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 */
46 #include <vnet/vnet.h>
48 #include <vnet/ip/format.h>
49 #include <vnet/ip/ip_packet.h>
50 #include <vnet/ip/lookup.h>
52 #include <vnet/ip/tcp_packet.h>
53 #include <vnet/ip/udp_packet.h>
54 #include <vnet/ip/icmp46_packet.h>
56 #include <vnet/ip/ip4.h>
57 #include <vnet/ip/ip4_error.h>
58 #include <vnet/ip/ip4_packet.h>
59 #include <vnet/ip/icmp4.h>
61 #include <vnet/ip/ip6.h>
62 #include <vnet/ip/ip6_packet.h>
63 #include <vnet/ip/ip6_error.h>
64 #include <vnet/ip/icmp6.h>
66 #include <vnet/ip/tcp.h>
69 #include <vnet/devices/dpdk/dpdk.h>
72 #include <vnet/classify/vnet_classify.h>
79 /* Per protocol info. */
81 /* Protocol name (also used as hash key). */
84 /* Protocol number. */
85 ip_protocol_t protocol;
87 /* Format function for this IP protocol. */
88 format_function_t * format_header;
90 /* Parser for header. */
91 unformat_function_t * unformat_header;
93 /* Parser for per-protocol matches. */
94 unformat_function_t * unformat_match;
96 /* Parser for packet generator edits for this protocol. */
97 unformat_function_t * unformat_pg_edit;
100 /* Per TCP/UDP port info. */
102 /* Port name (used as hash key). */
105 /* UDP/TCP port number in network byte order. */
108 /* Port specific format function. */
109 format_function_t * format_header;
111 /* Parser for packet generator edits for this protocol. */
112 unformat_function_t * unformat_pg_edit;
113 } tcp_udp_port_info_t;
116 /* Per IP protocol info. */
117 ip_protocol_info_t * protocol_infos;
119 /* Protocol info index hashed by 8 bit IP protocol. */
120 uword * protocol_info_by_protocol;
122 /* Hash table mapping IP protocol name (see protocols.def)
123 to protocol number. */
124 uword * protocol_info_by_name;
126 /* Per TCP/UDP port info. */
127 tcp_udp_port_info_t * port_infos;
129 /* Hash table from network-byte-order port to port info index. */
130 uword * port_info_by_port;
132 /* Hash table mapping TCP/UDP name to port info index. */
133 uword * port_info_by_name;
136 extern ip_main_t ip_main;
139 ip_main_init (vlib_main_t * vm);
141 static inline ip_protocol_info_t *
142 ip_get_protocol_info (ip_main_t * im, u32 protocol)
146 p = hash_get (im->protocol_info_by_protocol, protocol);
147 return p ? vec_elt_at_index (im->protocol_infos, p[0]) : 0;
150 static inline tcp_udp_port_info_t *
151 ip_get_tcp_udp_port_info (ip_main_t * im, u32 port)
155 p = hash_get (im->port_info_by_port, port);
156 return p ? vec_elt_at_index (im->port_infos, p[0]) : 0;
159 always_inline ip_csum_t
160 ip_incremental_checksum_buffer (vlib_main_t * vm, vlib_buffer_t * first_buffer,
161 u32 first_buffer_offset,
162 u32 n_bytes_to_checksum,
166 u32 n_bytes_left = n_bytes_to_checksum;
167 struct rte_mbuf * mb = ((struct rte_mbuf *)first_buffer)-1;
168 u8 nb_segs = mb->nb_segs;
169 ASSERT(mb->data_len >= first_buffer_offset);
173 n = clib_min (n_bytes_left, mb->data_len);
174 h = vlib_buffer_get_current (first_buffer) + first_buffer_offset;
177 sum = ip_incremental_checksum (sum, h, n);
181 if ((nb_segs == 0) || (mb == 0))
184 n = clib_min (n_bytes_left, mb->data_len);
185 h = rte_ctrlmbuf_data(mb);
188 ASSERT(n_bytes_left == 0);
189 ASSERT(nb_segs == 0);
194 vlib_buffer_t * b = first_buffer;
195 u32 n_bytes_left = n_bytes_to_checksum;
196 ASSERT (b->current_length >= first_buffer_offset);
200 n = clib_min (n_bytes_left, b->current_length);
201 h = vlib_buffer_get_current (b) + first_buffer_offset;
202 sum = ip_incremental_checksum (sum, h, n);
203 if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT))
208 if (n_bytes_left == 0)
210 b = vlib_get_buffer (vm, b->next_buffer);
211 n = clib_min (n_bytes_left, b->current_length);
212 h = vlib_buffer_get_current (b);
213 sum = ip_incremental_checksum (sum, h, n);
221 void ip_del_all_interface_addresses (vlib_main_t *vm, u32 sw_if_index);
223 #endif /* included_ip_main_h */