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/*
*------------------------------------------------------------------
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#ifndef _ACL_HASH_LOOKUP_TYPES_H_
#define _ACL_HASH_LOOKUP_TYPES_H_
/* The structure representing the single entry with hash representation */
typedef struct {
/* these two entries refer to the original ACL# and rule# within that ACL */
u32 acl_index;
u32 ace_index;
u32 mask_type_index;
u8 src_portrange_not_powerof2;
u8 dst_portrange_not_powerof2;
fa_5tuple_t match;
u8 action;
} hash_ace_info_t;
/*
* The structure holding the information necessary for the hash-based ACL operation
*/
typedef struct {
/* The mask types present in this ACL */
uword *mask_type_index_bitmap;
/* hash ACL applied on these interfaces */
u32 *inbound_sw_if_index_list;
u32 *outbound_sw_if_index_list;
hash_ace_info_t *rules;
} hash_acl_info_t;
typedef struct {
/* original non-compiled ACL */
u32 acl_index;
u32 ace_index;
/* the index of the hash_ace_info_t */
u32 hash_ace_info_index;
/*
* in case of the same key having multiple entries,
* this holds the index of the next entry.
*/
u32 next_applied_entry_index;
/*
* previous entry in the list of the chained ones,
* if ~0 then this is entry in the hash.
*/
u32 prev_applied_entry_index;
/*
* chain tail, if this is the first entry
*/
u32 tail_applied_entry_index;
/*
* number of hits on this entry
*/
u64 hitcount;
/*
* Action of this applied ACE
*/
u8 action;
} applied_hash_ace_entry_t;
typedef struct {
/*
* A logical OR of all the applied_ace_hash_entry_t=>
* hash_ace_info_t=>mask_type_index bits set
*/
uword *mask_type_index_bitmap;
/* applied ACLs so we can track them independently from main ACL module */
u32 *applied_acls;
} applied_hash_acl_info_t;
typedef union {
u64 as_u64;
struct {
u32 applied_entry_index;
u16 reserved_u16;
u8 reserved_u8;
/* means there is some other entry in front intersecting with this one */
u8 shadowed:1;
u8 need_portrange_check:1;
u8 reserved_flags:6;
};
} hash_acl_lookup_value_t;
#define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
CT_ASSERT_EQUAL(hash_acl_lookup_value_t_is_u64, sizeof(hash_acl_lookup_value_t), sizeof(u64));
#undef CT_ASSERT_EQUAL
#endif
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