src/vnet/ip/ip4_error.h

   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 singalled 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   /* Erros 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,
  97   foreach_ip4_error
  98 #undef _
  99     IP4_N_ERROR,
 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  */