2 * Copyright (c) 2017-2019 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.
16 #include <vnet/udp/udp_encap.h>
17 #include <vnet/udp/udp.h>
19 typedef struct udp4_encap_trace_t_
25 typedef struct udp6_encap_trace_t_
31 extern vlib_combined_counter_main_t udp_encap_counters;
34 format_udp4_encap_trace (u8 * s, va_list * args)
36 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
37 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
38 udp4_encap_trace_t *t;
40 t = va_arg (*args, udp4_encap_trace_t *);
42 s = format (s, "%U\n %U",
43 format_ip4_header, &t->ip, sizeof (t->ip),
44 format_udp_header, &t->udp, sizeof (t->udp));
49 format_udp6_encap_trace (u8 * s, va_list * args)
51 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
52 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
53 udp6_encap_trace_t *t;
55 t = va_arg (*args, udp6_encap_trace_t *);
57 s = format (s, "%U\n %U",
58 format_ip6_header, &t->ip, sizeof (t->ip),
59 format_udp_header, &t->udp, sizeof (t->udp));
64 udp_encap_inline (vlib_main_t * vm,
65 vlib_node_runtime_t * node,
66 vlib_frame_t * frame, int is_encap_v6)
68 vlib_combined_counter_main_t *cm = &udp_encap_counters;
69 u32 *from = vlib_frame_vector_args (frame);
70 u32 n_left_from, n_left_to_next, *to_next, next_index;
71 u32 thread_index = vm->thread_index;
73 n_left_from = frame->n_vectors;
74 next_index = node->cached_next_index;
76 while (n_left_from > 0)
78 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
80 while (n_left_from >= 4 && n_left_to_next >= 2)
82 vlib_buffer_t *b0, *b1;
83 udp_encap_t *ue0, *ue1;
87 /* Prefetch next iteration. */
89 vlib_buffer_t *p2, *p3;
91 p2 = vlib_get_buffer (vm, from[2]);
92 p3 = vlib_get_buffer (vm, from[3]);
94 vlib_prefetch_buffer_header (p2, STORE);
95 vlib_prefetch_buffer_header (p3, STORE);
98 bi0 = to_next[0] = from[0];
99 bi1 = to_next[1] = from[1];
106 b0 = vlib_get_buffer (vm, bi0);
107 b1 = vlib_get_buffer (vm, bi1);
109 uei0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
110 uei1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX];
112 vlib_increment_combined_counter (cm, thread_index, uei0, 1,
113 vlib_buffer_length_in_chain (vm,
115 vlib_increment_combined_counter (cm, thread_index, uei1, 1,
116 vlib_buffer_length_in_chain (vm,
119 /* Rewrite packet header and updates lengths. */
120 ue0 = udp_encap_get (uei0);
121 ue1 = udp_encap_get (uei1);
127 sizeof (udp_header_t) + sizeof (ip6_header_t);
128 ip_udp_encap_two (vm, b0, b1, (u8 *) & ue0->ue_hdrs,
129 (u8 *) & ue1->ue_hdrs, n_bytes, 0);
130 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
132 udp6_encap_trace_t *tr =
133 vlib_add_trace (vm, node, b0, sizeof (*tr));
134 tr->udp = ue0->ue_hdrs.ip6.ue_udp;
135 tr->ip = ue0->ue_hdrs.ip6.ue_ip6;
137 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
139 udp6_encap_trace_t *tr =
140 vlib_add_trace (vm, node, b1, sizeof (*tr));
141 tr->udp = ue1->ue_hdrs.ip6.ue_udp;
142 tr->ip = ue1->ue_hdrs.ip6.ue_ip6;
148 sizeof (udp_header_t) + sizeof (ip4_header_t);
150 ip_udp_encap_two (vm, b0, b1,
151 (u8 *) & ue0->ue_hdrs,
152 (u8 *) & ue1->ue_hdrs, n_bytes, 1);
154 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
156 udp4_encap_trace_t *tr =
157 vlib_add_trace (vm, node, b0, sizeof (*tr));
158 tr->udp = ue0->ue_hdrs.ip4.ue_udp;
159 tr->ip = ue0->ue_hdrs.ip4.ue_ip4;
161 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
163 udp4_encap_trace_t *tr =
164 vlib_add_trace (vm, node, b1, sizeof (*tr));
165 tr->udp = ue1->ue_hdrs.ip4.ue_udp;
166 tr->ip = ue1->ue_hdrs.ip4.ue_ip4;
170 next0 = ue0->ue_dpo.dpoi_next_node;
171 next1 = ue1->ue_dpo.dpoi_next_node;
172 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ue0->ue_dpo.dpoi_index;
173 vnet_buffer (b1)->ip.adj_index[VLIB_TX] = ue1->ue_dpo.dpoi_index;
175 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
176 to_next, n_left_to_next,
177 bi0, bi1, next0, next1);
180 while (n_left_from > 0 && n_left_to_next > 0)
182 u32 bi0, next0, uei0;
186 bi0 = to_next[0] = from[0];
193 b0 = vlib_get_buffer (vm, bi0);
195 uei0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
197 /* Rewrite packet header and updates lengths. */
198 ue0 = udp_encap_get (uei0);
200 vlib_increment_combined_counter (cm, thread_index, uei0, 1,
201 vlib_buffer_length_in_chain (vm,
208 sizeof (udp_header_t) + sizeof (ip6_header_t);
209 ip_udp_encap_one (vm, b0, (u8 *) & ue0->ue_hdrs.ip6, n_bytes,
212 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
214 udp6_encap_trace_t *tr =
215 vlib_add_trace (vm, node, b0, sizeof (*tr));
216 tr->udp = ue0->ue_hdrs.ip6.ue_udp;
217 tr->ip = ue0->ue_hdrs.ip6.ue_ip6;
223 sizeof (udp_header_t) + sizeof (ip4_header_t);
225 ip_udp_encap_one (vm, b0, (u8 *) & ue0->ue_hdrs.ip4, n_bytes,
228 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
230 udp4_encap_trace_t *tr =
231 vlib_add_trace (vm, node, b0, sizeof (*tr));
232 tr->udp = ue0->ue_hdrs.ip4.ue_udp;
233 tr->ip = ue0->ue_hdrs.ip4.ue_ip4;
237 next0 = ue0->ue_dpo.dpoi_next_node;
238 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ue0->ue_dpo.dpoi_index;
240 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
241 to_next, n_left_to_next,
245 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
248 return frame->n_vectors;
251 VLIB_NODE_FN (udp4_encap_node) (vlib_main_t * vm,
252 vlib_node_runtime_t * node,
253 vlib_frame_t * frame)
255 return udp_encap_inline (vm, node, frame, 0);
258 VLIB_NODE_FN (udp6_encap_node) (vlib_main_t * vm,
259 vlib_node_runtime_t * node,
260 vlib_frame_t * frame)
262 return udp_encap_inline (vm, node, frame, 1);
266 VLIB_REGISTER_NODE (udp4_encap_node) = {
267 .name = "udp4-encap",
268 .vector_size = sizeof (u32),
270 .format_trace = format_udp4_encap_trace,
275 VLIB_REGISTER_NODE (udp6_encap_node) = {
276 .name = "udp6-encap",
277 .vector_size = sizeof (u32),
279 .format_trace = format_udp6_encap_trace,
287 * fd.io coding-style-patch-verification: ON
290 * eval: (c-set-style "gnu")