mpcap.c File Reference

mapped pcap file support More...

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Functions
__clib_export clib_error_t *	mpcap_close (mpcap_main_t *pm)
	Close a mapped pcap file. More...
__clib_export clib_error_t *	mpcap_init (mpcap_main_t *pm)
	Initialize a mapped pcap file. More...
clib_error_t *	mpcap_map (mpcap_main_t *pm)
	mmap a mapped pcap file, e.g. More...

Detailed Description

mapped pcap file support

Usage:

#include <vnet/unix/mpcap.h>

static mpcap_main_t mpcap = {
 .file_name = "/tmp/ip4",
 .n_packets_to_capture = 2,
 .packet_type = MPCAP_PACKET_TYPE_ip,
};

To add a buffer:

mpcap_add_buffer (&mpcap, vm, pi0, 128);

File will be written after n_packets_to_capture or call to mpcap_close

Definition in file mpcap.c.

Function Documentation

mpcap_close()

__clib_export clib_error_t* mpcap_close

(

mpcap_main_t *

pm

)

Close a mapped pcap file.

Flush / unmap a mpcap file.

Parameters

mpcap_main_t

* pm

Returns

rc - clib_error_t

Definition at line 56 of file mpcap.c.

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mpcap_init()

__clib_export clib_error_t* mpcap_init

(

mpcap_main_t *

pm

)

Initialize a mapped pcap file.

initialize a mpcap file (for writing)

Parameters

mpcap_main_t

* pm

Returns

rc - clib_error_t

Definition at line 85 of file mpcap.c.

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mpcap_map()

clib_error_t* mpcap_map

(

mpcap_main_t *

pm

)

mmap a mapped pcap file, e.g.

mmap a mpcap data file.

to read from another process

Parameters

pcap_main_t

*pm

Returns

rc - clib_error_t

Definition at line 164 of file mpcap.c.

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