+++ /dev/null
-/*
- * Copyright (c) 2018 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 NAT66 implementation
- */
-
-#include <nat/nat66.h>
-#include <vnet/fib/fib_table.h>
-#include <vnet/ip/reass/ip6_sv_reass.h>
-
-nat66_main_t nat66_main;
-
-/* *INDENT-OFF* */
-
-/* Hook up input features */
-VNET_FEATURE_INIT (nat66_in2out, static) = {
- .arc_name = "ip6-unicast",
- .node_name = "nat66-in2out",
- .runs_before = VNET_FEATURES ("ip6-lookup"),
- .runs_after = VNET_FEATURES ("ip6-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (nat66_out2in, static) = {
- .arc_name = "ip6-unicast",
- .node_name = "nat66-out2in",
- .runs_before = VNET_FEATURES ("ip6-lookup"),
- .runs_after = VNET_FEATURES ("ip6-sv-reassembly-feature"),
-};
-
-/* *INDENT-ON* */
-
-
-void
-nat66_init (vlib_main_t * vm)
-{
- nat66_main_t *nm = &nat66_main;
- vlib_node_t *node;
- u32 static_mapping_buckets = 1024;
- uword static_mapping_memory_size = 64 << 20;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat66-in2out");
- nm->in2out_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat66-out2in");
- nm->out2in_node_index = node->index;
-
- clib_bihash_init_24_8 (&nm->sm_l, "nat66-static-map-by-local",
- static_mapping_buckets, static_mapping_memory_size);
- clib_bihash_init_24_8 (&nm->sm_e, "nat66-static-map-by-external",
- static_mapping_buckets, static_mapping_memory_size);
-
- nm->session_counters.name = "session counters";
-}
-
-int
-nat66_interface_add_del (u32 sw_if_index, u8 is_inside, u8 is_add)
-{
- nat66_main_t *nm = &nat66_main;
- snat_interface_t *interface = 0, *i;
- const char *feature_name;
-
- /* *INDENT-OFF* */
- pool_foreach (i, nm->interfaces,
- ({
- if (i->sw_if_index == sw_if_index)
- {
- interface = i;
- break;
- }
- }));
- /* *INDENT-ON* */
-
- if (is_add)
- {
- if (interface)
- return VNET_API_ERROR_VALUE_EXIST;
-
- pool_get (nm->interfaces, interface);
- interface->sw_if_index = sw_if_index;
- interface->flags =
- is_inside ? NAT_INTERFACE_FLAG_IS_INSIDE :
- NAT_INTERFACE_FLAG_IS_OUTSIDE;
- }
- else
- {
- if (!interface)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- pool_put (nm->interfaces, interface);
- }
-
- feature_name = is_inside ? "nat66-in2out" : "nat66-out2in";
- int rv = ip6_sv_reass_enable_disable_with_refcnt (sw_if_index, is_add);
- if (rv)
- return rv;
- return vnet_feature_enable_disable ("ip6-unicast", feature_name,
- sw_if_index, is_add, 0, 0);
-}
-
-void
-nat66_interfaces_walk (nat66_interface_walk_fn_t fn, void *ctx)
-{
- nat66_main_t *nm = &nat66_main;
- snat_interface_t *i = 0;
-
- /* *INDENT-OFF* */
- pool_foreach (i, nm->interfaces,
- ({
- if (fn (i, ctx))
- break;
- }));
- /* *INDENT-ON* */
-}
-
-nat66_static_mapping_t *
-nat66_static_mapping_get (ip6_address_t * addr, u32 fib_index, u8 is_local)
-{
- nat66_main_t *nm = &nat66_main;
- nat66_static_mapping_t *sm = 0;
- nat66_sm_key_t sm_key;
- clib_bihash_kv_24_8_t kv, value;
-
- sm_key.addr.as_u64[0] = addr->as_u64[0];
- sm_key.addr.as_u64[1] = addr->as_u64[1];
- sm_key.fib_index = fib_index;
- sm_key.rsvd = 0;
-
- kv.key[0] = sm_key.as_u64[0];
- kv.key[1] = sm_key.as_u64[1];
- kv.key[2] = sm_key.as_u64[2];
-
- if (!clib_bihash_search_24_8
- (is_local ? &nm->sm_l : &nm->sm_e, &kv, &value))
- sm = pool_elt_at_index (nm->sm, value.value);
-
- return sm;
-}
-
-int
-nat66_static_mapping_add_del (ip6_address_t * l_addr, ip6_address_t * e_addr,
- u32 vrf_id, u8 is_add)
-{
- nat66_main_t *nm = &nat66_main;
- int rv = 0;
- nat66_static_mapping_t *sm = 0;
- nat66_sm_key_t sm_key;
- clib_bihash_kv_24_8_t kv, value;
- u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, vrf_id);
-
- sm_key.addr.as_u64[0] = l_addr->as_u64[0];
- sm_key.addr.as_u64[1] = l_addr->as_u64[1];
- sm_key.fib_index = fib_index;
- sm_key.rsvd = 0;
- kv.key[0] = sm_key.as_u64[0];
- kv.key[1] = sm_key.as_u64[1];
- kv.key[2] = sm_key.as_u64[2];
-
- if (!clib_bihash_search_24_8 (&nm->sm_l, &kv, &value))
- sm = pool_elt_at_index (nm->sm, value.value);
-
- if (is_add)
- {
- if (sm)
- return VNET_API_ERROR_VALUE_EXIST;
-
- fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, vrf_id,
- nat_fib_src_hi);
- pool_get (nm->sm, sm);
- clib_memset (sm, 0, sizeof (*sm));
- sm->l_addr.as_u64[0] = l_addr->as_u64[0];
- sm->l_addr.as_u64[1] = l_addr->as_u64[1];
- sm->e_addr.as_u64[0] = e_addr->as_u64[0];
- sm->e_addr.as_u64[1] = e_addr->as_u64[1];
- sm->fib_index = fib_index;
-
- sm_key.fib_index = fib_index;
- kv.key[0] = sm_key.as_u64[0];
- kv.key[1] = sm_key.as_u64[1];
- kv.key[2] = sm_key.as_u64[2];
- kv.value = sm - nm->sm;
- if (clib_bihash_add_del_24_8 (&nm->sm_l, &kv, 1))
- nat_elog_warn ("nat66-static-map-by-local add key failed");
- sm_key.addr.as_u64[0] = e_addr->as_u64[0];
- sm_key.addr.as_u64[1] = e_addr->as_u64[1];
- sm_key.fib_index = 0;
- kv.key[0] = sm_key.as_u64[0];
- kv.key[1] = sm_key.as_u64[1];
- kv.key[2] = sm_key.as_u64[2];
- if (clib_bihash_add_del_24_8 (&nm->sm_e, &kv, 1))
- nat_elog_warn ("nat66-static-map-by-external add key failed");
-
- vlib_validate_combined_counter (&nm->session_counters, kv.value);
- vlib_zero_combined_counter (&nm->session_counters, kv.value);
- }
- else
- {
- if (!sm)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- kv.value = sm - nm->sm;
- if (clib_bihash_add_del_24_8 (&nm->sm_l, &kv, 0))
- nat_elog_warn ("nat66-static-map-by-local delete key failed");
- sm_key.addr.as_u64[0] = e_addr->as_u64[0];
- sm_key.addr.as_u64[1] = e_addr->as_u64[1];
- sm_key.fib_index = 0;
- kv.key[0] = sm_key.as_u64[0];
- kv.key[1] = sm_key.as_u64[1];
- kv.key[2] = sm_key.as_u64[2];
- if (clib_bihash_add_del_24_8 (&nm->sm_e, &kv, 0))
- nat_elog_warn ("nat66-static-map-by-external delete key failed");
- fib_table_unlock (sm->fib_index, FIB_PROTOCOL_IP6, nat_fib_src_hi);
- pool_put (nm->sm, sm);
- }
-
- return rv;
-}
-
-void
-nat66_static_mappings_walk (nat66_static_mapping_walk_fn_t fn, void *ctx)
-{
- nat66_main_t *nm = &nat66_main;
- nat66_static_mapping_t *sm = 0;
-
- /* *INDENT-OFF* */
- pool_foreach (sm, nm->sm,
- ({
- if (fn (sm, ctx))
- break;
- }));
- /* *INDENT-ON* */
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff