2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 #include <vnet/ip/ip.h>
19 #include <vnet/ipsec/ipsec.h>
20 #include <vnet/ipsec/ipsec.api_enum.h>
24 unsigned char nexthdr;
26 unsigned short reserved;
29 unsigned char auth_data[0];
33 typedef CLIB_PACKED (struct {
36 }) ip4_and_ah_header_t;
38 typedef CLIB_PACKED (struct {
41 }) ip6_and_ah_header_t;
44 ah_encrypt_err_to_sa_err (u32 err)
48 case AH_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR:
49 return IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR;
50 case AH_ENCRYPT_ERROR_SEQ_CYCLED:
51 return IPSEC_SA_ERROR_SEQ_CYCLED;
57 ah_decrypt_err_to_sa_err (u32 err)
61 case AH_DECRYPT_ERROR_DECRYPTION_FAILED:
62 return IPSEC_SA_ERROR_DECRYPTION_FAILED;
63 case AH_DECRYPT_ERROR_INTEG_ERROR:
64 return IPSEC_SA_ERROR_INTEG_ERROR;
65 case AH_DECRYPT_ERROR_NO_TAIL_SPACE:
66 return IPSEC_SA_ERROR_NO_TAIL_SPACE;
67 case AH_DECRYPT_ERROR_DROP_FRAGMENTS:
68 return IPSEC_SA_ERROR_DROP_FRAGMENTS;
69 case AH_DECRYPT_ERROR_REPLAY:
70 return IPSEC_SA_ERROR_REPLAY;
76 ah_encrypt_set_next_index (vlib_buffer_t *b, vlib_node_runtime_t *node,
77 u32 thread_index, u32 err, u16 index, u16 *nexts,
78 u16 drop_next, u32 sa_index)
80 ipsec_set_next_index (b, node, thread_index, err,
81 ah_encrypt_err_to_sa_err (err), index, nexts,
86 ah_decrypt_set_next_index (vlib_buffer_t *b, vlib_node_runtime_t *node,
87 u32 thread_index, u32 err, u16 index, u16 *nexts,
88 u16 drop_next, u32 sa_index)
90 ipsec_set_next_index (b, node, thread_index, err,
91 ah_decrypt_err_to_sa_err (err), index, nexts,
96 ah_calc_icv_padding_len (u8 icv_size, int is_ipv6)
98 ASSERT (0 == is_ipv6 || 1 == is_ipv6);
99 const u8 req_multiple = 4 + 4 * is_ipv6; // 4 for ipv4, 8 for ipv6
100 const u8 total_size = sizeof (ah_header_t) + icv_size;
101 return (req_multiple - total_size % req_multiple) % req_multiple;
104 #endif /* __AH_H__ */
107 * fd.io coding-style-patch-verification: ON
110 * eval: (c-set-style "gnu")