TYPE_GENEVE. */ +#ifndef __cplusplus +static const struct rte_flow_item_geneve rte_flow_item_geneve_mask = { + .vni = "\xff\xff\xff", +}; +#endif /** * Matching pattern item definition. @@ -830,6 +995,22 @@ enum rte_flow_action_type { * See struct rte_flow_action_vf. */ RTE_FLOW_ACTION_TYPE_VF, + + /** + * Traffic metering and policing (MTR). + * + * See struct rte_flow_action_meter. + * See file rte_mtr.h for MTR object configuration. + */ + RTE_FLOW_ACTION_TYPE_METER, + + /** + * Redirects packets to security engine of current device for security + * processing as specified by security session. + * + * See struct rte_flow_action_security. + */ + RTE_FLOW_ACTION_TYPE_SECURITY }; /** @@ -922,6 +1103,51 @@ struct rte_flow_action_vf { uint32_t id; /**< VF ID to redirect packets to. */ }; +/** + * RTE_FLOW_ACTION_TYPE_METER + * + * Traffic metering and policing (MTR). + * + * Packets matched by items of this type can be either dropped or passed to the + * next item with their color set by the MTR object. + * + * Non-terminating by default. + */ +struct rte_flow_action_meter { + uint32_t mtr_id; /**< MTR object ID created with rte_mtr_create(). */ +}; + +/** + * RTE_FLOW_ACTION_TYPE_SECURITY + * + * Perform the security action on flows matched by the pattern items + * according to the configuration of the security session. + * + * This action modifies the payload of matched flows. For INLINE_CRYPTO, the + * security protocol headers and IV are fully provided by the application as + * specified in the flow pattern. The payload of matching packets is + * encrypted on egress, and decrypted and authenticated on ingress. + * For INLINE_PROTOCOL, the security protocol is fully offloaded to HW, + * providing full encapsulation and decapsulation of packets in security + * protocols. The flow pattern specifies both the outer security header fields + * and the inner packet fields. The security session specified in the action + * must match the pattern parameters. + * + * The security session specified in the action must be created on the same + * port as the flow action that is being specified. + * + * The ingress/egress flow attribute should match that specified in the + * security session if the security session supports the definition of the + * direction. + * + * Multiple flows can be configured to use the same security session. + * + * Non-terminating by default. + */ +struct rte_flow_action_security { + void *security_session; /**< Pointer to security session structure. */ +}; + /** * Definition of a single action. * @@ -983,9 +1209,11 @@ struct rte_flow_error { /** * Check whether a flow rule can be created on a given port. * - * While this function has no effect on the target device, the flow rule is - * validated against its current configuration state and the returned value - * should be considered valid by the caller for that state only. + * The flow rule is validated for correctness and whether it could be accepted + * by the device given sufficient resources. The rule is checked against the + * current device mode and queue configuration. The flow rule may also + * optionally be validated against existing flow rules and device resources. + * This function has no effect on the target device. * * The returned value is guaranteed to remain valid only as long as no * successful calls to rte_flow_create() or rte_flow_destroy() are made in @@ -1011,21 +1239,27 @@ struct rte_flow_error { * * -ENOSYS: underlying device does not support this functionality. * + * -EIO: underlying device is removed. + * * -EINVAL: unknown or invalid rule specification. * * -ENOTSUP: valid but unsupported rule specification (e.g. partial * bit-masks are unsupported). * - * -EEXIST: collision with an existing rule. + * -EEXIST: collision with an existing rule. Only returned if device + * supports flow rule collision checking and there was a flow rule + * collision. Not receiving this return code is no guarantee that creating + * the rule will not fail due to a collision. * - * -ENOMEM: not enough resources. + * -ENOMEM: not enough memory to execute the function, or if the device + * supports resource validation, resource limitation on the device. * * -EBUSY: action cannot be performed due to busy device resources, may * succeed if the affected queues or even the entire port are in a stopped * state (see rte_eth_dev_rx_queue_stop() and rte_eth_dev_stop()). */ int -rte_flow_validate(uint8_t port_id, +rte_flow_validate(uint16_t port_id, const struct rte_flow_attr *attr, const struct rte_flow_item pattern[], const struct rte_flow_action actions[], @@ -1052,7 +1286,7 @@ rte_flow_validate(uint8_t port_id, * rte_flow_validate(). */ struct rte_flow * -rte_flow_create(uint8_t port_id, +rte_flow_create(uint16_t port_id, const struct rte_flow_attr *attr, const struct rte_flow_item pattern[], const struct rte_flow_action actions[], @@ -1079,7 +1313,7 @@ rte_flow_create(uint8_t port_id, * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -rte_flow_destroy(uint8_t port_id, +rte_flow_destroy(uint16_t port_id, struct rte_flow *flow, struct rte_flow_error *error); @@ -1100,7 +1334,7 @@ rte_flow_destroy(uint8_t port_id, * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -rte_flow_flush(uint8_t port_id, +rte_flow_flush(uint16_t port_id, struct rte_flow_error *error); /** @@ -1128,12 +1362,120 @@ rte_flow_flush(uint8_t port_id, * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -rte_flow_query(uint8_t port_id, +rte_flow_query(uint16_t port_id, struct rte_flow *flow, enum rte_flow_action_type action, void *data, struct rte_flow_error *error); +/** + * Restrict ingress traffic to the defined flow rules. + * + * Isolated mode guarantees that all ingress traffic comes from defined flow + * rules only (current and future). + * + * Besides making ingress more deterministic, it allows PMDs to safely reuse + * resources otherwise assigned to handle the remaining traffic, such as + * global RSS configuration settings, VLAN filters, MAC address entries, + * legacy filter API rules and so on in order to expand the set of possible + * flow rule types. + * + * Calling this function as soon as possible after device initialization, + * ideally before the first call to rte_eth_dev_configure(), is recommended + * to avoid possible failures due to conflicting settings. + * + * Once effective, leaving isolated mode may not be possible depending on + * PMD implementation. + * + * Additionally, the following functionality has no effect on the underlying + * port and may return errors such as ENOTSUP ("not supported"): + * + * - Toggling promiscuous mode. + * - Toggling allmulticast mode. + * - Configuring MAC addresses. + * - Configuring multicast addresses. + * - Configuring VLAN filters. + * - Configuring Rx filters through the legacy API (e.g. FDIR). + * - Configuring global RSS settings. + * + * @param port_id + * Port identifier of Ethernet device. + * @param set + * Nonzero to enter isolated mode, attempt to leave it otherwise. + * @param[out] error + * Perform verbose error reporting if not NULL. PMDs initialize this + * structure in case of error only. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +rte_flow_isolate(uint16_t port_id, int set, struct rte_flow_error *error); + +/** + * Initialize flow error structure. + * + * @param[out] error + * Pointer to flow error structure (may be NULL). + * @param code + * Related error code (rte_errno). + * @param type + * Cause field and error types. + * @param cause + * Object responsible for the error. + * @param message + * Human-readable error message. + * + * @return + * Negative error code (errno value) and rte_errno is set. + */ +int +rte_flow_error_set(struct rte_flow_error *error, + int code, + enum rte_flow_error_type type, + const void *cause, + const char *message); + +/** + * Generic flow representation. + * + * This form is sufficient to describe an rte_flow independently from any + * PMD implementation and allows for replayability and identification. + */ +struct rte_flow_desc { + size_t size; /**< Allocated space including data[]. */ + struct rte_flow_attr attr; /**< Attributes. */ + struct rte_flow_item *items; /**< Items. */ + struct rte_flow_action *actions; /**< Actions. */ + uint8_t data[]; /**< Storage for items/actions. */ +}; + +/** + * Copy an rte_flow rule description. + * + * @param[in] fd + * Flow rule description. + * @param[in] len + * Total size of allocated data for the flow description. + * @param[in] attr + * Flow rule attributes. + * @param[in] items + * Pattern specification (list terminated by the END pattern item). + * @param[in] actions + * Associated actions (list terminated by the END action). + * + * @return + * If len is greater or equal to the size of the flow, the total size of the + * flow description and its data. + * If len is lower than the size of the flow, the number of bytes that would + * have been written to desc had it been sufficient. Nothing is written. + */ +size_t +rte_flow_copy(struct rte_flow_desc *fd, size_t len, + const struct rte_flow_attr *attr, + const struct rte_flow_item *items, + const struct rte_flow_action *actions); + #ifdef __cplusplus } #endif