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

NAME
probe::tcp.recvmsg.return - Receiving TCP message complete
SYNOPSIS
tcp.recvmsg.return
VALUES
saddr
A string representing the source IP address
name
Name of this probe
sport
TCP source port
dport
TCP destination port
family
IP address family
daddr
A string representing the destination IP address
size
Number of bytes received or error code if an error occurred.
CONTEXT
The process which receives a tcp message
SystemTap Tapset Reference March 2016 PROBE::TCP.RECVMSG(3stap)