1.\" Copyright (c) 2015 Mark Johnston <markj@FreeBSD.org>
2.\" All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.
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17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23.\" SUCH DAMAGE.
24.\"
25.\" $FreeBSD: head/share/man/man4/dtrace_tcp.4 292265 2015-12-15 13:29:05Z brueffer $
26.\"
27.Dd July 5, 2015
28.Dt DTRACE_TCP 4
29.Os
30.Sh NAME
31.Nm dtrace_tcp
32.Nd a DTrace provider for tracing events related to the
33.Xr tcp 4
34protocol
35.Sh SYNOPSIS
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212.It Vt uint32_t tcps_suna
213Initial sequence number of sent but unacknowledged data.
214.It Vt uint32_t tcps_snxt
215Next sequence number for send.
216.It Vt uint32_t tcps_rack
217Sequence number of received and acknowledged data.
218.It Vt uint32_t tcps_rnxt
219Next expected sequence number for receive.
220.It Vt uint32_t tcps_swnd
221TCP send window size.
222.It Vt int32_t tcps_snd_ws
223Window scaling factor for the TCP send window.
224.It Vt uint32_t tcps_rwnd
225TCP receive window size.
226.It Vt int32_t tcps_rcv_ws
227Window scaling factor for the TCP receive window.
228.It Vt uint32_t tcps_cwnd
229TCP congestion window size.
230.It Vt uint32_t tcps_cwnd_ssthresh
231Congestion window threshold at which slow start ends and congestion avoidance
232begins.
233.It Vt uint32_t tcps_sack_fack
234Last sequence number selectively acknowledged by the receiver.
235.It Vt uint32_t tcps_sack_snxt
236Next selectively acknowledge sequence number at which to begin retransmitting.
237.It Vt uint32_t tcps_rto
238Round-trip timeout, in milliseconds.
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2.\" All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.
--- 8 unchanged lines hidden (view full) ---
17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23.\" SUCH DAMAGE.
24.\"
25.\" $FreeBSD: head/share/man/man4/dtrace_tcp.4 292265 2015-12-15 13:29:05Z brueffer $
26.\"
27.Dd July 5, 2015
28.Dt DTRACE_TCP 4
29.Os
30.Sh NAME
31.Nm dtrace_tcp
32.Nd a DTrace provider for tracing events related to the
33.Xr tcp 4
34protocol
35.Sh SYNOPSIS
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212.It Vt uint32_t tcps_suna
213Initial sequence number of sent but unacknowledged data.
214.It Vt uint32_t tcps_snxt
215Next sequence number for send.
216.It Vt uint32_t tcps_rack
217Sequence number of received and acknowledged data.
218.It Vt uint32_t tcps_rnxt
219Next expected sequence number for receive.
220.It Vt uint32_t tcps_swnd
221TCP send window size.
222.It Vt int32_t tcps_snd_ws
223Window scaling factor for the TCP send window.
224.It Vt uint32_t tcps_rwnd
225TCP receive window size.
226.It Vt int32_t tcps_rcv_ws
227Window scaling factor for the TCP receive window.
228.It Vt uint32_t tcps_cwnd
229TCP congestion window size.
230.It Vt uint32_t tcps_cwnd_ssthresh
231Congestion window threshold at which slow start ends and congestion avoidance
232begins.
233.It Vt uint32_t tcps_sack_fack
234Last sequence number selectively acknowledged by the receiver.
235.It Vt uint32_t tcps_sack_snxt
236Next selectively acknowledge sequence number at which to begin retransmitting.
237.It Vt uint32_t tcps_rto
238Round-trip timeout, in milliseconds.
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