Line data Source code
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>
20 : #include <vnet/vxlan-gpe/vxlan_gpe.h>
21 : #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_packet.h>
22 : #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h>
23 : #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_util.h>
24 :
25 : /* Statistics (not really errors) */
26 : #define foreach_vxlan_gpe_encap_ioam_v4_error \
27 : _(ENCAPSULATED, "good packets encapsulated")
28 :
29 : static char *vxlan_gpe_encap_ioam_v4_error_strings[] = {
30 : #define _(sym,string) string,
31 : foreach_vxlan_gpe_encap_ioam_v4_error
32 : #undef _
33 : };
34 :
35 : typedef enum
36 : {
37 : #define _(sym,str) VXLAN_GPE_ENCAP_IOAM_V4_ERROR_##sym,
38 : foreach_vxlan_gpe_encap_ioam_v4_error
39 : #undef _
40 : VXLAN_GPE_ENCAP_IOAM_V4_N_ERROR,
41 : } vxlan_gpe_encap_ioam_v4_error_t;
42 :
43 : typedef enum
44 : {
45 : VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP,
46 : VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP,
47 : VXLAN_GPE_ENCAP_IOAM_V4_N_NEXT
48 : } vxlan_gpe_encap_ioam_v4_next_t;
49 :
50 :
51 : always_inline void
52 0 : vxlan_gpe_encap_ioam_v4_two_inline (vlib_main_t * vm,
53 : vlib_node_runtime_t * node,
54 : vxlan_gpe_main_t * ngm,
55 : vlib_buffer_t * b0, vlib_buffer_t * b1,
56 : u32 * next0, u32 * next1)
57 : {
58 0 : *next0 = *next1 = VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP;
59 0 : vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node, b0, next0,
60 : VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP,
61 : 0 /* use_adj */ );
62 0 : vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node, b1, next1,
63 : VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP,
64 : 0 /* use_adj */ );
65 0 : }
66 :
67 :
68 : static uword
69 0 : vxlan_gpe_encap_ioam_v4 (vlib_main_t * vm,
70 : vlib_node_runtime_t * node,
71 : vlib_frame_t * from_frame)
72 : {
73 : u32 n_left_from, next_index, *from, *to_next;
74 0 : vxlan_gpe_main_t *ngm = &vxlan_gpe_main;
75 :
76 0 : from = vlib_frame_vector_args (from_frame);
77 0 : n_left_from = from_frame->n_vectors;
78 :
79 0 : next_index = node->cached_next_index;
80 :
81 0 : while (n_left_from > 0)
82 : {
83 : u32 n_left_to_next;
84 :
85 0 : vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
86 :
87 0 : 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 :
93 0 : next0 = next1 = VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP;
94 :
95 : /* Prefetch next iteration. */
96 : {
97 : vlib_buffer_t *p2, *p3;
98 :
99 0 : p2 = vlib_get_buffer (vm, from[2]);
100 0 : p3 = vlib_get_buffer (vm, from[3]);
101 :
102 0 : vlib_prefetch_buffer_header (p2, LOAD);
103 0 : vlib_prefetch_buffer_header (p3, LOAD);
104 :
105 0 : CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
106 0 : CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
107 : }
108 :
109 0 : bi0 = from[0];
110 0 : bi1 = from[1];
111 0 : to_next[0] = bi0;
112 0 : to_next[1] = bi1;
113 0 : from += 2;
114 0 : to_next += 2;
115 0 : n_left_to_next -= 2;
116 0 : n_left_from -= 2;
117 :
118 0 : b0 = vlib_get_buffer (vm, bi0);
119 0 : b1 = vlib_get_buffer (vm, bi1);
120 :
121 0 : vxlan_gpe_encap_ioam_v4_two_inline (vm, node, ngm, b0, b1,
122 : &next0, &next1);
123 :
124 :
125 0 : vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
126 : n_left_to_next, bi0, bi1, next0,
127 : next1);
128 : }
129 :
130 0 : while (n_left_from > 0 && n_left_to_next > 0)
131 : {
132 : u32 bi0;
133 : vlib_buffer_t *b0;
134 0 : u32 next0 = VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP;
135 :
136 0 : bi0 = from[0];
137 0 : to_next[0] = bi0;
138 0 : from += 1;
139 0 : to_next += 1;
140 0 : n_left_from -= 1;
141 0 : n_left_to_next -= 1;
142 :
143 0 : b0 = vlib_get_buffer (vm, bi0);
144 :
145 0 : vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node, b0,
146 : &next0,
147 : VXLAN_GPE_ENCAP_IOAM_V4_NEXT_DROP,
148 : 0 /* use_adj */ );
149 :
150 0 : if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
151 : {
152 0 : vxlan_gpe_ioam_v4_trace_t *tr = vlib_add_trace (vm, node, b0,
153 : sizeof (*tr));
154 : }
155 0 : vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
156 : n_left_to_next, bi0, next0);
157 : }
158 :
159 0 : vlib_put_next_frame (vm, node, next_index, n_left_to_next);
160 : }
161 :
162 0 : return from_frame->n_vectors;
163 : }
164 :
165 :
166 :
167 : /* *INDENT-OFF* */
168 110920 : VLIB_REGISTER_NODE (vxlan_gpe_encap_ioam_v4_node) = {
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,
173 : .type = VLIB_NODE_TYPE_INTERNAL,
174 :
175 : .n_errors = ARRAY_LEN(vxlan_gpe_encap_ioam_v4_error_strings),
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 = {
181 : [VXLAN_GPE_ENCAP_IOAM_V4_NEXT_IP4_LOOKUP] = "ip4-lookup",
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 : */
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