xref: /freebsd/sys/net/rtsock.c (revision 0dcef81de9915e8ce1e3985204bebe7026d96b6f)
1c398230bSWarner Losh /*-
251369649SPedro F. Giffuni  * SPDX-License-Identifier: BSD-3-Clause
351369649SPedro F. Giffuni  *
4df8bae1dSRodney W. Grimes  * Copyright (c) 1988, 1991, 1993
5df8bae1dSRodney W. Grimes  *	The Regents of the University of California.  All rights reserved.
6df8bae1dSRodney W. Grimes  *
7df8bae1dSRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
8df8bae1dSRodney W. Grimes  * modification, are permitted provided that the following conditions
9df8bae1dSRodney W. Grimes  * are met:
10df8bae1dSRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
11df8bae1dSRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
12df8bae1dSRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
13df8bae1dSRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
14df8bae1dSRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
15fbbd9655SWarner Losh  * 3. Neither the name of the University nor the names of its contributors
16df8bae1dSRodney W. Grimes  *    may be used to endorse or promote products derived from this software
17df8bae1dSRodney W. Grimes  *    without specific prior written permission.
18df8bae1dSRodney W. Grimes  *
19df8bae1dSRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20df8bae1dSRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21df8bae1dSRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22df8bae1dSRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23df8bae1dSRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24df8bae1dSRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25df8bae1dSRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26df8bae1dSRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27df8bae1dSRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28df8bae1dSRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29df8bae1dSRodney W. Grimes  * SUCH DAMAGE.
30df8bae1dSRodney W. Grimes  *
3128070a0eSRuslan Ermilov  *	@(#)rtsock.c	8.7 (Berkeley) 10/12/95
32c3aac50fSPeter Wemm  * $FreeBSD$
33df8bae1dSRodney W. Grimes  */
348b6acd2bSConrad Meyer #include "opt_ddb.h"
35fedeb08bSAlexander V. Chernikov #include "opt_route.h"
36413628a7SBjoern A. Zeeb #include "opt_inet.h"
37413628a7SBjoern A. Zeeb #include "opt_inet6.h"
38e440aed9SQing Li 
39df8bae1dSRodney W. Grimes #include <sys/param.h>
40960ed29cSSeigo Tanimura #include <sys/jail.h>
41413628a7SBjoern A. Zeeb #include <sys/kernel.h>
42d0728d71SRobert Watson #include <sys/domain.h>
43609ff41fSWarner Losh #include <sys/lock.h>
444d1d4912SBruce Evans #include <sys/malloc.h>
45df8bae1dSRodney W. Grimes #include <sys/mbuf.h>
46acd3428bSRobert Watson #include <sys/priv.h>
47960ed29cSSeigo Tanimura #include <sys/proc.h>
48960ed29cSSeigo Tanimura #include <sys/protosw.h>
4920efcfc6SAndrey V. Elsukov #include <sys/rmlock.h>
503120b9d4SKip Macy #include <sys/rwlock.h>
51960ed29cSSeigo Tanimura #include <sys/signalvar.h>
52df8bae1dSRodney W. Grimes #include <sys/socket.h>
53df8bae1dSRodney W. Grimes #include <sys/socketvar.h>
54960ed29cSSeigo Tanimura #include <sys/sysctl.h>
55960ed29cSSeigo Tanimura #include <sys/systm.h>
56df8bae1dSRodney W. Grimes 
57df8bae1dSRodney W. Grimes #include <net/if.h>
5876039bc8SGleb Smirnoff #include <net/if_var.h>
598eca593cSQing Li #include <net/if_dl.h>
606e6b3f7cSQing Li #include <net/if_llatbl.h>
610ed6142bSQing Li #include <net/if_types.h>
62d989c7b3SRobert Watson #include <net/netisr.h>
63df8bae1dSRodney W. Grimes #include <net/raw_cb.h>
64960ed29cSSeigo Tanimura #include <net/route.h>
65a287a973SAlexander V. Chernikov #include <net/route/route_ctl.h>
66e7d8af4fSAlexander V. Chernikov #include <net/route/route_var.h>
674b79449eSBjoern A. Zeeb #include <net/vnet.h>
68df8bae1dSRodney W. Grimes 
695a59cefcSBosko Milekic #include <netinet/in.h>
70c7ab6602SQing Li #include <netinet/if_ether.h>
7108b68b0eSGleb Smirnoff #include <netinet/ip_carp.h>
72413628a7SBjoern A. Zeeb #ifdef INET6
732fe5a794SAlexander V. Chernikov #include <netinet6/in6_var.h>
740bebb544SHiroki Sato #include <netinet6/ip6_var.h>
75413628a7SBjoern A. Zeeb #include <netinet6/scope6_var.h>
76413628a7SBjoern A. Zeeb #endif
77a6663252SAlexander V. Chernikov #include <net/route/nhop.h>
785a59cefcSBosko Milekic 
79427a928aSKonstantin Belousov #ifdef COMPAT_FREEBSD32
80427a928aSKonstantin Belousov #include <sys/mount.h>
81427a928aSKonstantin Belousov #include <compat/freebsd32/freebsd32.h>
82427a928aSKonstantin Belousov 
83427a928aSKonstantin Belousov struct if_msghdr32 {
84427a928aSKonstantin Belousov 	uint16_t ifm_msglen;
85427a928aSKonstantin Belousov 	uint8_t	ifm_version;
86427a928aSKonstantin Belousov 	uint8_t	ifm_type;
87427a928aSKonstantin Belousov 	int32_t	ifm_addrs;
88427a928aSKonstantin Belousov 	int32_t	ifm_flags;
89427a928aSKonstantin Belousov 	uint16_t ifm_index;
90d25f8522SMark Johnston 	uint16_t _ifm_spare1;
91b245f96cSGleb Smirnoff 	struct	if_data ifm_data;
92427a928aSKonstantin Belousov };
936d076ae8SBjoern A. Zeeb 
946d076ae8SBjoern A. Zeeb struct if_msghdrl32 {
956d076ae8SBjoern A. Zeeb 	uint16_t ifm_msglen;
966d076ae8SBjoern A. Zeeb 	uint8_t	ifm_version;
976d076ae8SBjoern A. Zeeb 	uint8_t	ifm_type;
986d076ae8SBjoern A. Zeeb 	int32_t	ifm_addrs;
996d076ae8SBjoern A. Zeeb 	int32_t	ifm_flags;
1006d076ae8SBjoern A. Zeeb 	uint16_t ifm_index;
1016d076ae8SBjoern A. Zeeb 	uint16_t _ifm_spare1;
1026d076ae8SBjoern A. Zeeb 	uint16_t ifm_len;
1036d076ae8SBjoern A. Zeeb 	uint16_t ifm_data_off;
104d25f8522SMark Johnston 	uint32_t _ifm_spare2;
105b245f96cSGleb Smirnoff 	struct	if_data ifm_data;
1066d076ae8SBjoern A. Zeeb };
1076d076ae8SBjoern A. Zeeb 
1086d076ae8SBjoern A. Zeeb struct ifa_msghdrl32 {
1096d076ae8SBjoern A. Zeeb 	uint16_t ifam_msglen;
1106d076ae8SBjoern A. Zeeb 	uint8_t	ifam_version;
1116d076ae8SBjoern A. Zeeb 	uint8_t	ifam_type;
1126d076ae8SBjoern A. Zeeb 	int32_t	ifam_addrs;
1136d076ae8SBjoern A. Zeeb 	int32_t	ifam_flags;
1146d076ae8SBjoern A. Zeeb 	uint16_t ifam_index;
1156d076ae8SBjoern A. Zeeb 	uint16_t _ifam_spare1;
1166d076ae8SBjoern A. Zeeb 	uint16_t ifam_len;
1176d076ae8SBjoern A. Zeeb 	uint16_t ifam_data_off;
1186d076ae8SBjoern A. Zeeb 	int32_t	ifam_metric;
119b245f96cSGleb Smirnoff 	struct	if_data ifam_data;
1206d076ae8SBjoern A. Zeeb };
121279e33d4SKonstantin Belousov 
122279e33d4SKonstantin Belousov #define SA_SIZE32(sa)						\
123279e33d4SKonstantin Belousov     (  (((struct sockaddr *)(sa))->sa_len == 0) ?		\
124279e33d4SKonstantin Belousov 	sizeof(int)		:				\
125279e33d4SKonstantin Belousov 	1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(int) - 1) ) )
126279e33d4SKonstantin Belousov 
1276d076ae8SBjoern A. Zeeb #endif /* COMPAT_FREEBSD32 */
128427a928aSKonstantin Belousov 
129b31fbebeSAlexander V. Chernikov struct linear_buffer {
130b31fbebeSAlexander V. Chernikov 	char		*base;	/* Base allocated memory pointer */
131b31fbebeSAlexander V. Chernikov 	uint32_t	offset;	/* Currently used offset */
132b31fbebeSAlexander V. Chernikov 	uint32_t	size;	/* Total buffer size */
133b31fbebeSAlexander V. Chernikov };
134b31fbebeSAlexander V. Chernikov #define	SCRATCH_BUFFER_SIZE	1024
135b31fbebeSAlexander V. Chernikov 
136758c9d54SAlexander V. Chernikov #define	RTS_PID_PRINTF(_fmt, ...) \
137758c9d54SAlexander V. Chernikov     printf("rtsock:%s(): PID %d: " _fmt "\n", __func__, curproc->p_pid, ## __VA_ARGS__)
138758c9d54SAlexander V. Chernikov 
139a1c995b6SPoul-Henning Kamp MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
140a1c995b6SPoul-Henning Kamp 
141becc44d7SSam Leffler /* NB: these are not modified */
14252041295SPoul-Henning Kamp static struct	sockaddr route_src = { 2, PF_ROUTE, };
143076d0761SJulian Elischer static struct	sockaddr sa_zero   = { sizeof(sa_zero), AF_INET, };
144becc44d7SSam Leffler 
14508b68b0eSGleb Smirnoff /* These are external hooks for CARP. */
14608b68b0eSGleb Smirnoff int	(*carp_get_vhid_p)(struct ifaddr *);
14708b68b0eSGleb Smirnoff 
148528737fdSBjoern A. Zeeb /*
149528737fdSBjoern A. Zeeb  * Used by rtsock/raw_input callback code to decide whether to filter the update
150528737fdSBjoern A. Zeeb  * notification to a socket bound to a particular FIB.
151528737fdSBjoern A. Zeeb  */
152528737fdSBjoern A. Zeeb #define	RTS_FILTER_FIB	M_PROTO8
153528737fdSBjoern A. Zeeb 
154c5d4eab6SMarko Zec typedef struct {
15518aee723SPeter Pentchev 	int	ip_count;	/* attached w/ AF_INET */
156becc44d7SSam Leffler 	int	ip6_count;	/* attached w/ AF_INET6 */
157becc44d7SSam Leffler 	int	any_count;	/* total attached */
158c5d4eab6SMarko Zec } route_cb_t;
1595f901c92SAndrew Turner VNET_DEFINE_STATIC(route_cb_t, route_cb);
160c5d4eab6SMarko Zec #define	V_route_cb VNET(route_cb)
161df8bae1dSRodney W. Grimes 
162aea8b30fSSam Leffler struct mtx rtsock_mtx;
163aea8b30fSSam Leffler MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF);
164aea8b30fSSam Leffler 
165aea8b30fSSam Leffler #define	RTSOCK_LOCK()	mtx_lock(&rtsock_mtx)
166aea8b30fSSam Leffler #define	RTSOCK_UNLOCK()	mtx_unlock(&rtsock_mtx)
167aea8b30fSSam Leffler #define	RTSOCK_LOCK_ASSERT()	mtx_assert(&rtsock_mtx, MA_OWNED)
168aea8b30fSSam Leffler 
169fedeb08bSAlexander V. Chernikov SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
170190a4c94SRobert Watson 
171df8bae1dSRodney W. Grimes struct walkarg {
172d68fb8d9SAlexander V. Chernikov 	int	family;
17352041295SPoul-Henning Kamp 	int	w_tmemsize;
17452041295SPoul-Henning Kamp 	int	w_op, w_arg;
17552041295SPoul-Henning Kamp 	caddr_t	w_tmem;
17652041295SPoul-Henning Kamp 	struct sysctl_req *w_req;
177d68fb8d9SAlexander V. Chernikov 	struct sockaddr *dst;
178d68fb8d9SAlexander V. Chernikov 	struct sockaddr *mask;
179df8bae1dSRodney W. Grimes };
180df8bae1dSRodney W. Grimes 
181d989c7b3SRobert Watson static void	rts_input(struct mbuf *m);
1826db47af4SAlexander V. Chernikov static struct mbuf *rtsock_msg_mbuf(int type, struct rt_addrinfo *rtinfo);
183f2e5eb36SAlexander V. Chernikov static int	rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo,
184f2e5eb36SAlexander V. Chernikov 			struct walkarg *w, int *plen);
1855dfc91d7SLuigi Rizzo static int	rt_xaddrs(caddr_t cp, caddr_t cplim,
1865dfc91d7SLuigi Rizzo 			struct rt_addrinfo *rtinfo);
187b31fbebeSAlexander V. Chernikov static int	cleanup_xaddrs(struct rt_addrinfo *info, struct linear_buffer *lb);
188d68fb8d9SAlexander V. Chernikov static int	sysctl_dumpentry(struct rtentry *rt, void *vw);
1892259a030SAlexander V. Chernikov static int	sysctl_dumpnhop(struct rtentry *rt, struct nhop_object *nh,
1902259a030SAlexander V. Chernikov 			uint32_t weight, struct walkarg *w);
191929ddbbbSAlfred Perlstein static int	sysctl_iflist(int af, struct walkarg *w);
19205b2efe0SBruce M Simpson static int	sysctl_ifmalist(int af, struct walkarg *w);
19373d76e77SKevin Lo static int	route_output(struct mbuf *m, struct socket *so, ...);
19493bfd365SAlexander V. Chernikov static void	rt_getmetrics(const struct rtentry *rt,
19593bfd365SAlexander V. Chernikov 			const struct nhop_object *nh, struct rt_metrics *out);
1963ca1a2d6SMax Laier static void	rt_dispatch(struct mbuf *, sa_family_t);
197c83dda36SAlexander V. Chernikov static int	handle_rtm_get(struct rt_addrinfo *info, u_int fibnum,
198a287a973SAlexander V. Chernikov 			struct rt_msghdr *rtm, struct rib_cmd_info *rc);
199592d300eSAlexander V. Chernikov static int	update_rtm_from_rc(struct rt_addrinfo *info,
200c83dda36SAlexander V. Chernikov 			struct rt_msghdr **prtm, int alloc_len,
201592d300eSAlexander V. Chernikov 			struct rib_cmd_info *rc, struct nhop_object *nh);
202c83dda36SAlexander V. Chernikov static void	send_rtm_reply(struct socket *so, struct rt_msghdr *rtm,
203c83dda36SAlexander V. Chernikov 			struct mbuf *m, sa_family_t saf, u_int fibnum,
204c83dda36SAlexander V. Chernikov 			int rtm_errno);
205d68fb8d9SAlexander V. Chernikov static bool	can_export_rte(struct ucred *td_ucred, bool rt_is_host,
206d68fb8d9SAlexander V. Chernikov 			const struct sockaddr *rt_dst);
207df8bae1dSRodney W. Grimes 
208d4b5cae4SRobert Watson static struct netisr_handler rtsock_nh = {
209d4b5cae4SRobert Watson 	.nh_name = "rtsock",
210d4b5cae4SRobert Watson 	.nh_handler = rts_input,
211d4b5cae4SRobert Watson 	.nh_proto = NETISR_ROUTE,
212d4b5cae4SRobert Watson 	.nh_policy = NETISR_POLICY_SOURCE,
213d4b5cae4SRobert Watson };
214d4b5cae4SRobert Watson 
215d4b5cae4SRobert Watson static int
216d4b5cae4SRobert Watson sysctl_route_netisr_maxqlen(SYSCTL_HANDLER_ARGS)
217d4b5cae4SRobert Watson {
218d4b5cae4SRobert Watson 	int error, qlimit;
219d4b5cae4SRobert Watson 
220d4b5cae4SRobert Watson 	netisr_getqlimit(&rtsock_nh, &qlimit);
221d4b5cae4SRobert Watson 	error = sysctl_handle_int(oidp, &qlimit, 0, req);
222d4b5cae4SRobert Watson         if (error || !req->newptr)
223d4b5cae4SRobert Watson                 return (error);
224d4b5cae4SRobert Watson 	if (qlimit < 1)
225d4b5cae4SRobert Watson 		return (EINVAL);
226d4b5cae4SRobert Watson 	return (netisr_setqlimit(&rtsock_nh, qlimit));
227d4b5cae4SRobert Watson }
2287029da5cSPawel Biernacki SYSCTL_PROC(_net_route, OID_AUTO, netisr_maxqlen,
2297029da5cSPawel Biernacki     CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
230d4b5cae4SRobert Watson     0, 0, sysctl_route_netisr_maxqlen, "I",
231d4b5cae4SRobert Watson     "maximum routing socket dispatch queue length");
232d4b5cae4SRobert Watson 
233d989c7b3SRobert Watson static void
234484149deSBjoern A. Zeeb vnet_rts_init(void)
235d989c7b3SRobert Watson {
236b062951aSRobert Watson 	int tmp;
237d989c7b3SRobert Watson 
238484149deSBjoern A. Zeeb 	if (IS_DEFAULT_VNET(curvnet)) {
239b062951aSRobert Watson 		if (TUNABLE_INT_FETCH("net.route.netisr_maxqlen", &tmp))
240d4b5cae4SRobert Watson 			rtsock_nh.nh_qlimit = tmp;
241d4b5cae4SRobert Watson 		netisr_register(&rtsock_nh);
242d989c7b3SRobert Watson 	}
243484149deSBjoern A. Zeeb #ifdef VIMAGE
244484149deSBjoern A. Zeeb 	 else
245484149deSBjoern A. Zeeb 		netisr_register_vnet(&rtsock_nh);
246484149deSBjoern A. Zeeb #endif
247484149deSBjoern A. Zeeb }
248484149deSBjoern A. Zeeb VNET_SYSINIT(vnet_rtsock, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD,
249484149deSBjoern A. Zeeb     vnet_rts_init, 0);
250484149deSBjoern A. Zeeb 
251484149deSBjoern A. Zeeb #ifdef VIMAGE
252484149deSBjoern A. Zeeb static void
253484149deSBjoern A. Zeeb vnet_rts_uninit(void)
254484149deSBjoern A. Zeeb {
255484149deSBjoern A. Zeeb 
256484149deSBjoern A. Zeeb 	netisr_unregister_vnet(&rtsock_nh);
257484149deSBjoern A. Zeeb }
258484149deSBjoern A. Zeeb VNET_SYSUNINIT(vnet_rts_uninit, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD,
259484149deSBjoern A. Zeeb     vnet_rts_uninit, 0);
260484149deSBjoern A. Zeeb #endif
261d989c7b3SRobert Watson 
262528737fdSBjoern A. Zeeb static int
263528737fdSBjoern A. Zeeb raw_input_rts_cb(struct mbuf *m, struct sockproto *proto, struct sockaddr *src,
264528737fdSBjoern A. Zeeb     struct rawcb *rp)
265528737fdSBjoern A. Zeeb {
266528737fdSBjoern A. Zeeb 	int fibnum;
267528737fdSBjoern A. Zeeb 
268528737fdSBjoern A. Zeeb 	KASSERT(m != NULL, ("%s: m is NULL", __func__));
269528737fdSBjoern A. Zeeb 	KASSERT(proto != NULL, ("%s: proto is NULL", __func__));
270528737fdSBjoern A. Zeeb 	KASSERT(rp != NULL, ("%s: rp is NULL", __func__));
271528737fdSBjoern A. Zeeb 
272528737fdSBjoern A. Zeeb 	/* No filtering requested. */
273528737fdSBjoern A. Zeeb 	if ((m->m_flags & RTS_FILTER_FIB) == 0)
274528737fdSBjoern A. Zeeb 		return (0);
275528737fdSBjoern A. Zeeb 
276528737fdSBjoern A. Zeeb 	/* Check if it is a rts and the fib matches the one of the socket. */
277528737fdSBjoern A. Zeeb 	fibnum = M_GETFIB(m);
278528737fdSBjoern A. Zeeb 	if (proto->sp_family != PF_ROUTE ||
279528737fdSBjoern A. Zeeb 	    rp->rcb_socket == NULL ||
280528737fdSBjoern A. Zeeb 	    rp->rcb_socket->so_fibnum == fibnum)
281528737fdSBjoern A. Zeeb 		return (0);
282528737fdSBjoern A. Zeeb 
283528737fdSBjoern A. Zeeb 	/* Filtering requested and no match, the socket shall be skipped. */
284528737fdSBjoern A. Zeeb 	return (1);
285528737fdSBjoern A. Zeeb }
286528737fdSBjoern A. Zeeb 
287d989c7b3SRobert Watson static void
288d989c7b3SRobert Watson rts_input(struct mbuf *m)
289d989c7b3SRobert Watson {
290d989c7b3SRobert Watson 	struct sockproto route_proto;
291d989c7b3SRobert Watson 	unsigned short *family;
292d989c7b3SRobert Watson 	struct m_tag *tag;
293d989c7b3SRobert Watson 
294d989c7b3SRobert Watson 	route_proto.sp_family = PF_ROUTE;
295d989c7b3SRobert Watson 	tag = m_tag_find(m, PACKET_TAG_RTSOCKFAM, NULL);
296d989c7b3SRobert Watson 	if (tag != NULL) {
297d989c7b3SRobert Watson 		family = (unsigned short *)(tag + 1);
298d989c7b3SRobert Watson 		route_proto.sp_protocol = *family;
299d989c7b3SRobert Watson 		m_tag_delete(m, tag);
300d989c7b3SRobert Watson 	} else
301d989c7b3SRobert Watson 		route_proto.sp_protocol = 0;
302d989c7b3SRobert Watson 
303528737fdSBjoern A. Zeeb 	raw_input_ext(m, &route_proto, &route_src, raw_input_rts_cb);
304d989c7b3SRobert Watson }
305d989c7b3SRobert Watson 
306a29f300eSGarrett Wollman /*
307a29f300eSGarrett Wollman  * It really doesn't make any sense at all for this code to share much
308a29f300eSGarrett Wollman  * with raw_usrreq.c, since its functionality is so restricted.  XXX
309a29f300eSGarrett Wollman  */
310ac45e92fSRobert Watson static void
311a29f300eSGarrett Wollman rts_abort(struct socket *so)
312df8bae1dSRodney W. Grimes {
3137e994955SRobert Watson 
314ac45e92fSRobert Watson 	raw_usrreqs.pru_abort(so);
315df8bae1dSRodney W. Grimes }
316a29f300eSGarrett Wollman 
317a152f8a3SRobert Watson static void
318a152f8a3SRobert Watson rts_close(struct socket *so)
319a152f8a3SRobert Watson {
320a152f8a3SRobert Watson 
321a152f8a3SRobert Watson 	raw_usrreqs.pru_close(so);
322a152f8a3SRobert Watson }
323a152f8a3SRobert Watson 
324a29f300eSGarrett Wollman /* pru_accept is EOPNOTSUPP */
325a29f300eSGarrett Wollman 
326a29f300eSGarrett Wollman static int
327b40ce416SJulian Elischer rts_attach(struct socket *so, int proto, struct thread *td)
328a29f300eSGarrett Wollman {
329a29f300eSGarrett Wollman 	struct rawcb *rp;
330c9b652e3SAndre Oppermann 	int error;
331a29f300eSGarrett Wollman 
332bc725eafSRobert Watson 	KASSERT(so->so_pcb == NULL, ("rts_attach: so_pcb != NULL"));
333bc725eafSRobert Watson 
3347cc0979fSDavid Malone 	/* XXX */
3351ede983cSDag-Erling Smørgrav 	rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO);
336a29f300eSGarrett Wollman 
337a29f300eSGarrett Wollman 	so->so_pcb = (caddr_t)rp;
3388b07e49aSJulian Elischer 	so->so_fibnum = td->td_proc->p_fibnum;
339162c0b2eSRuslan Ermilov 	error = raw_attach(so, proto);
340a29f300eSGarrett Wollman 	rp = sotorawcb(so);
341a29f300eSGarrett Wollman 	if (error) {
3427ba271aeSJonathan Chen 		so->so_pcb = NULL;
343a29f300eSGarrett Wollman 		free(rp, M_PCB);
344a29f300eSGarrett Wollman 		return error;
345a29f300eSGarrett Wollman 	}
346aea8b30fSSam Leffler 	RTSOCK_LOCK();
347a29f300eSGarrett Wollman 	switch(rp->rcb_proto.sp_protocol) {
348a29f300eSGarrett Wollman 	case AF_INET:
349c5d4eab6SMarko Zec 		V_route_cb.ip_count++;
350a29f300eSGarrett Wollman 		break;
351899ce4f4SYoshinobu Inoue 	case AF_INET6:
352c5d4eab6SMarko Zec 		V_route_cb.ip6_count++;
353899ce4f4SYoshinobu Inoue 		break;
354a29f300eSGarrett Wollman 	}
355c5d4eab6SMarko Zec 	V_route_cb.any_count++;
356aea8b30fSSam Leffler 	RTSOCK_UNLOCK();
35703e49181SSeigo Tanimura 	soisconnected(so);
358df8bae1dSRodney W. Grimes 	so->so_options |= SO_USELOOPBACK;
359a29f300eSGarrett Wollman 	return 0;
360df8bae1dSRodney W. Grimes }
361df8bae1dSRodney W. Grimes 
362a29f300eSGarrett Wollman static int
363b40ce416SJulian Elischer rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
364a29f300eSGarrett Wollman {
3657e994955SRobert Watson 
3667e994955SRobert Watson 	return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */
367a29f300eSGarrett Wollman }
368a29f300eSGarrett Wollman 
369a29f300eSGarrett Wollman static int
370b40ce416SJulian Elischer rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
371a29f300eSGarrett Wollman {
3727e994955SRobert Watson 
3737e994955SRobert Watson 	return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */
374a29f300eSGarrett Wollman }
375a29f300eSGarrett Wollman 
376a29f300eSGarrett Wollman /* pru_connect2 is EOPNOTSUPP */
377a29f300eSGarrett Wollman /* pru_control is EOPNOTSUPP */
378a29f300eSGarrett Wollman 
379bc725eafSRobert Watson static void
380a29f300eSGarrett Wollman rts_detach(struct socket *so)
381a29f300eSGarrett Wollman {
382a29f300eSGarrett Wollman 	struct rawcb *rp = sotorawcb(so);
383a29f300eSGarrett Wollman 
384bc725eafSRobert Watson 	KASSERT(rp != NULL, ("rts_detach: rp == NULL"));
385bc725eafSRobert Watson 
386aea8b30fSSam Leffler 	RTSOCK_LOCK();
387a29f300eSGarrett Wollman 	switch(rp->rcb_proto.sp_protocol) {
388a29f300eSGarrett Wollman 	case AF_INET:
389c5d4eab6SMarko Zec 		V_route_cb.ip_count--;
390a29f300eSGarrett Wollman 		break;
391899ce4f4SYoshinobu Inoue 	case AF_INET6:
392c5d4eab6SMarko Zec 		V_route_cb.ip6_count--;
393899ce4f4SYoshinobu Inoue 		break;
394a29f300eSGarrett Wollman 	}
395c5d4eab6SMarko Zec 	V_route_cb.any_count--;
396aea8b30fSSam Leffler 	RTSOCK_UNLOCK();
397bc725eafSRobert Watson 	raw_usrreqs.pru_detach(so);
398a29f300eSGarrett Wollman }
399a29f300eSGarrett Wollman 
400a29f300eSGarrett Wollman static int
401a29f300eSGarrett Wollman rts_disconnect(struct socket *so)
402a29f300eSGarrett Wollman {
4037e994955SRobert Watson 
4047e994955SRobert Watson 	return (raw_usrreqs.pru_disconnect(so));
405a29f300eSGarrett Wollman }
406a29f300eSGarrett Wollman 
407a29f300eSGarrett Wollman /* pru_listen is EOPNOTSUPP */
408a29f300eSGarrett Wollman 
409a29f300eSGarrett Wollman static int
41057bf258eSGarrett Wollman rts_peeraddr(struct socket *so, struct sockaddr **nam)
411a29f300eSGarrett Wollman {
4127e994955SRobert Watson 
4137e994955SRobert Watson 	return (raw_usrreqs.pru_peeraddr(so, nam));
414a29f300eSGarrett Wollman }
415a29f300eSGarrett Wollman 
416a29f300eSGarrett Wollman /* pru_rcvd is EOPNOTSUPP */
417a29f300eSGarrett Wollman /* pru_rcvoob is EOPNOTSUPP */
418a29f300eSGarrett Wollman 
419a29f300eSGarrett Wollman static int
42057bf258eSGarrett Wollman rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
421b40ce416SJulian Elischer 	 struct mbuf *control, struct thread *td)
422a29f300eSGarrett Wollman {
4237e994955SRobert Watson 
4247e994955SRobert Watson 	return (raw_usrreqs.pru_send(so, flags, m, nam, control, td));
425a29f300eSGarrett Wollman }
426a29f300eSGarrett Wollman 
427a29f300eSGarrett Wollman /* pru_sense is null */
428a29f300eSGarrett Wollman 
429a29f300eSGarrett Wollman static int
430a29f300eSGarrett Wollman rts_shutdown(struct socket *so)
431a29f300eSGarrett Wollman {
4327e994955SRobert Watson 
4337e994955SRobert Watson 	return (raw_usrreqs.pru_shutdown(so));
434a29f300eSGarrett Wollman }
435a29f300eSGarrett Wollman 
436a29f300eSGarrett Wollman static int
43757bf258eSGarrett Wollman rts_sockaddr(struct socket *so, struct sockaddr **nam)
438a29f300eSGarrett Wollman {
4397e994955SRobert Watson 
4407e994955SRobert Watson 	return (raw_usrreqs.pru_sockaddr(so, nam));
441a29f300eSGarrett Wollman }
442a29f300eSGarrett Wollman 
443a29f300eSGarrett Wollman static struct pr_usrreqs route_usrreqs = {
444756d52a1SPoul-Henning Kamp 	.pru_abort =		rts_abort,
445756d52a1SPoul-Henning Kamp 	.pru_attach =		rts_attach,
446756d52a1SPoul-Henning Kamp 	.pru_bind =		rts_bind,
447756d52a1SPoul-Henning Kamp 	.pru_connect =		rts_connect,
448756d52a1SPoul-Henning Kamp 	.pru_detach =		rts_detach,
449756d52a1SPoul-Henning Kamp 	.pru_disconnect =	rts_disconnect,
450756d52a1SPoul-Henning Kamp 	.pru_peeraddr =		rts_peeraddr,
451756d52a1SPoul-Henning Kamp 	.pru_send =		rts_send,
452756d52a1SPoul-Henning Kamp 	.pru_shutdown =		rts_shutdown,
453756d52a1SPoul-Henning Kamp 	.pru_sockaddr =		rts_sockaddr,
454a152f8a3SRobert Watson 	.pru_close =		rts_close,
455a29f300eSGarrett Wollman };
456a29f300eSGarrett Wollman 
457413628a7SBjoern A. Zeeb #ifndef _SOCKADDR_UNION_DEFINED
458413628a7SBjoern A. Zeeb #define	_SOCKADDR_UNION_DEFINED
459413628a7SBjoern A. Zeeb /*
460413628a7SBjoern A. Zeeb  * The union of all possible address formats we handle.
461413628a7SBjoern A. Zeeb  */
462413628a7SBjoern A. Zeeb union sockaddr_union {
463413628a7SBjoern A. Zeeb 	struct sockaddr		sa;
464413628a7SBjoern A. Zeeb 	struct sockaddr_in	sin;
465413628a7SBjoern A. Zeeb 	struct sockaddr_in6	sin6;
466413628a7SBjoern A. Zeeb };
467413628a7SBjoern A. Zeeb #endif /* _SOCKADDR_UNION_DEFINED */
468413628a7SBjoern A. Zeeb 
469413628a7SBjoern A. Zeeb static int
470413628a7SBjoern A. Zeeb rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp,
471aaad3c4fSAlexander V. Chernikov     struct nhop_object *nh, union sockaddr_union *saun, struct ucred *cred)
472413628a7SBjoern A. Zeeb {
473a68cc388SGleb Smirnoff #if defined(INET) || defined(INET6)
474a68cc388SGleb Smirnoff 	struct epoch_tracker et;
475a68cc388SGleb Smirnoff #endif
476413628a7SBjoern A. Zeeb 
4779c79d243SJamie Gritton 	/* First, see if the returned address is part of the jail. */
478aaad3c4fSAlexander V. Chernikov 	if (prison_if(cred, nh->nh_ifa->ifa_addr) == 0) {
479aaad3c4fSAlexander V. Chernikov 		info->rti_info[RTAX_IFA] = nh->nh_ifa->ifa_addr;
4809c79d243SJamie Gritton 		return (0);
4819c79d243SJamie Gritton 	}
4829c79d243SJamie Gritton 
483413628a7SBjoern A. Zeeb 	switch (info->rti_info[RTAX_DST]->sa_family) {
484413628a7SBjoern A. Zeeb #ifdef INET
485413628a7SBjoern A. Zeeb 	case AF_INET:
486413628a7SBjoern A. Zeeb 	{
487413628a7SBjoern A. Zeeb 		struct in_addr ia;
488413628a7SBjoern A. Zeeb 		struct ifaddr *ifa;
489413628a7SBjoern A. Zeeb 		int found;
490413628a7SBjoern A. Zeeb 
491413628a7SBjoern A. Zeeb 		found = 0;
492413628a7SBjoern A. Zeeb 		/*
4939c79d243SJamie Gritton 		 * Try to find an address on the given outgoing interface
4949c79d243SJamie Gritton 		 * that belongs to the jail.
495413628a7SBjoern A. Zeeb 		 */
496a68cc388SGleb Smirnoff 		NET_EPOCH_ENTER(et);
497d7c5a620SMatt Macy 		CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
498413628a7SBjoern A. Zeeb 			struct sockaddr *sa;
499413628a7SBjoern A. Zeeb 			sa = ifa->ifa_addr;
500413628a7SBjoern A. Zeeb 			if (sa->sa_family != AF_INET)
501413628a7SBjoern A. Zeeb 				continue;
502413628a7SBjoern A. Zeeb 			ia = ((struct sockaddr_in *)sa)->sin_addr;
503b89e82ddSJamie Gritton 			if (prison_check_ip4(cred, &ia) == 0) {
504413628a7SBjoern A. Zeeb 				found = 1;
505413628a7SBjoern A. Zeeb 				break;
506413628a7SBjoern A. Zeeb 			}
507413628a7SBjoern A. Zeeb 		}
508a68cc388SGleb Smirnoff 		NET_EPOCH_EXIT(et);
509413628a7SBjoern A. Zeeb 		if (!found) {
510413628a7SBjoern A. Zeeb 			/*
5119c79d243SJamie Gritton 			 * As a last resort return the 'default' jail address.
512413628a7SBjoern A. Zeeb 			 */
513aaad3c4fSAlexander V. Chernikov 			ia = ((struct sockaddr_in *)nh->nh_ifa->ifa_addr)->
5140304c731SJamie Gritton 			    sin_addr;
5151cecba0fSBjoern A. Zeeb 			if (prison_get_ip4(cred, &ia) != 0)
516413628a7SBjoern A. Zeeb 				return (ESRCH);
517413628a7SBjoern A. Zeeb 		}
518413628a7SBjoern A. Zeeb 		bzero(&saun->sin, sizeof(struct sockaddr_in));
519413628a7SBjoern A. Zeeb 		saun->sin.sin_len = sizeof(struct sockaddr_in);
520413628a7SBjoern A. Zeeb 		saun->sin.sin_family = AF_INET;
521413628a7SBjoern A. Zeeb 		saun->sin.sin_addr.s_addr = ia.s_addr;
5229c79d243SJamie Gritton 		info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin;
523413628a7SBjoern A. Zeeb 		break;
524413628a7SBjoern A. Zeeb 	}
525413628a7SBjoern A. Zeeb #endif
526413628a7SBjoern A. Zeeb #ifdef INET6
527413628a7SBjoern A. Zeeb 	case AF_INET6:
528413628a7SBjoern A. Zeeb 	{
529413628a7SBjoern A. Zeeb 		struct in6_addr ia6;
530413628a7SBjoern A. Zeeb 		struct ifaddr *ifa;
531413628a7SBjoern A. Zeeb 		int found;
532413628a7SBjoern A. Zeeb 
533413628a7SBjoern A. Zeeb 		found = 0;
534413628a7SBjoern A. Zeeb 		/*
5359c79d243SJamie Gritton 		 * Try to find an address on the given outgoing interface
5369c79d243SJamie Gritton 		 * that belongs to the jail.
537413628a7SBjoern A. Zeeb 		 */
538a68cc388SGleb Smirnoff 		NET_EPOCH_ENTER(et);
539d7c5a620SMatt Macy 		CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
540413628a7SBjoern A. Zeeb 			struct sockaddr *sa;
541413628a7SBjoern A. Zeeb 			sa = ifa->ifa_addr;
542413628a7SBjoern A. Zeeb 			if (sa->sa_family != AF_INET6)
543413628a7SBjoern A. Zeeb 				continue;
544413628a7SBjoern A. Zeeb 			bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr,
545413628a7SBjoern A. Zeeb 			    &ia6, sizeof(struct in6_addr));
546b89e82ddSJamie Gritton 			if (prison_check_ip6(cred, &ia6) == 0) {
547413628a7SBjoern A. Zeeb 				found = 1;
548413628a7SBjoern A. Zeeb 				break;
549413628a7SBjoern A. Zeeb 			}
550413628a7SBjoern A. Zeeb 		}
551a68cc388SGleb Smirnoff 		NET_EPOCH_EXIT(et);
552413628a7SBjoern A. Zeeb 		if (!found) {
553413628a7SBjoern A. Zeeb 			/*
5549c79d243SJamie Gritton 			 * As a last resort return the 'default' jail address.
555413628a7SBjoern A. Zeeb 			 */
556aaad3c4fSAlexander V. Chernikov 			ia6 = ((struct sockaddr_in6 *)nh->nh_ifa->ifa_addr)->
5570304c731SJamie Gritton 			    sin6_addr;
5581cecba0fSBjoern A. Zeeb 			if (prison_get_ip6(cred, &ia6) != 0)
559413628a7SBjoern A. Zeeb 				return (ESRCH);
560413628a7SBjoern A. Zeeb 		}
561413628a7SBjoern A. Zeeb 		bzero(&saun->sin6, sizeof(struct sockaddr_in6));
562413628a7SBjoern A. Zeeb 		saun->sin6.sin6_len = sizeof(struct sockaddr_in6);
563413628a7SBjoern A. Zeeb 		saun->sin6.sin6_family = AF_INET6;
5649c79d243SJamie Gritton 		bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr));
565413628a7SBjoern A. Zeeb 		if (sa6_recoverscope(&saun->sin6) != 0)
566413628a7SBjoern A. Zeeb 			return (ESRCH);
5679c79d243SJamie Gritton 		info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6;
568413628a7SBjoern A. Zeeb 		break;
569413628a7SBjoern A. Zeeb 	}
570413628a7SBjoern A. Zeeb #endif
571413628a7SBjoern A. Zeeb 	default:
572413628a7SBjoern A. Zeeb 		return (ESRCH);
573413628a7SBjoern A. Zeeb 	}
574413628a7SBjoern A. Zeeb 	return (0);
575413628a7SBjoern A. Zeeb }
576413628a7SBjoern A. Zeeb 
577145bf6c0SAlexander V. Chernikov static int
578145bf6c0SAlexander V. Chernikov fill_blackholeinfo(struct rt_addrinfo *info, union sockaddr_union *saun)
579145bf6c0SAlexander V. Chernikov {
580145bf6c0SAlexander V. Chernikov 	struct ifaddr *ifa;
581145bf6c0SAlexander V. Chernikov 	sa_family_t saf;
582145bf6c0SAlexander V. Chernikov 
583145bf6c0SAlexander V. Chernikov 	if (V_loif == NULL) {
584758c9d54SAlexander V. Chernikov 		RTS_PID_PRINTF("Unable to add blackhole/reject nhop without loopback");
585145bf6c0SAlexander V. Chernikov 		return (ENOTSUP);
586145bf6c0SAlexander V. Chernikov 	}
587145bf6c0SAlexander V. Chernikov 	info->rti_ifp = V_loif;
588145bf6c0SAlexander V. Chernikov 
589145bf6c0SAlexander V. Chernikov 	saf = info->rti_info[RTAX_DST]->sa_family;
590145bf6c0SAlexander V. Chernikov 
591145bf6c0SAlexander V. Chernikov 	CK_STAILQ_FOREACH(ifa, &info->rti_ifp->if_addrhead, ifa_link) {
592145bf6c0SAlexander V. Chernikov 		if (ifa->ifa_addr->sa_family == saf) {
593145bf6c0SAlexander V. Chernikov 			info->rti_ifa = ifa;
594145bf6c0SAlexander V. Chernikov 			break;
595145bf6c0SAlexander V. Chernikov 		}
596145bf6c0SAlexander V. Chernikov 	}
597145bf6c0SAlexander V. Chernikov 	if (info->rti_ifa == NULL)
598145bf6c0SAlexander V. Chernikov 		return (ENOTSUP);
599145bf6c0SAlexander V. Chernikov 
600145bf6c0SAlexander V. Chernikov 	bzero(saun, sizeof(union sockaddr_union));
601145bf6c0SAlexander V. Chernikov 	switch (saf) {
6028ca99aecSAlexander V. Chernikov #ifdef INET
603145bf6c0SAlexander V. Chernikov 	case AF_INET:
604145bf6c0SAlexander V. Chernikov 		saun->sin.sin_family = AF_INET;
605145bf6c0SAlexander V. Chernikov 		saun->sin.sin_len = sizeof(struct sockaddr_in);
606145bf6c0SAlexander V. Chernikov 		saun->sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
607145bf6c0SAlexander V. Chernikov 		break;
6088ca99aecSAlexander V. Chernikov #endif
6098ca99aecSAlexander V. Chernikov #ifdef INET6
610145bf6c0SAlexander V. Chernikov 	case AF_INET6:
611145bf6c0SAlexander V. Chernikov 		saun->sin6.sin6_family = AF_INET6;
612145bf6c0SAlexander V. Chernikov 		saun->sin6.sin6_len = sizeof(struct sockaddr_in6);
613145bf6c0SAlexander V. Chernikov 		saun->sin6.sin6_addr = in6addr_loopback;
614145bf6c0SAlexander V. Chernikov 		break;
6158ca99aecSAlexander V. Chernikov #endif
616145bf6c0SAlexander V. Chernikov 	default:
617145bf6c0SAlexander V. Chernikov 		return (ENOTSUP);
618145bf6c0SAlexander V. Chernikov 	}
619145bf6c0SAlexander V. Chernikov 	info->rti_info[RTAX_GATEWAY] = &saun->sa;
620145bf6c0SAlexander V. Chernikov 	info->rti_flags |= RTF_GATEWAY;
621145bf6c0SAlexander V. Chernikov 
622145bf6c0SAlexander V. Chernikov 	return (0);
623145bf6c0SAlexander V. Chernikov }
624145bf6c0SAlexander V. Chernikov 
625c83dda36SAlexander V. Chernikov /*
626c83dda36SAlexander V. Chernikov  * Fills in @info based on userland-provided @rtm message.
627c83dda36SAlexander V. Chernikov  *
628c83dda36SAlexander V. Chernikov  * Returns 0 on success.
629c83dda36SAlexander V. Chernikov  */
630c83dda36SAlexander V. Chernikov static int
631b31fbebeSAlexander V. Chernikov fill_addrinfo(struct rt_msghdr *rtm, int len, struct linear_buffer *lb, u_int fibnum,
632b31fbebeSAlexander V. Chernikov     struct rt_addrinfo *info)
633c83dda36SAlexander V. Chernikov {
634c83dda36SAlexander V. Chernikov 	int error;
635c83dda36SAlexander V. Chernikov 	sa_family_t saf;
636c83dda36SAlexander V. Chernikov 
637c83dda36SAlexander V. Chernikov 	rtm->rtm_pid = curproc->p_pid;
638c83dda36SAlexander V. Chernikov 	info->rti_addrs = rtm->rtm_addrs;
639c83dda36SAlexander V. Chernikov 
640c83dda36SAlexander V. Chernikov 	info->rti_mflags = rtm->rtm_inits;
641c83dda36SAlexander V. Chernikov 	info->rti_rmx = &rtm->rtm_rmx;
642c83dda36SAlexander V. Chernikov 
643c83dda36SAlexander V. Chernikov 	/*
644c83dda36SAlexander V. Chernikov 	 * rt_xaddrs() performs s6_addr[2] := sin6_scope_id for AF_INET6
645c83dda36SAlexander V. Chernikov 	 * link-local address because rtrequest requires addresses with
646c83dda36SAlexander V. Chernikov 	 * embedded scope id.
647c83dda36SAlexander V. Chernikov 	 */
648c83dda36SAlexander V. Chernikov 	if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, info))
649c83dda36SAlexander V. Chernikov 		return (EINVAL);
650c83dda36SAlexander V. Chernikov 
651c83dda36SAlexander V. Chernikov 	info->rti_flags = rtm->rtm_flags;
652b31fbebeSAlexander V. Chernikov 	error = cleanup_xaddrs(info, lb);
6532fe5a794SAlexander V. Chernikov 	if (error != 0)
6542fe5a794SAlexander V. Chernikov 		return (error);
655c83dda36SAlexander V. Chernikov 	saf = info->rti_info[RTAX_DST]->sa_family;
656c83dda36SAlexander V. Chernikov 	/*
657c83dda36SAlexander V. Chernikov 	 * Verify that the caller has the appropriate privilege; RTM_GET
658c83dda36SAlexander V. Chernikov 	 * is the only operation the non-superuser is allowed.
659c83dda36SAlexander V. Chernikov 	 */
660c83dda36SAlexander V. Chernikov 	if (rtm->rtm_type != RTM_GET) {
661c83dda36SAlexander V. Chernikov 		error = priv_check(curthread, PRIV_NET_ROUTE);
662c83dda36SAlexander V. Chernikov 		if (error != 0)
663c83dda36SAlexander V. Chernikov 			return (error);
664c83dda36SAlexander V. Chernikov 	}
665c83dda36SAlexander V. Chernikov 
666c83dda36SAlexander V. Chernikov 	/*
667c83dda36SAlexander V. Chernikov 	 * The given gateway address may be an interface address.
668c83dda36SAlexander V. Chernikov 	 * For example, issuing a "route change" command on a route
669c83dda36SAlexander V. Chernikov 	 * entry that was created from a tunnel, and the gateway
670c83dda36SAlexander V. Chernikov 	 * address given is the local end point. In this case the
671c83dda36SAlexander V. Chernikov 	 * RTF_GATEWAY flag must be cleared or the destination will
672c83dda36SAlexander V. Chernikov 	 * not be reachable even though there is no error message.
673c83dda36SAlexander V. Chernikov 	 */
674c83dda36SAlexander V. Chernikov 	if (info->rti_info[RTAX_GATEWAY] != NULL &&
675c83dda36SAlexander V. Chernikov 	    info->rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) {
676c83dda36SAlexander V. Chernikov 		struct rt_addrinfo ginfo;
677c83dda36SAlexander V. Chernikov 		struct sockaddr *gdst;
678c83dda36SAlexander V. Chernikov 		struct sockaddr_storage ss;
679c83dda36SAlexander V. Chernikov 
680c83dda36SAlexander V. Chernikov 		bzero(&ginfo, sizeof(ginfo));
681c83dda36SAlexander V. Chernikov 		bzero(&ss, sizeof(ss));
682c83dda36SAlexander V. Chernikov 		ss.ss_len = sizeof(ss);
683c83dda36SAlexander V. Chernikov 
684c83dda36SAlexander V. Chernikov 		ginfo.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&ss;
685c83dda36SAlexander V. Chernikov 		gdst = info->rti_info[RTAX_GATEWAY];
686c83dda36SAlexander V. Chernikov 
687c83dda36SAlexander V. Chernikov 		/*
688c83dda36SAlexander V. Chernikov 		 * A host route through the loopback interface is
689c83dda36SAlexander V. Chernikov 		 * installed for each interface adddress. In pre 8.0
690c83dda36SAlexander V. Chernikov 		 * releases the interface address of a PPP link type
691c83dda36SAlexander V. Chernikov 		 * is not reachable locally. This behavior is fixed as
692c83dda36SAlexander V. Chernikov 		 * part of the new L2/L3 redesign and rewrite work. The
693c83dda36SAlexander V. Chernikov 		 * signature of this interface address route is the
694aaad3c4fSAlexander V. Chernikov 		 * AF_LINK sa_family type of the gateway, and the
695c83dda36SAlexander V. Chernikov 		 * rt_ifp has the IFF_LOOPBACK flag set.
696c83dda36SAlexander V. Chernikov 		 */
697c83dda36SAlexander V. Chernikov 		if (rib_lookup_info(fibnum, gdst, NHR_REF, 0, &ginfo) == 0) {
698c83dda36SAlexander V. Chernikov 			if (ss.ss_family == AF_LINK &&
699c83dda36SAlexander V. Chernikov 			    ginfo.rti_ifp->if_flags & IFF_LOOPBACK) {
700c83dda36SAlexander V. Chernikov 				info->rti_flags &= ~RTF_GATEWAY;
701c83dda36SAlexander V. Chernikov 				info->rti_flags |= RTF_GWFLAG_COMPAT;
702c83dda36SAlexander V. Chernikov 			}
703c83dda36SAlexander V. Chernikov 			rib_free_info(&ginfo);
704c83dda36SAlexander V. Chernikov 		}
705c83dda36SAlexander V. Chernikov 	}
706c83dda36SAlexander V. Chernikov 
707c83dda36SAlexander V. Chernikov 	return (0);
708c83dda36SAlexander V. Chernikov }
709c83dda36SAlexander V. Chernikov 
710fedeb08bSAlexander V. Chernikov static struct nhop_object *
711fedeb08bSAlexander V. Chernikov select_nhop(struct nhop_object *nh, const struct sockaddr *gw)
712fedeb08bSAlexander V. Chernikov {
713fedeb08bSAlexander V. Chernikov 	if (!NH_IS_NHGRP(nh))
714fedeb08bSAlexander V. Chernikov 		return (nh);
715fedeb08bSAlexander V. Chernikov #ifdef ROUTE_MPATH
716fedeb08bSAlexander V. Chernikov 	struct weightened_nhop *wn;
717fedeb08bSAlexander V. Chernikov 	uint32_t num_nhops;
718fedeb08bSAlexander V. Chernikov 	wn = nhgrp_get_nhops((struct nhgrp_object *)nh, &num_nhops);
719fedeb08bSAlexander V. Chernikov 	if (gw == NULL)
720fedeb08bSAlexander V. Chernikov 		return (wn[0].nh);
721fedeb08bSAlexander V. Chernikov 	for (int i = 0; i < num_nhops; i++) {
722fedeb08bSAlexander V. Chernikov 		if (match_nhop_gw(wn[i].nh, gw))
723fedeb08bSAlexander V. Chernikov 			return (wn[i].nh);
724fedeb08bSAlexander V. Chernikov 	}
725fedeb08bSAlexander V. Chernikov #endif
726fedeb08bSAlexander V. Chernikov 	return (NULL);
727fedeb08bSAlexander V. Chernikov }
728fedeb08bSAlexander V. Chernikov 
729c83dda36SAlexander V. Chernikov /*
730c83dda36SAlexander V. Chernikov  * Handles RTM_GET message from routing socket, returning matching rt.
731c83dda36SAlexander V. Chernikov  *
732c83dda36SAlexander V. Chernikov  * Returns:
733c83dda36SAlexander V. Chernikov  * 0 on success, with locked and referenced matching rt in @rt_nrt
734c83dda36SAlexander V. Chernikov  * errno of failure
735c83dda36SAlexander V. Chernikov  */
736c83dda36SAlexander V. Chernikov static int
737c83dda36SAlexander V. Chernikov handle_rtm_get(struct rt_addrinfo *info, u_int fibnum,
738a287a973SAlexander V. Chernikov     struct rt_msghdr *rtm, struct rib_cmd_info *rc)
739c83dda36SAlexander V. Chernikov {
740c83dda36SAlexander V. Chernikov 	RIB_RLOCK_TRACKER;
741c83dda36SAlexander V. Chernikov 	struct rib_head *rnh;
742fedeb08bSAlexander V. Chernikov 	struct nhop_object *nh;
743c83dda36SAlexander V. Chernikov 	sa_family_t saf;
744c83dda36SAlexander V. Chernikov 
745c83dda36SAlexander V. Chernikov 	saf = info->rti_info[RTAX_DST]->sa_family;
746c83dda36SAlexander V. Chernikov 
747c83dda36SAlexander V. Chernikov 	rnh = rt_tables_get_rnh(fibnum, saf);
748c83dda36SAlexander V. Chernikov 	if (rnh == NULL)
749c83dda36SAlexander V. Chernikov 		return (EAFNOSUPPORT);
750c83dda36SAlexander V. Chernikov 
751c83dda36SAlexander V. Chernikov 	RIB_RLOCK(rnh);
752c83dda36SAlexander V. Chernikov 
7532fe5a794SAlexander V. Chernikov 	/*
7542fe5a794SAlexander V. Chernikov 	 * By (implicit) convention host route (one without netmask)
7552fe5a794SAlexander V. Chernikov 	 * means longest-prefix-match request and the route with netmask
7562fe5a794SAlexander V. Chernikov 	 * means exact-match lookup.
7572fe5a794SAlexander V. Chernikov 	 * As cleanup_xaddrs() cleans up info flags&addrs for the /32,/128
7582fe5a794SAlexander V. Chernikov 	 * prefixes, use original data to check for the netmask presence.
7592fe5a794SAlexander V. Chernikov 	 */
7602fe5a794SAlexander V. Chernikov 	if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
761c83dda36SAlexander V. Chernikov 		/*
762c83dda36SAlexander V. Chernikov 		 * Provide longest prefix match for
763c83dda36SAlexander V. Chernikov 		 * address lookup (no mask).
764c83dda36SAlexander V. Chernikov 		 * 'route -n get addr'
765c83dda36SAlexander V. Chernikov 		 */
766a287a973SAlexander V. Chernikov 		rc->rc_rt = (struct rtentry *) rnh->rnh_matchaddr(
767c83dda36SAlexander V. Chernikov 		    info->rti_info[RTAX_DST], &rnh->head);
768c83dda36SAlexander V. Chernikov 	} else
769a287a973SAlexander V. Chernikov 		rc->rc_rt = (struct rtentry *) rnh->rnh_lookup(
770c83dda36SAlexander V. Chernikov 		    info->rti_info[RTAX_DST],
771c83dda36SAlexander V. Chernikov 		    info->rti_info[RTAX_NETMASK], &rnh->head);
772c83dda36SAlexander V. Chernikov 
773a287a973SAlexander V. Chernikov 	if (rc->rc_rt == NULL) {
774c83dda36SAlexander V. Chernikov 		RIB_RUNLOCK(rnh);
775c83dda36SAlexander V. Chernikov 		return (ESRCH);
776c83dda36SAlexander V. Chernikov 	}
777fedeb08bSAlexander V. Chernikov 
778d68fb8d9SAlexander V. Chernikov 	nh = select_nhop(rt_get_raw_nhop(rc->rc_rt), info->rti_info[RTAX_GATEWAY]);
779fedeb08bSAlexander V. Chernikov 	if (nh == NULL) {
780c83dda36SAlexander V. Chernikov 		RIB_RUNLOCK(rnh);
781c83dda36SAlexander V. Chernikov 		return (ESRCH);
782c83dda36SAlexander V. Chernikov 	}
783c83dda36SAlexander V. Chernikov 	/*
784c83dda36SAlexander V. Chernikov 	 * If performing proxied L2 entry insertion, and
785c83dda36SAlexander V. Chernikov 	 * the actual PPP host entry is found, perform
786c83dda36SAlexander V. Chernikov 	 * another search to retrieve the prefix route of
787c83dda36SAlexander V. Chernikov 	 * the local end point of the PPP link.
788aaad3c4fSAlexander V. Chernikov 	 * TODO: move this logic to userland.
789c83dda36SAlexander V. Chernikov 	 */
790c83dda36SAlexander V. Chernikov 	if (rtm->rtm_flags & RTF_ANNOUNCE) {
791c83dda36SAlexander V. Chernikov 		struct sockaddr laddr;
792c83dda36SAlexander V. Chernikov 
793aaad3c4fSAlexander V. Chernikov 		if (nh->nh_ifp != NULL &&
794aaad3c4fSAlexander V. Chernikov 		    nh->nh_ifp->if_type == IFT_PROPVIRTUAL) {
795c83dda36SAlexander V. Chernikov 			struct ifaddr *ifa;
796c83dda36SAlexander V. Chernikov 
797c83dda36SAlexander V. Chernikov 			ifa = ifa_ifwithnet(info->rti_info[RTAX_DST], 1,
798c83dda36SAlexander V. Chernikov 					RT_ALL_FIBS);
799c83dda36SAlexander V. Chernikov 			if (ifa != NULL)
800c83dda36SAlexander V. Chernikov 				rt_maskedcopy(ifa->ifa_addr,
801c83dda36SAlexander V. Chernikov 					      &laddr,
802c83dda36SAlexander V. Chernikov 					      ifa->ifa_netmask);
803c83dda36SAlexander V. Chernikov 		} else
804aaad3c4fSAlexander V. Chernikov 			rt_maskedcopy(nh->nh_ifa->ifa_addr,
805c83dda36SAlexander V. Chernikov 				      &laddr,
806aaad3c4fSAlexander V. Chernikov 				      nh->nh_ifa->ifa_netmask);
807c83dda36SAlexander V. Chernikov 		/*
808c83dda36SAlexander V. Chernikov 		 * refactor rt and no lock operation necessary
809c83dda36SAlexander V. Chernikov 		 */
810a287a973SAlexander V. Chernikov 		rc->rc_rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr,
811c83dda36SAlexander V. Chernikov 		    &rnh->head);
812a287a973SAlexander V. Chernikov 		if (rc->rc_rt == NULL) {
813c83dda36SAlexander V. Chernikov 			RIB_RUNLOCK(rnh);
814c83dda36SAlexander V. Chernikov 			return (ESRCH);
815c83dda36SAlexander V. Chernikov 		}
816d68fb8d9SAlexander V. Chernikov 		nh = select_nhop(rt_get_raw_nhop(rc->rc_rt), info->rti_info[RTAX_GATEWAY]);
817fedeb08bSAlexander V. Chernikov 		if (nh == NULL) {
818fedeb08bSAlexander V. Chernikov 			RIB_RUNLOCK(rnh);
819fedeb08bSAlexander V. Chernikov 			return (ESRCH);
820c83dda36SAlexander V. Chernikov 		}
821fedeb08bSAlexander V. Chernikov 	}
822fedeb08bSAlexander V. Chernikov 	rc->rc_nh_new = nh;
8232259a030SAlexander V. Chernikov 	rc->rc_nh_weight = rc->rc_rt->rt_weight;
824c83dda36SAlexander V. Chernikov 	RIB_RUNLOCK(rnh);
825c83dda36SAlexander V. Chernikov 
826c83dda36SAlexander V. Chernikov 	return (0);
827c83dda36SAlexander V. Chernikov }
828c83dda36SAlexander V. Chernikov 
829d68fb8d9SAlexander V. Chernikov static void
830d68fb8d9SAlexander V. Chernikov init_sockaddrs_family(int family, struct sockaddr *dst, struct sockaddr *mask)
831d68fb8d9SAlexander V. Chernikov {
832d68fb8d9SAlexander V. Chernikov #ifdef INET
833d68fb8d9SAlexander V. Chernikov 	if (family == AF_INET) {
834d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in *dst4 = (struct sockaddr_in *)dst;
835d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in *mask4 = (struct sockaddr_in *)mask;
836d68fb8d9SAlexander V. Chernikov 
837d68fb8d9SAlexander V. Chernikov 		bzero(dst4, sizeof(struct sockaddr_in));
838d68fb8d9SAlexander V. Chernikov 		bzero(mask4, sizeof(struct sockaddr_in));
839d68fb8d9SAlexander V. Chernikov 
840d68fb8d9SAlexander V. Chernikov 		dst4->sin_family = AF_INET;
841d68fb8d9SAlexander V. Chernikov 		dst4->sin_len = sizeof(struct sockaddr_in);
842d68fb8d9SAlexander V. Chernikov 		mask4->sin_family = AF_INET;
843d68fb8d9SAlexander V. Chernikov 		mask4->sin_len = sizeof(struct sockaddr_in);
844d68fb8d9SAlexander V. Chernikov 	}
845d68fb8d9SAlexander V. Chernikov #endif
846d68fb8d9SAlexander V. Chernikov #ifdef INET6
847d68fb8d9SAlexander V. Chernikov 	if (family == AF_INET6) {
848d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in6 *dst6 = (struct sockaddr_in6 *)dst;
849d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in6 *mask6 = (struct sockaddr_in6 *)mask;
850d68fb8d9SAlexander V. Chernikov 
851d68fb8d9SAlexander V. Chernikov 		bzero(dst6, sizeof(struct sockaddr_in6));
852d68fb8d9SAlexander V. Chernikov 		bzero(mask6, sizeof(struct sockaddr_in6));
853d68fb8d9SAlexander V. Chernikov 
854d68fb8d9SAlexander V. Chernikov 		dst6->sin6_family = AF_INET6;
855d68fb8d9SAlexander V. Chernikov 		dst6->sin6_len = sizeof(struct sockaddr_in6);
856d68fb8d9SAlexander V. Chernikov 		mask6->sin6_family = AF_INET6;
857d68fb8d9SAlexander V. Chernikov 		mask6->sin6_len = sizeof(struct sockaddr_in6);
858d68fb8d9SAlexander V. Chernikov 	}
859d68fb8d9SAlexander V. Chernikov #endif
860d68fb8d9SAlexander V. Chernikov }
861d68fb8d9SAlexander V. Chernikov 
862d68fb8d9SAlexander V. Chernikov static void
863d68fb8d9SAlexander V. Chernikov export_rtaddrs(const struct rtentry *rt, struct sockaddr *dst,
864d68fb8d9SAlexander V. Chernikov     struct sockaddr *mask)
865d68fb8d9SAlexander V. Chernikov {
866d68fb8d9SAlexander V. Chernikov #ifdef INET
867d68fb8d9SAlexander V. Chernikov 	if (dst->sa_family == AF_INET) {
868d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in *dst4 = (struct sockaddr_in *)dst;
869d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in *mask4 = (struct sockaddr_in *)mask;
8702fb4a03dSRyan Libby 		uint32_t scopeid = 0;
871d68fb8d9SAlexander V. Chernikov 		rt_get_inet_prefix_pmask(rt, &dst4->sin_addr, &mask4->sin_addr,
872d68fb8d9SAlexander V. Chernikov 		    &scopeid);
873d68fb8d9SAlexander V. Chernikov 		return;
874d68fb8d9SAlexander V. Chernikov 	}
875d68fb8d9SAlexander V. Chernikov #endif
876d68fb8d9SAlexander V. Chernikov #ifdef INET6
877d68fb8d9SAlexander V. Chernikov 	if (dst->sa_family == AF_INET6) {
878d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in6 *dst6 = (struct sockaddr_in6 *)dst;
879d68fb8d9SAlexander V. Chernikov 		struct sockaddr_in6 *mask6 = (struct sockaddr_in6 *)mask;
8802fb4a03dSRyan Libby 		uint32_t scopeid = 0;
8812fb4a03dSRyan Libby 		rt_get_inet6_prefix_pmask(rt, &dst6->sin6_addr,
8822fb4a03dSRyan Libby 		    &mask6->sin6_addr, &scopeid);
883d68fb8d9SAlexander V. Chernikov 		dst6->sin6_scope_id = scopeid;
884d68fb8d9SAlexander V. Chernikov 		return;
885d68fb8d9SAlexander V. Chernikov 	}
886d68fb8d9SAlexander V. Chernikov #endif
887d68fb8d9SAlexander V. Chernikov }
888d68fb8d9SAlexander V. Chernikov 
889b31fbebeSAlexander V. Chernikov static int
890b31fbebeSAlexander V. Chernikov update_rtm_from_info(struct rt_addrinfo *info, struct rt_msghdr **prtm,
891b31fbebeSAlexander V. Chernikov     int alloc_len)
892b31fbebeSAlexander V. Chernikov {
893b31fbebeSAlexander V. Chernikov 	struct rt_msghdr *rtm, *orig_rtm = NULL;
894b31fbebeSAlexander V. Chernikov 	struct walkarg w;
895b31fbebeSAlexander V. Chernikov 	int len;
896b31fbebeSAlexander V. Chernikov 
897b31fbebeSAlexander V. Chernikov 	rtm = *prtm;
898b31fbebeSAlexander V. Chernikov 	/* Check if we need to realloc storage */
899b31fbebeSAlexander V. Chernikov 	rtsock_msg_buffer(rtm->rtm_type, info, NULL, &len);
900b31fbebeSAlexander V. Chernikov 	if (len > alloc_len) {
901b31fbebeSAlexander V. Chernikov 		struct rt_msghdr *tmp_rtm;
902b31fbebeSAlexander V. Chernikov 
903b31fbebeSAlexander V. Chernikov 		tmp_rtm = malloc(len, M_TEMP, M_NOWAIT);
904b31fbebeSAlexander V. Chernikov 		if (tmp_rtm == NULL)
905b31fbebeSAlexander V. Chernikov 			return (ENOBUFS);
906b31fbebeSAlexander V. Chernikov 		bcopy(rtm, tmp_rtm, rtm->rtm_msglen);
907b31fbebeSAlexander V. Chernikov 		orig_rtm = rtm;
908b31fbebeSAlexander V. Chernikov 		rtm = tmp_rtm;
909b31fbebeSAlexander V. Chernikov 		alloc_len = len;
910b31fbebeSAlexander V. Chernikov 
911b31fbebeSAlexander V. Chernikov 		/*
912b31fbebeSAlexander V. Chernikov 		 * Delay freeing original rtm as info contains
913b31fbebeSAlexander V. Chernikov 		 * data referencing it.
914b31fbebeSAlexander V. Chernikov 		 */
915b31fbebeSAlexander V. Chernikov 	}
916b31fbebeSAlexander V. Chernikov 
917b31fbebeSAlexander V. Chernikov 	w.w_tmem = (caddr_t)rtm;
918b31fbebeSAlexander V. Chernikov 	w.w_tmemsize = alloc_len;
919b31fbebeSAlexander V. Chernikov 	rtsock_msg_buffer(rtm->rtm_type, info, &w, &len);
920b31fbebeSAlexander V. Chernikov 	rtm->rtm_addrs = info->rti_addrs;
921b31fbebeSAlexander V. Chernikov 
922b31fbebeSAlexander V. Chernikov 	if (orig_rtm != NULL)
923b31fbebeSAlexander V. Chernikov 		free(orig_rtm, M_TEMP);
924b31fbebeSAlexander V. Chernikov 	*prtm = rtm;
925b31fbebeSAlexander V. Chernikov 	return (0);
926b31fbebeSAlexander V. Chernikov }
927b31fbebeSAlexander V. Chernikov 
928d68fb8d9SAlexander V. Chernikov 
929c83dda36SAlexander V. Chernikov /*
930592d300eSAlexander V. Chernikov  * Update sockaddrs, flags, etc in @prtm based on @rc data.
931c83dda36SAlexander V. Chernikov  * rtm can be reallocated.
932c83dda36SAlexander V. Chernikov  *
933c83dda36SAlexander V. Chernikov  * Returns 0 on success, along with pointer to (potentially reallocated)
934c83dda36SAlexander V. Chernikov  *  rtm.
935c83dda36SAlexander V. Chernikov  *
936c83dda36SAlexander V. Chernikov  */
937c83dda36SAlexander V. Chernikov static int
938592d300eSAlexander V. Chernikov update_rtm_from_rc(struct rt_addrinfo *info, struct rt_msghdr **prtm,
939592d300eSAlexander V. Chernikov     int alloc_len, struct rib_cmd_info *rc, struct nhop_object *nh)
940c83dda36SAlexander V. Chernikov {
941c83dda36SAlexander V. Chernikov 	union sockaddr_union saun;
942b31fbebeSAlexander V. Chernikov 	struct rt_msghdr *rtm;
943c83dda36SAlexander V. Chernikov 	struct ifnet *ifp;
944b31fbebeSAlexander V. Chernikov 	int error;
945c83dda36SAlexander V. Chernikov 
946c83dda36SAlexander V. Chernikov 	rtm = *prtm;
947d68fb8d9SAlexander V. Chernikov 	union sockaddr_union sa_dst, sa_mask;
948d68fb8d9SAlexander V. Chernikov 	int family = info->rti_info[RTAX_DST]->sa_family;
949d68fb8d9SAlexander V. Chernikov 	init_sockaddrs_family(family, &sa_dst.sa, &sa_mask.sa);
950d68fb8d9SAlexander V. Chernikov 	export_rtaddrs(rc->rc_rt, &sa_dst.sa, &sa_mask.sa);
951c83dda36SAlexander V. Chernikov 
952d68fb8d9SAlexander V. Chernikov 	info->rti_info[RTAX_DST] = &sa_dst.sa;
953d68fb8d9SAlexander V. Chernikov 	info->rti_info[RTAX_NETMASK] = rt_is_host(rc->rc_rt) ? NULL : &sa_mask.sa;
954aaad3c4fSAlexander V. Chernikov 	info->rti_info[RTAX_GATEWAY] = &nh->gw_sa;
955c83dda36SAlexander V. Chernikov 	info->rti_info[RTAX_GENMASK] = 0;
956aaad3c4fSAlexander V. Chernikov 	ifp = nh->nh_ifp;
957c83dda36SAlexander V. Chernikov 	if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
958c83dda36SAlexander V. Chernikov 		if (ifp) {
959c83dda36SAlexander V. Chernikov 			info->rti_info[RTAX_IFP] =
960c83dda36SAlexander V. Chernikov 			    ifp->if_addr->ifa_addr;
961aaad3c4fSAlexander V. Chernikov 			error = rtm_get_jailed(info, ifp, nh,
962c83dda36SAlexander V. Chernikov 			    &saun, curthread->td_ucred);
963c83dda36SAlexander V. Chernikov 			if (error != 0)
964c83dda36SAlexander V. Chernikov 				return (error);
965c83dda36SAlexander V. Chernikov 			if (ifp->if_flags & IFF_POINTOPOINT)
966c83dda36SAlexander V. Chernikov 				info->rti_info[RTAX_BRD] =
967aaad3c4fSAlexander V. Chernikov 				    nh->nh_ifa->ifa_dstaddr;
968c83dda36SAlexander V. Chernikov 			rtm->rtm_index = ifp->if_index;
969c83dda36SAlexander V. Chernikov 		} else {
970c83dda36SAlexander V. Chernikov 			info->rti_info[RTAX_IFP] = NULL;
971c83dda36SAlexander V. Chernikov 			info->rti_info[RTAX_IFA] = NULL;
972c83dda36SAlexander V. Chernikov 		}
973c83dda36SAlexander V. Chernikov 	} else if (ifp != NULL)
974c83dda36SAlexander V. Chernikov 		rtm->rtm_index = ifp->if_index;
975c83dda36SAlexander V. Chernikov 
976b31fbebeSAlexander V. Chernikov 	if ((error = update_rtm_from_info(info, prtm, alloc_len)) != 0)
977b31fbebeSAlexander V. Chernikov 		return (error);
978c83dda36SAlexander V. Chernikov 
97976cfc6faSAlexander V. Chernikov 	rtm = *prtm;
980592d300eSAlexander V. Chernikov 	rtm->rtm_flags = rc->rc_rt->rte_flags | nhop_get_rtflags(nh);
981592d300eSAlexander V. Chernikov 	if (rtm->rtm_flags & RTF_GWFLAG_COMPAT)
982c83dda36SAlexander V. Chernikov 		rtm->rtm_flags = RTF_GATEWAY |
983592d300eSAlexander V. Chernikov 			(rtm->rtm_flags & ~RTF_GWFLAG_COMPAT);
984592d300eSAlexander V. Chernikov 	rt_getmetrics(rc->rc_rt, nh, &rtm->rtm_rmx);
985592d300eSAlexander V. Chernikov 	rtm->rtm_rmx.rmx_weight = rc->rc_nh_weight;
986c83dda36SAlexander V. Chernikov 
987c83dda36SAlexander V. Chernikov 	return (0);
988c83dda36SAlexander V. Chernikov }
989c83dda36SAlexander V. Chernikov 
9909c584fa4SAlexander V. Chernikov #ifdef ROUTE_MPATH
991fedeb08bSAlexander V. Chernikov static void
992fedeb08bSAlexander V. Chernikov save_del_notification(struct rib_cmd_info *rc, void *_cbdata)
993fedeb08bSAlexander V. Chernikov {
994fedeb08bSAlexander V. Chernikov 	struct rib_cmd_info *rc_new = (struct rib_cmd_info *)_cbdata;
995fedeb08bSAlexander V. Chernikov 
996fedeb08bSAlexander V. Chernikov 	if (rc->rc_cmd == RTM_DELETE)
997fedeb08bSAlexander V. Chernikov 		*rc_new = *rc;
998fedeb08bSAlexander V. Chernikov }
999fedeb08bSAlexander V. Chernikov 
1000fedeb08bSAlexander V. Chernikov static void
1001fedeb08bSAlexander V. Chernikov save_add_notification(struct rib_cmd_info *rc, void *_cbdata)
1002fedeb08bSAlexander V. Chernikov {
1003fedeb08bSAlexander V. Chernikov 	struct rib_cmd_info *rc_new = (struct rib_cmd_info *)_cbdata;
1004fedeb08bSAlexander V. Chernikov 
1005fedeb08bSAlexander V. Chernikov 	if (rc->rc_cmd == RTM_ADD)
1006fedeb08bSAlexander V. Chernikov 		*rc_new = *rc;
1007fedeb08bSAlexander V. Chernikov }
10089c584fa4SAlexander V. Chernikov #endif
1009fedeb08bSAlexander V. Chernikov 
1010a3c2c06bSBjoern A. Zeeb #if defined(INET6) || defined(INET)
1011b31fbebeSAlexander V. Chernikov static struct sockaddr *
1012b31fbebeSAlexander V. Chernikov alloc_sockaddr_aligned(struct linear_buffer *lb, int len)
1013b31fbebeSAlexander V. Chernikov {
101425682e6aSAlexander V. Chernikov 	len = roundup2(len, sizeof(uint64_t));
1015b31fbebeSAlexander V. Chernikov 	if (lb->offset + len > lb->size)
1016b31fbebeSAlexander V. Chernikov 		return (NULL);
1017b31fbebeSAlexander V. Chernikov 	struct sockaddr *sa = (struct sockaddr *)(lb->base + lb->offset);
1018b31fbebeSAlexander V. Chernikov 	lb->offset += len;
1019b31fbebeSAlexander V. Chernikov 	return (sa);
1020b31fbebeSAlexander V. Chernikov }
1021a3c2c06bSBjoern A. Zeeb #endif
1022b31fbebeSAlexander V. Chernikov 
1023df8bae1dSRodney W. Grimes /*ARGSUSED*/
102452041295SPoul-Henning Kamp static int
102573d76e77SKevin Lo route_output(struct mbuf *m, struct socket *so, ...)
1026df8bae1dSRodney W. Grimes {
10275dfc91d7SLuigi Rizzo 	struct rt_msghdr *rtm = NULL;
10285dfc91d7SLuigi Rizzo 	struct rtentry *rt = NULL;
1029df8bae1dSRodney W. Grimes 	struct rt_addrinfo info;
1030b8a6e03fSGleb Smirnoff 	struct epoch_tracker et;
10313deb3649SAlexander V. Chernikov #ifdef INET6
1032d9302031SAlexander V. Chernikov 	struct sockaddr_storage ss;
10336bbfef90SHiroki Sato 	struct sockaddr_in6 *sin6;
10340bebb544SHiroki Sato 	int i, rti_need_deembed = 0;
10356bbfef90SHiroki Sato #endif
1036f2e5eb36SAlexander V. Chernikov 	int alloc_len = 0, len, error = 0, fibnum;
10373ca1a2d6SMax Laier 	sa_family_t saf = AF_UNSPEC;
1038a287a973SAlexander V. Chernikov 	struct rib_cmd_info rc;
1039a287a973SAlexander V. Chernikov 	struct nhop_object *nh;
1040df8bae1dSRodney W. Grimes 
1041f5d9a696SAlexander V. Chernikov 	fibnum = so->so_fibnum;
1042df8bae1dSRodney W. Grimes #define senderr(e) { error = e; goto flush;}
10435dfc91d7SLuigi Rizzo 	if (m == NULL || ((m->m_len < sizeof(long)) &&
10445dfc91d7SLuigi Rizzo 		       (m = m_pullup(m, sizeof(long))) == NULL))
1045df8bae1dSRodney W. Grimes 		return (ENOBUFS);
1046df8bae1dSRodney W. Grimes 	if ((m->m_flags & M_PKTHDR) == 0)
1047df8bae1dSRodney W. Grimes 		panic("route_output");
1048b8a6e03fSGleb Smirnoff 	NET_EPOCH_ENTER(et);
1049df8bae1dSRodney W. Grimes 	len = m->m_pkthdr.len;
1050df8bae1dSRodney W. Grimes 	if (len < sizeof(*rtm) ||
1051f1fcb552SAlexander V. Chernikov 	    len != mtod(m, struct rt_msghdr *)->rtm_msglen)
1052df8bae1dSRodney W. Grimes 		senderr(EINVAL);
1053f1fcb552SAlexander V. Chernikov 
1054f2e5eb36SAlexander V. Chernikov 	/*
1055f2e5eb36SAlexander V. Chernikov 	 * Most of current messages are in range 200-240 bytes,
1056d9437c0fSAlexander V. Chernikov 	 * minimize possible re-allocation on reply using larger size
1057d9437c0fSAlexander V. Chernikov 	 * buffer aligned on 1k boundaty.
1058f2e5eb36SAlexander V. Chernikov 	 */
1059f2e5eb36SAlexander V. Chernikov 	alloc_len = roundup2(len, 1024);
1060b31fbebeSAlexander V. Chernikov 	int total_len = alloc_len + SCRATCH_BUFFER_SIZE;
1061b31fbebeSAlexander V. Chernikov 	if ((rtm = malloc(total_len, M_TEMP, M_NOWAIT)) == NULL)
1062df8bae1dSRodney W. Grimes 		senderr(ENOBUFS);
1063f2e5eb36SAlexander V. Chernikov 
1064df8bae1dSRodney W. Grimes 	m_copydata(m, 0, len, (caddr_t)rtm);
1065f1fcb552SAlexander V. Chernikov 	bzero(&info, sizeof(info));
1066a287a973SAlexander V. Chernikov 	nh = NULL;
1067b31fbebeSAlexander V. Chernikov 	struct linear_buffer lb = {
1068b31fbebeSAlexander V. Chernikov 		.base = (char *)rtm + alloc_len,
1069b31fbebeSAlexander V. Chernikov 		.size = SCRATCH_BUFFER_SIZE,
1070b31fbebeSAlexander V. Chernikov 	};
1071f1fcb552SAlexander V. Chernikov 
1072df8bae1dSRodney W. Grimes 	if (rtm->rtm_version != RTM_VERSION) {
1073f1fcb552SAlexander V. Chernikov 		/* Do not touch message since format is unknown */
1074f2e5eb36SAlexander V. Chernikov 		free(rtm, M_TEMP);
1075f1fcb552SAlexander V. Chernikov 		rtm = NULL;
1076df8bae1dSRodney W. Grimes 		senderr(EPROTONOSUPPORT);
1077df8bae1dSRodney W. Grimes 	}
1078f1fcb552SAlexander V. Chernikov 
1079f1fcb552SAlexander V. Chernikov 	/*
1080f1fcb552SAlexander V. Chernikov 	 * Starting from here, it is possible
1081f1fcb552SAlexander V. Chernikov 	 * to alter original message and insert
1082f1fcb552SAlexander V. Chernikov 	 * caller PID and error value.
1083f1fcb552SAlexander V. Chernikov 	 */
1084f1fcb552SAlexander V. Chernikov 
1085b31fbebeSAlexander V. Chernikov 	if ((error = fill_addrinfo(rtm, len, &lb, fibnum, &info)) != 0) {
1086dadb6c3bSRuslan Ermilov 		senderr(error);
1087acd3428bSRobert Watson 	}
1088b31fbebeSAlexander V. Chernikov 	/* fill_addringo() embeds scope into IPv6 addresses */
1089b31fbebeSAlexander V. Chernikov #ifdef INET6
1090b31fbebeSAlexander V. Chernikov 	rti_need_deembed = 1;
1091b31fbebeSAlexander V. Chernikov #endif
1092162c0b2eSRuslan Ermilov 
1093c83dda36SAlexander V. Chernikov 	saf = info.rti_info[RTAX_DST]->sa_family;
10949231d35fSQing Li 
1095c83dda36SAlexander V. Chernikov 	/* support for new ARP code */
1096c83dda36SAlexander V. Chernikov 	if (rtm->rtm_flags & RTF_LLDATA) {
1097c83dda36SAlexander V. Chernikov 		error = lla_rt_output(rtm, &info);
1098c83dda36SAlexander V. Chernikov 		goto flush;
10999231d35fSQing Li 	}
11009231d35fSQing Li 
1101145bf6c0SAlexander V. Chernikov 	union sockaddr_union gw_saun;
1102145bf6c0SAlexander V. Chernikov 	int blackhole_flags = rtm->rtm_flags & (RTF_BLACKHOLE|RTF_REJECT);
1103145bf6c0SAlexander V. Chernikov 	if (blackhole_flags != 0) {
1104145bf6c0SAlexander V. Chernikov 		if (blackhole_flags != (RTF_BLACKHOLE | RTF_REJECT))
1105145bf6c0SAlexander V. Chernikov 			error = fill_blackholeinfo(&info, &gw_saun);
1106145bf6c0SAlexander V. Chernikov 		else
1107145bf6c0SAlexander V. Chernikov 			error = EINVAL;
1108145bf6c0SAlexander V. Chernikov 		if (error != 0)
1109145bf6c0SAlexander V. Chernikov 			senderr(error);
1110145bf6c0SAlexander V. Chernikov 	}
1111145bf6c0SAlexander V. Chernikov 
1112df8bae1dSRodney W. Grimes 	switch (rtm->rtm_type) {
1113df8bae1dSRodney W. Grimes 	case RTM_ADD:
1114c77462ddSAlexander V. Chernikov 	case RTM_CHANGE:
1115b3b6ff23SRyan Stone 		if (rtm->rtm_type == RTM_ADD) {
11165dfc91d7SLuigi Rizzo 			if (info.rti_info[RTAX_GATEWAY] == NULL)
1117df8bae1dSRodney W. Grimes 				senderr(EINVAL);
1118b3b6ff23SRyan Stone 		}
1119a287a973SAlexander V. Chernikov 		error = rib_action(fibnum, rtm->rtm_type, &info, &rc);
1120a287a973SAlexander V. Chernikov 		if (error == 0) {
1121fedeb08bSAlexander V. Chernikov #ifdef ROUTE_MPATH
1122fedeb08bSAlexander V. Chernikov 			if (NH_IS_NHGRP(rc.rc_nh_new) ||
1123fedeb08bSAlexander V. Chernikov 			    (rc.rc_nh_old && NH_IS_NHGRP(rc.rc_nh_old))) {
1124fedeb08bSAlexander V. Chernikov 				struct rib_cmd_info rc_simple = {};
1125fedeb08bSAlexander V. Chernikov 				rib_decompose_notification(&rc,
1126fedeb08bSAlexander V. Chernikov 				    save_add_notification, (void *)&rc_simple);
1127fedeb08bSAlexander V. Chernikov 				rc = rc_simple;
1128fedeb08bSAlexander V. Chernikov 			}
1129fedeb08bSAlexander V. Chernikov #endif
1130a287a973SAlexander V. Chernikov 			nh = rc.rc_nh_new;
1131592d300eSAlexander V. Chernikov 			rtm->rtm_index = nh->nh_ifp->if_index;
11321b95005eSAlexander V. Chernikov 			rtm->rtm_flags = rc.rc_rt->rte_flags | nhop_get_rtflags(nh);
1133df8bae1dSRodney W. Grimes 		}
1134df8bae1dSRodney W. Grimes 		break;
1135df8bae1dSRodney W. Grimes 
1136df8bae1dSRodney W. Grimes 	case RTM_DELETE:
1137a287a973SAlexander V. Chernikov 		error = rib_action(fibnum, RTM_DELETE, &info, &rc);
113878a82810SGarrett Wollman 		if (error == 0) {
1139fedeb08bSAlexander V. Chernikov #ifdef ROUTE_MPATH
1140fedeb08bSAlexander V. Chernikov 			if (NH_IS_NHGRP(rc.rc_nh_old) ||
1141fedeb08bSAlexander V. Chernikov 			    (rc.rc_nh_new && NH_IS_NHGRP(rc.rc_nh_new))) {
1142fedeb08bSAlexander V. Chernikov 				struct rib_cmd_info rc_simple = {};
1143fedeb08bSAlexander V. Chernikov 				rib_decompose_notification(&rc,
1144fedeb08bSAlexander V. Chernikov 				    save_del_notification, (void *)&rc_simple);
1145fedeb08bSAlexander V. Chernikov 				rc = rc_simple;
1146fedeb08bSAlexander V. Chernikov 			}
1147fedeb08bSAlexander V. Chernikov #endif
1148a287a973SAlexander V. Chernikov 			nh = rc.rc_nh_old;
114978a82810SGarrett Wollman 		}
1150df8bae1dSRodney W. Grimes 		break;
1151df8bae1dSRodney W. Grimes 
1152df8bae1dSRodney W. Grimes 	case RTM_GET:
1153a287a973SAlexander V. Chernikov 		error = handle_rtm_get(&info, fibnum, rtm, &rc);
1154c83dda36SAlexander V. Chernikov 		if (error != 0)
1155c83dda36SAlexander V. Chernikov 			senderr(error);
1156a287a973SAlexander V. Chernikov 		nh = rc.rc_nh_new;
1157956b0b65SJeffrey Hsu 
1158d68fb8d9SAlexander V. Chernikov 		if (!can_export_rte(curthread->td_ucred,
1159d68fb8d9SAlexander V. Chernikov 		    info.rti_info[RTAX_NETMASK] == NULL,
1160d68fb8d9SAlexander V. Chernikov 		    info.rti_info[RTAX_DST])) {
1161813dd6aeSBjoern A. Zeeb 			senderr(ESRCH);
1162813dd6aeSBjoern A. Zeeb 		}
1163b31fbebeSAlexander V. Chernikov 		break;
1164a287a973SAlexander V. Chernikov 
1165b31fbebeSAlexander V. Chernikov 	default:
1166b31fbebeSAlexander V. Chernikov 		senderr(EOPNOTSUPP);
1167b31fbebeSAlexander V. Chernikov 	}
1168b31fbebeSAlexander V. Chernikov 
1169b31fbebeSAlexander V. Chernikov 	if (error == 0) {
1170592d300eSAlexander V. Chernikov 		error = update_rtm_from_rc(&info, &rtm, alloc_len, &rc, nh);
1171c83dda36SAlexander V. Chernikov 		/*
1172c83dda36SAlexander V. Chernikov 		 * Note that some sockaddr pointers may have changed to
1173c83dda36SAlexander V. Chernikov 		 * point to memory outsize @rtm. Some may be pointing
1174c83dda36SAlexander V. Chernikov 		 * to the on-stack variables.
1175c83dda36SAlexander V. Chernikov 		 * Given that, any pointer in @info CANNOT BE USED.
1176c83dda36SAlexander V. Chernikov 		 */
1177c83dda36SAlexander V. Chernikov 
1178c83dda36SAlexander V. Chernikov 		/*
1179c83dda36SAlexander V. Chernikov 		 * scopeid deembedding has been performed while
1180c83dda36SAlexander V. Chernikov 		 * writing updated rtm in rtsock_msg_buffer().
1181c83dda36SAlexander V. Chernikov 		 * With that in mind, skip deembedding procedure below.
1182c83dda36SAlexander V. Chernikov 		 */
1183d9302031SAlexander V. Chernikov #ifdef INET6
1184c83dda36SAlexander V. Chernikov 		rti_need_deembed = 0;
1185d9302031SAlexander V. Chernikov #endif
1186df8bae1dSRodney W. Grimes 	}
1187df8bae1dSRodney W. Grimes 
1188df8bae1dSRodney W. Grimes flush:
1189b8a6e03fSGleb Smirnoff 	NET_EPOCH_EXIT(et);
11902bbab0afSAlexander V. Chernikov 	rt = NULL;
119192c227afSAlexander V. Chernikov 
11920bebb544SHiroki Sato #ifdef INET6
1193c83dda36SAlexander V. Chernikov 	if (rtm != NULL) {
11940bebb544SHiroki Sato 		if (rti_need_deembed) {
11950bebb544SHiroki Sato 			/* sin6_scope_id is recovered before sending rtm. */
11960bebb544SHiroki Sato 			sin6 = (struct sockaddr_in6 *)&ss;
119712bdf23aSHiroki Sato 			for (i = 0; i < RTAX_MAX; i++) {
11980bebb544SHiroki Sato 				if (info.rti_info[i] == NULL)
11990bebb544SHiroki Sato 					continue;
12000bebb544SHiroki Sato 				if (info.rti_info[i]->sa_family != AF_INET6)
12010bebb544SHiroki Sato 					continue;
12020bebb544SHiroki Sato 				bcopy(info.rti_info[i], sin6, sizeof(*sin6));
12030bebb544SHiroki Sato 				if (sa6_recoverscope(sin6) == 0)
12040bebb544SHiroki Sato 					bcopy(sin6, info.rti_info[i],
12050bebb544SHiroki Sato 						    sizeof(*sin6));
12060bebb544SHiroki Sato 			}
1207b31fbebeSAlexander V. Chernikov 			if (update_rtm_from_info(&info, &rtm, alloc_len) != 0) {
1208b31fbebeSAlexander V. Chernikov 				if (error != 0)
1209b31fbebeSAlexander V. Chernikov 					error = ENOBUFS;
1210b31fbebeSAlexander V. Chernikov 			}
12110bebb544SHiroki Sato 		}
1212c83dda36SAlexander V. Chernikov 	}
12130bebb544SHiroki Sato #endif
1214c83dda36SAlexander V. Chernikov 	send_rtm_reply(so, rtm, m, saf, fibnum, error);
1215c83dda36SAlexander V. Chernikov 
1216c83dda36SAlexander V. Chernikov 	return (error);
1217c83dda36SAlexander V. Chernikov }
1218c83dda36SAlexander V. Chernikov 
1219c83dda36SAlexander V. Chernikov /*
1220c83dda36SAlexander V. Chernikov  * Sends the prepared reply message in @rtm to all rtsock clients.
1221c83dda36SAlexander V. Chernikov  * Frees @m and @rtm.
1222c83dda36SAlexander V. Chernikov  *
1223c83dda36SAlexander V. Chernikov  */
1224c83dda36SAlexander V. Chernikov static void
1225c83dda36SAlexander V. Chernikov send_rtm_reply(struct socket *so, struct rt_msghdr *rtm, struct mbuf *m,
1226c83dda36SAlexander V. Chernikov     sa_family_t saf, u_int fibnum, int rtm_errno)
1227c83dda36SAlexander V. Chernikov {
1228c83dda36SAlexander V. Chernikov 	struct rawcb *rp = NULL;
1229c83dda36SAlexander V. Chernikov 
1230c83dda36SAlexander V. Chernikov 	/*
1231c83dda36SAlexander V. Chernikov 	 * Check to see if we don't want our own messages.
1232c83dda36SAlexander V. Chernikov 	 */
1233c83dda36SAlexander V. Chernikov 	if ((so->so_options & SO_USELOOPBACK) == 0) {
1234c83dda36SAlexander V. Chernikov 		if (V_route_cb.any_count <= 1) {
1235c83dda36SAlexander V. Chernikov 			if (rtm != NULL)
1236c83dda36SAlexander V. Chernikov 				free(rtm, M_TEMP);
1237c83dda36SAlexander V. Chernikov 			m_freem(m);
1238c83dda36SAlexander V. Chernikov 			return;
1239c83dda36SAlexander V. Chernikov 		}
1240c83dda36SAlexander V. Chernikov 		/* There is another listener, so construct message */
1241c83dda36SAlexander V. Chernikov 		rp = sotorawcb(so);
1242c83dda36SAlexander V. Chernikov 	}
1243c83dda36SAlexander V. Chernikov 
1244c83dda36SAlexander V. Chernikov 	if (rtm != NULL) {
1245c83dda36SAlexander V. Chernikov 		if (rtm_errno!= 0)
1246c83dda36SAlexander V. Chernikov 			rtm->rtm_errno = rtm_errno;
124792c227afSAlexander V. Chernikov 		else
124892c227afSAlexander V. Chernikov 			rtm->rtm_flags |= RTF_DONE;
124992c227afSAlexander V. Chernikov 
1250df8bae1dSRodney W. Grimes 		m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
125103311056SHajimu UMEMOTO 		if (m->m_pkthdr.len < rtm->rtm_msglen) {
125203311056SHajimu UMEMOTO 			m_freem(m);
125303311056SHajimu UMEMOTO 			m = NULL;
125403311056SHajimu UMEMOTO 		} else if (m->m_pkthdr.len > rtm->rtm_msglen)
125503311056SHajimu UMEMOTO 			m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
1256f2e5eb36SAlexander V. Chernikov 
1257f2e5eb36SAlexander V. Chernikov 		free(rtm, M_TEMP);
1258df8bae1dSRodney W. Grimes 	}
125992c227afSAlexander V. Chernikov 	if (m != NULL) {
1260773aa053SAlexander V. Chernikov 		M_SETFIB(m, fibnum);
1261528737fdSBjoern A. Zeeb 		m->m_flags |= RTS_FILTER_FIB;
1262becc44d7SSam Leffler 		if (rp) {
1263becc44d7SSam Leffler 			/*
1264becc44d7SSam Leffler 			 * XXX insure we don't get a copy by
1265becc44d7SSam Leffler 			 * invalidating our protocol
1266becc44d7SSam Leffler 			 */
1267becc44d7SSam Leffler 			unsigned short family = rp->rcb_proto.sp_family;
1268becc44d7SSam Leffler 			rp->rcb_proto.sp_family = 0;
12693ca1a2d6SMax Laier 			rt_dispatch(m, saf);
1270becc44d7SSam Leffler 			rp->rcb_proto.sp_family = family;
1271becc44d7SSam Leffler 		} else
12723ca1a2d6SMax Laier 			rt_dispatch(m, saf);
1273becc44d7SSam Leffler 	}
1274df8bae1dSRodney W. Grimes }
1275df8bae1dSRodney W. Grimes 
127652041295SPoul-Henning Kamp static void
127793bfd365SAlexander V. Chernikov rt_getmetrics(const struct rtentry *rt, const struct nhop_object *nh,
127893bfd365SAlexander V. Chernikov     struct rt_metrics *out)
127997d8d152SAndre Oppermann {
1280e3a7aa6fSGleb Smirnoff 
128197d8d152SAndre Oppermann 	bzero(out, sizeof(*out));
128293bfd365SAlexander V. Chernikov 	out->rmx_mtu = nh->nh_mtu;
1283e3a7aa6fSGleb Smirnoff 	out->rmx_weight = rt->rt_weight;
128493bfd365SAlexander V. Chernikov 	out->rmx_nhidx = nhop_get_idx(nh);
1285e27c3f48SOleg Bulyzhin 	/* Kernel -> userland timebase conversion. */
1286e3a7aa6fSGleb Smirnoff 	out->rmx_expire = rt->rt_expire ?
1287e3a7aa6fSGleb Smirnoff 	    rt->rt_expire - time_uptime + time_second : 0;
128897d8d152SAndre Oppermann }
128997d8d152SAndre Oppermann 
12907f33a738SJulian Elischer /*
12917f33a738SJulian Elischer  * Extract the addresses of the passed sockaddrs.
12927f33a738SJulian Elischer  * Do a little sanity checking so as to avoid bad memory references.
1293076d0761SJulian Elischer  * This data is derived straight from userland.
12947f33a738SJulian Elischer  */
1295076d0761SJulian Elischer static int
1296becc44d7SSam Leffler rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
1297df8bae1dSRodney W. Grimes {
1298e74642dfSLuigi Rizzo 	struct sockaddr *sa;
1299e74642dfSLuigi Rizzo 	int i;
1300df8bae1dSRodney W. Grimes 
1301becc44d7SSam Leffler 	for (i = 0; i < RTAX_MAX && cp < cplim; i++) {
1302df8bae1dSRodney W. Grimes 		if ((rtinfo->rti_addrs & (1 << i)) == 0)
1303df8bae1dSRodney W. Grimes 			continue;
1304ff6d0a59SJulian Elischer 		sa = (struct sockaddr *)cp;
13057f33a738SJulian Elischer 		/*
1306076d0761SJulian Elischer 		 * It won't fit.
13077f33a738SJulian Elischer 		 */
1308becc44d7SSam Leffler 		if (cp + sa->sa_len > cplim)
1309076d0761SJulian Elischer 			return (EINVAL);
13107f33a738SJulian Elischer 		/*
13117f33a738SJulian Elischer 		 * there are no more.. quit now
13127f33a738SJulian Elischer 		 * If there are more bits, they are in error.
13137f33a738SJulian Elischer 		 * I've seen this. route(1) can evidently generate these.
13147f33a738SJulian Elischer 		 * This causes kernel to core dump.
1315076d0761SJulian Elischer 		 * for compatibility, If we see this, point to a safe address.
13167f33a738SJulian Elischer 		 */
1317076d0761SJulian Elischer 		if (sa->sa_len == 0) {
1318076d0761SJulian Elischer 			rtinfo->rti_info[i] = &sa_zero;
1319076d0761SJulian Elischer 			return (0); /* should be EINVAL but for compat */
1320df8bae1dSRodney W. Grimes 		}
1321076d0761SJulian Elischer 		/* accept it */
13220bebb544SHiroki Sato #ifdef INET6
13230bebb544SHiroki Sato 		if (sa->sa_family == AF_INET6)
13240bebb544SHiroki Sato 			sa6_embedscope((struct sockaddr_in6 *)sa,
13250bebb544SHiroki Sato 			    V_ip6_use_defzone);
13260bebb544SHiroki Sato #endif
1327076d0761SJulian Elischer 		rtinfo->rti_info[i] = sa;
1328e74642dfSLuigi Rizzo 		cp += SA_SIZE(sa);
1329076d0761SJulian Elischer 	}
1330076d0761SJulian Elischer 	return (0);
1331df8bae1dSRodney W. Grimes }
1332df8bae1dSRodney W. Grimes 
1333a4513bacSAlexander V. Chernikov #ifdef INET
13342fe5a794SAlexander V. Chernikov static inline void
13352fe5a794SAlexander V. Chernikov fill_sockaddr_inet(struct sockaddr_in *sin, struct in_addr addr)
13362fe5a794SAlexander V. Chernikov {
13372fe5a794SAlexander V. Chernikov 
13382fe5a794SAlexander V. Chernikov 	const struct sockaddr_in nsin = {
13392fe5a794SAlexander V. Chernikov 		.sin_family = AF_INET,
13402fe5a794SAlexander V. Chernikov 		.sin_len = sizeof(struct sockaddr_in),
13412fe5a794SAlexander V. Chernikov 		.sin_addr = addr,
13422fe5a794SAlexander V. Chernikov 	};
13432fe5a794SAlexander V. Chernikov 	*sin = nsin;
13442fe5a794SAlexander V. Chernikov }
1345a4513bacSAlexander V. Chernikov #endif
13462fe5a794SAlexander V. Chernikov 
1347a4513bacSAlexander V. Chernikov #ifdef INET6
13482fe5a794SAlexander V. Chernikov static inline void
13492fe5a794SAlexander V. Chernikov fill_sockaddr_inet6(struct sockaddr_in6 *sin6, const struct in6_addr *addr6,
13502fe5a794SAlexander V. Chernikov     uint32_t scopeid)
13512fe5a794SAlexander V. Chernikov {
13522fe5a794SAlexander V. Chernikov 
13532fe5a794SAlexander V. Chernikov 	const struct sockaddr_in6 nsin6 = {
13542fe5a794SAlexander V. Chernikov 		.sin6_family = AF_INET6,
13552fe5a794SAlexander V. Chernikov 		.sin6_len = sizeof(struct sockaddr_in6),
13562fe5a794SAlexander V. Chernikov 		.sin6_addr = *addr6,
13572fe5a794SAlexander V. Chernikov 		.sin6_scope_id = scopeid,
13582fe5a794SAlexander V. Chernikov 	};
13592fe5a794SAlexander V. Chernikov 	*sin6 = nsin6;
13602fe5a794SAlexander V. Chernikov }
1361a4513bacSAlexander V. Chernikov #endif
13622fe5a794SAlexander V. Chernikov 
1363a3c2c06bSBjoern A. Zeeb #if defined(INET6) || defined(INET)
1364e5b394f2SAlexander V. Chernikov /*
1365e5b394f2SAlexander V. Chernikov  * Checks if gateway is suitable for lltable operations.
1366e5b394f2SAlexander V. Chernikov  * Lltable code requires AF_LINK gateway with ifindex
1367e5b394f2SAlexander V. Chernikov  *  and mac address specified.
1368e5b394f2SAlexander V. Chernikov  * Returns 0 on success.
1369e5b394f2SAlexander V. Chernikov  */
1370e5b394f2SAlexander V. Chernikov static int
1371e5b394f2SAlexander V. Chernikov cleanup_xaddrs_lladdr(struct rt_addrinfo *info)
1372e5b394f2SAlexander V. Chernikov {
1373e5b394f2SAlexander V. Chernikov 	struct sockaddr_dl *sdl = (struct sockaddr_dl *)info->rti_info[RTAX_GATEWAY];
1374e5b394f2SAlexander V. Chernikov 
1375e5b394f2SAlexander V. Chernikov 	if (sdl->sdl_family != AF_LINK)
1376e5b394f2SAlexander V. Chernikov 		return (EINVAL);
1377e5b394f2SAlexander V. Chernikov 
1378e5b394f2SAlexander V. Chernikov 	if (sdl->sdl_index == 0)
1379e5b394f2SAlexander V. Chernikov 		return (EINVAL);
1380e5b394f2SAlexander V. Chernikov 
1381e5b394f2SAlexander V. Chernikov 	if (offsetof(struct sockaddr_dl, sdl_data) + sdl->sdl_nlen + sdl->sdl_alen > sdl->sdl_len)
1382e5b394f2SAlexander V. Chernikov 		return (EINVAL);
1383e5b394f2SAlexander V. Chernikov 
1384e5b394f2SAlexander V. Chernikov 	return (0);
1385e5b394f2SAlexander V. Chernikov }
1386e5b394f2SAlexander V. Chernikov 
13872fe5a794SAlexander V. Chernikov static int
1388b31fbebeSAlexander V. Chernikov cleanup_xaddrs_gateway(struct rt_addrinfo *info, struct linear_buffer *lb)
13892fe5a794SAlexander V. Chernikov {
13902fe5a794SAlexander V. Chernikov 	struct sockaddr *gw = info->rti_info[RTAX_GATEWAY];
1391b31fbebeSAlexander V. Chernikov 	struct sockaddr *sa;
13922fe5a794SAlexander V. Chernikov 
1393e5b394f2SAlexander V. Chernikov 	if (info->rti_flags & RTF_LLDATA)
1394e5b394f2SAlexander V. Chernikov 		return (cleanup_xaddrs_lladdr(info));
1395e5b394f2SAlexander V. Chernikov 
13962fe5a794SAlexander V. Chernikov 	switch (gw->sa_family) {
13972fe5a794SAlexander V. Chernikov #ifdef INET
13982fe5a794SAlexander V. Chernikov 	case AF_INET:
13992fe5a794SAlexander V. Chernikov 		{
14002fe5a794SAlexander V. Chernikov 			struct sockaddr_in *gw_sin = (struct sockaddr_in *)gw;
1401b31fbebeSAlexander V. Chernikov 
1402b31fbebeSAlexander V. Chernikov 			/* Ensure reads do not go beyoud SA boundary */
1403b31fbebeSAlexander V. Chernikov 			if (SA_SIZE(gw) < offsetof(struct sockaddr_in, sin_zero)) {
1404758c9d54SAlexander V. Chernikov 				RTS_PID_PRINTF("gateway sin_len too small: %d", gw->sa_len);
14052fe5a794SAlexander V. Chernikov 				return (EINVAL);
14062fe5a794SAlexander V. Chernikov 			}
1407b31fbebeSAlexander V. Chernikov 			sa = alloc_sockaddr_aligned(lb, sizeof(struct sockaddr_in));
1408b31fbebeSAlexander V. Chernikov 			if (sa == NULL)
1409b31fbebeSAlexander V. Chernikov 				return (ENOBUFS);
1410b31fbebeSAlexander V. Chernikov 			fill_sockaddr_inet((struct sockaddr_in *)sa, gw_sin->sin_addr);
1411b31fbebeSAlexander V. Chernikov 			info->rti_info[RTAX_GATEWAY] = sa;
14122fe5a794SAlexander V. Chernikov 		}
14132fe5a794SAlexander V. Chernikov 		break;
14142fe5a794SAlexander V. Chernikov #endif
14152fe5a794SAlexander V. Chernikov #ifdef INET6
14162fe5a794SAlexander V. Chernikov 	case AF_INET6:
14172fe5a794SAlexander V. Chernikov 		{
14182fe5a794SAlexander V. Chernikov 			struct sockaddr_in6 *gw_sin6 = (struct sockaddr_in6 *)gw;
14192fe5a794SAlexander V. Chernikov 			if (gw_sin6->sin6_len < sizeof(struct sockaddr_in6)) {
1420758c9d54SAlexander V. Chernikov 				RTS_PID_PRINTF("gateway sin6_len too small: %d", gw->sa_len);
14212fe5a794SAlexander V. Chernikov 				return (EINVAL);
14222fe5a794SAlexander V. Chernikov 			}
14232fe5a794SAlexander V. Chernikov 			fill_sockaddr_inet6(gw_sin6, &gw_sin6->sin6_addr, 0);
14242fe5a794SAlexander V. Chernikov 			break;
14252fe5a794SAlexander V. Chernikov 		}
14262fe5a794SAlexander V. Chernikov #endif
14272fe5a794SAlexander V. Chernikov 	case AF_LINK:
14282fe5a794SAlexander V. Chernikov 		{
14297f5f3fccSAlexander V. Chernikov 			struct sockaddr_dl *gw_sdl;
14302fe5a794SAlexander V. Chernikov 
14317f5f3fccSAlexander V. Chernikov 			size_t sdl_min_len = offsetof(struct sockaddr_dl, sdl_data);
14327f5f3fccSAlexander V. Chernikov 			gw_sdl = (struct sockaddr_dl *)gw;
14337f5f3fccSAlexander V. Chernikov 			if (gw_sdl->sdl_len < sdl_min_len) {
1434758c9d54SAlexander V. Chernikov 				RTS_PID_PRINTF("gateway sdl_len too small: %d", gw_sdl->sdl_len);
14352fe5a794SAlexander V. Chernikov 				return (EINVAL);
14362fe5a794SAlexander V. Chernikov 			}
1437b31fbebeSAlexander V. Chernikov 			sa = alloc_sockaddr_aligned(lb, sizeof(struct sockaddr_dl_short));
1438b31fbebeSAlexander V. Chernikov 			if (sa == NULL)
1439b31fbebeSAlexander V. Chernikov 				return (ENOBUFS);
14402fe5a794SAlexander V. Chernikov 
14412fe5a794SAlexander V. Chernikov 			const struct sockaddr_dl_short sdl = {
14422fe5a794SAlexander V. Chernikov 				.sdl_family = AF_LINK,
1443b31fbebeSAlexander V. Chernikov 				.sdl_len = sizeof(struct sockaddr_dl_short),
14442fe5a794SAlexander V. Chernikov 				.sdl_index = gw_sdl->sdl_index,
14452fe5a794SAlexander V. Chernikov 			};
1446b31fbebeSAlexander V. Chernikov 			*((struct sockaddr_dl_short *)sa) = sdl;
1447b31fbebeSAlexander V. Chernikov 			info->rti_info[RTAX_GATEWAY] = sa;
14482fe5a794SAlexander V. Chernikov 			break;
14492fe5a794SAlexander V. Chernikov 		}
14502fe5a794SAlexander V. Chernikov 	}
14512fe5a794SAlexander V. Chernikov 
14522fe5a794SAlexander V. Chernikov 	return (0);
14532fe5a794SAlexander V. Chernikov }
1454a3c2c06bSBjoern A. Zeeb #endif
14552fe5a794SAlexander V. Chernikov 
1456f9e1cd6cSAlexander V. Chernikov static void
1457f9e1cd6cSAlexander V. Chernikov remove_netmask(struct rt_addrinfo *info)
1458f9e1cd6cSAlexander V. Chernikov {
1459f9e1cd6cSAlexander V. Chernikov 	info->rti_info[RTAX_NETMASK] = NULL;
1460f9e1cd6cSAlexander V. Chernikov 	info->rti_flags |= RTF_HOST;
1461f9e1cd6cSAlexander V. Chernikov 	info->rti_addrs &= ~RTA_NETMASK;
1462f9e1cd6cSAlexander V. Chernikov }
1463f9e1cd6cSAlexander V. Chernikov 
1464a4513bacSAlexander V. Chernikov #ifdef INET
14652fe5a794SAlexander V. Chernikov static int
1466b31fbebeSAlexander V. Chernikov cleanup_xaddrs_inet(struct rt_addrinfo *info, struct linear_buffer *lb)
14672fe5a794SAlexander V. Chernikov {
14682fe5a794SAlexander V. Chernikov 	struct sockaddr_in *dst_sa, *mask_sa;
1469b31fbebeSAlexander V. Chernikov 	const int sa_len = sizeof(struct sockaddr_in);
1470b31fbebeSAlexander V. Chernikov 	struct in_addr dst, mask;
14712fe5a794SAlexander V. Chernikov 
14722fe5a794SAlexander V. Chernikov 	/* Check & fixup dst/netmask combination first */
14732fe5a794SAlexander V. Chernikov 	dst_sa = (struct sockaddr_in *)info->rti_info[RTAX_DST];
14742fe5a794SAlexander V. Chernikov 	mask_sa = (struct sockaddr_in *)info->rti_info[RTAX_NETMASK];
14752fe5a794SAlexander V. Chernikov 
1476b31fbebeSAlexander V. Chernikov 	/* Ensure reads do not go beyound the buffer size */
1477b31fbebeSAlexander V. Chernikov 	if (SA_SIZE(dst_sa) < offsetof(struct sockaddr_in, sin_zero))
14782fe5a794SAlexander V. Chernikov 		return (EINVAL);
1479b31fbebeSAlexander V. Chernikov 
1480b31fbebeSAlexander V. Chernikov 	if ((mask_sa != NULL) && mask_sa->sin_len < sizeof(struct sockaddr_in)) {
1481b31fbebeSAlexander V. Chernikov 		/*
1482b31fbebeSAlexander V. Chernikov 		 * Some older routing software encode mask length into the
1483b31fbebeSAlexander V. Chernikov 		 * sin_len, thus resulting in "truncated" sockaddr.
1484b31fbebeSAlexander V. Chernikov 		 */
1485b31fbebeSAlexander V. Chernikov 		int len = mask_sa->sin_len - offsetof(struct sockaddr_in, sin_addr);
1486b31fbebeSAlexander V. Chernikov 		if (len >= 0) {
1487b31fbebeSAlexander V. Chernikov 			mask.s_addr = 0;
1488b31fbebeSAlexander V. Chernikov 			if (len > sizeof(struct in_addr))
1489b31fbebeSAlexander V. Chernikov 				len = sizeof(struct in_addr);
1490b31fbebeSAlexander V. Chernikov 			memcpy(&mask, &mask_sa->sin_addr, len);
1491b31fbebeSAlexander V. Chernikov 		} else {
1492758c9d54SAlexander V. Chernikov 			RTS_PID_PRINTF("prefix mask sin_len too small: %d", mask_sa->sin_len);
14932fe5a794SAlexander V. Chernikov 			return (EINVAL);
14942fe5a794SAlexander V. Chernikov 		}
1495b31fbebeSAlexander V. Chernikov 	} else
1496b31fbebeSAlexander V. Chernikov 		mask.s_addr = mask_sa ? mask_sa->sin_addr.s_addr : INADDR_BROADCAST;
14972fe5a794SAlexander V. Chernikov 
1498b31fbebeSAlexander V. Chernikov 	dst.s_addr = htonl(ntohl(dst_sa->sin_addr.s_addr) & ntohl(mask.s_addr));
1499b31fbebeSAlexander V. Chernikov 
1500b31fbebeSAlexander V. Chernikov 	/* Construct new "clean" dst/mask sockaddresses */
1501b31fbebeSAlexander V. Chernikov 	if ((dst_sa = (struct sockaddr_in *)alloc_sockaddr_aligned(lb, sa_len)) == NULL)
1502b31fbebeSAlexander V. Chernikov 		return (ENOBUFS);
1503b31fbebeSAlexander V. Chernikov 	fill_sockaddr_inet(dst_sa, dst);
1504b31fbebeSAlexander V. Chernikov 	info->rti_info[RTAX_DST] = (struct sockaddr *)dst_sa;
1505b31fbebeSAlexander V. Chernikov 
1506b31fbebeSAlexander V. Chernikov 	if (mask.s_addr != INADDR_BROADCAST) {
1507b31fbebeSAlexander V. Chernikov 		if ((mask_sa = (struct sockaddr_in *)alloc_sockaddr_aligned(lb, sa_len)) == NULL)
1508b31fbebeSAlexander V. Chernikov 			return (ENOBUFS);
15092fe5a794SAlexander V. Chernikov 		fill_sockaddr_inet(mask_sa, mask);
1510b31fbebeSAlexander V. Chernikov 		info->rti_info[RTAX_NETMASK] = (struct sockaddr *)mask_sa;
15115d1403a7SAlexander V. Chernikov 		info->rti_flags &= ~RTF_HOST;
1512b31fbebeSAlexander V. Chernikov 	} else
1513f9e1cd6cSAlexander V. Chernikov 		remove_netmask(info);
15142fe5a794SAlexander V. Chernikov 
15152fe5a794SAlexander V. Chernikov 	/* Check gateway */
15162fe5a794SAlexander V. Chernikov 	if (info->rti_info[RTAX_GATEWAY] != NULL)
1517b31fbebeSAlexander V. Chernikov 		return (cleanup_xaddrs_gateway(info, lb));
15182fe5a794SAlexander V. Chernikov 
15192fe5a794SAlexander V. Chernikov 	return (0);
15202fe5a794SAlexander V. Chernikov }
1521a4513bacSAlexander V. Chernikov #endif
15222fe5a794SAlexander V. Chernikov 
1523a4513bacSAlexander V. Chernikov #ifdef INET6
15242fe5a794SAlexander V. Chernikov static int
1525b31fbebeSAlexander V. Chernikov cleanup_xaddrs_inet6(struct rt_addrinfo *info, struct linear_buffer *lb)
15262fe5a794SAlexander V. Chernikov {
1527b31fbebeSAlexander V. Chernikov 	struct sockaddr *sa;
15282fe5a794SAlexander V. Chernikov 	struct sockaddr_in6 *dst_sa, *mask_sa;
1529b31fbebeSAlexander V. Chernikov 	struct in6_addr mask, *dst;
1530b31fbebeSAlexander V. Chernikov 	const int sa_len = sizeof(struct sockaddr_in6);
15312fe5a794SAlexander V. Chernikov 
15322fe5a794SAlexander V. Chernikov 	/* Check & fixup dst/netmask combination first */
15332fe5a794SAlexander V. Chernikov 	dst_sa = (struct sockaddr_in6 *)info->rti_info[RTAX_DST];
15342fe5a794SAlexander V. Chernikov 	mask_sa = (struct sockaddr_in6 *)info->rti_info[RTAX_NETMASK];
15352fe5a794SAlexander V. Chernikov 
15362fe5a794SAlexander V. Chernikov 	if (dst_sa->sin6_len < sizeof(struct sockaddr_in6)) {
1537758c9d54SAlexander V. Chernikov 		RTS_PID_PRINTF("prefix dst sin6_len too small: %d", dst_sa->sin6_len);
15382fe5a794SAlexander V. Chernikov 		return (EINVAL);
15392fe5a794SAlexander V. Chernikov 	}
1540b31fbebeSAlexander V. Chernikov 
15412fe5a794SAlexander V. Chernikov 	if (mask_sa && mask_sa->sin6_len < sizeof(struct sockaddr_in6)) {
1542b31fbebeSAlexander V. Chernikov 		/*
1543b31fbebeSAlexander V. Chernikov 		 * Some older routing software encode mask length into the
1544b31fbebeSAlexander V. Chernikov 		 * sin6_len, thus resulting in "truncated" sockaddr.
1545b31fbebeSAlexander V. Chernikov 		 */
1546b31fbebeSAlexander V. Chernikov 		int len = mask_sa->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1547b31fbebeSAlexander V. Chernikov 		if (len >= 0) {
1548b31fbebeSAlexander V. Chernikov 			bzero(&mask, sizeof(mask));
1549b31fbebeSAlexander V. Chernikov 			if (len > sizeof(struct in6_addr))
1550b31fbebeSAlexander V. Chernikov 				len = sizeof(struct in6_addr);
1551b31fbebeSAlexander V. Chernikov 			memcpy(&mask, &mask_sa->sin6_addr, len);
1552b31fbebeSAlexander V. Chernikov 		} else {
1553758c9d54SAlexander V. Chernikov 			RTS_PID_PRINTF("rtsock: prefix mask sin6_len too small: %d", mask_sa->sin6_len);
15542fe5a794SAlexander V. Chernikov 			return (EINVAL);
15552fe5a794SAlexander V. Chernikov 		}
1556b31fbebeSAlexander V. Chernikov 	} else
1557b31fbebeSAlexander V. Chernikov 		mask = mask_sa ? mask_sa->sin6_addr : in6mask128;
15582fe5a794SAlexander V. Chernikov 
1559b31fbebeSAlexander V. Chernikov 	dst = &dst_sa->sin6_addr;
1560b31fbebeSAlexander V. Chernikov 	IN6_MASK_ADDR(dst, &mask);
1561b31fbebeSAlexander V. Chernikov 
1562b31fbebeSAlexander V. Chernikov 	if ((sa = alloc_sockaddr_aligned(lb, sa_len)) == NULL)
1563b31fbebeSAlexander V. Chernikov 		return (ENOBUFS);
1564b31fbebeSAlexander V. Chernikov 	fill_sockaddr_inet6((struct sockaddr_in6 *)sa, dst, 0);
1565b31fbebeSAlexander V. Chernikov 	info->rti_info[RTAX_DST] = sa;
1566b31fbebeSAlexander V. Chernikov 
1567b31fbebeSAlexander V. Chernikov 	if (!IN6_ARE_ADDR_EQUAL(&mask, &in6mask128)) {
1568b31fbebeSAlexander V. Chernikov 		if ((sa = alloc_sockaddr_aligned(lb, sa_len)) == NULL)
1569b31fbebeSAlexander V. Chernikov 			return (ENOBUFS);
1570b31fbebeSAlexander V. Chernikov 		fill_sockaddr_inet6((struct sockaddr_in6 *)sa, &mask, 0);
1571b31fbebeSAlexander V. Chernikov 		info->rti_info[RTAX_NETMASK] = sa;
15725d1403a7SAlexander V. Chernikov 		info->rti_flags &= ~RTF_HOST;
1573b31fbebeSAlexander V. Chernikov 	} else
1574f9e1cd6cSAlexander V. Chernikov 		remove_netmask(info);
15752fe5a794SAlexander V. Chernikov 
15762fe5a794SAlexander V. Chernikov 	/* Check gateway */
15772fe5a794SAlexander V. Chernikov 	if (info->rti_info[RTAX_GATEWAY] != NULL)
1578b31fbebeSAlexander V. Chernikov 		return (cleanup_xaddrs_gateway(info, lb));
15792fe5a794SAlexander V. Chernikov 
15802fe5a794SAlexander V. Chernikov 	return (0);
15812fe5a794SAlexander V. Chernikov }
1582a4513bacSAlexander V. Chernikov #endif
15832fe5a794SAlexander V. Chernikov 
15842fe5a794SAlexander V. Chernikov static int
1585b31fbebeSAlexander V. Chernikov cleanup_xaddrs(struct rt_addrinfo *info, struct linear_buffer *lb)
15862fe5a794SAlexander V. Chernikov {
15872fe5a794SAlexander V. Chernikov 	int error = EAFNOSUPPORT;
15882fe5a794SAlexander V. Chernikov 
15892fe5a794SAlexander V. Chernikov 	if (info->rti_info[RTAX_DST] == NULL)
15902fe5a794SAlexander V. Chernikov 		return (EINVAL);
15912fe5a794SAlexander V. Chernikov 
1592f9e1cd6cSAlexander V. Chernikov 	if (info->rti_flags & RTF_LLDATA) {
1593f9e1cd6cSAlexander V. Chernikov 		/*
1594f9e1cd6cSAlexander V. Chernikov 		 * arp(8)/ndp(8) sends RTA_NETMASK for the associated
1595f9e1cd6cSAlexander V. Chernikov 		 * prefix along with the actual address in RTA_DST.
1596f9e1cd6cSAlexander V. Chernikov 		 * Remove netmask to avoid unnecessary address masking.
1597f9e1cd6cSAlexander V. Chernikov 		 */
1598f9e1cd6cSAlexander V. Chernikov 		remove_netmask(info);
1599f9e1cd6cSAlexander V. Chernikov 	}
1600f9e1cd6cSAlexander V. Chernikov 
16012fe5a794SAlexander V. Chernikov 	switch (info->rti_info[RTAX_DST]->sa_family) {
16022fe5a794SAlexander V. Chernikov #ifdef INET
16032fe5a794SAlexander V. Chernikov 	case AF_INET:
1604b31fbebeSAlexander V. Chernikov 		error = cleanup_xaddrs_inet(info, lb);
16052fe5a794SAlexander V. Chernikov 		break;
16062fe5a794SAlexander V. Chernikov #endif
16072fe5a794SAlexander V. Chernikov #ifdef INET6
16082fe5a794SAlexander V. Chernikov 	case AF_INET6:
1609b31fbebeSAlexander V. Chernikov 		error = cleanup_xaddrs_inet6(info, lb);
16102fe5a794SAlexander V. Chernikov 		break;
16112fe5a794SAlexander V. Chernikov #endif
16122fe5a794SAlexander V. Chernikov 	}
16132fe5a794SAlexander V. Chernikov 
16142fe5a794SAlexander V. Chernikov 	return (error);
16152fe5a794SAlexander V. Chernikov }
16162fe5a794SAlexander V. Chernikov 
16176d076ae8SBjoern A. Zeeb /*
16183deb3649SAlexander V. Chernikov  * Fill in @dmask with valid netmask leaving original @smask
16193deb3649SAlexander V. Chernikov  * intact. Mostly used with radix netmasks.
16203deb3649SAlexander V. Chernikov  */
1621fc88ecd3SAlexander V. Chernikov struct sockaddr *
1622fc88ecd3SAlexander V. Chernikov rtsock_fix_netmask(const struct sockaddr *dst, const struct sockaddr *smask,
16233deb3649SAlexander V. Chernikov     struct sockaddr_storage *dmask)
16243deb3649SAlexander V. Chernikov {
16253deb3649SAlexander V. Chernikov 	if (dst == NULL || smask == NULL)
16263deb3649SAlexander V. Chernikov 		return (NULL);
16273deb3649SAlexander V. Chernikov 
16283deb3649SAlexander V. Chernikov 	memset(dmask, 0, dst->sa_len);
16293deb3649SAlexander V. Chernikov 	memcpy(dmask, smask, smask->sa_len);
16303deb3649SAlexander V. Chernikov 	dmask->ss_len = dst->sa_len;
16313deb3649SAlexander V. Chernikov 	dmask->ss_family = dst->sa_family;
16323deb3649SAlexander V. Chernikov 
16333deb3649SAlexander V. Chernikov 	return ((struct sockaddr *)dmask);
16343deb3649SAlexander V. Chernikov }
16353deb3649SAlexander V. Chernikov 
16363deb3649SAlexander V. Chernikov /*
16376db47af4SAlexander V. Chernikov  * Writes information related to @rtinfo object to newly-allocated mbuf.
16386db47af4SAlexander V. Chernikov  * Assumes MCLBYTES is enough to construct any message.
16396db47af4SAlexander V. Chernikov  * Used for OS notifications of vaious events (if/ifa announces,etc)
16406db47af4SAlexander V. Chernikov  *
16416db47af4SAlexander V. Chernikov  * Returns allocated mbuf or NULL on failure.
16426d076ae8SBjoern A. Zeeb  */
1643df8bae1dSRodney W. Grimes static struct mbuf *
16446db47af4SAlexander V. Chernikov rtsock_msg_mbuf(int type, struct rt_addrinfo *rtinfo)
1645df8bae1dSRodney W. Grimes {
164692be2847SMark Johnston 	struct sockaddr_storage ss;
16475dfc91d7SLuigi Rizzo 	struct rt_msghdr *rtm;
16485dfc91d7SLuigi Rizzo 	struct mbuf *m;
16495dfc91d7SLuigi Rizzo 	int i;
16505dfc91d7SLuigi Rizzo 	struct sockaddr *sa;
16516bbfef90SHiroki Sato #ifdef INET6
16526bbfef90SHiroki Sato 	struct sockaddr_in6 *sin6;
16536bbfef90SHiroki Sato #endif
1654df8bae1dSRodney W. Grimes 	int len, dlen;
1655df8bae1dSRodney W. Grimes 
1656df8bae1dSRodney W. Grimes 	switch (type) {
1657df8bae1dSRodney W. Grimes 	case RTM_DELADDR:
1658df8bae1dSRodney W. Grimes 	case RTM_NEWADDR:
1659df8bae1dSRodney W. Grimes 		len = sizeof(struct ifa_msghdr);
1660df8bae1dSRodney W. Grimes 		break;
1661df8bae1dSRodney W. Grimes 
1662477180fbSGarrett Wollman 	case RTM_DELMADDR:
1663477180fbSGarrett Wollman 	case RTM_NEWMADDR:
1664477180fbSGarrett Wollman 		len = sizeof(struct ifma_msghdr);
1665477180fbSGarrett Wollman 		break;
1666477180fbSGarrett Wollman 
1667df8bae1dSRodney W. Grimes 	case RTM_IFINFO:
1668df8bae1dSRodney W. Grimes 		len = sizeof(struct if_msghdr);
1669df8bae1dSRodney W. Grimes 		break;
1670df8bae1dSRodney W. Grimes 
16717b6edd04SRuslan Ermilov 	case RTM_IFANNOUNCE:
1672b83a279fSSam Leffler 	case RTM_IEEE80211:
16737b6edd04SRuslan Ermilov 		len = sizeof(struct if_announcemsghdr);
16747b6edd04SRuslan Ermilov 		break;
16757b6edd04SRuslan Ermilov 
1676df8bae1dSRodney W. Grimes 	default:
1677df8bae1dSRodney W. Grimes 		len = sizeof(struct rt_msghdr);
1678df8bae1dSRodney W. Grimes 	}
1679c69f77c3SGleb Smirnoff 
1680c69f77c3SGleb Smirnoff 	/* XXXGL: can we use MJUMPAGESIZE cluster here? */
1681c69f77c3SGleb Smirnoff 	KASSERT(len <= MCLBYTES, ("%s: message too big", __func__));
1682c69f77c3SGleb Smirnoff 	if (len > MHLEN)
1683c69f77c3SGleb Smirnoff 		m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1684c69f77c3SGleb Smirnoff 	else
1685eb1b1807SGleb Smirnoff 		m = m_gethdr(M_NOWAIT, MT_DATA);
16865dfc91d7SLuigi Rizzo 	if (m == NULL)
168733841545SHajimu UMEMOTO 		return (m);
1688c69f77c3SGleb Smirnoff 
1689df8bae1dSRodney W. Grimes 	m->m_pkthdr.len = m->m_len = len;
1690df8bae1dSRodney W. Grimes 	rtm = mtod(m, struct rt_msghdr *);
1691df8bae1dSRodney W. Grimes 	bzero((caddr_t)rtm, len);
1692df8bae1dSRodney W. Grimes 	for (i = 0; i < RTAX_MAX; i++) {
1693df8bae1dSRodney W. Grimes 		if ((sa = rtinfo->rti_info[i]) == NULL)
1694df8bae1dSRodney W. Grimes 			continue;
1695df8bae1dSRodney W. Grimes 		rtinfo->rti_addrs |= (1 << i);
169692be2847SMark Johnston 
1697e74642dfSLuigi Rizzo 		dlen = SA_SIZE(sa);
169892be2847SMark Johnston 		KASSERT(dlen <= sizeof(ss),
169992be2847SMark Johnston 		    ("%s: sockaddr size overflow", __func__));
170092be2847SMark Johnston 		bzero(&ss, sizeof(ss));
170192be2847SMark Johnston 		bcopy(sa, &ss, sa->sa_len);
170292be2847SMark Johnston 		sa = (struct sockaddr *)&ss;
17036bbfef90SHiroki Sato #ifdef INET6
1704bec053ffSAlexander V. Chernikov 		if (sa->sa_family == AF_INET6) {
170592be2847SMark Johnston 			sin6 = (struct sockaddr_in6 *)sa;
170692be2847SMark Johnston 			(void)sa6_recoverscope(sin6);
17076bbfef90SHiroki Sato 		}
17086bbfef90SHiroki Sato #endif
1709df8bae1dSRodney W. Grimes 		m_copyback(m, len, dlen, (caddr_t)sa);
1710df8bae1dSRodney W. Grimes 		len += dlen;
1711df8bae1dSRodney W. Grimes 	}
1712df8bae1dSRodney W. Grimes 	if (m->m_pkthdr.len != len) {
1713df8bae1dSRodney W. Grimes 		m_freem(m);
1714df8bae1dSRodney W. Grimes 		return (NULL);
1715df8bae1dSRodney W. Grimes 	}
1716df8bae1dSRodney W. Grimes 	rtm->rtm_msglen = len;
1717df8bae1dSRodney W. Grimes 	rtm->rtm_version = RTM_VERSION;
1718df8bae1dSRodney W. Grimes 	rtm->rtm_type = type;
1719df8bae1dSRodney W. Grimes 	return (m);
1720df8bae1dSRodney W. Grimes }
1721df8bae1dSRodney W. Grimes 
17226d076ae8SBjoern A. Zeeb /*
1723f2e5eb36SAlexander V. Chernikov  * Writes information related to @rtinfo object to preallocated buffer.
1724f2e5eb36SAlexander V. Chernikov  * Stores needed size in @plen. If @w is NULL, calculates size without
1725f2e5eb36SAlexander V. Chernikov  * writing.
1726f2e5eb36SAlexander V. Chernikov  * Used for sysctl dumps and rtsock answers (RTM_DEL/RTM_GET) generation.
1727f2e5eb36SAlexander V. Chernikov  *
1728f2e5eb36SAlexander V. Chernikov  * Returns 0 on success.
1729f2e5eb36SAlexander V. Chernikov  *
17306d076ae8SBjoern A. Zeeb  */
1731df8bae1dSRodney W. Grimes static int
1732f2e5eb36SAlexander V. Chernikov rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo, struct walkarg *w, int *plen)
1733df8bae1dSRodney W. Grimes {
173492be2847SMark Johnston 	struct sockaddr_storage ss;
173592be2847SMark Johnston 	int len, buflen = 0, dlen, i;
1736de46b2c6SAlexander V. Chernikov 	caddr_t cp = NULL;
1737f2e5eb36SAlexander V. Chernikov 	struct rt_msghdr *rtm = NULL;
17386bbfef90SHiroki Sato #ifdef INET6
17396bbfef90SHiroki Sato 	struct sockaddr_in6 *sin6;
17406bbfef90SHiroki Sato #endif
1741279e33d4SKonstantin Belousov #ifdef COMPAT_FREEBSD32
1742279e33d4SKonstantin Belousov 	bool compat32 = false;
1743279e33d4SKonstantin Belousov #endif
1744df8bae1dSRodney W. Grimes 
1745df8bae1dSRodney W. Grimes 	switch (type) {
1746df8bae1dSRodney W. Grimes 	case RTM_DELADDR:
1747df8bae1dSRodney W. Grimes 	case RTM_NEWADDR:
17486d076ae8SBjoern A. Zeeb 		if (w != NULL && w->w_op == NET_RT_IFLISTL) {
17496d076ae8SBjoern A. Zeeb #ifdef COMPAT_FREEBSD32
1750279e33d4SKonstantin Belousov 			if (w->w_req->flags & SCTL_MASK32) {
17516d076ae8SBjoern A. Zeeb 				len = sizeof(struct ifa_msghdrl32);
1752279e33d4SKonstantin Belousov 				compat32 = true;
1753279e33d4SKonstantin Belousov 			} else
17546d076ae8SBjoern A. Zeeb #endif
17556d076ae8SBjoern A. Zeeb 				len = sizeof(struct ifa_msghdrl);
17566d076ae8SBjoern A. Zeeb 		} else
1757df8bae1dSRodney W. Grimes 			len = sizeof(struct ifa_msghdr);
1758df8bae1dSRodney W. Grimes 		break;
1759df8bae1dSRodney W. Grimes 
1760df8bae1dSRodney W. Grimes 	case RTM_IFINFO:
1761427a928aSKonstantin Belousov #ifdef COMPAT_FREEBSD32
1762427a928aSKonstantin Belousov 		if (w != NULL && w->w_req->flags & SCTL_MASK32) {
17636d076ae8SBjoern A. Zeeb 			if (w->w_op == NET_RT_IFLISTL)
17646d076ae8SBjoern A. Zeeb 				len = sizeof(struct if_msghdrl32);
17656d076ae8SBjoern A. Zeeb 			else
1766427a928aSKonstantin Belousov 				len = sizeof(struct if_msghdr32);
1767279e33d4SKonstantin Belousov 			compat32 = true;
1768427a928aSKonstantin Belousov 			break;
1769427a928aSKonstantin Belousov 		}
1770427a928aSKonstantin Belousov #endif
17716d076ae8SBjoern A. Zeeb 		if (w != NULL && w->w_op == NET_RT_IFLISTL)
17726d076ae8SBjoern A. Zeeb 			len = sizeof(struct if_msghdrl);
17736d076ae8SBjoern A. Zeeb 		else
1774df8bae1dSRodney W. Grimes 			len = sizeof(struct if_msghdr);
1775df8bae1dSRodney W. Grimes 		break;
1776df8bae1dSRodney W. Grimes 
177705b2efe0SBruce M Simpson 	case RTM_NEWMADDR:
177805b2efe0SBruce M Simpson 		len = sizeof(struct ifma_msghdr);
177905b2efe0SBruce M Simpson 		break;
178005b2efe0SBruce M Simpson 
1781df8bae1dSRodney W. Grimes 	default:
1782df8bae1dSRodney W. Grimes 		len = sizeof(struct rt_msghdr);
1783df8bae1dSRodney W. Grimes 	}
1784f2e5eb36SAlexander V. Chernikov 
1785f2e5eb36SAlexander V. Chernikov 	if (w != NULL) {
1786f2e5eb36SAlexander V. Chernikov 		rtm = (struct rt_msghdr *)w->w_tmem;
1787f2e5eb36SAlexander V. Chernikov 		buflen = w->w_tmemsize - len;
1788f2e5eb36SAlexander V. Chernikov 		cp = (caddr_t)w->w_tmem + len;
1789f2e5eb36SAlexander V. Chernikov 	}
1790f2e5eb36SAlexander V. Chernikov 
1791f2e5eb36SAlexander V. Chernikov 	rtinfo->rti_addrs = 0;
1792df8bae1dSRodney W. Grimes 	for (i = 0; i < RTAX_MAX; i++) {
17935dfc91d7SLuigi Rizzo 		struct sockaddr *sa;
1794df8bae1dSRodney W. Grimes 
17955dfc91d7SLuigi Rizzo 		if ((sa = rtinfo->rti_info[i]) == NULL)
1796df8bae1dSRodney W. Grimes 			continue;
1797df8bae1dSRodney W. Grimes 		rtinfo->rti_addrs |= (1 << i);
1798279e33d4SKonstantin Belousov #ifdef COMPAT_FREEBSD32
1799279e33d4SKonstantin Belousov 		if (compat32)
1800279e33d4SKonstantin Belousov 			dlen = SA_SIZE32(sa);
1801279e33d4SKonstantin Belousov 		else
1802279e33d4SKonstantin Belousov #endif
1803e74642dfSLuigi Rizzo 			dlen = SA_SIZE(sa);
1804f2e5eb36SAlexander V. Chernikov 		if (cp != NULL && buflen >= dlen) {
180592be2847SMark Johnston 			KASSERT(dlen <= sizeof(ss),
180692be2847SMark Johnston 			    ("%s: sockaddr size overflow", __func__));
180792be2847SMark Johnston 			bzero(&ss, sizeof(ss));
180892be2847SMark Johnston 			bcopy(sa, &ss, sa->sa_len);
180992be2847SMark Johnston 			sa = (struct sockaddr *)&ss;
18106bbfef90SHiroki Sato #ifdef INET6
1811bec053ffSAlexander V. Chernikov 			if (sa->sa_family == AF_INET6) {
181292be2847SMark Johnston 				sin6 = (struct sockaddr_in6 *)sa;
181392be2847SMark Johnston 				(void)sa6_recoverscope(sin6);
18146bbfef90SHiroki Sato 			}
18156bbfef90SHiroki Sato #endif
1816df8bae1dSRodney W. Grimes 			bcopy((caddr_t)sa, cp, (unsigned)dlen);
1817df8bae1dSRodney W. Grimes 			cp += dlen;
1818f2e5eb36SAlexander V. Chernikov 			buflen -= dlen;
1819f2e5eb36SAlexander V. Chernikov 		} else if (cp != NULL) {
1820f2e5eb36SAlexander V. Chernikov 			/*
1821f2e5eb36SAlexander V. Chernikov 			 * Buffer too small. Count needed size
1822f2e5eb36SAlexander V. Chernikov 			 * and return with error.
1823f2e5eb36SAlexander V. Chernikov 			 */
1824f2e5eb36SAlexander V. Chernikov 			cp = NULL;
1825df8bae1dSRodney W. Grimes 		}
1826f2e5eb36SAlexander V. Chernikov 
1827df8bae1dSRodney W. Grimes 		len += dlen;
1828df8bae1dSRodney W. Grimes 	}
1829f2e5eb36SAlexander V. Chernikov 
1830f2e5eb36SAlexander V. Chernikov 	if (cp != NULL) {
1831f2e5eb36SAlexander V. Chernikov 		dlen = ALIGN(len) - len;
1832f2e5eb36SAlexander V. Chernikov 		if (buflen < dlen)
1833f2e5eb36SAlexander V. Chernikov 			cp = NULL;
1834d25f8522SMark Johnston 		else {
1835d25f8522SMark Johnston 			bzero(cp, dlen);
1836d25f8522SMark Johnston 			cp += dlen;
1837f2e5eb36SAlexander V. Chernikov 			buflen -= dlen;
1838f2e5eb36SAlexander V. Chernikov 		}
1839d25f8522SMark Johnston 	}
1840694ff264SAndrew Gallatin 	len = ALIGN(len);
1841df8bae1dSRodney W. Grimes 
1842f2e5eb36SAlexander V. Chernikov 	if (cp != NULL) {
1843f2e5eb36SAlexander V. Chernikov 		/* fill header iff buffer is large enough */
1844df8bae1dSRodney W. Grimes 		rtm->rtm_version = RTM_VERSION;
1845df8bae1dSRodney W. Grimes 		rtm->rtm_type = type;
1846df8bae1dSRodney W. Grimes 		rtm->rtm_msglen = len;
1847df8bae1dSRodney W. Grimes 	}
1848f2e5eb36SAlexander V. Chernikov 
1849f2e5eb36SAlexander V. Chernikov 	*plen = len;
1850f2e5eb36SAlexander V. Chernikov 
1851f2e5eb36SAlexander V. Chernikov 	if (w != NULL && cp == NULL)
1852f2e5eb36SAlexander V. Chernikov 		return (ENOBUFS);
1853f2e5eb36SAlexander V. Chernikov 
1854f2e5eb36SAlexander V. Chernikov 	return (0);
1855df8bae1dSRodney W. Grimes }
1856df8bae1dSRodney W. Grimes 
1857df8bae1dSRodney W. Grimes /*
1858df8bae1dSRodney W. Grimes  * This routine is called to generate a message from the routing
1859a4641f4eSPedro F. Giffuni  * socket indicating that a redirect has occurred, a routing lookup
1860df8bae1dSRodney W. Grimes  * has failed, or that a protocol has detected timeouts to a particular
1861df8bae1dSRodney W. Grimes  * destination.
1862df8bae1dSRodney W. Grimes  */
1863df8bae1dSRodney W. Grimes void
1864528737fdSBjoern A. Zeeb rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error,
1865528737fdSBjoern A. Zeeb     int fibnum)
1866df8bae1dSRodney W. Grimes {
1867becc44d7SSam Leffler 	struct rt_msghdr *rtm;
1868becc44d7SSam Leffler 	struct mbuf *m;
1869df8bae1dSRodney W. Grimes 	struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
1870df8bae1dSRodney W. Grimes 
1871c5d4eab6SMarko Zec 	if (V_route_cb.any_count == 0)
1872df8bae1dSRodney W. Grimes 		return;
18736db47af4SAlexander V. Chernikov 	m = rtsock_msg_mbuf(type, rtinfo);
18745dfc91d7SLuigi Rizzo 	if (m == NULL)
1875df8bae1dSRodney W. Grimes 		return;
1876528737fdSBjoern A. Zeeb 
18777d9b6df1SAlexander V. Chernikov 	if (fibnum != RT_ALL_FIBS) {
1878528737fdSBjoern A. Zeeb 		KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out "
1879528737fdSBjoern A. Zeeb 		    "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs));
1880528737fdSBjoern A. Zeeb 		M_SETFIB(m, fibnum);
1881528737fdSBjoern A. Zeeb 		m->m_flags |= RTS_FILTER_FIB;
1882528737fdSBjoern A. Zeeb 	}
1883528737fdSBjoern A. Zeeb 
1884df8bae1dSRodney W. Grimes 	rtm = mtod(m, struct rt_msghdr *);
1885df8bae1dSRodney W. Grimes 	rtm->rtm_flags = RTF_DONE | flags;
1886df8bae1dSRodney W. Grimes 	rtm->rtm_errno = error;
1887df8bae1dSRodney W. Grimes 	rtm->rtm_addrs = rtinfo->rti_addrs;
18883ca1a2d6SMax Laier 	rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC);
1889df8bae1dSRodney W. Grimes }
1890df8bae1dSRodney W. Grimes 
1891528737fdSBjoern A. Zeeb void
1892528737fdSBjoern A. Zeeb rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
1893528737fdSBjoern A. Zeeb {
1894528737fdSBjoern A. Zeeb 
18957d9b6df1SAlexander V. Chernikov 	rt_missmsg_fib(type, rtinfo, flags, error, RT_ALL_FIBS);
1896528737fdSBjoern A. Zeeb }
1897528737fdSBjoern A. Zeeb 
1898df8bae1dSRodney W. Grimes /*
1899df8bae1dSRodney W. Grimes  * This routine is called to generate a message from the routing
1900df8bae1dSRodney W. Grimes  * socket indicating that the status of a network interface has changed.
1901df8bae1dSRodney W. Grimes  */
1902df8bae1dSRodney W. Grimes void
1903becc44d7SSam Leffler rt_ifmsg(struct ifnet *ifp)
1904df8bae1dSRodney W. Grimes {
1905becc44d7SSam Leffler 	struct if_msghdr *ifm;
1906df8bae1dSRodney W. Grimes 	struct mbuf *m;
1907df8bae1dSRodney W. Grimes 	struct rt_addrinfo info;
1908df8bae1dSRodney W. Grimes 
1909c5d4eab6SMarko Zec 	if (V_route_cb.any_count == 0)
1910df8bae1dSRodney W. Grimes 		return;
1911df8bae1dSRodney W. Grimes 	bzero((caddr_t)&info, sizeof(info));
19126db47af4SAlexander V. Chernikov 	m = rtsock_msg_mbuf(RTM_IFINFO, &info);
19135dfc91d7SLuigi Rizzo 	if (m == NULL)
1914df8bae1dSRodney W. Grimes 		return;
1915df8bae1dSRodney W. Grimes 	ifm = mtod(m, struct if_msghdr *);
1916df8bae1dSRodney W. Grimes 	ifm->ifm_index = ifp->if_index;
1917292ee7beSRobert Watson 	ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
1918e6485f73SGleb Smirnoff 	if_data_copy(ifp, &ifm->ifm_data);
1919df8bae1dSRodney W. Grimes 	ifm->ifm_addrs = 0;
19203ca1a2d6SMax Laier 	rt_dispatch(m, AF_UNSPEC);
1921df8bae1dSRodney W. Grimes }
1922df8bae1dSRodney W. Grimes 
1923df8bae1dSRodney W. Grimes /*
19244cbac30bSAlexander V. Chernikov  * Announce interface address arrival/withdraw.
19254cbac30bSAlexander V. Chernikov  * Please do not call directly, use rt_addrmsg().
19264cbac30bSAlexander V. Chernikov  * Assume input data to be valid.
19274cbac30bSAlexander V. Chernikov  * Returns 0 on success.
1928df8bae1dSRodney W. Grimes  */
19294cbac30bSAlexander V. Chernikov int
19304cbac30bSAlexander V. Chernikov rtsock_addrmsg(int cmd, struct ifaddr *ifa, int fibnum)
1931df8bae1dSRodney W. Grimes {
1932df8bae1dSRodney W. Grimes 	struct rt_addrinfo info;
19334cbac30bSAlexander V. Chernikov 	struct sockaddr *sa;
19344cbac30bSAlexander V. Chernikov 	int ncmd;
19354cbac30bSAlexander V. Chernikov 	struct mbuf *m;
19364cbac30bSAlexander V. Chernikov 	struct ifa_msghdr *ifam;
1937df8bae1dSRodney W. Grimes 	struct ifnet *ifp = ifa->ifa_ifp;
19383deb3649SAlexander V. Chernikov 	struct sockaddr_storage ss;
1939df8bae1dSRodney W. Grimes 
1940c5d4eab6SMarko Zec 	if (V_route_cb.any_count == 0)
19414cbac30bSAlexander V. Chernikov 		return (0);
1942df8bae1dSRodney W. Grimes 
19434cbac30bSAlexander V. Chernikov 	ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
19444cbac30bSAlexander V. Chernikov 
19454cbac30bSAlexander V. Chernikov 	bzero((caddr_t)&info, sizeof(info));
1946becc44d7SSam Leffler 	info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
19474a0d6638SRuslan Ermilov 	info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr;
19483deb3649SAlexander V. Chernikov 	info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(
1949e02d3fe7SAlexander V. Chernikov 	    info.rti_info[RTAX_IFA], ifa->ifa_netmask, &ss);
1950becc44d7SSam Leffler 	info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
19516db47af4SAlexander V. Chernikov 	if ((m = rtsock_msg_mbuf(ncmd, &info)) == NULL)
19524cbac30bSAlexander V. Chernikov 		return (ENOBUFS);
1953df8bae1dSRodney W. Grimes 	ifam = mtod(m, struct ifa_msghdr *);
1954df8bae1dSRodney W. Grimes 	ifam->ifam_index = ifp->if_index;
19559753faf5SGleb Smirnoff 	ifam->ifam_metric = ifa->ifa_ifp->if_metric;
1956df8bae1dSRodney W. Grimes 	ifam->ifam_flags = ifa->ifa_flags;
1957df8bae1dSRodney W. Grimes 	ifam->ifam_addrs = info.rti_addrs;
19584cbac30bSAlexander V. Chernikov 
19594cbac30bSAlexander V. Chernikov 	if (fibnum != RT_ALL_FIBS) {
19604cbac30bSAlexander V. Chernikov 		M_SETFIB(m, fibnum);
19614cbac30bSAlexander V. Chernikov 		m->m_flags |= RTS_FILTER_FIB;
1962df8bae1dSRodney W. Grimes 	}
19634cbac30bSAlexander V. Chernikov 
19644cbac30bSAlexander V. Chernikov 	rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC);
19654cbac30bSAlexander V. Chernikov 
19664cbac30bSAlexander V. Chernikov 	return (0);
19674cbac30bSAlexander V. Chernikov }
19684cbac30bSAlexander V. Chernikov 
19694cbac30bSAlexander V. Chernikov /*
1970e02d3fe7SAlexander V. Chernikov  * Announce route addition/removal to rtsock based on @rt data.
1971e02d3fe7SAlexander V. Chernikov  * Callers are advives to use rt_routemsg() instead of using this
1972e02d3fe7SAlexander V. Chernikov  *  function directly.
1973e02d3fe7SAlexander V. Chernikov  * Assume @rt data is consistent.
19744cbac30bSAlexander V. Chernikov  *
19754cbac30bSAlexander V. Chernikov  * Returns 0 on success.
19764cbac30bSAlexander V. Chernikov  */
19774cbac30bSAlexander V. Chernikov int
1978d68cf57bSAlexander V. Chernikov rtsock_routemsg(int cmd, struct rtentry *rt, struct nhop_object *nh,
19794cbac30bSAlexander V. Chernikov     int fibnum)
19804cbac30bSAlexander V. Chernikov {
1981d68cf57bSAlexander V. Chernikov 	union sockaddr_union dst, mask;
1982e02d3fe7SAlexander V. Chernikov 	struct rt_addrinfo info;
1983df8bae1dSRodney W. Grimes 
1984c5d4eab6SMarko Zec 	if (V_route_cb.any_count == 0)
19854cbac30bSAlexander V. Chernikov 		return (0);
19864cbac30bSAlexander V. Chernikov 
1987d68cf57bSAlexander V. Chernikov 	int family = rt_get_family(rt);
1988d68cf57bSAlexander V. Chernikov 	init_sockaddrs_family(family, &dst.sa, &mask.sa);
1989d68cf57bSAlexander V. Chernikov 	export_rtaddrs(rt, &dst.sa, &mask.sa);
1990d68cf57bSAlexander V. Chernikov 
19914cbac30bSAlexander V. Chernikov 	bzero((caddr_t)&info, sizeof(info));
1992d68cf57bSAlexander V. Chernikov 	info.rti_info[RTAX_DST] = &dst.sa;
1993d68cf57bSAlexander V. Chernikov 	info.rti_info[RTAX_NETMASK] = &mask.sa;
199493bfd365SAlexander V. Chernikov 	info.rti_info[RTAX_GATEWAY] = &nh->gw_sa;
199593bfd365SAlexander V. Chernikov 	info.rti_flags = rt->rte_flags | nhop_get_rtflags(nh);
1996d68cf57bSAlexander V. Chernikov 	info.rti_ifp = nh->nh_ifp;
1997e02d3fe7SAlexander V. Chernikov 
1998e02d3fe7SAlexander V. Chernikov 	return (rtsock_routemsg_info(cmd, &info, fibnum));
1999e02d3fe7SAlexander V. Chernikov }
2000e02d3fe7SAlexander V. Chernikov 
2001e02d3fe7SAlexander V. Chernikov int
2002e02d3fe7SAlexander V. Chernikov rtsock_routemsg_info(int cmd, struct rt_addrinfo *info, int fibnum)
2003e02d3fe7SAlexander V. Chernikov {
2004e02d3fe7SAlexander V. Chernikov 	struct rt_msghdr *rtm;
2005e02d3fe7SAlexander V. Chernikov 	struct sockaddr *sa;
2006e02d3fe7SAlexander V. Chernikov 	struct mbuf *m;
2007e02d3fe7SAlexander V. Chernikov 
2008e02d3fe7SAlexander V. Chernikov 	if (V_route_cb.any_count == 0)
2009e02d3fe7SAlexander V. Chernikov 		return (0);
2010e02d3fe7SAlexander V. Chernikov 
2011e02d3fe7SAlexander V. Chernikov 	if (info->rti_flags & RTF_HOST)
2012e02d3fe7SAlexander V. Chernikov 		info->rti_info[RTAX_NETMASK] = NULL;
2013e02d3fe7SAlexander V. Chernikov 
2014e02d3fe7SAlexander V. Chernikov 	m = rtsock_msg_mbuf(cmd, info);
2015e02d3fe7SAlexander V. Chernikov 	if (m == NULL)
20164cbac30bSAlexander V. Chernikov 		return (ENOBUFS);
20174cbac30bSAlexander V. Chernikov 
20187d9b6df1SAlexander V. Chernikov 	if (fibnum != RT_ALL_FIBS) {
2019e02d3fe7SAlexander V. Chernikov 		KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out "
2020e02d3fe7SAlexander V. Chernikov 		    "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs));
2021528737fdSBjoern A. Zeeb 		M_SETFIB(m, fibnum);
2022528737fdSBjoern A. Zeeb 		m->m_flags |= RTS_FILTER_FIB;
2023528737fdSBjoern A. Zeeb 	}
20244cbac30bSAlexander V. Chernikov 
2025e02d3fe7SAlexander V. Chernikov 	rtm = mtod(m, struct rt_msghdr *);
2026e02d3fe7SAlexander V. Chernikov 	rtm->rtm_addrs = info->rti_addrs;
2027e02d3fe7SAlexander V. Chernikov 	if (info->rti_ifp != NULL)
2028e02d3fe7SAlexander V. Chernikov 		rtm->rtm_index = info->rti_ifp->if_index;
2029e02d3fe7SAlexander V. Chernikov 	/* Add RTF_DONE to indicate command 'completion' required by API */
2030e02d3fe7SAlexander V. Chernikov 	info->rti_flags |= RTF_DONE;
2031e02d3fe7SAlexander V. Chernikov 	/* Reported routes has to be up */
2032e02d3fe7SAlexander V. Chernikov 	if (cmd == RTM_ADD || cmd == RTM_CHANGE)
2033e02d3fe7SAlexander V. Chernikov 		info->rti_flags |= RTF_UP;
2034e02d3fe7SAlexander V. Chernikov 	rtm->rtm_flags = info->rti_flags;
2035e02d3fe7SAlexander V. Chernikov 
2036e02d3fe7SAlexander V. Chernikov 	sa = info->rti_info[RTAX_DST];
20373ca1a2d6SMax Laier 	rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC);
20384cbac30bSAlexander V. Chernikov 
20394cbac30bSAlexander V. Chernikov 	return (0);
2040df8bae1dSRodney W. Grimes }
2041df8bae1dSRodney W. Grimes 
2042477180fbSGarrett Wollman /*
2043477180fbSGarrett Wollman  * This is the analogue to the rt_newaddrmsg which performs the same
2044477180fbSGarrett Wollman  * function but for multicast group memberhips.  This is easier since
2045477180fbSGarrett Wollman  * there is no route state to worry about.
2046477180fbSGarrett Wollman  */
2047477180fbSGarrett Wollman void
2048becc44d7SSam Leffler rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
2049477180fbSGarrett Wollman {
2050477180fbSGarrett Wollman 	struct rt_addrinfo info;
20515dfc91d7SLuigi Rizzo 	struct mbuf *m = NULL;
2052477180fbSGarrett Wollman 	struct ifnet *ifp = ifma->ifma_ifp;
2053477180fbSGarrett Wollman 	struct ifma_msghdr *ifmam;
2054477180fbSGarrett Wollman 
2055c5d4eab6SMarko Zec 	if (V_route_cb.any_count == 0)
2056477180fbSGarrett Wollman 		return;
2057477180fbSGarrett Wollman 
2058477180fbSGarrett Wollman 	bzero((caddr_t)&info, sizeof(info));
2059becc44d7SSam Leffler 	info.rti_info[RTAX_IFA] = ifma->ifma_addr;
20607edd877aSMatt Macy 	if (ifp && ifp->if_addr)
20617edd877aSMatt Macy 		info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr;
20627edd877aSMatt Macy 	else
20637edd877aSMatt Macy 		info.rti_info[RTAX_IFP] = NULL;
2064477180fbSGarrett Wollman 	/*
2065477180fbSGarrett Wollman 	 * If a link-layer address is present, present it as a ``gateway''
2066477180fbSGarrett Wollman 	 * (similarly to how ARP entries, e.g., are presented).
2067477180fbSGarrett Wollman 	 */
2068becc44d7SSam Leffler 	info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr;
20696db47af4SAlexander V. Chernikov 	m = rtsock_msg_mbuf(cmd, &info);
2070becc44d7SSam Leffler 	if (m == NULL)
2071477180fbSGarrett Wollman 		return;
2072477180fbSGarrett Wollman 	ifmam = mtod(m, struct ifma_msghdr *);
207375ae0c01SBruce M Simpson 	KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n",
207475ae0c01SBruce M Simpson 	    __func__));
2075477180fbSGarrett Wollman 	ifmam->ifmam_index = ifp->if_index;
2076477180fbSGarrett Wollman 	ifmam->ifmam_addrs = info.rti_addrs;
20773ca1a2d6SMax Laier 	rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC);
2078477180fbSGarrett Wollman }
207952041295SPoul-Henning Kamp 
2080b83a279fSSam Leffler static struct mbuf *
2081b83a279fSSam Leffler rt_makeifannouncemsg(struct ifnet *ifp, int type, int what,
2082b83a279fSSam Leffler 	struct rt_addrinfo *info)
2083b83a279fSSam Leffler {
2084b83a279fSSam Leffler 	struct if_announcemsghdr *ifan;
2085b83a279fSSam Leffler 	struct mbuf *m;
2086b83a279fSSam Leffler 
2087c5d4eab6SMarko Zec 	if (V_route_cb.any_count == 0)
2088b83a279fSSam Leffler 		return NULL;
2089b83a279fSSam Leffler 	bzero((caddr_t)info, sizeof(*info));
20906db47af4SAlexander V. Chernikov 	m = rtsock_msg_mbuf(type, info);
2091b83a279fSSam Leffler 	if (m != NULL) {
2092b83a279fSSam Leffler 		ifan = mtod(m, struct if_announcemsghdr *);
2093b83a279fSSam Leffler 		ifan->ifan_index = ifp->if_index;
2094b83a279fSSam Leffler 		strlcpy(ifan->ifan_name, ifp->if_xname,
2095b83a279fSSam Leffler 			sizeof(ifan->ifan_name));
2096b83a279fSSam Leffler 		ifan->ifan_what = what;
2097b83a279fSSam Leffler 	}
2098b83a279fSSam Leffler 	return m;
2099b83a279fSSam Leffler }
2100b83a279fSSam Leffler 
2101b83a279fSSam Leffler /*
2102b83a279fSSam Leffler  * This is called to generate routing socket messages indicating
2103b83a279fSSam Leffler  * IEEE80211 wireless events.
2104b83a279fSSam Leffler  * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way.
2105b83a279fSSam Leffler  */
2106b83a279fSSam Leffler void
2107b83a279fSSam Leffler rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len)
2108b83a279fSSam Leffler {
2109b83a279fSSam Leffler 	struct mbuf *m;
2110b83a279fSSam Leffler 	struct rt_addrinfo info;
2111b83a279fSSam Leffler 
2112b83a279fSSam Leffler 	m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info);
2113b83a279fSSam Leffler 	if (m != NULL) {
2114b83a279fSSam Leffler 		/*
2115b83a279fSSam Leffler 		 * Append the ieee80211 data.  Try to stick it in the
2116b83a279fSSam Leffler 		 * mbuf containing the ifannounce msg; otherwise allocate
2117b83a279fSSam Leffler 		 * a new mbuf and append.
2118b83a279fSSam Leffler 		 *
2119b83a279fSSam Leffler 		 * NB: we assume m is a single mbuf.
2120b83a279fSSam Leffler 		 */
2121b83a279fSSam Leffler 		if (data_len > M_TRAILINGSPACE(m)) {
2122b83a279fSSam Leffler 			struct mbuf *n = m_get(M_NOWAIT, MT_DATA);
2123b83a279fSSam Leffler 			if (n == NULL) {
2124b83a279fSSam Leffler 				m_freem(m);
2125b83a279fSSam Leffler 				return;
2126b83a279fSSam Leffler 			}
2127b83a279fSSam Leffler 			bcopy(data, mtod(n, void *), data_len);
2128b83a279fSSam Leffler 			n->m_len = data_len;
2129b83a279fSSam Leffler 			m->m_next = n;
2130b83a279fSSam Leffler 		} else if (data_len > 0) {
2131b83a279fSSam Leffler 			bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len);
2132b83a279fSSam Leffler 			m->m_len += data_len;
2133b83a279fSSam Leffler 		}
2134b83a279fSSam Leffler 		if (m->m_flags & M_PKTHDR)
2135b83a279fSSam Leffler 			m->m_pkthdr.len += data_len;
2136b83a279fSSam Leffler 		mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len;
21373ca1a2d6SMax Laier 		rt_dispatch(m, AF_UNSPEC);
2138b83a279fSSam Leffler 	}
2139b83a279fSSam Leffler }
2140b83a279fSSam Leffler 
2141df8bae1dSRodney W. Grimes /*
21427b6edd04SRuslan Ermilov  * This is called to generate routing socket messages indicating
21437b6edd04SRuslan Ermilov  * network interface arrival and departure.
21447b6edd04SRuslan Ermilov  */
21457b6edd04SRuslan Ermilov void
2146becc44d7SSam Leffler rt_ifannouncemsg(struct ifnet *ifp, int what)
21477b6edd04SRuslan Ermilov {
21487b6edd04SRuslan Ermilov 	struct mbuf *m;
21497b6edd04SRuslan Ermilov 	struct rt_addrinfo info;
21507b6edd04SRuslan Ermilov 
2151b83a279fSSam Leffler 	m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info);
2152b83a279fSSam Leffler 	if (m != NULL)
21533ca1a2d6SMax Laier 		rt_dispatch(m, AF_UNSPEC);
2154becc44d7SSam Leffler }
2155becc44d7SSam Leffler 
2156becc44d7SSam Leffler static void
21573ca1a2d6SMax Laier rt_dispatch(struct mbuf *m, sa_family_t saf)
2158becc44d7SSam Leffler {
2159d989c7b3SRobert Watson 	struct m_tag *tag;
2160becc44d7SSam Leffler 
2161d989c7b3SRobert Watson 	/*
2162d989c7b3SRobert Watson 	 * Preserve the family from the sockaddr, if any, in an m_tag for
2163d989c7b3SRobert Watson 	 * use when injecting the mbuf into the routing socket buffer from
2164d989c7b3SRobert Watson 	 * the netisr.
2165d989c7b3SRobert Watson 	 */
21663ca1a2d6SMax Laier 	if (saf != AF_UNSPEC) {
2167d989c7b3SRobert Watson 		tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short),
2168d989c7b3SRobert Watson 		    M_NOWAIT);
2169d989c7b3SRobert Watson 		if (tag == NULL) {
2170d989c7b3SRobert Watson 			m_freem(m);
2171d989c7b3SRobert Watson 			return;
2172d989c7b3SRobert Watson 		}
21733ca1a2d6SMax Laier 		*(unsigned short *)(tag + 1) = saf;
2174d989c7b3SRobert Watson 		m_tag_prepend(m, tag);
2175d989c7b3SRobert Watson 	}
217621ca7b57SMarko Zec #ifdef VIMAGE
217721ca7b57SMarko Zec 	if (V_loif)
217821ca7b57SMarko Zec 		m->m_pkthdr.rcvif = V_loif;
217921ca7b57SMarko Zec 	else {
218021ca7b57SMarko Zec 		m_freem(m);
218121ca7b57SMarko Zec 		return;
218221ca7b57SMarko Zec 	}
218321ca7b57SMarko Zec #endif
21843161f583SAndre Oppermann 	netisr_queue(NETISR_ROUTE, m);	/* mbuf is free'd on failure. */
21857b6edd04SRuslan Ermilov }
21867b6edd04SRuslan Ermilov 
21877b6edd04SRuslan Ermilov /*
2188758c9d54SAlexander V. Chernikov  * Checks if rte can be exported w.r.t jails/vnets.
2189c83dda36SAlexander V. Chernikov  *
2190758c9d54SAlexander V. Chernikov  * Returns true if it can, false otherwise.
2191c83dda36SAlexander V. Chernikov  */
2192d68fb8d9SAlexander V. Chernikov static bool
2193d68fb8d9SAlexander V. Chernikov can_export_rte(struct ucred *td_ucred, bool rt_is_host,
2194d68fb8d9SAlexander V. Chernikov     const struct sockaddr *rt_dst)
2195c83dda36SAlexander V. Chernikov {
2196c83dda36SAlexander V. Chernikov 
2197d68fb8d9SAlexander V. Chernikov 	if ((!rt_is_host) ? jailed_without_vnet(td_ucred)
2198d68fb8d9SAlexander V. Chernikov 	    : prison_if(td_ucred, rt_dst) != 0)
2199d68fb8d9SAlexander V. Chernikov 		return (false);
2200d68fb8d9SAlexander V. Chernikov 	return (true);
2201c83dda36SAlexander V. Chernikov }
2202c83dda36SAlexander V. Chernikov 
2203d68fb8d9SAlexander V. Chernikov 
2204c83dda36SAlexander V. Chernikov /*
2205df8bae1dSRodney W. Grimes  * This is used in dumping the kernel table via sysctl().
2206df8bae1dSRodney W. Grimes  */
220737c84183SPoul-Henning Kamp static int
2208d68fb8d9SAlexander V. Chernikov sysctl_dumpentry(struct rtentry *rt, void *vw)
2209df8bae1dSRodney W. Grimes {
2210becc44d7SSam Leffler 	struct walkarg *w = vw;
22118c61eb21SAlexander V. Chernikov 	struct nhop_object *nh;
22122259a030SAlexander V. Chernikov 	int error = 0;
2213df8bae1dSRodney W. Grimes 
2214a68cc388SGleb Smirnoff 	NET_EPOCH_ASSERT();
2215a716ad4aSAndrey V. Elsukov 
2216d68fb8d9SAlexander V. Chernikov 	export_rtaddrs(rt, w->dst, w->mask);
2217d68fb8d9SAlexander V. Chernikov 	if (!can_export_rte(w->w_req->td->td_ucred, rt_is_host(rt), w->dst))
2218813dd6aeSBjoern A. Zeeb 		return (0);
2219d68fb8d9SAlexander V. Chernikov 	nh = rt_get_raw_nhop(rt);
2220fedeb08bSAlexander V. Chernikov #ifdef ROUTE_MPATH
2221fedeb08bSAlexander V. Chernikov 	if (NH_IS_NHGRP(nh)) {
2222fedeb08bSAlexander V. Chernikov 		struct weightened_nhop *wn;
2223fedeb08bSAlexander V. Chernikov 		uint32_t num_nhops;
2224fedeb08bSAlexander V. Chernikov 		wn = nhgrp_get_nhops((struct nhgrp_object *)nh, &num_nhops);
2225fedeb08bSAlexander V. Chernikov 		for (int i = 0; i < num_nhops; i++) {
2226fedeb08bSAlexander V. Chernikov 			error = sysctl_dumpnhop(rt, wn[i].nh, wn[i].weight, w);
2227fedeb08bSAlexander V. Chernikov 			if (error != 0)
2228fedeb08bSAlexander V. Chernikov 				return (error);
2229fedeb08bSAlexander V. Chernikov 		}
2230fedeb08bSAlexander V. Chernikov 	} else
2231fedeb08bSAlexander V. Chernikov #endif
22322259a030SAlexander V. Chernikov 		error = sysctl_dumpnhop(rt, nh, rt->rt_weight, w);
22332259a030SAlexander V. Chernikov 
22342259a030SAlexander V. Chernikov 	return (0);
22352259a030SAlexander V. Chernikov }
22362259a030SAlexander V. Chernikov 
22372259a030SAlexander V. Chernikov 
22382259a030SAlexander V. Chernikov static int
22392259a030SAlexander V. Chernikov sysctl_dumpnhop(struct rtentry *rt, struct nhop_object *nh, uint32_t weight,
22402259a030SAlexander V. Chernikov     struct walkarg *w)
22412259a030SAlexander V. Chernikov {
22422259a030SAlexander V. Chernikov 	struct rt_addrinfo info;
22432259a030SAlexander V. Chernikov 	int error = 0, size;
2244d68fb8d9SAlexander V. Chernikov 	uint32_t rtflags;
2245d68fb8d9SAlexander V. Chernikov 
2246d68fb8d9SAlexander V. Chernikov 	rtflags = nhop_get_rtflags(nh);
2247d68fb8d9SAlexander V. Chernikov 
2248d68fb8d9SAlexander V. Chernikov 	if (w->w_op == NET_RT_FLAGS && !(rtflags & w->w_arg))
2249d68fb8d9SAlexander V. Chernikov 		return (0);
22502259a030SAlexander V. Chernikov 
2251df8bae1dSRodney W. Grimes 	bzero((caddr_t)&info, sizeof(info));
2252d68fb8d9SAlexander V. Chernikov 	info.rti_info[RTAX_DST] = w->dst;
225393bfd365SAlexander V. Chernikov 	info.rti_info[RTAX_GATEWAY] = &nh->gw_sa;
2254d68fb8d9SAlexander V. Chernikov 	info.rti_info[RTAX_NETMASK] = (rtflags & RTF_HOST) ? NULL : w->mask;
22556e6b3f7cSQing Li 	info.rti_info[RTAX_GENMASK] = 0;
22568c61eb21SAlexander V. Chernikov 	if (nh->nh_ifp && !(nh->nh_ifp->if_flags & IFF_DYING)) {
22578c61eb21SAlexander V. Chernikov 		info.rti_info[RTAX_IFP] = nh->nh_ifp->if_addr->ifa_addr;
22588c61eb21SAlexander V. Chernikov 		info.rti_info[RTAX_IFA] = nh->nh_ifa->ifa_addr;
22598c61eb21SAlexander V. Chernikov 		if (nh->nh_ifp->if_flags & IFF_POINTOPOINT)
22608c61eb21SAlexander V. Chernikov 			info.rti_info[RTAX_BRD] = nh->nh_ifa->ifa_dstaddr;
226128070a0eSRuslan Ermilov 	}
2262f2e5eb36SAlexander V. Chernikov 	if ((error = rtsock_msg_buffer(RTM_GET, &info, w, &size)) != 0)
2263f2e5eb36SAlexander V. Chernikov 		return (error);
226452041295SPoul-Henning Kamp 	if (w->w_req && w->w_tmem) {
2265becc44d7SSam Leffler 		struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
2266df8bae1dSRodney W. Grimes 
2267d25f8522SMark Johnston 		bzero(&rtm->rtm_index,
2268d25f8522SMark Johnston 		    sizeof(*rtm) - offsetof(struct rt_msghdr, rtm_index));
2269d68fb8d9SAlexander V. Chernikov 
2270d68fb8d9SAlexander V. Chernikov 		/*
2271d68fb8d9SAlexander V. Chernikov 		 * rte flags may consist of RTF_HOST (duplicated in nhop rtflags)
2272d68fb8d9SAlexander V. Chernikov 		 * and RTF_UP (if entry is linked, which is always true here).
2273d68fb8d9SAlexander V. Chernikov 		 * Given that, use nhop rtflags & add RTF_UP.
2274d68fb8d9SAlexander V. Chernikov 		 */
2275d68fb8d9SAlexander V. Chernikov 		rtm->rtm_flags = rtflags | RTF_UP;
2276d68fb8d9SAlexander V. Chernikov 		if (rtm->rtm_flags & RTF_GWFLAG_COMPAT)
2277f672f56fSQing Li 			rtm->rtm_flags = RTF_GATEWAY |
2278d68fb8d9SAlexander V. Chernikov 				(rtm->rtm_flags & ~RTF_GWFLAG_COMPAT);
227993bfd365SAlexander V. Chernikov 		rt_getmetrics(rt, nh, &rtm->rtm_rmx);
2280fedeb08bSAlexander V. Chernikov 		rtm->rtm_rmx.rmx_weight = weight;
22818c61eb21SAlexander V. Chernikov 		rtm->rtm_index = nh->nh_ifp->if_index;
2282df8bae1dSRodney W. Grimes 		rtm->rtm_addrs = info.rti_addrs;
228352041295SPoul-Henning Kamp 		error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
228452041295SPoul-Henning Kamp 		return (error);
2285df8bae1dSRodney W. Grimes 	}
2286df8bae1dSRodney W. Grimes 	return (error);
2287df8bae1dSRodney W. Grimes }
2288df8bae1dSRodney W. Grimes 
228937c84183SPoul-Henning Kamp static int
2290ab607f28SRyan Stone sysctl_iflist_ifml(struct ifnet *ifp, const struct if_data *src_ifd,
2291ab607f28SRyan Stone     struct rt_addrinfo *info, struct walkarg *w, int len)
22926d076ae8SBjoern A. Zeeb {
22936d076ae8SBjoern A. Zeeb 	struct if_msghdrl *ifm;
2294b245f96cSGleb Smirnoff 	struct if_data *ifd;
2295b245f96cSGleb Smirnoff 
2296b245f96cSGleb Smirnoff 	ifm = (struct if_msghdrl *)w->w_tmem;
22976d076ae8SBjoern A. Zeeb 
22986d076ae8SBjoern A. Zeeb #ifdef COMPAT_FREEBSD32
22996d076ae8SBjoern A. Zeeb 	if (w->w_req->flags & SCTL_MASK32) {
23006d076ae8SBjoern A. Zeeb 		struct if_msghdrl32 *ifm32;
23016d076ae8SBjoern A. Zeeb 
2302b245f96cSGleb Smirnoff 		ifm32 = (struct if_msghdrl32 *)ifm;
23036d076ae8SBjoern A. Zeeb 		ifm32->ifm_addrs = info->rti_addrs;
23046d076ae8SBjoern A. Zeeb 		ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
23056d076ae8SBjoern A. Zeeb 		ifm32->ifm_index = ifp->if_index;
23066d076ae8SBjoern A. Zeeb 		ifm32->_ifm_spare1 = 0;
23076d076ae8SBjoern A. Zeeb 		ifm32->ifm_len = sizeof(*ifm32);
23086d076ae8SBjoern A. Zeeb 		ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data);
2309d25f8522SMark Johnston 		ifm32->_ifm_spare2 = 0;
2310b245f96cSGleb Smirnoff 		ifd = &ifm32->ifm_data;
2311b245f96cSGleb Smirnoff 	} else
23126d076ae8SBjoern A. Zeeb #endif
2313b245f96cSGleb Smirnoff 	{
23146d076ae8SBjoern A. Zeeb 		ifm->ifm_addrs = info->rti_addrs;
23156d076ae8SBjoern A. Zeeb 		ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
23166d076ae8SBjoern A. Zeeb 		ifm->ifm_index = ifp->if_index;
23176d076ae8SBjoern A. Zeeb 		ifm->_ifm_spare1 = 0;
23186d076ae8SBjoern A. Zeeb 		ifm->ifm_len = sizeof(*ifm);
23196d076ae8SBjoern A. Zeeb 		ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data);
2320d25f8522SMark Johnston 		ifm->_ifm_spare2 = 0;
2321b245f96cSGleb Smirnoff 		ifd = &ifm->ifm_data;
2322b245f96cSGleb Smirnoff 	}
23236d076ae8SBjoern A. Zeeb 
2324ab607f28SRyan Stone 	memcpy(ifd, src_ifd, sizeof(*ifd));
2325b245f96cSGleb Smirnoff 
23266d076ae8SBjoern A. Zeeb 	return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len));
23276d076ae8SBjoern A. Zeeb }
23286d076ae8SBjoern A. Zeeb 
23296d076ae8SBjoern A. Zeeb static int
2330ab607f28SRyan Stone sysctl_iflist_ifm(struct ifnet *ifp, const struct if_data *src_ifd,
2331ab607f28SRyan Stone     struct rt_addrinfo *info, struct walkarg *w, int len)
23326d076ae8SBjoern A. Zeeb {
23336d076ae8SBjoern A. Zeeb 	struct if_msghdr *ifm;
2334b245f96cSGleb Smirnoff 	struct if_data *ifd;
2335b245f96cSGleb Smirnoff 
2336b245f96cSGleb Smirnoff 	ifm = (struct if_msghdr *)w->w_tmem;
23376d076ae8SBjoern A. Zeeb 
23386d076ae8SBjoern A. Zeeb #ifdef COMPAT_FREEBSD32
23396d076ae8SBjoern A. Zeeb 	if (w->w_req->flags & SCTL_MASK32) {
23406d076ae8SBjoern A. Zeeb 		struct if_msghdr32 *ifm32;
23416d076ae8SBjoern A. Zeeb 
2342b245f96cSGleb Smirnoff 		ifm32 = (struct if_msghdr32 *)ifm;
23436d076ae8SBjoern A. Zeeb 		ifm32->ifm_addrs = info->rti_addrs;
23446d076ae8SBjoern A. Zeeb 		ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
23456d076ae8SBjoern A. Zeeb 		ifm32->ifm_index = ifp->if_index;
2346d25f8522SMark Johnston 		ifm32->_ifm_spare1 = 0;
2347b245f96cSGleb Smirnoff 		ifd = &ifm32->ifm_data;
2348b245f96cSGleb Smirnoff 	} else
23496d076ae8SBjoern A. Zeeb #endif
2350b245f96cSGleb Smirnoff 	{
23516d076ae8SBjoern A. Zeeb 		ifm->ifm_addrs = info->rti_addrs;
23526d076ae8SBjoern A. Zeeb 		ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
23536d076ae8SBjoern A. Zeeb 		ifm->ifm_index = ifp->if_index;
2354d25f8522SMark Johnston 		ifm->_ifm_spare1 = 0;
2355b245f96cSGleb Smirnoff 		ifd = &ifm->ifm_data;
2356b245f96cSGleb Smirnoff 	}
23576d076ae8SBjoern A. Zeeb 
2358ab607f28SRyan Stone 	memcpy(ifd, src_ifd, sizeof(*ifd));
23592d70c0deSGleb Smirnoff 
23606d076ae8SBjoern A. Zeeb 	return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len));
23616d076ae8SBjoern A. Zeeb }
23626d076ae8SBjoern A. Zeeb 
23636d076ae8SBjoern A. Zeeb static int
23646d076ae8SBjoern A. Zeeb sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info,
23656d076ae8SBjoern A. Zeeb     struct walkarg *w, int len)
23666d076ae8SBjoern A. Zeeb {
23676d076ae8SBjoern A. Zeeb 	struct ifa_msghdrl *ifam;
2368b245f96cSGleb Smirnoff 	struct if_data *ifd;
2369b245f96cSGleb Smirnoff 
2370b245f96cSGleb Smirnoff 	ifam = (struct ifa_msghdrl *)w->w_tmem;
23716d076ae8SBjoern A. Zeeb 
23726d076ae8SBjoern A. Zeeb #ifdef COMPAT_FREEBSD32
23736d076ae8SBjoern A. Zeeb 	if (w->w_req->flags & SCTL_MASK32) {
23746d076ae8SBjoern A. Zeeb 		struct ifa_msghdrl32 *ifam32;
23756d076ae8SBjoern A. Zeeb 
2376b245f96cSGleb Smirnoff 		ifam32 = (struct ifa_msghdrl32 *)ifam;
23776d076ae8SBjoern A. Zeeb 		ifam32->ifam_addrs = info->rti_addrs;
23786d076ae8SBjoern A. Zeeb 		ifam32->ifam_flags = ifa->ifa_flags;
23796d076ae8SBjoern A. Zeeb 		ifam32->ifam_index = ifa->ifa_ifp->if_index;
23806d076ae8SBjoern A. Zeeb 		ifam32->_ifam_spare1 = 0;
23816d076ae8SBjoern A. Zeeb 		ifam32->ifam_len = sizeof(*ifam32);
23826d076ae8SBjoern A. Zeeb 		ifam32->ifam_data_off =
23836d076ae8SBjoern A. Zeeb 		    offsetof(struct ifa_msghdrl32, ifam_data);
23849753faf5SGleb Smirnoff 		ifam32->ifam_metric = ifa->ifa_ifp->if_metric;
2385b245f96cSGleb Smirnoff 		ifd = &ifam32->ifam_data;
2386b245f96cSGleb Smirnoff 	} else
23876d076ae8SBjoern A. Zeeb #endif
2388b245f96cSGleb Smirnoff 	{
23896d076ae8SBjoern A. Zeeb 		ifam->ifam_addrs = info->rti_addrs;
23906d076ae8SBjoern A. Zeeb 		ifam->ifam_flags = ifa->ifa_flags;
23916d076ae8SBjoern A. Zeeb 		ifam->ifam_index = ifa->ifa_ifp->if_index;
23926d076ae8SBjoern A. Zeeb 		ifam->_ifam_spare1 = 0;
23936d076ae8SBjoern A. Zeeb 		ifam->ifam_len = sizeof(*ifam);
23946d076ae8SBjoern A. Zeeb 		ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data);
23959753faf5SGleb Smirnoff 		ifam->ifam_metric = ifa->ifa_ifp->if_metric;
2396b245f96cSGleb Smirnoff 		ifd = &ifam->ifam_data;
2397b245f96cSGleb Smirnoff 	}
23986d076ae8SBjoern A. Zeeb 
2399b245f96cSGleb Smirnoff 	bzero(ifd, sizeof(*ifd));
2400b245f96cSGleb Smirnoff 	ifd->ifi_datalen = sizeof(struct if_data);
2401b245f96cSGleb Smirnoff 	ifd->ifi_ipackets = counter_u64_fetch(ifa->ifa_ipackets);
2402b245f96cSGleb Smirnoff 	ifd->ifi_opackets = counter_u64_fetch(ifa->ifa_opackets);
2403b245f96cSGleb Smirnoff 	ifd->ifi_ibytes = counter_u64_fetch(ifa->ifa_ibytes);
2404b245f96cSGleb Smirnoff 	ifd->ifi_obytes = counter_u64_fetch(ifa->ifa_obytes);
24057caf4ab7SGleb Smirnoff 
24066d076ae8SBjoern A. Zeeb 	/* Fixup if_data carp(4) vhid. */
24076d076ae8SBjoern A. Zeeb 	if (carp_get_vhid_p != NULL)
2408b245f96cSGleb Smirnoff 		ifd->ifi_vhid = (*carp_get_vhid_p)(ifa);
24096d076ae8SBjoern A. Zeeb 
24106d076ae8SBjoern A. Zeeb 	return (SYSCTL_OUT(w->w_req, w->w_tmem, len));
24116d076ae8SBjoern A. Zeeb }
24126d076ae8SBjoern A. Zeeb 
24136d076ae8SBjoern A. Zeeb static int
24146d076ae8SBjoern A. Zeeb sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info,
24156d076ae8SBjoern A. Zeeb     struct walkarg *w, int len)
24166d076ae8SBjoern A. Zeeb {
24176d076ae8SBjoern A. Zeeb 	struct ifa_msghdr *ifam;
24186d076ae8SBjoern A. Zeeb 
24196d076ae8SBjoern A. Zeeb 	ifam = (struct ifa_msghdr *)w->w_tmem;
24206d076ae8SBjoern A. Zeeb 	ifam->ifam_addrs = info->rti_addrs;
24216d076ae8SBjoern A. Zeeb 	ifam->ifam_flags = ifa->ifa_flags;
24226d076ae8SBjoern A. Zeeb 	ifam->ifam_index = ifa->ifa_ifp->if_index;
2423d25f8522SMark Johnston 	ifam->_ifam_spare1 = 0;
24249753faf5SGleb Smirnoff 	ifam->ifam_metric = ifa->ifa_ifp->if_metric;
24256d076ae8SBjoern A. Zeeb 
24266d076ae8SBjoern A. Zeeb 	return (SYSCTL_OUT(w->w_req, w->w_tmem, len));
24276d076ae8SBjoern A. Zeeb }
24286d076ae8SBjoern A. Zeeb 
24296d076ae8SBjoern A. Zeeb static int
2430becc44d7SSam Leffler sysctl_iflist(int af, struct walkarg *w)
2431df8bae1dSRodney W. Grimes {
2432becc44d7SSam Leffler 	struct ifnet *ifp;
2433becc44d7SSam Leffler 	struct ifaddr *ifa;
2434ab607f28SRyan Stone 	struct if_data ifd;
2435df8bae1dSRodney W. Grimes 	struct rt_addrinfo info;
2436df8bae1dSRodney W. Grimes 	int len, error = 0;
24373deb3649SAlexander V. Chernikov 	struct sockaddr_storage ss;
2438df8bae1dSRodney W. Grimes 
2439df8bae1dSRodney W. Grimes 	bzero((caddr_t)&info, sizeof(info));
2440ab607f28SRyan Stone 	bzero(&ifd, sizeof(ifd));
24414f6c66ccSMatt Macy 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2442df8bae1dSRodney W. Grimes 		if (w->w_arg && w->w_arg != ifp->if_index)
2443df8bae1dSRodney W. Grimes 			continue;
2444ab607f28SRyan Stone 		if_data_copy(ifp, &ifd);
24454a0d6638SRuslan Ermilov 		ifa = ifp->if_addr;
2446becc44d7SSam Leffler 		info.rti_info[RTAX_IFP] = ifa->ifa_addr;
2447f2e5eb36SAlexander V. Chernikov 		error = rtsock_msg_buffer(RTM_IFINFO, &info, w, &len);
2448f2e5eb36SAlexander V. Chernikov 		if (error != 0)
2449f2e5eb36SAlexander V. Chernikov 			goto done;
24505dfc91d7SLuigi Rizzo 		info.rti_info[RTAX_IFP] = NULL;
245152041295SPoul-Henning Kamp 		if (w->w_req && w->w_tmem) {
24526d076ae8SBjoern A. Zeeb 			if (w->w_op == NET_RT_IFLISTL)
2453ab607f28SRyan Stone 				error = sysctl_iflist_ifml(ifp, &ifd, &info, w,
2454ab607f28SRyan Stone 				    len);
24556d076ae8SBjoern A. Zeeb 			else
2456ab607f28SRyan Stone 				error = sysctl_iflist_ifm(ifp, &ifd, &info, w,
2457ab607f28SRyan Stone 				    len);
2458df440948SPoul-Henning Kamp 			if (error)
2459a35b06c5SJonathan Lemon 				goto done;
2460df8bae1dSRodney W. Grimes 		}
2461d7c5a620SMatt Macy 		while ((ifa = CK_STAILQ_NEXT(ifa, ifa_link)) != NULL) {
2462df8bae1dSRodney W. Grimes 			if (af && af != ifa->ifa_addr->sa_family)
2463df8bae1dSRodney W. Grimes 				continue;
2464b89e82ddSJamie Gritton 			if (prison_if(w->w_req->td->td_ucred,
2465b89e82ddSJamie Gritton 			    ifa->ifa_addr) != 0)
246675c13541SPoul-Henning Kamp 				continue;
2467becc44d7SSam Leffler 			info.rti_info[RTAX_IFA] = ifa->ifa_addr;
24683deb3649SAlexander V. Chernikov 			info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(
24693deb3649SAlexander V. Chernikov 			    ifa->ifa_addr, ifa->ifa_netmask, &ss);
2470becc44d7SSam Leffler 			info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
2471f2e5eb36SAlexander V. Chernikov 			error = rtsock_msg_buffer(RTM_NEWADDR, &info, w, &len);
2472f2e5eb36SAlexander V. Chernikov 			if (error != 0)
2473f2e5eb36SAlexander V. Chernikov 				goto done;
247452041295SPoul-Henning Kamp 			if (w->w_req && w->w_tmem) {
24756d076ae8SBjoern A. Zeeb 				if (w->w_op == NET_RT_IFLISTL)
24766d076ae8SBjoern A. Zeeb 					error = sysctl_iflist_ifaml(ifa, &info,
24776d076ae8SBjoern A. Zeeb 					    w, len);
24786d076ae8SBjoern A. Zeeb 				else
24796d076ae8SBjoern A. Zeeb 					error = sysctl_iflist_ifam(ifa, &info,
24806d076ae8SBjoern A. Zeeb 					    w, len);
2481df440948SPoul-Henning Kamp 				if (error)
2482a35b06c5SJonathan Lemon 					goto done;
2483df8bae1dSRodney W. Grimes 			}
2484df8bae1dSRodney W. Grimes 		}
24853deb3649SAlexander V. Chernikov 		info.rti_info[RTAX_IFA] = NULL;
24863deb3649SAlexander V. Chernikov 		info.rti_info[RTAX_NETMASK] = NULL;
24875dfc91d7SLuigi Rizzo 		info.rti_info[RTAX_BRD] = NULL;
2488df8bae1dSRodney W. Grimes 	}
2489a35b06c5SJonathan Lemon done:
2490a35b06c5SJonathan Lemon 	return (error);
2491df8bae1dSRodney W. Grimes }
2492df8bae1dSRodney W. Grimes 
2493ebda3fc3SBjoern A. Zeeb static int
24949b98ee2cSLuigi Rizzo sysctl_ifmalist(int af, struct walkarg *w)
249505b2efe0SBruce M Simpson {
249605b2efe0SBruce M Simpson 	struct rt_addrinfo info;
24979b98ee2cSLuigi Rizzo 	struct ifaddr *ifa;
249855dfce58SMark Johnston 	struct ifmultiaddr *ifma;
249955dfce58SMark Johnston 	struct ifnet *ifp;
250055dfce58SMark Johnston 	int error, len;
250105b2efe0SBruce M Simpson 
2502b8a6e03fSGleb Smirnoff 	NET_EPOCH_ASSERT();
2503b8a6e03fSGleb Smirnoff 
250455dfce58SMark Johnston 	error = 0;
250505b2efe0SBruce M Simpson 	bzero((caddr_t)&info, sizeof(info));
250655dfce58SMark Johnston 
25074f6c66ccSMatt Macy 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
250805b2efe0SBruce M Simpson 		if (w->w_arg && w->w_arg != ifp->if_index)
250905b2efe0SBruce M Simpson 			continue;
25104a0d6638SRuslan Ermilov 		ifa = ifp->if_addr;
2511913af518SLuigi Rizzo 		info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL;
2512d7c5a620SMatt Macy 		CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
251305b2efe0SBruce M Simpson 			if (af && af != ifma->ifma_addr->sa_family)
251405b2efe0SBruce M Simpson 				continue;
2515b89e82ddSJamie Gritton 			if (prison_if(w->w_req->td->td_ucred,
2516b89e82ddSJamie Gritton 			    ifma->ifma_addr) != 0)
251705b2efe0SBruce M Simpson 				continue;
251805b2efe0SBruce M Simpson 			info.rti_info[RTAX_IFA] = ifma->ifma_addr;
2519913af518SLuigi Rizzo 			info.rti_info[RTAX_GATEWAY] =
2520913af518SLuigi Rizzo 			    (ifma->ifma_addr->sa_family != AF_LINK) ?
2521913af518SLuigi Rizzo 			    ifma->ifma_lladdr : NULL;
2522c9f98940SAlexander V. Chernikov 			error = rtsock_msg_buffer(RTM_NEWMADDR, &info, w, &len);
2523f2e5eb36SAlexander V. Chernikov 			if (error != 0)
252455dfce58SMark Johnston 				break;
252505b2efe0SBruce M Simpson 			if (w->w_req && w->w_tmem) {
25269b98ee2cSLuigi Rizzo 				struct ifma_msghdr *ifmam;
252705b2efe0SBruce M Simpson 
252805b2efe0SBruce M Simpson 				ifmam = (struct ifma_msghdr *)w->w_tmem;
252905b2efe0SBruce M Simpson 				ifmam->ifmam_index = ifma->ifma_ifp->if_index;
253005b2efe0SBruce M Simpson 				ifmam->ifmam_flags = 0;
253105b2efe0SBruce M Simpson 				ifmam->ifmam_addrs = info.rti_addrs;
2532d25f8522SMark Johnston 				ifmam->_ifmam_spare1 = 0;
253305b2efe0SBruce M Simpson 				error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
253455dfce58SMark Johnston 				if (error != 0)
253555dfce58SMark Johnston 					break;
253605b2efe0SBruce M Simpson 			}
253705b2efe0SBruce M Simpson 		}
253855dfce58SMark Johnston 		if (error != 0)
253955dfce58SMark Johnston 			break;
2540fe0fc7efSChristian S.J. Peron 	}
254105b2efe0SBruce M Simpson 	return (error);
254205b2efe0SBruce M Simpson }
254305b2efe0SBruce M Simpson 
2544d68fb8d9SAlexander V. Chernikov static void
2545d68fb8d9SAlexander V. Chernikov rtable_sysctl_dump(uint32_t fibnum, int family, struct walkarg *w)
2546d68fb8d9SAlexander V. Chernikov {
2547d68fb8d9SAlexander V. Chernikov 	union sockaddr_union sa_dst, sa_mask;
2548d68fb8d9SAlexander V. Chernikov 
2549d68fb8d9SAlexander V. Chernikov 	w->family = family;
2550d68fb8d9SAlexander V. Chernikov 	w->dst = (struct sockaddr *)&sa_dst;
2551d68fb8d9SAlexander V. Chernikov 	w->mask = (struct sockaddr *)&sa_mask;
2552d68fb8d9SAlexander V. Chernikov 
2553d68fb8d9SAlexander V. Chernikov 	init_sockaddrs_family(family, w->dst, w->mask);
2554d68fb8d9SAlexander V. Chernikov 
2555d68fb8d9SAlexander V. Chernikov 	rib_walk(fibnum, family, false, sysctl_dumpentry, w);
2556d68fb8d9SAlexander V. Chernikov }
2557d68fb8d9SAlexander V. Chernikov 
255852041295SPoul-Henning Kamp static int
255982d9ae4eSPoul-Henning Kamp sysctl_rtsock(SYSCTL_HANDLER_ARGS)
2560df8bae1dSRodney W. Grimes {
2561b8a6e03fSGleb Smirnoff 	struct epoch_tracker et;
256252041295SPoul-Henning Kamp 	int	*name = (int *)arg1;
256352041295SPoul-Henning Kamp 	u_int	namelen = arg2;
256461eee0e2SAlexander V. Chernikov 	struct rib_head *rnh = NULL; /* silence compiler. */
2565fe0fc7efSChristian S.J. Peron 	int	i, lim, error = EINVAL;
25664825b1e0SHiroki Sato 	int	fib = 0;
2567df8bae1dSRodney W. Grimes 	u_char	af;
2568df8bae1dSRodney W. Grimes 	struct	walkarg w;
2569df8bae1dSRodney W. Grimes 
2570*0dcef81dSMark Johnston 	if (namelen < 3)
2571*0dcef81dSMark Johnston 		return (EINVAL);
2572*0dcef81dSMark Johnston 
257352041295SPoul-Henning Kamp 	name++;
257452041295SPoul-Henning Kamp 	namelen--;
257552041295SPoul-Henning Kamp 	if (req->newptr)
2576df8bae1dSRodney W. Grimes 		return (EPERM);
2577fedeb08bSAlexander V. Chernikov 	if (name[1] == NET_RT_DUMP || name[1] == NET_RT_NHOP || name[1] == NET_RT_NHGRP) {
25784825b1e0SHiroki Sato 		if (namelen == 3)
25794825b1e0SHiroki Sato 			fib = req->td->td_proc->p_fibnum;
25804825b1e0SHiroki Sato 		else if (namelen == 4)
25817d9b6df1SAlexander V. Chernikov 			fib = (name[3] == RT_ALL_FIBS) ?
25824825b1e0SHiroki Sato 			    req->td->td_proc->p_fibnum : name[3];
25834825b1e0SHiroki Sato 		else
25844825b1e0SHiroki Sato 			return ((namelen < 3) ? EISDIR : ENOTDIR);
25854825b1e0SHiroki Sato 		if (fib < 0 || fib >= rt_numfibs)
25864825b1e0SHiroki Sato 			return (EINVAL);
25874825b1e0SHiroki Sato 	} else if (namelen != 3)
2588f7a54d06SCrist J. Clark 		return ((namelen < 3) ? EISDIR : ENOTDIR);
2589df8bae1dSRodney W. Grimes 	af = name[0];
2590b2aaf46eSJeffrey Hsu 	if (af > AF_MAX)
2591b2aaf46eSJeffrey Hsu 		return (EINVAL);
25926b96f1afSLuigi Rizzo 	bzero(&w, sizeof(w));
2593df8bae1dSRodney W. Grimes 	w.w_op = name[1];
2594df8bae1dSRodney W. Grimes 	w.w_arg = name[2];
259552041295SPoul-Henning Kamp 	w.w_req = req;
2596df8bae1dSRodney W. Grimes 
2597fe0fc7efSChristian S.J. Peron 	error = sysctl_wire_old_buffer(req, 0);
2598fe0fc7efSChristian S.J. Peron 	if (error)
2599fe0fc7efSChristian S.J. Peron 		return (error);
2600f2e5eb36SAlexander V. Chernikov 
2601f2e5eb36SAlexander V. Chernikov 	/*
2602f2e5eb36SAlexander V. Chernikov 	 * Allocate reply buffer in advance.
2603f2e5eb36SAlexander V. Chernikov 	 * All rtsock messages has maximum length of u_short.
2604f2e5eb36SAlexander V. Chernikov 	 */
2605f2e5eb36SAlexander V. Chernikov 	w.w_tmemsize = 65536;
2606f2e5eb36SAlexander V. Chernikov 	w.w_tmem = malloc(w.w_tmemsize, M_TEMP, M_WAITOK);
2607f2e5eb36SAlexander V. Chernikov 
2608b8a6e03fSGleb Smirnoff 	NET_EPOCH_ENTER(et);
2609df8bae1dSRodney W. Grimes 	switch (w.w_op) {
2610df8bae1dSRodney W. Grimes 	case NET_RT_DUMP:
2611df8bae1dSRodney W. Grimes 	case NET_RT_FLAGS:
2612a8b76c8fSLuigi Rizzo 		if (af == 0) {			/* dump all tables */
2613a8b76c8fSLuigi Rizzo 			i = 1;
2614a8b76c8fSLuigi Rizzo 			lim = AF_MAX;
2615a8b76c8fSLuigi Rizzo 		} else				/* dump only one table */
2616a8b76c8fSLuigi Rizzo 			i = lim = af;
26178eca593cSQing Li 
26188eca593cSQing Li 		/*
26198eca593cSQing Li 		 * take care of llinfo entries, the caller must
26208eca593cSQing Li 		 * specify an AF
26218eca593cSQing Li 		 */
262214981d80SQing Li 		if (w.w_op == NET_RT_FLAGS &&
262382b334e8SQing Li 		    (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) {
26248eca593cSQing Li 			if (af != 0)
26258eca593cSQing Li 				error = lltable_sysctl_dumparp(af, w.w_req);
26268eca593cSQing Li 			else
26278eca593cSQing Li 				error = EINVAL;
26288eca593cSQing Li 			break;
26298eca593cSQing Li 		}
26308eca593cSQing Li 		/*
26318eca593cSQing Li 		 * take care of routing entries
26328eca593cSQing Li 		 */
263320b0cdb7SBjoern A. Zeeb 		for (error = 0; error == 0 && i <= lim; i++) {
26344825b1e0SHiroki Sato 			rnh = rt_tables_get_rnh(fib, i);
2635c2c2a7c1SBjoern A. Zeeb 			if (rnh != NULL) {
2636d68fb8d9SAlexander V. Chernikov 				rtable_sysctl_dump(fib, i, &w);
2637a8b76c8fSLuigi Rizzo 			} else if (af != 0)
2638956b0b65SJeffrey Hsu 				error = EAFNOSUPPORT;
263920b0cdb7SBjoern A. Zeeb 		}
2640df8bae1dSRodney W. Grimes 		break;
2641a6663252SAlexander V. Chernikov 	case NET_RT_NHOP:
2642fedeb08bSAlexander V. Chernikov 	case NET_RT_NHGRP:
2643a6663252SAlexander V. Chernikov 		/* Allow dumping one specific af/fib at a time */
2644a6663252SAlexander V. Chernikov 		if (namelen < 4) {
2645a6663252SAlexander V. Chernikov 			error = EINVAL;
2646a6663252SAlexander V. Chernikov 			break;
2647a6663252SAlexander V. Chernikov 		}
2648a6663252SAlexander V. Chernikov 		fib = name[3];
2649a6663252SAlexander V. Chernikov 		if (fib < 0 || fib > rt_numfibs) {
2650a6663252SAlexander V. Chernikov 			error = EINVAL;
2651a6663252SAlexander V. Chernikov 			break;
2652a6663252SAlexander V. Chernikov 		}
2653a6663252SAlexander V. Chernikov 		rnh = rt_tables_get_rnh(fib, af);
2654a6663252SAlexander V. Chernikov 		if (rnh == NULL) {
2655a6663252SAlexander V. Chernikov 			error = EAFNOSUPPORT;
2656a6663252SAlexander V. Chernikov 			break;
2657a6663252SAlexander V. Chernikov 		}
2658a6663252SAlexander V. Chernikov 		if (w.w_op == NET_RT_NHOP)
2659a6663252SAlexander V. Chernikov 			error = nhops_dump_sysctl(rnh, w.w_req);
2660fedeb08bSAlexander V. Chernikov 		else
2661fedeb08bSAlexander V. Chernikov #ifdef ROUTE_MPATH
2662fedeb08bSAlexander V. Chernikov 			error = nhgrp_dump_sysctl(rnh, w.w_req);
2663fedeb08bSAlexander V. Chernikov #else
2664fedeb08bSAlexander V. Chernikov 			error = ENOTSUP;
2665fedeb08bSAlexander V. Chernikov #endif
2666a6663252SAlexander V. Chernikov 		break;
2667df8bae1dSRodney W. Grimes 	case NET_RT_IFLIST:
26686d076ae8SBjoern A. Zeeb 	case NET_RT_IFLISTL:
2669df8bae1dSRodney W. Grimes 		error = sysctl_iflist(af, &w);
267005b2efe0SBruce M Simpson 		break;
267105b2efe0SBruce M Simpson 
267205b2efe0SBruce M Simpson 	case NET_RT_IFMALIST:
267305b2efe0SBruce M Simpson 		error = sysctl_ifmalist(af, &w);
267405b2efe0SBruce M Simpson 		break;
2675df8bae1dSRodney W. Grimes 	}
2676b8a6e03fSGleb Smirnoff 	NET_EPOCH_EXIT(et);
2677f2e5eb36SAlexander V. Chernikov 
2678f2e5eb36SAlexander V. Chernikov 	free(w.w_tmem, M_TEMP);
2679df8bae1dSRodney W. Grimes 	return (error);
2680df8bae1dSRodney W. Grimes }
2681df8bae1dSRodney W. Grimes 
26828a9a28c4SGleb Smirnoff static SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD | CTLFLAG_MPSAFE,
26838a9a28c4SGleb Smirnoff     sysctl_rtsock, "Return route tables and interface/address lists");
268452041295SPoul-Henning Kamp 
2685df8bae1dSRodney W. Grimes /*
2686df8bae1dSRodney W. Grimes  * Definitions of protocols supported in the ROUTE domain.
2687df8bae1dSRodney W. Grimes  */
2688df8bae1dSRodney W. Grimes 
26895b1c0294SDavid E. O'Brien static struct domain routedomain;		/* or at least forward */
2690df8bae1dSRodney W. Grimes 
269152041295SPoul-Henning Kamp static struct protosw routesw[] = {
2692303989a2SRuslan Ermilov {
2693303989a2SRuslan Ermilov 	.pr_type =		SOCK_RAW,
2694303989a2SRuslan Ermilov 	.pr_domain =		&routedomain,
2695303989a2SRuslan Ermilov 	.pr_flags =		PR_ATOMIC|PR_ADDR,
2696303989a2SRuslan Ermilov 	.pr_output =		route_output,
2697303989a2SRuslan Ermilov 	.pr_ctlinput =		raw_ctlinput,
2698303989a2SRuslan Ermilov 	.pr_init =		raw_init,
2699303989a2SRuslan Ermilov 	.pr_usrreqs =		&route_usrreqs
2700df8bae1dSRodney W. Grimes }
2701df8bae1dSRodney W. Grimes };
2702df8bae1dSRodney W. Grimes 
2703303989a2SRuslan Ermilov static struct domain routedomain = {
2704303989a2SRuslan Ermilov 	.dom_family =		PF_ROUTE,
2705303989a2SRuslan Ermilov 	.dom_name =		"route",
2706303989a2SRuslan Ermilov 	.dom_protosw =		routesw,
270702abd400SPedro F. Giffuni 	.dom_protoswNPROTOSW =	&routesw[nitems(routesw)]
2708303989a2SRuslan Ermilov };
270978a82810SGarrett Wollman 
2710d0728d71SRobert Watson VNET_DOMAIN_SET(route);
2711