ea3e1fc875
directory and GNU autotools setup. Change-Id: I6c59d1297389c9413db0c0b9bdf3b759080bf1b8 Signed-off-by: Ole Troan <ot@cisco.com>
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
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*------------------------------------------------------------------
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* cnat_va_db.h - definition for virtual assembly database
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*
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* Copyright (c) 2013 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*------------------------------------------------------------------
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*/
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#ifndef __CNAT_VA_DB_H__
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#define __CNAT_VA_DB_H__
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#include <clib_lite.h>
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#define FRAG_DEBUG 1
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/* virtual assemble hash database size ~ 16B x 64K = 1MB */
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#define VA_TOTAL_ENTRIES (64*1024)
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#define VA_ENTRY_PER_BUCKET (8) /* make sure size is power of 2 for circular FIFO */
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#define VA_BUCKET_MASK (VA_ENTRY_PER_BUCKET -1)
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#define VA_BUCKETS (VA_TOTAL_ENTRIES / VA_ENTRY_PER_BUCKET)
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#define VA_KEY_SIZE 12
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typedef struct _va_entry {
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/* key: top 12 bytes */
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u32 src_ip;
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u32 dst_ip;
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u16 vrf; /* overloaded with protocol info with top two bits */
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u16 ip_id;
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/* values */
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u16 src_port;
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u16 dst_port;
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} va_entry_t;
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typedef struct _va_keys {
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u64 key64; /* src & dst IP */
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u32 key32; /* vrf, protocol and ip_id */
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} va_keys;
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typedef union {
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va_entry_t e;
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va_keys k;
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} va_lookup_key;
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typedef struct _va_bucket_t {
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u32 head_entry;
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u32 next_available_entry; /* ~0 for empty bucket */
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u32 new_entry_counter; /* for debug purpose */
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va_entry_t va_entry[VA_ENTRY_PER_BUCKET];
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} va_bucket_t;
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extern va_bucket_t va_bucket[]; /* hash table in cnat_va_db.c */
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void va_bucket_init ();
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inline void va_db_add_new_entry (u32 bucket_index, va_lookup_key * );
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inline int va_db_delete_entry (u32 bucket_index, va_lookup_key * );
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inline va_entry_t * va_db_lookup (u32 bucket_index, va_lookup_key * key);
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#ifdef FRAG_DEBUG
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#define FRAG_DEBUG_PRINTF1(a) \
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if (frag_debug_flag) { \
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PLATFORM_DEBUG_PRINT(a); \
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}
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#define FRAG_DEBUG_PRINTF2(a, b) \
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if (frag_debug_flag) { \
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PLATFORM_DEBUG_PRINT(a, b); \
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}
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#define FRAG_DEBUG_PRINTF3(a, b, c) \
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if (frag_debug_flag) { \
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PLATFORM_DEBUG_PRINT(a, b, c); \
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}
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#define FRAG_DEBUG_PRINTF4(a, b, c, d) \
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if (frag_debug_flag) { \
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PLATFORM_DEBUG_PRINT(a, b, c, d); \
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}
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#define FRAG_DEBUG_PRINTF5(a, b, c, d, e) \
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if (frag_debug_flag) { \
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PLATFORM_DEBUG_PRINT(a, b, c, d, e); \
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}
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#define FRAG_DEBUG_PRINTF6(a, b, c, d, e, f) \
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if (frag_debug_flag) { \
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PLATFORM_DEBUG_PRINT(a, b, c, d, e, f); \
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}
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#else
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#define FRAG_DEBUG_PRINTF1(a)
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#define FRAG_DEBUG_PRINTF2(a, b)
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#define FRAG_DEBUG_PRINTF3(a, b, c)
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#define FRAG_DEBUG_PRINTF4(a, b, c, d)
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#define FRAG_DEBUG_PRINTF5(a, b, c, d, e)
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#define FRAG_DEBUG_PRINTF6(a, b, c, d, e, f)
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#endif
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#endif /* __CNAT_VA_DB_H__ */
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