1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Intel Corporation
5 #ifndef _RTE_FLOW_CLASSIFY_H_
6 #define _RTE_FLOW_CLASSIFY_H_
11 * RTE Flow Classify Library
13 * @b EXPERIMENTAL: this API may change without prior notice
15 * This library provides flow record information with some measured properties.
17 * Application should define the flow and measurement criteria (action) for it.
19 * The Library doesn't maintain any flow records itself, instead flow
20 * information is returned to upper layer only for given packets.
22 * It is application's responsibility to call rte_flow_classifier_query()
23 * for a burst of packets, just after receiving them or before transmitting
25 * Application should provide the flow type interested in, measurement to apply
26 * to that flow in rte_flow_classify_table_entry_add() API, and should provide
27 * the rte_flow_classifier object and storage to put results in for the
28 * rte_flow_classifier_query() API.
31 * - application calls rte_flow_classifier_create() to create an
32 * rte_flow_classifier object.
33 * - application calls rte_flow_classify_table_create() to create a table
34 * in the rte_flow_classifier object.
35 * - application calls rte_flow_classify_table_entry_add() to add a rule to
36 * the table in the rte_flow_classifier object.
37 * - application calls rte_flow_classifier_query() in a polling manner,
38 * preferably after rte_eth_rx_burst(). This will cause the library to
39 * match packet information to flow information with some measurements.
40 * - rte_flow_classifier object can be destroyed when it is no longer needed
41 * with rte_flow_classifier_free()
44 #include <rte_ethdev.h>
45 #include <rte_ether.h>
48 #include <rte_table_acl.h>
54 extern int librte_flow_classify_logtype;
56 #define RTE_FLOW_CLASSIFY_LOG(level, fmt, args...) \
57 rte_log(RTE_LOG_ ## level, librte_flow_classify_logtype, "%s(): " fmt, \
60 #ifndef RTE_FLOW_CLASSIFY_TABLE_MAX
61 #define RTE_FLOW_CLASSIFY_TABLE_MAX 32
64 /** Opaque data type for flow classifier */
65 struct rte_flow_classifier;
67 /** Opaque data type for flow classify rule */
68 struct rte_flow_classify_rule;
70 /** Flow classify rule type */
71 enum rte_flow_classify_rule_type {
73 RTE_FLOW_CLASSIFY_RULE_TYPE_NONE,
74 /** IPv4 5tuple type */
75 RTE_FLOW_CLASSIFY_RULE_TYPE_IPV4_5TUPLE,
78 /** Flow classify table type */
79 enum rte_flow_classify_table_type {
81 RTE_FLOW_CLASSIFY_TABLE_TYPE_NONE = 1 << 0,
83 RTE_FLOW_CLASSIFY_TABLE_ACL_IP4_5TUPLE = 1 << 1,
84 /** ACL VLAN IP4 5TUPLE */
85 RTE_FLOW_CLASSIFY_TABLE_ACL_VLAN_IP4_5TUPLE = 1 << 2,
86 /** ACL QinQ IP4 5TUPLE */
87 RTE_FLOW_CLASSIFY_TABLE_ACL_QINQ_IP4_5TUPLE = 1 << 3,
91 /** Parameters for flow classifier creation */
92 struct rte_flow_classifier_params {
93 /** flow classifier name */
96 /** CPU socket ID where memory for the flow classifier and its */
97 /** elements (tables) should be allocated */
101 /** Parameters for table creation */
102 struct rte_flow_classify_table_params {
103 /** Table operations (specific to each table type) */
104 struct rte_table_ops *ops;
106 /** Opaque param to be passed to the table create operation */
109 /** Classifier table type */
110 enum rte_flow_classify_table_type type;
113 /** IPv4 5-tuple data */
114 struct rte_flow_classify_ipv4_5tuple {
115 uint32_t dst_ip; /**< Destination IP address in big endian. */
116 uint32_t dst_ip_mask; /**< Mask of destination IP address. */
117 uint32_t src_ip; /**< Source IP address in big endian. */
118 uint32_t src_ip_mask; /**< Mask of destination IP address. */
119 uint16_t dst_port; /**< Destination port in big endian. */
120 uint16_t dst_port_mask; /**< Mask of destination port. */
121 uint16_t src_port; /**< Source Port in big endian. */
122 uint16_t src_port_mask; /**< Mask of source port. */
123 uint8_t proto; /**< L4 protocol. */
124 uint8_t proto_mask; /**< Mask of L4 protocol. */
130 * For the count action, stats can be returned by the query API.
132 * Storage for stats is provided by application.
134 struct rte_flow_classify_stats {
138 struct rte_flow_classify_ipv4_5tuple_stats {
139 /** count of packets that match IPv4 5tuple pattern */
141 /** IPv4 5tuple data */
142 struct rte_flow_classify_ipv4_5tuple ipv4_5tuple;
146 * Flow classifier create
149 * Parameters for flow classifier creation
151 * Handle to flow classifier instance on success or NULL otherwise
153 struct rte_flow_classifier *
154 rte_flow_classifier_create(struct rte_flow_classifier_params *params);
157 * Flow classifier free
160 * Handle to flow classifier instance
162 * 0 on success, error code otherwise
165 rte_flow_classifier_free(struct rte_flow_classifier *cls);
168 * Flow classify table create
171 * Handle to flow classifier instance
173 * Parameters for flow_classify table creation
175 * 0 on success, error code otherwise
178 rte_flow_classify_table_create(struct rte_flow_classifier *cls,
179 struct rte_flow_classify_table_params *params);
182 * Flow classify validate
185 * Handle to flow classifier instance
187 * Flow rule attributes
189 * Pattern specification (list terminated by the END pattern item).
191 * Associated actions (list terminated by the END pattern item).
193 * Perform verbose error reporting if not NULL. Structure
194 * initialised in case of error only.
196 * 0 on success, error code otherwise
199 rte_flow_classify_validate(struct rte_flow_classifier *cls,
200 const struct rte_flow_attr *attr,
201 const struct rte_flow_item pattern[],
202 const struct rte_flow_action actions[],
203 struct rte_flow_error *error);
206 * Add a flow classify rule to the flow_classifer table.
209 * Flow classifier handle
211 * Flow rule attributes
213 * Pattern specification (list terminated by the END pattern item).
215 * Associated actions (list terminated by the END pattern item).
216 * @param[out] key_found
217 * returns 1 if rule present already, 0 otherwise.
219 * Perform verbose error reporting if not NULL. Structure
220 * initialised in case of error only.
222 * A valid handle in case of success, NULL otherwise.
224 struct rte_flow_classify_rule *
225 rte_flow_classify_table_entry_add(struct rte_flow_classifier *cls,
226 const struct rte_flow_attr *attr,
227 const struct rte_flow_item pattern[],
228 const struct rte_flow_action actions[],
230 struct rte_flow_error *error);
233 * Delete a flow classify rule from the flow_classifer table.
236 * Flow classifier handle
240 * 0 on success, error code otherwise.
243 rte_flow_classify_table_entry_delete(struct rte_flow_classifier *cls,
244 struct rte_flow_classify_rule *rule);
247 * Query flow classifier for given rule.
250 * Flow classifier handle
252 * Pointer to packets to process
254 * Number of packets to process
258 * Flow classify stats
261 * 0 on success, error code otherwise.
264 rte_flow_classifier_query(struct rte_flow_classifier *cls,
265 struct rte_mbuf **pkts,
266 const uint16_t nb_pkts,
267 struct rte_flow_classify_rule *rule,
268 struct rte_flow_classify_stats *stats);
274 #endif /* _RTE_FLOW_CLASSIFY_H_ */