diff options
Diffstat (limited to 'usr.bin/netstat/if.c')
| -rw-r--r-- | usr.bin/netstat/if.c | 745 |
1 files changed, 745 insertions, 0 deletions
diff --git a/usr.bin/netstat/if.c b/usr.bin/netstat/if.c new file mode 100644 index 000000000000..7ee03eb3689b --- /dev/null +++ b/usr.bin/netstat/if.c @@ -0,0 +1,745 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org> + * 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 <sys/param.h> +#include <sys/protosw.h> +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/time.h> + +#include <net/if.h> +#include <net/if_dl.h> +#include <net/if_types.h> +#include <net/ethernet.h> +#include <netinet/in.h> +#include <netinet/in_var.h> +#include <arpa/inet.h> +#ifdef PF +#include <net/pfvar.h> +#include <net/pflow.h> +#include <net/if_pfsync.h> +#endif + +#include <errno.h> +#include <ifaddrs.h> +#include <libutil.h> +#ifdef INET6 +#include <netdb.h> +#endif +#include <signal.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> +#include <libxo/xo.h> + +#include "netstat.h" + +static void sidewaysintpr(void); + +#ifdef PF +static const char* pfsyncacts[] = { + /* PFSYNC_ACT_CLR */ "clear all request", + /* PFSYNC_ACT_INS_1301 */ "13.1 state insert", + /* PFSYNC_ACT_INS_ACK */ "state inserted ack", + /* PFSYNC_ACT_UPD_1301 */ "13.1 state update", + /* PFSYNC_ACT_UPD_C */ "compressed state update", + /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", + /* PFSYNC_ACT_DEL */ "state delete", + /* PFSYNC_ACT_DEL_C */ "compressed state delete", + /* PFSYNC_ACT_INS_F */ "fragment insert", + /* PFSYNC_ACT_DEL_F */ "fragment delete", + /* PFSYNC_ACT_BUS */ "bulk update mark", + /* PFSYNC_ACT_TDB */ "TDB replay counter update", + /* PFSYNC_ACT_EOF */ "end of frame mark", + /* PFSYNC_ACT_INS_1400 */ "14.0 state insert", + /* PFSYNC_ACT_UPD_1400 */ "14.0 state update", + /* PFSYNC_ACT_INS_1500 */ "state insert", + /* PFSYNC_ACT_UPD_1500 */ "state update", +}; + +static const char* pfsyncacts_name[] = { + /* PFSYNC_ACT_CLR */ "clear-all-request", + /* PFSYNC_ACT_INS_1301 */ "state-insert-1301", + /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", + /* PFSYNC_ACT_UPD_1301 */ "state-update-1301", + /* PFSYNC_ACT_UPD_C */ "compressed-state-update", + /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", + /* PFSYNC_ACT_DEL */ "state-delete", + /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", + /* PFSYNC_ACT_INS_F */ "fragment-insert", + /* PFSYNC_ACT_DEL_F */ "fragment-delete", + /* PFSYNC_ACT_BUS */ "bulk-update-mark", + /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", + /* PFSYNC_ACT_EOF */ "end-of-frame-mark", + /* PFSYNC_ACT_INS_1400 */ "state-insert-1400", + /* PFSYNC_ACT_UPD_1400 */ "state-update-1400", + /* PFSYNC_ACT_INS_1500 */ "state-insert", + /* PFSYNC_ACT_UPD_1500 */ "state-update", +}; + +static void +pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) +{ + int i; + + xo_open_list(list); + for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { + if (*a || sflag <= 1) { + xo_open_instance(list); + xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", + pfsyncacts_name[i], (uintmax_t)(*a), + pfsyncacts[i], plural(*a), desc); + xo_close_instance(list); + } + } + xo_close_list(list); +} + +/* + * Dump pfsync statistics structure. + */ +void +pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct pfsyncstats pfsyncstat; + + if (fetch_stats("net.pfsync.stats", off, &pfsyncstat, + sizeof(pfsyncstat), kread) != 0) + return; + + xo_emit("{T:/%s}:\n", name); + xo_open_container(name); + +#define p(f, m) if (pfsyncstat.f || sflag <= 1) \ + xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) + + p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " + "{N:/packet%s received (IPv4)}\n"); + p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " + "{N:/packet%s received (IPv6)}\n"); + pfsync_acts_stats("input-histogram", "received", + &pfsyncstat.pfsyncs_iacts[0]); + p(pfsyncs_badif, "\t\t{:dropped-bad-interface/%ju} " + "{N:/packet%s discarded for bad interface}\n"); + p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " + "{N:/packet%s discarded for bad ttl}\n"); + p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " + "{N:/packet%s shorter than header}\n"); + p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " + "{N:/packet%s discarded for bad version}\n"); + p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " + "{N:/packet%s discarded for bad HMAC}\n"); + p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " + "{N:/packet%s discarded for bad action}\n"); + p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " + "{N:/packet%s discarded for short packet}\n"); + p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " + "{N:/state%s discarded for bad values}\n"); + p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " + "{N:/stale state%s}\n"); + p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " + "{N:/failed state lookup\\/insert%s}\n"); + p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " + "{N:/packet%s sent (IPv4})\n"); + p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " + "{N:/packet%s sent (IPv6})\n"); + pfsync_acts_stats("output-histogram", "sent", + &pfsyncstat.pfsyncs_oacts[0]); + p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " + "{N:/failure%s due to mbuf memory error}\n"); + p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " + "{N:/send error%s}\n"); +#undef p + xo_close_container(name); +} + +void +pflow_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct pflowstats pflowstat; + + if (fetch_stats("net.pflow.stats", off, &pflowstat, + sizeof(pflowstat), kread) != 0) + return; + + xo_emit("{T:/%s}:\n", name); + xo_open_container(name); + +#define p(f, m) if (pflowstat.f || sflag <= 1) \ + xo_emit(m, (uintmax_t)pflowstat.f, plural(pflowstat.f)) + + p(pflow_flows, "\t{:flows/%ju} {N:/flow%s sent}\n"); + p(pflow_packets, "\t{:packets/%ju} {N:/packet%s sent}\n"); + p(pflow_onomem, "\t{:nomem/%ju} " + "{N:/send failed due to mbuf memory error}\n"); + p(pflow_oerrors, "\t{:send-error/%ju} {N:/send error}\n"); +#undef p + + xo_close_container(name); +} +#endif /* PF */ + +/* + * Display a formatted value, or a '-' in the same space. + */ +static void +show_stat(const char *fmt, int width, const char *name, + u_long value, short showvalue, int div1000) +{ + const char *lsep, *rsep; + char newfmt[64]; + + lsep = ""; + if (strncmp(fmt, "LS", 2) == 0) { + lsep = " "; + fmt += 2; + } + rsep = " "; + if (strncmp(fmt, "NRS", 3) == 0) { + rsep = ""; + fmt += 3; + } + if (showvalue == 0) { + /* Print just dash. */ + xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); + return; + } + + /* + * XXX: workaround {P:} modifier can't be empty and doesn't seem to + * take args... so we need to conditionally include it in the format. + */ +#define maybe_pad(pad) do { \ + if (strlen(pad)) { \ + snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ + xo_emit(newfmt); \ + } \ +} while (0) + + if (hflag) { + char buf[5]; + + /* Format in human readable form. */ + humanize_number(buf, sizeof(buf), (int64_t)value, "", + HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL | \ + ((div1000) ? HN_DIVISOR_1000 : 0)); + maybe_pad(lsep); + snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); + xo_emit(newfmt, buf); + maybe_pad(rsep); + } else { + /* Construct the format string. */ + maybe_pad(lsep); + snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", + name, width, fmt); + xo_emit(newfmt, value); + maybe_pad(rsep); + } +} + +/* + * Find next multiaddr for a given interface name. + */ +static struct ifmaddrs * +next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) +{ + + for(; ifma != NULL; ifma = ifma->ifma_next) { + struct sockaddr_dl *sdl; + + sdl = (struct sockaddr_dl *)ifma->ifma_name; + if (ifma->ifma_addr->sa_family == family && + sdl->sdl_nlen == strlen(name) && + strncmp(sdl->sdl_data, name, sdl->sdl_nlen) == 0) + break; + } + + return (ifma); +} + +enum process_op { MEASURE, EMIT }; + +static void +process_ifa_addr(enum process_op op, struct ifaddrs *ifa, int *max_net_len, + int *max_addr_len, bool *network, bool *link) +{ + int net_len, addr_len; + const char *nn, *rn; + + if (op == EMIT) { + net_len = *max_net_len; + addr_len = *max_addr_len; + } + + switch (ifa->ifa_addr->sa_family) { + case AF_UNSPEC: + if (op == MEASURE) { + net_len = strlen("none"); + addr_len = strlen("none"); + } else { + xo_emit("{:network/%-*.*s} ", net_len, net_len, + "none"); + xo_emit("{:address/%-*.*s} ", addr_len, addr_len, + "none"); + } + break; + case AF_INET: +#ifdef INET6 + case AF_INET6: +#endif /* INET6 */ + nn = netname(ifa->ifa_addr, ifa->ifa_netmask); + rn = routename(ifa->ifa_addr, numeric_addr); + if (op == MEASURE) { + net_len = strlen(nn); + addr_len = strlen(rn); + } else { + xo_emit("{t:network/%-*s} ", net_len, nn); + xo_emit("{t:address/%-*s} ", addr_len, rn); + } + + if (network != NULL) + *network = true; + break; + case AF_LINK: + { + struct sockaddr_dl *sdl; + char linknum[sizeof("<Link#32767>")]; + + sdl = (struct sockaddr_dl *)ifa->ifa_addr; + snprintf(linknum, sizeof(linknum), "<Link#%d>", sdl->sdl_index); + if (op == MEASURE) { + net_len = strlen(linknum); + if (sdl->sdl_nlen == 0 && + sdl->sdl_alen == 0 && + sdl->sdl_slen == 0) + addr_len = 1; + else + addr_len = strlen(routename(ifa->ifa_addr, 1)); + } else { + xo_emit("{t:network/%-*.*s} ", net_len, net_len, + linknum); + if (sdl->sdl_nlen == 0 && + sdl->sdl_alen == 0 && + sdl->sdl_slen == 0) + xo_emit("{P:/%*s} ", addr_len, ""); + else + xo_emit("{t:address/%-*.*s} ", addr_len, + addr_len, routename(ifa->ifa_addr, 1)); + } + if (link != NULL) + *link = true; + break; + } + } + + if (op == MEASURE) { + if (net_len > *max_net_len) + *max_net_len = net_len; + if (addr_len > *max_addr_len) + *max_addr_len = addr_len; + } +} + +static int +max_num_len(int max_len, u_long num) +{ + int len = 2; /* include space */ + + for (; num > 10; len++) + num /= 10; + return (MAX(max_len, len)); +} + +/* + * Print a description of the network interfaces. + */ +void +intpr(void (*pfunc)(char *), int af) +{ + struct ifaddrs *ifap, *ifa; + struct ifmaddrs *ifmap, *ifma; + u_int ifn_len_max = 5, ifn_len; + u_int net_len = strlen("Network "), addr_len = strlen("Address "); + u_int npkt_len = 8, nbyte_len = 10, nerr_len = 5; + + if (interval) + return sidewaysintpr(); + + if (getifaddrs(&ifap) != 0) + xo_err(EX_OSERR, "getifaddrs"); + if (aflag && getifmaddrs(&ifmap) != 0) + xo_err(EX_OSERR, "getifmaddrs"); + + for (ifa = ifap; ifa; ifa = ifa->ifa_next) { + if (interface != NULL && + strcmp(ifa->ifa_name, interface) != 0) + continue; + if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) + continue; + ifn_len = strlen(ifa->ifa_name); + if ((ifa->ifa_flags & IFF_UP) == 0) + ++ifn_len; + ifn_len_max = MAX(ifn_len_max, ifn_len); + process_ifa_addr(MEASURE, ifa, &net_len, &addr_len, + NULL, NULL); + +#define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) + if (!hflag) { + npkt_len = max_num_len(npkt_len, IFA_STAT(ipackets)); + npkt_len = max_num_len(npkt_len, IFA_STAT(opackets)); + nerr_len = max_num_len(nerr_len, IFA_STAT(ierrors)); + nerr_len = max_num_len(nerr_len, IFA_STAT(iqdrops)); + nerr_len = max_num_len(nerr_len, IFA_STAT(collisions)); + if (dflag) + nerr_len = max_num_len(nerr_len, + IFA_STAT(oqdrops)); + if (bflag) { + nbyte_len = max_num_len(nbyte_len, + IFA_STAT(ibytes)); + nbyte_len = max_num_len(nbyte_len, + IFA_STAT(obytes)); + } + } + } + + xo_open_list("interface"); + if (!pfunc) { + xo_emit("{T:/%-*.*s}", ifn_len_max, ifn_len_max, "Name"); + xo_emit(" {T:/%5.5s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " + "{T:/%*.*s} {T:/%*.*s}", + "Mtu", net_len, net_len, "Network", addr_len, addr_len, + "Address", npkt_len, npkt_len, "Ipkts", + nerr_len, nerr_len, "Ierrs", nerr_len, nerr_len, "Idrop"); + if (bflag) + xo_emit(" {T:/%*.*s}", nbyte_len, nbyte_len, "Ibytes"); + xo_emit(" {T:/%*.*s} {T:/%*.*s}", npkt_len, npkt_len, "Opkts", + nerr_len, nerr_len, "Oerrs"); + if (bflag) + xo_emit(" {T:/%*.*s}", nbyte_len, nbyte_len, "Obytes"); + xo_emit(" {T:/%*s}", nerr_len, "Coll"); + if (dflag) + xo_emit(" {T:/%*.*s}", nerr_len, nerr_len, "Drop"); + xo_emit("\n"); + } + + for (ifa = ifap; ifa; ifa = ifa->ifa_next) { + bool network = false, link = false; + char *name, *xname, buf[IFNAMSIZ+1]; + + if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) + continue; + + name = ifa->ifa_name; + + if (pfunc) { + + (*pfunc)(name); + + /* + * Skip all ifaddrs belonging to same interface. + */ + while(ifa->ifa_next != NULL && + (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { + ifa = ifa->ifa_next; + } + continue; + } + + if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) + continue; + + xo_open_instance("interface"); + + if ((ifa->ifa_flags & IFF_UP) == 0) { + xname = stpcpy(buf, name); + *xname++ = '*'; + *xname = '\0'; + xname = buf; + } else + xname = name; + + xo_emit("{d:/%-*.*s}{etk:name}{eq:flags/0x%x}", + ifn_len_max, ifn_len_max, xname, name, ifa->ifa_flags); + +#define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) + show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0); +#undef IFA_MTU + + process_ifa_addr(EMIT, ifa, &net_len, &addr_len, + &network, &link); + + show_stat("lu", npkt_len, "received-packets", + IFA_STAT(ipackets), link|network, 1); + show_stat("lu", nerr_len, "received-errors", IFA_STAT(ierrors), + link, 1); + show_stat("lu", nerr_len, "dropped-packets", IFA_STAT(iqdrops), + link, 1); + if (bflag) + show_stat("lu", nbyte_len, "received-bytes", + IFA_STAT(ibytes), link|network, 0); + show_stat("lu", npkt_len, "sent-packets", IFA_STAT(opackets), + link|network, 1); + show_stat("lu", nerr_len, "send-errors", IFA_STAT(oerrors), + link, 1); + if (bflag) + show_stat("lu", nbyte_len, "sent-bytes", + IFA_STAT(obytes), link|network, 0); + show_stat("NRSlu", nerr_len, "collisions", IFA_STAT(collisions), + link, 1); + if (dflag) + show_stat("LSlu", nerr_len, "dropped-packets", + IFA_STAT(oqdrops), link, 1); + xo_emit("\n"); + + if (!aflag) { + xo_close_instance("interface"); + continue; + } + + /* + * Print family's multicast addresses. + */ + xo_open_list("multicast-address"); + for (ifma = next_ifma(ifmap, ifa->ifa_name, + ifa->ifa_addr->sa_family); + ifma != NULL; + ifma = next_ifma(ifma, ifa->ifa_name, + ifa->ifa_addr->sa_family)) { + const char *fmt = NULL; + + xo_open_instance("multicast-address"); + switch (ifma->ifma_addr->sa_family) { + case AF_LINK: + { + struct sockaddr_dl *sdl; + + sdl = (struct sockaddr_dl *)ifma->ifma_addr; + if (sdl->sdl_type != IFT_ETHER && + sdl->sdl_type != IFT_FDDI) + break; + } + /* FALLTHROUGH */ + case AF_INET: +#ifdef INET6 + case AF_INET6: +#endif /* INET6 */ + fmt = routename(ifma->ifma_addr, numeric_addr); + break; + } + if (fmt) { + if (Wflag) + xo_emit("{P:/%27s }" + "{t:address/%-17s/}", "", fmt); + else + xo_emit("{P:/%25s }" + "{t:address/%-17.17s/}", "", fmt); + if (ifma->ifma_addr->sa_family == AF_LINK) { + xo_emit(" {:received-packets/%8lu}", + IFA_STAT(imcasts)); + xo_emit("{P:/%*s}", bflag? 17 : 6, ""); + xo_emit(" {:sent-packets/%8lu}", + IFA_STAT(omcasts)); + } + xo_emit("\n"); + } + xo_close_instance("multicast-address"); + ifma = ifma->ifma_next; + } + xo_close_list("multicast-address"); + xo_close_instance("interface"); + } + xo_close_list("interface"); + + freeifaddrs(ifap); + if (aflag) + freeifmaddrs(ifmap); +} + +struct iftot { + u_long ift_ip; /* input packets */ + u_long ift_ie; /* input errors */ + u_long ift_id; /* input drops */ + u_long ift_op; /* output packets */ + u_long ift_oe; /* output errors */ + u_long ift_od; /* output drops */ + u_long ift_co; /* collisions */ + u_long ift_ib; /* input bytes */ + u_long ift_ob; /* output bytes */ +}; + +/* + * Obtain stats for interface(s). + */ +static void +fill_iftot(struct iftot *st) +{ + struct ifaddrs *ifap, *ifa; + bool found = false; + + if (getifaddrs(&ifap) != 0) + xo_err(EX_OSERR, "getifaddrs"); + + bzero(st, sizeof(*st)); + + for (ifa = ifap; ifa; ifa = ifa->ifa_next) { + if (ifa->ifa_addr->sa_family != AF_LINK) + continue; + if (interface) { + if (strcmp(ifa->ifa_name, interface) == 0) + found = true; + else + continue; + } + + st->ift_ip += IFA_STAT(ipackets); + st->ift_ie += IFA_STAT(ierrors); + st->ift_id += IFA_STAT(iqdrops); + st->ift_ib += IFA_STAT(ibytes); + st->ift_op += IFA_STAT(opackets); + st->ift_oe += IFA_STAT(oerrors); + st->ift_od += IFA_STAT(oqdrops); + st->ift_ob += IFA_STAT(obytes); + st->ift_co += IFA_STAT(collisions); + } + + if (interface && found == false) + xo_err(EX_DATAERR, "interface %s not found", interface); + + freeifaddrs(ifap); +} + +/* + * Set a flag to indicate that a signal from the periodic itimer has been + * caught. + */ +static sig_atomic_t signalled; +static void +catchalarm(int signo __unused) +{ + signalled = true; +} + +/* + * 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(void) +{ + struct iftot ift[2], *new, *old; + struct itimerval interval_it; + int oldmask, line; + + new = &ift[0]; + old = &ift[1]; + fill_iftot(old); + + (void)signal(SIGALRM, catchalarm); + signalled = false; + interval_it.it_interval.tv_sec = interval; + interval_it.it_interval.tv_usec = 0; + interval_it.it_value = interval_it.it_interval; + setitimer(ITIMER_REAL, &interval_it, NULL); + xo_open_list("interface-statistics"); + +banner: + xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", + interface != NULL ? interface : "(Total)", "output"); + xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " + "{T:/%10s} {T:/%5s}", + "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", + "colls"); + if (dflag) + xo_emit(" {T:/%5.5s}", "drops"); + xo_emit("\n"); + xo_flush(); + line = 0; + +loop: + if ((noutputs != 0) && (--noutputs == 0)) { + xo_close_list("interface-statistics"); + return; + } + oldmask = sigblock(sigmask(SIGALRM)); + while (!signalled) + sigpause(0); + signalled = false; + sigsetmask(oldmask); + line++; + + fill_iftot(new); + + xo_open_instance("stats"); + show_stat("lu", 10, "received-packets", + new->ift_ip - old->ift_ip, 1, 1); + show_stat("lu", 5, "received-errors", + new->ift_ie - old->ift_ie, 1, 1); + show_stat("lu", 5, "dropped-packets", + new->ift_id - old->ift_id, 1, 1); + show_stat("lu", 10, "received-bytes", + new->ift_ib - old->ift_ib, 1, 0); + show_stat("lu", 10, "sent-packets", + new->ift_op - old->ift_op, 1, 1); + show_stat("lu", 5, "send-errors", + new->ift_oe - old->ift_oe, 1, 1); + show_stat("lu", 10, "sent-bytes", + new->ift_ob - old->ift_ob, 1, 0); + show_stat("NRSlu", 5, "collisions", + new->ift_co - old->ift_co, 1, 1); + if (dflag) + show_stat("LSlu", 5, "dropped-packets", + new->ift_od - old->ift_od, 1, 1); + xo_close_instance("stats"); + xo_emit("\n"); + xo_flush(); + + if (new == &ift[0]) { + new = &ift[1]; + old = &ift[0]; + } else { + new = &ift[0]; + old = &ift[1]; + } + + if (line == 21) + goto banner; + else + goto loop; + + /* NOTREACHED */ +} |