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global packets, addr_errors, family_errors
global localhost
probe tcp.receive
{
if (sport != 8079 && dport != 8079) {
next
}
# We got a packet with either a source or destination port of 8079.
packets <<< 1
# Did the IP address get converted correctly?
if (family == AF_INET() || family == AF_INET6()) {
if (sport == 8079 && saddr != localhost[family]) {
addr_errors <<< 1
printf("error: saddr %s isn't %s\n", saddr,
localhost[family])
}
else if (dport == 8079 && daddr != localhost[family]) {
addr_errors <<< 1
printf("error: daddr %s isn't %s\n", daddr,
localhost[family])
}
}
else {
family_errors <<< 1
}
}
probe begin {
printf("systemtap starting probe\n")
localhost[AF_INET()] = "127.0.0.1"
localhost[AF_INET6()] = "0000:0000:0000:0000:0000:0000:0000:0001"
}
probe end {
printf("systemtap ending probe\n")
if (@count(packets) > 0) {
printf("packets = %d\n", @count(packets))
}
else {
printf("no packets seen\n")
}
printf("address errors = %d\n", @count(addr_errors))
printf("bad family errors = %d\n", @count(family_errors))
}
|
