PROBE::TCPMIB.RETR(3stap) SNMP Information Tapset PROBE::TCPMIB.RETR(3stap)

# [NAME](#NAME)

probe::tcpmib.RetransSegs - Count the retransmission of a TCP segment

# [SYNOPSIS](#SYNOPSIS)

```
probe tcpmib.RetransSegs {}
```

# [VALUES](#VALUES)

*op*

value to be added to the counter (default value of 1)

*sk*

pointer to the struct sock being acted on

# [DESCRIPTION](#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)

# [SEE ALSO0](#SEE_ALSO0)

[*tapset::tcpmib*(3stap)](/man/enterprise-packages/systemtap/tapset::tcpmib.3stap)

September 2026 SystemTap Tapset Reference Ver

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Document: probe::tcpmib.RetransSegs(3stap) from systemtap 5.6-r0 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git