D50516.diff
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	diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4
	--- a/share/man/man4/ddb.4
	+++ b/share/man/man4/ddb.4
	@@ -24,7 +24,7 @@
	.\" any improvements or extensions that they make and grant Carnegie Mellon
	.\" the rights to redistribute these changes.
	.\"
	-.Dd May 24, 2025
	+.Dd May 28, 2025
	.Dt DDB 4
	.Os
	.Sh NAME
	@@ -604,6 +604,14 @@
	modifier will print command line arguments for each process.
	.\"
	.Pp
	+.It Ic show Cm all tcpcbs Ns Op Li / Ns Cm l
	+Show the same output as "show tcpcb" does, but for all
	+TCP control blocks within the system.
	+Using the
	+.Cm l
	+modifier will limit the output to TCP control blocks, which are locked.
	+.\"
	+.Pp
	.It Ic show Cm all trace
	.It Ic alltrace
	Show a stack trace for every thread in the system.
	diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
	--- a/sys/netinet/tcp_usrreq.c
	+++ b/sys/netinet/tcp_usrreq.c
	@@ -3222,4 +3222,27 @@

	db_print_tcpcb(tp, "tcpcb", 0);
	}
	+
	+DB_SHOW_ALL_COMMAND(tcpcbs, db_show_all_tcpcbs)
	+{
	+ VNET_ITERATOR_DECL(vnet_iter);
	+ struct inpcb *inp;
	+ bool only_locked;
	+
	+ only_locked = strchr(modif, 'l') != NULL;
	+ VNET_FOREACH(vnet_iter) {
	+ CURVNET_SET(vnet_iter);
	+ CK_LIST_FOREACH(inp, &V_tcbinfo.ipi_listhead, inp_list) {
	+ if (only_locked &&
	+ inp->inp_lock.rw_lock == RW_UNLOCKED)
	+ continue;
	+ db_print_tcpcb(intotcpcb(inp), "tcpcb", 0);
	+ if (db_pager_quit)
	+ break;
	+ }
	+ CURVNET_RESTORE();
	+ if (db_pager_quit)
	+ break;
	+ }
	+}
	#endif