/* $NetBSD: inet.c,v 1.107.6.1 2022/09/12 14:29:19 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 1.107.6.1 2022/09/12 14:29:19 martin Exp $"); #endif #endif /* not lint */ #define _CALLOUT_PRIVATE /* for defs in sys/callout.h */ #include #include #include #include #include #include #include #include #include #include #include #include #include #define ICMP_STRINGS #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 #include #include #include #include #include #include #include "netstat.h" #include "vtw.h" #include "prog_ops.h" char *inetname(struct in_addr *); void inetprint(struct in_addr *, uint16_t, const char *, int); void print_vtw_v4(const vtw_t *); /* * 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; static int compact; /* VTW-related variables. */ static struct timeval now; static void protoprhdr(void) { printf("Active Internet connections"); if (aflag) printf(" (including servers)"); putchar('\n'); if (Aflag) printf("%-8.8s ", "PCB"); printf( Vflag ? "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %-13.13s Expires\n" : "%-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"); } static void protopr0(intptr_t ppcb, u_long rcv_sb_cc, u_long snd_sb_cc, struct in_addr *laddr, uint16_t lport, struct in_addr *faddr, uint16_t fport, short t_state, const char *name, int inp_flags, const struct timeval *expires) { static const char *shorttcpstates[] = { "CLOSED", "LISTEN", "SYNSEN", "SYSRCV", "ESTABL", "CLWAIT", "FWAIT1", "CLOSNG", "LASTAK", "FWAIT2", "TMWAIT" }; int istcp; istcp = strcmp(name, "tcp") == 0; if (Aflag) printf("%8" PRIxPTR " ", ppcb); printf("%-5.5s %6ld %6ld%s", name, rcv_sb_cc, snd_sb_cc, compact ? "" : " "); if (numeric_port) { inetprint(laddr, lport, name, 1); inetprint(faddr, fport, name, 1); } else if (inp_flags & INP_ANONPORT) { inetprint(laddr, lport, name, 1); inetprint(faddr, fport, name, 0); } else { inetprint(laddr, lport, name, 0); inetprint(faddr, fport, name, 0); } if (istcp) { if (t_state < 0 || t_state >= TCP_NSTATES) printf(" %d", t_state); else printf(" %s", compact ? shorttcpstates[t_state] : tcpstates[t_state]); } if (Vflag && expires != NULL) { if (expires->tv_sec == 0 && expires->tv_usec == -1) printf(" reclaimed"); else { struct timeval delta; timersub(expires, &now, &delta); printf(" %.3fms", delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0); } } putchar('\n'); } static void dbg_printf(const char *fmt, ...) { return; } void print_vtw_v4(const vtw_t *vtw) { const vtw_v4_t *v4 = (const vtw_v4_t *)vtw; struct timeval delta; struct in_addr la, fa; char buf[2][32]; static const struct timeval zero = {.tv_sec = 0, .tv_usec = 0}; la.s_addr = v4->laddr; fa.s_addr = v4->faddr; snprintf(&buf[0][0], 32, "%s", inet_ntoa(la)); snprintf(&buf[1][0], 32, "%s", inet_ntoa(fa)); timersub(&vtw->expire, &now, &delta); if (vtw->expire.tv_sec == 0 && vtw->expire.tv_usec == -1) { dbg_printf("%15.15s:%d %15.15s:%d reclaimed\n", buf[0], ntohs(v4->lport), buf[1], ntohs(v4->fport)); if (!(Vflag && vflag)) return; } else if (vtw->expire.tv_sec == 0) return; else if (timercmp(&delta, &zero, <) && !(Vflag && vflag)) { dbg_printf("%15.15s:%d %15.15s:%d expired\n", buf[0], ntohs(v4->lport), buf[1], ntohs(v4->fport)); return; } else { dbg_printf("%15.15s:%d %15.15s:%d expires in %.3fms\n", buf[0], ntohs(v4->lport), buf[1], ntohs(v4->fport), delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0); } protopr0(0, 0, 0, &la, v4->lport, &fa, v4->fport, TCPS_TIME_WAIT, "tcp", 0, &vtw->expire); } struct kinfo_pcb * getpcblist_sysctl(const char *name, size_t *len) { int mib[8]; size_t namelen = 0, size = 0; char *mibname = NULL; struct kinfo_pcb *pcblist; memset(mib, 0, sizeof(mib)); if (asprintf(&mibname, "net.inet%s.%s.pcblist", name + 3, name) == -1) err(1, "asprintf"); /* get dynamic pcblist node */ if (sysctlnametomib(mibname, mib, &namelen) == -1) { if (errno == ENOENT) { *len = 0; return NULL; } err(1, "sysctlnametomib: %s", mibname); } free(mibname); if (prog_sysctl(mib, __arraycount(mib), NULL, &size, NULL, 0) == -1) err(1, "sysctl (query)"); if ((pcblist = malloc(size)) == NULL) err(1, "malloc"); memset(pcblist, 0, size); mib[6] = sizeof(*pcblist); mib[7] = size / sizeof(*pcblist); if (prog_sysctl(mib, __arraycount(mib), pcblist, &size, NULL, 0) == -1) err(1, "sysctl (copy)"); *len = size / sizeof(*pcblist); return pcblist; } static struct kinfo_pcb * getpcblist_kmem(u_long off, const char *name, size_t *len) { struct inpcbtable table; struct inpcb_hdr *next, *prev; struct inpcb inpcb; struct tcpcb tcpcb; struct socket sockb; int istcp = strcmp(name, "tcp") == 0; struct kinfo_pcb *pcblist; size_t size = 100, i; struct sockaddr_in sin; struct inpcbqueue *head; if (off == 0) { *len = 0; return NULL; } kread(off, (char *)&table, sizeof table); head = &table.inpt_queue; next = TAILQ_FIRST(head); prev = TAILQ_END(head); if ((pcblist = malloc(size * sizeof(*pcblist))) == NULL) err(1, "malloc"); i = 0; while (next != TAILQ_END(head)) { kread((u_long)next, (char *)&inpcb, sizeof inpcb); prev = next; next = TAILQ_NEXT(&inpcb, inp_queue); if (inpcb.inp_af != AF_INET) continue; kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof(sockb)); if (istcp) { kread((u_long)inpcb.inp_ppcb, (char *)&tcpcb, sizeof (tcpcb)); } pcblist[i].ki_ppcbaddr = istcp ? (uintptr_t) inpcb.inp_ppcb : (uintptr_t) prev; pcblist[i].ki_rcvq = (uint64_t)sockb.so_rcv.sb_cc; pcblist[i].ki_sndq = (uint64_t)sockb.so_snd.sb_cc; sin.sin_addr = inpcb.inp_laddr; sin.sin_port = inpcb.inp_lport; memcpy(&pcblist[i].ki_s, &sin, sizeof(sin)); sin.sin_addr = inpcb.inp_faddr; sin.sin_port = inpcb.inp_fport; memcpy(&pcblist[i].ki_d, &sin, sizeof(sin)); pcblist[i].ki_tstate = tcpcb.t_state; pcblist[i].ki_pflags = inpcb.inp_flags; if (i++ == size) { size += 100; struct kinfo_pcb *n = realloc(pcblist, size * sizeof(*pcblist)); if (n == NULL) err(1, "realloc"); pcblist = n; } } *len = i; return pcblist; } void protopr(u_long off, const char *name) { static int first = 1; struct kinfo_pcb *pcblist; size_t i, len; compact = 0; if (Aflag) { if (!numeric_addr) width = 18; else { width = 21; compact = 1; } } else width = 22; if (use_sysctl) pcblist = getpcblist_sysctl(name, &len); else pcblist = getpcblist_kmem(off, name, &len); for (i = 0; i < len; i++) { struct sockaddr_in src, dst; memcpy(&src, &pcblist[i].ki_s, sizeof(src)); memcpy(&dst, &pcblist[i].ki_d, sizeof(dst)); if (!aflag && (inet_lnaof(dst.sin_addr) == INADDR_ANY)) continue; if (first) { protoprhdr(); first = 0; } protopr0((intptr_t) pcblist[i].ki_ppcbaddr, pcblist[i].ki_rcvq, pcblist[i].ki_sndq, &src.sin_addr, src.sin_port, &dst.sin_addr, dst.sin_port, pcblist[i].ki_tstate, name, pcblist[i].ki_pflags, NULL); } free(pcblist); if (strcmp(name, "tcp") == 0) { struct timeval t; timebase(&t); gettimeofday(&now, NULL); timersub(&now, &t, &now); show_vtw_v4(print_vtw_v4); } } /* * Dump TCP statistics structure. */ void tcp_stats(u_long off, const char *name) { uint64_t tcpstat[TCP_NSTATS]; if (use_sysctl) { size_t size = sizeof(tcpstat); if (sysctlbyname("net.inet.tcp.stats", tcpstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf ("%s:\n", name); #define ps(f, m) if (tcpstat[f] || sflag <= 1) \ printf(m, tcpstat[f]) #define p(f, m) if (tcpstat[f] || sflag <= 1) \ printf(m, tcpstat[f], plural(tcpstat[f])) #define p2(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \ printf(m, tcpstat[f1], plural(tcpstat[f1]), \ tcpstat[f2], plural(tcpstat[f2])) #define p2s(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \ printf(m, tcpstat[f1], plural(tcpstat[f1]), \ tcpstat[f2]) #define p3(f, m) if (tcpstat[f] || sflag <= 1) \ printf(m, tcpstat[f], plurales(tcpstat[f])) p(TCP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n"); p2(TCP_STAT_SNDPACK,TCP_STAT_SNDBYTE, "\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s)\n"); p2(TCP_STAT_SNDREXMITPACK, TCP_STAT_SNDREXMITBYTE, "\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s) retransmitted\n"); p2s(TCP_STAT_SNDACKS, TCP_STAT_DELACK, "\t\t%" PRIu64 " ack-only packet%s (%" PRIu64 " delayed)\n"); p(TCP_STAT_SNDURG, "\t\t%" PRIu64 " URG only packet%s\n"); p(TCP_STAT_SNDPROBE, "\t\t%" PRIu64 " window probe packet%s\n"); p(TCP_STAT_SNDWINUP, "\t\t%" PRIu64 " window update packet%s\n"); p(TCP_STAT_SNDCTRL, "\t\t%" PRIu64 " control packet%s\n"); p(TCP_STAT_SELFQUENCH, "\t\t%" PRIu64 " send attempt%s resulted in self-quench\n"); p(TCP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n"); p2(TCP_STAT_RCVACKPACK, TCP_STAT_RCVACKBYTE, "\t\t%" PRIu64 " ack%s (for %" PRIu64 " byte%s)\n"); p(TCP_STAT_RCVDUPACK, "\t\t%" PRIu64 " duplicate ack%s\n"); p(TCP_STAT_RCVACKTOOMUCH, "\t\t%" PRIu64 " ack%s for unsent data\n"); p2(TCP_STAT_RCVPACK, TCP_STAT_RCVBYTE, "\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) received in-sequence\n"); p2(TCP_STAT_RCVDUPPACK, TCP_STAT_RCVDUPBYTE, "\t\t%" PRIu64 " completely duplicate packet%s (%" PRIu64 " byte%s)\n"); p(TCP_STAT_PAWSDROP, "\t\t%" PRIu64 " old duplicate packet%s\n"); p2(TCP_STAT_RCVPARTDUPPACK, TCP_STAT_RCVPARTDUPBYTE, "\t\t%" PRIu64 " packet%s with some dup. data (%" PRIu64 " byte%s duped)\n"); p2(TCP_STAT_RCVOOPACK, TCP_STAT_RCVOOBYTE, "\t\t%" PRIu64 " out-of-order packet%s (%" PRIu64 " byte%s)\n"); p2(TCP_STAT_RCVPACKAFTERWIN, TCP_STAT_RCVBYTEAFTERWIN, "\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) of data after window\n"); p(TCP_STAT_RCVWINPROBE, "\t\t%" PRIu64 " window probe%s\n"); p(TCP_STAT_RCVWINUPD, "\t\t%" PRIu64 " window update packet%s\n"); p(TCP_STAT_RCVAFTERCLOSE, "\t\t%" PRIu64 " packet%s received after close\n"); p(TCP_STAT_RCVBADSUM, "\t\t%" PRIu64 " discarded for bad checksum%s\n"); p(TCP_STAT_RCVBADOFF, "\t\t%" PRIu64 " discarded for bad header offset field%s\n"); ps(TCP_STAT_RCVSHORT, "\t\t%" PRIu64 " discarded because packet too short\n"); p(TCP_STAT_CONNATTEMPT, "\t%" PRIu64 " connection request%s\n"); p(TCP_STAT_ACCEPTS, "\t%" PRIu64 " connection accept%s\n"); p(TCP_STAT_CONNECTS, "\t%" PRIu64 " connection%s established (including accepts)\n"); p2(TCP_STAT_CLOSED, TCP_STAT_DROPS, "\t%" PRIu64 " connection%s closed (including %" PRIu64 " drop%s)\n"); p(TCP_STAT_CONNDROPS, "\t%" PRIu64 " embryonic connection%s dropped\n"); p(TCP_STAT_DELAYED_FREE, "\t%" PRIu64 " delayed free%s of tcpcb\n"); p2(TCP_STAT_RTTUPDATED, TCP_STAT_SEGSTIMED, "\t%" PRIu64 " segment%s updated rtt (of %" PRIu64 " attempt%s)\n"); p(TCP_STAT_REXMTTIMEO, "\t%" PRIu64 " retransmit timeout%s\n"); p(TCP_STAT_TIMEOUTDROP, "\t\t%" PRIu64 " connection%s dropped by rexmit timeout\n"); p2(TCP_STAT_PERSISTTIMEO, TCP_STAT_PERSISTDROPS, "\t%" PRIu64 " persist timeout%s (resulting in %" PRIu64 " dropped " "connection%s)\n"); p(TCP_STAT_KEEPTIMEO, "\t%" PRIu64 " keepalive timeout%s\n"); p(TCP_STAT_KEEPPROBE, "\t\t%" PRIu64 " keepalive probe%s sent\n"); p(TCP_STAT_KEEPDROPS, "\t\t%" PRIu64 " connection%s dropped by keepalive\n"); p(TCP_STAT_PREDACK, "\t%" PRIu64 " correct ACK header prediction%s\n"); p(TCP_STAT_PREDDAT, "\t%" PRIu64 " correct data packet header prediction%s\n"); p3(TCP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n"); ps(TCP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n"); p(TCP_STAT_CONNSDRAINED, "\t%" PRIu64 " connection%s drained due to memory shortage\n"); p(TCP_STAT_PMTUBLACKHOLE, "\t%" PRIu64 " PMTUD blackhole%s detected\n"); p(TCP_STAT_BADSYN, "\t%" PRIu64 " bad connection attempt%s\n"); ps(TCP_STAT_SC_ADDED, "\t%" PRIu64 " SYN cache entries added\n"); p(TCP_STAT_SC_COLLISIONS, "\t\t%" PRIu64 " hash collision%s\n"); ps(TCP_STAT_SC_COMPLETED, "\t\t%" PRIu64 " completed\n"); ps(TCP_STAT_SC_ABORTED, "\t\t%" PRIu64 " aborted (no space to build PCB)\n"); ps(TCP_STAT_SC_TIMED_OUT, "\t\t%" PRIu64 " timed out\n"); ps(TCP_STAT_SC_OVERFLOWED, "\t\t%" PRIu64 " dropped due to overflow\n"); ps(TCP_STAT_SC_BUCKETOVERFLOW, "\t\t%" PRIu64 " dropped due to bucket overflow\n"); ps(TCP_STAT_SC_RESET, "\t\t%" PRIu64 " dropped due to RST\n"); ps(TCP_STAT_SC_UNREACH, "\t\t%" PRIu64 " dropped due to ICMP unreachable\n"); ps(TCP_STAT_SC_DELAYED_FREE, "\t\t%" PRIu64 " delayed free of SYN cache entries\n"); p(TCP_STAT_SC_RETRANSMITTED, "\t%" PRIu64 " SYN,ACK%s retransmitted\n"); p(TCP_STAT_SC_DUPESYN, "\t%" PRIu64 " duplicate SYN%s received for entries " "already in the cache\n"); p(TCP_STAT_SC_DROPPED, "\t%" PRIu64 " SYN%s dropped (no route or no space)\n"); p(TCP_STAT_BADSIG, "\t%" PRIu64 " packet%s with bad signature\n"); p(TCP_STAT_GOODSIG, "\t%" PRIu64 " packet%s with good signature\n"); p(TCP_STAT_ECN_SHS, "\t%" PRIu64 " successful ECN handshake%s\n"); p(TCP_STAT_ECN_CE, "\t%" PRIu64 " packet%s with ECN CE bit\n"); p(TCP_STAT_ECN_ECT, "\t%" PRIu64 " packet%s ECN ECT(0) bit\n"); #undef p #undef ps #undef p2 #undef p2s #undef p3 show_vtw_stats(); } /* * Dump UDP statistics structure. */ void udp_stats(u_long off, const char *name) { uint64_t udpstat[UDP_NSTATS]; u_quad_t delivered; if (use_sysctl) { size_t size = sizeof(udpstat); if (sysctlbyname("net.inet.udp.stats", udpstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf ("%s:\n", name); #define ps(f, m) if (udpstat[f] || sflag <= 1) \ printf(m, udpstat[f]) #define p(f, m) if (udpstat[f] || sflag <= 1) \ printf(m, udpstat[f], plural(udpstat[f])) #define p3(f, m) if (udpstat[f] || sflag <= 1) \ printf(m, udpstat[f], plurales(udpstat[f])) p(UDP_STAT_IPACKETS, "\t%" PRIu64 " datagram%s received\n"); ps(UDP_STAT_HDROPS, "\t%" PRIu64 " with incomplete header\n"); ps(UDP_STAT_BADLEN, "\t%" PRIu64 " with bad data length field\n"); ps(UDP_STAT_BADSUM, "\t%" PRIu64 " with bad checksum\n"); ps(UDP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n"); p(UDP_STAT_NOPORTBCAST, "\t%" PRIu64 " broadcast/multicast datagram%s dropped due to no socket\n"); ps(UDP_STAT_FULLSOCK, "\t%" PRIu64 " dropped due to full socket buffers\n"); delivered = udpstat[UDP_STAT_IPACKETS] - udpstat[UDP_STAT_HDROPS] - udpstat[UDP_STAT_BADLEN] - udpstat[UDP_STAT_BADSUM] - udpstat[UDP_STAT_NOPORT] - udpstat[UDP_STAT_NOPORTBCAST] - udpstat[UDP_STAT_FULLSOCK]; if (delivered || sflag <= 1) printf("\t%" PRIu64 " delivered\n", delivered); p3(UDP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n"); p(UDP_STAT_OPACKETS, "\t%" PRIu64 " datagram%s output\n"); #undef ps #undef p #undef p3 } /* * Dump IP statistics structure. */ void ip_stats(u_long off, const char *name) { uint64_t ipstat[IP_NSTATS]; if (use_sysctl) { size_t size = sizeof(ipstat); if (sysctlbyname("net.inet.ip.stats", ipstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf("%s:\n", name); #define ps(f, m) if (ipstat[f] || sflag <= 1) \ printf(m, ipstat[f]) #define p(f, m) if (ipstat[f] || sflag <= 1) \ printf(m, ipstat[f], plural(ipstat[f])) p(IP_STAT_TOTAL, "\t%" PRIu64 " total packet%s received\n"); p(IP_STAT_BADSUM, "\t%" PRIu64 " bad header checksum%s\n"); ps(IP_STAT_TOOSMALL, "\t%" PRIu64 " with size smaller than minimum\n"); ps(IP_STAT_TOOSHORT, "\t%" PRIu64 " with data size < data length\n"); ps(IP_STAT_TOOLONG, "\t%" PRIu64 " with length > max ip packet size\n"); ps(IP_STAT_BADHLEN, "\t%" PRIu64 " with header length < data size\n"); ps(IP_STAT_BADLEN, "\t%" PRIu64 " with data length < header length\n"); ps(IP_STAT_BADOPTIONS, "\t%" PRIu64 " with bad options\n"); ps(IP_STAT_BADVERS, "\t%" PRIu64 " with incorrect version number\n"); p(IP_STAT_FRAGMENTS, "\t%" PRIu64 " fragment%s received\n"); p(IP_STAT_FRAGDROPPED, "\t%" PRIu64 " fragment%s dropped (dup or out of space)\n"); p(IP_STAT_RCVMEMDROP, "\t%" PRIu64 " fragment%s dropped (out of ipqent)\n"); p(IP_STAT_BADFRAGS, "\t%" PRIu64 " malformed fragment%s dropped\n"); p(IP_STAT_FRAGTIMEOUT, "\t%" PRIu64 " fragment%s dropped after timeout\n"); p(IP_STAT_REASSEMBLED, "\t%" PRIu64 " packet%s reassembled ok\n"); p(IP_STAT_DELIVERED, "\t%" PRIu64 " packet%s for this host\n"); p(IP_STAT_NOPROTO, "\t%" PRIu64 " packet%s for unknown/unsupported protocol\n"); p(IP_STAT_FORWARD, "\t%" PRIu64 " packet%s forwarded"); p(IP_STAT_FASTFORWARD, " (%" PRIu64 " packet%s fast forwarded)"); if (ipstat[IP_STAT_FORWARD] || sflag <= 1) putchar('\n'); p(IP_STAT_CANTFORWARD, "\t%" PRIu64 " packet%s not forwardable\n"); p(IP_STAT_REDIRECTSENT, "\t%" PRIu64 " redirect%s sent\n"); p(IP_STAT_NOGIF, "\t%" PRIu64 " packet%s no matching gif found\n"); p(IP_STAT_NOIPSEC, "\t%" PRIu64 " packet%s no matching ipsecif found\n"); p(IP_STAT_LOCALOUT, "\t%" PRIu64 " packet%s sent from this host\n"); p(IP_STAT_RAWOUT, "\t%" PRIu64 " packet%s sent with fabricated ip header\n"); p(IP_STAT_ODROPPED, "\t%" PRIu64 " output packet%s dropped due to no bufs, etc.\n"); p(IP_STAT_NOROUTE, "\t%" PRIu64 " output packet%s discarded due to no route\n"); p(IP_STAT_FRAGMENTED, "\t%" PRIu64 " output datagram%s fragmented\n"); p(IP_STAT_OFRAGMENTS, "\t%" PRIu64 " fragment%s created\n"); p(IP_STAT_CANTFRAG, "\t%" PRIu64 " datagram%s that can't be fragmented\n"); p(IP_STAT_BADADDR, "\t%" PRIu64 " datagram%s with bad address in header\n"); #undef ps #undef p } /* * Dump ICMP statistics. */ void icmp_stats(u_long off, const char *name) { uint64_t icmpstat[ICMP_NSTATS]; int i, first; if (use_sysctl) { size_t size = sizeof(icmpstat); if (sysctlbyname("net.inet.icmp.stats", icmpstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf("%s:\n", name); #define p(f, m) if (icmpstat[f] || sflag <= 1) \ printf(m, icmpstat[f], plural(icmpstat[f])) p(ICMP_STAT_ERROR, "\t%" PRIu64 " call%s to icmp_error\n"); p(ICMP_STAT_OLDICMP, "\t%" PRIu64 " error%s not generated because old message was icmp\n"); for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) if (icmpstat[ICMP_STAT_OUTHIST + i] != 0) { if (first) { printf("\tOutput histogram:\n"); first = 0; } printf("\t\t%s: %" PRIu64 "\n", icmp_type[i], icmpstat[ICMP_STAT_OUTHIST + i]); } p(ICMP_STAT_BADCODE, "\t%" PRIu64 " message%s with bad code fields\n"); p(ICMP_STAT_TOOSHORT, "\t%" PRIu64 " message%s < minimum length\n"); p(ICMP_STAT_CHECKSUM, "\t%" PRIu64 " bad checksum%s\n"); p(ICMP_STAT_BADLEN, "\t%" PRIu64 " message%s with bad length\n"); p(ICMP_STAT_BMCASTECHO, "\t%" PRIu64 " multicast echo request%s ignored\n"); p(ICMP_STAT_BMCASTTSTAMP, "\t%" PRIu64 " multicast timestamp request%s ignored\n"); for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) if (icmpstat[ICMP_STAT_INHIST + i] != 0) { if (first) { printf("\tInput histogram:\n"); first = 0; } printf("\t\t%s: %" PRIu64 "\n", icmp_type[i], icmpstat[ICMP_STAT_INHIST + i]); } p(ICMP_STAT_REFLECT, "\t%" PRIu64 " message response%s generated\n"); p(ICMP_STAT_PMTUCHG, "\t%" PRIu64 " path MTU change%s\n"); #undef p } /* * Dump IGMP statistics structure. */ void igmp_stats(u_long off, const char *name) { uint64_t igmpstat[IGMP_NSTATS]; if (use_sysctl) { size_t size = sizeof(igmpstat); if (sysctlbyname("net.inet.igmp.stats", igmpstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf("%s:\n", name); #define p(f, m) if (igmpstat[f] || sflag <= 1) \ printf(m, igmpstat[f], plural(igmpstat[f])) #define py(f, m) if (igmpstat[f] || sflag <= 1) \ printf(m, igmpstat[f], igmpstat[f] != 1 ? "ies" : "y") p(IGMP_STAT_RCV_TOTAL, "\t%" PRIu64 " message%s received\n"); p(IGMP_STAT_RCV_TOOSHORT, "\t%" PRIu64 " message%s received with too few bytes\n"); p(IGMP_STAT_RCV_BADSUM, "\t%" PRIu64 " message%s received with bad checksum\n"); py(IGMP_STAT_RCV_QUERIES, "\t%" PRIu64 " membership quer%s received\n"); py(IGMP_STAT_RCV_BADQUERIES, "\t%" PRIu64 " membership quer%s received with invalid field(s)\n"); p(IGMP_STAT_RCV_REPORTS, "\t%" PRIu64 " membership report%s received\n"); p(IGMP_STAT_RCV_BADREPORTS, "\t%" PRIu64 " membership report%s received with invalid field(s)\n"); p(IGMP_STAT_RCV_OURREPORTS, "\t%" PRIu64 " membership report%s received for groups to which we belong\n"); p(IGMP_STAT_SND_REPORTS, "\t%" PRIu64 " membership report%s sent\n"); #undef p #undef py } /* * Dump CARP statistics structure. */ void carp_stats(u_long off, const char *name) { uint64_t carpstat[CARP_NSTATS]; if (use_sysctl) { size_t size = sizeof(carpstat); if (sysctlbyname("net.inet.carp.stats", carpstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf("%s:\n", name); #define p(f, m) if (carpstat[f] || sflag <= 1) \ printf(m, carpstat[f], plural(carpstat[f])) #define p2(f, m) if (carpstat[f] || sflag <= 1) \ printf(m, carpstat[f]) p(CARP_STAT_IPACKETS, "\t%" PRIu64 " packet%s received (IPv4)\n"); p(CARP_STAT_IPACKETS6, "\t%" PRIu64 " packet%s received (IPv6)\n"); p(CARP_STAT_BADIF, "\t\t%" PRIu64 " packet%s discarded for bad interface\n"); p(CARP_STAT_BADTTL, "\t\t%" PRIu64 " packet%s discarded for wrong TTL\n"); p(CARP_STAT_HDROPS, "\t\t%" PRIu64 " packet%s shorter than header\n"); p(CARP_STAT_BADSUM, "\t\t%" PRIu64 " packet%s discarded for bad checksum\n"); p(CARP_STAT_BADVER, "\t\t%" PRIu64 " packet%s discarded with a bad version\n"); p2(CARP_STAT_BADLEN, "\t\t%" PRIu64 " discarded because packet was too short\n"); p(CARP_STAT_BADAUTH, "\t\t%" PRIu64 " packet%s discarded for bad authentication\n"); p(CARP_STAT_BADVHID, "\t\t%" PRIu64 " packet%s discarded for bad vhid\n"); p(CARP_STAT_BADADDRS, "\t\t%" PRIu64 " packet%s discarded because of a bad address list\n"); p(CARP_STAT_OPACKETS, "\t%" PRIu64 " packet%s sent (IPv4)\n"); p(CARP_STAT_OPACKETS6, "\t%" PRIu64 " packet%s sent (IPv6)\n"); p2(CARP_STAT_ONOMEM, "\t\t%" PRIu64 " send failed due to mbuf memory error\n"); #undef p #undef p2 } /* * Dump PIM statistics structure. */ void pim_stats(u_long off, const 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, pimstat.f, plural(pimstat.f)) p(pims_rcv_total_msgs, "\t%" PRIu64 " message%s received\n"); p(pims_rcv_total_bytes, "\t%" PRIu64 " byte%s received\n"); p(pims_rcv_tooshort, "\t%" PRIu64 " message%s received with too few bytes\n"); p(pims_rcv_badsum, "\t%" PRIu64 " message%s received with bad checksum\n"); p(pims_rcv_badversion, "\t%" PRIu64 " message%s received with bad version\n"); p(pims_rcv_registers_msgs, "\t%" PRIu64 " data register message%s received\n"); p(pims_rcv_registers_bytes, "\t%" PRIu64 " data register byte%s received\n"); p(pims_rcv_registers_wrongiif, "\t%" PRIu64 " data register message%s received on wrong iif\n"); p(pims_rcv_badregisters, "\t%" PRIu64 " bad register%s received\n"); p(pims_snd_registers_msgs, "\t%" PRIu64 " data register message%s sent\n"); p(pims_snd_registers_bytes, "\t%" PRIu64 " data register byte%s sent\n"); #undef p } /* * Dump the ARP statistics structure. */ void arp_stats(u_long off, const char *name) { uint64_t arpstat[ARP_NSTATS]; if (use_sysctl) { size_t size = sizeof(arpstat); if (sysctlbyname("net.inet.arp.stats", arpstat, &size, NULL, 0) == -1) return; } else { warnx("%s stats not available via KVM.", name); return; } printf("%s:\n", name); #define ps(f, m) if (arpstat[f] || sflag <= 1) \ printf(m, arpstat[f]) #define p(f, m) if (arpstat[f] || sflag <= 1) \ printf(m, arpstat[f], plural(arpstat[f])) p(ARP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n"); p(ARP_STAT_SNDREPLY, "\t\t%" PRIu64 " reply packet%s\n"); p(ARP_STAT_SENDREQUEST, "\t\t%" PRIu64 " request packet%s\n"); p(ARP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n"); p(ARP_STAT_RCVREPLY, "\t\t%" PRIu64 " reply packet%s\n"); p(ARP_STAT_RCVREQUEST, "\t\t%" PRIu64 " valid request packet%s\n"); p(ARP_STAT_RCVMCAST, "\t\t%" PRIu64 " broadcast/multicast packet%s\n"); p(ARP_STAT_RCVBADPROTO, "\t\t%" PRIu64 " packet%s with unknown protocol type\n"); p(ARP_STAT_RCVBADLEN, "\t\t%" PRIu64 " packet%s with bad (short) length\n"); p(ARP_STAT_RCVZEROTPA, "\t\t%" PRIu64 " packet%s with null target IP address\n"); p(ARP_STAT_RCVZEROSPA, "\t\t%" PRIu64 " packet%s with null source IP address\n"); ps(ARP_STAT_RCVNOINT, "\t\t%" PRIu64 " could not be mapped to an interface\n"); p(ARP_STAT_RCVLOCALSHA, "\t\t%" PRIu64 " packet%s sourced from a local hardware " "address\n"); p(ARP_STAT_RCVBCASTSHA, "\t\t%" PRIu64 " packet%s with a broadcast " "source hardware address\n"); p(ARP_STAT_RCVLOCALSPA, "\t\t%" PRIu64 " duplicate%s for a local IP address\n"); p(ARP_STAT_RCVOVERPERM, "\t\t%" PRIu64 " attempt%s to overwrite a static entry\n"); p(ARP_STAT_RCVOVERINT, "\t\t%" PRIu64 " packet%s received on wrong interface\n"); p(ARP_STAT_RCVOVER, "\t\t%" PRIu64 " entry%s overwritten\n"); p(ARP_STAT_RCVLENCHG, "\t\t%" PRIu64 " change%s in hardware address length\n"); p(ARP_STAT_DFRTOTAL, "\t%" PRIu64 " packet%s deferred pending ARP resolution\n"); ps(ARP_STAT_DFRSENT, "\t\t%" PRIu64 " sent\n"); ps(ARP_STAT_DFRDROPPED, "\t\t%" PRIu64 " dropped\n"); p(ARP_STAT_ALLOCFAIL, "\t%" PRIu64 " 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(struct in_addr *in, uint16_t port, const char *proto, int port_numeric) { 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 (!port_numeric && 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(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(u_long off, const char *name, u_long pcbaddr) { callout_impl_t *ci; struct tcpcb tcpcb; int i, hardticks; struct kinfo_pcb *pcblist; size_t j, len; if (use_sysctl) pcblist = getpcblist_sysctl(name, &len); else pcblist = getpcblist_kmem(off, name, &len); for (j = 0; j < len; j++) if (pcblist[j].ki_ppcbaddr == pcbaddr) break; free(pcblist); if (j == len) errx(1, "0x%lx is not a valid pcb address", pcbaddr); 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++) { char buf[128]; ci = (callout_impl_t *)&tcpcb.t_timer[i]; snprintb(buf, sizeof(buf), CALLOUT_FMT, ci->c_flags); printf("\t%s\t%s", tcptimers[i], buf); if (ci->c_flags & CALLOUT_PENDING) printf("\t%d\n", ci->c_time - hardticks); else printf("\n"); } 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, segqlen %u\n\n", tcpcb.t_peermss, tcpcb.t_ourmss, tcpcb.t_segsz, tcpcb.t_segqlen); 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); }