Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
probe::udp.sendmsg.return - Fires whenever an attempt to send a UDP message is completed
SYNOPSIS
udp.sendmsg.return
VALUES
size
Number of bytes sent by the process
name
The name of this probe
CONTEXT
The process which sent a UDP message
SystemTap Tapset Reference March 2016 PROBE::UDP.SENDMSG(3stap)