---
title: sendPacket
framework: kernel
role: pseudoSymbol
path: kernel/ionetworkcontroller/1813988-sendpacket
---

# sendPacket

Debugger polled-mode transmit handler.

## Declaration

```occ
virtual void sendPacket(
 void *pkt,
 UInt32pktSize); 
```

## Parameters

- `pkt`: Pointer to a transmit buffer containing the packet to be sent on the network.
- `pktSize`: The size of the transmit buffer in bytes.

## Overview

Overview This method must be implemented by a driver that supports kernel debugging. After a debugger client has been attached through attachDebuggerClient(), this method will be called by the debugger to send an outbound packet only when the kernel debugger is active. This method may be called from the primary interrupt context, and the implementation must avoid any memory allocation, and must never block. The sendPacket() method in IONetworkController is used as a placeholder, it performs no useful action, and should not be called. A driver that attaches a debugger client must override this method.

## See Also

### Miscellaneous

- [allocatePacket](kernel/ionetworkcontroller/1813917-allocatepacket.md)
- [attachDebuggerClient](kernel/ionetworkcontroller/1813919-attachdebuggerclient.md)
- [attachInterface](kernel/ionetworkcontroller/1813921-attachinterface.md)
- [configureInterface](kernel/ionetworkcontroller/1813923-configureinterface.md)
- [copyMediumDictionary](kernel/ionetworkcontroller/1813924-copymediumdictionary.md)
- [copyPacket](kernel/ionetworkcontroller/1813925-copypacket.md)
- [createInterface](kernel/ionetworkcontroller/1813926-createinterface.md)
- [createOutputQueue](kernel/ionetworkcontroller/1813927-createoutputqueue.md)
- [createWorkLoop](kernel/ionetworkcontroller/1813928-createworkloop.md)
- [detachDebuggerClient](kernel/ionetworkcontroller/1813929-detachdebuggerclient.md)
- [detachInterface](kernel/ionetworkcontroller/1813930-detachinterface.md)
- [disable](kernel/ionetworkcontroller/1813931-disable.md)
- [disable(IONetworkInterface *)](kernel/ionetworkcontroller/1813932-disable.md)
- [disable(IOService *)](kernel/ionetworkcontroller/1813933-disable.md)
- [disablePacketFilter](kernel/ionetworkcontroller/1813934-disablepacketfilter.md)
- [doDisable](kernel/ionetworkcontroller/1813935-dodisable.md)
- [doEnable](kernel/ionetworkcontroller/1813936-doenable.md)
- [enable](kernel/ionetworkcontroller/1813937-enable.md)
- [enable(IONetworkInterface *)](kernel/ionetworkcontroller/1813938-enable.md)
- [enable(IOService *)](kernel/ionetworkcontroller/1813939-enable.md)
- [enablePacketFilter](kernel/ionetworkcontroller/1813940-enablepacketfilter.md)
- [executeCommand](kernel/ionetworkcontroller/1813941-executecommand.md)
- [free](kernel/ionetworkcontroller/1813942-free.md)
- [freePacket](kernel/ionetworkcontroller/1813943-freepacket.md)
- [getChecksumDemand](kernel/ionetworkcontroller/1813944-getchecksumdemand.md)
- [getChecksumSupport](kernel/ionetworkcontroller/1813945-getchecksumsupport.md)
- [getCommandClient](kernel/ionetworkcontroller/1813946-getcommandclient.md)
- [getCommandGate](kernel/ionetworkcontroller/1813947-getcommandgate.md)
- [getDebuggerLinkStatus](kernel/ionetworkcontroller/1813949-getdebuggerlinkstatus.md)
- [getFeatures](kernel/ionetworkcontroller/1813951-getfeatures.md)
- [getHardwareAddress](kernel/ionetworkcontroller/1813953-gethardwareaddress.md)
- [getMaxPacketSize](kernel/ionetworkcontroller/1813954-getmaxpacketsize.md)
- [getMediumDictionary](kernel/ionetworkcontroller/1813956-getmediumdictionary.md)
- [getMinPacketSize](kernel/ionetworkcontroller/1813957-getminpacketsize.md)
- [getOutputHandler](kernel/ionetworkcontroller/1813959-getoutputhandler.md)
- [getOutputQueue](kernel/ionetworkcontroller/1813960-getoutputqueue.md)
- [getPacketBufferConstraints](kernel/ionetworkcontroller/1813962-getpacketbufferconstraints.md)
- [getPacketFilters](kernel/ionetworkcontroller/1813964-getpacketfilters.md)
- [getSelectedMedium](kernel/ionetworkcontroller/1813966-getselectedmedium.md)
- [handleClose](kernel/ionetworkcontroller/1813967-handleclose.md)
- [handleIsOpen](kernel/ionetworkcontroller/1813968-handleisopen.md)
- [handleOpen](kernel/ionetworkcontroller/1813969-handleopen.md)
- [init](kernel/ionetworkcontroller/1813970-init.md)
- [message](kernel/ionetworkcontroller/1813971-message.md)
- [newModelString](kernel/ionetworkcontroller/1813972-newmodelstring.md)
- [newRevisionString](kernel/ionetworkcontroller/1813973-newrevisionstring.md)
- [newVendorString](kernel/ionetworkcontroller/1813974-newvendorstring.md)
- [outputPacket](kernel/ionetworkcontroller/1813975-outputpacket.md)
- [prepare](kernel/ionetworkcontroller/1813976-prepare.md)
- [publishMediumDictionary](kernel/ionetworkcontroller/1813977-publishmediumdictionary.md)
- [publishProperties](kernel/ionetworkcontroller/1813978-publishproperties.md)
- [receivePacket](kernel/ionetworkcontroller/1813979-receivepacket.md)
- [registerWithPolicyMaker](kernel/ionetworkcontroller/1813980-registerwithpolicymaker.md)
- [releaseDebuggerLock](kernel/ionetworkcontroller/1813981-releasedebuggerlock.md)
- [releaseFreePackets](kernel/ionetworkcontroller/1813982-releasefreepackets.md)
- [replaceOrCopyPacket](kernel/ionetworkcontroller/1813983-replaceorcopypacket.md)
- [replacePacket](kernel/ionetworkcontroller/1813984-replacepacket.md)
- [reserveDebuggerLock](kernel/ionetworkcontroller/1813985-reservedebuggerlock.md)
- [selectMedium](kernel/ionetworkcontroller/1813986-selectmedium.md)
- [selectMediumWithName](kernel/ionetworkcontroller/1813987-selectmediumwithname.md)
- [setChecksumResult](kernel/ionetworkcontroller/1813989-setchecksumresult.md)
- [setDebuggerMode](kernel/ionetworkcontroller/1813990-setdebuggermode.md)
- [setHardwareAddress](kernel/ionetworkcontroller/1813991-sethardwareaddress.md)
- [setLinkStatus](kernel/ionetworkcontroller/1813992-setlinkstatus.md)
- [setMaxPacketSize](kernel/ionetworkcontroller/1813993-setmaxpacketsize.md)
- [setSelectedMedium](kernel/ionetworkcontroller/1813994-setselectedmedium.md)
- [start](kernel/ionetworkcontroller/1813995-start.md)
- [stop](kernel/ionetworkcontroller/1813996-stop.md)
- [systemWillShutdown](kernel/ionetworkcontroller/1813997-systemwillshutdown.md)