/* * Copyright (c) 2020 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 port/address allocation lib */ #ifndef included_nat_lib_alloc_h__ #define included_nat_lib_alloc_h__ #include <vnet/ip/ip.h> typedef struct nat_ip4_pool_addr_s nat_ip4_pool_addr_t; typedef struct nat_ip4_addr_port_s nat_ip4_addr_port_t; typedef struct nat_ip4_pool_s nat_ip4_pool_t; typedef void (nat_add_del_ip4_pool_addr_cb_t) (ip4_address_t addr, u8 is_add, void *opaque); typedef int (nat_alloc_ip4_addr_and_port_cb_t) (nat_ip4_pool_t * pool, u32 fib_index, u32 thread_index, u32 nat_thread_index, u16 port_per_thread, u16 protocol, nat_ip4_addr_port_t * out); struct nat_ip4_pool_addr_s { ip4_address_t addr; u32 fib_index; /* *INDENT-OFF* */ #define _(N, i, n, s) \ u16 busy_##n##_ports; \ u16 * busy_##n##_ports_per_thread; \ uword * busy_##n##_port_bitmap; foreach_nat_protocol #undef _ /* *INDENT-ON* */ }; struct nat_ip4_addr_port_s { ip4_address_t addr; u16 port; }; struct nat_ip4_pool_s { nat_add_del_ip4_pool_addr_cb_t *add_del_pool_addr_cb; nat_alloc_ip4_addr_and_port_cb_t *alloc_addr_and_port_cb; nat_ip4_pool_addr_t *pool_addr; u32 random_seed; }; int nat_add_del_ip4_pool_addr (nat_ip4_pool_t * pool, ip4_address_t addr, u8 is_add); int nat_add_del_ip4_pool_addrs (nat_ip4_pool_t * pool, ip4_address_t addr, u32 count, u8 is_add, void *opaque); int nat_alloc_ip4_addr_and_port_cb_default (nat_ip4_pool_t * pool, u32 fib_index, u32 thread_index, u32 nat_thread_index, u16 port_per_thread, u16 protocol, nat_ip4_addr_port_t * out); int nat_alloc_ip4_addr_and_port (nat_ip4_pool_t * pool, u32 fib_index, u32 thread_index, u32 nat_thread_index, u16 port_per_thread, u16 protocol, nat_ip4_addr_port_t * out); int nat_free_ip4_addr_and_port (nat_ip4_pool_t * pool, u32 thread_index, u16 protocol, nat_ip4_addr_port_t * in); #endif /* included_nat_lib_alloc_h__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */