summaryrefslogtreecommitdiffstats
path: root/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_node.c
blob: 839fd80b443c359612c469065779a89de76434dc (plain)
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
 * Copyright (c) 2016 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.
 */
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vppinfra/error.h>
#include <vnet/ip/ip.h>
#include <vnet/vxlan-gpe/vxlan_gpe.h>
#include <vnet/vxlan-gpe/vxlan_gpe_packet.h>
#include <ioam/export-common/ioam_export.h>

typedef struct
{
  u32 next_index;
  u32 flow_label;
} export_trace_t;

/* packet trace format function */
static u8 *
format_export_trace (u8 * s, va_list * args)
{
  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  export_trace_t *t = va_arg (*args, export_trace_t *);

  s = format (s, "EXPORT: flow_label %d, next index %d",
	      t->flow_label, t->next_index);
  return s;
}

vlib_node_registration_t vxlan_export_node;
extern vlib_node_registration_t export_node;
extern ioam_export_main_t vxlan_gpe_ioam_export_main;

#define foreach_export_error \
_(RECORDED, "Packets recorded for export")

typedef enum
{
#define _(sym,str) EXPORT_ERROR_##sym,
  foreach_export_error
#undef _
    EXPORT_N_ERROR,
} export_error_t;

static char *export_error_strings[] = {
#define _(sym,string) string,
  foreach_export_error
#undef _
};

typedef enum
{
  EXPORT_NEXT_VXLAN_GPE_INPUT,
  EXPORT_N_NEXT,
} export_next_t;

always_inline void
copy3cachelines (void *dst, const void *src, size_t n)
{
#if 0
  if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE))
    {
      /* Copy only the first 1/2 cache lines whatever is available */
      if (n >= 64)
	clib_mov64 ((u8 *) dst, (const u8 *) src);
      if (n >= 128)
	clib_mov64 ((u8 *) dst + 64, (const u8 *) src + 64);
      return;
    }
  clib_mov64 ((u8 *) dst, (const u8 *) src);
  clib_mov64 ((u8 *) dst + 64, (const u8 *) src + 64);
  clib_mov64 ((u8 *) dst + 128, (const u8 *) src + 128);
#endif
#if 1

  u64 *copy_dst, *copy_src;
  int i;
  copy_dst = (u64 *) dst;
  copy_src = (u64 *) src;
  if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE))
    {
      for (i = 0; i < n / 64; i++)
	{
	  copy_dst[0] = copy_src[0];
	  copy_dst[1] = copy_src[1];
	  copy_dst[2] = copy_src[2];
	  copy_dst[3] = copy_src[3];
	  copy_dst[4] = copy_src[4];
	  copy_dst[5] = copy_src[5];
	  copy_dst[6] = copy_src[6];
	  copy_dst[7] = copy_src[7];
	  copy_dst += 8;
	  copy_src += 8;
	}
      return;
    }
  for (i = 0; i < 3; i++)
    {
      copy_dst[0] = copy_src[0];
      copy_dst[1] = copy_src[1];
      copy_dst[2] = copy_src[2];
      copy_dst[3] = copy_src[3];
      copy_dst[4] = copy_src[4];
      copy_dst[5] = copy_src[5];
      copy_dst[6] = copy_src[6];
      copy_dst[7] = copy_src[7];
      copy_dst += 8;
      copy_src += 8;
    }
#endif
}

static void
vxlan_gpe_export_fixup_func (vlib_buffer_t * export_buf,
			     vlib_buffer_t * pak_buf)
{
  /* Todo: on implementing VXLAN GPE analyse */
}

static uword
vxlan_gpe_export_node_fn (vlib_main_t * vm,
			  vlib_node_runtime_t * node, vlib_frame_t * frame)
{
  ioam_export_main_t *em = &vxlan_gpe_ioam_export_main;
  ioam_export_node_common (em, vm, node, frame, ip4_header_t, length,
			   ip_version_and_header_length,
			   EXPORT_NEXT_VXLAN_GPE_INPUT,
			   vxlan_gpe_export_fixup_func);
  return frame->n_vectors;
}

/*
 * Node for VXLAN-GPE export
 */
VLIB_REGISTER_NODE (vxlan_export_node) =
{
  .function = vxlan_gpe_export_node_fn,
  .name = "vxlan-gpe-ioam-export",
  .vector_size = sizeof (u32),
  .format_trace = format_export_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN (export_error_strings),
  .error_strings = export_error_strings,
  .n_next_nodes = EXPORT_N_NEXT,
    /* edit / add dispositions here */
    .next_nodes =
  {[EXPORT_NEXT_VXLAN_GPE_INPUT] = "vxlan-gpe-pop-ioam-v4"},
};

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */