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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
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>
20 #include <vnet/vxlan-gpe/vxlan_gpe.h>
21 #include <vnet/vxlan-gpe/vxlan_gpe.h>
22 #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_packet.h>
23 #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h>
24 #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_util.h>
26 /* Statistics (not really errors) */
27 #define foreach_vxlan_gpe_decap_ioam_v4_error \
28 _(DECAPSULATED, "good packets decapsulated")
30 static char *vxlan_gpe_decap_ioam_v4_error_strings[] = {
31 #define _(sym,string) string,
32 foreach_vxlan_gpe_decap_ioam_v4_error
38 #define _(sym,str) VXLAN_GPE_DECAP_IOAM_V4_ERROR_##sym,
39 foreach_vxlan_gpe_decap_ioam_v4_error
41 VXLAN_GPE_DECAP_IOAM_V4_N_ERROR,
42 } vxlan_gpe_decap_ioam_v4_error_t;
46 vxlan_gpe_decap_ioam_v4_two_inline (vlib_main_t * vm,
47 vlib_node_runtime_t * node,
48 vxlan_gpe_main_t * ngm,
49 vlib_buffer_t * b0, vlib_buffer_t * b1,
50 u32 * next0, u32 * next1)
52 vxlan_gpe_ioam_main_t *hm = &vxlan_gpe_ioam_main;
54 *next0 = *next1 = hm->decap_v4_next_override;
55 vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node, b0, next0,
56 VXLAN_GPE_DECAP_IOAM_V4_NEXT_DROP,
58 vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node, b1, next1,
59 VXLAN_GPE_DECAP_IOAM_V4_NEXT_DROP,
66 vxlan_gpe_decap_ioam (vlib_main_t * vm,
67 vlib_node_runtime_t * node,
68 vlib_frame_t * from_frame, u8 is_ipv6)
70 u32 n_left_from, next_index, *from, *to_next;
71 vxlan_gpe_main_t *ngm = &vxlan_gpe_main;
72 vxlan_gpe_ioam_main_t *hm = &vxlan_gpe_ioam_main;
74 from = vlib_frame_vector_args (from_frame);
75 n_left_from = from_frame->n_vectors;
77 next_index = node->cached_next_index;
79 while (n_left_from > 0)
83 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
85 while (n_left_from >= 4 && n_left_to_next >= 2)
88 vlib_buffer_t *b0, *b1;
91 next0 = next1 = hm->decap_v4_next_override;
93 /* Prefetch next iteration. */
95 vlib_buffer_t *p2, *p3;
97 p2 = vlib_get_buffer (vm, from[2]);
98 p3 = vlib_get_buffer (vm, from[3]);
100 vlib_prefetch_buffer_header (p2, LOAD);
101 vlib_prefetch_buffer_header (p3, LOAD);
103 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
104 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
116 b0 = vlib_get_buffer (vm, bi0);
117 b1 = vlib_get_buffer (vm, bi1);
120 vlib_buffer_advance (b0,
121 -(word) (sizeof (udp_header_t) +
122 sizeof (ip4_header_t) +
123 sizeof (vxlan_gpe_header_t)));
124 vlib_buffer_advance (b1,
125 -(word) (sizeof (udp_header_t) +
126 sizeof (ip4_header_t) +
127 sizeof (vxlan_gpe_header_t)));
129 vxlan_gpe_decap_ioam_v4_two_inline (vm, node, ngm, b0, b1,
133 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
134 n_left_to_next, bi0, bi1, next0,
137 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
139 vxlan_gpe_ioam_v4_trace_t *tr = vlib_add_trace (vm, node, b0,
144 while (n_left_from > 0 && n_left_to_next > 0)
148 u32 next0 = hm->decap_v4_next_override;
157 b0 = vlib_get_buffer (vm, bi0);
160 vlib_buffer_advance (b0,
161 -(word) (sizeof (udp_header_t) +
162 sizeof (ip4_header_t) +
163 sizeof (vxlan_gpe_header_t)));
165 next0 = hm->decap_v4_next_override;
166 vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node, b0,
168 VXLAN_GPE_DECAP_IOAM_V4_NEXT_DROP,
171 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
173 vxlan_gpe_ioam_v4_trace_t *tr = vlib_add_trace (vm, node, b0,
176 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
177 n_left_to_next, bi0, next0);
180 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
183 return from_frame->n_vectors;
188 vxlan_gpe_decap_ioam_v4 (vlib_main_t * vm,
189 vlib_node_runtime_t * node,
190 vlib_frame_t * from_frame)
192 return vxlan_gpe_decap_ioam (vm, node, from_frame, 0);
197 VLIB_REGISTER_NODE (vxlan_gpe_decap_ioam_v4_node) = {
198 .function = vxlan_gpe_decap_ioam_v4,
199 .name = "vxlan-gpe-decap-ioam-v4",
200 .vector_size = sizeof (u32),
201 .format_trace = format_vxlan_gpe_ioam_v4_trace,
202 .type = VLIB_NODE_TYPE_INTERNAL,
204 .n_errors = ARRAY_LEN(vxlan_gpe_decap_ioam_v4_error_strings),
205 .error_strings = vxlan_gpe_decap_ioam_v4_error_strings,
207 .n_next_nodes = VXLAN_GPE_DECAP_IOAM_V4_N_NEXT,
210 [VXLAN_GPE_DECAP_IOAM_V4_NEXT_POP] = "vxlan-gpe-pop-ioam-v4",
211 [VXLAN_GPE_DECAP_IOAM_V4_NEXT_DROP] = "error-drop",
218 * fd.io coding-style-patch-verification: ON
221 * eval: (c-set-style "gnu")