2 * ip/udp.h: udp protocol
4 * Copyright (c) 2013 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #ifndef included_udp_h
19 #define included_udp_h
21 #include <vnet/vnet.h>
22 #include <vnet/ip/udp_packet.h>
23 #include <vnet/ip/ip.h>
24 #include <vnet/ip/ip4.h>
25 #include <vnet/ip/ip4_packet.h>
26 #include <vnet/pg/pg.h>
27 #include <vnet/ip/format.h>
30 #define udp_error(n,s) UDP_ERROR_##n,
31 #include <vnet/ip/udp_error.def>
36 #define foreach_udp4_dst_port \
37 _ (67, dhcp_to_server) \
38 _ (68, dhcp_to_client) \
47 #define foreach_udp6_dst_port \
48 _ (547, dhcpv6_to_server) \
49 _ (546, dhcpv6_to_client) \
53 #define _(n,f) UDP_DST_PORT_##f = n,
60 #define _(n,f) UDP6_DST_PORT_##f = n,
66 /* Name (a c string). */
69 /* GRE protocol type in host byte order. */
70 udp_dst_port_t dst_port;
72 /* Node which handles this type. */
75 /* Next index for this type. */
77 } udp_dst_port_info_t;
81 UDP_IP4, /* the code is full of is_ip4... */
86 udp_dst_port_info_t * dst_port_infos [N_UDP_AF];
88 /* Hash tables mapping name/protocol to protocol info index. */
89 uword * dst_port_info_by_name[N_UDP_AF];
90 uword * dst_port_info_by_dst_port[N_UDP_AF];
93 vlib_main_t * vlib_main;
96 always_inline udp_dst_port_info_t *
97 udp_get_dst_port_info (udp_main_t * um, udp_dst_port_t dst_port, u8 is_ip4)
99 uword * p = hash_get (um->dst_port_info_by_dst_port[is_ip4], dst_port);
100 return p ? vec_elt_at_index (um->dst_port_infos[is_ip4], p[0]) : 0;
103 format_function_t format_udp_header;
104 format_function_t format_udp_rx_trace;
106 unformat_function_t unformat_udp_header;
108 void udp_register_dst_port (vlib_main_t * vm,
109 udp_dst_port_t dst_port,
110 u32 node_index, u8 is_ip4);
112 #endif /* included_udp_h */