Icmp6 Class Reference

#include <Icmp6.h>

Inheritance diagram for Icmp6:

Collaboration diagram for Icmp6:

Public Member Functions
	Icmp6 ()
	~Icmp6 () override
int	Open () override
	Start pinger helper and initiate control channel.
void	SendEcho (Ip::Address &, int, const char *, int) override
void	Recv (void) override
virtual void	Close ()
	Shutdown pinger helper and control channel.

Protected Member Functions
int	CheckSum (unsigned short *ptr, int size)
	Calculate a packet checksum.
int	ipHops (int ttl)
void	Log (const Ip::Address &addr, const uint8_t type, const char *pkt_str, const int rtt, const int hops)
	Log the packet.

Protected Attributes
int	icmp_sock
int	icmp_ident

Detailed Description

Class partially implementing RFC 4443 - ICMPv6 for IP version 6. Provides ECHO-REQUEST, ECHO-REPLY (section 4)

Definition at line 45 of file Icmp6.h.

Constructor & Destructor Documentation

Icmp6()

Icmp6::Icmp6

(

)

Definition at line 89 of file Icmp6.cc.

~Icmp6()

Icmp6::~Icmp6 ( )

override

Definition at line 94 of file Icmp6.cc.

References Icmp::Close().

Member Function Documentation

CheckSum()

int Icmp::CheckSum ( unsigned short *  ptr, int  size  )

protectedinherited

Definition at line 39 of file Icmp.cc.

References size.

Referenced by Icmp4::SendEcho(), SendEcho(), and IcmpStub::testChecksum().

Close()

void Icmp::Close ( void  )

virtualinherited

Reimplemented in IcmpPinger, IcmpSquid, and IcmpStub.

Definition at line 26 of file Icmp.cc.

References Icmp::icmp_ident, Icmp::icmp_sock, and xclose().

Referenced by Icmp4::~Icmp4(), ~Icmp6(), IcmpPinger::Close(), and main().

ipHops()

int Icmp::ipHops ( int  ttl )

protectedinherited

Translate TTL to a hop distance

Parameters

ttl	negative : n > 33
ttl	n(0...32) : 32 >= n >= 1
ttl	n(33...62) : 32 >= n >= 1
ttl	n(63...64) : 2 >= n >= 1
ttl	n(65...128) : 64 >= n >= 1
ttl	n(129...192) : 64 >= n >= 1
ttl	n(193...) : n < 255

XXX: BUG? ttl<0 can produce high hop values XXX: BUG? ttl>255 can produce zero or negative hop values

Definition at line 68 of file Icmp.cc.

Referenced by Icmp4::Recv(), and IcmpStub::testHops().

Log()

void Icmp::Log ( const Ip::Address &  addr, const uint8_t  type, const char *  pkt_str, const int  rtt, const int  hops  )

protectedinherited

Definition at line 89 of file Icmp.cc.

References current_time, and debugs.

Open()

int Icmp6::Open ( )

overridevirtual

Implements Icmp.

Definition at line 100 of file Icmp6.cc.

References DBG_CRITICAL, DBG_IMPORTANT, debugs, Icmp::icmp_ident, Icmp::icmp_sock, IPPROTO_ICMPV6, MYNAME, xsocket(), and xstrerr().

Referenced by main().

Recv()

void Icmp6::Recv ( void  )

overridevirtual

Reads an RFC 4443 Icmp6 ECHO-REPLY Packet from the network.

Implements Icmp.

Definition at line 200 of file Icmp6.cc.

References assert, control, DBG_CRITICAL, debugs, Ip::Address::FreeAddr(), Icmp::icmp_ident, Icmp::icmp_sock, IcmpPacketType(), Ip::Address::InitAddr(), MAX_PAYLOAD, MAX_PKT6_SZ, icmpEchoData::opcode, icmpEchoData::payload, PINGER_PAYLOAD_SZ, IcmpPinger::SendResult(), icmpEchoData::tv, tvSubMsec(), xmalloc, and xrecvfrom().

Referenced by main().

SendEcho()

void Icmp6::SendEcho ( Ip::Address &  to, int  opcode, const char *  payload, int  len  )

overridevirtual

Generates an RFC 4443 Icmp6 ECHO Packet and sends into the network.

Implements Icmp.

Definition at line 120 of file Icmp6.cc.

References assert, Assure, Icmp::CheckSum(), current_time, DBG_IMPORTANT, debugs, Ip::Address::FreeAddr(), Ip::Address::getAddrInfo(), Icmp::icmp_ident, icmp_pkts_sent, Icmp::icmp_sock, LOCAL_ARRAY, MAX_PAYLOAD, MAX_PKT6_SZ, icmpEchoData::opcode, icmpEchoData::payload, icmpEchoData::tv, xsendto(), and xstrerr().

Referenced by IcmpPinger::Recv().

Member Data Documentation

icmp_ident

int Icmp::icmp_ident

protectedinherited

Definition at line 122 of file Icmp.h.

Referenced by Icmp::Icmp(), Icmp::Close(), Icmp4::Open(), Open(), Icmp4::Recv(), Recv(), Icmp4::SendEcho(), and SendEcho().

icmp_sock

int Icmp::icmp_sock

protectedinherited

Definition at line 121 of file Icmp.h.

Referenced by Icmp::Icmp(), Icmp::Close(), IcmpPinger::Close(), IcmpSquid::Close(), Icmp4::Open(), Open(), IcmpPinger::Open(), IcmpSquid::Open(), Icmp4::Recv(), Recv(), IcmpSquid::Recv(), Icmp4::SendEcho(), SendEcho(), and IcmpSquid::SendEcho().

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

• squid/src/icmp/Icmp6.h
• squid/src/icmp/Icmp6.cc