Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
probe::udp.recvmsg.return - Fires whenever an attempt to receive a UDP message received is completed
SYNOPSIS
udp.recvmsg.return
VALUES
dport
UDP destination port
daddr
A string representing the destination IP address
size
Number of bytes received by the process
name
The name of this probe
sport
UDP source port
family
IP address family
saddr
A string representing the source IP address
CONTEXT
The process which received a UDP message
SEE ALSO
tapset::udp(3stap)
SystemTap Tapset Reference March 2016 PROBE::UDP.RECVMSG(3stap)