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sctp.c

/*-
 * Copyright (c) 2001-2007, by Weongyo Jeong. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * a) Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * b) 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.
 *
 * c) Neither the name of Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 */

#if 0
#ifndef lint
static char sccsid[] = "@(#)sctp.c  0.1 (Berkeley) 4/18/2007";
#endif /* not lint */
#endif

#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/usr.bin/netstat/sctp.c,v 1.7.2.3.2.1 2008/11/25 02:59:29 kensmith Exp $");

#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/protosw.h>

#include <netinet/in.h>
#include <netinet/sctp.h>
#include <netinet/sctp_constants.h>
#include <arpa/inet.h>

#include <err.h>
#include <errno.h>
#include <libutil.h>
#include <netdb.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"

#ifdef SCTP

void  inetprint(struct in_addr *, int, const char *, int);
static void sctp_statesprint(uint32_t state);

#define     NETSTAT_SCTP_STATES_CLOSED          0x0
#define     NETSTAT_SCTP_STATES_BOUND           0x1
#define     NETSTAT_SCTP_STATES_LISTEN          0x2
#define     NETSTAT_SCTP_STATES_COOKIE_WAIT           0x3
#define     NETSTAT_SCTP_STATES_COOKIE_ECHOED   0x4
#define     NETSTAT_SCTP_STATES_ESTABLISHED           0x5
#define     NETSTAT_SCTP_STATES_SHUTDOWN_SENT   0x6
#define     NETSTAT_SCTP_STATES_SHUTDOWN_RECEIVED     0x7
#define     NETSTAT_SCTP_STATES_SHUTDOWN_ACK_SENT     0x8
#define     NETSTAT_SCTP_STATES_SHUTDOWN_PENDING      0x9

char *sctpstates[] = {
      "CLOSED",
      "BOUND",
      "LISTEN",
      "COOKIE_WAIT",
      "COOKIE_ECHOED",
      "ESTABLISHED",
      "SHUTDOWN_SENT",
      "SHUTDOWN_RECEIVED",
      "SHUTDOWN_ACK_SENT",
      "SHUTDOWN_PENDING"
};

LIST_HEAD(xladdr_list, xladdr_entry) xladdr_head;
struct xladdr_entry {
      struct xsctp_laddr *xladdr;
      LIST_ENTRY(xladdr_entry) xladdr_entries;
};

LIST_HEAD(xraddr_list, xraddr_entry) xraddr_head;
struct xraddr_entry {
        struct xsctp_raddr *xraddr;
        LIST_ENTRY(xraddr_entry) xraddr_entries;
};

static int
sctp_skip_xinpcb_ifneed(char *buf, const size_t buflen, size_t *offset)
{
      int exist_tcb = 0;
      struct xsctp_tcb *xstcb;
      struct xsctp_raddr *xraddr;
      struct xsctp_laddr *xladdr;

      while (*offset < buflen) {
            xladdr = (struct xsctp_laddr *)(buf + *offset);
            *offset += sizeof(struct xsctp_laddr);
            if (xladdr->last == 1)
                  break;
      }

      while (*offset < buflen) {
            xstcb = (struct xsctp_tcb *)(buf + *offset);
            *offset += sizeof(struct xsctp_tcb);
            if (xstcb->last == 1)
                  break;

            exist_tcb = 1;

            while (*offset < buflen) {
                  xladdr = (struct xsctp_laddr *)(buf + *offset);
                  *offset += sizeof(struct xsctp_laddr);
                  if (xladdr->last == 1)
                        break;
            }

            while (*offset < buflen) {
                  xraddr = (struct xsctp_raddr *)(buf + *offset);
                  *offset += sizeof(struct xsctp_raddr);
                  if (xraddr->last == 1)
                        break;
            }
      }

      /*
       * If Lflag is set, we don't care about the return value.
       */
      if (Lflag)
            return 0;

      return exist_tcb;
}

static void
sctp_process_tcb(struct xsctp_tcb *xstcb, const char *name,
    char *buf, const size_t buflen, size_t *offset, int *indent)
{
      int i, xl_total = 0, xr_total = 0, x_max;
      struct sockaddr *sa;
      struct xsctp_raddr *xraddr;
      struct xsctp_laddr *xladdr;
      struct xladdr_entry *prev_xl = NULL, *xl = NULL, *xl_tmp;
      struct xraddr_entry *prev_xr = NULL, *xr = NULL, *xr_tmp;
#ifdef INET6
      struct sockaddr_in6 *in6;
#endif

      LIST_INIT(&xladdr_head);
      LIST_INIT(&xraddr_head);

      /*
       * Make `struct xladdr_list' list and `struct xraddr_list' list
       * to handle the address flexibly.
       */
      while (*offset < buflen) {
            xladdr = (struct xsctp_laddr *)(buf + *offset);
            *offset += sizeof(struct xsctp_laddr);
            if (xladdr->last == 1)
                  break;

            prev_xl = xl;
            xl = malloc(sizeof(struct xladdr_entry));
            if (xl == NULL) {
                  warnx("malloc %lu bytes",
                      (u_long)sizeof(struct xladdr_entry));
                  goto out;
            }
            xl->xladdr = xladdr;
            if (prev_xl == NULL)
                  LIST_INSERT_HEAD(&xladdr_head, xl, xladdr_entries);
            else
                  LIST_INSERT_AFTER(prev_xl, xl, xladdr_entries);
            xl_total++;
      }

      while (*offset < buflen) {
            xraddr = (struct xsctp_raddr *)(buf + *offset);
            *offset += sizeof(struct xsctp_raddr);
            if (xraddr->last == 1)
                  break;

            prev_xr = xr;
            xr = malloc(sizeof(struct xraddr_entry));
            if (xr == NULL) {
                  warnx("malloc %lu bytes",
                      (u_long)sizeof(struct xraddr_entry));
                  goto out;
            }
            xr->xraddr = xraddr;
            if (prev_xr == NULL)
                  LIST_INSERT_HEAD(&xraddr_head, xr, xraddr_entries);
            else
                  LIST_INSERT_AFTER(prev_xr, xr, xraddr_entries);
            xr_total++;
      }

      /*
       * Let's print the address infos.
       */
      xl = LIST_FIRST(&xladdr_head);
      xr = LIST_FIRST(&xraddr_head);
      x_max = (xl_total > xr_total) ? xl_total : xr_total;
      for (i = 0; i < x_max; i++) {
            if (((*indent == 0) && i > 0) || *indent > 0)
                  printf("%-11s ", " ");

            if (xl != NULL) {
                  sa = &(xl->xladdr->address.sa);
                  if ((sa->sa_family) == AF_INET)
                        inetprint(&((struct sockaddr_in *)sa)->sin_addr,
                            htons(xstcb->local_port),
                            name, numeric_port);
#ifdef INET6
                  else {
                        in6 = (struct sockaddr_in6 *)sa;
                        inet6print(&in6->sin6_addr,
                            htons(xstcb->local_port),
                            name, numeric_port);
                  }
#endif
            }

            if (xr != NULL && !Lflag) {
                  sa = &(xr->xraddr->address.sa);
                  if ((sa->sa_family) == AF_INET)
                        inetprint(&((struct sockaddr_in *)sa)->sin_addr,
                            htons(xstcb->remote_port),
                            name, numeric_port);
#ifdef INET6
                  else {
                        in6 = (struct sockaddr_in6 *)sa;
                        inet6print(&in6->sin6_addr,
                            htons(xstcb->remote_port),
                            name, numeric_port);
                  }
#endif
            }

            if (xl != NULL)
                  xl = LIST_NEXT(xl, xladdr_entries);
            if (xr != NULL)
                  xr = LIST_NEXT(xr, xraddr_entries);

            if (i == 0 && !Lflag)
                  sctp_statesprint(xstcb->state);

            if (i < x_max)
                  putchar('\n');
      }

out:
      /*
       * Free the list which be used to handle the address.
       */
      xl = LIST_FIRST(&xladdr_head);
      while (xl != NULL) {
            xl_tmp = LIST_NEXT(xl, xladdr_entries);
            free(xl);
            xl = xl_tmp;
      }

      xr = LIST_FIRST(&xraddr_head);
      while (xr != NULL) {
            xr_tmp = LIST_NEXT(xr, xraddr_entries);
            free(xr);
            xr = xr_tmp;
      }
}

#ifdef SCTP_DEBUG
uint32_t sctp_pdup[64];
int sctp_pcnt = 0;
#endif

static void
sctp_process_inpcb(struct xsctp_inpcb *xinpcb, const char *name,
    char *buf, const size_t buflen, size_t *offset)
{
      int offset_backup, indent = 0, xladdr_total = 0, is_listening = 0;
      static int first = 1;
      char *tname;
      struct xsctp_tcb *xstcb;
      struct xsctp_laddr *xladdr;
      struct sockaddr *sa;
#ifdef INET6
      struct sockaddr_in6 *in6;
#endif

      if ((xinpcb->flags & SCTP_PCB_FLAGS_TCPTYPE) ==
          SCTP_PCB_FLAGS_TCPTYPE && xinpcb->maxqlen > 0)
            is_listening = 1;

      if (!Lflag && !is_listening &&
          !(xinpcb->flags & SCTP_PCB_FLAGS_CONNECTED)) {
#ifdef SCTP_DEBUG
            int i, found = 0;

            for (i = 0; i < sctp_pcnt; i++) {
                  if (sctp_pdup[i] == xinpcb->flags) {
                        found = 1;
                        break;
                  }
            }
            if (!found) {
                  sctp_pdup[sctp_pcnt++] = xinpcb->flags;
                  if (sctp_pcnt >= 64)
                        sctp_pcnt = 0;
                  printf("[0x%08x]", xinpcb->flags);
            }
#endif
            offset_backup = *offset;
            if (!sctp_skip_xinpcb_ifneed(buf, buflen, offset))
                  return;
            *offset = offset_backup;
      }

      if (first) {
            if (!Lflag) {
                  printf("Active SCTP associations");
                  if (aflag)
                        printf(" (including servers)");
            } else
                  printf("Current listen queue sizes (qlen/maxqlen)");
            putchar('\n');
            if (Aflag)
                  printf("%-8.8s ", "Socket");
            if (Lflag)
                  printf("%-5.5s %-5.5s %-8.8s %-22.22s\n",
                      "Proto", "Type", "Listen", "Local Address");
            else
                  printf((Aflag && !Wflag) ?
                      "%-5.5s %-5.5s %-18.18s %-18.18s %s\n" :
                      "%-5.5s %-5.5s %-22.22s %-22.22s %s\n",
                      "Proto", "Type",
                      "Local Address", "Foreign Address",
                      "(state)");
            first = 0;
      }
      if (Lflag && xinpcb->maxqlen == 0) {
            (int)sctp_skip_xinpcb_ifneed(buf, buflen, offset);
            return;
      }
      if (Aflag)
            printf("%8lx ", (u_long)xinpcb);

      printf("%-5.5s ", name);

      if (xinpcb->flags & SCTP_PCB_FLAGS_TCPTYPE)
            tname = "1to1";
      else if (xinpcb->flags & SCTP_PCB_FLAGS_UDPTYPE)
            tname = "1toN";
      else
            return;

      printf("%-5.5s ", tname);

      if (Lflag) {
            char buf1[9];

            snprintf(buf1, 9, "%hu/%hu", xinpcb->qlen, xinpcb->maxqlen);
            printf("%-8.8s ", buf1);
      }
      /*
       * process the local address.  This routine are used for Lflag.
       */
      while (*offset < buflen) {
            xladdr = (struct xsctp_laddr *)(buf + *offset);
            *offset += sizeof(struct xsctp_laddr);
            if (xladdr->last == 1)
                  break;

            if (!Lflag && !is_listening)
                  continue;

            if (xladdr_total != 0)
                  putchar('\n');
            if (xladdr_total > 0)
                  printf((Lflag) ?
                      "%-20.20s " : "%-11.11s ", " ");

            sa = &(xladdr->address.sa);
            if ((sa->sa_family) == AF_INET)
                  inetprint(&((struct sockaddr_in *)sa)->sin_addr,
                      htons(xinpcb->local_port), name, numeric_port);
#ifdef INET6
            else {
                  in6 = (struct sockaddr_in6 *)sa;
                  inet6print(&in6->sin6_addr,
                      htons(xinpcb->local_port), name, numeric_port);
            }
#endif

            if (!Lflag && xladdr_total == 0 && is_listening == 1)
                  printf("%-22.22s LISTEN", " ");

            xladdr_total++;
      }

      xstcb = (struct xsctp_tcb *)(buf + *offset);
      *offset += sizeof(struct xsctp_tcb);
      while (xstcb->last == 0 && *offset < buflen) {
            sctp_process_tcb(xstcb, name, buf, buflen, offset, &indent);
            indent++;
            xstcb = (struct xsctp_tcb *)(buf + *offset);
            *offset += sizeof(struct xsctp_tcb);
      }

      putchar('\n');
}

/*
 * Print a summary of SCTP connections related to an Internet
 * protocol.
 */
void
sctp_protopr(u_long off __unused,
    const char *name, int af1, int proto)
{
      char *buf;
      const char *mibvar = "net.inet.sctp.assoclist";
      size_t offset = 0;
      size_t len = 0;
      struct xsctp_inpcb *xinpcb;

      if (proto != IPPROTO_SCTP)
            return;

      if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
            if (errno != ENOENT)
                  warn("sysctl: %s", mibvar);
            return;
      }
      if ((buf = malloc(len)) == 0) {
            warnx("malloc %lu bytes", (u_long)len);
            return;
      }
      if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
            warn("sysctl: %s", mibvar);
            free(buf);
            return;
      }

      xinpcb = (struct xsctp_inpcb *)(buf + offset);
      offset += sizeof(struct xsctp_inpcb);
      while (xinpcb->last == 0 && offset < len) {
            sctp_process_inpcb(xinpcb, name, buf, (const size_t)len,
                &offset);

            xinpcb = (struct xsctp_inpcb *)(buf + offset);
            offset += sizeof(struct xsctp_inpcb);
      }

      free(buf);
}

static void
sctp_statesprint(uint32_t state)
{
      int idx;

      switch (state) {
      case SCTP_STATE_COOKIE_WAIT:
            idx = NETSTAT_SCTP_STATES_COOKIE_WAIT;
            break;
      case SCTP_STATE_COOKIE_ECHOED:
            idx = NETSTAT_SCTP_STATES_COOKIE_ECHOED;
            break;
      case SCTP_STATE_OPEN:
            idx = NETSTAT_SCTP_STATES_ESTABLISHED;
            break;
      case SCTP_STATE_SHUTDOWN_SENT:
            idx = NETSTAT_SCTP_STATES_SHUTDOWN_SENT;
            break;
      case SCTP_STATE_SHUTDOWN_RECEIVED:
            idx = NETSTAT_SCTP_STATES_SHUTDOWN_RECEIVED;
            break;
      case SCTP_STATE_SHUTDOWN_ACK_SENT:
            idx = NETSTAT_SCTP_STATES_SHUTDOWN_ACK_SENT;
            break;
      case SCTP_STATE_SHUTDOWN_PENDING:
            idx = NETSTAT_SCTP_STATES_SHUTDOWN_PENDING;
            break;
      default:
            printf("UNKNOWN 0x%08x", state);
            return;
      }

      printf("%s", sctpstates[idx]);
}

/*
 * Dump SCTP statistics structure.
 */
void
sctp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
{
      struct sctpstat sctpstat, zerostat;
      size_t len = sizeof(sctpstat);

      if (live) {
            if (zflag)
                  memset(&zerostat, 0, len);
            if (sysctlbyname("net.inet.sctp.stats", &sctpstat, &len,
                zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
                  warn("sysctl: net.inet.sctp.stats");
                  return;
            }
      } else
            kread(off, &sctpstat, len);

      printf ("%s:\n", name);

#define     p(f, m) if (sctpstat.f || sflag <= 1) \
    printf(m, (uintmax_t)sctpstat.f, plural(sctpstat.f))
#define     p1a(f, m) if (sctpstat.f || sflag <= 1) \
    printf(m, (uintmax_t)sctpstat.f)

      /*
       * input statistics
       */
      p(sctps_recvpackets, "\t%ju input packet%s\n");
      p(sctps_recvdatagrams, "\t\t%ju datagram%s\n");
      p(sctps_recvpktwithdata, "\t\t%ju packet%s that had data\n");
      p(sctps_recvsacks, "\t\t%ju input SACK chunk%s\n");
      p(sctps_recvdata, "\t\t%ju input DATA chunk%s\n");
      p(sctps_recvdupdata, "\t\t%ju duplicate DATA chunk%s\n");
      p(sctps_recvheartbeat, "\t\t%ju input HB chunk%s\n");
      p(sctps_recvheartbeatack, "\t\t%ju HB-ACK chunk%s\n");
      p(sctps_recvecne, "\t\t%ju input ECNE chunk%s\n");
      p(sctps_recvauth, "\t\t%ju input AUTH chunk%s\n");
      p(sctps_recvauthmissing, "\t\t%ju chunk%s missing AUTH\n");
      p(sctps_recvivalhmacid, "\t\t%ju invalid HMAC id%s received\n");
      p(sctps_recvivalkeyid, "\t\t%ju invalid secret id%s received\n");
      p1a(sctps_recvauthfailed, "\t\t%ju auth failed\n");
      p1a(sctps_recvexpress, "\t\t%ju fast path receives all one chunk\n");
      p1a(sctps_recvexpressm, "\t\t%ju fast path multi-part data\n");

      /*
       * output statistics
       */
      p(sctps_sendpackets, "\t%ju output packet%s\n");
      p(sctps_sendsacks, "\t\t%ju output SACK%s\n");
      p(sctps_senddata, "\t\t%ju output DATA chunk%s\n");
      p(sctps_sendretransdata, "\t\t%ju retransmitted DATA chunk%s\n");
      p(sctps_sendfastretrans, "\t\t%ju fast retransmitted DATA chunk%s\n");
      p(sctps_sendmultfastretrans, "\t\t%ju FR'%s that happened more "
          "than once to same chunk\n");
      p(sctps_sendheartbeat, "\t\t%ju intput HB chunk%s\n");
      p(sctps_sendecne, "\t\t%ju output ECNE chunk%s\n");
      p(sctps_sendauth, "\t\t%ju output AUTH chunk%s\n");
      p1a(sctps_senderrors, "\t\t%ju ip_output error counter\n");

      /*
       * PCKDROPREP statistics
       */
      printf("\tPacket drop statistics:\n");
      p1a(sctps_pdrpfmbox, "\t\t%ju from middle box\n");
      p1a(sctps_pdrpfehos, "\t\t%ju from end host\n");
      p1a(sctps_pdrpmbda, "\t\t%ju with data\n");
      p1a(sctps_pdrpmbct, "\t\t%ju non-data, non-endhost\n");
      p1a(sctps_pdrpbwrpt, "\t\t%ju non-endhost, bandwidth rep only\n");
      p1a(sctps_pdrpcrupt, "\t\t%ju not enough for chunk header\n");
      p1a(sctps_pdrpnedat, "\t\t%ju not enough data to confirm\n");
      p1a(sctps_pdrppdbrk, "\t\t%ju where process_chunk_drop said break\n");
      p1a(sctps_pdrptsnnf, "\t\t%ju failed to find TSN\n");
      p1a(sctps_pdrpdnfnd, "\t\t%ju attempt reverse TSN lookup\n");
      p1a(sctps_pdrpdiwnp, "\t\t%ju e-host confirms zero-rwnd\n");
      p1a(sctps_pdrpdizrw, "\t\t%ju midbox confirms no space\n");
      p1a(sctps_pdrpbadd, "\t\t%ju data did not match TSN\n");
      p(sctps_pdrpmark, "\t\t%ju TSN'%s marked for Fast Retran\n");

      /*
       * Timeouts
       */
      printf("\tTimeouts:\n");
      p(sctps_timoiterator, "\t\t%ju iterator timer%s fired\n");
      p(sctps_timodata, "\t\t%ju T3 data time out%s\n");
      p(sctps_timowindowprobe, "\t\t%ju window probe (T3) timer%s fired\n");
      p(sctps_timoinit, "\t\t%ju INIT timer%s fired\n");
      p(sctps_timosack, "\t\t%ju sack timer%s fired\n");
      p(sctps_timoshutdown, "\t\t%ju shutdown timer%s fired\n");
      p(sctps_timoheartbeat, "\t\t%ju heartbeat timer%s fired\n");
      p1a(sctps_timocookie, "\t\t%ju a cookie timeout fired\n");
      p1a(sctps_timosecret, "\t\t%ju an endpoint changed its cookie"
          "secret\n");
      p(sctps_timopathmtu, "\t\t%ju PMTU timer%s fired\n");
      p(sctps_timoshutdownack, "\t\t%ju shutdown ack timer%s fired\n");
      p(sctps_timoshutdownguard, "\t\t%ju shutdown guard timer%s fired\n");
      p(sctps_timostrmrst, "\t\t%ju stream reset timer%s fired\n");
      p(sctps_timoearlyfr, "\t\t%ju early FR timer%s fired\n");
      p1a(sctps_timoasconf, "\t\t%ju an asconf timer fired\n");
      p1a(sctps_timoautoclose, "\t\t%ju auto close timer fired\n");
      p(sctps_timoassockill, "\t\t%ju asoc free timer%s expired\n");
      p(sctps_timoinpkill, "\t\t%ju inp free timer%s expired\n");

#if 0
      /*
       * Early fast retransmission counters
       */
      p(sctps_earlyfrstart, "\t%ju TODO:sctps_earlyfrstart\n");
      p(sctps_earlyfrstop, "\t%ju TODO:sctps_earlyfrstop\n");
      p(sctps_earlyfrmrkretrans, "\t%ju TODO:sctps_earlyfrmrkretrans\n");
      p(sctps_earlyfrstpout, "\t%ju TODO:sctps_earlyfrstpout\n");
      p(sctps_earlyfrstpidsck1, "\t%ju TODO:sctps_earlyfrstpidsck1\n");
      p(sctps_earlyfrstpidsck2, "\t%ju TODO:sctps_earlyfrstpidsck2\n");
      p(sctps_earlyfrstpidsck3, "\t%ju TODO:sctps_earlyfrstpidsck3\n");
      p(sctps_earlyfrstpidsck4, "\t%ju TODO:sctps_earlyfrstpidsck4\n");
      p(sctps_earlyfrstrid, "\t%ju TODO:sctps_earlyfrstrid\n");
      p(sctps_earlyfrstrout, "\t%ju TODO:sctps_earlyfrstrout\n");
      p(sctps_earlyfrstrtmr, "\t%ju TODO:sctps_earlyfrstrtmr\n");
#endif

      /*
       * Others
       */
      p1a(sctps_hdrops, "\t%ju packet shorter than header\n");
      p1a(sctps_badsum, "\t%ju checksum error\n");
      p1a(sctps_noport, "\t%ju no endpoint for port\n");
      p1a(sctps_badvtag, "\t%ju bad v-tag\n");
      p1a(sctps_badsid, "\t%ju bad SID\n");
      p1a(sctps_nomem, "\t%ju no memory\n");
      p1a(sctps_fastretransinrtt, "\t%ju number of multiple FR in a RTT "
          "window\n");
#if 0
      p(sctps_markedretrans, "\t%ju TODO:sctps_markedretrans\n");
#endif
      p1a(sctps_naglesent, "\t%ju RFC813 allowed sending\n");
      p1a(sctps_naglequeued, "\t%ju RFC813 does not allow sending\n");
      p1a(sctps_maxburstqueued, "\t%ju times max burst prohibited sending\n");
      p1a(sctps_ifnomemqueued, "\t%ju look ahead tells us no memory in "
          "interface\n");
      p(sctps_windowprobed, "\t%ju number%s of window probes sent\n");
      p(sctps_lowlevelerr, "\t%ju time%s an output error to clamp "
          "down on next user send\n");
      p(sctps_lowlevelerrusr, "\t%ju time%s sctp_senderrors were "
          "caused from a user\n");
      p(sctps_datadropchklmt, "\t%ju number of in data drop%s due to "
          "chunk limit reached\n");
      p(sctps_datadroprwnd, "\t%ju number of in data drop%s due to rwnd "
          "limit reached\n");
      p(sctps_ecnereducedcwnd, "\t%ju time%s a ECN reduced "
          "the cwnd\n");
      p1a(sctps_vtagexpress, "\t%ju used express lookup via vtag\n");
      p1a(sctps_vtagbogus, "\t%ju collision in express lookup\n");
      p(sctps_primary_randry, "\t%ju time%s the sender ran dry "
          "of user data on primary\n");
      p1a(sctps_cmt_randry, "\t%ju same for above\n");
      p(sctps_slowpath_sack, "\t%ju sack%s the slow way\n");
      p(sctps_wu_sacks_sent, "\t%ju window update only sack%s sent\n");
      p(sctps_sends_with_flags, "\t%ju send%s with sinfo_flags !=0\n");
      p(sctps_sends_with_unord, "\t%ju unordered send%s\n");
      p(sctps_sends_with_eof, "\t%ju send%s with EOF flag set\n");
      p(sctps_sends_with_abort, "\t%ju send%s with ABORT flag set\n");
      p(sctps_protocol_drain_calls, "\t%ju time%s protocol drain called\n");
      p(sctps_protocol_drains_done, "\t%ju time%s we did a protocol "
          "drain\n");
      p(sctps_read_peeks, "\t%ju time%s recv was called with peek\n");
      p(sctps_cached_chk, "\t%ju cached chunk%s used\n");
      p1a(sctps_cached_strmoq, "\t%ju cached stream oq's used\n");
      p(sctps_left_abandon, "\t%ju unread message%s abandonded by close\n");
      p1a(sctps_send_burst_avoid, "\t%ju send burst avoidance, already "
          "max burst inflight to net\n");
      p1a(sctps_send_cwnd_avoid, "\t%ju send cwnd full avoidance, already "
          "max burst inflight to net\n");
      p(sctps_fwdtsn_map_over, "\t%ju number of map array over-run%s via "
          "fwd-tsn's\n");

#undef p
#undef p1a
}

#endif /* SCTP */

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