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authorMatus Fabian <matfabia@cisco.com>2017-08-21 07:05:03 -0700
committerOle Trøan <otroan@employees.org>2017-08-23 07:42:10 +0000
commit2ba92e32e0197f676dd905e5edcb4ff3e1bec241 (patch)
tree4d5eba20eda422bde4e9218834e1b8662a43b001 /src/plugins/snat/snat_det.h
parentcfc997ef3da9f406afe5caad99fc98a53aab7a77 (diff)
NAT: Rename snat plugin to nat (VPP-955)
Change-Id: I30a7e3da7a4efc6038a91e27b48045d4b07e2764 Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/snat/snat_det.h')
-rw-r--r--src/plugins/snat/snat_det.h196
1 files changed, 0 insertions, 196 deletions
diff --git a/src/plugins/snat/snat_det.h b/src/plugins/snat/snat_det.h
deleted file mode 100644
index f4fdb256637..00000000000
--- a/src/plugins/snat/snat_det.h
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * snat_det.h - deterministic nat definitions
- *
- * 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 deterministic NAT definitions
- */
-
-#ifndef __included_snat_det_h__
-#define __included_snat_det_h__
-
-#include <vnet/ip/ip.h>
-#include <snat/snat.h>
-#include <snat/snat_ipfix_logging.h>
-
-
-#define SNAT_DET_SES_PER_USER 1000
-
-
-int snat_det_add_map (snat_main_t * sm, ip4_address_t * in_addr, u8 in_plen,
- ip4_address_t * out_addr, u8 out_plen, int is_add);
-
-always_inline int
-is_addr_in_net (ip4_address_t * addr, ip4_address_t * net, u8 plen)
-{
- if (net->as_u32 == (addr->as_u32 & ip4_main.fib_masks[plen]))
- return 1;
- return 0;
-}
-
-always_inline snat_det_map_t *
-snat_det_map_by_user (snat_main_t * sm, ip4_address_t * user_addr)
-{
- snat_det_map_t *dm;
-
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- if (is_addr_in_net(user_addr, &dm->in_addr, dm->in_plen))
- return dm;
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-always_inline snat_det_map_t *
-snat_det_map_by_out (snat_main_t * sm, ip4_address_t * out_addr)
-{
- snat_det_map_t *dm;
-
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- if (is_addr_in_net(out_addr, &dm->out_addr, dm->out_plen))
- return dm;
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-always_inline void
-snat_det_forward (snat_det_map_t * dm, ip4_address_t * in_addr,
- ip4_address_t * out_addr, u16 * lo_port)
-{
- u32 in_offset, out_offset;
-
- in_offset = clib_net_to_host_u32 (in_addr->as_u32) -
- clib_net_to_host_u32 (dm->in_addr.as_u32);
- out_offset = in_offset / dm->sharing_ratio;
- out_addr->as_u32 =
- clib_host_to_net_u32 (clib_net_to_host_u32 (dm->out_addr.as_u32) +
- out_offset);
- *lo_port = 1024 + dm->ports_per_host * (in_offset % dm->sharing_ratio);
-}
-
-always_inline void
-snat_det_reverse (snat_det_map_t * dm, ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * in_addr)
-{
- u32 in_offset1, in_offset2, out_offset;
-
- out_offset = clib_net_to_host_u32 (out_addr->as_u32) -
- clib_net_to_host_u32 (dm->out_addr.as_u32);
- in_offset1 = out_offset * dm->sharing_ratio;
- in_offset2 = (out_port - 1024) / dm->ports_per_host;
- in_addr->as_u32 =
- clib_host_to_net_u32 (clib_net_to_host_u32 (dm->in_addr.as_u32) +
- in_offset1 + in_offset2);
-}
-
-always_inline u32
-snat_det_user_ses_offset (ip4_address_t * addr, u8 plen)
-{
- return (clib_net_to_host_u32 (addr->as_u32) & pow2_mask (32 - plen)) *
- SNAT_DET_SES_PER_USER;
-}
-
-always_inline snat_det_session_t *
-snat_det_get_ses_by_out (snat_det_map_t * dm, ip4_address_t * in_addr,
- u64 out_key)
-{
- u32 user_offset;
- u16 i;
-
- user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- if (dm->sessions[i + user_offset].out.as_u64 == out_key)
- return &dm->sessions[i + user_offset];
- }
-
- return 0;
-}
-
-always_inline snat_det_session_t *
-snat_det_find_ses_by_in (snat_det_map_t * dm, ip4_address_t * in_addr,
- u16 in_port, snat_det_out_key_t out_key)
-{
- snat_det_session_t *ses;
- u32 user_offset;
- u16 i;
-
- user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- ses = &dm->sessions[i + user_offset];
- if (ses->in_port == in_port &&
- ses->out.ext_host_addr.as_u32 == out_key.ext_host_addr.as_u32 &&
- ses->out.ext_host_port == out_key.ext_host_port)
- return &dm->sessions[i + user_offset];
- }
-
- return 0;
-}
-
-always_inline snat_det_session_t *
-snat_det_ses_create (snat_det_map_t * dm, ip4_address_t * in_addr,
- u16 in_port, snat_det_out_key_t * out)
-{
- u32 user_offset;
- u16 i;
-
- user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
-
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- if (!dm->sessions[i + user_offset].in_port)
- {
- if (__sync_bool_compare_and_swap
- (&dm->sessions[i + user_offset].in_port, 0, in_port))
- {
- dm->sessions[i + user_offset].out.as_u64 = out->as_u64;
- dm->sessions[i + user_offset].state = SNAT_SESSION_UNKNOWN;
- dm->sessions[i + user_offset].expire = 0;
- __sync_add_and_fetch (&dm->ses_num, 1);
- return &dm->sessions[i + user_offset];
- }
- }
- }
-
- snat_ipfix_logging_max_entries_per_user (in_addr->as_u32);
- return 0;
-}
-
-always_inline void
-snat_det_ses_close (snat_det_map_t * dm, snat_det_session_t * ses)
-{
- if (__sync_bool_compare_and_swap (&ses->in_port, ses->in_port, 0))
- {
- ses->out.as_u64 = 0;
- __sync_add_and_fetch (&dm->ses_num, -1);
- }
-}
-
-#endif /* __included_snat_det_h__ */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */