phy::empty_header< Bottom > Struct Template Reference

#include <wipal/phy/empty.hh>

Inheritance diagram for phy::empty_header< Bottom >:

phy::header< Bottom > tool::static_base< Bottom >

List of all members.


Detailed Description

template<class Bottom = tool::bottom>
struct phy::empty_header< Bottom >

Empty PHY header (i.e.

of length 0).

Use when packets inside your trace contains raw IEEE 802.11 frames.

Static hierarchies related types and methods.

typedef HIDDEN exact_type
typedef HIDDEN time_type
size_t len_impl (size_t, bool) const
time_type time_get_impl (bool) const
void time_set_impl (const time_type &, bool)
template<class D1, class D2>
static bool eq_time (const pcapxx::frame_descriptor< D1 > &lhs, const pcapxx::frame_descriptor< D2 > &rhs, tool::endian::endianness phy_end, unsigned prec)

Public Member Functions

size_t len (size_t caplen, bool swapped) const
const void * decapsulate (size_t caplen, bool swapped) const
time_type time_get (bool swapped) const
void time_set (const time_type &time, bool swapped)
Downcast methods
const exact_typeexact () const
exact_typeexact ()
const exact_typeexact_ptr () const
exact_typeexact_ptr ()

Static Public Member Functions

template<class D1, class D2>
static bool eq_80211 (const pcapxx::frame_descriptor< D1 > &lhs, const pcapxx::frame_descriptor< D2 > &rhs, tool::endian::endianness phy_end=tool::endian::guess)
template<class D1, class D2>
static bool eq_time_and_80211 (const pcapxx::frame_descriptor< D1 > &lhs, const pcapxx::frame_descriptor< D2 > &rhs, tool::endian::endianness phy_end=tool::endian::guess, unsigned precision=phy::eq_time_default_precision)


Member Typedef Documentation

template<class Bottom = tool::bottom>
typedef HIDDEN phy::empty_header< Bottom >::exact_type

Exact type for this template instanciation.

See also:
static_base

Reimplemented from phy::header< Bottom >.


Member Function Documentation

template<class B>
size_t phy::header< B >::len ( size_t  caplen,
bool  swapped 
) const [inline, inherited]

Get the PHY header length.

Never override this method. Define len_impl() in subclasses instead.

template<class B>
const void * phy::header< B >::decapsulate ( size_t  caplen,
bool  swapped 
) const [inline, inherited]

Get the embedded IEEE 802.11 frame.

Return 0 if len() > caplen.

This method relies on len(). You should not need to override it if your subclasses define a proper len_impl().

template<class B>
header< B >::time_type phy::header< B >::time_get ( bool  swapped  )  const [inline, inherited]

Extract timing information from the PHY header.

Never override this method. Define time_get_impl() in subclasses instead.

template<class B>
void phy::header< B >::time_set ( const time_type &  time,
bool  swapped 
) [inline, inherited]

Set the PHY header's timing information.

Never override this method. Define time_set_impl() in subclasses instead.

template<class B>
template<class D1, class D2>
bool phy::header< B >::eq_80211 ( const pcapxx::frame_descriptor< D1 > &  lhs,
const pcapxx::frame_descriptor< D2 > &  rhs,
tool::endian::endianness  phy_end = tool::endian::guess 
) [inline, static, inherited]

Compare the IEEE 802.11 bytes beyond the PHY header.

Return whether the two IEEE 802.11 frames embedded inside the PHY headers are equals. This function does not compare the PHY headers.

In case there is not enough bytes to decide whether frames are equal (caplen < sizeof prism::header), consider they are not. This is a conservative approach: when merging two traces, this will lead to both frames having their entry in the merged trace.

This method relies on decapsulate(). You should not need to override it if your subclasses define a proper decapsulate_impl().

template<class B>
template<class D1, class D2>
bool phy::header< B >::eq_time_and_80211 ( const pcapxx::frame_descriptor< D1 > &  lhs,
const pcapxx::frame_descriptor< D2 > &  rhs,
tool::endian::endianness  phy_end = tool::endian::guess,
unsigned  precision = phy::eq_time_default_precision 
) [inline, static, inherited]

Compare the IEEE 802.11 bytes beyond PHY headers, but also check timestamps.

Return whether the two IEEE 802.11 frames embedded inside the PHY headers are equals. Also compare the timestamps of PHY headers if available (or the PCAP timestamps else). When the time difference between each header's field is less than precision, then consider the field equals.

In case there is not enough bytes to decide whether frames are equal (caplen < sizeof prism::header), consider they are not. This is a conservative approach: when merging two traces, this will lead to both frames having their entry in the merged trace.

This method relies on eq_time(). You should not need to override it if your subclasses define a proper eq_time().

template<class Bottom>
const static_base< Bottom >::exact_type & tool::static_base< Bottom >::exact (  )  const [inline, inherited]

Safely downcast to the exact type as a const reference.

template<class Bottom>
static_base< Bottom >::exact_type & tool::static_base< Bottom >::exact (  )  [inline, inherited]

Safely downcast to the exact type as a non-const reference.

template<class Bottom>
const static_base< Bottom >::exact_type * tool::static_base< Bottom >::exact_ptr (  )  const [inline, inherited]

Safely downcast to the exact type as a const pointer.

template<class Bottom>
static_base< Bottom >::exact_type * tool::static_base< Bottom >::exact_ptr (  )  [inline, inherited]

Safely downcast to the exact type as a non-const pointer.


The documentation for this struct was generated from the following files:

Generated on Tue Dec 2 11:12:17 2008 for wipal by  doxygen 1.5.6