Raw Packets

Send and receive raw packets. More...

Functions
devcall	rawClose (device *devptr)
devcall	rawControl (device *devptr, int func, long arg1, long arg2)
struct raw *	rawDemux (struct netaddr *src, struct netaddr *dst, ushort proto)
devcall	rawInit (device *devptr)
devcall	rawOpen (device *devptr, va_list ap)
devcall	rawRead (device *devptr, void *buf, uint len)
syscall	rawRecv (struct packet *pkt, struct netaddr *src, struct netaddr *dst, ushort proto)
syscall	rawSend (struct raw *rawptr, void *buf, uint len)
devcall	rawWrite (device *devptr, void *buf, uint len)

Detailed Description

Send and receive raw packets.

Function Documentation

devcall rawClose

(

device *

devptr

)

Close a raw socket device.

Parameters

devptr

RAW device table entry

Returns

OK if raw socket is closed properly, otherwise SYSERR

devcall rawControl	(	device *	devptr,
		int	func,
		long	arg1,
		long	arg2
	)

Control function for raw sockets.

Parameters

devptr	RAW device table entry
func	control function to execute
arg1	first argument for the control function
arg2	second argument for the control function

Returns

the result of the control function

struct raw* rawDemux	(	struct netaddr *	src,
		struct netaddr *	dst,
		ushort	proto
	)

Locate the raw socket for a packet

Parameters

src	source IP address of the packet
dst	destination IP address of the packet
proto	protocol of the packet

Returns

most completely matched socket, NULL if no match

devcall rawInit

(

device *

devptr

)

Initialize raw socket structures.

Parameters

devptr

RAW device table entry

Returns

OK if device is initialized

devcall rawOpen	(	device *	devptr,
		va_list	ap
	)

Open a raw socket.

Parameters

devptr	RAW device table entry
ap	2nd argument is the local IP address 3rd argument is the remote IP address 4th argument is the IP protocol

Returns

OK if raw socket is opened properly, otherwise SYSERR

devcall rawRead	(	device *	devptr,
		void *	buf,
		uint	len
	)

Read a packet from a raw socket.

Parameters

devptr	pointer to RAW device
buf	buffer for read packet
len	size of the buffer

Returns

number of octets read, SYSERR if error occurred

syscall rawRecv	(	struct packet *	pkt,
		struct netaddr *	src,
		struct netaddr *	dst,
		ushort	proto
	)

Process an incoming protocol other than UDP or TCP.

Parameters

pkt	pointer to the incoming packet

Returns

OK if packet was processed succesfully, otherwise SYSERR

syscall rawSend	(	struct raw *	rawptr,
		void *	buf,
		uint	len
	)

Send an outgoing packet of protocol other than UDP or TCP.

Parameters

rawptr	pointer to the raw socket control block
buf	buffer to semd
len	size of the buffer

Returns

OK if packet was sent succesfully, otherwise SYSERR

devcall rawWrite	(	device *	devptr,
		void *	buf,
		uint	len
	)

Write a packet to a raw socket.

Parameters

devptr	pointer to RAW device
buf	buffer to write
len	size of the buffer

Returns

number of octets written, SYSERR if error occurred