[mirror_frr.git] / zebra / if_ioctl_solaris.c

/*
 * Interface looking up by ioctl () on Solaris.
 * Copyright (C) 1997, 98 Kunihiro Ishiguro
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * GNU Zebra is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <zebra.h>

#ifdef SUNOS_5

#include "if.h"
#include "sockunion.h"
#include "prefix.h"
#include "ioctl.h"
#include "connected.h"
#include "memory.h"
#include "zebra_memory.h"
#include "log.h"
#include "privs.h"
#include "vrf.h"
#include "vty.h"
#include "lib_errors.h"

#include "zebra/interface.h"
#include "zebra/ioctl_solaris.h"
#include "zebra/rib.h"
#include "zebra/rt.h"
#include "zebra/zebra_errors.h"

static int if_get_addr(struct interface *, struct sockaddr *, const char *);
static void interface_info_ioctl(struct interface *);
extern struct zebra_privs_t zserv_privs;

static int interface_list_ioctl(int af)
{
	int ret;
	int sock;
#define IFNUM_BASE 32
	struct lifnum lifn;
	int ifnum;
	struct lifreq *lifreq;
	struct lifconf lifconf;
	struct interface *ifp;
	int n;
	size_t needed, lastneeded = 0;
	char *buf = NULL;

	frr_with_privs(&zserv_privs) {
		sock = socket(af, SOCK_DGRAM, 0);
	}

	if (sock < 0) {
		flog_err_sys(EC_LIB_SOCKET, "Can't make %s socket stream: %s",
			     (af == AF_INET ? "AF_INET" : "AF_INET6"),
			     safe_strerror(errno));
		return -1;
	}

calculate_lifc_len:
	frr_with_privs(&zserv_privs) {
		lifn.lifn_family = af;
		lifn.lifn_flags = LIFC_NOXMIT;
		/* we want NOXMIT interfaces too */
		ret = ioctl(sock, SIOCGLIFNUM, &lifn);
	}

	if (ret < 0) {
		flog_err_sys(EC_LIB_SYSTEM_CALL,
			     "interface_list_ioctl: SIOCGLIFNUM failed %s",
			     safe_strerror(errno));
		close(sock);
		return -1;
	}
	ifnum = lifn.lifn_count;

	/*
	 * When calculating the buffer size needed, add a small number
	 * of interfaces to those we counted.  We do this to capture
	 * the interface status of potential interfaces which may have
	 * been plumbed between the SIOCGLIFNUM and the SIOCGLIFCONF.
	 */
	needed = (ifnum + 4) * sizeof(struct lifreq);
	if (needed > lastneeded || needed < lastneeded / 2) {
		if (buf != NULL)
			XFREE(MTYPE_TMP, buf);
		buf = XMALLOC(MTYPE_TMP, needed);
	}
	lastneeded = needed;

	lifconf.lifc_family = af;
	lifconf.lifc_flags = LIFC_NOXMIT;
	lifconf.lifc_len = needed;
	lifconf.lifc_buf = buf;

	frr_with_privs(&zserv_privs) {
		ret = ioctl(sock, SIOCGLIFCONF, &lifconf);
	}

	if (ret < 0) {
		if (errno == EINVAL)
			goto calculate_lifc_len;

		flog_err_sys(EC_LIB_SYSTEM_CALL, "SIOCGLIFCONF: %s",
			     safe_strerror(errno));
		goto end;
	}

	/* Allocate interface. */
	lifreq = lifconf.lifc_req;

	for (n = 0; n < lifconf.lifc_len; n += sizeof(struct lifreq)) {
		/* we treat Solaris logical interfaces as addresses, because
		 * that is
		 * how PF_ROUTE on Solaris treats them. Hence we can not
		 * directly use
		 * the lifreq_name to get the ifp.  We need to normalise the
		 * name
		 * before attempting get.
		 *
		 * Solaris logical interface names are in the form of:
		 * <interface name>:<logical interface id>
		 */
		unsigned int normallen = 0;
		uint64_t lifflags;

		/* We should exclude ~IFF_UP interfaces, as we'll find out about
		 * them
		 * coming up later through RTM_NEWADDR message on the route
		 * socket.
		 */
		if (if_get_flags_direct(lifreq->lifr_name, &lifflags,
					lifreq->lifr_addr.ss_family)
		    || !CHECK_FLAG(lifflags, IFF_UP)) {
			lifreq++;
			continue;
		}

		/* Find the normalised name */
		while ((normallen < sizeof(lifreq->lifr_name))
		       && (*(lifreq->lifr_name + normallen) != '\0')
		       && (*(lifreq->lifr_name + normallen) != ':'))
			normallen++;

		ifp = if_get_by_name(lifreq->lifr_name, VRF_DEFAULT);

		if (lifreq->lifr_addr.ss_family == AF_INET)
			ifp->flags |= IFF_IPV4;

		if (lifreq->lifr_addr.ss_family == AF_INET6) {
			ifp->flags |= IFF_IPV6;
		}

		if_add_update(ifp);

		interface_info_ioctl(ifp);

		/* If a logical interface pass the full name so it can be
		 * as a label on the address
		 */
		if (*(lifreq->lifr_name + normallen) != '\0')
			if_get_addr(ifp, (struct sockaddr *)&lifreq->lifr_addr,
				    lifreq->lifr_name);
		else
			if_get_addr(ifp, (struct sockaddr *)&lifreq->lifr_addr,
				    NULL);

		/* Poke the interface flags. Lets IFF_UP mangling kick in */
		if_flags_update(ifp, ifp->flags);

		lifreq++;
	}

end:
	close(sock);
	XFREE(MTYPE_TMP, lifconf.lifc_buf);
	return ret;
}

/* Get interface's index by ioctl. */
static int if_get_index(struct interface *ifp)
{
	int ret;
	struct lifreq lifreq;

	lifreq_set_name(&lifreq, ifp->name);

	if (ifp->flags & IFF_IPV4)
		ret = AF_IOCTL(AF_INET, SIOCGLIFINDEX, (caddr_t)&lifreq);
	else if (ifp->flags & IFF_IPV6)
		ret = AF_IOCTL(AF_INET6, SIOCGLIFINDEX, (caddr_t)&lifreq);
	else
		ret = -1;

	if (ret < 0) {
		flog_err_sys(EC_LIB_SYSTEM_CALL, "SIOCGLIFINDEX(%s) failed",
			     ifp->name);
		return ret;
	}

/* OK we got interface index. */
#ifdef ifr_ifindex
	if_set_index(ifp, lifreq.lifr_ifindex);
#else
	if_set_index(ifp, lifreq.lifr_index);
#endif
	return ifp->ifindex;
}


/* Interface address lookup by ioctl.  This function only looks up
   IPv4 address. */
#define ADDRLEN(sa)                                                            \
	(((sa)->sa_family == AF_INET ? sizeof(struct sockaddr_in)              \
				     : sizeof(struct sockaddr_in6)))

#define SIN(s) ((struct sockaddr_in *)(s))
#define SIN6(s) ((struct sockaddr_in6 *)(s))

/* Retrieve address information for the given ifp */
static int if_get_addr(struct interface *ifp, struct sockaddr *addr,
		       const char *label)
{
	int ret;
	struct lifreq lifreq;
	struct sockaddr_storage mask, dest;
	char *dest_pnt = NULL;
	uint8_t prefixlen = 0;
	afi_t af;
	int flags = 0;

	/* Interface's name and address family.
	 * We need to use the logical interface name / label, if we've been
	 * given one, in order to get the right address
	 */
	strlcpy(lifreq.lifr_name, (label ? label : ifp->name),
		sizeof(lifreq.lifr_name));

	/* Interface's address. */
	memcpy(&lifreq.lifr_addr, addr, ADDRLEN(addr));
	af = addr->sa_family;

	/* Point to point or broad cast address pointer init. */
	dest_pnt = NULL;

	if (AF_IOCTL(af, SIOCGLIFDSTADDR, (caddr_t)&lifreq) >= 0) {
		memcpy(&dest, &lifreq.lifr_dstaddr, ADDRLEN(addr));
		if (af == AF_INET)
			dest_pnt = (char *)&(SIN(&dest)->sin_addr);
		else
			dest_pnt = (char *)&(SIN6(&dest)->sin6_addr);
		flags = ZEBRA_IFA_PEER;
	}

	if (af == AF_INET) {
		ret = if_ioctl(SIOCGLIFNETMASK, (caddr_t)&lifreq);

		if (ret < 0) {
			if (errno != EADDRNOTAVAIL) {
				flog_err_sys(EC_LIB_SYSTEM_CALL,
					     "SIOCGLIFNETMASK (%s) fail: %s",
					     ifp->name, safe_strerror(errno));
				return ret;
			}
			return 0;
		}
		memcpy(&mask, &lifreq.lifr_addr, ADDRLEN(addr));

		prefixlen = ip_masklen(SIN(&mask)->sin_addr);
		if (!dest_pnt
		    && (if_ioctl(SIOCGLIFBRDADDR, (caddr_t)&lifreq) >= 0)) {
			memcpy(&dest, &lifreq.lifr_broadaddr,
			       sizeof(struct sockaddr_in));
			dest_pnt = (char *)&SIN(&dest)->sin_addr;
		}
	} else if (af == AF_INET6) {
		if (if_ioctl_ipv6(SIOCGLIFSUBNET, (caddr_t)&lifreq) < 0) {
			if (ifp->flags & IFF_POINTOPOINT)
				prefixlen = IPV6_MAX_BITLEN;
			else
				flog_err_sys(EC_LIB_SYSTEM_CALL,
					     "SIOCGLIFSUBNET (%s) fail: %s",
					     ifp->name, safe_strerror(errno));
		} else {
			prefixlen = lifreq.lifr_addrlen;
		}
	}

	/* Set address to the interface. */
	if (af == AF_INET)
		connected_add_ipv4(ifp, flags, &SIN(addr)->sin_addr, prefixlen,
				   (struct in_addr *)dest_pnt, label,
				   METRIC_MAX);
	else if (af == AF_INET6)
		connected_add_ipv6(ifp, flags, &SIN6(addr)->sin6_addr, NULL,
				   prefixlen, label, METRIC_MAX);

	return 0;
}

/* Fetch interface information via ioctl(). */
static void interface_info_ioctl(struct interface *ifp)
{
	if_get_index(ifp);
	if_get_flags(ifp);
	if_get_mtu(ifp);
	if_get_metric(ifp);
}

/* Lookup all interface information. */
void interface_list(struct zebra_ns *zns)
{
	if (zns->ns_id != NS_DEFAULT) {
		zlog_debug("interface_list: ignore NS %u", zns->ns_id);
		return;
	}
	interface_list_ioctl(AF_INET);
	interface_list_ioctl(AF_INET6);
	interface_list_ioctl(AF_UNSPEC);
}

struct connected *if_lookup_linklocal(struct interface *ifp)
{
	struct listnode *node;
	struct connected *ifc;

	if (ifp == NULL)
		return NULL;

	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) {
		if ((ifc->address->family == AF_INET6)
		    && (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6)))
			return ifc;
	}

	return NULL;
}

#endif /* SUNOS_5 */
Commit	Line	Data
8842468c	1	/*
	2	* Interface looking up by ioctl () on Solaris.
	3	* Copyright (C) 1997, 98 Kunihiro Ishiguro
	4	*
	5	* This file is part of GNU Zebra.
	6	*
	7	* GNU Zebra is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2, or (at your option) any
	10	* later version.
	11	*
	12	* GNU Zebra is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
896014f4 DL	17	* You should have received a copy of the GNU General Public License along
	18	* with this program; see the file COPYING; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
8842468c	20	*/
	21
	22	#include <zebra.h>
	23
ddfeb486 DL	24	#ifdef SUNOS_5
ddfeb486 DL	25
8842468c	26	#include "if.h"
	27	#include "sockunion.h"
	28	#include "prefix.h"
	29	#include "ioctl.h"
	30	#include "connected.h"
	31	#include "memory.h"
4a1ab8e4	32	#include "zebra_memory.h"
8842468c	33	#include "log.h"
48a46fa0	34	#include "privs.h"
8f7d9fc0	35	#include "vrf.h"
82283592	36	#include "vty.h"
174482ef	37	#include "lib_errors.h"
8842468c	38
8842468c	39	#include "zebra/interface.h"
8d610213	40	#include "zebra/ioctl_solaris.h"
8f7d9fc0	41	#include "zebra/rib.h"
ae9eebca	42	#include "zebra/rt.h"
364fed6b	43	#include "zebra/zebra_errors.h"
8842468c	44
d62a17ae	45	static int if_get_addr(struct interface , struct sockaddr , const char *);
d62a17ae	46	static void interface_info_ioctl(struct interface *);
48a46fa0	47	extern struct zebra_privs_t zserv_privs;
8842468c	48
d62a17ae	49	static int interface_list_ioctl(int af)
8842468c	50	{
d62a17ae	51	int ret;
d62a17ae	52	int sock;
8842468c	53	#define IFNUM_BASE 32
d62a17ae	54	struct lifnum lifn;
	55	int ifnum;
	56	struct lifreq *lifreq;
	57	struct lifconf lifconf;
	58	struct interface *ifp;
	59	int n;
d62a17ae	60	size_t needed, lastneeded = 0;
	61	char *buf = NULL;
	62
0cf6db21	63	frr_with_privs(&zserv_privs) {
01b9e3fd	64	sock = socket(af, SOCK_DGRAM, 0);
6bb30c2c	65	}
d62a17ae	66
6bb30c2c	67	if (sock < 0) {
450971aa	68	flog_err_sys(EC_LIB_SOCKET, "Can't make %s socket stream: %s",
9df414fe QY	69	(af == AF_INET ? "AF_INET" : "AF_INET6"),
9df414fe QY	70	safe_strerror(errno));
6bb30c2c DL	71	return -1;
6bb30c2c DL	72	}
d62a17ae	73
6bb30c2c	74	calculate_lifc_len:
0cf6db21	75	frr_with_privs(&zserv_privs) {
01b9e3fd	76	lifn.lifn_family = af;
6bb30c2c DL	77	lifn.lifn_flags = LIFC_NOXMIT;
6bb30c2c DL	78	/* we want NOXMIT interfaces too */
01b9e3fd	79	ret = ioctl(sock, SIOCGLIFNUM, &lifn);
01b9e3fd	80	}
d62a17ae	81
d62a17ae	82	if (ret < 0) {
450971aa	83	flog_err_sys(EC_LIB_SYSTEM_CALL,
9df414fe	84	"interface_list_ioctl: SIOCGLIFNUM failed %s",
e991eff5	85	safe_strerror(errno));
d62a17ae	86	close(sock);
	87	return -1;
	88	}
	89	ifnum = lifn.lifn_count;
	90
	91	/*
	92	* When calculating the buffer size needed, add a small number
	93	* of interfaces to those we counted. We do this to capture
	94	* the interface status of potential interfaces which may have
	95	* been plumbed between the SIOCGLIFNUM and the SIOCGLIFCONF.
	96	*/
	97	needed = (ifnum + 4) * sizeof(struct lifreq);
	98	if (needed > lastneeded \|\| needed < lastneeded / 2) {
	99	if (buf != NULL)
	100	XFREE(MTYPE_TMP, buf);
0ce1ca80	101	buf = XMALLOC(MTYPE_TMP, needed);
d62a17ae	102	}
	103	lastneeded = needed;
	104
	105	lifconf.lifc_family = af;
	106	lifconf.lifc_flags = LIFC_NOXMIT;
	107	lifconf.lifc_len = needed;
	108	lifconf.lifc_buf = buf;
	109
0cf6db21	110	frr_with_privs(&zserv_privs) {
6bb30c2c DL	111	ret = ioctl(sock, SIOCGLIFCONF, &lifconf);
6bb30c2c DL	112	}
d62a17ae	113
	114	if (ret < 0) {
	115	if (errno == EINVAL)
6bb30c2c	116	goto calculate_lifc_len;
d62a17ae	117
450971aa	118	flog_err_sys(EC_LIB_SYSTEM_CALL, "SIOCGLIFCONF: %s",
9df414fe	119	safe_strerror(errno));
d62a17ae	120	goto end;
	121	}
	122
d62a17ae	123	/* Allocate interface. */
	124	lifreq = lifconf.lifc_req;
	125
	126	for (n = 0; n < lifconf.lifc_len; n += sizeof(struct lifreq)) {
	127	/* we treat Solaris logical interfaces as addresses, because
	128	* that is
	129	* how PF_ROUTE on Solaris treats them. Hence we can not
	130	* directly use
	131	* the lifreq_name to get the ifp. We need to normalise the
	132	* name
	133	* before attempting get.
	134	*
	135	* Solaris logical interface names are in the form of:
	136	* <interface name>:<logical interface id>
	137	*/
	138	unsigned int normallen = 0;
	139	uint64_t lifflags;
	140
	141	/* We should exclude ~IFF_UP interfaces, as we'll find out about
	142	* them
	143	* coming up later through RTM_NEWADDR message on the route
	144	* socket.
	145	*/
	146	if (if_get_flags_direct(lifreq->lifr_name, &lifflags,
	147	lifreq->lifr_addr.ss_family)
	148	\|\| !CHECK_FLAG(lifflags, IFF_UP)) {
	149	lifreq++;
	150	continue;
	151	}
	152
	153	/* Find the normalised name */
	154	while ((normallen < sizeof(lifreq->lifr_name))
	155	&& (*(lifreq->lifr_name + normallen) != '\0')
	156	&& (*(lifreq->lifr_name + normallen) != ':'))
	157	normallen++;
	158
a36898e7	159	ifp = if_get_by_name(lifreq->lifr_name, VRF_DEFAULT);
d62a17ae	160
	161	if (lifreq->lifr_addr.ss_family == AF_INET)
	162	ifp->flags \|= IFF_IPV4;
	163
	164	if (lifreq->lifr_addr.ss_family == AF_INET6) {
	165	ifp->flags \|= IFF_IPV6;
	166	}
	167
	168	if_add_update(ifp);
	169
	170	interface_info_ioctl(ifp);
	171
	172	/* If a logical interface pass the full name so it can be
	173	* as a label on the address
	174	*/
	175	if (*(lifreq->lifr_name + normallen) != '\0')
	176	if_get_addr(ifp, (struct sockaddr *)&lifreq->lifr_addr,
	177	lifreq->lifr_name);
	178	else
	179	if_get_addr(ifp, (struct sockaddr *)&lifreq->lifr_addr,
	180	NULL);
	181
	182	/* Poke the interface flags. Lets IFF_UP mangling kick in */
	183	if_flags_update(ifp, ifp->flags);
	184
	185	lifreq++;
	186	}
8842468c	187
8842468c	188	end:
d62a17ae	189	close(sock);
	190	XFREE(MTYPE_TMP, lifconf.lifc_buf);
	191	return ret;
8842468c	192	}
	193
	194	/* Get interface's index by ioctl. */
d62a17ae	195	static int if_get_index(struct interface *ifp)
8842468c	196	{
d62a17ae	197	int ret;
d62a17ae	198	struct lifreq lifreq;
8842468c	199
d62a17ae	200	lifreq_set_name(&lifreq, ifp->name);
8842468c	201
d62a17ae	202	if (ifp->flags & IFF_IPV4)
	203	ret = AF_IOCTL(AF_INET, SIOCGLIFINDEX, (caddr_t)&lifreq);
	204	else if (ifp->flags & IFF_IPV6)
	205	ret = AF_IOCTL(AF_INET6, SIOCGLIFINDEX, (caddr_t)&lifreq);
	206	else
	207	ret = -1;
8842468c	208
d62a17ae	209	if (ret < 0) {
450971aa	210	flog_err_sys(EC_LIB_SYSTEM_CALL, "SIOCGLIFINDEX(%s) failed",
9df414fe	211	ifp->name);
d62a17ae	212	return ret;
d62a17ae	213	}
8842468c	214
d62a17ae	215	/* OK we got interface index. */
8842468c	216	#ifdef ifr_ifindex
ff880b78	217	if_set_index(ifp, lifreq.lifr_ifindex);
8842468c	218	#else
ff880b78	219	if_set_index(ifp, lifreq.lifr_index);
8842468c	220	#endif
d62a17ae	221	return ifp->ifindex;
8842468c	222	}
	223
	224
	225	/* Interface address lookup by ioctl. This function only looks up
	226	IPv4 address. */
d62a17ae	227	#define ADDRLEN(sa) \
	228	(((sa)->sa_family == AF_INET ? sizeof(struct sockaddr_in) \
	229	: sizeof(struct sockaddr_in6)))
8842468c	230
	231	#define SIN(s) ((struct sockaddr_in *)(s))
	232	#define SIN6(s) ((struct sockaddr_in6 *)(s))
	233
0752ef0b	234	/* Retrieve address information for the given ifp */
d62a17ae	235	static int if_get_addr(struct interface ifp, struct sockaddr addr,
d62a17ae	236	const char *label)
8842468c	237	{
d62a17ae	238	int ret;
	239	struct lifreq lifreq;
	240	struct sockaddr_storage mask, dest;
	241	char *dest_pnt = NULL;
d7c0a89a	242	uint8_t prefixlen = 0;
d62a17ae	243	afi_t af;
	244	int flags = 0;
	245
	246	/* Interface's name and address family.
	247	* We need to use the logical interface name / label, if we've been
	248	* given one, in order to get the right address
	249	*/
138a4965 QY	250	strlcpy(lifreq.lifr_name, (label ? label : ifp->name),
138a4965 QY	251	sizeof(lifreq.lifr_name));
d62a17ae	252
	253	/* Interface's address. */
	254	memcpy(&lifreq.lifr_addr, addr, ADDRLEN(addr));
	255	af = addr->sa_family;
	256
	257	/* Point to point or broad cast address pointer init. */
	258	dest_pnt = NULL;
	259
	260	if (AF_IOCTL(af, SIOCGLIFDSTADDR, (caddr_t)&lifreq) >= 0) {
	261	memcpy(&dest, &lifreq.lifr_dstaddr, ADDRLEN(addr));
	262	if (af == AF_INET)
	263	dest_pnt = (char *)&(SIN(&dest)->sin_addr);
	264	else
	265	dest_pnt = (char *)&(SIN6(&dest)->sin6_addr);
	266	flags = ZEBRA_IFA_PEER;
fb6724a6	267	}
d62a17ae	268
	269	if (af == AF_INET) {
	270	ret = if_ioctl(SIOCGLIFNETMASK, (caddr_t)&lifreq);
	271
	272	if (ret < 0) {
	273	if (errno != EADDRNOTAVAIL) {
450971aa	274	flog_err_sys(EC_LIB_SYSTEM_CALL,
9df414fe QY	275	"SIOCGLIFNETMASK (%s) fail: %s",
9df414fe QY	276	ifp->name, safe_strerror(errno));
d62a17ae	277	return ret;
	278	}
	279	return 0;
	280	}
	281	memcpy(&mask, &lifreq.lifr_addr, ADDRLEN(addr));
	282
	283	prefixlen = ip_masklen(SIN(&mask)->sin_addr);
	284	if (!dest_pnt
	285	&& (if_ioctl(SIOCGLIFBRDADDR, (caddr_t)&lifreq) >= 0)) {
	286	memcpy(&dest, &lifreq.lifr_broadaddr,
	287	sizeof(struct sockaddr_in));
	288	dest_pnt = (char *)&SIN(&dest)->sin_addr;
	289	}
	290	} else if (af == AF_INET6) {
	291	if (if_ioctl_ipv6(SIOCGLIFSUBNET, (caddr_t)&lifreq) < 0) {
	292	if (ifp->flags & IFF_POINTOPOINT)
	293	prefixlen = IPV6_MAX_BITLEN;
	294	else
450971aa	295	flog_err_sys(EC_LIB_SYSTEM_CALL,
9df414fe QY	296	"SIOCGLIFSUBNET (%s) fail: %s",
9df414fe QY	297	ifp->name, safe_strerror(errno));
d62a17ae	298	} else {
	299	prefixlen = lifreq.lifr_addrlen;
	300	}
fb6724a6	301	}
8842468c	302
d62a17ae	303	/* Set address to the interface. */
	304	if (af == AF_INET)
	305	connected_add_ipv4(ifp, flags, &SIN(addr)->sin_addr, prefixlen,
cde1af84 AK	306	(struct in_addr *)dest_pnt, label,
cde1af84 AK	307	METRIC_MAX);
d62a17ae	308	else if (af == AF_INET6)
60c0687a	309	connected_add_ipv6(ifp, flags, &SIN6(addr)->sin6_addr, NULL,
cde1af84	310	prefixlen, label, METRIC_MAX);
8842468c	311
d62a17ae	312	return 0;
8842468c	313	}
	314
	315	/* Fetch interface information via ioctl(). */
d62a17ae	316	static void interface_info_ioctl(struct interface *ifp)
8842468c	317	{
d62a17ae	318	if_get_index(ifp);
	319	if_get_flags(ifp);
	320	if_get_mtu(ifp);
	321	if_get_metric(ifp);
8842468c	322	}
	323
	324	/* Lookup all interface information. */
d62a17ae	325	void interface_list(struct zebra_ns *zns)
8842468c	326	{
d62a17ae	327	if (zns->ns_id != NS_DEFAULT) {
9df414fe	328	zlog_debug("interface_list: ignore NS %u", zns->ns_id);
d62a17ae	329	return;
	330	}
	331	interface_list_ioctl(AF_INET);
	332	interface_list_ioctl(AF_INET6);
	333	interface_list_ioctl(AF_UNSPEC);
8842468c	334	}
8842468c	335
d62a17ae	336	struct connected if_lookup_linklocal(struct interface ifp)
8842468c	337	{
d62a17ae	338	struct listnode *node;
d62a17ae	339	struct connected *ifc;
8842468c	340
d62a17ae	341	if (ifp == NULL)
d62a17ae	342	return NULL;
8842468c	343
d62a17ae	344	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) {
	345	if ((ifc->address->family == AF_INET6)
	346	&& (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6)))
	347	return ifc;
	348	}
5b73a671	349
d62a17ae	350	return NULL;
8842468c	351	}
ddfeb486 DL	352
ddfeb486 DL	353	#endif /* SUNOS_5 */