8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
329 lines
9.3 KiB
C
329 lines
9.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1980, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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#ifndef lint
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/* From: */
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static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93";
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static const char rcsid[] =
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"Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_seq.h>
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <stdlib.h>
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#include <string.h>
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#include <paths.h>
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#include "systat.h"
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#include "extern.h"
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#include "mode.h"
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static struct tcpstat curstat, initstat, oldstat;
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/*-
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--0 1 2 3 4 5 6 7
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--0123456789012345678901234567890123456789012345678901234567890123456789012345
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00 TCP Connections TCP Packets
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01999999999999 connections initiated 999999999999 total packets sent
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02999999999999 connections accepted 999999999999 - data
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03999999999999 connections established 999999999999 - data (retransmit by dupack)
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04999999999999 connections dropped 999999999999 - data (retransmit by sack)
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05999999999999 - in embryonic state 999999999999 - ack-only
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06999999999999 - on retransmit timeout 999999999999 - window probes
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07999999999999 - by keepalive 999999999999 - window updates
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08999999999999 - from listen queue 999999999999 - urgent data only
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09 999999999999 - control
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10 999999999999 - resends by PMTU discovery
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11 TCP Timers 999999999999 total packets received
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12999999999999 potential rtt updates 999999999999 - in sequence
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13999999999999 - successful 999999999999 - completely duplicate
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14999999999999 delayed acks sent 999999999999 - with some duplicate data
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15999999999999 retransmit timeouts 999999999999 - out-of-order
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16999999999999 persist timeouts 999999999999 - duplicate acks
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17999999999999 keepalive probes 999999999999 - acks
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18999999999999 - timeouts 999999999999 - window probes
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19 999999999999 - window updates
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20 999999999999 - bad checksum
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--0123456789012345678901234567890123456789012345678901234567890123456789012345
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--0 1 2 3 4 5 6 7
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*/
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WINDOW *
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opentcp(void)
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{
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return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
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}
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void
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closetcp(WINDOW *w)
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{
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if (w == NULL)
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return;
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wclear(w);
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wrefresh(w);
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delwin(w);
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}
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void
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labeltcp(void)
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{
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wmove(wnd, 0, 0); wclrtoeol(wnd);
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#define L(row, str) mvwprintw(wnd, row, 13, str)
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#define R(row, str) mvwprintw(wnd, row, 51, str);
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L(0, "TCP Connections"); R(0, "TCP Packets");
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L(1, "connections initiated"); R(1, "total packets sent");
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L(2, "connections accepted"); R(2, "- data");
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L(3, "connections established"); R(3, "- data (retransmit by dupack)");
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L(4, "connections dropped"); R(4, "- data (retransmit by sack)");
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L(5, "- in embryonic state"); R(5, "- ack-only");
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L(6, "- on retransmit timeout"); R(6, "- window probes");
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L(7, "- by keepalive"); R(7, "- window updates");
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L(8, "- from listen queue"); R(8, "- urgent data only");
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R(9, "- control");
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R(10, "- resends by PMTU discovery");
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L(11, "TCP Timers"); R(11, "total packets received");
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L(12, "potential rtt updates"); R(12, "- in sequence");
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L(13, "- successful"); R(13, "- completely duplicate");
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L(14, "delayed acks sent"); R(14, "- with some duplicate data");
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L(15, "retransmit timeouts"); R(15, "- out-of-order");
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L(16, "persist timeouts"); R(16, "- duplicate acks");
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L(17, "keepalive probes"); R(17, "- acks");
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L(18, "- timeouts"); R(18, "- window probes");
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R(19, "- window updates");
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R(20, "- bad checksum");
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#undef L
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#undef R
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}
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static void
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domode(struct tcpstat *ret)
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{
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const struct tcpstat *sub;
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int divisor = 1;
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switch(currentmode) {
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case display_RATE:
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sub = &oldstat;
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divisor = (delay > 1000000) ? delay / 1000000 : 1;
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break;
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case display_DELTA:
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sub = &oldstat;
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break;
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case display_SINCE:
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sub = &initstat;
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break;
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default:
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*ret = curstat;
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return;
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}
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#define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor
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DO(tcps_connattempt);
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DO(tcps_accepts);
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DO(tcps_connects);
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DO(tcps_drops);
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DO(tcps_conndrops);
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DO(tcps_closed);
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DO(tcps_segstimed);
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DO(tcps_rttupdated);
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DO(tcps_delack);
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DO(tcps_timeoutdrop);
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DO(tcps_rexmttimeo);
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DO(tcps_persisttimeo);
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DO(tcps_keeptimeo);
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DO(tcps_keepprobe);
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DO(tcps_keepdrops);
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DO(tcps_sndtotal);
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DO(tcps_sndpack);
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DO(tcps_sndbyte);
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DO(tcps_sndrexmitpack);
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DO(tcps_sack_rexmits);
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DO(tcps_sndacks);
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DO(tcps_sndprobe);
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DO(tcps_sndurg);
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DO(tcps_sndwinup);
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DO(tcps_sndctrl);
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DO(tcps_rcvtotal);
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DO(tcps_rcvpack);
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DO(tcps_rcvbyte);
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DO(tcps_rcvbadsum);
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DO(tcps_rcvbadoff);
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DO(tcps_rcvshort);
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DO(tcps_rcvduppack);
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DO(tcps_rcvdupbyte);
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DO(tcps_rcvpartduppack);
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DO(tcps_rcvpartdupbyte);
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DO(tcps_rcvoopack);
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DO(tcps_rcvoobyte);
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DO(tcps_rcvpackafterwin);
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DO(tcps_rcvbyteafterwin);
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DO(tcps_rcvafterclose);
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DO(tcps_rcvwinprobe);
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DO(tcps_rcvdupack);
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DO(tcps_rcvacktoomuch);
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DO(tcps_rcvackpack);
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DO(tcps_rcvackbyte);
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DO(tcps_rcvwinupd);
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DO(tcps_pawsdrop);
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DO(tcps_predack);
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DO(tcps_preddat);
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DO(tcps_pcbcachemiss);
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DO(tcps_cachedrtt);
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DO(tcps_cachedrttvar);
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DO(tcps_cachedssthresh);
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DO(tcps_usedrtt);
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DO(tcps_usedrttvar);
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DO(tcps_usedssthresh);
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DO(tcps_persistdrop);
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DO(tcps_badsyn);
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DO(tcps_mturesent);
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DO(tcps_listendrop);
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#undef DO
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}
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void
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showtcp(void)
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{
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struct tcpstat stats;
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memset(&stats, 0, sizeof stats);
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domode(&stats);
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#define DO(stat, row, col) \
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mvwprintw(wnd, row, col, "%12lu", stats.stat)
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#define L(row, stat) DO(stat, row, 0)
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#define R(row, stat) DO(stat, row, 38)
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L(1, tcps_connattempt); R(1, tcps_sndtotal);
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L(2, tcps_accepts); R(2, tcps_sndpack);
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L(3, tcps_connects); R(3, tcps_sndrexmitpack);
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L(4, tcps_drops); R(4, tcps_sack_rexmits);
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L(5, tcps_conndrops); R(5, tcps_sndacks);
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L(6, tcps_timeoutdrop); R(6, tcps_sndprobe);
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L(7, tcps_keepdrops); R(7, tcps_sndwinup);
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L(8, tcps_listendrop); R(8, tcps_sndurg);
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R(9, tcps_sndctrl);
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R(10, tcps_mturesent);
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R(11, tcps_rcvtotal);
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L(12, tcps_segstimed); R(12, tcps_rcvpack);
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L(13, tcps_rttupdated); R(13, tcps_rcvduppack);
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L(14, tcps_delack); R(14, tcps_rcvpartduppack);
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L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack);
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L(16, tcps_persisttimeo); R(16, tcps_rcvdupack);
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L(17, tcps_keepprobe); R(17, tcps_rcvackpack);
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L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe);
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R(19, tcps_rcvwinupd);
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R(20, tcps_rcvbadsum);
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#undef DO
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#undef L
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#undef R
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}
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int
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inittcp(void)
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{
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size_t len;
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int name[4];
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name[0] = CTL_NET;
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name[1] = PF_INET;
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name[2] = IPPROTO_TCP;
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name[3] = TCPCTL_STATS;
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len = 0;
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if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
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error("sysctl getting tcpstat size failed");
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return 0;
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}
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if (len > sizeof curstat) {
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error("tcpstat structure has grown--recompile systat!");
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return 0;
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}
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if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) {
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error("sysctl getting tcpstat failed");
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return 0;
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}
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oldstat = initstat;
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return 1;
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}
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void
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resettcp(void)
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{
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size_t len;
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int name[4];
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name[0] = CTL_NET;
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name[1] = PF_INET;
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name[2] = IPPROTO_TCP;
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name[3] = TCPCTL_STATS;
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len = sizeof initstat;
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if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) {
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error("sysctl getting tcpstat failed");
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}
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oldstat = initstat;
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}
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void
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fetchtcp(void)
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{
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int name[4];
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size_t len;
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oldstat = curstat;
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name[0] = CTL_NET;
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name[1] = PF_INET;
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name[2] = IPPROTO_TCP;
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name[3] = TCPCTL_STATS;
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len = sizeof curstat;
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if (sysctl(name, 4, &curstat, &len, 0, 0) < 0)
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return;
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}
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