xref: /freebsd/usr.bin/netstat/sctp.c (revision 321ae07f36f17c1a2b5128719eb6297337bc19f7)

/*-
 * Copyright (c) 2001-2007, by Weongyo Jeong. All rights reserved.
 * Copyright (c) 2011, by Michael Tuexen. 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("$FreeBSD$");

#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

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

const 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;
};

/*
 * Construct an Internet address representation.
 * If numeric_addr has been supplied, give
 * numeric value, otherwise try for symbolic name.
 */
#ifdef INET
static char *
inetname(struct in_addr *inp)
{
	char *cp;
	static char line[MAXHOSTNAMELEN];
	struct hostent *hp;
	struct netent *np;

	cp = 0;
	if (!numeric_addr && inp->s_addr != INADDR_ANY) {
		int net = inet_netof(*inp);
		int lna = inet_lnaof(*inp);

		if (lna == INADDR_ANY) {
			np = getnetbyaddr(net, AF_INET);
			if (np)
				cp = np->n_name;
		}
		if (cp == 0) {
			hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
			if (hp) {
				cp = hp->h_name;
				trimdomain(cp, strlen(cp));
			}
		}
	}
	if (inp->s_addr == INADDR_ANY)
		strcpy(line, "*");
	else if (cp) {
		strlcpy(line, cp, sizeof(line));
	} else {
		inp->s_addr = ntohl(inp->s_addr);
#define	C(x)	((u_int)((x) & 0xff))
		sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
		    C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
		inp->s_addr = htonl(inp->s_addr);
	}
	return (line);
}
#endif

#ifdef INET6
static char ntop_buf[INET6_ADDRSTRLEN];

static char *
inet6name(struct in6_addr *in6p)
{
	char *cp;
	static char line[50];
	struct hostent *hp;
	static char domain[MAXHOSTNAMELEN];
	static int first = 1;

	if (first && !numeric_addr) {
		first = 0;
		if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
		    (cp = strchr(domain, '.')))
			(void) strcpy(domain, cp + 1);
		else
			domain[0] = 0;
	}
	cp = 0;
	if (!numeric_addr && !IN6_IS_ADDR_UNSPECIFIED(in6p)) {
		hp = gethostbyaddr((char *)in6p, sizeof(*in6p), AF_INET6);
		if (hp) {
			if ((cp = strchr(hp->h_name, '.')) &&
			    !strcmp(cp + 1, domain))
				*cp = 0;
			cp = hp->h_name;
		}
	}
	if (IN6_IS_ADDR_UNSPECIFIED(in6p))
		strcpy(line, "*");
	else if (cp)
		strcpy(line, cp);
	else
		sprintf(line, "%s",
			inet_ntop(AF_INET6, (void *)in6p, ntop_buf,
				sizeof(ntop_buf)));
	return (line);
}
#endif

static void
sctp_print_address(union sctp_sockstore *address, int port, int num_port)
{
	struct servent *sp = 0;
	char line[80], *cp;
	int width;

	switch (address->sa.sa_family) {
#ifdef INET
	case AF_INET:
		sprintf(line, "%.*s.", Wflag ? 39 : 16, inetname(&address->sin.sin_addr));
		break;
#endif
#ifdef INET6
	case AF_INET6:
		sprintf(line, "%.*s.", Wflag ? 39 : 16, inet6name(&address->sin6.sin6_addr));
		break;
#endif
	default:
		sprintf(line, "%.*s.", Wflag ? 39 : 16, "");
		break;
	}
	cp = strchr(line, '\0');
	if (!num_port && port)
		sp = getservbyport((int)port, "sctp");
	if (sp || port == 0)
		sprintf(cp, "%.15s ", sp ? sp->s_name : "*");
	else
		sprintf(cp, "%d ", ntohs((u_short)port));
	width = Wflag ? 45 : 22;
	printf("%-*.*s ", width, width, line);
}

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,
    char *buf, const size_t buflen, size_t *offset, int *indent)
{
	int i, xl_total = 0, xr_total = 0, x_max;
	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;

	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("%-12s ", " ");

		if (xl != NULL) {
			sctp_print_address(&(xl->xladdr->address),
			    htons(xstcb->local_port), numeric_port);
		} else {
			if (Wflag) {
				printf("%-45s ", " ");
			} else {
				printf("%-22s ", " ");
			}
		}

		if (xr != NULL && !Lflag) {
			sctp_print_address(&(xr->xraddr->address),
			    htons(xstcb->remote_port), numeric_port);
		}

		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;
	}
}

static void
sctp_process_inpcb(struct xsctp_inpcb *xinpcb,
    char *buf, const size_t buflen, size_t *offset)
{
	int indent = 0, xladdr_total = 0, is_listening = 0;
	static int first = 1;
	const char *tname, *pname;
	struct xsctp_tcb *xstcb;
	struct xsctp_laddr *xladdr;
	size_t offset_laddr;
	int process_closed;

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

	if (first) {
		if (!Lflag) {
			printf("Active SCTP associations");
			if (aflag)
				printf(" (including servers)");
		} else
			printf("Current listen queue sizes (qlen/maxqlen)");
		putchar('\n');
		if (Lflag)
			printf("%-6.6s %-5.5s %-8.8s %-22.22s\n",
			    "Proto", "Type", "Listen", "Local Address");
		else
			if (Wflag)
				printf("%-6.6s %-5.5s %-45.45s %-45.45s %s\n",
				    "Proto", "Type",
				    "Local Address", "Foreign Address",
				    "(state)");
			else
				printf("%-6.6s %-5.5s %-22.22s %-22.22s %s\n",
				    "Proto", "Type",
				    "Local Address", "Foreign Address",
				    "(state)");
		first = 0;
	}
	xladdr = (struct xsctp_laddr *)(buf + *offset);
	if (Lflag && !is_listening) {
		sctp_skip_xinpcb_ifneed(buf, buflen, offset);
		return;
	}

	if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
		/* Can't distinguish between sctp46 and sctp6 */
		pname = "sctp46";
	} else {
		pname = "sctp4";
	}

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

	if (Lflag) {
		char buf1[9];

		snprintf(buf1, 9, "%hu/%hu", xinpcb->qlen, xinpcb->maxqlen);
		printf("%-6.6s %-5.5s ", pname, tname);
		printf("%-8.8s ", buf1);
	}

	offset_laddr = *offset;
	process_closed = 0;
retry:
	while (*offset < buflen) {
		xladdr = (struct xsctp_laddr *)(buf + *offset);
		*offset += sizeof(struct xsctp_laddr);
		if (xladdr->last) {
			if (aflag && !Lflag && (xladdr_total == 0) && process_closed) {
				printf("%-6.6s %-5.5s ", pname, tname);
				if (Wflag) {
					printf("%-91.91s CLOSED", " ");
				} else {
					printf("%-45.45s CLOSED", " ");
				}
			}
			if (process_closed || is_listening) {
				putchar('\n');
			}
			break;
		}

		if (!Lflag && !is_listening && !process_closed)
			continue;

		if (xladdr_total == 0) {
			printf("%-6.6s %-5.5s ", pname, tname);
		} else {
			putchar('\n');
			printf((Lflag) ?
			    "%-21.21s " : "%-12.12s ", " ");
		}
		sctp_print_address(&(xladdr->address),
		    htons(xinpcb->local_port), numeric_port);
		if (aflag && !Lflag && xladdr_total == 0) {
			if (Wflag) {
				if (process_closed) {
					printf("%-45.45s CLOSED", " ");
				} else {
					printf("%-45.45s LISTEN", " ");
				}
			} else {
				if (process_closed) {
					printf("%-22.22s CLOSED", " ");
				} else {
					printf("%-22.22s LISTEN", " ");
				}
			}
		}
		xladdr_total++;
	}

	xstcb = (struct xsctp_tcb *)(buf + *offset);
	*offset += sizeof(struct xsctp_tcb);
	if (aflag && (xladdr_total == 0) && xstcb->last && !process_closed) {
		process_closed = 1;
		*offset = offset_laddr;
		goto retry;
	}
	while (xstcb->last == 0 && *offset < buflen) {
		printf("%-6.6s %-5.5s ", pname, tname);
		sctp_process_tcb(xstcb, buf, buflen, offset, &indent);
		indent++;
		xstcb = (struct xsctp_tcb *)(buf + *offset);
		*offset += sizeof(struct xsctp_tcb);
	}
}

/*
 * Print a summary of SCTP connections related to an Internet
 * protocol.
 */
void
sctp_protopr(u_long off __unused,
    const char *name __unused, int af1 __unused, 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, 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) {
			if (errno != ENOENT)
				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 output 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 */