343 lines
6.9 KiB
C
343 lines
6.9 KiB
C
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/*
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tcpstat.c
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Created: June 1995 by Philip Homburg <philip@f-mnx.phicoh.com>
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*/
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#define _POSIX_C_SOURCE 2
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#define _NETBSD_SOURCE 1
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#include <inet/inet.h>
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#undef printf
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#undef send
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#include <fcntl.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/svrctl.h>
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#ifndef __minix_vmd
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#include <sys/times.h>
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#endif
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#include <net/netlib.h>
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#include <net/gen/inet.h>
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#include <netdb.h>
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#include <net/gen/socket.h>
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#include <minix/queryparam.h>
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#include <minix/com.h>
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#include <inet/generic/buf.h>
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#include <inet/generic/clock.h>
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#include <inet/generic/event.h>
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#include <inet/generic/type.h>
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#include <inet/generic/tcp.h>
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#include <inet/generic/tcp_int.h>
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u32_t system_hz;
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char *prog_name;
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tcp_conn_t tcp_conn_table[TCP_CONN_NR];
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char values[2 * sizeof(tcp_conn_table) + 1];
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int inclListen, numerical, verbose;
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void print_conn(int i, clock_t now);
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void usage(void);
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int main(int argc, char*argv[])
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{
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char *ipstat_device;
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int fd, i, r;
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char *query, *pval;
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size_t len;
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#ifdef __minix_vmd
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struct timeval uptime;
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#endif
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clock_t now;
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int fl;
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int a_flag, n_flag, v_flag;
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struct tms tmsbuf;
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system_hz = (u32_t) sysconf(_SC_CLK_TCK);
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(prog_name=strrchr(argv[0], '/')) ? prog_name++ : (prog_name=argv[0]);
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a_flag= 0;
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n_flag= 0;
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v_flag= 0;
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while ((fl= getopt(argc, argv, "?anv")) != -1)
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{
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switch(fl)
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{
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case '?':
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usage();
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case 'a':
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a_flag= 1;
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break;
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case 'n':
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n_flag= 1;
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break;
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case 'v':
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v_flag= 1;
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break;
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default:
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fprintf(stderr, "%s: getopt failed: '%c'\n",
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prog_name, fl);
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exit(1);
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}
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}
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inclListen= !!a_flag;
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numerical= !!n_flag;
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verbose= !!v_flag;
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ipstat_device= IPSTAT_DEVICE;
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if ((fd= open(ipstat_device, O_RDWR)) == -1)
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{
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fprintf(stderr, "%s: unable to open '%s': %s\n", prog_name,
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ipstat_device, strerror(errno));
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exit(1);
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}
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query= "tcp_conn_table";
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len= strlen(query);
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r= write(fd, query, len);
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if (r != len)
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{
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fprintf(stderr, "%s: write to %s failed: %s\n",
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prog_name, ipstat_device, r < 0 ? strerror(errno) :
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"short write");
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exit(1);
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}
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r= read(fd, values, sizeof(values));
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if (r == -1)
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{
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fprintf(stderr, "%s: read from %s failed: %s\n", prog_name,
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ipstat_device, strerror(errno));
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exit(1);
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}
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pval= values;
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if (paramvalue(&pval, tcp_conn_table, sizeof(tcp_conn_table)) !=
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sizeof(tcp_conn_table))
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{
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fprintf(stderr,
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"%s: unable to decode the results from queryparam\n",
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prog_name);
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exit(1);
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}
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#ifdef __minix_vmd
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/* Get the uptime in clock ticks. */
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if (sysutime(UTIME_UPTIME, &uptime) == -1)
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{
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fprintf(stderr, "%s: sysutime failed: %s\n", prog_name,
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strerror(errno));
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exit(1);
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}
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now= uptime.tv_sec * HZ + (uptime.tv_usec*HZ/1000000);
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#else /* Minix 3 */
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now= times(&tmsbuf);
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#endif
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for (i= 0; i<TCP_CONN_NR; i++)
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print_conn(i, now);
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exit(0);
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}
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void print_conn(int i, clock_t now)
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{
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tcp_conn_t *tcp_conn;
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char *addr_str;
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struct hostent *hostent;
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struct servent *servent;
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ipaddr_t a1, a2;
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tcpport_t p1, p2;
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unsigned flags;
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int no_verbose;
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clock_t rtt, artt, drtt;
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tcp_conn= &tcp_conn_table[i];
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if (!(tcp_conn->tc_flags & TCF_INUSE))
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return;
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if (tcp_conn->tc_state == TCS_LISTEN && !inclListen)
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return;
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if (tcp_conn->tc_state == TCS_CLOSED && tcp_conn->tc_fd == NULL &&
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tcp_conn->tc_senddis < now)
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{
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return;
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}
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printf("%3d", i);
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a1= tcp_conn->tc_locaddr;
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p1= tcp_conn->tc_locport;
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a2= tcp_conn->tc_remaddr;
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p2= tcp_conn->tc_remport;
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if (a1 == 0)
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addr_str= "*";
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else if (!numerical &&
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(hostent= gethostbyaddr((char *)&a1,
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sizeof(a1), AF_INET)) != NULL)
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{
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addr_str= hostent->h_name;
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}
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else
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addr_str= inet_ntoa(a1);
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printf(" %s:", addr_str);
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if (p1 == 0)
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printf("*");
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else if ((servent= getservbyport(p1, "tcp")) != NULL)
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{
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printf("%s", servent->s_name);
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}
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else
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printf("%u", ntohs(p1));
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if (tcp_conn->tc_orglisten)
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printf(" <- ");
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else
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printf(" -> ");
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if (a2 == 0)
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addr_str= "*";
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else if (!numerical &&
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(hostent= gethostbyaddr((char *)&a2,
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sizeof(a2), AF_INET)) != NULL)
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{
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addr_str= hostent->h_name;
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}
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else
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addr_str= inet_ntoa(a2);
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printf("%s:", addr_str);
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if (p2 == 0)
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printf("*");
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else if ((servent= getservbyport(p2, "tcp")) !=
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NULL)
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{
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printf("%s", servent->s_name);
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}
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else
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printf("%u", ntohs(p2));
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printf(" ");
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no_verbose= 0;
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switch(tcp_conn->tc_state)
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{
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case TCS_CLOSED: printf("CLOSED");
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if (tcp_conn->tc_senddis >= now)
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{
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printf("(time wait %d s)",
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(tcp_conn->tc_senddis-now)/system_hz);
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}
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no_verbose= 1;
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break;
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case TCS_LISTEN: printf("LISTEN"); no_verbose= 1; break;
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case TCS_SYN_RECEIVED: printf("SYN_RECEIVED"); break;
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case TCS_SYN_SENT: printf("SYN_SENT"); break;
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case TCS_ESTABLISHED: printf("ESTABLISHED"); break;
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case TCS_CLOSING: printf("CLOSING"); break;
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default: printf("state(%d)", tcp_conn->tc_state);
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break;
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}
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if (tcp_conn->tc_flags & TCF_FIN_RECV)
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printf(" F<");
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if (tcp_conn->tc_flags & TCF_FIN_SENT)
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{
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printf(" F>");
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if (tcp_conn->tc_SND_UNA == tcp_conn->tc_SND_NXT)
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printf("+");
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}
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if (tcp_conn->tc_state != TCS_CLOSED &&
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tcp_conn->tc_state != TCS_LISTEN)
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{
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printf("\n\t");
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printf("RQ: %u, SQ: %u, RWnd: %u, SWnd: %u, SWThresh: %u",
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tcp_conn->tc_RCV_NXT - tcp_conn->tc_RCV_LO,
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tcp_conn->tc_SND_NXT - tcp_conn->tc_SND_UNA,
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tcp_conn->tc_rcv_wnd,
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tcp_conn->tc_snd_cwnd - tcp_conn->tc_SND_UNA,
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tcp_conn->tc_snd_cthresh);
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}
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printf("\n");
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if (!verbose || no_verbose)
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return;
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rtt= tcp_conn->tc_rtt;
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artt= tcp_conn->tc_artt;
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drtt= tcp_conn->tc_drtt;
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printf("\tmss %u, mtu %u%s, rtt %.3f (%.3f+%d*%.3f) s\n",
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tcp_conn->tc_max_mtu-IP_TCP_MIN_HDR_SIZE,
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tcp_conn->tc_mtu,
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(tcp_conn->tc_flags & TCF_PMTU) ? "" : " (no PMTU)",
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rtt/(system_hz+0.0),
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artt/(system_hz+0.0)/TCP_RTT_SCALE, TCP_DRTT_MULT,
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drtt/(system_hz+0.0)/TCP_RTT_SCALE);
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flags= tcp_conn->tc_flags;
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printf("\tflags:");
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if (!flags)
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printf(" TCF_EMPTY");
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if (flags & TCF_INUSE)
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flags &= ~TCF_INUSE;
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if (flags & TCF_FIN_RECV)
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{
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printf(" TCF_FIN_RECV");
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flags &= ~TCF_FIN_RECV;
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}
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if (flags & TCF_RCV_PUSH)
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{
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printf(" TCF_RCV_PUSH");
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flags &= ~TCF_RCV_PUSH;
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}
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if (flags & TCF_MORE2WRITE)
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{
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printf(" TCF_MORE2WRITE");
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flags &= ~TCF_MORE2WRITE;
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}
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if (flags & TCF_SEND_ACK)
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{
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printf(" TCF_SEND_ACK");
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flags &= ~TCF_SEND_ACK;
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}
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if (flags & TCF_FIN_SENT)
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{
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printf(" TCF_FIN_SENT");
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flags &= ~TCF_FIN_SENT;
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}
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if (flags & TCF_BSD_URG)
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{
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printf(" TCF_BSD_URG");
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flags &= ~TCF_BSD_URG;
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}
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if (flags & TCF_NO_PUSH)
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{
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printf(" TCF_NO_PUSH");
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flags &= ~TCF_NO_PUSH;
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}
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if (flags & TCF_PUSH_NOW)
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{
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printf(" TCF_PUSH_NOW");
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flags &= ~TCF_PUSH_NOW;
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}
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if (flags & TCF_PMTU)
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flags &= ~TCF_PMTU;
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if (flags)
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printf(" 0x%x", flags);
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printf("\n");
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printf("\ttimer: ref %d, time %f, active %d\n",
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tcp_conn->tc_transmit_timer.tim_ref,
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(0.0+tcp_conn->tc_transmit_timer.tim_time-now)/system_hz,
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tcp_conn->tc_transmit_timer.tim_active);
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}
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void usage(void)
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{
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fprintf(stderr, "Usage: %s [-anv]\n", prog_name);
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exit(1);
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}
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/*
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* $PchId: tcpstat.c,v 1.8 2005/01/30 01:04:38 philip Exp $
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*/
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