1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
;;; pipe-skel.el - pipelined graph node skeleton
(require 'skeleton)
(define-skeleton pipeline-node-skel
"Insert a skeleton pipelined graph node"
nil
'(setq node-name (skeleton-read "Node Name: "))
'(setq uc-node-name (upcase node-name))
'(setq nstages (skeleton-read "Number of pipeline stages: "))
"
#include <vlib/vlib.h>
#include <clib/error.h>
/*
* Dump these counters via the \"show error\" CLI command
* FIXME: Add packet counter / error strings as desired
*/
#define foreach_" node-name "_error \\
_(ERROR1, \"sample counter/ error string\")
static char * " node-name "_error_strings[] = {
#define _(sym,string) string,
foreach_" node-name "_error
#undef _
};
/*
* packet error / counter enumeration
*
* To count and drop a vlib_buffer_t *b:
*
* Set b->error = node->errors[" uc-node-name "_ERROR_xxx];
* last_stage returns a disposition index bound to \"error-drop\"
*
* To manually increment the specific counter " uc-node-name "_ERROR1
*
* vlib_node_t *n = vlib_get_node (vm, " node-name ".index);
* u32 node_counter_base_index = n->error_heap_index;
* vlib_error_main_t * em = &vm->error_main;
* em->counters[node_counter_base_index + " uc-node-name "_ERROR1] += 1;
*
*/
typedef enum {
#define _(sym,str) " uc-node-name "_ERROR_##sym,
foreach_" node-name "_error
#undef _
" uc-node-name "_N_ERROR,
} " node-name "_error_t;
/*
* enumeration of per-packet dispositions
* FIXME: add dispositions as desired
*/
typedef enum { \n"
" " uc-node-name "_NEXT_NORMAL,\n"
" " uc-node-name "_N_NEXT,
} " node-name "_next_t;
#define NSTAGES " nstages "
/*
* Use the generic buffer metadata + first line of packet data prefetch
* stage function from <api/pipeline.h>. This is usually a Good Idea.
*/
#define stage0 generic_stage0
/*
* FIXME: add stage functions. Here is the function prototype:
*
* static inline void stageN (vlib_main_t * vm,
* vlib_node_runtime_t * node,
* u32 buffer_index)
*/
/*
* FIXME: the last pipeline stage returns the desired pkt next node index,
* from the " node-name "_next_t enum above
*/
static inline u32 last_stage (vlib_main_t *vm, vlib_node_runtime_t *node,
u32 bi)
{
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
b->error = node->errors[EXAMPLE_ERROR_ERROR1];
return " uc-node-name "_NEXT_NORMAL;
}
#include <api/pipeline.h>
static uword " node-name "_node_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return dispatch_pipeline (vm, node, frame);
}
static VLIB_REGISTER_NODE (example_node) = {
.function = " node-name "_node_fn,
.name = \"" node-name "-node\",
.vector_size = sizeof (u32),
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN(" node-name "_error_strings),
.error_strings = " node-name "_error_strings,
.n_next_nodes = " uc-node-name "_N_NEXT,
/* edit / add dispositions here */
.next_nodes = {
[" uc-node-name "_NEXT_NORMAL] = \"error-drop\",
},
};
/*
* packet generator definition to push superframes of data into the
* new graph node. Cut and paste into <file>, then
* \"exec <file>\", \"pa enable test\" at the QVNET prompt...
*
packet-generator new {
name test
limit 100
node " node-name "-node
size 374-374
data { hex 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 }
}
*/
")
|
