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