ac948ce17f
Type: fix Change-Id: Ie1153a0e0f1e9770bf3e0de9291131db91724b2e Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/*
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* Copyright (c) 2020 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __CNAT_SRC_POLICY_H__
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#define __CNAT_SRC_POLICY_H__
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// #include <vnet/udp/udp.h>
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#include <cnat/cnat_types.h>
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#include <cnat/cnat_session.h>
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#include <cnat/cnat_translation.h>
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typedef enum
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{
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CNAT_SPORT_PROTO_TCP,
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CNAT_SPORT_PROTO_UDP,
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CNAT_SPORT_PROTO_ICMP,
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CNAT_SPORT_PROTO_ICMP6,
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CNAT_N_SPORT_PROTO
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} cnat_sport_proto_t;
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typedef enum cnat_source_policy_errors_
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{
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CNAT_SOURCE_ERROR_EXHAUSTED_PORTS = 1,
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CNAT_SOURCE_ERROR_USE_DEFAULT = 2,
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} cnat_source_policy_errors_t;
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typedef struct cnat_src_port_allocator_
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{
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/* Source ports bitmap for snat */
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clib_bitmap_t *bmap;
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/* Lock for src_ports access */
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clib_spinlock_t lock;
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} cnat_src_port_allocator_t;
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/* function to use to compute source (IP, port) for a new session to a vip */
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typedef cnat_source_policy_errors_t (*cnat_vip_source_policy_t)
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(vlib_main_t * vm, vlib_buffer_t * b, cnat_session_t * session,
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u32 * rsession_flags, const cnat_translation_t * ct,
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cnat_node_ctx_t * ctx);
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typedef struct cnat_src_policy_main_
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{
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cnat_vip_source_policy_t vip_policy;
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cnat_vip_source_policy_t default_policy;
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/* Per proto source ports allocator for snat */
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cnat_src_port_allocator_t *src_ports;
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} cnat_src_policy_main_t;
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extern cnat_src_policy_main_t cnat_src_policy_main;
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void cnat_register_vip_src_policy (cnat_vip_source_policy_t fp);
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int cnat_allocate_port (u16 * port, ip_protocol_t iproto);
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void cnat_free_port (u16 port, ip_protocol_t iproto);
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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#endif
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