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.
16 * ip/ip.h: ip generic (4 or 6) main
18 * Copyright (c) 2008 Eliot Dresselhaus
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:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
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.
40 #ifndef included_ip_main_h
41 #define included_ip_main_h
43 #include <vppinfra/hash.h>
44 #include <vppinfra/heap.h> /* adjacency heap */
45 #include <vppinfra/ptclosure.h>
47 #include <vnet/vnet.h>
49 #include <vnet/ip/format.h>
50 #include <vnet/ip/ip_packet.h>
51 #include <vnet/ip/lookup.h>
53 #include <vnet/ip/tcp_packet.h>
54 #include <vnet/ip/udp_packet.h>
55 #include <vnet/ip/icmp46_packet.h>
57 #include <vnet/ip/ip4.h>
58 #include <vnet/ip/ip4_error.h>
59 #include <vnet/ip/ip4_packet.h>
60 #include <vnet/ip/icmp4.h>
62 #include <vnet/ip/ip6.h>
63 #include <vnet/ip/ip6_packet.h>
64 #include <vnet/ip/ip6_error.h>
65 #include <vnet/ip/icmp6.h>
66 #include <vnet/classify/vnet_classify.h>
68 /* Per protocol info. */
70 /* Protocol name (also used as hash key). */
73 /* Protocol number. */
74 ip_protocol_t protocol;
76 /* Format function for this IP protocol. */
77 format_function_t * format_header;
79 /* Parser for header. */
80 unformat_function_t * unformat_header;
82 /* Parser for per-protocol matches. */
83 unformat_function_t * unformat_match;
85 /* Parser for packet generator edits for this protocol. */
86 unformat_function_t * unformat_pg_edit;
89 /* Per TCP/UDP port info. */
91 /* Port name (used as hash key). */
94 /* UDP/TCP port number in network byte order. */
97 /* Port specific format function. */
98 format_function_t * format_header;
100 /* Parser for packet generator edits for this protocol. */
101 unformat_function_t * unformat_pg_edit;
102 } tcp_udp_port_info_t;
105 /* Per IP protocol info. */
106 ip_protocol_info_t * protocol_infos;
108 /* Protocol info index hashed by 8 bit IP protocol. */
109 uword * protocol_info_by_protocol;
111 /* Hash table mapping IP protocol name (see protocols.def)
112 to protocol number. */
113 uword * protocol_info_by_name;
115 /* Per TCP/UDP port info. */
116 tcp_udp_port_info_t * port_infos;
118 /* Hash table from network-byte-order port to port info index. */
119 uword * port_info_by_port;
121 /* Hash table mapping TCP/UDP name to port info index. */
122 uword * port_info_by_name;
125 extern ip_main_t ip_main;
128 ip_main_init (vlib_main_t * vm);
130 static inline ip_protocol_info_t *
131 ip_get_protocol_info (ip_main_t * im, u32 protocol)
135 p = hash_get (im->protocol_info_by_protocol, protocol);
136 return p ? vec_elt_at_index (im->protocol_infos, p[0]) : 0;
139 static inline tcp_udp_port_info_t *
140 ip_get_tcp_udp_port_info (ip_main_t * im, u32 port)
144 p = hash_get (im->port_info_by_port, port);
145 return p ? vec_elt_at_index (im->port_infos, p[0]) : 0;
148 always_inline ip_csum_t
149 ip_incremental_checksum_buffer (vlib_main_t * vm, vlib_buffer_t * first_buffer,
150 u32 first_buffer_offset,
151 u32 n_bytes_to_checksum,
154 vlib_buffer_t * b = first_buffer;
155 u32 n_bytes_left = n_bytes_to_checksum;
156 ASSERT (b->current_length >= first_buffer_offset);
160 n = clib_min (n_bytes_left, b->current_length);
161 h = vlib_buffer_get_current (b) + first_buffer_offset;
162 sum = ip_incremental_checksum (sum, h, n);
163 if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT))
168 if (n_bytes_left == 0)
170 b = vlib_get_buffer (vm, b->next_buffer);
171 n = clib_min (n_bytes_left, b->current_length);
172 h = vlib_buffer_get_current (b);
173 sum = ip_incremental_checksum (sum, h, n);
180 void ip_del_all_interface_addresses (vlib_main_t *vm, u32 sw_if_index);
182 extern vlib_node_registration_t ip4_inacl_node;
183 extern vlib_node_registration_t ip6_inacl_node;
185 #endif /* included_ip_main_h */