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Red Hat Enterprise Linux 6 Essentials eBook now available in PDF and ePub formats for only $9.99
RHEL 6 Essentials contains 40 chapters and over 250 pages.

Chapter 11. Networking Tapset

probe::netdev.receive — Data received from network device.
probe::netdev.transmit — Network device transmitting buffer
probe::netdev.change_mtu — Called when the netdev MTU is changed
probe::netdev.open — Called when the device is opened
probe::netdev.close — Called when the device is closed
probe::netdev.hard_transmit — Called when the devices is going to TX (hard)
probe::netdev.rx — Called when the device is going to receive a packet
probe::netdev.change_rx_flag — Called when the device RX flag will be changed
probe::netdev.set_promiscuity — Called when the device enters/leaves promiscuity
probe::netdev.ioctl — Called when the device suffers an IOCTL
probe::netdev.register — Called when the device is registered
probe::netdev.unregister — Called when the device is being unregistered
probe::netdev.get_stats — Called when someone asks the device statistics
probe::netdev.change_mac — Called when the netdev_name has the MAC changed
probe::tcp.sendmsg — Sending a tcp message
probe::tcp.sendmsg.return — Sending TCP message is done
probe::tcp.recvmsg — Receiving TCP message
probe::tcp.recvmsg.return — Receiving TCP message complete
probe::tcp.disconnect — TCP socket disconnection
probe::tcp.disconnect.return — TCP socket disconnection complete
probe::tcp.setsockopt — Call to setsockopt
probe::tcp.setsockopt.return — Return from setsockopt
probe::tcp.receive — Called when a TCP packet is received
probe::udp.sendmsg — Fires whenever a process sends a UDP message
probe::udp.sendmsg.return — Fires whenever an attempt to send a UDP message is completed
probe::udp.recvmsg — Fires whenever a UDP message is received
probe::udp.recvmsg.return — Fires whenever an attempt to receive a UDP message received is completed
probe::udp.disconnect — Fires when a process requests for a UDP disconnection
probe::udp.disconnect.return — UDP has been disconnected successfully
function::ip_ntop — returns a string representation from an integer IP number
This family of probe points is used to probe the activities of the network device and protocol layers.

Name

probe::netdev.receive — Data received from network device.

Synopsis

netdev.receive

Values

protocol
Protocol of received packet.
dev_name
The name of the device. e.g: eth0, ath1.
length
The length of the receiving buffer.

Name

probe::netdev.transmit — Network device transmitting buffer

Synopsis

netdev.transmit

Values

protocol
The protocol of this packet(defined in include/linux/if_ether.h).
dev_name
The name of the device. e.g: eth0, ath1.
length
The length of the transmit buffer.
truesize
The size of the data to be transmitted.

Name

probe::netdev.change_mtu — Called when the netdev MTU is changed

Synopsis

netdev.change_mtu

Values

dev_name
The device that will have the MTU changed
new_mtu
The new MTU
old_mtu
The current MTU

Name

probe::netdev.open — Called when the device is opened

Synopsis

netdev.open

Values

dev_name
The device that is going to be opened

Name

probe::netdev.close — Called when the device is closed

Synopsis

netdev.close

Values

dev_name
The device that is going to be closed

Name

probe::netdev.hard_transmit — Called when the devices is going to TX (hard)

Synopsis

netdev.hard_transmit

Values

protocol
The protocol used in the transmission
dev_name
The device scheduled to transmit
length
The length of the transmit buffer.
truesize
The size of the data to be transmitted.

Name

probe::netdev.rx — Called when the device is going to receive a packet

Synopsis

netdev.rx

Values

protocol
The packet protocol
dev_name
The device received the packet

Name

probe::netdev.change_rx_flag — Called when the device RX flag will be changed

Synopsis

netdev.change_rx_flag

Values

dev_name
The device that will be changed
flags
The new flags

Name

probe::netdev.set_promiscuity — Called when the device enters/leaves promiscuity

Synopsis

netdev.set_promiscuity

Values

dev_name
The device that is entering/leaving promiscuity mode
enable
If the device is entering promiscuity mode
inc
Count the number of promiscuity openers
disable
If the device is leaving promiscuity mode

Name

probe::netdev.ioctl — Called when the device suffers an IOCTL

Synopsis

netdev.ioctl

Values

cmd
The IOCTL request
arg
The IOCTL argument (usually the netdev interface)

Name

probe::netdev.register — Called when the device is registered

Synopsis

netdev.register

Values

dev_name
The device that is going to be registered

Name

probe::netdev.unregister — Called when the device is being unregistered

Synopsis

netdev.unregister

Values

dev_name
The device that is going to be unregistered

Name

probe::netdev.get_stats — Called when someone asks the device statistics

Synopsis

netdev.get_stats

Values

dev_name
The device that is going to provide the statistics

Name

probe::netdev.change_mac — Called when the netdev_name has the MAC changed

Synopsis

netdev.change_mac

Values

dev_name
The device that will have the MTU changed
new_mac
The new MAC address
mac_len
The MAC length
old_mac
The current MAC address

Name

probe::tcp.sendmsg — Sending a tcp message

Synopsis

tcp.sendmsg

Values

name
Name of this probe
size
Number of bytes to send
sock
Network socket

Context

The process which sends a tcp message

Name

probe::tcp.sendmsg.return — Sending TCP message is done

Synopsis

tcp.sendmsg.return

Values

name
Name of this probe
size
Number of bytes sent or error code if an error occurred.

Context

The process which sends a tcp message

Name

probe::tcp.recvmsg — Receiving TCP message

Synopsis

tcp.recvmsg

Values

saddr
A string representing the source IP address
daddr
A string representing the destination IP address
name
Name of this probe
sport
TCP source port
dport
TCP destination port
size
Number of bytes to be received
sock
Network socket

Context

The process which receives a tcp message

Name

probe::tcp.recvmsg.return — Receiving TCP message complete

Synopsis

tcp.recvmsg.return

Values

saddr
A string representing the source IP address
daddr
A string representing the destination IP address
name
Name of this probe
sport
TCP source port
dport
TCP destination port
size
Number of bytes received or error code if an error occurred.

Context

The process which receives a tcp message

Name

probe::tcp.disconnect — TCP socket disconnection

Synopsis

tcp.disconnect

Values

saddr
A string representing the source IP address
daddr
A string representing the destination IP address
flags
TCP flags (e.g. FIN, etc)
name
Name of this probe
sport
TCP source port
dport
TCP destination port
sock
Network socket

Context

The process which disconnects tcp

Name

probe::tcp.disconnect.return — TCP socket disconnection complete

Synopsis

tcp.disconnect.return

Values

ret
Error code (0: no error)
name
Name of this probe

Context

The process which disconnects tcp

Name

probe::tcp.setsockopt — Call to setsockopt

Synopsis

tcp.setsockopt

Values

optstr
Resolves optname to a human-readable format
level
The level at which the socket options will be manipulated
optlen
Used to access values for setsockopt
name
Name of this probe
optname
TCP socket options (e.g. TCP_NODELAY, TCP_MAXSEG, etc)
sock
Network socket

Context

The process which calls setsockopt

Name

probe::tcp.setsockopt.return — Return from setsockopt

Synopsis

tcp.setsockopt.return

Values

ret
Error code (0: no error)
name
Name of this probe

Context

The process which calls setsockopt

Name

probe::tcp.receive — Called when a TCP packet is received

Synopsis

tcp.receive

Values

urg
TCP URG flag
protocol
Packet protocol from driver
psh
TCP PSH flag
name
Name of the probe point
rst
TCP RST flag
dport
TCP destination port
saddr
A string representing the source IP address
daddr
A string representing the destination IP address
ack
TCP ACK flag
fin
TCP FIN flag
syn
TCP SYN flag
sport
TCP source port
iphdr
IP header address

Name

probe::udp.sendmsg — Fires whenever a process sends a UDP message

Synopsis

udp.sendmsg

Values

name
The name of this probe
size
Number of bytes sent by the process
sock
Network socket used by the process

Context

The process which sent a UDP message

Name

probe::udp.sendmsg.return — Fires whenever an attempt to send a UDP message is completed

Synopsis

udp.sendmsg.return

Values

name
The name of this probe
size
Number of bytes sent by the process

Context

The process which sent a UDP message

Name

probe::udp.recvmsg — Fires whenever a UDP message is received

Synopsis

udp.recvmsg

Values

name
The name of this probe
size
Number of bytes received by the process
sock
Network socket used by the process

Context

The process which received a UDP message

Name

probe::udp.recvmsg.return — Fires whenever an attempt to receive a UDP message received is completed

Synopsis

udp.recvmsg.return

Values

name
The name of this probe
size
Number of bytes received by the process

Context

The process which received a UDP message

Name

probe::udp.disconnect — Fires when a process requests for a UDP disconnection

Synopsis

udp.disconnect

Values

flags
Flags (e.g. FIN, etc)
name
The name of this probe
sock
Network socket used by the process

Context

The process which requests a UDP disconnection

Name

probe::udp.disconnect.return — UDP has been disconnected successfully

Synopsis

udp.disconnect.return

Values

ret
Error code (0: no error)
name
The name of this probe

Context

The process which requested a UDP disconnection

Name

function::ip_ntop — returns a string representation from an integer IP number

Synopsis

function ip_ntop:string(addr:long)

Arguments

addr
the ip represented as an integer

 
 
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