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 pf
13 Protocol family - either 'ipv4' or 'ipv6'
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15 nf_stolen
16 Constant used to signify a 'stolen' verdict
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18 daddr
19 A string representing the destination IP address
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21 outdev
22 Address of net_device representing output device, 0 if unknown
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24 data_str
25 A string representing the packet buffer contents
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27 ack
28 TCP ACK flag (if protocol is TCP; ipv4 only)
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30 ipproto_udp
31 Constant used to signify that the packet protocol is UDP
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33 rst
34 TCP RST flag (if protocol is TCP; ipv4 only)
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36 iphdr
37 Address of IP header
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39 indev
40 Address of net_device representing input device, 0 if unknown
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42 nf_stop
43 Constant used to signify a 'stop' verdict
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45 saddr
46 A string representing the source IP address
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48 protocol
49 Packet protocol from driver (ipv4 only)
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51 nf_accept
52 Constant used to signify an 'accept' verdict
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54 psh
55 TCP PSH flag (if protocol is TCP; ipv4 only)
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57 nf_queue
58 Constant used to signify a 'queue' verdict
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60 nf_repeat
61 Constant used to signify a 'repeat' verdict
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63 length
64 The length of the packet buffer contents, in bytes
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66 indev_name
67 Name of network device packet was received on (if known)
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69 dport
70 TCP or UDP destination port (ipv4 only)
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72 ipproto_tcp
73 Constant used to signify that the packet protocol is TCP
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75 family
76 IP address family
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78 urg
79 TCP URG flag (if protocol is TCP; ipv4 only)
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81 fin
82 TCP FIN flag (if protocol is TCP; ipv4 only)
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84 nf_drop
85 Constant used to signify a 'drop' verdict
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87 syn
88 TCP SYN flag (if protocol is TCP; ipv4 only)
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90 outdev_name
91 Name of network device packet will be routed to (if known)
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93 data_hex
94 A hexadecimal string representing the packet buffer contents
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96 sport
97 TCP or UDP source port (ipv4 only)
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100 tapset::netfilter(3stap)
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104SystemTap Tapset Reference November 2020 PROBE::NETFILTER.I(3stap)