/* $NetBSD: inet.c,v 1.63 2004/09/06 14:51:32 martin Exp $ */ /* * Copyright (c) 1983, 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #ifndef lint #if 0 static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94"; #else __RCSID("$NetBSD: inet.c,v 1.63 2004/09/06 14:51:32 martin Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET6 #include #endif #include #include #include #include #include #include #include #define TCPSTATES #include #define TCPTIMERS #include #include #include #include #include #include #include #include #include #include #include "netstat.h" struct inpcb inpcb; struct tcpcb tcpcb; struct socket sockb; char *inetname __P((struct in_addr *)); void inetprint __P((struct in_addr *, u_int16_t, const char *, int)); /* * Print a summary of connections related to an Internet * protocol. For TCP, also give state of connection. * Listening processes (aflag) are suppressed unless the * -a (all) flag is specified. */ static int width; void protopr(off, name) u_long off; char *name; { struct inpcbtable table; struct inpcb *head, *next, *prev; struct inpcb inpcb; int istcp, compact; static int first = 1; static char *shorttcpstates[] = { "CLOSED", "LISTEN", "SYNSEN", "SYSRCV", "ESTABL", "CLWAIT", "FWAIT1", "CLOSNG", "LASTAK", "FWAIT2", "TMWAIT", }; if (off == 0) return; istcp = strcmp(name, "tcp") == 0; kread(off, (char *)&table, sizeof table); prev = head = (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; next = (struct inpcb *)table.inpt_queue.cqh_first; compact = 0; if (Aflag) { if (!numeric_addr) width = 18; else { width = 21; compact = 1; } } else width = 22; while (next != head) { kread((u_long)next, (char *)&inpcb, sizeof inpcb); if ((struct inpcb *)inpcb.inp_queue.cqe_prev != prev) { printf("???\n"); break; } prev = next; next = (struct inpcb *)inpcb.inp_queue.cqe_next; if (inpcb.inp_af != AF_INET) continue; if (!aflag && inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) continue; kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb)); if (istcp) { kread((u_long)inpcb.inp_ppcb, (char *)&tcpcb, sizeof (tcpcb)); } if (first) { printf("Active Internet connections"); if (aflag) printf(" (including servers)"); putchar('\n'); if (Aflag) printf("%-8.8s ", "PCB"); printf("%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %s\n", "Proto", "Recv-Q", "Send-Q", compact ? "" : " ", width, width, "Local Address", width, width, "Foreign Address", "State"); first = 0; } if (Aflag) { if (istcp) printf("%8lx ", (u_long) inpcb.inp_ppcb); else printf("%8lx ", (u_long) prev); } printf("%-5.5s %6ld %6ld%s", name, sockb.so_rcv.sb_cc, sockb.so_snd.sb_cc, compact ? "" : " "); if (numeric_port) { inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 1); } else if (inpcb.inp_flags & INP_ANONPORT) { inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 0); } else { inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 0); inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 0); } if (istcp) { if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) printf(" %d", tcpcb.t_state); else printf(" %s", compact ? shorttcpstates[tcpcb.t_state] : tcpstates[tcpcb.t_state]); } putchar('\n'); } } /* * Dump TCP statistics structure. */ void tcp_stats(off, name) u_long off; char *name; { struct tcpstat tcpstat; if (off == 0) return; printf ("%s:\n", name); kread(off, (char *)&tcpstat, sizeof (tcpstat)); #define ps(f, m) if (tcpstat.f || sflag <= 1) \ printf(m, (unsigned long long)tcpstat.f) #define p(f, m) if (tcpstat.f || sflag <= 1) \ printf(m, (unsigned long long)tcpstat.f, plural(tcpstat.f)) #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \ (unsigned long long)tcpstat.f2, plural(tcpstat.f2)) #define p2s(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \ (unsigned long long)tcpstat.f2) #define p3(f, m) if (tcpstat.f || sflag <= 1) \ printf(m, (unsigned long long)tcpstat.f, plurales(tcpstat.f)) p(tcps_sndtotal, "\t%llu packet%s sent\n"); p2(tcps_sndpack,tcps_sndbyte, "\t\t%llu data packet%s (%llu byte%s)\n"); p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, "\t\t%llu data packet%s (%llu byte%s) retransmitted\n"); p2s(tcps_sndacks, tcps_delack, "\t\t%llu ack-only packet%s (%llu delayed)\n"); p(tcps_sndurg, "\t\t%llu URG only packet%s\n"); p(tcps_sndprobe, "\t\t%llu window probe packet%s\n"); p(tcps_sndwinup, "\t\t%llu window update packet%s\n"); p(tcps_sndctrl, "\t\t%llu control packet%s\n"); p(tcps_selfquench, "\t\t%llu send attempt%s resulted in self-quench\n"); p(tcps_rcvtotal, "\t%llu packet%s received\n"); p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%llu ack%s (for %llu byte%s)\n"); p(tcps_rcvdupack, "\t\t%llu duplicate ack%s\n"); p(tcps_rcvacktoomuch, "\t\t%llu ack%s for unsent data\n"); p2(tcps_rcvpack, tcps_rcvbyte, "\t\t%llu packet%s (%llu byte%s) received in-sequence\n"); p2(tcps_rcvduppack, tcps_rcvdupbyte, "\t\t%llu completely duplicate packet%s (%llu byte%s)\n"); p(tcps_pawsdrop, "\t\t%llu old duplicate packet%s\n"); p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, "\t\t%llu packet%s with some dup. data (%llu byte%s duped)\n"); p2(tcps_rcvoopack, tcps_rcvoobyte, "\t\t%llu out-of-order packet%s (%llu byte%s)\n"); p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, "\t\t%llu packet%s (%llu byte%s) of data after window\n"); p(tcps_rcvwinprobe, "\t\t%llu window probe%s\n"); p(tcps_rcvwinupd, "\t\t%llu window update packet%s\n"); p(tcps_rcvafterclose, "\t\t%llu packet%s received after close\n"); p(tcps_rcvbadsum, "\t\t%llu discarded for bad checksum%s\n"); p(tcps_rcvbadoff, "\t\t%llu discarded for bad header offset field%s\n"); ps(tcps_rcvshort, "\t\t%llu discarded because packet too short\n"); p(tcps_connattempt, "\t%llu connection request%s\n"); p(tcps_accepts, "\t%llu connection accept%s\n"); p(tcps_connects, "\t%llu connection%s established (including accepts)\n"); p2(tcps_closed, tcps_drops, "\t%llu connection%s closed (including %llu drop%s)\n"); p(tcps_conndrops, "\t%llu embryonic connection%s dropped\n"); p(tcps_delayed_free, "\t%llu delayed free%s of tcpcb\n"); p2(tcps_rttupdated, tcps_segstimed, "\t%llu segment%s updated rtt (of %llu attempt%s)\n"); p(tcps_rexmttimeo, "\t%llu retransmit timeout%s\n"); p(tcps_timeoutdrop, "\t\t%llu connection%s dropped by rexmit timeout\n"); p2(tcps_persisttimeo, tcps_persistdrops, "\t%llu persist timeout%s (resulting in %llu dropped " "connection%s)\n"); p(tcps_keeptimeo, "\t%llu keepalive timeout%s\n"); p(tcps_keepprobe, "\t\t%llu keepalive probe%s sent\n"); p(tcps_keepdrops, "\t\t%llu connection%s dropped by keepalive\n"); p(tcps_predack, "\t%llu correct ACK header prediction%s\n"); p(tcps_preddat, "\t%llu correct data packet header prediction%s\n"); p3(tcps_pcbhashmiss, "\t%llu PCB hash miss%s\n"); ps(tcps_noport, "\t%llu dropped due to no socket\n"); p(tcps_connsdrained, "\t%llu connection%s drained due to memory " "shortage\n"); p(tcps_pmtublackhole, "\t%llu PMTUD blackhole%s detected\n"); p(tcps_badsyn, "\t%llu bad connection attempt%s\n"); ps(tcps_sc_added, "\t%llu SYN cache entries added\n"); p(tcps_sc_collisions, "\t\t%llu hash collision%s\n"); ps(tcps_sc_completed, "\t\t%llu completed\n"); ps(tcps_sc_aborted, "\t\t%llu aborted (no space to build PCB)\n"); ps(tcps_sc_timed_out, "\t\t%llu timed out\n"); ps(tcps_sc_overflowed, "\t\t%llu dropped due to overflow\n"); ps(tcps_sc_bucketoverflow, "\t\t%llu dropped due to bucket overflow\n"); ps(tcps_sc_reset, "\t\t%llu dropped due to RST\n"); ps(tcps_sc_unreach, "\t\t%llu dropped due to ICMP unreachable\n"); ps(tcps_sc_delayed_free, "\t\t%llu delayed free of SYN cache " "entries\n"); p(tcps_sc_retransmitted, "\t%llu SYN,ACK%s retransmitted\n"); p(tcps_sc_dupesyn, "\t%llu duplicate SYN%s received for entries " "already in the cache\n"); p(tcps_sc_dropped, "\t%llu SYN%s dropped (no route or no space)\n"); p(tcps_badsig, "\t%llu packet%s with bad signature\n"); p(tcps_goodsig, "\t%llu packet%s with good signature\n"); #undef p #undef ps #undef p2 #undef p2s #undef p3 } /* * Dump UDP statistics structure. */ void udp_stats(off, name) u_long off; char *name; { struct udpstat udpstat; u_quad_t delivered; if (off == 0) return; printf("%s:\n", name); kread(off, (char *)&udpstat, sizeof (udpstat)); #define ps(f, m) if (udpstat.f || sflag <= 1) \ printf(m, (unsigned long long)udpstat.f) #define p(f, m) if (udpstat.f || sflag <= 1) \ printf(m, (unsigned long long)udpstat.f, plural(udpstat.f)) #define p3(f, m) if (udpstat.f || sflag <= 1) \ printf(m, (unsigned long long)udpstat.f, plurales(udpstat.f)) p(udps_ipackets, "\t%llu datagram%s received\n"); ps(udps_hdrops, "\t%llu with incomplete header\n"); ps(udps_badlen, "\t%llu with bad data length field\n"); ps(udps_badsum, "\t%llu with bad checksum\n"); ps(udps_noport, "\t%llu dropped due to no socket\n"); p(udps_noportbcast, "\t%llu broadcast/multicast datagram%s dropped due to no socket\n"); ps(udps_fullsock, "\t%llu dropped due to full socket buffers\n"); delivered = udpstat.udps_ipackets - udpstat.udps_hdrops - udpstat.udps_badlen - udpstat.udps_badsum - udpstat.udps_noport - udpstat.udps_noportbcast - udpstat.udps_fullsock; if (delivered || sflag <= 1) printf("\t%llu delivered\n", (unsigned long long)delivered); p3(udps_pcbhashmiss, "\t%llu PCB hash miss%s\n"); p(udps_opackets, "\t%llu datagram%s output\n"); #undef ps #undef p #undef p3 } /* * Dump IP statistics structure. */ void ip_stats(off, name) u_long off; char *name; { struct ipstat ipstat; if (off == 0) return; kread(off, (char *)&ipstat, sizeof (ipstat)); printf("%s:\n", name); #define ps(f, m) if (ipstat.f || sflag <= 1) \ printf(m, (unsigned long long)ipstat.f) #define p(f, m) if (ipstat.f || sflag <= 1) \ printf(m, (unsigned long long)ipstat.f, plural(ipstat.f)) p(ips_total, "\t%llu total packet%s received\n"); p(ips_badsum, "\t%llu bad header checksum%s\n"); ps(ips_toosmall, "\t%llu with size smaller than minimum\n"); ps(ips_tooshort, "\t%llu with data size < data length\n"); ps(ips_toolong, "\t%llu with length > max ip packet size\n"); ps(ips_badhlen, "\t%llu with header length < data size\n"); ps(ips_badlen, "\t%llu with data length < header length\n"); ps(ips_badoptions, "\t%llu with bad options\n"); ps(ips_badvers, "\t%llu with incorrect version number\n"); p(ips_fragments, "\t%llu fragment%s received\n"); p(ips_fragdropped, "\t%llu fragment%s dropped (dup or out of space)\n"); p(ips_rcvmemdrop, "\t%llu fragment%s dropped (out of ipqent)\n"); p(ips_badfrags, "\t%llu malformed fragment%s dropped\n"); p(ips_fragtimeout, "\t%llu fragment%s dropped after timeout\n"); p(ips_reassembled, "\t%llu packet%s reassembled ok\n"); p(ips_delivered, "\t%llu packet%s for this host\n"); p(ips_noproto, "\t%llu packet%s for unknown/unsupported protocol\n"); p(ips_forward, "\t%llu packet%s forwarded"); p(ips_fastforward, " (%llu packet%s fast forwarded)"); if (ipstat.ips_forward || sflag <= 1) putchar('\n'); p(ips_cantforward, "\t%llu packet%s not forwardable\n"); p(ips_redirectsent, "\t%llu redirect%s sent\n"); p(ips_nogif, "\t%llu packet%s no matching gif found\n"); p(ips_localout, "\t%llu packet%s sent from this host\n"); p(ips_rawout, "\t%llu packet%s sent with fabricated ip header\n"); p(ips_odropped, "\t%llu output packet%s dropped due to no bufs, etc.\n"); p(ips_noroute, "\t%llu output packet%s discarded due to no route\n"); p(ips_fragmented, "\t%llu output datagram%s fragmented\n"); p(ips_ofragments, "\t%llu fragment%s created\n"); p(ips_cantfrag, "\t%llu datagram%s that can't be fragmented\n"); p(ips_badaddr, "\t%llu datagram%s with bad address in header\n"); #undef ps #undef p } static char *icmpnames[] = { "echo reply", "#1", "#2", "destination unreachable", "source quench", "routing redirect", "alternate host address", "#7", "echo", "router advertisement", "router solicitation", "time exceeded", "parameter problem", "time stamp", "time stamp reply", "information request", "information request reply", "address mask request", "address mask reply", }; /* * Dump ICMP statistics. */ void icmp_stats(off, name) u_long off; char *name; { struct icmpstat icmpstat; int i, first; if (off == 0) return; kread(off, (char *)&icmpstat, sizeof (icmpstat)); printf("%s:\n", name); #define p(f, m) if (icmpstat.f || sflag <= 1) \ printf(m, (unsigned long long)icmpstat.f, plural(icmpstat.f)) p(icps_error, "\t%llu call%s to icmp_error\n"); p(icps_oldicmp, "\t%llu error%s not generated because old message was icmp\n"); for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) if (icmpstat.icps_outhist[i] != 0) { if (first) { printf("\tOutput histogram:\n"); first = 0; } printf("\t\t%s: %llu\n", icmpnames[i], (unsigned long long)icmpstat.icps_outhist[i]); } p(icps_badcode, "\t%llu message%s with bad code fields\n"); p(icps_tooshort, "\t%llu message%s < minimum length\n"); p(icps_checksum, "\t%llu bad checksum%s\n"); p(icps_badlen, "\t%llu message%s with bad length\n"); for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) if (icmpstat.icps_inhist[i] != 0) { if (first) { printf("\tInput histogram:\n"); first = 0; } printf("\t\t%s: %llu\n", icmpnames[i], (unsigned long long)icmpstat.icps_inhist[i]); } p(icps_reflect, "\t%llu message response%s generated\n"); p(icps_pmtuchg, "\t%llu path MTU change%s\n"); #undef p } /* * Dump IGMP statistics structure. */ void igmp_stats(off, name) u_long off; char *name; { struct igmpstat igmpstat; if (off == 0) return; kread(off, (char *)&igmpstat, sizeof (igmpstat)); printf("%s:\n", name); #define p(f, m) if (igmpstat.f || sflag <= 1) \ printf(m, (unsigned long long)igmpstat.f, plural(igmpstat.f)) #define py(f, m) if (igmpstat.f || sflag <= 1) \ printf(m, (unsigned long long)igmpstat.f, igmpstat.f != 1 ? "ies" : "y") p(igps_rcv_total, "\t%llu message%s received\n"); p(igps_rcv_tooshort, "\t%llu message%s received with too few bytes\n"); p(igps_rcv_badsum, "\t%llu message%s received with bad checksum\n"); py(igps_rcv_queries, "\t%llu membership quer%s received\n"); py(igps_rcv_badqueries, "\t%llu membership quer%s received with invalid field(s)\n"); p(igps_rcv_reports, "\t%llu membership report%s received\n"); p(igps_rcv_badreports, "\t%llu membership report%s received with invalid field(s)\n"); p(igps_rcv_ourreports, "\t%llu membership report%s received for groups to which we belong\n"); p(igps_snd_reports, "\t%llu membership report%s sent\n"); #undef p #undef py } /* * Dump PIM statistics structure. */ void pim_stats(off, name) u_long off; char *name; { struct pimstat pimstat; if (off == 0) return; if (kread(off, (char *)&pimstat, sizeof (pimstat)) != 0) { /* XXX: PIM is probably not enabled in the kernel */ return; } printf("%s:\n", name); #define p(f, m) if (pimstat.f || sflag <= 1) \ printf(m, (unsigned long long)pimstat.f, plural(pimstat.f)) p(pims_rcv_total_msgs, "\t%llu message%s received\n"); p(pims_rcv_total_bytes, "\t%llu byte%s received\n"); p(pims_rcv_tooshort, "\t%llu message%s received with too few bytes\n"); p(pims_rcv_badsum, "\t%llu message%s received with bad checksum\n"); p(pims_rcv_badversion, "\t%llu message%s received with bad version\n"); p(pims_rcv_registers_msgs, "\t%llu data register message%s received\n"); p(pims_rcv_registers_bytes, "\t%llu data register byte%s received\n"); p(pims_rcv_registers_wrongiif, "\t%llu data register message%s received on wrong iif\n"); p(pims_rcv_badregisters, "\t%llu bad register%s received\n"); p(pims_snd_registers_msgs, "\t%llu data register message%s sent\n"); p(pims_snd_registers_bytes, "\t%llu data register byte%s sent\n"); #undef p } /* * Dump the ARP statistics structure. */ void arp_stats(off, name) u_long off; char *name; { struct arpstat arpstat; if (off == 0) return; kread(off, (char *)&arpstat, sizeof (arpstat)); printf("%s:\n", name); #define ps(f, m) if (arpstat.f || sflag <= 1) \ printf(m, (unsigned long long)arpstat.f) #define p(f, m) if (arpstat.f || sflag <= 1) \ printf(m, (unsigned long long)arpstat.f, plural(arpstat.f)) p(as_sndtotal, "\t%llu packet%s sent\n"); p(as_sndreply, "\t\t%llu reply packet%s\n"); p(as_sndrequest, "\t\t%llu request packet%s\n"); p(as_rcvtotal, "\t%llu packet%s received\n"); p(as_rcvreply, "\t\t%llu reply packet%s\n"); p(as_rcvrequest, "\t\t%llu valid request packet%s\n"); p(as_rcvmcast, "\t\t%llu broadcast/multicast packet%s\n"); p(as_rcvbadproto, "\t\t%llu packet%s with unknown protocol type\n"); p(as_rcvbadlen, "\t\t%llu packet%s with bad (short) length\n"); p(as_rcvzerotpa, "\t\t%llu packet%s with null target IP address\n"); p(as_rcvzerospa, "\t\t%llu packet%s with null source IP address\n"); ps(as_rcvnoint, "\t\t%llu could not be mapped to an interface\n"); p(as_rcvlocalsha, "\t\t%llu packet%s sourced from a local hardware " "address\n"); p(as_rcvbcastsha, "\t\t%llu packet%s with a broadcast " "source hardware address\n"); p(as_rcvlocalspa, "\t\t%llu duplicate%s for a local IP address\n"); p(as_rcvoverperm, "\t\t%llu attempt%s to overwrite a static entry\n"); p(as_rcvoverint, "\t\t%llu packet%s received on wrong interface\n"); p(as_rcvover, "\t\t%llu entry%s overwritten\n"); p(as_rcvlenchg, "\t\t%llu change%s in hardware address length\n"); p(as_dfrtotal, "\t%llu packet%s deferred pending ARP resolution\n"); ps(as_dfrsent, "\t\t%llu sent\n"); ps(as_dfrdropped, "\t\t%llu dropped\n"); p(as_allocfail, "\t%llu failure%s to allocate llinfo\n"); #undef ps #undef p } /* * Pretty print an Internet address (net address + port). * Take numeric_addr and numeric_port into consideration. */ void inetprint(in, port, proto, numeric_port) struct in_addr *in; u_int16_t port; const char *proto; int numeric_port; { struct servent *sp = 0; char line[80], *cp; size_t space; (void)snprintf(line, sizeof line, "%.*s.", (Aflag && !numeric_addr) ? 12 : 16, inetname(in)); cp = strchr(line, '\0'); if (!numeric_port && port) sp = getservbyport((int)port, proto); space = sizeof line - (cp-line); if (sp || port == 0) (void)snprintf(cp, space, "%s", sp ? sp->s_name : "*"); else (void)snprintf(cp, space, "%u", ntohs(port)); (void)printf(" %-*.*s", width, width, line); } /* * Construct an Internet address representation. * If numeric_addr has been supplied, give * numeric value, otherwise try for symbolic name. */ char * inetname(inp) struct in_addr *inp; { char *cp; static char line[50]; struct hostent *hp; struct netent *np; static char domain[MAXHOSTNAMELEN + 1]; static int first = 1; if (first && !numeric_addr) { first = 0; if (gethostname(domain, sizeof domain) == 0) { domain[sizeof(domain) - 1] = '\0'; if ((cp = strchr(domain, '.'))) (void) strlcpy(domain, cp + 1, sizeof(domain)); else domain[0] = 0; } else domain[0] = 0; } cp = 0; if (!numeric_addr && inp->s_addr != INADDR_ANY) { int net = inet_netof(*inp); int lna = inet_lnaof(*inp); if (lna == INADDR_ANY) { np = getnetbyaddr(net, AF_INET); if (np) cp = np->n_name; } if (cp == 0) { hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); if (hp) { if ((cp = strchr(hp->h_name, '.')) && !strcmp(cp + 1, domain)) *cp = 0; cp = hp->h_name; } } } if (inp->s_addr == INADDR_ANY) strlcpy(line, "*", sizeof line); else if (cp) strlcpy(line, cp, sizeof line); else { inp->s_addr = ntohl(inp->s_addr); #define C(x) ((x) & 0xff) (void)snprintf(line, sizeof line, "%u.%u.%u.%u", C(inp->s_addr >> 24), C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); #undef C } return (line); } /* * Dump the contents of a TCP PCB. */ void tcp_dump(pcbaddr) u_long pcbaddr; { struct tcpcb tcpcb; int i, hardticks; kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb)); hardticks = get_hardticks(); printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr); printf("Timers:\n"); for (i = 0; i < TCPT_NTIMERS; i++) { printf("\t%s: %d", tcptimers[i], (tcpcb.t_timer[i].c_flags & CALLOUT_PENDING) ? tcpcb.t_timer[i].c_time - hardticks : 0); } printf("\n\n"); if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) printf("State: %d", tcpcb.t_state); else printf("State: %s", tcpstates[tcpcb.t_state]); printf(", flags 0x%x, inpcb 0x%lx, in6pcb 0x%lx\n\n", tcpcb.t_flags, (u_long)tcpcb.t_inpcb, (u_long)tcpcb.t_in6pcb); printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift, tcpcb.t_rxtcur, tcpcb.t_dupacks); printf("peermss %u, ourmss %u, segsz %u\n\n", tcpcb.t_peermss, tcpcb.t_ourmss, tcpcb.t_segsz); printf("snd_una %u, snd_nxt %u, snd_up %u\n", tcpcb.snd_una, tcpcb.snd_nxt, tcpcb.snd_up); printf("snd_wl1 %u, snd_wl2 %u, iss %u, snd_wnd %lu\n\n", tcpcb.snd_wl1, tcpcb.snd_wl2, tcpcb.iss, tcpcb.snd_wnd); printf("rcv_wnd %lu, rcv_nxt %u, rcv_up %u, irs %u\n\n", tcpcb.rcv_wnd, tcpcb.rcv_nxt, tcpcb.rcv_up, tcpcb.irs); printf("rcv_adv %u, snd_max %u, snd_cwnd %lu, snd_ssthresh %lu\n", tcpcb.rcv_adv, tcpcb.snd_max, tcpcb.snd_cwnd, tcpcb.snd_ssthresh); printf("rcvtime %u, rtttime %u, rtseq %u, srtt %d, rttvar %d, " "rttmin %d, max_sndwnd %lu\n\n", tcpcb.t_rcvtime, tcpcb.t_rtttime, tcpcb.t_rtseq, tcpcb.t_srtt, tcpcb.t_rttvar, tcpcb.t_rttmin, tcpcb.max_sndwnd); printf("oobflags %d, iobc %d, softerror %d\n\n", tcpcb.t_oobflags, tcpcb.t_iobc, tcpcb.t_softerror); printf("snd_scale %d, rcv_scale %d, req_r_scale %d, req_s_scale %d\n", tcpcb.snd_scale, tcpcb.rcv_scale, tcpcb.request_r_scale, tcpcb.requested_s_scale); printf("ts_recent %u, ts_regent_age %d, last_ack_sent %u\n", tcpcb.ts_recent, tcpcb.ts_recent_age, tcpcb.last_ack_sent); }