pcap.h File Reference

PCAP utility definitions. More...

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Data Structures
struct	pcap_file_header_t
	File header struct. More...
struct	pcap_packet_header_t
	Packet header. More...
struct	pcap_main_t
	PCAP main state data structure. More...

Macros
#define	foreach_vnet_pcap_packet_type
	Packet types supported by PCAP. More...
#define	foreach_pcap_file_header
#define	foreach_pcap_packet_header
#define	PCAP_MAIN_INIT_DONE   (1 << 0)

Enumerations
enum	pcap_packet_type_t { foreach_vnet_pcap_packet_type }

Functions
clib_error_t *	pcap_write (pcap_main_t *pm)
	Write out data to output file. More...
clib_error_t *	pcap_read (pcap_main_t *pm)
	Read data from file. More...
static void *	pcap_add_packet (pcap_main_t *pm, f64 time_now, u32 n_bytes_in_trace, u32 n_bytes_in_packet)
	Add packet. More...
static void	pcap_add_buffer (pcap_main_t *pm, vlib_main_t *vm, u32 buffer_index, u32 n_bytes_in_trace)
	Add buffer (vlib_buffer_t) to the trace. More...

Detailed Description

PCAP utility definitions.

Definition in file pcap.h.

Macro Definition Documentation

#define foreach_pcap_file_header

Value:

/** 0xa1b2c3d4 host byte order.                 \
     0xd4c3b2a1 => need to byte swap everything. */     \
  _ (u32, magic)                                        \
                                                        \
  /** Currently major 2 minor 4. */                     \
  _ (u16, major_version)                                \
  _ (u16, minor_version)                                \
                                                        \
  /** 0 for GMT. */                                     \
  _ (u32, time_zone)                                    \
                                                        \
  /** Accuracy of timestamps.  Typically set to 0. */   \
  _ (u32, sigfigs)                                      \
                                                        \
  /** Size of largest packet in file. */                \
  _ (u32, max_packet_size_in_bytes)                     \
                                                        \
  /** One of vnet_pcap_packet_type_t. */                \
  _ (u32, packet_type)

Definition at line 71 of file pcap.h.

#define foreach_pcap_packet_header

Value:

/** Time stamp in seconds  */                                         \
  _ (u32, time_in_sec)                                                  \
  /** Time stamp in microseconds. */                                    \
  _ (u32, time_in_usec)                                                 \
                                                                        \
  /** Number of bytes stored in file. */                                \
  _ (u32, n_packet_bytes_stored_in_file)                                \
  /** Number of bytes in actual packet. */                              \
  _ (u32, n_bytes_in_packet)

Definition at line 100 of file pcap.h.

#define foreach_vnet_pcap_packet_type

Value:

_ (null, 0)                                     \
  _ (ethernet, 1)                               \
  _ (ppp, 9)                                    \
  _ (ip, 12)                                    \
  _ (hdlc, 104)

Packet types supported by PCAP.

null 0 ethernet 1 ppp 9 ip 12 hdlc 104

Definition at line 57 of file pcap.h.

#define PCAP_MAIN_INIT_DONE   (1 << 0)

Definition at line 140 of file pcap.h.

Enumeration Type Documentation

enum pcap_packet_type_t

Enumerator
foreach_vnet_pcap_packet_type

Definition at line 64 of file pcap.h.

Function Documentation

static void pcap_add_buffer ( pcap_main_t *  pm, vlib_main_t *  vm, u32  buffer_index, u32  n_bytes_in_trace  )

inlinestatic

Add buffer (vlib_buffer_t) to the trace.

Parameters

*pm	- pcap_main_t
*vm	- vlib_main_t
buffer_index	- u32
n_bytes_in_trace	- u32

Definition at line 205 of file pcap.h.

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static void* pcap_add_packet ( pcap_main_t *  pm, f64  time_now, u32  n_bytes_in_trace, u32  n_bytes_in_packet  )

inlinestatic

Add packet.

Parameters

*pm	- pcap_main_t
time_now	- f64
n_bytes_in_trace	- u32
n_bytes_in_packet	- u32

Returns

Packet Data

Definition at line 179 of file pcap.h.

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clib_error_t* pcap_read

(

pcap_main_t *

pm

)

Read data from file.

Read data from file.

Returns

rc - clib_error_t

Definition at line 178 of file pcap.c.

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clib_error_t* pcap_write

(

pcap_main_t *

pm

)

Write out data to output file.

Write out data to output file.

Returns

rc - clib_error_t

Definition at line 89 of file pcap.c.

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