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cnat: Prepare extended snat policies

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Type: refactor

Change-Id: I9ca3333274d6f32b6aff57f0fb3d2049c066337a
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
This commit is contained in:
Nathan Skrzypczak
2021-02-25 17:39:03 +01:00
committed by Dave Barach
parent 8786a4cd4a
commit 3fd77f7dea
14 changed files with 770 additions and 549 deletions
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src/plugins/cnat/cnat_types.h
+5 -26
View File
@@ -37,6 +37,7 @@
#define CNAT_DEFAULT_SESSION_BUCKETS 1024
#define CNAT_DEFAULT_TRANSLATION_BUCKETS 1024
#define CNAT_DEFAULT_SNAT_BUCKETS 1024
#define CNAT_DEFAULT_SNAT_IF_MAP_LEN 4096
#define CNAT_DEFAULT_SESSION_MEMORY (1 << 20)
#define CNAT_DEFAULT_TRANSLATION_MEMORY (256 << 10)
@@ -81,23 +82,6 @@ typedef struct
u16 sequence;
} cnat_echo_header_t;
typedef struct
{
u32 dst_address_length_refcounts[129];
u16 *prefix_lengths_in_search_order;
uword *non_empty_dst_address_length_bitmap;
} cnat_snat_pfx_table_meta_t;
typedef struct
{
/* Stores (ip family, prefix & mask) */
clib_bihash_24_8_t ip_hash;
/* family dependant cache */
cnat_snat_pfx_table_meta_t meta[2];
/* Precomputed ip masks (ip4 & ip6) */
ip6_address_t ip_masks[129];
} cnat_snat_pfx_table_t;
typedef struct cnat_main_
{
/* Memory size of the session bihash */
@@ -118,6 +102,10 @@ typedef struct cnat_main_
/* Number of buckets of the source NAT prefix bihash */
u32 snat_hash_buckets;
/* Bit map for include / exclude sw_if_index
* so max number of expected interfaces */
u32 snat_if_map_length;
/* Timeout after which to clear sessions (in seconds) */
u32 session_max_age;
@@ -131,15 +119,6 @@ typedef struct cnat_main_
/* Lock for the timestamp pool */
clib_rwlock_t ts_lock;
/* Ip4 Address to use for source NATing */
cnat_endpoint_t snat_ip4;
/* Ip6 Address to use for source NATing */
cnat_endpoint_t snat_ip6;
/* Longest prefix Match table for source NATing */
cnat_snat_pfx_table_t snat_pfx_table;
/* Index of the scanner process node */
uword scanner_node_index;