FD.io VPP  v21.06-1-gbb7418cf9
Vector Packet Processing
pcap_funcs.h
Go to the documentation of this file.
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. */
22 
23 /** Read data from file. */
25 
26 /** Close the file created by pcap_write function. */
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 *
42  f64 time_now, u32 n_bytes_in_trace, u32 n_bytes_in_packet)
43 {
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  */
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:645
unsigned char u8
Definition: types.h:56
double f64
Definition: types.h:142
unsigned int u32
Definition: types.h:88
PCAP main state data structure.
Definition: pcap.h:156
foreach_pcap_packet_header u8 data[0]
Packet data follows.
Definition: pcap.h:150
clib_error_t * pcap_read(pcap_main_t *pm)
Read data from file.
Definition: pcap.c:176
u8 * pcap_data
Vector of pcap data.
Definition: pcap.h:184
static void * pcap_add_packet(pcap_main_t *pm, f64 time_now, u32 n_bytes_in_trace, u32 n_bytes_in_packet)
Add packet.
Definition: pcap_funcs.h:41
clib_error_t * pcap_close(pcap_main_t *pm)
Write out data to output file.
Definition: pcap.c:74
Packet header.
Definition: pcap.h:144
clib_error_t * pcap_write(pcap_main_t *pm)
Write PCAP file.
Definition: pcap.c:89
u32 n_packets_captured
Number of packets currently captured.
Definition: pcap.h:171