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

NAME
probe::tcpmib.RetransSegs - Count the retransmission of a TCP segment
SYNOPSIS
tcpmib.RetransSegs
VALUES
op
value to be added to the counter (default value of 1)
sk
pointer to the struct sock being acted on
DESCRIPTION
The packet pointed to by skb is filtered by the function tcpmib_filter_key. If the packet passes the
filter is is counted in the global RetransSegs (equivalent to SNMP's MIB TCP_MIB_RETRANSSEGS)
SystemTap Tapset Reference March 2016 PROBE::TCPMIB.RETR(3stap)