265 lines
6.2 KiB
C
265 lines
6.2 KiB
C
/* $NetBSD: tcp.c,v 1.16 2014/06/03 22:22:41 joerg Exp $ */
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/*
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* Copyright (c) 1999, 2000 Andrew Doran <ad@NetBSD.org>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: tcp.c,v 1.16 2014/06/03 22:22:41 joerg Exp $");
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#endif /* not lint */
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#include <sys/param.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/ip_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <string.h>
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#include "systat.h"
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#include "extern.h"
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#define LHD(row, str) mvwprintw(wnd, row, 10, str)
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#define RHD(row, str) mvwprintw(wnd, row, 45, str)
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#define SHOW(row, col, stat) \
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mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat[stat])
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enum update {
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UPDATE_TIME,
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UPDATE_BOOT,
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UPDATE_RUN,
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};
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static enum update update = UPDATE_TIME;
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static uint64_t curstat[TCP_NSTATS];
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static uint64_t newstat[TCP_NSTATS];
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static uint64_t oldstat[TCP_NSTATS];
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WINDOW *
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opentcp(void)
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{
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return (subwin(stdscr, -1, 0, 5, 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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wclear(w);
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wrefresh(w);
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delwin(w);
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}
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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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LHD(0, "connections initiated");
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LHD(1, "connections accepted");
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LHD(2, "connections established");
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LHD(4, "connections dropped");
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LHD(5, " in embryonic state");
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LHD(6, " on retransmit timeout");
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LHD(7, " by keepalive");
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LHD(8, " by persist");
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LHD(10, "potential rtt updates");
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LHD(11, "successful rtt updates");
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LHD(12, "delayed acks sent");
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LHD(13, "retransmit timeouts");
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LHD(14, "persist timeouts");
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LHD(15, "keepalive probes");
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LHD(16, "keepalive timeouts");
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RHD(9, "total TCP packets received");
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RHD(10, " in sequence");
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RHD(11, " completely duplicate");
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RHD(12, " with some duplicate data");
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RHD(13, " out of order");
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RHD(14, " duplicate acks");
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RHD(15, " acks");
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RHD(16, " window probes");
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RHD(17, " window updates");
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RHD(0, "total TCP packets sent");
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RHD(1, " data");
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RHD(2, " data (retransmit)");
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RHD(3, " ack-only");
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RHD(4, " window probes");
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RHD(5, " window updates");
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RHD(6, " urgent data only");
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RHD(7, " control");
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}
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void
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showtcpsyn(void)
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{
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SHOW(0, 0, TCP_STAT_SC_ADDED);
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SHOW(1, 0, TCP_STAT_SC_COMPLETED);
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SHOW(2, 0, TCP_STAT_SC_TIMED_OUT);
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SHOW(3, 0, TCP_STAT_SC_DUPESYN);
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SHOW(4, 0, TCP_STAT_SC_COLLISIONS);
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SHOW(5, 0, TCP_STAT_SC_RETRANSMITTED);
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SHOW(6, 0, TCP_STAT_SC_ABORTED);
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SHOW(7, 0, TCP_STAT_SC_OVERFLOWED);
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SHOW(8, 0, TCP_STAT_SC_RESET);
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SHOW(9, 0, TCP_STAT_SC_UNREACH);
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SHOW(10, 0, TCP_STAT_SC_BUCKETOVERFLOW);
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SHOW(11, 0, TCP_STAT_SC_DROPPED);
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}
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void
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labeltcpsyn(void)
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{
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wmove(wnd, 0, 0); wclrtoeol(wnd);
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LHD(0, "entries added");
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LHD(1, "connections completed");
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LHD(2, "entries timed out");
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LHD(3, "duplicate SYNs received");
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LHD(4, "hash collisions");
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LHD(5, "retransmissions");
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LHD(6, "entries aborted (no memory)");
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LHD(7, "dropped (overflow)");
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LHD(8, "dropped (RST)");
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LHD(9, "dropped (ICMP UNRCH)");
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LHD(10, "dropped (bucket overflow)");
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LHD(11, "dropped (unreachable/no memory)");
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}
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void
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showtcp(void)
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{
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SHOW(0, 0, TCP_STAT_CONNATTEMPT);
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SHOW(1, 0, TCP_STAT_ACCEPTS);
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SHOW(2, 0, TCP_STAT_CONNECTS);
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SHOW(4, 0, TCP_STAT_DROPS);
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SHOW(5, 0, TCP_STAT_CONNDROPS);
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SHOW(6, 0, TCP_STAT_TIMEOUTDROP);
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SHOW(7, 0, TCP_STAT_KEEPDROPS);
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SHOW(8, 0, TCP_STAT_PERSISTDROPS);
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SHOW(10, 0, TCP_STAT_SEGSTIMED);
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SHOW(11, 0, TCP_STAT_RTTUPDATED);
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SHOW(12, 0, TCP_STAT_DELACK);
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SHOW(13, 0, TCP_STAT_REXMTTIMEO);
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SHOW(14, 0, TCP_STAT_PERSISTTIMEO);
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SHOW(15, 0, TCP_STAT_KEEPPROBE);
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SHOW(16, 0, TCP_STAT_KEEPTIMEO);
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SHOW(0, 35, TCP_STAT_SNDTOTAL);
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SHOW(1, 35, TCP_STAT_SNDPACK);
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SHOW(2, 35, TCP_STAT_SNDREXMITPACK);
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SHOW(3, 35, TCP_STAT_SNDACKS);
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SHOW(4, 35, TCP_STAT_SNDPROBE);
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SHOW(5, 35, TCP_STAT_SNDWINUP);
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SHOW(6, 35, TCP_STAT_SNDURG);
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SHOW(7, 35, TCP_STAT_SNDCTRL);
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SHOW(9, 35, TCP_STAT_RCVTOTAL);
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SHOW(10, 35, TCP_STAT_RCVPACK);
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SHOW(11, 35, TCP_STAT_RCVDUPPACK);
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SHOW(12, 35, TCP_STAT_RCVPARTDUPPACK);
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SHOW(13, 35, TCP_STAT_RCVOOPACK);
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SHOW(14, 35, TCP_STAT_RCVDUPACK);
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SHOW(15, 35, TCP_STAT_RCVACKPACK);
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SHOW(16, 35, TCP_STAT_RCVWINPROBE);
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SHOW(17, 35, TCP_STAT_RCVWINUPD);
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}
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int
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inittcp(void)
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{
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return 1;
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}
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void
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fetchtcp(void)
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{
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size_t i, size = sizeof(newstat);
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if (sysctlbyname("net.inet.tcp.stats", newstat, &size, NULL, 0) == -1)
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return;
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for (i = 0; i < TCP_NSTATS; i++)
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xADJINETCTR(curstat, oldstat, newstat, i);
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if (update == UPDATE_TIME)
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memcpy(oldstat, newstat, sizeof(oldstat));
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}
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void
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tcp_boot(char *args)
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{
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memset(oldstat, 0, sizeof(oldstat));
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update = UPDATE_BOOT;
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}
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void
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tcp_run(char *args)
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{
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if (update != UPDATE_RUN) {
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memcpy(oldstat, newstat, sizeof(oldstat));
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update = UPDATE_RUN;
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}
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}
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void
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tcp_time(char *args)
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{
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if (update != UPDATE_TIME) {
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memcpy(oldstat, newstat, sizeof(oldstat));
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update = UPDATE_TIME;
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}
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}
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void
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tcp_zero(char *args)
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{
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if (update == UPDATE_RUN)
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memcpy(oldstat, newstat, sizeof(oldstat));
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}
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