NetworkStack Class Reference

#include <NetworkStack.h>

Collaboration diagram for NetworkStack:

Classes
class	DeviceLease
struct	DeviceRegistration

Public Member Functions
void	receive (size_t nBytes, uintptr_t packet, Network *pCard, uint32_t offset)
void	receive (size_t nBytes, uintptr_t packet, const DeviceLease &device, uint32_t offset)
void	registerDevice (Network *pDevice)
MUST_USE_RESULT bool	acquireDevice (size_t n, DeviceLease &lease)
MUST_USE_RESULT bool	acquireDevice (Network *pDevice, DeviceLease &lease)
void	deRegisterDevice (Network *pDevice)
MemoryPool &	getMemPool ()

Static Public Member Functions
static NetworkStack &	instance ()
static NetworkStack *	instanceIfAvailable ()

Private Attributes
Vector< Network * >	m_Children
MemoryPool	m_MemPool
Mutex	m_Lock
size_t	m_NextInterfaceNumber
Tree< Network *, DeviceRegistration * >	m_Registrations

Static Private Attributes
static NetworkStack *	stack = 0

Detailed Description

The Pedigree network stack This function is the base for receiving packets, and provides functionality for keeping track of network devices in the system.

Definition at line 42 of file NetworkStack.h.

Constructor & Destructor Documentation

NetworkStack()

NetworkStack::NetworkStack

(

)

Definition at line 175 of file NetworkStack.cc.

~NetworkStack()

NetworkStack::~NetworkStack ( )

virtual

Definition at line 197 of file NetworkStack.cc.

Member Function Documentation

acquireDevice() [1/2]

bool NetworkStack::acquireDevice	(	Network *	pDevice,
		DeviceLease &	lease
	)

Pins a specific registered network device and interface.

Definition at line 349 of file NetworkStack.cc.

References m_Registrations, and OperationBarrier::tryAcquire().

acquireDevice() [2/2]

bool NetworkStack::acquireDevice	(	size_t	n,
		DeviceLease &	lease
	)

Pins the n'th registered network device and interface.

Definition at line 329 of file NetworkStack.cc.

References Vector< T >::count(), m_Children, m_Registrations, and OperationBarrier::tryAcquire().

Referenced by VirtioNet::irq(), and receive().

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deRegisterDevice()

void NetworkStack::deRegisterDevice

(

Network *

pDevice

)

Unregisters a given network device from the stack

Definition at line 364 of file NetworkStack.cc.

References Semaphore::acquire(), Vector< T >::begin(), OperationBarrier::close(), Vector< T >::end(), Vector< T >::erase(), ERR_OK, m_Children, m_Registrations, Semaphore::release(), tcpip_callback_wait(), and OperationBarrier::wait().

Referenced by Nic3C90x::Nic3C90x().

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getMemPool()

MemoryPool & NetworkStack::getMemPool ( )

inline

Grabs the memory pool for networking use

Definition at line 115 of file NetworkStack.h.

instance()

static NetworkStack & NetworkStack::instance ( )

inlinestatic

For access to the stack without declaring an instance of it

Definition at line 88 of file NetworkStack.h.

Referenced by Dm9601::initialiseDriver(), Nic3C90x::irq(), VirtioNet::irq(), Ne2k::Ne2k(), and Nic3C90x::Nic3C90x().

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instanceIfAvailable()

static NetworkStack * NetworkStack::instanceIfAvailable ( )

inlinestatic

Definition at line 92 of file NetworkStack.h.

receive() [1/2]

void NetworkStack::receive	(	size_t	nBytes,
		uintptr_t	packet,
		const DeviceLease &	device,
		uint32_t	offset
	)

Delivers a packet using a nonempty lease held for a driver receive batch.

Definition at line 240 of file NetworkStack.cc.

References Network::droppedPacket(), ERR_OK, ProcessorBase::inDeviceHardIrq(), netif::input, NetworkFilter::instance(), pbuf::len, pbuf::next, pbuf::payload, pbuf_alloc(), pbuf_free(), PBUF_POOL, and PBUF_RAW.

receive() [2/2]

void NetworkStack::receive	(	size_t	nBytes,
		uintptr_t	packet,
		Network *	pCard,
		uint32_t	offset
	)

Delivers a packet from a driver worker; must not run in a hard IRQ.

Definition at line 228 of file NetworkStack.cc.

References acquireDevice(), ProcessorBase::inDeviceHardIrq(), and receive().

Referenced by Nic3C90x::irq(), VirtioNet::irq(), and receive().

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registerDevice()

void NetworkStack::registerDevice

(

Network *

pDevice

)

Registers a given network device with the stack

Definition at line 286 of file NetworkStack.cc.

References ERR_OK, m_Children, m_NextInterfaceNumber, m_Registrations, netif::name, netif::num, Vector< T >::pushBack(), and tcpip_callback_wait().

Referenced by Dm9601::initialiseDriver(), Ne2k::Ne2k(), and Nic3C90x::Nic3C90x().

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Member Data Documentation

m_Children

Vector<Network*> NetworkStack::m_Children

private

Network devices registered with the stack.

Definition at line 125 of file NetworkStack.h.

Referenced by acquireDevice(), deRegisterDevice(), and registerDevice().

m_Lock

Mutex NetworkStack::m_Lock

private

Definition at line 131 of file NetworkStack.h.

m_MemPool

MemoryPool NetworkStack::m_MemPool

private

Networking memory pool

Definition at line 128 of file NetworkStack.h.

m_NextInterfaceNumber

size_t NetworkStack::m_NextInterfaceNumber

private

Next interface number to assign.

Definition at line 135 of file NetworkStack.h.

Referenced by registerDevice().

m_Registrations

Tree<Network*, DeviceRegistration*> NetworkStack::m_Registrations

private

Read-side lifetime state for registered devices and interfaces.

Definition at line 138 of file NetworkStack.h.

Referenced by acquireDevice(), acquireDevice(), deRegisterDevice(), and registerDevice().

stack

NetworkStack * NetworkStack::stack = 0

staticprivate

Definition at line 122 of file NetworkStack.h.

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

• NetworkStack.h
• NetworkStack.cc