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man: improve man pages for dtrace_sctp and dtrace_tcp

Browse source 
Reviewed by:		manpages
MFC after:		3 days
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D40796
This commit is contained in:
Michael Tuexen 2023-06-29 14:53:56 +02:00
parent 24ec316c13
commit 81b4bf0895
2 changed files with 10 additions and 10 deletions
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14
share/man/man4/dtrace_sctp.4
View file

@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd August 22, 2018
.Dd June 29, 2023
.Dt DTRACE_SCTP 4
.Os
.Sh NAME
@ -150,20 +150,20 @@ A script that logs SCTP packets in real time:
dtrace:::BEGIN
{
printf(" %3s %15s:%-5s %15s:%-5s\n", "CPU",
printf(" %3s %15s:%-5s %15s:%-5s\\n", "CPU",
"LADDR", "LPORT", "RADDR", "RPORT");
}
sctp:::send
{
printf(" %3d %16s:%-5d -> %16s:%-5d\n", cpu,
printf(" %3d %16s:%-5d -> %16s:%-5d\\n", cpu,
args[2]->ip_saddr, args[4]->sctp_sport,
args[2]->ip_daddr, args[4]->sctp_dport);
}
sctp:::receive
{
printf(" %3d %16s:%-5d <- %16s:%-5d\n", cpu,
printf(" %3d %16s:%-5d <- %16s:%-5d\\n", cpu,
args[2]->ip_daddr, args[4]->sctp_dport,
args[2]->ip_saddr, args[4]->sctp_sport);
}
@ -177,7 +177,7 @@ int last[int];
dtrace:::BEGIN
{
printf(" %3s %12s %-25s %-25s\n",
printf(" %3s %12s %-25s %-25s\\n",
"CPU", "DELTA(us)", "OLD", "NEW");
}
@ -185,7 +185,7 @@ sctp:::state-change
/ last[args[1]->cs_cid] /
{
this->elapsed = (timestamp - last[args[1]->cs_cid]) / 1000;
printf(" %3d %12d %-25s -> %-25s\n", cpu, this->elapsed,
printf(" %3d %12d %-25s -> %-25s\\n", cpu, this->elapsed,
sctp_state_string[args[5]->sctps_state],
sctp_state_string[args[3]->sctps_state]);
last[args[1]->cs_cid] = timestamp;
@ -194,7 +194,7 @@ sctp:::state-change
sctp:::state-change
/ last[args[1]->cs_cid] == 0 /
{
printf(" %3d %12s %-25s -> %-25s\n", cpu, "-",
printf(" %3d %12s %-25s -> %-25s\\n", cpu, "-",
sctp_state_string[args[5]->sctps_state],
sctp_state_string[args[3]->sctps_state]);
last[args[1]->cs_cid] = timestamp;

6
share/man/man4/dtrace_tcp.4
View file

@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd August 1, 2018
.Dd June 29, 2023
.Dt DTRACE_TCP 4
.Os
.Sh NAME
@ -317,7 +317,7 @@ tcp:::send
printf("%s", args[4]->tcp_flags & TH_ACK ? "ACK|" : "");
printf("%s", args[4]->tcp_flags & TH_URG ? "URG|" : "");
printf("%s", args[4]->tcp_flags == 0 ? "null " : "");
printf("\b)\\n");
printf("\\b)\\n");
}
tcp:::receive
@ -333,7 +333,7 @@ tcp:::receive
printf("%s", args[4]->tcp_flags & TH_ACK ? "ACK|" : "");
printf("%s", args[4]->tcp_flags & TH_URG ? "URG|" : "");
printf("%s", args[4]->tcp_flags == 0 ? "null " : "");
printf("\b)\\n");
printf("\\b)\\n");
}
.Ed
The following script logs TCP connection state changes as they occur: