dispatch-trace: move dispatch trace pcap code to plugin
[vpp.git] / src / vppinfra / pcap_funcs.h
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
16 #ifndef included_vppinfra_pcap_funcs_h
17 #define included_vppinfra_pcap_funcs_h
18
19 /** Write out data to output file. */
20 clib_error_t *pcap_close (pcap_main_t * pm);
21 clib_error_t *pcap_write (pcap_main_t * pm);
22
23 /** Read data from file. */
24 clib_error_t *pcap_read (pcap_main_t * pm);
25
26 /** Close the file created by pcap_write function. */
27 clib_error_t *pcap_close (pcap_main_t * pm);
28
29 /**
30  * @brief Add packet
31  *
32  * @param *pm - pcap_main_t
33  * @param time_now - f64
34  * @param n_bytes_in_trace - u32
35  * @param n_bytes_in_packet - u32
36  *
37  * @return Packet Data
38  *
39  */
40 static inline void *
41 pcap_add_packet (pcap_main_t * pm,
42                  f64 time_now, u32 n_bytes_in_trace, u32 n_bytes_in_packet)
43 {
44   pcap_packet_header_t *h;
45   u8 *d;
46
47   vec_add2 (pm->pcap_data, d, sizeof (h[0]) + n_bytes_in_trace);
48   h = (void *) (d);
49   h->time_in_sec = time_now;
50   h->time_in_usec = 1e6 * (time_now - h->time_in_sec);
51   h->n_packet_bytes_stored_in_file = n_bytes_in_trace;
52   h->n_bytes_in_packet = n_bytes_in_packet;
53   pm->n_packets_captured++;
54   return h->data;
55 }
56
57 #endif /* included_vppinfra_pcap_funcs_h */
58
59 /*
60  * fd.io coding-style-patch-verification: ON
61  *
62  * Local Variables:
63  * eval: (c-set-style "gnu")
64  * End:
65  */