1 /* $NetBSD: tcp.c,v 1.5 2000/04/29 04:36:16 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1999 Andy Doran <ad@NetBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #include <sys/cdefs.h> 31 #ifndef lint 32 __RCSID("$NetBSD: tcp.c,v 1.5 2000/04/29 04:36:16 matt Exp $"); 33 #endif /* not lint */ 34 35 #include <sys/param.h> 36 #include <sys/types.h> 37 #include <sys/socket.h> 38 #include <sys/sysctl.h> 39 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netinet/ip_var.h> 44 #include <netinet/tcp.h> 45 #include <netinet/tcp_seq.h> 46 #include <netinet/tcp_fsm.h> 47 #include <netinet/tcp_timer.h> 48 #include <netinet/tcp_var.h> 49 50 #include <stdlib.h> 51 #include <string.h> 52 #include <paths.h> 53 #include <nlist.h> 54 #include <kvm.h> 55 56 #include "systat.h" 57 #include "extern.h" 58 59 #define LHD(row, str) mvwprintw(wnd, row, 10, str) 60 #define RHD(row, str) mvwprintw(wnd, row, 45, str) 61 #define SHOW(row, col, stat) mvwprintw(wnd, row, col, "%9llu", (unsigned long long) curstat.stat) 62 63 static struct tcpstat curstat, oldstat; 64 65 static struct nlist namelist[] = { 66 { "_tcpstat" }, 67 { "" } 68 }; 69 70 WINDOW * 71 opentcp(void) 72 { 73 74 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 75 } 76 77 void 78 closetcp(w) 79 WINDOW *w; 80 { 81 82 if (w != NULL) { 83 wclear(w); 84 wrefresh(w); 85 delwin(w); 86 } 87 } 88 89 void 90 labeltcp(void) 91 { 92 93 wmove(wnd, 0, 0); wclrtoeol(wnd); 94 95 LHD(0, "connections initiated"); 96 LHD(1, "connections accepted"); 97 LHD(2, "connections established"); 98 99 LHD(4, "connections dropped"); 100 LHD(5, " in embryonic state"); 101 LHD(6, " on retransmit timeout"); 102 LHD(7, " by keepalive"); 103 LHD(8, " by persist"); 104 105 LHD(10, "potential rtt updates"); 106 LHD(11, "successful rtt updates"); 107 LHD(12, "delayed acks sent"); 108 LHD(13, "retransmit timeouts"); 109 LHD(14, "persist timeouts"); 110 LHD(15, "keepalive probes"); 111 LHD(16, "keepalive timeouts"); 112 113 RHD(9, "total TCP packets received"); 114 RHD(10, " in sequence"); 115 RHD(11, " completely duplicate"); 116 RHD(12, " with some duplicate data"); 117 RHD(13, " out of order"); 118 RHD(14, " duplicate acks"); 119 RHD(15, " acks"); 120 RHD(16, " window probes"); 121 RHD(17, " window updates"); 122 123 RHD(0, "total TCP packets sent"); 124 RHD(1, " data"); 125 RHD(2, " data (retransmit)"); 126 RHD(3, " ack-only"); 127 RHD(4, " window probes"); 128 RHD(5, " window updates"); 129 RHD(6, " urgent data only"); 130 RHD(7, " control"); 131 } 132 133 void 134 showtcpsyn(void) 135 { 136 137 SHOW(0, 0, tcps_sc_added); 138 SHOW(1, 0, tcps_sc_completed); 139 SHOW(2, 0, tcps_sc_timed_out); 140 SHOW(3, 0, tcps_sc_dupesyn); 141 SHOW(4, 0, tcps_sc_collisions); 142 SHOW(5, 0, tcps_sc_retransmitted); 143 SHOW(6, 0, tcps_sc_aborted); 144 SHOW(7, 0, tcps_sc_overflowed); 145 SHOW(8, 0, tcps_sc_reset); 146 SHOW(9, 0, tcps_sc_unreach); 147 SHOW(10, 0, tcps_sc_bucketoverflow); 148 SHOW(11, 0, tcps_sc_dropped); 149 } 150 151 void 152 labeltcpsyn(void) 153 { 154 155 wmove(wnd, 0, 0); wclrtoeol(wnd); 156 LHD(0, "entries added"); 157 LHD(1, "connections completed"); 158 LHD(2, "entries timed out"); 159 LHD(3, "duplicate SYNs recieved"); 160 LHD(4, "hash collisions"); 161 LHD(5, "retransmissions"); 162 LHD(6, "entries aborted (no memory)"); 163 LHD(7, "dropped (overflow)"); 164 LHD(8, "dropped (RST)"); 165 LHD(9, "dropped (ICMP UNRCH)"); 166 LHD(10, "dropped (bucket overflow)"); 167 LHD(11, "dropped (unreachable/no memory)"); 168 } 169 170 void 171 showtcp(void) 172 { 173 174 SHOW(0, 0, tcps_connattempt); 175 SHOW(1, 0, tcps_accepts); 176 SHOW(2, 0, tcps_connects); 177 178 SHOW(4, 0, tcps_drops); 179 SHOW(5, 0, tcps_conndrops); 180 SHOW(6, 0, tcps_timeoutdrop); 181 SHOW(7, 0, tcps_keepdrops); 182 SHOW(8, 0, tcps_persistdrops); 183 184 SHOW(10, 0, tcps_segstimed); 185 SHOW(11, 0, tcps_rttupdated); 186 SHOW(12, 0, tcps_delack); 187 SHOW(13, 0, tcps_rexmttimeo); 188 SHOW(14, 0, tcps_persisttimeo); 189 SHOW(15, 0, tcps_keepprobe); 190 SHOW(16, 0, tcps_keeptimeo); 191 192 SHOW(0, 35, tcps_sndtotal); 193 SHOW(1, 35, tcps_sndpack); 194 SHOW(2, 35, tcps_sndrexmitpack); 195 196 SHOW(3, 35, tcps_sndacks); 197 SHOW(4, 35, tcps_sndprobe); 198 SHOW(5, 35, tcps_sndwinup); 199 SHOW(6, 35, tcps_sndurg); 200 SHOW(7, 35, tcps_sndctrl); 201 202 SHOW(9, 35, tcps_rcvtotal); 203 SHOW(10, 35, tcps_rcvpack); 204 SHOW(11, 35, tcps_rcvduppack); 205 SHOW(12, 35, tcps_rcvpartduppack); 206 SHOW(13, 35, tcps_rcvoopack); 207 SHOW(14, 35, tcps_rcvdupack); 208 SHOW(15, 35, tcps_rcvackpack); 209 SHOW(16, 35, tcps_rcvwinprobe); 210 SHOW(17, 35, tcps_rcvwinupd); 211 } 212 213 int 214 inittcp(void) 215 { 216 217 if (namelist[0].n_type == 0) { 218 if (kvm_nlist(kd, namelist)) { 219 nlisterr(namelist); 220 return(0); 221 } 222 if (namelist[0].n_type == 0) { 223 error("No namelist"); 224 return(0); 225 } 226 } 227 return 1; 228 } 229 230 void 231 fetchtcp(void) 232 { 233 234 oldstat = curstat; 235 KREAD((void *)namelist[0].n_value, &curstat, sizeof(curstat)); 236 } 237