nat: use SVR

Remove NAT's implementation of shallow virtual reassembly with
corresponding CLIs, APIs & tests. Replace with standalone shallow
virtual reassembly provided by ipX-sv-reass* nodes.

Type: refactor
Change-Id: I7e6c7487a5a500d591f6871474a359e0993e59b6
Signed-off-by: Klement Sekera <ksekera@cisco.com>

1 files changed, 0 insertions, 340 deletions

diff --git a/src/plugins/nat/nat_reass.h b/src/plugins/nat/nat_reass.h
deleted file mode 100644
index 11f9db5a252..00000000000
--- a/src/plugins/nat/nat_reass.h
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- * 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.
- */
-/**
- * @file
- * @brief NAT plugin virtual fragmentation reassembly
- */
-#ifndef __included_nat_reass_h__
-#define __included_nat_reass_h__
-
-#include <vnet/vnet.h>
-#include <vnet/ip/ip.h>
-#include <vppinfra/bihash_16_8.h>
-#include <vppinfra/bihash_48_8.h>
-#include <vppinfra/dlist.h>
-
-#define NAT_REASS_TIMEOUT_DEFAULT 2
-#define NAT_MAX_REASS_DEAFULT 1024
-#define NAT_MAX_FRAG_DEFAULT 5
-#define NAT_REASS_HT_LOAD_FACTOR (0.75)
-
-#define NAT_REASS_FLAG_MAX_FRAG_DROP 1
-#define NAT_REASS_FLAG_CLASSIFY_ED_CONTINUE 2
-#define NAT_REASS_FLAG_ED_DONT_TRANSLATE 4
-
-typedef struct
-{
-  union
-  {
-    struct
-    {
-      ip4_address_t src;
-      ip4_address_t dst;
-      /* align by making this 4 octets even though its a 2 octets field */
-      u32 frag_id;
-      /* align by making this 4 octets even though its a 1 octet field */
-      u32 proto;
-    };
-    u64 as_u64[2];
-  };
-} nat_reass_ip4_key_t;
-
-enum
-{
-  NAT_REASS_IP4_CLASSIFY_NONE,
-  NAT_REASS_IP4_CLASSIFY_NEXT_IN2OUT,
-  NAT_REASS_IP4_CLASSIFY_NEXT_OUT2IN
-};
-
-/* *INDENT-OFF* */
-typedef CLIB_PACKED(struct
-{
-  nat_reass_ip4_key_t key;
-  u32 lru_list_index;
-  u32 sess_index;
-  u32 thread_index;
-  f64 last_heard;
-  u32 frags_per_reass_list_head_index;
-  u8 frag_n;
-  u8 flags;
-  u8 classify_next;
-}) nat_reass_ip4_t;
-/* *INDENT-ON* */
-
-typedef struct
-{
-  union
-  {
-    struct
-    {
-      ip6_address_t src;
-      ip6_address_t dst;
-      u32 frag_id;
-      /* align by making this 4 octets even though its a 1 octet field */
-      u32 proto;
-      u64 unused;
-    };
-    u64 as_u64[6];
-  };
-} nat_reass_ip6_key_t;
-
-/* *INDENT-OFF* */
-typedef CLIB_PACKED(struct
-{
-  nat_reass_ip6_key_t key;
-  u32 lru_list_index;
-  u32 sess_index;
-  f64 last_heard;
-  u32 frags_per_reass_list_head_index;
-  u8 frag_n;
-  u8 flags;
-}) nat_reass_ip6_t;
-/* *INDENT-ON* */
-
-typedef struct
-{
-  /* IPv4 config */
-  u32 ip4_timeout;
-  u16 ip4_max_reass;
-  u8 ip4_max_frag;
-  u8 ip4_drop_frag;
-
-  /* IPv6 config */
-  u32 ip6_timeout;
-  u16 ip6_max_reass;
-  u8 ip6_max_frag;
-  u8 ip6_drop_frag;
-
-  /* IPv4 runtime */
-  nat_reass_ip4_t *ip4_reass_pool;
-  clib_bihash_16_8_t ip4_reass_hash;
-  dlist_elt_t *ip4_reass_lru_list_pool;
-  dlist_elt_t *ip4_frags_list_pool;
-  u32 ip4_reass_head_index;
-  u16 ip4_reass_n;
-  clib_spinlock_t ip4_reass_lock;
-
-  /* IPv6 runtime */
-  nat_reass_ip6_t *ip6_reass_pool;
-  clib_bihash_48_8_t ip6_reass_hash;
-  dlist_elt_t *ip6_reass_lru_list_pool;
-  dlist_elt_t *ip6_frags_list_pool;
-  u32 ip6_reass_head_index;
-  u16 ip6_reass_n;
-  clib_spinlock_t ip6_reass_lock;
-
-  /* convenience */
-  vlib_main_t *vlib_main;
-  vnet_main_t *vnet_main;
-} nat_reass_main_t;
-
-/**
- * @brief Set NAT virtual fragmentation reassembly configuration.
- *
- * @param timeout   Reassembly timeout.
- * @param max_reass Maximum number of concurrent reassemblies.
- * @param max_frag  Maximum number of fragmets per reassembly
- * @param drop_frag If zero translate fragments, otherwise drop fragments.
- * @param is_ip6    1 if IPv6, 0 if IPv4.
- *
- * @returns 0 on success, non-zero value otherwise.
- */
-int nat_reass_set (u32 timeout, u16 max_reass, u8 max_frag, u8 drop_frag,
-		   u8 is_ip6);
-
-/**
- * @brief Get reassembly timeout.
- *
- * @param is_ip6 1 if IPv6, 0 if IPv4.
- *
- * @returns reassembly timeout.
- */
-u32 nat_reass_get_timeout (u8 is_ip6);
-
-/**
- * @brief Get maximum number of concurrent reassemblies.
- *
- * @param is_ip6 1 if IPv6, 0 if IPv4.
- *
- * @returns maximum number of concurrent reassemblies.
- */
-u16 nat_reass_get_max_reass (u8 is_ip6);
-
-/**
- * @brief Get maximum number of fragmets per reassembly.
- *
- * @param is_ip6 1 if IPv6, 0 if IPv4.
- *
- * @returns maximum number of fragmets per reassembly.
- */
-u8 nat_reass_get_max_frag (u8 is_ip6);
-
-/**
- * @brief Get status of virtual fragmentation reassembly.
- *
- * @param is_ip6 1 if IPv6, 0 if IPv4.
- *
- * @returns zero if translate fragments, non-zero value if drop fragments.
- */
-u8 nat_reass_is_drop_frag (u8 is_ip6);
-
-/**
- * @brief Initialize NAT virtual fragmentation reassembly.
- *
- * @param vm vlib main.
- *
- * @return error code.
- */
-clib_error_t *nat_reass_init (vlib_main_t * vm);
-
-/**
- * @brief Find reassembly.
- *
- * @param src Source IPv4 address.
- * @param dst Destination IPv4 address.
- * @param frag_id Fragment ID.
- * @param proto L4 protocol.
- *
- * @returns Reassembly data or 0 if not found.
- */
-nat_reass_ip4_t *nat_ip4_reass_find (ip4_address_t src,
-				     ip4_address_t dst,
-				     u16 frag_id, u8 proto);
-
-/**
- * @brief Create reassembly.
- *
- * @param src Source IPv4 address.
- * @param dst Destination IPv4 address.
- * @param frag_id Fragment ID.
- * @param proto L4 protocol.
- *
- * @returns Reassembly data or 0 on failure.
- */
-nat_reass_ip4_t *nat_ip4_reass_create (ip4_address_t src, ip4_address_t dst,
-				       u16 frag_id, u8 proto);
-
-/**
- * @brief Find or create reassembly.
- *
- * @param src Source IPv4 address.
- * @param dst Destination IPv4 address.
- * @param frag_id Fragment ID.
- * @param proto L4 protocol.
- * @param reset_timeout If non-zero value reset timeout.
- * @param bi_to_drop Fragments to drop.
- *
- * @returns Reassembly data or 0 on failure.
- */
-nat_reass_ip4_t *nat_ip4_reass_find_or_create (ip4_address_t src,
-					       ip4_address_t dst,
-					       u16 frag_id, u8 proto,
-					       u8 reset_timeout,
-					       u32 ** bi_to_drop);
-
-/**
- * @brief Cache fragment.
- *
- * @param reass Reassembly data.
- * @param bi Buffer index.
- * @param bi_to_drop Fragments to drop.
- *
- * @returns 0 on success, non-zero value otherwise.
- */
-int nat_ip4_reass_add_fragment (u32 thread_index, nat_reass_ip4_t * reass,
-				u32 bi, u32 ** bi_to_drop);
-
-/**
- * @brief Get cached fragments.
- *
- * @param reass Reassembly data.
- * @param bi Vector of buffer indexes.
- */
-void nat_ip4_reass_get_frags (nat_reass_ip4_t * reass, u32 ** bi);
-
-/**
- * @breif Call back function when walking IPv4 reassemblies, non-zero return
- * value stop walk.
- */
-typedef int (*nat_ip4_reass_walk_fn_t) (nat_reass_ip4_t * reass, void *ctx);
-
-/**
- * @brief Walk IPv4 reassemblies.
- *
- * @param fn The function to invoke on each entry visited.
- * @param ctx A context passed in the visit function.
- */
-void nat_ip4_reass_walk (nat_ip4_reass_walk_fn_t fn, void *ctx);
-
-/**
- * @brief Find or create reassembly.
- *
- * @param src Source IPv6 address.
- * @param dst Destination IPv6 address.
- * @param frag_id Fragment ID.
- * @param proto L4 protocol.
- * @param reset_timeout If non-zero value reset timeout.
- * @param bi_to_drop Fragments to drop.
- *
- * @returns Reassembly data or 0 on failure.
- */
-nat_reass_ip6_t *nat_ip6_reass_find_or_create (ip6_address_t src,
-					       ip6_address_t dst,
-					       u32 frag_id, u8 proto,
-					       u8 reset_timeout,
-					       u32 ** bi_to_drop);
-/**
- * @brief Cache fragment.
- *
- * @param reass Reassembly data.
- * @param bi Buffer index.
- * @param bi_to_drop Fragments to drop.
- *
- * @returns 0 on success, non-zero value otherwise.
- */
-int nat_ip6_reass_add_fragment (u32 thread_index, nat_reass_ip6_t * reass,
-				u32 bi, u32 ** bi_to_drop);
-
-/**
- * @brief Get cached fragments.
- *
- * @param reass Reassembly data.
- * @param bi Vector of buffer indexes.
- */
-void nat_ip6_reass_get_frags (nat_reass_ip6_t * reass, u32 ** bi);
-
-/**
- * @breif Call back function when walking IPv6 reassemblies, non-zero return
- * value stop walk.
- */
-typedef int (*nat_ip6_reass_walk_fn_t) (nat_reass_ip6_t * reass, void *ctx);
-
-/**
- * @brief Walk IPv6 reassemblies.
- *
- * @param fn The function to invoke on each entry visited.
- * @param ctx A context passed in the visit function.
- */
-void nat_ip6_reass_walk (nat_ip6_reass_walk_fn_t fn, void *ctx);
-
-#endif /* __included_nat_reass_h__ */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */