FD.io VPP  v21.10.1-2-g0a485f517
Vector Packet Processing
ioam_encap.c
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1 /*
2  * Copyright (c) 2015 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 <vppinfra/error.h>
16 #include <vppinfra/hash.h>
17 #include <vnet/vnet.h>
18 #include <vnet/ip/ip.h>
19 #include <vnet/ethernet/ethernet.h>
24 
25 /* Statistics (not really errors) */
26 #define foreach_vxlan_gpe_encap_ioam_v4_error \
27 _(ENCAPSULATED, "good packets encapsulated")
28 
30 #define _(sym,string) string,
32 #undef _
33 };
34 
35 typedef enum
36 {
37 #define _(sym,str) VXLAN_GPE_ENCAP_IOAM_V4_ERROR_##sym,
39 #undef _
42 
43 typedef enum
44 {
49 
50 
51 always_inline void
54  vxlan_gpe_main_t * ngm,
55  vlib_buffer_t * b0, vlib_buffer_t * b1,
56  u32 * next0, u32 * next1)
57 {
61  0 /* use_adj */ );
64  0 /* use_adj */ );
65 }
66 
67 
68 static uword
72 {
73  u32 n_left_from, next_index, *from, *to_next;
75 
77  n_left_from = from_frame->n_vectors;
78 
79  next_index = node->cached_next_index;
80 
81  while (n_left_from > 0)
82  {
83  u32 n_left_to_next;
84 
85  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
86 
87  while (n_left_from >= 4 && n_left_to_next >= 2)
88  {
89  u32 bi0, bi1;
90  vlib_buffer_t *b0, *b1;
91  u32 next0, next1;
92 
94 
95  /* Prefetch next iteration. */
96  {
97  vlib_buffer_t *p2, *p3;
98 
99  p2 = vlib_get_buffer (vm, from[2]);
100  p3 = vlib_get_buffer (vm, from[3]);
101 
102  vlib_prefetch_buffer_header (p2, LOAD);
103  vlib_prefetch_buffer_header (p3, LOAD);
104 
105  CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
106  CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
107  }
108 
109  bi0 = from[0];
110  bi1 = from[1];
111  to_next[0] = bi0;
112  to_next[1] = bi1;
113  from += 2;
114  to_next += 2;
115  n_left_to_next -= 2;
116  n_left_from -= 2;
117 
118  b0 = vlib_get_buffer (vm, bi0);
119  b1 = vlib_get_buffer (vm, bi1);
120 
122  &next0, &next1);
123 
124 
126  n_left_to_next, bi0, bi1, next0,
127  next1);
128  }
129 
130  while (n_left_from > 0 && n_left_to_next > 0)
131  {
132  u32 bi0;
133  vlib_buffer_t *b0;
135 
136  bi0 = from[0];
137  to_next[0] = bi0;
138  from += 1;
139  to_next += 1;
140  n_left_from -= 1;
141  n_left_to_next -= 1;
142 
143  b0 = vlib_get_buffer (vm, bi0);
144 
146  &next0,
148  0 /* use_adj */ );
149 
150  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
151  {
153  sizeof (*tr));
154  }
156  n_left_to_next, bi0, next0);
157  }
158 
159  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
160  }
161 
162  return from_frame->n_vectors;
163 }
164 
165 
166 
167 /* *INDENT-OFF* */
169  .function = vxlan_gpe_encap_ioam_v4,
170  .name = "vxlan-gpe-encap-ioam-v4",
171  .vector_size = sizeof (u32),
172  .format_trace = format_vxlan_gpe_ioam_v4_trace,
174 
176  .error_strings = vxlan_gpe_encap_ioam_v4_error_strings,
177 
178  .n_next_nodes = VXLAN_GPE_ENCAP_IOAM_V4_N_NEXT,
179 
180  .next_nodes = {
182  [VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP] = "error-drop",
183  },
184 };
185 /* *INDENT-ON* */
186 
187 
188 /*
189  * fd.io coding-style-patch-verification: ON
190  *
191  * Local Variables:
192  * eval: (c-set-style "gnu")
193  * End:
194  */
vxlan_gpe_encap_decap_ioam_v4_one_inline
static void vxlan_gpe_encap_decap_ioam_v4_one_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_buffer_t *b0, u32 *next0, u32 drop_node_val, u8 use_adj)
Definition: vxlan_gpe_ioam_util.h:84
vlib_prefetch_buffer_header
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:231
next_index
nat44_ei_hairpin_src_next_t next_index
Definition: nat44_ei_hairpinning.c:412
vlib_get_buffer
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:111
vxlan_gpe_encap_ioam_v4
static uword vxlan_gpe_encap_ioam_v4(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: ioam_encap.c:69
foreach_vxlan_gpe_encap_ioam_v4_error
#define foreach_vxlan_gpe_encap_ioam_v4_error
Definition: ioam_encap.c:26
VLIB_NODE_TYPE_INTERNAL
@ VLIB_NODE_TYPE_INTERNAL
Definition: node.h:72
vxlan_gpe_ioam_packet.h
node
vlib_main_t vlib_node_runtime_t * node
Definition: nat44_ei.c:3047
vxlan_gpe_main_t
Struct for VXLAN GPE node state.
Definition: vxlan_gpe.h:197
vxlan_gpe_encap_ioam_v4_error_strings
static char * vxlan_gpe_encap_ioam_v4_error_strings[]
Definition: ioam_encap.c:29
vm
vlib_main_t * vm
X-connect all packets from the HOST to the PHY.
Definition: nat44_ei.c:3047
from_frame
vlib_main_t vlib_node_runtime_t vlib_frame_t * from_frame
Definition: esp_encrypt.c:1328
VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP
@ VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP
Definition: ioam_encap.c:45
vlib_frame_t
Definition: node.h:372
vxlan_gpe_ioam.h
VXLAN_GPE_ENCAP_IOAM_V4_N_ERROR
@ VXLAN_GPE_ENCAP_IOAM_V4_N_ERROR
Definition: ioam_encap.c:40
ethernet.h
vxlan_gpe.h
VXLAN GPE definitions.
CLIB_PREFETCH
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:76
hash.h
error.h
vxlan_gpe_main
vxlan_gpe_main_t vxlan_gpe_main
Definition: vxlan_gpe.c:47
vxlan_gpe_encap_ioam_v4_two_inline
static void vxlan_gpe_encap_ioam_v4_two_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vxlan_gpe_main_t *ngm, vlib_buffer_t *b0, vlib_buffer_t *b1, u32 *next0, u32 *next1)
Definition: ioam_encap.c:52
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h:124
ARRAY_LEN
#define ARRAY_LEN(x)
Definition: clib.h:70
vlib_frame_vector_args
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:301
VXLAN_GPE_ENCAP_IOAM_V4_N_NEXT
@ VXLAN_GPE_ENCAP_IOAM_V4_N_NEXT
Definition: ioam_encap.c:47
uword
u64 uword
Definition: types.h:112
vxlan_gpe_ioam_util.h
CLIB_CACHE_LINE_BYTES
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:58
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
vxlan_gpe_encap_ioam_v4_next_t
vxlan_gpe_encap_ioam_v4_next_t
Definition: ioam_encap.c:43
vlib_validate_buffer_enqueue_x1
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
Definition: buffer_node.h:224
always_inline
#define always_inline
Definition: rdma_mlx5dv.h:23
vxlan_gpe_ioam_v4_trace_t
Definition: vxlan_gpe_ioam_util.h:23
vxlan_gpe_encap_ioam_v4_node
vlib_node_registration_t vxlan_gpe_encap_ioam_v4_node
(constructor) VLIB_REGISTER_NODE (vxlan_gpe_encap_ioam_v4_node)
Definition: ioam_encap.c:168
vlib_put_next_frame
vlib_put_next_frame(vm, node, next_index, 0)
ip.h
u32
unsigned int u32
Definition: types.h:88
vlib_main_t
Definition: main.h:102
vlib_add_trace
void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace.c:628
vlib_buffer_t::data
u8 data[]
Packet data.
Definition: buffer.h:204
format_vxlan_gpe_ioam_v4_trace
static u8 * format_vxlan_gpe_ioam_v4_trace(u8 *s, va_list *args)
Definition: vxlan_gpe_ioam_util.h:31
vlib_validate_buffer_enqueue_x2
#define vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1)
Finish enqueueing two buffers forward in the graph.
Definition: buffer_node.h:70
vxlan_gpe_encap_ioam_v4_error_t
vxlan_gpe_encap_ioam_v4_error_t
Definition: ioam_encap.c:35
vnet.h
vlib_node_runtime_t
Definition: node.h:454
from
from
Definition: nat44_ei_hairpinning.c:415
vlib_get_next_frame
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
Definition: node_funcs.h:395
n_left_from
n_left_from
Definition: nat44_ei_hairpinning.c:416
type
vl_api_fib_path_type_t type
Definition: fib_types.api:123
vlib_buffer_t::flags
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index,...
Definition: buffer.h:133
VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP
@ VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP
Definition: ioam_encap.c:46
vlib_buffer_t
VLIB buffer representation.
Definition: buffer.h:111
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169