usrp2::ethernet Class Reference

Read and write ethernet frames. More...

#include <ethernet.h>

List of all members.

Public Member Functions
	ethernet ()
	~ethernet ()
bool	open (std::string ifname, int protocol)
bool	close ()
bool	attach_pktfilter (pktfilter *pf)
	attach packet filter to socket to restrict which packets read sees.
const uint8_t *	mac () const
	return 6 byte string containing our MAC address
int	fd () const
	Return file descriptor associated with socket.
int	read_packet (void *buf, int buflen)
	Read packet from interface.
int	read_packet_dont_block (void *buf, int buflen)
	Read packet from interface, but don't block waiting.
int	write_packet (const void *buf, int buflen)
int	write_packetv (const eth_iovec *iov, size_t iovlen)
Static Public Attributes
static const int	MAX_PKTLEN = 1512
static const int	MIN_PKTLEN = 64

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Detailed Description

Read and write ethernet frames.

This provides a low level interface to hardware that communicates via raw (non-IP) ethernet frames.

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Constructor & Destructor Documentation

usrp2::ethernet::ethernet

(

)

usrp2::ethernet::~ethernet

(

)

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Member Function Documentation

bool usrp2::ethernet::attach_pktfilter

(

pktfilter *

pf

)

attach packet filter to socket to restrict which packets read sees.

Parameters:

pf

the packet filter

bool usrp2::ethernet::close

(

)

int usrp2::ethernet::fd

(

)

const [inline]

Return file descriptor associated with socket.

const uint8_t* usrp2::ethernet::mac

(

)

const [inline]

return 6 byte string containing our MAC address

bool usrp2::ethernet::open	(	std::string	ifname,
		int	protocol
	)

Parameters:

	ifname	ethernet interface name, e.g., "eth0"
	protocol	is the ethertype protocol number in network order. Use 0 to receive all protocols.

int usrp2::ethernet::read_packet	(	void *	buf,
		int	buflen
	)

Read packet from interface.

Parameters:

	buf	where to put the packet
	buflen	maximum length of packet in bytes (should be >= 1528)

Returns:

number of bytes read or -1 if trouble.

Returned packet includes 14-byte ethhdr

int usrp2::ethernet::read_packet_dont_block	(	void *	buf,
		int	buflen
	)

Read packet from interface, but don't block waiting.

Parameters:

	buf	where to put the packet
	buflen	maximum length of packet in bytes (should be >= 1528)

Returns:

number of bytes read, -1 if trouble or 0 if nothing available.

Returned packet includes 14-byte ethhdr

int usrp2::ethernet::write_packet	(	const void *	buf,
		int	buflen
	)

int usrp2::ethernet::write_packetv	(	const eth_iovec *	iov,
		size_t	iovlen
	)

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Member Data Documentation

const int usrp2::ethernet::MAX_PKTLEN = 1512 [static]

const int usrp2::ethernet::MIN_PKTLEN = 64 [static]

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The documentation for this class was generated from the following file:

• ethernet.h