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The ACL library is used to perform an N-tuple search over a set of rules with multiple categories and find the best match for each category. Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com> Tested-by: Waterman Cao <waterman.cao@intel.com> Acked-by: Pablo de Lara Guarch <pablo.de.lara.guarch@intel.com> [Thomas: some code-style changes]
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| Original file line number | Diff line number | Diff line change |
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| # BSD LICENSE | ||
| # | ||
| # Copyright(c) 2010-2014 Intel Corporation. All rights reserved. | ||
| # All rights reserved. | ||
| # | ||
| # 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 Intel Corporation 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. | ||
|
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| include $(RTE_SDK)/mk/rte.vars.mk | ||
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| # library name | ||
| LIB = librte_acl.a | ||
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| CFLAGS += -O3 | ||
| CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) | ||
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| # all source are stored in SRCS-y | ||
| SRCS-$(CONFIG_RTE_LIBRTE_ACL) += tb_mem.c | ||
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| SRCS-$(CONFIG_RTE_LIBRTE_ACL) += rte_acl.c | ||
| SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_bld.c | ||
| SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_gen.c | ||
| SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_run.c | ||
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| # install this header file | ||
| SYMLINK-$(CONFIG_RTE_LIBRTE_ACL)-include := rte_acl_osdep.h | ||
| SYMLINK-$(CONFIG_RTE_LIBRTE_ACL)-include += rte_acl.h | ||
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| ifeq ($(CONFIG_RTE_LIBRTE_ACL_STANDALONE),y) | ||
| # standalone build | ||
| SYMLINK-$(CONFIG_RTE_LIBRTE_ACL)-include += rte_acl_osdep_alone.h | ||
| else | ||
| # this lib needs eal | ||
| DEPDIRS-$(CONFIG_RTE_LIBRTE_ACL) += lib/librte_eal lib/librte_malloc | ||
| endif | ||
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| include $(RTE_SDK)/mk/rte.lib.mk |
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| /*- | ||
| * BSD LICENSE | ||
| * | ||
| * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. | ||
| * All rights reserved. | ||
| * | ||
| * 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 Intel Corporation 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. | ||
| */ | ||
|
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| #ifndef _ACL_H_ | ||
| #define _ACL_H_ | ||
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| #ifdef __cplusplus | ||
| extern"C" { | ||
| #endif /* __cplusplus */ | ||
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| #define RTE_ACL_QUAD_MAX 5 | ||
| #define RTE_ACL_QUAD_SIZE 4 | ||
| #define RTE_ACL_QUAD_SINGLE UINT64_C(0x7f7f7f7f00000000) | ||
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| #define RTE_ACL_SINGLE_TRIE_SIZE 2000 | ||
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| #define RTE_ACL_DFA_MAX UINT8_MAX | ||
| #define RTE_ACL_DFA_SIZE (UINT8_MAX + 1) | ||
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| typedef int bits_t; | ||
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| #define RTE_ACL_BIT_SET_SIZE ((UINT8_MAX + 1) / (sizeof(bits_t) * CHAR_BIT)) | ||
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| struct rte_acl_bitset { | ||
| bits_t bits[RTE_ACL_BIT_SET_SIZE]; | ||
| }; | ||
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| #define RTE_ACL_NODE_DFA (0 << RTE_ACL_TYPE_SHIFT) | ||
| #define RTE_ACL_NODE_SINGLE (1U << RTE_ACL_TYPE_SHIFT) | ||
| #define RTE_ACL_NODE_QEXACT (2U << RTE_ACL_TYPE_SHIFT) | ||
| #define RTE_ACL_NODE_QRANGE (3U << RTE_ACL_TYPE_SHIFT) | ||
| #define RTE_ACL_NODE_MATCH (4U << RTE_ACL_TYPE_SHIFT) | ||
| #define RTE_ACL_NODE_TYPE (7U << RTE_ACL_TYPE_SHIFT) | ||
| #define RTE_ACL_NODE_UNDEFINED UINT32_MAX | ||
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| /* | ||
| * Structure of a node is a set of ptrs and each ptr has a bit map | ||
| * of values associated with this transition. | ||
| */ | ||
| struct rte_acl_ptr_set { | ||
| struct rte_acl_bitset values; /* input values associated with ptr */ | ||
| struct rte_acl_node *ptr; /* transition to next node */ | ||
| }; | ||
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| struct rte_acl_classifier_results { | ||
| int results[RTE_ACL_MAX_CATEGORIES]; | ||
| }; | ||
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| struct rte_acl_match_results { | ||
| uint32_t results[RTE_ACL_MAX_CATEGORIES]; | ||
| int32_t priority[RTE_ACL_MAX_CATEGORIES]; | ||
| }; | ||
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| struct rte_acl_node { | ||
| uint64_t node_index; /* index for this node */ | ||
| uint32_t level; /* level 0-n in the trie */ | ||
| uint32_t ref_count; /* ref count for this node */ | ||
| struct rte_acl_bitset values; | ||
| /* set of all values that map to another node | ||
| * (union of bits in each transition. | ||
| */ | ||
| uint32_t num_ptrs; /* number of ptr_set in use */ | ||
| uint32_t max_ptrs; /* number of allocated ptr_set */ | ||
| uint32_t min_add; /* number of ptr_set per allocation */ | ||
| struct rte_acl_ptr_set *ptrs; /* transitions array for this node */ | ||
| int32_t match_flag; | ||
| int32_t match_index; /* index to match data */ | ||
| uint32_t node_type; | ||
| int32_t fanout; | ||
| /* number of ranges (transitions w/ consecutive bits) */ | ||
| int32_t id; | ||
| struct rte_acl_match_results *mrt; /* only valid when match_flag != 0 */ | ||
| char transitions[RTE_ACL_QUAD_SIZE]; | ||
| /* boundaries for ranged node */ | ||
| struct rte_acl_node *next; | ||
| /* free list link or pointer to duplicate node during merge */ | ||
| struct rte_acl_node *prev; | ||
| /* points to node from which this node was duplicated */ | ||
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| uint32_t subtree_id; | ||
| uint32_t subtree_ref_count; | ||
|
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| }; | ||
| enum { | ||
| RTE_ACL_SUBTREE_NODE = 0x80000000 | ||
| }; | ||
|
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| /* | ||
| * Types of tries used to generate runtime structure(s) | ||
| */ | ||
| enum { | ||
| RTE_ACL_FULL_TRIE = 0, | ||
| RTE_ACL_NOSRC_TRIE = 1, | ||
| RTE_ACL_NODST_TRIE = 2, | ||
| RTE_ACL_NOPORTS_TRIE = 4, | ||
| RTE_ACL_NOVLAN_TRIE = 8, | ||
| RTE_ACL_UNUSED_TRIE = 0x80000000 | ||
| }; | ||
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| /** MAX number of tries per one ACL context.*/ | ||
| #define RTE_ACL_MAX_TRIES 8 | ||
|
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| /** Max number of characters in PM name.*/ | ||
| #define RTE_ACL_NAMESIZE 32 | ||
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| struct rte_acl_trie { | ||
| uint32_t type; | ||
| uint32_t count; | ||
| int32_t smallest; /* smallest rule in this trie */ | ||
| uint32_t root_index; | ||
| const uint32_t *data_index; | ||
| uint32_t num_data_indexes; | ||
| }; | ||
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| struct rte_acl_bld_trie { | ||
| struct rte_acl_node *trie; | ||
| }; | ||
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| struct rte_acl_ctx { | ||
| TAILQ_ENTRY(rte_acl_ctx) next; /**< Next in list. */ | ||
| char name[RTE_ACL_NAMESIZE]; | ||
| /** Name of the ACL context. */ | ||
| int32_t socket_id; | ||
| /** Socket ID to allocate memory from. */ | ||
| void *rules; | ||
| uint32_t max_rules; | ||
| uint32_t rule_sz; | ||
| uint32_t num_rules; | ||
| uint32_t num_categories; | ||
| uint32_t num_tries; | ||
| uint32_t match_index; | ||
| uint64_t no_match; | ||
| uint64_t idle; | ||
| uint64_t *trans_table; | ||
| uint32_t *data_indexes; | ||
| struct rte_acl_trie trie[RTE_ACL_MAX_TRIES]; | ||
| void *mem; | ||
| size_t mem_sz; | ||
| struct rte_acl_config config; /* copy of build config. */ | ||
| }; | ||
|
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| int rte_acl_gen(struct rte_acl_ctx *ctx, struct rte_acl_trie *trie, | ||
| struct rte_acl_bld_trie *node_bld_trie, uint32_t num_tries, | ||
| uint32_t num_categories, uint32_t data_index_sz, int match_num); | ||
|
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| #ifdef __cplusplus | ||
| } | ||
| #endif /* __cplusplus */ | ||
|
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| #endif /* _ACL_H_ */ |
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