FD.io VPP  v21.01.1
Vector Packet Processing
udp_cli.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2020 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:
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 #include <vnet/udp/udp.h>
18 
19 u8 *
20 format_udp_connection_id (u8 * s, va_list * args)
21 {
22  udp_connection_t *uc = va_arg (*args, udp_connection_t *);
23  if (!uc)
24  return s;
25  if (uc->c_is_ip4)
26  s = format (s, "[%u:%u][%s] %U:%d->%U:%d", uc->c_thread_index,
27  uc->c_s_index, "U", format_ip4_address, &uc->c_lcl_ip4,
28  clib_net_to_host_u16 (uc->c_lcl_port), format_ip4_address,
29  &uc->c_rmt_ip4, clib_net_to_host_u16 (uc->c_rmt_port));
30  else
31  s = format (s, "[%u:%u][%s] %U:%d->%U:%d", uc->c_thread_index,
32  uc->c_s_index, "U", format_ip6_address, &uc->c_lcl_ip6,
33  clib_net_to_host_u16 (uc->c_lcl_port), format_ip6_address,
34  &uc->c_rmt_ip6, clib_net_to_host_u16 (uc->c_rmt_port));
35  return s;
36 }
37 
38 static const char *udp_connection_flags_str[] = {
39 #define _(sym, str) str,
41 #undef _
42 };
43 
44 static u8 *
45 format_udp_connection_flags (u8 * s, va_list * args)
46 {
47  udp_connection_t *uc = va_arg (*args, udp_connection_t *);
48  int i, last = -1;
49 
50  for (i = 0; i < UDP_CONN_N_FLAGS; i++)
51  if (uc->flags & (1 << i))
52  last = i;
53  for (i = 0; i < last; i++)
54  {
55  if (uc->flags & (1 << i))
56  s = format (s, "%s, ", udp_connection_flags_str[i]);
57  }
58  if (last >= 0)
59  s = format (s, "%s", udp_connection_flags_str[last]);
60  return s;
61 }
62 
63 static u8 *
64 format_udp_vars (u8 * s, va_list * args)
65 {
66  udp_connection_t *uc = va_arg (*args, udp_connection_t *);
67  s = format (s, " index %u flags: %U", uc->c_c_index,
69 
70  if (!(uc->flags & UDP_CONN_F_LISTEN))
71  s = format (s, "\n");
72  return s;
73 }
74 
75 u8 *
76 format_udp_connection (u8 * s, va_list * args)
77 {
78  udp_connection_t *uc = va_arg (*args, udp_connection_t *);
79  u32 verbose = va_arg (*args, u32);
80  if (!uc)
81  return s;
82  s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_udp_connection_id, uc);
83  if (verbose)
84  {
85  s = format (s, "%-" SESSION_CLI_STATE_LEN "s",
86  (uc->flags & UDP_CONN_F_LISTEN) ? "LISTEN" : "OPENED", uc);
87  if (verbose > 1)
88  s = format (s, "\n%U", format_udp_vars, uc);
89  }
90  return s;
91 }
92 
93 static clib_error_t *
95 {
96  udp_main_t *um = &udp_main;
97  u32 tmp;
98 
100  {
101  if (unformat (input, "mtu %u", &tmp))
102  um->default_mtu = tmp;
103  else
104  return clib_error_return (0, "unknown input `%U'",
105  format_unformat_error, input);
106  }
107  return 0;
108 }
109 
111 
112 static clib_error_t *
114  vlib_cli_command_t * cmd_arg)
115 {
116  udp_main_t *um = vnet_get_udp_main ();
117 
118  clib_error_t *error = NULL;
119 
121  return clib_error_return (0, "unknown input `%U'", format_unformat_error,
122  input);
123 
124  udp_dst_port_info_t *port_info;
125  if (um->punt_unknown4)
126  {
127  vlib_cli_output (vm, "IPv4 UDP punt: enabled");
128  }
129  else
130  {
131  u8 *s = NULL;
132  vec_foreach (port_info, um->dst_port_infos[UDP_IP4])
133  {
134  if (udp_is_valid_dst_port (port_info->dst_port, 1))
135  {
136  s = format (s, (!s) ? "%d" : ", %d", port_info->dst_port);
137  }
138  }
139  s = format (s, "%c", 0);
140  vlib_cli_output (vm, "IPV4 UDP ports punt : %s", s);
141  }
142 
143  if (um->punt_unknown6)
144  {
145  vlib_cli_output (vm, "IPv6 UDP punt: enabled");
146  }
147  else
148  {
149  u8 *s = NULL;
150  vec_foreach (port_info, um->dst_port_infos[UDP_IP6])
151  {
152  if (udp_is_valid_dst_port (port_info->dst_port, 01))
153  {
154  s = format (s, (!s) ? "%d" : ", %d", port_info->dst_port);
155  }
156  }
157  s = format (s, "%c", 0);
158  vlib_cli_output (vm, "IPV6 UDP ports punt : %s", s);
159  }
160 
161  return (error);
162 }
163 /* *INDENT-OFF* */
164 VLIB_CLI_COMMAND (show_tcp_punt_command, static) =
165 {
166  .path = "show udp punt",
167  .short_help = "show udp punt [ipv4|ipv6]",
168  .function = show_udp_punt_fn,
169 };
170 /* *INDENT-ON* */
171 
172 /*
173  * fd.io coding-style-patch-verification: ON
174  *
175  * Local Variables:
176  * eval: (c-set-style "gnu")
177  * End:
178  */
#define SESSION_CLI_STATE_LEN
udp_main_t udp_main
Definition: udp.c:23
Definition: udp.h:97
static heap_elt_t * last(heap_header_t *h)
Definition: heap.c:53
vlib_main_t * vm
Definition: in2out_ed.c:1580
u8 punt_unknown6
Definition: udp.h:110
unsigned char u8
Definition: types.h:56
static udp_main_t * vnet_get_udp_main()
Definition: udp.h:151
u8 flags
connection flags
Definition: udp.h:65
static u8 * format_udp_connection_flags(u8 *s, va_list *args)
Definition: udp_cli.c:45
format_function_t format_ip4_address
Definition: format.h:73
u8 * format_udp_connection_id(u8 *s, va_list *args)
Definition: udp_cli.c:20
description fragment has unexpected format
Definition: map.api:433
u8 punt_unknown4
Definition: udp.h:109
#define clib_error_return(e, args...)
Definition: error.h:99
static const char * udp_connection_flags_str[]
Definition: udp_cli.c:38
unsigned int u32
Definition: types.h:88
u8 * format_udp_connection(u8 *s, va_list *args)
Definition: udp_cli.c:76
Definition: cJSON.c:84
static clib_error_t * udp_config_fn(vlib_main_t *vm, unformat_input_t *input)
Definition: udp_cli.c:94
udp_dst_port_info_t * dst_port_infos[N_UDP_AF]
Definition: udp.h:99
struct _unformat_input_t unformat_input_t
u8 udp_is_valid_dst_port(udp_dst_port_t dst_port, u8 is_ip4)
Definition: udp_local.c:529
#define VLIB_CONFIG_FUNCTION(x, n,...)
Definition: init.h:182
Definition: udp.h:92
static u8 * format_udp_vars(u8 *s, va_list *args)
Definition: udp_cli.c:64
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
format_function_t format_ip6_address
Definition: format.h:91
sll srl srl sll sra u16x4 i
Definition: vector_sse42.h:317
#define SESSION_CLI_ID_LEN
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:158
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:696
udp_dst_port_t dst_port
Definition: udp.h:75
static clib_error_t * show_udp_punt_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
Definition: udp_cli.c:113
u16 default_mtu
Definition: udp.h:124
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define vec_foreach(var, vec)
Vector iterator.
Definition: udp.h:93
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170