/* * 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 NAT64 DB */ #include #include #include #include #include int nat64_db_init (nat64_db_t * db, u32 bib_buckets, u32 bib_memory_size, u32 st_buckets, u32 st_memory_size, nat64_db_free_addr_port_function_t free_addr_port_cb) { clib_bihash_init_24_8 (&db->bib.in2out, "bib-in2out", bib_buckets, bib_memory_size); clib_bihash_init_24_8 (&db->bib.out2in, "bib-out2in", bib_buckets, bib_memory_size); clib_bihash_init_48_8 (&db->st.in2out, "st-in2out", st_buckets, st_memory_size); clib_bihash_init_48_8 (&db->st.out2in, "st-out2in", st_buckets, st_memory_size); db->free_addr_port_cb = free_addr_port_cb; db->bib.limit = 10 * bib_buckets; db->bib.bib_entries_num = 0; db->st.limit = 10 * st_buckets; db->st.st_entries_num = 0; db->addr_free = 0; return 0; } nat64_db_bib_entry_t * nat64_db_bib_entry_create (u32 thread_index, nat64_db_t * db, ip6_address_t * in_addr, ip4_address_t * out_addr, u16 in_port, u16 out_port, u32 fib_index, u8 proto, u8 is_static) { nat64_db_bib_entry_t *bibe; nat64_db_bib_entry_key_t bibe_key; clib_bihash_kv_24_8_t kv; fib_table_t *fib; if (db->bib.bib_entries_num >= db->bib.limit) { db->free_addr_port_cb (db, out_addr, out_port, proto); nat_ipfix_logging_max_bibs (thread_index, db->bib.limit); return 0; } /* create pool entry */ switch (ip_proto_to_snat_proto (proto)) { /* *INDENT-OFF* */ #define _(N, i, n, s) \ case SNAT_PROTOCOL_##N: \ pool_get (db->bib._##n##_bib, bibe); \ kv.value = bibe - db->bib._##n##_bib; \ break; foreach_snat_protocol #undef _ /* *INDENT-ON* */ default: pool_get (db->bib._unk_proto_bib, bibe); kv.value = bibe - db->bib._unk_proto_bib; break; } db->bib.bib_entries_num++; clib_memset (bibe, 0, sizeof (*bibe)); bibe->in_addr.as_u64[0] = in_addr->as_u64[0]; bibe->in_addr.as_u64[1] = in_addr->as_u64[1]; bibe->in_port = in_port; bibe->out_addr.as_u32 = out_addr->as_u32; bibe->out_port = out_port; bibe->fib_index = fib_index; bibe->proto = proto; bibe->is_static = is_static; /* create hash lookup */ bibe_key.addr.as_u64[0] = bibe->in_addr.as_u64[0]; bibe_key.addr.as_u64[1] = bibe->in_addr.as_u64[1]; bibe_key.fib_index = bibe->fib_index; bibe_key.port = bibe->in_port; bibe_key.proto = bibe->proto; bibe_key.rsvd = 0; kv.key[0] = bibe_key.as_u64[0]; kv.key[1] = bibe_key.as_u64[1]; kv.key[2] = bibe_key.as_u64[2]; clib_bihash_add_del_24_8 (&db->bib.in2out, &kv, 1); clib_memset (&bibe_key.addr, 0, sizeof (bibe_key.addr)); bibe_key.addr.ip4.as_u32 = bibe->out_addr.as_u32; bibe_key.fib_index = 0; bibe_key.port = bibe->out_port; kv.key[0] = bibe_key.as_u64[0]; kv.key[1] = bibe_key.as_u64[1]; kv.key[2] = bibe_key.as_u64[2]; clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 1); fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6); nat_ipfix_logging_nat64_bib (thread_index, in_addr, out_addr, proto, in_port, out_port, fib->ft_table_id, 1); return bibe; } void nat64_db_bib_entry_free (u32 thread_index, nat64_db_t * db, nat64_db_bib_entry_t * bibe) { nat64_db_bib_entry_key_t bibe_key; clib_bihash_kv_24_8_t kv; nat64_db_bib_entry_t *bib; u32 *ste_to_be_free = 0, *ste_index, bibe_index; nat64_db_st_entry_t *st, *ste; fib_table_t *fib; switch (ip_proto_to_snat_proto (bibe->proto)) { /* *INDENT-OFF* */ #define _(N, i, n, s) \ case SNAT_PROTOCOL_##N: \ bib = db->bib._##n##_bib; \ st = db->st._##n##_st; \ break; foreach_snat_protocol #undef _ /* *INDENT-ON* */ default: bib = db->bib._unk_proto_bib; st = db->st._unk_proto_st; break; } db->bib.bib_entries_num--; bibe_index = bibe - bib; /* delete ST entries for static BIB entry */ if (bibe->is_static) { pool_foreach (ste, st, ( { if (ste->bibe_index == bibe_index) vec_add1 (ste_to_be_free, ste - st);} )); vec_foreach (ste_index, ste_to_be_free) nat64_db_st_entry_free (thread_index, db, pool_elt_at_index (st, ste_index[0])); vec_free (ste_to_be_free); } /* delete hash lookup */ bibe_key.addr.as_u64[0] = bibe->in_addr.as_u64[0]; bibe_key.addr.as_u64[1] = bibe->in_addr.as_u64[1]; bibe_key.fib_index = bibe->fib_index; bibe_key.port = bibe->in_port; bibe_key.proto = bibe->proto; bibe_key.rsvd = 0; kv.key[0] = bibe_key.as_u64[0]; kv.key[1] = bibe_key.as_u64[1]; kv.key[2] = bibe_key.as_u64[2]; clib_bihash_add_del_24_8 (&db->bib.in2out, &kv, 0); clib_memset (&bibe_key.addr, 0, sizeof (bibe_key.addr)); bibe_key.addr.ip4.as_u32 = bibe->out_addr.as_u32; bibe_key.fib_index = 0; bibe_key.port = bibe->out_port; kv.key[0] = bibe_key.as_u64[0]; kv.key[1] = bibe_key.as_u64[1]; kv.key[2] = bibe_key.as_u64[2]; clib_bi
/*
 * 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.
 */
#ifndef included_gbp_msg_enum_h
#define included_gbp_msg_enum_h

#include <vppinfra/byte_order.h>

#define vl_msg_id(n,h) n,
typedef enum {
#include <gbp/gbp_all_api_h.h>
    /* We'll want to know how many messages IDs we need... */
    VL_MSG_FIRST_AVAILABLE,
} vl_msg_id_t;
#undef vl_msg_id

#endif
N: \ st = db->st._##n##_st; \ break; foreach_snat_protocol #undef _ /* *INDENT-ON* */ default: st = db->st._unk_proto_st; break; } return pool_elt_at_index (st, ste_index); } void nad64_db_st_free_expired (u32 thread_index, nat64_db_t * db, u32 now) { u32 *ste_to_be_free = 0, *ste_index; nat64_db_st_entry_t *st, *ste; /* *INDENT-OFF* */ #define _(N, i, n, s) \ st = db->st._##n##_st; \ pool_foreach (ste, st, ({\ if (i == SNAT_PROTOCOL_TCP && !ste->tcp_state) \ continue; \ if (ste->expire < now) \ vec_add1 (ste_to_be_free, ste - st); \ })); \ vec_foreach (ste_index, ste_to_be_free) \ nat64_db_st_entry_free (thread_index, db, \ pool_elt_at_index(st, ste_index[0])); \ vec_free (ste_to_be_free); \ ste_to_be_free = 0; foreach_snat_protocol #undef _ st = db->st._unk_proto_st; pool_foreach (ste, st, ({ if (ste->expire < now) vec_add1 (ste_to_be_free, ste - st); })); vec_foreach (ste_index, ste_to_be_free) nat64_db_st_entry_free (thread_index, db, pool_elt_at_index(st, ste_index[0])); vec_free (ste_to_be_free); /* *INDENT-ON* */ } void nat64_db_free_out_addr (u32 thread_index, nat64_db_t * db, ip4_address_t * out_addr) { u32 *ste_to_be_free = 0, *ste_index; nat64_db_st_entry_t *st, *ste; nat64_db_bib_entry_t *bibe; db->addr_free = 1; /* *INDENT-OFF* */ #define _(N, i, n, s) \ st = db->st._##n##_st; \ pool_foreach (ste, st, ({ \ bibe = pool_elt_at_index (db->bib._##n##_bib, ste->bibe_index); \ if (bibe->out_addr.as_u32 == out_addr->as_u32) \ vec_add1 (ste_to_be_free, ste - st); \ })); \ vec_foreach (ste_index, ste_to_be_free) \ nat64_db_st_entry_free (thread_index, db, \ pool_elt_at_index(st, ste_index[0])); \ vec_free (ste_to_be_free); \ ste_to_be_free = 0; foreach_snat_protocol #undef _ st = db->st._unk_proto_st; pool_foreach (ste, st, ({ bibe = pool_elt_at_index (db->bib._unk_proto_bib, ste->bibe_index); if (bibe->out_addr.as_u32 == out_addr->as_u32) vec_add1 (ste_to_be_free, ste - st); })); vec_foreach (ste_index, ste_to_be_free) nat64_db_st_entry_free (thread_index, db, pool_elt_at_index(st, ste_index[0])); vec_free (ste_to_be_free); db->addr_free = 0; /* *INDENT-ON* */ } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */