blob: bb7305d8d039770478387a953d4ef544f1003ae8 [file] [log] [blame]
Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
2 * node.c: udp packet processing
3 *
4 * Copyright (c) 2013 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#include <vlib/vlib.h>
19#include <vnet/pg/pg.h>
Dave Barach68b0fb02017-02-28 15:15:56 -050020#include <vnet/udp/udp.h>
21#include <vnet/udp/udp_packet.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070022#include <vppinfra/sparse_vec.h>
23
24udp_main_t udp_main;
25
Florin Coras3cbc04b2017-10-02 00:18:51 -070026#define foreach_udp_local_next \
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -080027 _ (PUNT4, "ip4-punt") \
28 _ (PUNT6, "ip6-punt") \
29 _ (DROP4, "ip4-drop") \
30 _ (DROP6, "ip6-drop") \
Chris Luke816f3e12016-06-14 16:24:47 -040031 _ (ICMP4_ERROR, "ip4-icmp-error") \
32 _ (ICMP6_ERROR, "ip6-icmp-error")
Ed Warnickecb9cada2015-12-08 15:45:58 -070033
Dave Barachd7cb1b52016-12-09 09:52:16 -050034typedef enum
35{
Florin Coras3cbc04b2017-10-02 00:18:51 -070036#define _(s,n) UDP_LOCAL_NEXT_##s,
37 foreach_udp_local_next
Ed Warnickecb9cada2015-12-08 15:45:58 -070038#undef _
Florin Coras3cbc04b2017-10-02 00:18:51 -070039 UDP_LOCAL_N_NEXT,
40} udp_local_next_t;
Ed Warnickecb9cada2015-12-08 15:45:58 -070041
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -080042#define udp_local_next_drop(is_ip4) ((is_ip4) ? UDP_LOCAL_NEXT_DROP4 : UDP_LOCAL_NEXT_DROP6)
43#define udp_local_next_punt(is_ip4) ((is_ip4) ? UDP_LOCAL_NEXT_PUNT4 : UDP_LOCAL_NEXT_PUNT6)
44
Dave Barachd7cb1b52016-12-09 09:52:16 -050045typedef struct
46{
Ed Warnickecb9cada2015-12-08 15:45:58 -070047 u16 src_port;
48 u16 dst_port;
Chris Luke816f3e12016-06-14 16:24:47 -040049 u8 bound;
Florin Coras3cbc04b2017-10-02 00:18:51 -070050} udp_local_rx_trace_t;
Ed Warnickecb9cada2015-12-08 15:45:58 -070051
Dave Barachd7cb1b52016-12-09 09:52:16 -050052u8 *
53format_udp_rx_trace (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070054{
55 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
56 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Coras3cbc04b2017-10-02 00:18:51 -070057 udp_local_rx_trace_t *t = va_arg (*args, udp_local_rx_trace_t *);
Dave Barachd7cb1b52016-12-09 09:52:16 -050058
Chris Luke816f3e12016-06-14 16:24:47 -040059 s = format (s, "UDP: src-port %d dst-port %d%s",
Dave Barachd7cb1b52016-12-09 09:52:16 -050060 clib_net_to_host_u16 (t->src_port),
61 clib_net_to_host_u16 (t->dst_port),
62 t->bound ? "" : " (no listener)");
Ed Warnickecb9cada2015-12-08 15:45:58 -070063 return s;
64}
65
Florin Coras3cbc04b2017-10-02 00:18:51 -070066vlib_node_registration_t udp4_local_node;
67vlib_node_registration_t udp6_local_node;
Ed Warnickecb9cada2015-12-08 15:45:58 -070068
69always_inline uword
Florin Coras3cbc04b2017-10-02 00:18:51 -070070udp46_local_inline (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -050071 vlib_node_runtime_t * node,
72 vlib_frame_t * from_frame, int is_ip4)
Ed Warnickecb9cada2015-12-08 15:45:58 -070073{
Damjan Marion615fc612017-04-03 14:56:08 +020074 udp_main_t *um = &udp_main;
Dave Barachd7cb1b52016-12-09 09:52:16 -050075 __attribute__ ((unused)) u32 n_left_from, next_index, *from, *to_next;
Chris Luke816f3e12016-06-14 16:24:47 -040076 word n_no_listener = 0;
Damjan Marion615fc612017-04-03 14:56:08 +020077 u8 punt_unknown = is_ip4 ? um->punt_unknown4 : um->punt_unknown6;
Ed Warnickecb9cada2015-12-08 15:45:58 -070078
79 from = vlib_frame_vector_args (from_frame);
80 n_left_from = from_frame->n_vectors;
81
82 next_index = node->cached_next_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -070083
84 while (n_left_from > 0)
85 {
86 u32 n_left_to_next;
87
Dave Barachd7cb1b52016-12-09 09:52:16 -050088 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
Ed Warnickecb9cada2015-12-08 15:45:58 -070089
90 while (n_left_from >= 4 && n_left_to_next >= 2)
91 {
92 u32 bi0, bi1;
Dave Barachd7cb1b52016-12-09 09:52:16 -050093 vlib_buffer_t *b0, *b1;
94 udp_header_t *h0 = 0, *h1 = 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -070095 u32 i0, i1, dst_port0, dst_port1;
Dave Barachd7cb1b52016-12-09 09:52:16 -050096 u32 advance0, advance1;
97 u32 error0, next0, error1, next1;
Ed Warnickecb9cada2015-12-08 15:45:58 -070098
99 /* Prefetch next iteration. */
100 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500101 vlib_buffer_t *p2, *p3;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700102
103 p2 = vlib_get_buffer (vm, from[2]);
104 p3 = vlib_get_buffer (vm, from[3]);
105
106 vlib_prefetch_buffer_header (p2, LOAD);
107 vlib_prefetch_buffer_header (p3, LOAD);
108
109 CLIB_PREFETCH (p2->data, sizeof (h0[0]), LOAD);
110 CLIB_PREFETCH (p3->data, sizeof (h1[0]), LOAD);
111 }
112
113 bi0 = from[0];
114 bi1 = from[1];
115 to_next[0] = bi0;
116 to_next[1] = bi1;
117 from += 2;
118 to_next += 2;
119 n_left_to_next -= 2;
120 n_left_from -= 2;
121
122 b0 = vlib_get_buffer (vm, bi0);
123 b1 = vlib_get_buffer (vm, bi1);
124
Dave Barachd7cb1b52016-12-09 09:52:16 -0500125 /* ip4/6_local hands us the ip header, not the udp header */
126 if (is_ip4)
127 {
128 advance0 = sizeof (ip4_header_t);
129 advance1 = sizeof (ip4_header_t);
130 }
131 else
132 {
133 advance0 = sizeof (ip6_header_t);
134 advance1 = sizeof (ip6_header_t);
135 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700136
Dave Barachd7cb1b52016-12-09 09:52:16 -0500137 if (PREDICT_FALSE (b0->current_length < advance0 + sizeof (*h0)))
138 {
139 error0 = UDP_ERROR_LENGTH_ERROR;
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800140 next0 = udp_local_next_drop (is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500141 }
142 else
143 {
144 vlib_buffer_advance (b0, advance0);
145 h0 = vlib_buffer_get_current (b0);
146 error0 = next0 = 0;
147 if (PREDICT_FALSE (clib_net_to_host_u16 (h0->length) >
148 vlib_buffer_length_in_chain (vm, b0)))
149 {
John Lo76f78ec2016-03-03 00:25:54 -0500150 error0 = UDP_ERROR_LENGTH_ERROR;
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800151 next0 = udp_local_next_drop (is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500152 }
153 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700154
Dave Barachd7cb1b52016-12-09 09:52:16 -0500155 if (PREDICT_FALSE (b1->current_length < advance1 + sizeof (*h1)))
156 {
157 error1 = UDP_ERROR_LENGTH_ERROR;
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800158 next1 = udp_local_next_drop (is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500159 }
160 else
161 {
162 vlib_buffer_advance (b1, advance1);
163 h1 = vlib_buffer_get_current (b1);
164 error1 = next1 = 0;
165 if (PREDICT_FALSE (clib_net_to_host_u16 (h1->length) >
166 vlib_buffer_length_in_chain (vm, b1)))
167 {
John Lo76f78ec2016-03-03 00:25:54 -0500168 error1 = UDP_ERROR_LENGTH_ERROR;
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800169 next1 = udp_local_next_drop (is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500170 }
171 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700172
Ed Warnickecb9cada2015-12-08 15:45:58 -0700173 /* Index sparse array with network byte order. */
174 dst_port0 = (error0 == 0) ? h0->dst_port : 0;
175 dst_port1 = (error1 == 0) ? h1->dst_port : 0;
Damjan Marion615fc612017-04-03 14:56:08 +0200176 sparse_vec_index2 (is_ip4 ? um->next_by_dst_port4 :
177 um->next_by_dst_port6,
178 dst_port0, dst_port1, &i0, &i1);
179 next0 = (error0 == 0) ?
180 vec_elt (is_ip4 ? um->next_by_dst_port4 : um->next_by_dst_port6,
181 i0) : next0;
182 next1 = (error1 == 0) ?
183 vec_elt (is_ip4 ? um->next_by_dst_port4 : um->next_by_dst_port6,
184 i1) : next1;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700185
Dave Barachd7cb1b52016-12-09 09:52:16 -0500186 if (PREDICT_FALSE (i0 == SPARSE_VEC_INVALID_INDEX))
187 {
188 // move the pointer back so icmp-error can find the
189 // ip packet header
190 vlib_buffer_advance (b0, -(word) advance0);
Chris Luke816f3e12016-06-14 16:24:47 -0400191
Dave Barachd7cb1b52016-12-09 09:52:16 -0500192 if (PREDICT_FALSE (punt_unknown))
193 {
194 b0->error = node->errors[UDP_ERROR_PUNT];
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800195 next0 = udp_local_next_punt (is_ip4);
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800196 }
Dave Barachd7cb1b52016-12-09 09:52:16 -0500197 else if (is_ip4)
198 {
199 icmp4_error_set_vnet_buffer (b0,
200 ICMP4_destination_unreachable,
201 ICMP4_destination_unreachable_port_unreachable,
202 0);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700203 next0 = UDP_LOCAL_NEXT_ICMP4_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500204 n_no_listener++;
205 }
206 else
207 {
208 icmp6_error_set_vnet_buffer (b0,
209 ICMP6_destination_unreachable,
210 ICMP6_destination_unreachable_port_unreachable,
211 0);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700212 next0 = UDP_LOCAL_NEXT_ICMP6_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500213 n_no_listener++;
214 }
215 }
216 else
217 {
218 b0->error = node->errors[UDP_ERROR_NONE];
219 // advance to the payload
220 vlib_buffer_advance (b0, sizeof (*h0));
221 }
Chris Luke816f3e12016-06-14 16:24:47 -0400222
Dave Barachd7cb1b52016-12-09 09:52:16 -0500223 if (PREDICT_FALSE (i1 == SPARSE_VEC_INVALID_INDEX))
224 {
225 // move the pointer back so icmp-error can find the
226 // ip packet header
227 vlib_buffer_advance (b1, -(word) advance1);
Chris Luke816f3e12016-06-14 16:24:47 -0400228
Dave Barachd7cb1b52016-12-09 09:52:16 -0500229 if (PREDICT_FALSE (punt_unknown))
230 {
231 b1->error = node->errors[UDP_ERROR_PUNT];
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800232 next1 = udp_local_next_punt (is_ip4);
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800233 }
Dave Barachd7cb1b52016-12-09 09:52:16 -0500234 else if (is_ip4)
235 {
236 icmp4_error_set_vnet_buffer (b1,
237 ICMP4_destination_unreachable,
238 ICMP4_destination_unreachable_port_unreachable,
239 0);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700240 next1 = UDP_LOCAL_NEXT_ICMP4_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500241 n_no_listener++;
242 }
243 else
244 {
245 icmp6_error_set_vnet_buffer (b1,
246 ICMP6_destination_unreachable,
247 ICMP6_destination_unreachable_port_unreachable,
248 0);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700249 next1 = UDP_LOCAL_NEXT_ICMP6_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500250 n_no_listener++;
251 }
252 }
253 else
254 {
255 b1->error = node->errors[UDP_ERROR_NONE];
256 // advance to the payload
257 vlib_buffer_advance (b1, sizeof (*h1));
258 }
259
260 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
261 {
Florin Coras3cbc04b2017-10-02 00:18:51 -0700262 udp_local_rx_trace_t *tr = vlib_add_trace (vm, node,
263 b0, sizeof (*tr));
Dave Barachd7cb1b52016-12-09 09:52:16 -0500264 if (b0->error != node->errors[UDP_ERROR_LENGTH_ERROR])
265 {
266 tr->src_port = h0 ? h0->src_port : 0;
267 tr->dst_port = h0 ? h0->dst_port : 0;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700268 tr->bound = (next0 != UDP_LOCAL_NEXT_ICMP4_ERROR &&
269 next0 != UDP_LOCAL_NEXT_ICMP6_ERROR);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500270 }
271 }
272 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
273 {
Florin Coras3cbc04b2017-10-02 00:18:51 -0700274 udp_local_rx_trace_t *tr = vlib_add_trace (vm, node,
275 b1, sizeof (*tr));
Dave Barachd7cb1b52016-12-09 09:52:16 -0500276 if (b1->error != node->errors[UDP_ERROR_LENGTH_ERROR])
277 {
278 tr->src_port = h1 ? h1->src_port : 0;
279 tr->dst_port = h1 ? h1->dst_port : 0;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700280 tr->bound = (next1 != UDP_LOCAL_NEXT_ICMP4_ERROR &&
281 next1 != UDP_LOCAL_NEXT_ICMP6_ERROR);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500282 }
283 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700284
Ed Warnickecb9cada2015-12-08 15:45:58 -0700285 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
286 to_next, n_left_to_next,
287 bi0, bi1, next0, next1);
288 }
Dave Barachd7cb1b52016-12-09 09:52:16 -0500289
Ed Warnickecb9cada2015-12-08 15:45:58 -0700290 while (n_left_from > 0 && n_left_to_next > 0)
291 {
292 u32 bi0;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500293 vlib_buffer_t *b0;
294 udp_header_t *h0 = 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700295 u32 i0, next0;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500296 u32 advance0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700297
298 bi0 = from[0];
299 to_next[0] = bi0;
300 from += 1;
301 to_next += 1;
302 n_left_from -= 1;
303 n_left_to_next -= 1;
304
305 b0 = vlib_get_buffer (vm, bi0);
306
Dave Barachd7cb1b52016-12-09 09:52:16 -0500307 /* ip4/6_local hands us the ip header, not the udp header */
308 if (is_ip4)
309 advance0 = sizeof (ip4_header_t);
310 else
311 advance0 = sizeof (ip6_header_t);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700312
Dave Barachd7cb1b52016-12-09 09:52:16 -0500313 if (PREDICT_FALSE (b0->current_length < advance0 + sizeof (*h0)))
314 {
315 b0->error = node->errors[UDP_ERROR_LENGTH_ERROR];
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800316 next0 = udp_local_next_drop (is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500317 goto trace_x1;
318 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700319
Dave Barachd7cb1b52016-12-09 09:52:16 -0500320 vlib_buffer_advance (b0, advance0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700321
322 h0 = vlib_buffer_get_current (b0);
323
Dave Barachd7cb1b52016-12-09 09:52:16 -0500324 if (PREDICT_TRUE (clib_net_to_host_u16 (h0->length) <=
325 vlib_buffer_length_in_chain (vm, b0)))
326 {
Damjan Marion615fc612017-04-03 14:56:08 +0200327 i0 = sparse_vec_index (is_ip4 ? um->next_by_dst_port4 :
328 um->next_by_dst_port6, h0->dst_port);
329 next0 = vec_elt (is_ip4 ? um->next_by_dst_port4 :
330 um->next_by_dst_port6, i0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700331
Dave Barachd7cb1b52016-12-09 09:52:16 -0500332 if (PREDICT_FALSE (i0 == SPARSE_VEC_INVALID_INDEX))
333 {
334 // move the pointer back so icmp-error can find the
335 // ip packet header
336 vlib_buffer_advance (b0, -(word) advance0);
Chris Luke816f3e12016-06-14 16:24:47 -0400337
Dave Barachd7cb1b52016-12-09 09:52:16 -0500338 if (PREDICT_FALSE (punt_unknown))
339 {
340 b0->error = node->errors[UDP_ERROR_PUNT];
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800341 next0 = udp_local_next_punt (is_ip4);
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800342 }
Dave Barachd7cb1b52016-12-09 09:52:16 -0500343 else if (is_ip4)
344 {
345 icmp4_error_set_vnet_buffer (b0,
346 ICMP4_destination_unreachable,
347 ICMP4_destination_unreachable_port_unreachable,
348 0);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700349 next0 = UDP_LOCAL_NEXT_ICMP4_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500350 n_no_listener++;
351 }
352 else
353 {
354 icmp6_error_set_vnet_buffer (b0,
355 ICMP6_destination_unreachable,
356 ICMP6_destination_unreachable_port_unreachable,
357 0);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700358 next0 = UDP_LOCAL_NEXT_ICMP6_ERROR;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500359 n_no_listener++;
360 }
361 }
362 else
363 {
364 b0->error = node->errors[UDP_ERROR_NONE];
365 // advance to the payload
366 vlib_buffer_advance (b0, sizeof (*h0));
367 }
368 }
369 else
370 {
371 b0->error = node->errors[UDP_ERROR_LENGTH_ERROR];
Vijayabhaskar Katamreddyce074122017-11-15 13:50:26 -0800372 next0 = udp_local_next_drop (is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500373 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700374
Dave Barachd7cb1b52016-12-09 09:52:16 -0500375 trace_x1:
376 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
377 {
Florin Coras3cbc04b2017-10-02 00:18:51 -0700378 udp_local_rx_trace_t *tr = vlib_add_trace (vm, node,
379 b0, sizeof (*tr));
Dave Barachd7cb1b52016-12-09 09:52:16 -0500380 if (b0->error != node->errors[UDP_ERROR_LENGTH_ERROR])
381 {
382 tr->src_port = h0->src_port;
383 tr->dst_port = h0->dst_port;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700384 tr->bound = (next0 != UDP_LOCAL_NEXT_ICMP4_ERROR &&
385 next0 != UDP_LOCAL_NEXT_ICMP6_ERROR);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500386 }
387 }
Chris Luke816f3e12016-06-14 16:24:47 -0400388
Ed Warnickecb9cada2015-12-08 15:45:58 -0700389 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
390 to_next, n_left_to_next,
391 bi0, next0);
392 }
393
394 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
395 }
Dave Barachd7cb1b52016-12-09 09:52:16 -0500396 vlib_error_count (vm, node->node_index, UDP_ERROR_NO_LISTENER,
397 n_no_listener);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700398 return from_frame->n_vectors;
399}
400
Dave Barachd7cb1b52016-12-09 09:52:16 -0500401static char *udp_error_strings[] = {
Ed Warnickecb9cada2015-12-08 15:45:58 -0700402#define udp_error(n,s) s,
403#include "udp_error.def"
404#undef udp_error
405};
406
407static uword
Florin Coras3cbc04b2017-10-02 00:18:51 -0700408udp4_local (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500409 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700410{
Florin Coras3cbc04b2017-10-02 00:18:51 -0700411 return udp46_local_inline (vm, node, from_frame, 1 /* is_ip4 */ );
Ed Warnickecb9cada2015-12-08 15:45:58 -0700412}
413
414static uword
Florin Coras3cbc04b2017-10-02 00:18:51 -0700415udp6_local (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500416 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700417{
Florin Coras3cbc04b2017-10-02 00:18:51 -0700418 return udp46_local_inline (vm, node, from_frame, 0 /* is_ip4 */ );
Ed Warnickecb9cada2015-12-08 15:45:58 -0700419}
420
Dave Barachd7cb1b52016-12-09 09:52:16 -0500421/* *INDENT-OFF* */
Florin Coras3cbc04b2017-10-02 00:18:51 -0700422VLIB_REGISTER_NODE (udp4_local_node) = {
423 .function = udp4_local,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700424 .name = "ip4-udp-lookup",
425 /* Takes a vector of packets. */
426 .vector_size = sizeof (u32),
427
Ed Warnickecb9cada2015-12-08 15:45:58 -0700428 .n_errors = UDP_N_ERROR,
429 .error_strings = udp_error_strings,
430
Florin Coras3cbc04b2017-10-02 00:18:51 -0700431 .n_next_nodes = UDP_LOCAL_N_NEXT,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700432 .next_nodes = {
Florin Coras3cbc04b2017-10-02 00:18:51 -0700433#define _(s,n) [UDP_LOCAL_NEXT_##s] = n,
434 foreach_udp_local_next
Ed Warnickecb9cada2015-12-08 15:45:58 -0700435#undef _
436 },
437
438 .format_buffer = format_udp_header,
439 .format_trace = format_udp_rx_trace,
440 .unformat_buffer = unformat_udp_header,
441};
Dave Barachd7cb1b52016-12-09 09:52:16 -0500442/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700443
Florin Coras3cbc04b2017-10-02 00:18:51 -0700444VLIB_NODE_FUNCTION_MULTIARCH (udp4_local_node, udp4_local);
Damjan Marion1c80e832016-05-11 23:07:18 +0200445
Dave Barachd7cb1b52016-12-09 09:52:16 -0500446/* *INDENT-OFF* */
Florin Coras3cbc04b2017-10-02 00:18:51 -0700447VLIB_REGISTER_NODE (udp6_local_node) = {
448 .function = udp6_local,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700449 .name = "ip6-udp-lookup",
450 /* Takes a vector of packets. */
451 .vector_size = sizeof (u32),
452
Ed Warnickecb9cada2015-12-08 15:45:58 -0700453 .n_errors = UDP_N_ERROR,
454 .error_strings = udp_error_strings,
455
Florin Coras3cbc04b2017-10-02 00:18:51 -0700456 .n_next_nodes = UDP_LOCAL_N_NEXT,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700457 .next_nodes = {
Florin Coras3cbc04b2017-10-02 00:18:51 -0700458#define _(s,n) [UDP_LOCAL_NEXT_##s] = n,
459 foreach_udp_local_next
Ed Warnickecb9cada2015-12-08 15:45:58 -0700460#undef _
461 },
462
463 .format_buffer = format_udp_header,
464 .format_trace = format_udp_rx_trace,
465 .unformat_buffer = unformat_udp_header,
466};
Dave Barachd7cb1b52016-12-09 09:52:16 -0500467/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700468
Florin Coras3cbc04b2017-10-02 00:18:51 -0700469VLIB_NODE_FUNCTION_MULTIARCH (udp6_local_node, udp6_local);
Damjan Marion1c80e832016-05-11 23:07:18 +0200470
Dave Barachd7cb1b52016-12-09 09:52:16 -0500471static void
472add_dst_port (udp_main_t * um,
473 udp_dst_port_t dst_port, char *dst_port_name, u8 is_ip4)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700474{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500475 udp_dst_port_info_t *pi;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700476 u32 i;
477
478 vec_add2 (um->dst_port_infos[is_ip4], pi, 1);
479 i = pi - um->dst_port_infos[is_ip4];
480
481 pi->name = dst_port_name;
482 pi->dst_port = dst_port;
483 pi->next_index = pi->node_index = ~0;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500484
Ed Warnickecb9cada2015-12-08 15:45:58 -0700485 hash_set (um->dst_port_info_by_dst_port[is_ip4], dst_port, i);
486
487 if (pi->name)
488 hash_set_mem (um->dst_port_info_by_name[is_ip4], pi->name, i);
489}
490
491void
492udp_register_dst_port (vlib_main_t * vm,
Dave Barachd7cb1b52016-12-09 09:52:16 -0500493 udp_dst_port_t dst_port, u32 node_index, u8 is_ip4)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700494{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500495 udp_main_t *um = &udp_main;
496 udp_dst_port_info_t *pi;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500497 u16 *n;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700498
499 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500500 clib_error_t *error = vlib_call_init_function (vm, udp_local_init);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700501 if (error)
502 clib_error_report (error);
503 }
504
505 pi = udp_get_dst_port_info (um, dst_port, is_ip4);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500506 if (!pi)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700507 {
508 add_dst_port (um, dst_port, 0, is_ip4);
509 pi = udp_get_dst_port_info (um, dst_port, is_ip4);
510 ASSERT (pi);
511 }
Dave Barachd7cb1b52016-12-09 09:52:16 -0500512
Ed Warnickecb9cada2015-12-08 15:45:58 -0700513 pi->node_index = node_index;
Dave Barachd7cb1b52016-12-09 09:52:16 -0500514 pi->next_index = vlib_node_add_next (vm,
Florin Coras3cbc04b2017-10-02 00:18:51 -0700515 is_ip4 ? udp4_local_node.index
516 : udp6_local_node.index, node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700517
518 /* Setup udp protocol -> next index sparse vector mapping. */
Damjan Marion615fc612017-04-03 14:56:08 +0200519 if (is_ip4)
520 n = sparse_vec_validate (um->next_by_dst_port4,
Damjan Marione9f929b2017-03-16 11:32:09 +0100521 clib_host_to_net_u16 (dst_port));
Damjan Marion615fc612017-04-03 14:56:08 +0200522 else
523 n = sparse_vec_validate (um->next_by_dst_port6,
524 clib_host_to_net_u16 (dst_port));
525
526 n[0] = pi->next_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700527}
528
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800529void
Dave Barach68b0fb02017-02-28 15:15:56 -0500530udp_unregister_dst_port (vlib_main_t * vm, udp_dst_port_t dst_port, u8 is_ip4)
531{
532 udp_main_t *um = &udp_main;
533 udp_dst_port_info_t *pi;
Dave Barach68b0fb02017-02-28 15:15:56 -0500534 u16 *n;
535
536 pi = udp_get_dst_port_info (um, dst_port, is_ip4);
537 /* Not registered? Fagedaboudit */
538 if (!pi)
539 return;
540
541 /* Kill the mapping. Don't bother killing the pi, it may be back. */
Damjan Marion615fc612017-04-03 14:56:08 +0200542 if (is_ip4)
543 n = sparse_vec_validate (um->next_by_dst_port4,
Damjan Marione9f929b2017-03-16 11:32:09 +0100544 clib_host_to_net_u16 (dst_port));
Damjan Marion615fc612017-04-03 14:56:08 +0200545 else
546 n = sparse_vec_validate (um->next_by_dst_port6,
547 clib_host_to_net_u16 (dst_port));
548
549 n[0] = SPARSE_VEC_INVALID_INDEX;
Dave Barach68b0fb02017-02-28 15:15:56 -0500550}
551
552void
Dave Barachd7cb1b52016-12-09 09:52:16 -0500553udp_punt_unknown (vlib_main_t * vm, u8 is_ip4, u8 is_add)
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800554{
Damjan Marion615fc612017-04-03 14:56:08 +0200555 udp_main_t *um = &udp_main;
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800556 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500557 clib_error_t *error = vlib_call_init_function (vm, udp_local_init);
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800558 if (error)
559 clib_error_report (error);
560 }
561
Damjan Marion615fc612017-04-03 14:56:08 +0200562 if (is_ip4)
563 um->punt_unknown4 = is_add;
564 else
565 um->punt_unknown6 = is_add;
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800566}
567
Ed Warnickecb9cada2015-12-08 15:45:58 -0700568/* Parse a UDP header. */
Dave Barachd7cb1b52016-12-09 09:52:16 -0500569uword
570unformat_udp_header (unformat_input_t * input, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700571{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500572 u8 **result = va_arg (*args, u8 **);
573 udp_header_t *udp;
574 __attribute__ ((unused)) int old_length;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700575 u16 src_port, dst_port;
576
577 /* Allocate space for IP header. */
578 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500579 void *p;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700580
581 old_length = vec_len (*result);
582 vec_add2 (*result, p, sizeof (ip4_header_t));
583 udp = p;
584 }
585
Dave Barachb7b92992018-10-17 10:38:51 -0400586 clib_memset (udp, 0, sizeof (udp[0]));
Dave Barachd7cb1b52016-12-09 09:52:16 -0500587 if (unformat (input, "src-port %d dst-port %d", &src_port, &dst_port))
Ed Warnickecb9cada2015-12-08 15:45:58 -0700588 {
589 udp->src_port = clib_host_to_net_u16 (src_port);
590 udp->dst_port = clib_host_to_net_u16 (dst_port);
591 return 1;
592 }
593 return 0;
594}
595
596static void
597udp_setup_node (vlib_main_t * vm, u32 node_index)
598{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500599 vlib_node_t *n = vlib_get_node (vm, node_index);
600 pg_node_t *pn = pg_get_node (node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700601
602 n->format_buffer = format_udp_header;
603 n->unformat_buffer = unformat_udp_header;
604 pn->unformat_edit = unformat_pg_udp_header;
605}
606
Dave Barachd7cb1b52016-12-09 09:52:16 -0500607clib_error_t *
608udp_local_init (vlib_main_t * vm)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700609{
Dave Barachd7cb1b52016-12-09 09:52:16 -0500610 udp_main_t *um = &udp_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700611 int i;
612
613 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500614 clib_error_t *error;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700615 error = vlib_call_init_function (vm, udp_init);
616 if (error)
617 clib_error_report (error);
618 }
619
620
621 for (i = 0; i < 2; i++)
622 {
Dave Barachd7cb1b52016-12-09 09:52:16 -0500623 um->dst_port_info_by_name[i] = hash_create_string (0, sizeof (uword));
624 um->dst_port_info_by_dst_port[i] = hash_create (0, sizeof (uword));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700625 }
626
Florin Coras3cbc04b2017-10-02 00:18:51 -0700627 udp_setup_node (vm, udp4_local_node.index);
628 udp_setup_node (vm, udp6_local_node.index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700629
Damjan Marion615fc612017-04-03 14:56:08 +0200630 um->punt_unknown4 = 0;
631 um->punt_unknown6 = 0;
632
633 um->next_by_dst_port4 = sparse_vec_new
634 ( /* elt bytes */ sizeof (um->next_by_dst_port4[0]),
635 /* bits in index */ BITS (((udp_header_t *) 0)->dst_port));
636
637 um->next_by_dst_port6 = sparse_vec_new
638 ( /* elt bytes */ sizeof (um->next_by_dst_port6[0]),
639 /* bits in index */ BITS (((udp_header_t *) 0)->dst_port));
Alexander Popovsky (apopovsk)740bcdb2016-11-15 15:36:23 -0800640
Ed Warnickecb9cada2015-12-08 15:45:58 -0700641#define _(n,s) add_dst_port (um, UDP_DST_PORT_##s, #s, 1 /* is_ip4 */);
642 foreach_udp4_dst_port
643#undef _
Ed Warnickecb9cada2015-12-08 15:45:58 -0700644#define _(n,s) add_dst_port (um, UDP_DST_PORT_##s, #s, 0 /* is_ip4 */);
Damjan Marione9f929b2017-03-16 11:32:09 +0100645 foreach_udp6_dst_port
Ed Warnickecb9cada2015-12-08 15:45:58 -0700646#undef _
Florin Coras3cbc04b2017-10-02 00:18:51 -0700647 ip4_register_protocol (IP_PROTOCOL_UDP, udp4_local_node.index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700648 /* Note: ip6 differs from ip4, UDP is hotwired to ip6-udp-lookup */
649 return 0;
650}
651
652VLIB_INIT_FUNCTION (udp_local_init);
Dave Barachd7cb1b52016-12-09 09:52:16 -0500653
654/*
655 * fd.io coding-style-patch-verification: ON
656 *
657 * Local Variables:
658 * eval: (c-set-style "gnu")
659 * End:
660 */