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 #ifndef __included_vnet_flow_report_h__
16 #define __included_vnet_flow_report_h__
18 #include <vlib/vlib.h>
19 #include <vnet/vnet.h>
20 #include <vnet/ethernet/ethernet.h>
21 #include <vnet/ethernet/packet.h>
22 #include <vnet/ip/ip_packet.h>
23 #include <vnet/ip/ip_types.h>
24 #include <vnet/ip/ip4_packet.h>
25 #include <vnet/ip/ip6_packet.h>
26 #include <vnet/udp/udp_packet.h>
28 #include <vppinfra/error.h>
29 #include <vppinfra/hash.h>
30 #include <vppinfra/cache.h>
32 #include <vnet/ipfix-export/ipfix_packet.h>
34 /* ipfix field definitions for a particular report */
39 } ipfix_report_element_t;
41 /* Used to build the rewrite */
46 ipfix_template_packet_t ipfix;
47 } ip4_ipfix_template_packet_t;
49 /* Used to build the rewrite */
54 ipfix_template_packet_t ipfix;
55 } ip6_ipfix_template_packet_t;
57 struct flow_report_main;
59 struct ipfix_exporter;
61 typedef vlib_frame_t *(vnet_flow_data_callback_t) (
62 struct flow_report_main *frm, struct ipfix_exporter *exp,
63 struct flow_report *, vlib_frame_t *, u32 *, u32);
65 typedef u8 *(vnet_flow_rewrite_callback_t) (struct ipfix_exporter *exp,
67 u16, ipfix_report_element_t *elts,
68 u32 n_elts, u32 *stream_index);
70 u8 *vnet_flow_rewrite_generic_callback (struct ipfix_exporter *exp,
71 struct flow_report *, u16,
72 ipfix_report_element_t *elts,
73 u32 n_elts, u32 *stream_index);
82 * A stream represents an IPFIX session to a destination. We can have
83 * multiple streams to the same destination, but each one has its own
84 * domain and source port. A stream has a sequence number for that
85 * session. A stream may contain multiple templates (i.e multiple for
86 * reports) and each stream also has its own template space.
88 * A stream has per thread state so that data packets can be built
89 * and send on multiple threads at the same time.
98 } flow_report_stream_t;
101 * For each flow_report we want to be able to build buffers/frames per thread.
105 vlib_buffer_t *buffer;
107 u16 next_data_offset;
109 * We need this per stream as the IPFIX sequence number is the count of
110 * data record sent, not the count of packets with data records sent.
111 * See RFC 7011, Sec 3.1
114 } flow_report_per_thread_t;
117 * A flow report represents a group of fields that are to be exported.
118 * Each flow_report has an associated template that is generated when
119 * the flow_report is added. Each flow_report is associated with a
120 * stream, and multiple flow_reports can use the same stream. When
121 * adding a flow_report the keys for the stream are the domain_id
122 * and the source_port.
124 typedef struct flow_report
126 /* ipfix rewrite, set by callback */
129 int data_record_size;
130 flow_report_per_thread_t *per_thread_data;
132 f64 last_template_sent;
135 /* Bitmap of fields to send */
136 uword *fields_to_send;
141 /* build-the-template-packet rewrite callback */
142 vnet_flow_rewrite_callback_t *rewrite_callback;
143 ipfix_report_element_t *report_elements;
144 u32 n_report_elements;
147 /* Send-flow-data callback */
148 vnet_flow_data_callback_t *flow_data_callback;
152 * The maximum number of ipfix exporters we can have at once
154 #define IPFIX_EXPORTERS_MAX 5
157 * We support multiple exporters. Each one has its own configured
158 * destination, and its own set of reports and streams.
160 typedef struct ipfix_exporter
162 flow_report_t *reports;
163 flow_report_stream_t *streams;
165 /* ipfix collector ip address, port, our ip address, fib index */
166 ip_address_t ipfix_collector;
168 ip_address_t src_address;
174 /* time interval in seconds after which to resend templates */
175 u32 template_interval;
177 /* UDP checksum calculation enable flag */
181 * The amount of data needed for all the headers, prior to the first
182 * flowset (template or data or ...) This is mostly dependent on the
183 * L3 and L4 protocols in use.
185 u32 all_headers_size;
188 typedef struct flow_report_main
191 * A pool of the exporters. Entry 0 is always there for backwards
192 * compatability reasons. Entries 1 and above have to be created by
195 ipfix_exporter_t *exporters;
197 /* time scale transform. Joy. */
201 /* convenience variables */
202 vlib_main_t *vlib_main;
203 vnet_main_t *vnet_main;
206 } flow_report_main_t;
208 extern flow_report_main_t flow_report_main;
210 extern vlib_node_registration_t flow_report_process_node;
214 vnet_flow_data_callback_t *flow_data_callback;
215 vnet_flow_rewrite_callback_t *rewrite_callback;
216 ipfix_report_element_t *report_elements;
217 u32 n_report_elements;
224 * When adding a flow report, the index of the flow report is stored
227 u32 flow_report_index;
228 } vnet_flow_report_add_del_args_t;
230 int vnet_flow_report_add_del (ipfix_exporter_t *exp,
231 vnet_flow_report_add_del_args_t *a,
234 clib_error_t *flow_report_add_del_error_to_clib_error (int error);
236 void vnet_flow_reports_reset (ipfix_exporter_t *exp);
238 void vnet_stream_reset (ipfix_exporter_t *exp, u32 stream_index);
240 int vnet_stream_change (ipfix_exporter_t *exp, u32 old_domain_id,
241 u16 old_src_port, u32 new_domain_id, u16 new_src_port);
244 * Search all the exporters for one that has a matching destination address.
247 vnet_ipfix_exporter_lookup (const ip_address_t *ipfix_collector);
250 * Get the currently in use buffer for the given stream on the given core.
251 * If there is no current buffer then allocate a new one and return that.
252 * This is the buffer that data records should be written into. The offset
253 * currently in use is stored in the per-thread data for the stream and
254 * should be updated as new records are written in.
256 vlib_buffer_t *vnet_ipfix_exp_get_buffer (vlib_main_t *vm,
257 ipfix_exporter_t *exp,
258 flow_report_t *fr, u32 thread_index);
261 * Send the provided buffer. At this stage the buffer should be populated
262 * with data records, with the offset in use stored in the stream per thread
263 * data. This func will fix up all the headers and then send the buffer.
265 void vnet_ipfix_exp_send_buffer (vlib_main_t *vm, ipfix_exporter_t *exp,
267 flow_report_stream_t *stream,
268 u32 thread_index, vlib_buffer_t *b0);
270 #endif /* __included_vnet_flow_report_h__ */
273 * fd.io coding-style-patch-verification: ON
276 * eval: (c-set-style "gnu")