1PROBE::NETFILTER.I(3stap) Networking Tapset PROBE::NETFILTER.I(3stap)
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6 probe::netfilter.ip.pre_routing - Called before an IP packet is routed
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9 netfilter.ip.pre_routing
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12 nf_accept
13 Constant used to signify an 'accept' verdict
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15 daddr
16 A string representing the destination IP address
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18 ipproto_tcp
19 Constant used to signify that the packet protocol is TCP
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21 sport
22 TCP or UDP source port (ipv4 only)
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24 iphdr
25 Address of IP header
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27 saddr
28 A string representing the source IP address
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30 length
31 The length of the packet buffer contents, in bytes
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33 fin
34 TCP FIN flag (if protocol is TCP; ipv4 only)
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36 dport
37 TCP or UDP destination port (ipv4 only)
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39 protocol
40 Packet protocol from driver (ipv4 only)
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42 family
43 IP address family
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45 ack
46 TCP ACK flag (if protocol is TCP; ipv4 only)
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48 nf_repeat
49 Constant used to signify a 'repeat' verdict
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51 ipproto_udp
52 Constant used to signify that the packet protocol is UDP
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54 nf_stolen
55 Constant used to signify a 'stolen' verdict
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57 indev
58 Address of net_device representing input device, 0 if unknown
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60 rst
61 TCP RST flag (if protocol is TCP; ipv4 only)
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63 pf
64 Protocol family - either 'ipv4' or 'ipv6'
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66 nf_drop
67 Constant used to signify a 'drop' verdict
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69 outdev
70 Address of net_device representing output device, 0 if unknown
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72 outdev_name
73 Name of network device packet will be routed to (if known)
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75 syn
76 TCP SYN flag (if protocol is TCP; ipv4 only)
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78 nf_queue
79 Constant used to signify a 'queue' verdict
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81 indev_name
82 Name of network device packet was received on (if known)
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84 psh
85 TCP PSH flag (if protocol is TCP; ipv4 only)
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87 data_hex
88 A hexadecimal string representing the packet buffer contents
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90 nf_stop
91 Constant used to signify a 'stop' verdict
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93 data_str
94 A string representing the packet buffer contents
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96 urg
97 TCP URG flag (if protocol is TCP; ipv4 only)
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100 tapset::netfilter(3stap)
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104SystemTap Tapset Reference June 2018 PROBE::NETFILTER.I(3stap)