blob: 2277e18bcdbff36161e957daf98f86130ba6608c [file] [log] [blame]
Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
Florin Corasc5df8c72019-04-08 07:42:30 -07002 * Copyright (c) 2015-2019 Cisco and/or its affiliates.
Ed Warnickecb9cada2015-12-08 15:45:58 -07003 * 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/udp_format.c: udp formatting
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#include <vnet/ip/ip.h>
41
42/* Format UDP header. */
Dave Barachd7cb1b52016-12-09 09:52:16 -050043u8 *
44format_udp_header (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070045{
Dave Barachd7cb1b52016-12-09 09:52:16 -050046 udp_header_t *udp = va_arg (*args, udp_header_t *);
Ed Warnickecb9cada2015-12-08 15:45:58 -070047 u32 max_header_bytes = va_arg (*args, u32);
Christophe Fontained3c008d2017-10-02 18:10:54 +020048 u32 indent;
Ed Warnickecb9cada2015-12-08 15:45:58 -070049 u32 header_bytes = sizeof (udp[0]);
50
51 /* Nothing to do. */
52 if (max_header_bytes < sizeof (udp[0]))
53 return format (s, "UDP header truncated");
54
55 indent = format_get_indent (s);
56 indent += 2;
57
58 s = format (s, "UDP: %d -> %d",
59 clib_net_to_host_u16 (udp->src_port),
60 clib_net_to_host_u16 (udp->dst_port));
61
62 s = format (s, "\n%Ulength %d, checksum 0x%04x",
63 format_white_space, indent,
64 clib_net_to_host_u16 (udp->length),
65 clib_net_to_host_u16 (udp->checksum));
66
67 /* Recurse into next protocol layer. */
68 if (max_header_bytes != 0 && header_bytes < max_header_bytes)
69 {
Dave Barachd7cb1b52016-12-09 09:52:16 -050070 ip_main_t *im = &ip_main;
71 tcp_udp_port_info_t *pi;
Ed Warnickecb9cada2015-12-08 15:45:58 -070072
73 pi = ip_get_tcp_udp_port_info (im, udp->dst_port);
74
75 if (pi && pi->format_header)
76 s = format (s, "\n%U%U",
Dave Barachd7cb1b52016-12-09 09:52:16 -050077 format_white_space, indent - 2, pi->format_header,
Ed Warnickecb9cada2015-12-08 15:45:58 -070078 /* next protocol header */ (udp + 1),
79 max_header_bytes - sizeof (udp[0]));
80 }
81
82 return s;
83}
Dave Barachd7cb1b52016-12-09 09:52:16 -050084
85/*
86 * fd.io coding-style-patch-verification: ON
87 *
88 * Local Variables:
89 * eval: (c-set-style "gnu")
90 * End:
91 */