FD.io VPP  v19.01.3-6-g70449b9b9
Vector Packet Processing
flow_cli.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2018 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/vnet.h>
17 #include <vnet/devices/devices.h>
18 #include <vnet/ip/ip.h>
19 #include <vnet/ethernet/ethernet.h>
20 #include <vnet/flow/flow.h>
21 
23 
24 uword
26 {
27  ip_port_and_mask_t *pm = va_arg (*args, ip_port_and_mask_t *);
28  u32 port = 0, mask = 0;
29 
30  if (unformat (input, "any"))
31  ;
32  else if (unformat (input, "%u/%u", &port, &mask))
33  ;
34  else if (unformat (input, "%u/0x%x", &port, &mask))
35  ;
36  else if (unformat (input, "%u", &port))
37  mask = 0xffff;
38  else
39  return 0;
40 
41  if (port > 0xffff || mask > 0xffff)
42  return 0;
43 
44  pm->port = port;
45  pm->mask = mask;
46  return 1;
47 }
48 
49 u8 *
50 format_ip_port_and_mask (u8 * s, va_list * args)
51 {
52  ip_port_and_mask_t *pm = va_arg (*args, ip_port_and_mask_t *);
53 
54  if (pm->port == 0 && pm->mask == 0)
55  return format (s, "any");
56 
57  if (pm->mask == 0xffff)
58  return format (s, "%u", pm->port);
59 
60  return format (s, "%u/0x%x", pm->port, pm->mask);
61 }
62 
63 u8 *
64 format_flow_error (u8 * s, va_list * args)
65 {
66  int error = va_arg (*args, int);
67 
68  if (error == 0)
69  return format (s, "no error");
70 
71 #define _(v,n,str) if (error == v) return format (s, #str);
73 #undef _
74 
75  return format (s, "unknown error (%d)", error);
76 }
77 
78 u8 *
79 format_flow_actions (u8 * s, va_list * args)
80 {
81  u32 actions = va_arg (*args, u32);
82  u8 *t = 0;
83 
84 #define _(a, b, c) if (actions & (1 << a)) \
85  t = format (t, "%s%s", t ? " ":"", c);
87 #undef _
88  s = format (s, "%v", t);
89  vec_free (t);
90  return s;
91 }
92 
93 u8 *
94 format_flow_enabled_hw (u8 * s, va_list * args)
95 {
96  u32 flow_index = va_arg (*args, u32);
97  vnet_flow_t *f = vnet_get_flow (flow_index);
98  if (f == 0)
99  return format (s, "not found");
100 
101  u8 *t = 0;
102  u32 hw_if_index;
103  uword private_data;
104  vnet_main_t *vnm = vnet_get_main ();
105  /* *INDENT-OFF* */
106  hash_foreach (hw_if_index, private_data, f->private_data,
107  ({
108  t = format (t, "%s%U", t ? ", " : "",
109  format_vnet_hw_if_index_name, vnm, hw_if_index);
110  }));
111  /* *INDENT-ON* */
112  s = format (s, "%v", t);
113  vec_free (t);
114  return s;
115 }
116 
117 static const char *flow_type_strings[] = { 0,
118 #define _(a,b,c) c,
120 #undef _
121 };
122 
123 static clib_error_t *
125  vlib_cli_command_t * cmd_arg)
126 {
127  vnet_main_t *vnm = vnet_get_main ();
129  unformat_input_t _line_input, *line_input = &_line_input;
131  vnet_device_class_t *dev_class;
132  vnet_flow_t *f;
133  uword private_data;
134  u32 index = ~0, hw_if_index;
135 
136  if (!unformat_user (input, unformat_line_input, line_input))
137  goto no_args;
138 
139  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
140  {
141  if (unformat (line_input, "index %u", &index))
142  ;
143  else
144  return clib_error_return (0, "parse error: '%U'",
145  format_unformat_error, line_input);
146  }
147 
148  unformat_free (line_input);
149 
150  if (index != ~0)
151  {
152  if ((f = vnet_get_flow (index)) == 0)
153  return clib_error_return (0, "no such flow");
154 
155  vlib_cli_output (vm, "%-10s: %u", "index", f->index);
156  vlib_cli_output (vm, "%-10s: %s", "type", flow_type_strings[f->type]);
157  vlib_cli_output (vm, "%-10s: %U", "match", format_flow, f);
158  /* *INDENT-OFF* */
159  hash_foreach (hw_if_index, private_data, f->private_data,
160  ({
161  hi = vnet_get_hw_interface (vnm, hw_if_index);
162  dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
163  vlib_cli_output (vm, "interface %U\n",
164  format_vnet_hw_if_index_name, vnm, hw_if_index);
165  if (dev_class->format_flow)
166  vlib_cli_output (vm, " %U\n", dev_class->format_flow,
167  hi->dev_instance, f->index, private_data);
168  }));
169  /* *INDENT-ON* */
170  return 0;
171  }
172 
173 no_args:
174  /* *INDENT-OFF* */
176  {
177  vlib_cli_output (vm, "%U\n", format_flow, f);
178  });
179  /* *INDENT-ON* */
180 
181  return 0;
182 }
183 
184 /* *INDENT-OFF* */
185 VLIB_CLI_COMMAND (show_flow_entry_command, static) = {
186  .path = "show flow entry",
187  .short_help = "show flow entry [index <index>]",
188  .function = show_flow_entry,
189 };
190 /* *INDENT-ON* */
191 
192 static clib_error_t *
194  vlib_cli_command_t * cmd_arg)
195 {
197  vnet_flow_range_t *r = 0;
198 
199  vlib_cli_output (vm, "%8s %8s %s", "Start", "Count", "Owner");
200 
201  /* *INDENT-OFF* */
202  vec_foreach (r, fm->ranges)
203  {
204  vlib_cli_output (vm, "%8u %8u %s", r->start, r->count, r->owner);
205  };
206  /* *INDENT-ON* */
207  return 0;
208 }
209 
210 /* *INDENT-OFF* */
211 VLIB_CLI_COMMAND (show_flow_ranges_command, static) = {
212  .path = "show flow ranges",
213  .short_help = "show flow ranges",
214  .function = show_flow_ranges,
215 };
216 /* *INDENT-ON* */
217 
218 static clib_error_t *
220  vlib_cli_command_t * cmd_arg)
221 {
222  vnet_main_t *vnm = vnet_get_main ();
224  vnet_device_class_t *dev_class;
225  unformat_input_t _line_input, *line_input = &_line_input;
226  u32 hw_if_index = ~0;
227 
228  if (unformat_user (input, unformat_line_input, line_input))
229  {
230  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
231  {
232  if (unformat (line_input, "%U",
233  unformat_vnet_hw_interface, vnm, &hw_if_index))
234  ;
235  else
236  return clib_error_return (0, "parse error: '%U'",
237  format_unformat_error, line_input);
238  }
239  unformat_free (line_input);
240  }
241 
242  if (hw_if_index == ~0)
243  return clib_error_return (0, "please specify interface");
244 
245  hi = vnet_get_hw_interface (vnm, hw_if_index);
246  dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
247  if (dev_class->format_flow == 0)
248  return clib_error_return (0, "not supported");
249 
250  vlib_cli_output (vm, "%U", dev_class->format_flow, hi->dev_instance, ~0, 0);
251  return 0;
252 }
253 
254 /* *INDENT-OFF* */
255 VLIB_CLI_COMMAND (show_flow_interface_command, static) = {
256  .path = "show flow interface",
257  .short_help = "show flow interface <interface name>",
258  .function = show_flow_interface,
259 };
260 /* *INDENT-ON* */
261 
262 static clib_error_t *
264  vlib_cli_command_t * cmd_arg)
265 {
267  vnet_main_t *vnm = vnet_get_main ();
268  unformat_input_t _line_input, *line_input = &_line_input;
269  enum
270  {
271  FLOW_UNKNOWN_ACTION,
272  FLOW_ADD,
273  FLOW_DEL,
274  FLOW_ENABLE,
275  FLOW_DISABLE
276  } action = FLOW_UNKNOWN_ACTION;
277  u32 hw_if_index = ~0, tmp, flow_index = ~0;
278  int rv;
279  u8 prot;
280 
281  clib_memset (&flow, 0, sizeof (vnet_flow_t));
282  flow.index = ~0;
283  flow.actions = 0;
284  flow.ip4_n_tuple.protocol = ~0;
285  if (!unformat_user (input, unformat_line_input, line_input))
286  return 0;
287 
288  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
289  {
290  if (unformat (line_input, "add"))
291  action = FLOW_ADD;
292  else if (unformat (line_input, "del"))
293  action = FLOW_DEL;
294  else if (unformat (line_input, "enable"))
295  action = FLOW_ENABLE;
296  else if (unformat (line_input, "disable"))
297  action = FLOW_DISABLE;
298  else if (unformat (line_input, "src-ip %U",
300  &flow.ip4_n_tuple.src_addr))
301  ;
302  else if (unformat (line_input, "dst-ip %U",
304  &flow.ip4_n_tuple.dst_addr))
305  ;
306  else if (unformat (line_input, "src-port %U", unformat_ip_port_and_mask,
307  &flow.ip4_n_tuple.src_port))
308  ;
309  else if (unformat (line_input, "dst-port %U", unformat_ip_port_and_mask,
310  &flow.ip4_n_tuple.dst_port))
311  ;
312  else if (unformat (line_input, "proto %U", unformat_ip_protocol, &prot))
313  flow.ip4_n_tuple.protocol = prot;
314  else if (unformat (line_input, "proto %u", &tmp))
315  flow.ip4_n_tuple.protocol = tmp;
316  else if (unformat (line_input, "index %u", &flow_index))
317  ;
318  else if (unformat (line_input, "next-node %U", unformat_vlib_node, vm,
319  &flow.redirect_node_index))
320  flow.actions |= VNET_FLOW_ACTION_REDIRECT_TO_NODE;
321  else if (unformat (line_input, "mark %d", &flow.mark_flow_id))
322  flow.actions |= VNET_FLOW_ACTION_MARK;
323  else if (unformat (line_input, "buffer-advance %d",
324  &flow.buffer_advance))
325  flow.actions |= VNET_FLOW_ACTION_BUFFER_ADVANCE;
326  else if (unformat (line_input, "%U", unformat_vnet_hw_interface, vnm,
327  &hw_if_index))
328  ;
329  else
330  return clib_error_return (0, "parse error: '%U'",
331  format_unformat_error, line_input);
332  }
333 
334  unformat_free (line_input);
335 
336  if (hw_if_index == ~0 && (action == FLOW_ENABLE || action == FLOW_DISABLE))
337  return clib_error_return (0, "Please specify interface name");
338 
339  if (flow_index == ~0 && (action == FLOW_ENABLE || action == FLOW_DISABLE ||
340  action == FLOW_DEL))
341  return clib_error_return (0, "Please specify flow index");
342 
343  switch (action)
344  {
345  case FLOW_ADD:
346  if (flow.ip4_n_tuple.protocol == (ip_protocol_t) ~ 0)
347  return clib_error_return (0, "Please specify ip protocol");
348 
349  if (flow.actions == 0)
350  return clib_error_return (0, "Please specify at least one action");
351  flow.type = VNET_FLOW_TYPE_IP4_N_TUPLE;
352  rv = vnet_flow_add (vnm, &flow, &flow_index);
353  break;
354  case FLOW_DEL:
355  rv = vnet_flow_del (vnm, flow_index);
356  break;
357  case FLOW_ENABLE:
358  rv = vnet_flow_enable (vnm, flow_index, hw_if_index);
359  break;
360  case FLOW_DISABLE:
361  rv = vnet_flow_disable (vnm, flow_index, hw_if_index);
362  break;
363  default:
364  return clib_error_return (0, "please specify action (add, del, enable,"
365  " disable)");
366  }
367 
368  if (rv < 0)
369  return clib_error_return (0, "flow error: %U", format_flow_error, rv);
370  return 0;
371 }
372 
373 /* *INDENT-OFF* */
374 VLIB_CLI_COMMAND (test_flow_command, static) = {
375  .path = "test flow",
376  .short_help = "test flow add [src-ip <ip-addr/mask>] [dst-ip "
377  "<ip-addr/mask>] [src-port <port/mask>] [dst-port <port/mask>] "
378  "[proto <ip-proto>",
379  .function = test_flow,
380 };
381 /* *INDENT-ON* */
382 
383 
384 static u8 *
385 format_flow_match_element (u8 * s, va_list * args)
386 {
387  char *type = va_arg (*args, char *);
388  void *ptr = va_arg (*args, void *);
389 
390  if (strncmp (type, "u8", 2) == 0)
391  return format (s, "%d", *(u8 *) ptr);
392 
393  if (strncmp (type, "u16", 3) == 0)
394  return format (s, "%d", *(u16 *) ptr);
395 
396  if (strncmp (type, "u32", 3) == 0)
397  return format (s, "%d", *(u32 *) ptr);
398 
399  if (strncmp (type, "ip4_address_t", 13) == 0)
400  return format (s, "%U", format_ip4_address, ptr);
401 
402  if (strncmp (type, "ip4_address_and_mask_t", 13) == 0)
403  return format (s, "%U", format_ip4_address_and_mask, ptr);
404 
405  if (strncmp (type, "ip6_address_t", 13) == 0)
406  return format (s, "%U", format_ip6_address, ptr);
407 
408  if (strncmp (type, "ip6_address_and_mask_t", 13) == 0)
409  return format (s, "%U", format_ip6_address_and_mask, ptr);
410 
411  if (strncmp (type, "ip_protocol_t", 13) == 0)
412  return format (s, "%U", format_ip_protocol, *(ip_protocol_t *) ptr);
413 
414  if (strncmp (type, "ip_port_and_mask_t", 18) == 0)
415  return format (s, "%U", format_ip_port_and_mask, ptr);
416 
417  s = format (s, "unknown type '%s'", type);
418  return s;
419 }
420 
421 #define _fe(a,b) s2 = format (s2, "%s%s %U", s2 ? ", ":"", #b, \
422  format_flow_match_element, #a, &f->b);
423 #define _(a,b,c) \
424 u8 * format_flow_match_##b (u8 * s, va_list * args) \
425 { \
426  vnet_flow_##b##_t *f = __builtin_va_arg (*args, vnet_flow_##b##_t *); \
427  u8 *s2 = 0; \
428 foreach_flow_entry_##b \
429  s = format (s, "%v", s2);; \
430  vec_free (s2); \
431 return s; \
432 }
434 #undef _
435 #undef _fe
436 static u8 *
437 format_flow_match (u8 * s, va_list * args)
438 {
439  vnet_flow_t *f = va_arg (*args, vnet_flow_t *);
440 
441 #define _(a,b,c) \
442  if (f->type == VNET_FLOW_TYPE_##a) \
443  return format (s, "%U", format_flow_match_##b, &f->b);
445 #undef _
446 
447  return s;
448 }
449 
450 static u8 *
451 format_flow (u8 * s, va_list * args)
452 {
454  vnet_flow_t *f = va_arg (*args, vnet_flow_t *);
455  u32 indent = format_get_indent (s);
456  u8 *t = 0;
457 
458  s = format (s, "flow-index %u type %s active %u",
459  f->index, flow_type_strings[f->type],
460  hash_elts (f->private_data)),
461  s = format (s, "\n%Umatch: %U", format_white_space, indent + 2,
462  format_flow_match, f);
463  s = format (s, "\n%Uaction: %U", format_white_space, indent + 2,
465 
466  if (f->actions & VNET_FLOW_ACTION_MARK)
467  t = format (t, "%smark %u", t ? ", " : "", f->mark_flow_id);
468 
469  if (f->actions & VNET_FLOW_ACTION_REDIRECT_TO_NODE)
470  t = format (t, "%snext-node %U", t ? ", " : "",
472 
473  if (f->actions & VNET_FLOW_ACTION_BUFFER_ADVANCE)
474  t = format (t, "%sbuffer-advance %d", t ? ", " : "", f->buffer_advance);
475 
476  if (t)
477  {
478  s = format (s, "\n%U%v", format_white_space, indent + 4, t);
479  vec_free (t);
480  }
481 
482  return s;
483 }
484 
485 /*
486  * fd.io coding-style-patch-verification: ON
487  *
488  * Local Variables:
489  * eval: (c-set-style "gnu")
490  * End:
491  */
unformat_function_t unformat_vnet_hw_interface
vmrglw vmrglh hi
format_function_t format_ip_protocol
Definition: format.h:45
unformat_function_t unformat_ip_protocol
Definition: format.h:46
format_function_t format_vlib_node_name
Definition: node_funcs.h:1141
vnet_flow_type_t type
Definition: flow.h:121
format_function_t format_ip6_address_and_mask
Definition: format.h:95
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
u8 * format_flow_actions(u8 *s, va_list *args)
Definition: flow_cli.c:79
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
static u32 format_get_indent(u8 *s)
Definition: format.h:72
static clib_error_t * test_flow(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
Definition: flow_cli.c:263
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
vnet_flow_t * global_flow_pool
Definition: flow.h:171
u8 * format_flow_error(u8 *s, va_list *args)
Definition: flow_cli.c:64
struct _vnet_device_class vnet_device_class_t
int vnet_flow_disable(vnet_main_t *vnm, u32 flow_index, u32 hw_if_index)
Definition: flow.c:132
u32 redirect_node_index
Definition: flow.h:133
unsigned char u8
Definition: types.h:56
static clib_error_t * show_flow_entry(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
Definition: flow_cli.c:124
#define fm
u8 *() format_function_t(u8 *s, va_list *args)
Definition: format.h:48
format_function_t format_ip4_address
Definition: format.h:75
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:490
static vnet_device_class_t * vnet_get_device_class(vnet_main_t *vnm, u32 dev_class_index)
u8 * format_white_space(u8 *s, va_list *va)
Definition: std-formats.c:113
static format_function_t format_flow
Definition: flow_cli.c:22
#define hash_foreach(key_var, value_var, h, body)
Definition: hash.h:442
u32 mark_flow_id
Definition: flow.h:130
static u8 * format_flow_match_element(u8 *s, va_list *args)
Definition: flow_cli.c:385
#define clib_error_return(e, args...)
Definition: error.h:99
vnet_flow_main_t flow_main
Definition: flow.c:21
unsigned int u32
Definition: types.h:88
vnet_flow_range_t * ranges
Definition: flow.h:177
unformat_function_t unformat_line_input
Definition: format.h:282
int vnet_flow_del(vnet_main_t *vnm, u32 flow_index)
Definition: flow.c:67
static clib_error_t * show_flow_ranges(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
Definition: flow_cli.c:193
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
enum ip_protocol ip_protocol_t
vnet_flow_t * vnet_get_flow(u32 flow_index)
Definition: flow.c:57
u32 index
Definition: flow.h:124
i32 buffer_advance
Definition: flow.h:140
u32 actions
Definition: flow.h:127
uword * private_data
Definition: flow.h:150
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
u8 * format_ip_port_and_mask(u8 *s, va_list *args)
Definition: flow_cli.c:50
format_function_t format_ip6_address
Definition: format.h:93
vlib_main_t * vm
Definition: buffer.c:301
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
u8 * format_flow_enabled_hw(u8 *s, va_list *args)
Definition: flow_cli.c:94
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
foreach_flow_type
Definition: flow.h:113
static const char * flow_type_strings[]
Definition: flow_cli.c:117
static uword hash_elts(void *v)
Definition: hash.h:118
uword unformat_ip_port_and_mask(unformat_input_t *input, va_list *args)
Definition: flow_cli.c:25
static foreach_flow_type u8 * format_flow_match(u8 *s, va_list *args)
Definition: flow_cli.c:437
int vnet_flow_add(vnet_main_t *vnm, vnet_flow_t *flow, u32 *flow_index)
Definition: flow.c:43
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
static clib_error_t * show_flow_interface(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg)
Definition: flow_cli.c:219
format_function_t format_ip4_address_and_mask
Definition: format.h:77
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:162
int vnet_flow_enable(vnet_main_t *vnm, u32 flow_index, u32 hw_if_index)
Definition: flow.c:91
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1147
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define vec_foreach(var, vec)
Vector iterator.
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:762
icmpr_flow_t * flow
Definition: main.c:123
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
unformat_function_t unformat_ip4_address_and_mask
Definition: format.h:72