2 * Interface looking up by ioctl () on Solaris.
3 * Copyright (C) 1997, 98 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "sockunion.h"
30 #include "connected.h"
32 #include "zebra_memory.h"
37 #include "lib_errors.h"
39 #include "zebra/interface.h"
40 #include "zebra/ioctl_solaris.h"
41 #include "zebra/rib.h"
43 #include "zebra/zebra_errors.h"
45 static int if_get_addr(struct interface
*, struct sockaddr
*, const char *);
46 static void interface_info_ioctl(struct interface
*);
47 extern struct zebra_privs_t zserv_privs
;
49 static int interface_list_ioctl(int af
)
56 struct lifreq
*lifreq
;
57 struct lifconf lifconf
;
58 struct interface
*ifp
;
60 size_t needed
, lastneeded
= 0;
63 frr_with_privs(&zserv_privs
) {
64 sock
= socket(af
, SOCK_DGRAM
, 0);
68 flog_err_sys(EC_LIB_SOCKET
, "Can't make %s socket stream: %s",
69 (af
== AF_INET
? "AF_INET" : "AF_INET6"),
70 safe_strerror(errno
));
75 frr_with_privs(&zserv_privs
) {
76 lifn
.lifn_family
= af
;
77 lifn
.lifn_flags
= LIFC_NOXMIT
;
78 /* we want NOXMIT interfaces too */
79 ret
= ioctl(sock
, SIOCGLIFNUM
, &lifn
);
83 flog_err_sys(EC_LIB_SYSTEM_CALL
,
84 "interface_list_ioctl: SIOCGLIFNUM failed %s",
85 safe_strerror(errno
));
89 ifnum
= lifn
.lifn_count
;
92 * When calculating the buffer size needed, add a small number
93 * of interfaces to those we counted. We do this to capture
94 * the interface status of potential interfaces which may have
95 * been plumbed between the SIOCGLIFNUM and the SIOCGLIFCONF.
97 needed
= (ifnum
+ 4) * sizeof(struct lifreq
);
98 if (needed
> lastneeded
|| needed
< lastneeded
/ 2) {
100 XFREE(MTYPE_TMP
, buf
);
101 buf
= XMALLOC(MTYPE_TMP
, needed
);
105 lifconf
.lifc_family
= af
;
106 lifconf
.lifc_flags
= LIFC_NOXMIT
;
107 lifconf
.lifc_len
= needed
;
108 lifconf
.lifc_buf
= buf
;
110 frr_with_privs(&zserv_privs
) {
111 ret
= ioctl(sock
, SIOCGLIFCONF
, &lifconf
);
116 goto calculate_lifc_len
;
118 flog_err_sys(EC_LIB_SYSTEM_CALL
, "SIOCGLIFCONF: %s",
119 safe_strerror(errno
));
123 /* Allocate interface. */
124 lifreq
= lifconf
.lifc_req
;
126 for (n
= 0; n
< lifconf
.lifc_len
; n
+= sizeof(struct lifreq
)) {
127 /* we treat Solaris logical interfaces as addresses, because
129 * how PF_ROUTE on Solaris treats them. Hence we can not
131 * the lifreq_name to get the ifp. We need to normalise the
133 * before attempting get.
135 * Solaris logical interface names are in the form of:
136 * <interface name>:<logical interface id>
138 unsigned int normallen
= 0;
141 /* We should exclude ~IFF_UP interfaces, as we'll find out about
143 * coming up later through RTM_NEWADDR message on the route
146 if (if_get_flags_direct(lifreq
->lifr_name
, &lifflags
,
147 lifreq
->lifr_addr
.ss_family
)
148 || !CHECK_FLAG(lifflags
, IFF_UP
)) {
153 /* Find the normalised name */
154 while ((normallen
< sizeof(lifreq
->lifr_name
))
155 && (*(lifreq
->lifr_name
+ normallen
) != '\0')
156 && (*(lifreq
->lifr_name
+ normallen
) != ':'))
159 ifp
= if_get_by_name(lifreq
->lifr_name
, VRF_DEFAULT
);
161 if (lifreq
->lifr_addr
.ss_family
== AF_INET
)
162 ifp
->flags
|= IFF_IPV4
;
164 if (lifreq
->lifr_addr
.ss_family
== AF_INET6
) {
165 ifp
->flags
|= IFF_IPV6
;
170 interface_info_ioctl(ifp
);
172 /* If a logical interface pass the full name so it can be
173 * as a label on the address
175 if (*(lifreq
->lifr_name
+ normallen
) != '\0')
176 if_get_addr(ifp
, (struct sockaddr
*)&lifreq
->lifr_addr
,
179 if_get_addr(ifp
, (struct sockaddr
*)&lifreq
->lifr_addr
,
182 /* Poke the interface flags. Lets IFF_UP mangling kick in */
183 if_flags_update(ifp
, ifp
->flags
);
190 XFREE(MTYPE_TMP
, lifconf
.lifc_buf
);
194 /* Get interface's index by ioctl. */
195 static int if_get_index(struct interface
*ifp
)
198 struct lifreq lifreq
;
200 lifreq_set_name(&lifreq
, ifp
->name
);
202 if (ifp
->flags
& IFF_IPV4
)
203 ret
= AF_IOCTL(AF_INET
, SIOCGLIFINDEX
, (caddr_t
)&lifreq
);
204 else if (ifp
->flags
& IFF_IPV6
)
205 ret
= AF_IOCTL(AF_INET6
, SIOCGLIFINDEX
, (caddr_t
)&lifreq
);
210 flog_err_sys(EC_LIB_SYSTEM_CALL
, "SIOCGLIFINDEX(%s) failed",
215 /* OK we got interface index. */
217 if_set_index(ifp
, lifreq
.lifr_ifindex
);
219 if_set_index(ifp
, lifreq
.lifr_index
);
225 /* Interface address lookup by ioctl. This function only looks up
227 #define ADDRLEN(sa) \
228 (((sa)->sa_family == AF_INET ? sizeof(struct sockaddr_in) \
229 : sizeof(struct sockaddr_in6)))
231 #define SIN(s) ((struct sockaddr_in *)(s))
232 #define SIN6(s) ((struct sockaddr_in6 *)(s))
234 /* Retrieve address information for the given ifp */
235 static int if_get_addr(struct interface
*ifp
, struct sockaddr
*addr
,
239 struct lifreq lifreq
;
240 struct sockaddr_storage mask
, dest
;
241 char *dest_pnt
= NULL
;
242 uint8_t prefixlen
= 0;
246 /* Interface's name and address family.
247 * We need to use the logical interface name / label, if we've been
248 * given one, in order to get the right address
250 strlcpy(lifreq
.lifr_name
, (label
? label
: ifp
->name
),
251 sizeof(lifreq
.lifr_name
));
253 /* Interface's address. */
254 memcpy(&lifreq
.lifr_addr
, addr
, ADDRLEN(addr
));
255 af
= addr
->sa_family
;
257 /* Point to point or broad cast address pointer init. */
260 if (AF_IOCTL(af
, SIOCGLIFDSTADDR
, (caddr_t
)&lifreq
) >= 0) {
261 memcpy(&dest
, &lifreq
.lifr_dstaddr
, ADDRLEN(addr
));
263 dest_pnt
= (char *)&(SIN(&dest
)->sin_addr
);
265 dest_pnt
= (char *)&(SIN6(&dest
)->sin6_addr
);
266 flags
= ZEBRA_IFA_PEER
;
270 ret
= if_ioctl(SIOCGLIFNETMASK
, (caddr_t
)&lifreq
);
273 if (errno
!= EADDRNOTAVAIL
) {
274 flog_err_sys(EC_LIB_SYSTEM_CALL
,
275 "SIOCGLIFNETMASK (%s) fail: %s",
276 ifp
->name
, safe_strerror(errno
));
281 memcpy(&mask
, &lifreq
.lifr_addr
, ADDRLEN(addr
));
283 prefixlen
= ip_masklen(SIN(&mask
)->sin_addr
);
285 && (if_ioctl(SIOCGLIFBRDADDR
, (caddr_t
)&lifreq
) >= 0)) {
286 memcpy(&dest
, &lifreq
.lifr_broadaddr
,
287 sizeof(struct sockaddr_in
));
288 dest_pnt
= (char *)&SIN(&dest
)->sin_addr
;
290 } else if (af
== AF_INET6
) {
291 if (if_ioctl_ipv6(SIOCGLIFSUBNET
, (caddr_t
)&lifreq
) < 0) {
292 if (ifp
->flags
& IFF_POINTOPOINT
)
293 prefixlen
= IPV6_MAX_BITLEN
;
295 flog_err_sys(EC_LIB_SYSTEM_CALL
,
296 "SIOCGLIFSUBNET (%s) fail: %s",
297 ifp
->name
, safe_strerror(errno
));
299 prefixlen
= lifreq
.lifr_addrlen
;
303 /* Set address to the interface. */
305 connected_add_ipv4(ifp
, flags
, &SIN(addr
)->sin_addr
, prefixlen
,
306 (struct in_addr
*)dest_pnt
, label
,
308 else if (af
== AF_INET6
)
309 connected_add_ipv6(ifp
, flags
, &SIN6(addr
)->sin6_addr
, NULL
,
310 prefixlen
, label
, METRIC_MAX
);
315 /* Fetch interface information via ioctl(). */
316 static void interface_info_ioctl(struct interface
*ifp
)
324 /* Lookup all interface information. */
325 void interface_list(struct zebra_ns
*zns
)
327 if (zns
->ns_id
!= NS_DEFAULT
) {
328 zlog_debug("interface_list: ignore NS %u", zns
->ns_id
);
331 interface_list_ioctl(AF_INET
);
332 interface_list_ioctl(AF_INET6
);
333 interface_list_ioctl(AF_UNSPEC
);
336 struct connected
*if_lookup_linklocal(struct interface
*ifp
)
338 struct listnode
*node
;
339 struct connected
*ifc
;
344 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
)) {
345 if ((ifc
->address
->family
== AF_INET6
)
346 && (IN6_IS_ADDR_LINKLOCAL(&ifc
->address
->u
.prefix6
)))