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ddb: improve show tcpcb

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Print the name of the TCP function block and the name of the
congestion control algorithm. Furthermore, print some information
related to Black Box Logging.

Reviewed by:		thj
MFC after:		1 week
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D50535
This commit is contained in:
Michael Tuexen 2025-05-28 12:10:51 +02:00
parent 969f6c6353
commit 8d4f495df4
1 changed files with 52 additions and 0 deletions
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52
sys/netinet/tcp_usrreq.c
View file

@ -3045,6 +3045,43 @@ db_print_toobflags(char t_oobflags)
}
}
static void
db_print_bblog_state(int state)
{
switch (state) {
case TCP_LOG_STATE_RATIO_OFF:
db_printf("TCP_LOG_STATE_RATIO_OFF");
break;
case TCP_LOG_STATE_CLEAR:
db_printf("TCP_LOG_STATE_CLEAR");
break;
case TCP_LOG_STATE_OFF:
db_printf("TCP_LOG_STATE_OFF");
break;
case TCP_LOG_STATE_TAIL:
db_printf("TCP_LOG_STATE_TAIL");
break;
case TCP_LOG_STATE_HEAD:
db_printf("TCP_LOG_STATE_HEAD");
break;
case TCP_LOG_STATE_HEAD_AUTO:
db_printf("TCP_LOG_STATE_HEAD_AUTO");
break;
case TCP_LOG_STATE_CONTINUAL:
db_printf("TCP_LOG_STATE_CONTINUAL");
break;
case TCP_LOG_STATE_TAIL_AUTO:
db_printf("TCP_LOG_STATE_TAIL_AUTO");
break;
case TCP_LOG_VIA_BBPOINTS:
db_printf("TCP_LOG_STATE_BBPOINTS");
break;
default:
db_printf("UNKNOWN(%d)", state);
break;
}
}
static void
db_print_tcpcb(struct tcpcb *tp, const char *name, int indent)
{
@ -3156,6 +3193,21 @@ db_print_tcpcb(struct tcpcb *tp, const char *name, int indent)
db_print_indent(indent);
db_printf("t_rttlow: %d rfbuf_ts: %u rfbuf_cnt: %d\n",
tp->t_rttlow, tp->rfbuf_ts, tp->rfbuf_cnt);
db_print_indent(indent);
db_printf("t_fb.tfb_tcp_block_name: %s\n", tp->t_fb->tfb_tcp_block_name);
db_print_indent(indent);
db_printf("t_cc.name: %s\n", tp->t_cc->name);
db_print_indent(indent);
db_printf("_t_logstate: %d (", tp->_t_logstate);
db_print_bblog_state(tp->_t_logstate);
db_printf(")\n");
db_print_indent(indent);
db_printf("t_lognum: %d t_loglimit: %d t_logsn: %u\n",
tp->t_lognum, tp->t_loglimit, tp->t_logsn);
}
DB_SHOW_COMMAND(tcpcb, db_show_tcpcb)