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PROBE::NETFILTER.I(3stap) Networking Tapset PROBE::NETFILTER.I(3stap)

NAME

probe::netfilter.ip.pre_routing - Called before an IP packet is routed

SYNOPSIS

netfilter.ip.pre_routing

VALUES

saddr
A string representing the source IP address
urg
TCP URG flag (if protocol is TCP; ipv4 only)
nf_drop
Constant used to signify a 'drop' verdict
indev_name
Name of network device packet was received on (if known)
nf_stolen
Constant used to signify a 'stolen' verdict
length
The length of the packet buffer contents, in bytes
daddr
A string representing the destination IP address
nf_repeat
Constant used to signify a 'repeat' verdict
protocol
Packet protocol from driver (ipv4 only)
syn
TCP SYN flag (if protocol is TCP; ipv4 only)
rst
TCP RST flag (if protocol is TCP; ipv4 only)
nf_queue
Constant used to signify a 'queue' verdict
ipproto_tcp
Constant used to signify that the packet protocol is TCP
indev
Address of net_device representing input device, 0 if unknown
psh
TCP PSH flag (if protocol is TCP; ipv4 only)
outdev_name
Name of network device packet will be routed to (if known)
pf
Protocol family - either 'ipv4' or 'ipv6'
nf_accept
Constant used to signify an 'accept' verdict
ipproto_udp
Constant used to signify that the packet protocol is UDP
iphdr
Address of IP header
dport
TCP or UDP destination port (ipv4 only)
ack
TCP ACK flag (if protocol is TCP; ipv4 only)
fin
TCP FIN flag (if protocol is TCP; ipv4 only)
outdev
Address of net_device representing output device, 0 if unknown
family
IP address family
sport
TCP or UDP source port (ipv4 only)
nf_stop
Constant used to signify a 'stop' verdict

SEE ALSO0

tapset::netfilter(3stap)
March 2016 SystemTap Tapset Reference