fix network # printout

[unix-history] / usr / src / usr.bin / netstat / if.c

#ifndef lint
static char sccsid[] = "@(#)if.c        4.3 82/10/07";
#endif

#include <sys/types.h>
#include <sys/socket.h>
#include <net/in.h>
#include <net/if.h>
#include <stdio.h>

extern  int kmem;
extern  int tflag;
extern  int nflag;
extern  char *routename();

/*
* Print a description of the network interfaces.
*/
intpr(interval, ifnetaddr)
       int interval;
       off_t ifnetaddr;
{
       struct ifnet ifnet;
       char name[16];

       if (ifnetaddr == 0) {
               printf("ifnet: symbol not defined\n");
               return;
       }
       if (interval) {
               sidewaysintpr(interval, ifnetaddr);
               return;
       }
       klseek(kmem, ifnetaddr, 0);
       read(kmem, &ifnetaddr, sizeof ifnetaddr);
       printf("%-5.5s %-5.5s %-10.10s  %-12.12s %-7.7s %-5.5s %-7.7s %-5.5s",
               "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
               "Opkts", "Oerrs");
       printf(" %-6.6s", "Collis");
       if (tflag)
               printf(" %-6.6s", "Timer");
       putchar('\n');
       while (ifnetaddr) {
               struct sockaddr_in *sin;
               register char *cp;
               char *index();
               struct in_addr in, inet_makeaddr();

               klseek(kmem, ifnetaddr, 0);
               read(kmem, &ifnet, sizeof ifnet);
               klseek(kmem, (int)ifnet.if_name, 0);
               read(kmem, name, 16);
               name[15] = '\0';
               cp = index(name, '\0');
               *cp++ = ifnet.if_unit + '0';
               if ((ifnet.if_flags&IFF_UP) == 0)
                       *cp++ = '*';
               *cp = '\0';
               printf("%-5.5s %-5d ", name, ifnet.if_mtu);
               sin = (struct sockaddr_in *)&ifnet.if_addr;
               in = inet_makeaddr(ifnet.if_net, INADDR_ANY);
               printf("%-10.10s  ", routename(in));
               printf("%-12.12s %-7d %-5d %-7d %-5d %-6d",
                   routename(sin->sin_addr),
                   ifnet.if_ipackets, ifnet.if_ierrors,
                   ifnet.if_opackets, ifnet.if_oerrors,
                   ifnet.if_collisions);
               if (tflag)
                       printf(" %-6d", ifnet.if_timer);
               putchar('\n');
               ifnetaddr = (off_t) ifnet.if_next;
       }
}

#define MAXIF   10
struct  iftot {
       char    ift_name[16];           /* interface name */
       int     ift_ip;                 /* input packets */
       int     ift_ie;                 /* input errors */
       int     ift_op;                 /* output packets */
       int     ift_oe;                 /* output errors */
       int     ift_co;                 /* collisions */
} iftot[MAXIF];

/*
* Print a running summary of interface statistics.
* Repeat display every interval seconds, showing
* statistics collected over that interval.  First
* line printed at top of screen is always cumulative.
*/
sidewaysintpr(interval, off)
       int interval;
       off_t off;
{
       struct ifnet ifnet;
       off_t firstifnet;
       extern char _sobuf[];
       register struct iftot *ip, *total;
       register int line;
       struct iftot *lastif, *sum, *interesting;
       int maxtraffic;

       setbuf(stdout, _sobuf);
       klseek(kmem, off, 0);
       read(kmem, &firstifnet, sizeof (off_t));
       lastif = iftot;
       sum = iftot + MAXIF - 1;
       total = sum - 1;
       for (off = firstifnet, ip = iftot; off;) {
               char *cp;

               klseek(kmem, off, 0);
               read(kmem, &ifnet, sizeof ifnet);
               klseek(kmem, (int)ifnet.if_name, 0);
               ip->ift_name[0] = '(';
               read(kmem, ip->ift_name + 1, 15);
               ip->ift_name[15] = '\0';
               cp = index(ip->ift_name, '\0');
               sprintf(cp, "%d)", ifnet.if_unit);
               ip++;
               if (ip >= iftot + MAXIF - 2)
                       break;
               off = (off_t) ifnet.if_next;
       }
       lastif = ip;
       interesting = iftot;
banner:
       printf("    input   %-6.6s    output       ", interesting->ift_name);
       if (lastif - iftot > 0)
               printf("    input   (Total)    output       ");
       for (ip = iftot; ip < iftot + MAXIF; ip++) {
               ip->ift_ip = 0;
               ip->ift_ie = 0;
               ip->ift_op = 0;
               ip->ift_oe = 0;
               ip->ift_co = 0;
       }
       putchar('\n');
       printf("%-7.7s %-5.5s %-7.7s %-5.5s %-5.5s ",
               "packets", "errs", "packets", "errs", "colls");
       if (lastif - iftot > 0)
               printf("%-7.7s %-5.5s %-7.7s %-5.5s %-5.5s ",
                       "packets", "errs", "packets", "errs", "colls");
       putchar('\n');
       fflush(stdout);
       line = 0;
loop:
       sum->ift_ip = 0;
       sum->ift_ie = 0;
       sum->ift_op = 0;
       sum->ift_oe = 0;
       sum->ift_co = 0;
       for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
               klseek(kmem, off, 0);
               read(kmem, &ifnet, sizeof ifnet);
               if (ip == interesting)
                       printf("%-7d %-5d %-7d %-5d %-5d ",
                               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);
               ip->ift_ip = ifnet.if_ipackets;
               ip->ift_ie = ifnet.if_ierrors;
               ip->ift_op = ifnet.if_opackets;
               ip->ift_oe = ifnet.if_oerrors;
               ip->ift_co = ifnet.if_collisions;
               sum->ift_ip += ip->ift_ip;
               sum->ift_ie += ip->ift_ie;
               sum->ift_op += ip->ift_op;
               sum->ift_oe += ip->ift_oe;
               sum->ift_co += ip->ift_co;
               off = (off_t) ifnet.if_next;
       }
       if (lastif - iftot > 0)
               printf("%-7d %-5d %-7d %-5d %-5d\n",
                       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);
       *total = *sum;
       fflush(stdout);
       line++;
       if (interval)
               sleep(interval);
       if (line == 21)
               goto banner;
       goto loop;
       /*NOTREACHED*/
}