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PROBE::NETFILTER.I(3stap) Networking Tapset PROBE::NETFILTER.I(3stap)
probe::netfilter.ip.pre_routing - Called before an IP packet is
routed
netfilter.ip.pre_routing
indev
Address of net_device representing input device, 0 if unknown
sport
TCP or UDP source port (ipv4 only)
pf
Protocol family - either 'ipv4' or 'ipv6'
outdev
Address of net_device representing output device, 0 if
unknown
ipproto_tcp
Constant used to signify that the packet protocol is TCP
family
IP address family
dport
TCP or UDP destination port (ipv4 only)
syn
TCP SYN flag (if protocol is TCP; ipv4 only)
nf_stolen
Constant used to signify a 'stolen' verdict
data_hex
A hexadecimal string representing the packet buffer contents
nf_accept
Constant used to signify an 'accept' verdict
indev_name
Name of network device packet was received on (if known)
urg
TCP URG flag (if protocol is TCP; ipv4 only)
rst
TCP RST flag (if protocol is TCP; ipv4 only)
nf_drop
Constant used to signify a 'drop' verdict
nf_repeat
Constant used to signify a 'repeat' verdict
length
The length of the packet buffer contents, in bytes
iphdr
Address of IP header
data_str
A string representing the packet buffer contents
fin
TCP FIN flag (if protocol is TCP; ipv4 only)
ipproto_udp
Constant used to signify that the packet protocol is UDP
psh
TCP PSH flag (if protocol is TCP; ipv4 only)
protocol
Packet protocol from driver (ipv4 only)
nf_queue
Constant used to signify a 'queue' verdict
nf_stop
Constant used to signify a 'stop' verdict
daddr
A string representing the destination IP address
outdev_name
Name of network device packet will be routed to (if known)
saddr
A string representing the source IP address
ack
TCP ACK flag (if protocol is TCP; ipv4 only)
tapset::netfilter(3stap)
This page is part of the systemtap (a tracing and live-system
analysis tool) project. Information about the project can be
found at ⟨https://sourceware.org/systemtap/⟩. If you have a bug
report for this manual page, send it to [email protected].
This page was obtained from the project's upstream Git repository
⟨git://sourceware.org/git/systemtap.git⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-13.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
SystemTap Tapset Reference April 2024 PROBE::NETFILTER.I(3stap)
Pages that refer to this page: tapset::netfilter(3stap)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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