1PROBE::NETFILTER.I(3stap)      Networking Tapset     PROBE::NETFILTER.I(3stap)
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NAME

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

9       netfilter.ip.pre_routing
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VALUES

12       ipproto_udp
13           Constant used to signify that the packet protocol is UDP
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15       outdev
16           Address of net_device representing output device, 0 if unknown
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18       data_hex
19           A hexadecimal string representing the packet buffer contents
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21       nf_drop
22           Constant used to signify a 'drop' verdict
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24       nf_queue
25           Constant used to signify a 'queue' verdict
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27       saddr
28           A string representing the source IP address
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30       nf_repeat
31           Constant used to signify a 'repeat' verdict
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33       nf_stolen
34           Constant used to signify a 'stolen' verdict
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36       syn
37           TCP SYN flag (if protocol is TCP; ipv4 only)
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39       rst
40           TCP RST flag (if protocol is TCP; ipv4 only)
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42       iphdr
43           Address of IP header
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45       sport
46           TCP or UDP source port (ipv4 only)
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48       urg
49           TCP URG flag (if protocol is TCP; ipv4 only)
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51       family
52           IP address family
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54       ack
55           TCP ACK flag (if protocol is TCP; ipv4 only)
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57       nf_accept
58           Constant used to signify an 'accept' verdict
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60       indev_name
61           Name of network device packet was received on (if known)
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63       psh
64           TCP PSH flag (if protocol is TCP; ipv4 only)
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66       outdev_name
67           Name of network device packet will be routed to (if known)
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69       indev
70           Address of net_device representing input device, 0 if unknown
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72       fin
73           TCP FIN flag (if protocol is TCP; ipv4 only)
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75       nf_stop
76           Constant used to signify a 'stop' verdict
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78       length
79           The length of the packet buffer contents, in bytes
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81       pf
82           Protocol family - either 'ipv4' or 'ipv6'
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84       data_str
85           A string representing the packet buffer contents
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87       dport
88           TCP or UDP destination port (ipv4 only)
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90       daddr
91           A string representing the destination IP address
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93       ipproto_tcp
94           Constant used to signify that the packet protocol is TCP
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96       protocol
97           Packet protocol from driver (ipv4 only)
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SEE ALSO

100       tapset::netfilter(3stap)
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104SystemTap Tapset Reference         May 2022          PROBE::NETFILTER.I(3stap)
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