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/*
* Copyright (c) 2015-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* ip/udp_format.c: udp formatting
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <vnet/ip/ip.h>
/* Format UDP header. */
u8 *
format_udp_header (u8 * s, va_list * args)
{
udp_header_t *udp = va_arg (*args, udp_header_t *);
u32 max_header_bytes = va_arg (*args, u32);
u32 indent;
u32 header_bytes = sizeof (udp[0]);
/* Nothing to do. */
if (max_header_bytes < sizeof (udp[0]))
return format (s, "UDP header truncated");
indent = format_get_indent (s);
indent += 2;
s = format (s, "UDP: %d -> %d",
clib_net_to_host_u16 (udp->src_port),
clib_net_to_host_u16 (udp->dst_port));
s = format (s, "\n%Ulength %d, checksum 0x%04x",
format_white_space, indent,
clib_net_to_host_u16 (udp->length),
clib_net_to_host_u16 (udp->checksum));
/* Recurse into next protocol layer. */
if (max_header_bytes != 0 && header_bytes < max_header_bytes)
{
ip_main_t *im = &ip_main;
tcp_udp_port_info_t *pi;
pi = ip_get_tcp_udp_port_info (im, udp->dst_port);
if (pi && pi->format_header)
s = format (s, "\n%U%U",
format_white_space, indent - 2, pi->format_header,
/* next protocol header */ (udp + 1),
max_header_bytes - sizeof (udp[0]));
}
return s;
}
uword
unformat_udp_port (unformat_input_t * input, va_list * args)
{
u16 *result = va_arg (*args, u16 *);
int port;
/* Numeric type. */
if (unformat (input, "0x%x", &port) || unformat (input, "%d", &port))
{
if (port <= 0 || port >= (1 << 16))
return 0;
*result = port;
return 1;
}
return 0;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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