2 * Copyright (c) 2017 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 <vlib/vlib.h>
17 #include <vnet/vnet.h>
18 #include <vppinfra/error.h>
19 #include <ioam/ipfixcollector/ipfixcollector.h>
20 #include <vnet/ipfix-export/ipfix_packet.h>
22 #define foreach_ipfix_collector_error \
23 _(PROCESSED, "Number of IP-Fix packets processed") \
24 _(NO_LISTENER, "Number of IP-Fix packets with no listener")
28 #define _(sym,str) IPFIX_COLLECTOR_ERROR_##sym,
29 foreach_ipfix_collector_error
31 IPFIX_COLLECTOR_N_ERROR,
34 static char *ipfix_collector_error_strings[] = {
35 #define _(sym,string) string,
36 foreach_ipfix_collector_error
42 IPFIX_COLLECTOR_NEXT_DROP,
43 IPFIX_COLLECTOR_N_NEXT,
44 } ipfix_collector_next_t;
51 } ipfix_collector_trace_t;
53 vlib_node_registration_t ipfix_collector_node;
55 /* packet trace format function */
57 format_ipfix_collector_trace (u8 * s, va_list * args)
59 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
60 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
61 ipfix_collector_trace_t *t = va_arg (*args, ipfix_collector_trace_t *);
64 "IPFIX_COLLECTOR: set_id %u, next_node %u", t->set_id,
70 * @brief Node to receive IP-Fix packets.
71 * @node ipfix-collector
73 * This function receives IP-FIX packets and forwards them to other graph nodes
74 * based on SetID field in IP-FIX.
76 * @param vm vlib_main_t corresponding to the current thread.
77 * @param node vlib_node_runtime_t data for this node.
78 * @param frame vlib_frame_t whose contents should be dispatched.
80 * @par Graph mechanics: buffer, next index usage
83 * - <code>vlib_buffer_get_current(p0)</code>
84 * - Parses IP-Fix packet to extract SetId which will be used to decide
85 * next node where packets should be enqueued.
87 * <em>Next Index:</em>
88 * - Dispatches the packet to other VPP graph nodes based on their registartion
89 * for the IP-Fix SetId using API ipfix_collector_reg_setid().
92 ipfix_collector_node_fn (vlib_main_t * vm,
93 vlib_node_runtime_t * node,
94 vlib_frame_t * from_frame)
96 u32 n_left_from, next_index, *from, *to_next;
97 word n_no_listener = 0;
100 from = vlib_frame_vector_args (from_frame);
101 n_left_from = from_frame->n_vectors;
103 next_index = node->cached_next_index;
105 while (n_left_from > 0)
109 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
111 while (n_left_from >= 4 && n_left_to_next >= 2)
114 vlib_buffer_t *b0, *b1;
116 ipfix_message_header_t *ipfix0, *ipfix1;
117 ipfix_set_header_t *set0, *set1;
118 u16 set_id0, set_id1;
119 ipfix_client *client0, *client1;
121 /* Prefetch next iteration. */
123 vlib_buffer_t *p2, *p3;
125 p2 = vlib_get_buffer (vm, from[2]);
126 p3 = vlib_get_buffer (vm, from[3]);
128 vlib_prefetch_buffer_header (p2, LOAD);
129 vlib_prefetch_buffer_header (p3, LOAD);
131 CLIB_PREFETCH (p2->data,
132 (sizeof (ipfix_message_header_t) +
133 sizeof (ipfix_set_header_t)), LOAD);
134 CLIB_PREFETCH (p3->data,
135 (sizeof (ipfix_message_header_t) +
136 sizeof (ipfix_set_header_t)), LOAD);
148 b0 = vlib_get_buffer (vm, bi0);
149 b1 = vlib_get_buffer (vm, bi1);
151 ipfix0 = vlib_buffer_get_current (b0);
152 ipfix1 = vlib_buffer_get_current (b1);
154 set0 = (ipfix_set_header_t *) (ipfix0 + 1);
155 set1 = (ipfix_set_header_t *) (ipfix1 + 1);
157 set_id0 = (u16) (clib_net_to_host_u32 (set0->set_id_length) >> 16);
158 set_id1 = (u16) (clib_net_to_host_u32 (set1->set_id_length) >> 16);
160 client0 = ipfix_collector_get_client (set_id0);
161 client1 = ipfix_collector_get_client (set_id1);
163 if (PREDICT_TRUE (NULL != client0))
165 next0 = client0->client_next_node;
170 next0 = IPFIX_COLLECTOR_NEXT_DROP;
174 if (PREDICT_TRUE (NULL != client1))
176 next1 = client1->client_next_node;
181 next1 = IPFIX_COLLECTOR_NEXT_DROP;
185 vlib_buffer_advance (b0,
186 (sizeof (ipfix_message_header_t)
187 + sizeof (ipfix_set_header_t)));
188 vlib_buffer_advance (b1,
189 (sizeof (ipfix_message_header_t)
190 + sizeof (ipfix_set_header_t)));
192 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
194 ipfix_collector_trace_t *tr = vlib_add_trace (vm, node,
196 tr->next_node = (client0 ? client0->client_node : 0xFFFFFFFF);
197 tr->set_id = set_id0;
199 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
201 ipfix_collector_trace_t *tr = vlib_add_trace (vm, node,
203 tr->next_node = (client1 ? client1->client_node : 0xFFFFFFFF);
204 tr->set_id = set_id1;
207 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
208 to_next, n_left_to_next,
209 bi0, bi1, next0, next1);
212 while (n_left_from > 0 && n_left_to_next > 0)
217 ipfix_message_header_t *ipfix0;
218 ipfix_set_header_t *set0;
220 ipfix_client *client0;
229 b0 = vlib_get_buffer (vm, bi0);
230 ipfix0 = vlib_buffer_get_current (b0);
232 set0 = (ipfix_set_header_t *) (ipfix0 + 1);
234 set_id0 = (u16) (clib_net_to_host_u32 (set0->set_id_length) >> 16);
236 client0 = ipfix_collector_get_client (set_id0);
238 if (PREDICT_TRUE (NULL != client0))
240 next0 = client0->client_next_node;
245 next0 = IPFIX_COLLECTOR_NEXT_DROP;
249 vlib_buffer_advance (b0,
250 (sizeof (ipfix_message_header_t)
251 + sizeof (ipfix_set_header_t)));
252 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
254 ipfix_collector_trace_t *tr = vlib_add_trace (vm, node,
256 tr->next_node = (client0 ? client0->client_node : 0xFFFFFFFF);
257 tr->set_id = set_id0;
260 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
261 to_next, n_left_to_next,
265 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
267 vlib_error_count (vm, node->node_index,
268 IPFIX_COLLECTOR_ERROR_NO_LISTENER, n_no_listener);
269 vlib_error_count (vm, node->node_index,
270 IPFIX_COLLECTOR_ERROR_PROCESSED, n_listener);
271 return from_frame->n_vectors;
275 VLIB_REGISTER_NODE (ipfix_collector_node) = {
276 .function = ipfix_collector_node_fn,
277 .name = "ipfix-collector",
278 .vector_size = sizeof (u32),
279 .format_trace = format_ipfix_collector_trace,
280 .type = VLIB_NODE_TYPE_INTERNAL,
282 .n_errors = ARRAY_LEN(ipfix_collector_error_strings),
283 .error_strings = ipfix_collector_error_strings,
285 .n_next_nodes = IPFIX_COLLECTOR_N_NEXT,
287 /* edit / add dispositions here */
289 [IPFIX_COLLECTOR_NEXT_DROP] = "error-drop",
295 * fd.io coding-style-patch-verification: ON
298 * eval: (c-set-style "gnu")