FD.io VPP  v20.05.1-6-gf53edbc3b
Vector Packet Processing
nsh_md2_ioam_node.c
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1 /*
2  * Copyright (c) 2017 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 #include <vlib/vlib.h>
16 #include <vnet/vnet.h>
17 #include <vnet/pg/pg.h>
18 #include <vppinfra/error.h>
19 #include <vnet/ethernet/ethernet.h>
20 #include <vnet/ip/ip.h>
21 #include <nsh/nsh.h>
22 #include <nsh/nsh_packet.h>
24 
25 typedef struct
26 {
27  u32 next_index;
28  u32 flow_label;
30 
33 /* packet trace format function */
34 static u8 *
35 format_export_trace (u8 * s, va_list * args)
36 {
37  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
38  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
39  export_trace_t *t = va_arg (*args, export_trace_t *);
40 
41  s = format (s, "EXPORT: flow_label %d, next index %d",
42  t->flow_label, t->next_index);
43  return s;
44 }
45 
47 
48 #define foreach_export_error \
49 _(RECORDED, "Packets recorded for export")
50 
51 typedef enum
52 {
53 #define _(sym,str) EXPORT_ERROR_##sym,
55 #undef _
58 
59 static char *export_error_strings[] = {
60 #define _(sym,string) string,
62 #undef _
63 };
64 
65 typedef enum
66 {
70 
71 always_inline void
72 copy3cachelines (void *dst, const void *src, size_t n)
73 {
74 
75  u64 *copy_dst, *copy_src;
76  int i;
77  copy_dst = (u64 *) dst;
78  copy_src = (u64 *) src;
80  {
81  for (i = 0; i < n / 64; i++)
82  {
83  copy_dst[0] = copy_src[0];
84  copy_dst[1] = copy_src[1];
85  copy_dst[2] = copy_src[2];
86  copy_dst[3] = copy_src[3];
87  copy_dst[4] = copy_src[4];
88  copy_dst[5] = copy_src[5];
89  copy_dst[6] = copy_src[6];
90  copy_dst[7] = copy_src[7];
91  copy_dst += 8;
92  copy_src += 8;
93  }
94  return;
95  }
96  for (i = 0; i < 3; i++)
97  {
98  copy_dst[0] = copy_src[0];
99  copy_dst[1] = copy_src[1];
100  copy_dst[2] = copy_src[2];
101  copy_dst[3] = copy_src[3];
102  copy_dst[4] = copy_src[4];
103  copy_dst[5] = copy_src[5];
104  copy_dst[6] = copy_src[6];
105  copy_dst[7] = copy_src[7];
106  copy_dst += 8;
107  copy_src += 8;
108  }
109 }
110 
111 static void
113  vlib_buffer_t * pak_buf)
114 {
115  /* Todo: on implementing analyse */
116 }
117 
118 static uword
121 {
123  ioam_export_node_common (em, vm, node, frame, ip4_header_t, length,
124  ip_version_and_header_length,
127  return frame->n_vectors;
128 }
129 
130 /*
131  * Node for iOAM export
132  */
133 /* *INDENT-OFF* */
135 {
136  .function = nsh_md2_ioam_export_node_fn,
137  .name = "nsh-md2-ioam-export",
138  .vector_size = sizeof (u32),
139  .format_trace = format_export_trace,
141  .n_errors = ARRAY_LEN (export_error_strings),
142  .error_strings = export_error_strings,
143  .n_next_nodes = EXPORT_N_NEXT,
144  /* edit / add dispositions here */
145  .next_nodes =
146  {[EXPORT_NEXT_NSH_MD2_IOAM_INPUT] = "nsh-pop"},
147 };
148 /* *INDENT-ON* */
149 
150 /*
151  * fd.io coding-style-patch-verification: ON
152  *
153  * Local Variables:
154  * eval: (c-set-style "gnu")
155  * End:
156  */
static uword nsh_md2_ioam_export_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
#define CLIB_UNUSED(x)
Definition: clib.h:86
unsigned long u64
Definition: types.h:89
static char * export_error_strings[]
u32 next_index
Definition: node.c:27
vl_api_address_t src
Definition: gre.api:54
export_next_t
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define foreach_export_error
unsigned char u8
Definition: types.h:56
unsigned int u32
Definition: types.h:88
vl_api_fib_path_type_t type
Definition: fib_types.api:123
static void nsh_md2_ioam_export_fixup_func(vlib_buffer_t *export_buf, vlib_buffer_t *pak_buf)
#define PREDICT_FALSE(x)
Definition: clib.h:118
u32 flow_label
Definition: node.c:28
#define always_inline
Definition: ipsec.h:28
vl_api_address_t dst
Definition: gre.api:55
vlib_main_t * vm
Definition: in2out_ed.c:1599
ioam_export_main_t nsh_md2_ioam_export_main
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
u16 n_vectors
Definition: node.h:399
sll srl srl sll sra u16x4 i
Definition: vector_sse42.h:317
#define ARRAY_LEN(x)
Definition: clib.h:66
vlib_main_t vlib_node_runtime_t * node
Definition: in2out_ed.c:1599
vlib_node_registration_t nsh_md2_ioam_export_node
(constructor) VLIB_REGISTER_NODE (nsh_md2_ioam_export_node)
static void copy3cachelines(void *dst, const void *src, size_t n)
struct _vlib_node_registration vlib_node_registration_t
VLIB buffer representation.
Definition: buffer.h:102
#define ioam_export_node_common(EM, VM, N, F, HTYPE, L, V, NEXT, FIXUP_FUNC)
Definition: ioam_export.h:469
u64 uword
Definition: types.h:112
#define DEFAULT_EXPORT_SIZE
Definition: ioam_export.h:83
vlib_node_registration_t export_node
(constructor) VLIB_REGISTER_NODE (export_node)
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
Definition: in2out_ed.c:1600
export_error_t
static u8 * format_export_trace(u8 *s, va_list *args)