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Vector Packet Processing
ip4_error.h
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1 /*
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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 /*
16  * ip/ip4_error.h: ip4 fast path errors
17  *
18  * Copyright (c) 2008 Eliot Dresselhaus
19  *
20  * Permission is hereby granted, free of charge, to any person obtaining
21  * a copy of this software and associated documentation files (the
22  * "Software"), to deal in the Software without restriction, including
23  * without limitation the rights to use, copy, modify, merge, publish,
24  * distribute, sublicense, and/or sell copies of the Software, and to
25  * permit persons to whom the Software is furnished to do so, subject to
26  * the following conditions:
27  *
28  * The above copyright notice and this permission notice shall be
29  * included in all copies or substantial portions of the Software.
30  *
31  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38  */
39 
40 #ifndef included_ip_ip4_error_h
41 #define included_ip_ip4_error_h
42 
43 #define foreach_ip4_error \
44  /* Must be first. */ \
45  _ (NONE, "valid ip4 packets") \
46  \
47  /* Errors signalled by ip4-input */ \
48  _ (TOO_SHORT, "ip4 length < 20 bytes") \
49  _ (BAD_LENGTH, "ip4 length > l2 length") \
50  _ (BAD_CHECKSUM, "bad ip4 checksum") \
51  _ (VERSION, "ip4 version != 4") \
52  _ (OPTIONS, "ip4 options present") \
53  _ (FRAGMENT_OFFSET_ONE, "ip4 fragment offset == 1") \
54  _ (TIME_EXPIRED, "ip4 ttl <= 1") \
55  \
56  /* Errors signalled by ip4-rewrite. */ \
57  _ (MTU_EXCEEDED, "ip4 MTU exceeded and DF set") \
58  _ (DST_LOOKUP_MISS, "ip4 destination lookup miss") \
59  _ (SRC_LOOKUP_MISS, "ip4 source lookup miss") \
60  _ (DROP, "ip4 drop") \
61  _ (PUNT, "ip4 punt") \
62  _ (SAME_INTERFACE, "ip4 egress interface same as ingress") \
63  \
64  /* Errors signalled by ip4-local. */ \
65  _ (UNKNOWN_PROTOCOL, "unknown ip protocol") \
66  _ (TCP_CHECKSUM, "bad tcp checksum") \
67  _ (UDP_CHECKSUM, "bad udp checksum") \
68  _ (UDP_LENGTH, "inconsistent udp/ip lengths") \
69  \
70  /* Errors signalled by ip4-source-check. */ \
71  _ (UNICAST_SOURCE_CHECK_FAILS, "ip4 unicast source check fails") \
72  \
73  /* Spoofed packets in ip4-rewrite-local */ \
74  _ (SPOOFED_LOCAL_PACKETS, "ip4 spoofed local-address packet drops") \
75  \
76  /* Errors signalled by ip4-inacl */ \
77  _ (INACL_TABLE_MISS, "input ACL table-miss drops") \
78  _ (INACL_SESSION_DENY, "input ACL session deny drops") \
79  /* Errors singalled by ip4-outacl */ \
80  _ (OUTACL_TABLE_MISS, "output ACL table-miss drops") \
81  _ (OUTACL_SESSION_DENY, "output ACL session deny drops") \
82  \
83  /* Errors from mfib-forward */ \
84  _ (RPF_FAILURE, "Multicast RPF check failed") \
85  \
86  /* Errors signalled by ip4-reassembly */ \
87  _ (REASS_DUPLICATE_FRAGMENT, "duplicate/overlapping fragments") \
88  _ (REASS_LIMIT_REACHED, "drops due to concurrent reassemblies limit") \
89  _ (REASS_FRAGMENT_CHAIN_TOO_LONG, "fragment chain too long (drop)") \
90  _ (REASS_NO_BUF, "out of buffers (drop)") \
91  _ (REASS_MALFORMED_PACKET, "malformed packets") \
92  _ (REASS_INTERNAL_ERROR, "drops due to internal reassembly error")
93 
94 typedef enum
95 {
96 #define _(sym,str) IP4_ERROR_##sym,
98 #undef _
100 } ip4_error_t;
101 
102 #endif /* included_ip_ip4_error_h */
103 
104 /*
105  * fd.io coding-style-patch-verification: ON
106  *
107  * Local Variables:
108  * eval: (c-set-style "gnu")
109  * End:
110  */
ip4_error_t
Definition: ip4_error.h:94
#define foreach_ip4_error
Definition: ip4_error.h:43