| 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¶
ipproto_tcp
Constant used to signify that the packet protocol is
TCP
pf
Protocol family - either 'ipv4' or 'ipv6'
saddr
A string representing the source IP address
family
IP address family
dport
TCP or UDP destination port (ipv4 only)
ack
TCP ACK flag (if protocol is TCP; ipv4 only)
data_str
A string representing the packet buffer contents
protocol
Packet protocol from driver (ipv4 only)
nf_stop
Constant used to signify a 'stop' verdict
ipproto_udp
Constant used to signify that the packet protocol is
UDP
indev_name
Name of network device packet was received on (if
known)
iphdr
Address of IP header
nf_stolen
Constant used to signify a 'stolen' verdict
rst
TCP RST flag (if protocol is TCP; ipv4 only)
length
The length of the packet buffer contents, in bytes
data_hex
A hexadecimal string representing the packet buffer
contents
nf_queue
Constant used to signify a 'queue' verdict
syn
TCP SYN flag (if protocol is TCP; ipv4 only)
sport
TCP or UDP source port (ipv4 only)
nf_drop
Constant used to signify a 'drop' verdict
outdev_name
Name of network device packet will be routed to (if
known)
daddr
A string representing the destination IP address
outdev
Address of net_device representing output device, 0 if
unknown
indev
Address of net_device representing input device, 0 if
unknown
nf_accept
Constant used to signify an 'accept' verdict
psh
TCP PSH flag (if protocol is TCP; ipv4 only)
fin
TCP FIN flag (if protocol is TCP; ipv4 only)
urg
TCP URG flag (if protocol is TCP; ipv4 only)
nf_repeat
Constant used to signify a 'repeat' verdict
SEE ALSO0¶
tapset::netfilter(3stap)
| April 2023 | SystemTap Tapset Reference |