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Vector Packet Processing
fib_entry_delegate.c
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1 /*
2  * Copyright (c) 2016 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 
17 #include <vnet/fib/fib_entry.h>
19 
21 
24 {
25  return (pool_elt_at_index(fib_entry_delegate_pool, fedi));
26 }
27 
30 {
31  return (fed - fib_entry_delegate_pool);
32 }
33 
34 static fib_entry_delegate_t *
37  u32 *index)
38 {
39  fib_entry_delegate_t *delegate;
40  index_t *fedi;
41  int ii;
42 
43  ii = 0;
44  vec_foreach(fedi, fib_entry->fe_delegates)
45  {
46  delegate = fib_entry_delegate_get(*fedi);
47 
48  if (delegate->fd_type == type)
49  {
50  if (NULL != index)
51  *index = ii;
52 
53  return (delegate);
54  }
55  else
56  {
57  ii++;
58  }
59  }
60 
61  return (NULL);
62 }
63 
67 {
68  return (fib_entry_delegate_find_i(fib_entry, type, NULL));
69 }
70 
71 void
74 {
76  u32 index = ~0;
77 
78  fed = fib_entry_delegate_find_i(fib_entry, type, &index);
79 
80  ASSERT(NULL != fed);
81 
82  vec_del1(fib_entry->fe_delegates, index);
83 
84  pool_put(fib_entry_delegate_pool, fed);
85 }
86 
87 static int
89  void * v2)
90 {
91  fib_entry_delegate_t *delegate1, *delegate2;
92  index_t *fedi1 = v1, *fedi2 = v2;
93 
94  delegate1 = fib_entry_delegate_get(*fedi1);
95  delegate2 = fib_entry_delegate_get(*fedi2);
96 
97  return (delegate1->fd_type - delegate2->fd_type);
98 }
99 
100 static void
103 
104 {
105  fib_entry_delegate_t *delegate;
106 
107  pool_get_zero(fib_entry_delegate_pool, delegate);
108 
109  delegate->fd_entry_index = fib_entry_get_index(fib_entry);
110  delegate->fd_type = type;
111 
112  vec_add1(fib_entry->fe_delegates, delegate - fib_entry_delegate_pool);
115 }
116 
120 {
121  fib_entry_delegate_t *delegate;
122 
123  delegate = fib_entry_delegate_find(fib_entry, fdt);
124 
125  if (NULL == delegate)
126  {
127  fib_entry_delegate_init(fib_entry, fdt);
128  }
129 
130  return (fib_entry_delegate_find(fib_entry, fdt));
131 }
132 
135 {
136  switch (fct)
137  {
151  break;
154  }
155  ASSERT(0);
157 }
158 
161 {
162  switch (fdt)
163  {
175  return (FIB_FORW_CHAIN_TYPE_NSH);
181  break;
182  }
183  ASSERT(0);
185 }
186 
187 /**
188  * typedef for printing a delegate
189  */
190 typedef u8 * (*fib_entry_delegate_format_t)(const fib_entry_delegate_t *fed,
191  u8 *s);
192 
193 /**
194  * Print a delegate that represents a forwarding chain
195  */
196 static u8 *
198  u8 *s)
199 {
200  s = format(s, "%U-chain\n %U",
203  format_dpo_id, &fed->fd_dpo, 2);
204 
205  return (s);
206 }
207 
208 /**
209  * Print a delegate that represents cover tracking
210  */
211 static u8 *
213  u8 *s)
214 {
215  s = format(s, "covered:[");
216  s = fib_node_children_format(fed->fd_list, s);
217  s = format(s, "]");
218 
219  return (s);
220 }
221 
222 /**
223  * Print a delegate that represents attached-import tracking
224  */
225 static u8 *
227  u8 *s)
228 {
229  s = format(s, "import:");
230  s = fib_ae_import_format(fed->fd_index, s);
231 
232  return (s);
233 }
234 
235 /**
236  * Print a delegate that represents attached-export tracking
237  */
238 static u8 *
240  u8 *s)
241 {
242  s = format(s, "export:");
243  s = fib_ae_export_format(fed->fd_index, s);
244 
245  return (s);
246 }
247 
248 /**
249  * Print a delegate that represents BFD tracking
250  */
251 static u8 *
253  u8 *s)
254 {
255  s = format(s, "BFD:%d", fed->fd_bfd_state);
256 
257  return (s);
258 }
259 
260 /**
261  * Print a delegate that represents tracking
262  */
263 static u8 *
265  u8 *s)
266 {
267  u32 indent = format_get_indent (s);
268 
269  s = format(s, "track: sibling:%d", fed->fd_track.fedt_sibling);
270 
271  s = format(s, "\n%UChildren:", format_white_space, indent);
273 
274  return (s);
275 }
276 
277 /**
278  * A delegate type to formatter map
279  */
281 {
293 };
294 
295 u8 *
296 format_fib_entry_delegate (u8 * s, va_list * args)
297 {
299  index_t fedi;
300 
301  fedi = va_arg (*args, index_t);
302  fed = fib_entry_delegate_get(fedi);
303 
304  return (fed_formatters[fed->fd_type](fed, s));
305 }
306 
307 static clib_error_t *
309  unformat_input_t * input,
310  vlib_cli_command_t * cmd)
311 {
312  fib_node_index_t fedi;
313 
314  if (unformat (input, "%d", &fedi))
315  {
316  /*
317  * show one in detail
318  */
319  if (!pool_is_free_index(fib_entry_delegate_pool, fedi))
320  {
321  vlib_cli_output (vm, "%d@%U",
322  fedi,
324  }
325  else
326  {
327  vlib_cli_output (vm, "entry %d invalid", fedi);
328  }
329  }
330  else
331  {
332  /*
333  * show all
334  */
335  vlib_cli_output (vm, "FIB Entry Delegates:");
336  pool_foreach_index(fedi, fib_entry_delegate_pool,
337  ({
338  vlib_cli_output (vm, "%d@%U",
339  fedi,
341  }));
342  }
343 
344  return (NULL);
345 }
346 
347 VLIB_CLI_COMMAND (show_fib_entry, static) = {
348  .path = "show fib entry-delegate",
350  .short_help = "show fib entry delegate",
351 };
Tracker.
Contribute an object that is to be used to forward BIER packets.
Definition: fib_types.h:122
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:137
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:113
An entry in a FIB table.
Definition: fib_entry.h:305
BFD session state.
static u8 * fib_entry_delegate_fmt_bfd(const fib_entry_delegate_t *fed, u8 *s)
Print a delegate that represents BFD tracking.
#define pool_get_zero(P, E)
Allocate an object E from a pool P and zero it.
Definition: pool.h:255
fib_node_index_t fd_index
Valid for the attached import cases.
enum fib_entry_delegate_type_t_ fib_entry_delegate_type_t
Delegate types.
static u8 * fib_entry_delegate_fmt_import(const fib_entry_delegate_t *fed, u8 *s)
Print a delegate that represents attached-import tracking.
fib_bfd_state_t fd_bfd_state
BFD state.
fib_entry_delegate_t * fib_entry_delegate_find(const fib_entry_t *fib_entry, fib_entry_delegate_type_t type)
u32 index_t
A Data-Path Object is an object that represents actions that are applied to packets are they are swit...
Definition: dpo.h:41
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:590
Contribute an object that is to be used to forward IP4 packets.
Definition: fib_types.h:109
static u32 format_get_indent(u8 *s)
Definition: format.h:72
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
static void fib_entry_delegate_init(fib_entry_t *fib_entry, fib_entry_delegate_type_t type)
dpo_id_t fd_dpo
Valid for the forwarding chain delegates.
unsigned char u8
Definition: types.h:56
fib_node_index_t fd_entry_index
The FIB entry object to which the delagate is attached.
fib_entry_delegate_t * fib_entry_delegate_get(index_t fedi)
void fib_entry_delegate_remove(fib_entry_t *fib_entry, fib_entry_delegate_type_t type)
u8 * fib_ae_export_format(fib_node_index_t expi, u8 *s)
u8 * format_white_space(u8 *s, va_list *va)
Definition: std-formats.c:129
static int fib_entry_delegate_cmp_for_sort(void *v1, void *v2)
fib_node_index_t fib_entry_get_index(const fib_entry_t *fib_entry)
Definition: fib_entry.c:63
static fib_entry_delegate_t * fib_entry_delegate_pool
static u8 * fib_entry_delegate_fmt_covered(const fib_entry_delegate_t *fed, u8 *s)
Print a delegate that represents cover tracking.
unsigned int u32
Definition: types.h:88
Contribute an object that is to be used to forward Ethernet packets.
Definition: fib_types.h:141
fib_node_list_t fd_list
For the cover tracking.
static u8 * fib_entry_delegate_fmt_fwd_chain(const fib_entry_delegate_t *fed, u8 *s)
Print a delegate that represents a forwarding chain.
fib_entry_delegate_track_t fd_track
tracker state
fib_entry_delegate_type_t fd_type
The delagate type.
Attached import/export functionality.
vl_api_fib_path_type_t type
Definition: fib_types.api:123
Contribute an object that is to be used to forward end-of-stack MPLS packets.
Definition: fib_types.h:129
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:534
static u8 * fib_entry_delegate_fmt_track(const fib_entry_delegate_t *fed, u8 *s)
Print a delegate that represents tracking.
index_t * fe_delegates
A vector of delegate indices.
Definition: fib_entry.h:353
struct _unformat_input_t unformat_input_t
u32 fedt_sibling
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:302
#define vec_del1(v, i)
Delete the element at index I.
Definition: vec.h:873
vlib_main_t * vm
Definition: in2out_ed.c:1599
fib_node_list_t fn_children
Vector of nodes that depend upon/use/share this node.
Definition: fib_node.h:309
fib_entry_delegate_type_t fib_entry_chain_type_to_delegate_type(fib_forward_chain_type_t fct)
u8 * fib_ae_import_format(fib_node_index_t impi, u8 *s)
Contribute an object that is to be used to forward NSH packets.
Definition: fib_types.h:147
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:299
fib_forward_chain_type_t fib_entry_delegate_type_to_chain_type(fib_entry_delegate_type_t fdt)
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:152
#define ASSERT(truth)
Forwarding chain types: for the vast majority of FIB entries only one chain is required - the one tha...
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:689
enum fib_forward_chain_type_t_ fib_forward_chain_type_t
FIB output chain type.
u8 * format_fib_forw_chain_type(u8 *s, va_list *args)
Definition: fib_types.c:49
static clib_error_t * show_fib_entry_delegate_command(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
u8 * format_dpo_id(u8 *s, va_list *args)
Format a DPO_id_t oject.
Definition: dpo.c:148
fib_node_index_t fib_entry_delegate_get_index(const fib_entry_delegate_t *fed)
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:1053
fib_node_t fedt_node
#define vec_foreach(var, vec)
Vector iterator.
static fib_entry_delegate_t * fib_entry_delegate_find_i(const fib_entry_t *fib_entry, fib_entry_delegate_type_t type, u32 *index)
Contribute an object that is to be used to forward non-end-of-stack MPLS packets. ...
Definition: fib_types.h:118
Dependency list of covered entries.
A Delagate is a means to implmenet the Delagation design pattern; the extension of an objects functio...
static fib_entry_delegate_format_t fed_formatters[]
A delegate type to formatter map.
#define pool_foreach_index(i, v, body)
Iterate pool by index.
Definition: pool.h:558
u8 * fib_node_children_format(fib_node_list_t list, u8 *s)
Definition: fib_node.c:176
u8 * format_fib_entry_delegate(u8 *s, va_list *args)
Contribute an object that is to be used to forward IP4 packets.
Definition: fib_types.h:133
fib_entry_delegate_t * fib_entry_delegate_find_or_add(fib_entry_t *fib_entry, fib_entry_delegate_type_t fdt)
u8 *(* fib_entry_delegate_format_t)(const fib_entry_delegate_t *fed, u8 *s)
typedef for printing a delegate
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
static u8 * fib_entry_delegate_fmt_export(const fib_entry_delegate_t *fed, u8 *s)
Print a delegate that represents attached-export tracking.