/* $OpenBSD: if.c,v 1.50 2007/06/04 12:20:24 henning Exp $ */ /* $NetBSD: if.c,v 1.16.4.2 1996/06/07 21:46:46 thorpej 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. */ #ifndef lint #if 0 static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94"; #else static char *rcsid = "$OpenBSD: if.c,v 1.50 2007/06/04 12:20:24 henning Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "netstat.h" #define YES 1 #define NO 0 static void sidewaysintpr(u_int, u_long); static void catchalarm(int); /* * Print a description of the network interfaces. * NOTE: ifnetaddr is the location of the kernel global "ifnet", * which is a TAILQ_HEAD. */ void intpr(int interval, u_long ifnetaddr) { struct ifnet ifnet; union { struct ifaddr ifa; struct in_ifaddr in; #ifdef INET6 struct in6_ifaddr in6; #endif } ifaddr; u_long total, ifaddraddr; struct sockaddr *sa; struct ifnet_head ifhead; /* TAILQ_HEAD */ char name[IFNAMSIZ]; if (ifnetaddr == 0) { printf("ifnet: symbol not defined\n"); return; } if (interval) { sidewaysintpr((unsigned)interval, ifnetaddr); return; } /* * Find the pointer to the first ifnet structure. Replace * the pointer to the TAILQ_HEAD with the actual pointer * to the first list element. */ if (kread(ifnetaddr, &ifhead, sizeof ifhead)) return; ifnetaddr = (u_long)TAILQ_FIRST(&ifhead); printf("%-7.7s %-5.5s %-11.11s %-17.17s ", "Name", "Mtu", "Network", "Address"); if (bflag) printf("%10.10s %10.10s", "Ibytes", "Obytes"); else printf("%8.8s %5.5s %8.8s %5.5s %5.5s", "Ipkts", "Ierrs", "Opkts", "Oerrs", "Colls"); if (tflag) printf(" %s", "Time"); if (dflag) printf(" %s", "Drop"); putchar('\n'); ifaddraddr = 0; while (ifnetaddr || ifaddraddr) { struct sockaddr_in *sin; #ifdef INET6 struct sockaddr_in6 *sin6; #endif char *cp; int n, m; if (ifaddraddr == 0) { if (kread(ifnetaddr, &ifnet, sizeof ifnet)) return; bcopy(ifnet.if_xname, name, IFNAMSIZ); name[IFNAMSIZ - 1] = '\0'; /* sanity */ ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_list); if (interface != 0 && strcmp(name, interface) != 0) continue; cp = strchr(name, '\0'); if ((ifnet.if_flags & IFF_UP) == 0) *cp++ = '*'; *cp = '\0'; ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrlist); } if (qflag) { total = ifnet.if_ibytes + ifnet.if_obytes + ifnet.if_ipackets + ifnet.if_ierrors + ifnet.if_opackets + ifnet.if_oerrors + ifnet.if_collisions; if (tflag) total += ifnet.if_timer; if (dflag) total += ifnet.if_snd.ifq_drops; if (total == 0) { ifaddraddr = 0; continue; } } printf("%-7.7s %-5ld ", name, ifnet.if_mtu); if (ifaddraddr == 0) { printf("%-11.11s ", "none"); printf("%-17.17s ", "none"); } else { if (kread(ifaddraddr, &ifaddr, sizeof ifaddr)) { ifaddraddr = 0; continue; } #define CP(x) ((char *)(x)) cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + CP(&ifaddr); sa = (struct sockaddr *)cp; switch (sa->sa_family) { case AF_UNSPEC: printf("%-11.11s ", "none"); printf("%-17.17s ", "none"); break; case AF_INET: sin = (struct sockaddr_in *)sa; #ifdef notdef /* can't use inet_makeaddr because kernel * keeps nets unshifted. */ in = inet_makeaddr(ifaddr.in.ia_subnet, INADDR_ANY); cp = netname4(in.s_addr, ifaddr.in.ia_subnetmask); #else cp = netname4(ifaddr.in.ia_subnet, ifaddr.in.ia_subnetmask); #endif if (vflag) n = strlen(cp) < 11 ? 11 : strlen(cp); else n = 11; printf("%-*.*s ", n, n, cp); cp = routename4(sin->sin_addr.s_addr); if (vflag) n = strlen(cp) < 17 ? 17 : strlen(cp); else n = 17; printf("%-*.*s ", n, n, cp); if (aflag) { u_long multiaddr; struct in_multi inm; multiaddr = (u_long)LIST_FIRST(&ifaddr.in.ia_multiaddrs); while (multiaddr != 0) { kread(multiaddr, &inm, sizeof inm); printf("\n%25s %-17.17s ", "", routename4(inm.inm_addr.s_addr)); multiaddr = (u_long)LIST_NEXT(&inm, inm_list); } } break; #ifdef INET6 case AF_INET6: sin6 = (struct sockaddr_in6 *)sa; #ifdef __KAME__ if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { sin6->sin6_scope_id = ntohs(*(u_int16_t *) &sin6->sin6_addr.s6_addr[2]); sin6->sin6_addr.s6_addr[2] = 0; sin6->sin6_addr.s6_addr[3] = 0; } #endif cp = netname6(&ifaddr.in6.ia_addr, &ifaddr.in6.ia_prefixmask); if (vflag) n = strlen(cp) < 11 ? 11 : strlen(cp); else n = 11; printf("%-*.*s ", n, n, cp); cp = routename6(sin6); if (vflag) n = strlen(cp) < 17 ? 17 : strlen(cp); else n = 17; printf("%-*.*s ", n, n, cp); if (aflag) { u_long multiaddr; struct in6_multi inm; struct sockaddr_in6 m6; multiaddr = (u_long)LIST_FIRST(&ifaddr.in6.ia6_multiaddrs); while (multiaddr != 0) { kread(multiaddr, &inm, sizeof inm); memset(&m6, 0, sizeof(m6)); m6.sin6_len = sizeof(struct sockaddr_in6); m6.sin6_family = AF_INET6; m6.sin6_addr = inm.in6m_addr; #ifdef __KAME__ if (IN6_IS_ADDR_MC_LINKLOCAL(&m6.sin6_addr) || IN6_IS_ADDR_MC_INTFACELOCAL(&m6.sin6_addr)) { m6.sin6_scope_id = ntohs(*(u_int16_t *) &m6.sin6_addr.s6_addr[2]); m6.sin6_addr.s6_addr[2] = 0; m6.sin6_addr.s6_addr[3] = 0; } #endif cp = routename6(&m6); if (vflag) n = strlen(cp) < 17 ? 17 : strlen(cp); else n = 17; printf("\n%25s %-*.*s ", "", n, n, cp); multiaddr = (u_long)LIST_NEXT(&inm, in6m_entry); } } break; #endif case AF_APPLETALK: printf("atlk:%-12s",atalk_print(sa,0x10) ); printf("%-12s ",atalk_print(sa,0x0b) ); break; case AF_LINK: { struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; m = printf("%-11.11s ", ""); if (sdl->sdl_type == IFT_ETHER || sdl->sdl_type == IFT_CARP || sdl->sdl_type == IFT_FDDI || sdl->sdl_type == IFT_ISO88025) printf("%-17.17s ", ether_ntoa((struct ether_addr *)LLADDR(sdl))); else { cp = (char *)LLADDR(sdl); n = sdl->sdl_alen; goto hexprint; } } break; default: m = printf("(%d)", sa->sa_family); for (cp = sa->sa_len + (char *)sa; --cp > sa->sa_data && (*cp == 0);) {} n = cp - sa->sa_data + 1; cp = sa->sa_data; hexprint: while (--n >= 0) m += printf("%x%c", *cp++ & 0xff, n > 0 ? '.' : ' '); m = 30 - m; while (m-- > 0) putchar(' '); break; } ifaddraddr = (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_list); } if (bflag) printf("%10lu %10lu", ifnet.if_ibytes, ifnet.if_obytes); else printf("%8lu %5lu %8lu %5lu %5lu", ifnet.if_ipackets, ifnet.if_ierrors, ifnet.if_opackets, ifnet.if_oerrors, ifnet.if_collisions); if (tflag) printf(" %4d", ifnet.if_timer); if (dflag) printf(" %4d", ifnet.if_snd.ifq_drops); putchar('\n'); } } #define MAXIF 100 struct iftot { char ift_name[IFNAMSIZ]; /* interface name */ u_long ift_ip; /* input packets */ u_long ift_ib; /* input bytes */ u_long ift_ie; /* input errors */ u_long ift_op; /* output packets */ u_long ift_ob; /* output bytes */ u_long ift_oe; /* output errors */ u_long ift_co; /* collisions */ u_long ift_dr; /* drops */ } iftot[MAXIF]; volatile sig_atomic_t signalled; /* set if alarm goes off "early" */ /* * Print a running summary of interface statistics. * Repeat display every interval seconds, showing statistics * collected over that interval. Assumes that interval is non-zero. * First line printed at top of screen is always cumulative. */ static void sidewaysintpr(unsigned int interval, u_long off) { struct ifnet ifnet; u_long firstifnet; struct iftot *ip, *total; int line; struct iftot *lastif, *sum, *interesting; struct ifnet_head ifhead; /* TAILQ_HEAD */ sigset_t emptyset; /* * Find the pointer to the first ifnet structure. Replace * the pointer to the TAILQ_HEAD with the actual pointer * to the first list element. */ if (kread(off, &ifhead, sizeof ifhead)) return; firstifnet = (u_long)TAILQ_FIRST(&ifhead); lastif = iftot; sum = iftot + MAXIF - 1; total = sum - 1; interesting = (interface == NULL) ? iftot : NULL; for (off = firstifnet, ip = iftot; off;) { if (kread(off, &ifnet, sizeof ifnet)) break; bzero(ip->ift_name, sizeof(ip->ift_name)); snprintf(ip->ift_name, IFNAMSIZ, "%s", ifnet.if_xname); if (interface && strcmp(ifnet.if_xname, interface) == 0) interesting = ip; ip++; if (ip >= iftot + MAXIF - 2) break; off = (u_long)TAILQ_NEXT(&ifnet, if_list); } if (interesting == NULL) { fprintf(stderr, "%s: %s: unknown interface\n", __progname, interface); exit(1); } lastif = ip; (void)signal(SIGALRM, catchalarm); signalled = NO; (void)alarm(interval); banner: if (bflag) printf("%7.7s in %8.8s %6.6s out %5.5s", interesting->ift_name, " ", interesting->ift_name, " "); else printf("%5.5s in %5.5s%5.5s out %5.5s %5.5s", interesting->ift_name, " ", interesting->ift_name, " ", " "); if (dflag) printf(" %5.5s", " "); if (lastif - iftot > 0) { if (bflag) printf(" %7.7s in %8.8s %6.6s out %5.5s", "total", " ", "total", " "); else printf(" %5.5s in %5.5s%5.5s out %5.5s %5.5s", "total", " ", "total", " ", " "); if (dflag) printf(" %5.5s", " "); } for (ip = iftot; ip < iftot + MAXIF; ip++) { ip->ift_ip = 0; ip->ift_ib = 0; ip->ift_ie = 0; ip->ift_op = 0; ip->ift_ob = 0; ip->ift_oe = 0; ip->ift_co = 0; ip->ift_dr = 0; } putchar('\n'); if (bflag) printf("%10.10s %8.8s %10.10s %5.5s", "bytes", " ", "bytes", " "); else printf("%8.8s %5.5s %8.8s %5.5s %5.5s", "packets", "errs", "packets", "errs", "colls"); if (dflag) printf(" %5.5s", "drops"); if (lastif - iftot > 0) { if (bflag) printf(" %10.10s %8.8s %10.10s %5.5s", "bytes", " ", "bytes", " "); else printf(" %8.8s %5.5s %8.8s %5.5s %5.5s", "packets", "errs", "packets", "errs", "colls"); if (dflag) printf(" %5.5s", "drops"); } putchar('\n'); fflush(stdout); line = 0; loop: sum->ift_ip = 0; sum->ift_ib = 0; sum->ift_ie = 0; sum->ift_op = 0; sum->ift_ob = 0; sum->ift_oe = 0; sum->ift_co = 0; sum->ift_dr = 0; for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) { if (kread(off, &ifnet, sizeof ifnet)) { off = 0; continue; } if (ip == interesting) { if (bflag) printf("%10lu %8.8s %10lu %5.5s", ifnet.if_ibytes - ip->ift_ib, " ", ifnet.if_obytes - ip->ift_ob, " "); else printf("%8lu %5lu %8lu %5lu %5lu", ifnet.if_ipackets - ip->ift_ip, ifnet.if_ierrors - ip->ift_ie, ifnet.if_opackets - ip->ift_op, ifnet.if_oerrors - ip->ift_oe, ifnet.if_collisions - ip->ift_co); if (dflag) printf(" %5lu", ifnet.if_snd.ifq_drops - ip->ift_dr); } ip->ift_ip = ifnet.if_ipackets; ip->ift_ib = ifnet.if_ibytes; ip->ift_ie = ifnet.if_ierrors; ip->ift_op = ifnet.if_opackets; ip->ift_ob = ifnet.if_obytes; ip->ift_oe = ifnet.if_oerrors; ip->ift_co = ifnet.if_collisions; ip->ift_dr = ifnet.if_snd.ifq_drops; sum->ift_ip += ip->ift_ip; sum->ift_ib += ip->ift_ib; sum->ift_ie += ip->ift_ie; sum->ift_op += ip->ift_op; sum->ift_ob += ip->ift_ob; sum->ift_oe += ip->ift_oe; sum->ift_co += ip->ift_co; sum->ift_dr += ip->ift_dr; off = (u_long)TAILQ_NEXT(&ifnet, if_list); } if (lastif - iftot > 0) { if (bflag) printf(" %10lu %8.8s %10lu %5.5s", sum->ift_ib - total->ift_ib, " ", sum->ift_ob - total->ift_ob, " "); else printf(" %8lu %5lu %8lu %5lu %5lu", sum->ift_ip - total->ift_ip, sum->ift_ie - total->ift_ie, sum->ift_op - total->ift_op, sum->ift_oe - total->ift_oe, sum->ift_co - total->ift_co); if (dflag) printf(" %5lu", sum->ift_dr - total->ift_dr); } *total = *sum; putchar('\n'); fflush(stdout); line++; sigemptyset(&emptyset); if (!signalled) sigsuspend(&emptyset); signalled = NO; (void)alarm(interval); if (line == 21) goto banner; goto loop; /*NOTREACHED*/ } /* * Called if an interval expires before sidewaysintpr has completed a loop. * Sets a flag to not wait for the alarm. */ /* ARGSUSED */ static void catchalarm(int signo) { signalled = YES; }