1 /* Kernel communication using routing socket.
2 * Copyright (C) 1999 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <net/if_types.h>
27 #include <netmpls/mpls.h>
32 #include "sockunion.h"
33 #include "connected.h"
41 #include "lib_errors.h"
44 #include "zebra/interface.h"
45 #include "zebra/zebra_router.h"
46 #include "zebra/debug.h"
47 #include "zebra/kernel_socket.h"
48 #include "zebra/rib.h"
49 #include "zebra/zebra_errors.h"
50 #include "zebra/zebra_ptm.h"
52 extern struct zebra_privs_t zserv_privs
;
55 * Historically, the BSD routing socket has aligned data following a
56 * struct sockaddr to sizeof(long), which was 4 bytes on some
57 * platforms, and 8 bytes on others. NetBSD 6 changed the routing
58 * socket to align to sizeof(uint64_t), which is 8 bytes. OS X
59 * appears to align to sizeof(int), which is 4 bytes.
61 * Alignment of zero-sized sockaddrs is nonsensical, but historically
62 * BSD defines RT_ROUNDUP(0) to be the alignment interval (rather than
63 * 0). We follow this practice without questioning it, but it is a
64 * bug if frr calls ROUNDUP with 0.
67 #define ROUNDUP_TYPE int
69 #define ROUNDUP_TYPE long
73 * Because of these varying conventions, the only sane approach is for
74 * the <net/route.h> header to define some flavor of ROUNDUP macro.
77 /* OS X (Xcode as of 2014-12) is known not to define RT_ROUNDUP */
78 #if defined(RT_ROUNDUP)
79 #define ROUNDUP(a) RT_ROUNDUP(a)
80 #endif /* defined(RT_ROUNDUP) */
83 * If ROUNDUP has not yet been defined in terms of platform-provided
84 * defines, attempt to cope with heuristics.
89 * If you're porting to a platform that changed RT_ROUNDUP but doesn't
90 * have it in its headers, this will break rather obviously and you'll
91 * have to fix it here.
94 ((a) > 0 ? (1 + (((a)-1) | (sizeof(ROUNDUP_TYPE) - 1))) \
95 : sizeof(ROUNDUP_TYPE))
97 #endif /* defined(ROUNDUP) */
101 /* SAROUNDUP is the only thing we need, and SA_SIZE provides that */
102 #define SAROUNDUP(a) SA_SIZE(a)
105 * Given a pointer (sockaddr or void *), return the number of bytes
106 * taken up by the sockaddr and any padding needed for alignment.
108 #if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
109 #define SAROUNDUP(X) ROUNDUP(((struct sockaddr *)(X))->sa_len)
112 * One would hope all fixed-size structure definitions are aligned,
113 * but round them up nonetheless.
115 #define SAROUNDUP(X) \
116 (((struct sockaddr *)(X))->sa_family == AF_INET \
117 ? ROUNDUP(sizeof(struct sockaddr_in)) \
118 : (((struct sockaddr *)(X))->sa_family == AF_INET6 \
119 ? ROUNDUP(sizeof(struct sockaddr_in6)) \
120 : (((struct sockaddr *)(X))->sa_family == AF_LINK \
121 ? ROUNDUP(sizeof(struct sockaddr_dl)) \
122 : sizeof(struct sockaddr))))
123 #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
125 #endif /* !SA_SIZE */
127 /* Routing socket message types. */
128 const struct message rtm_type_str
[] = {{RTM_ADD
, "RTM_ADD"},
129 {RTM_DELETE
, "RTM_DELETE"},
130 {RTM_CHANGE
, "RTM_CHANGE"},
131 {RTM_GET
, "RTM_GET"},
132 {RTM_LOSING
, "RTM_LOSING"},
133 {RTM_REDIRECT
, "RTM_REDIRECT"},
134 {RTM_MISS
, "RTM_MISS"},
136 {RTM_LOCK
, "RTM_LOCK"},
137 #endif /* RTM_LOCK */
139 {RTM_OLDADD
, "RTM_OLDADD"},
140 #endif /* RTM_OLDADD */
142 {RTM_OLDDEL
, "RTM_OLDDEL"},
143 #endif /* RTM_OLDDEL */
145 {RTM_RESOLVE
, "RTM_RESOLVE"},
146 #endif /* RTM_RESOLVE */
147 {RTM_NEWADDR
, "RTM_NEWADDR"},
148 {RTM_DELADDR
, "RTM_DELADDR"},
149 {RTM_IFINFO
, "RTM_IFINFO"},
151 {RTM_OIFINFO
, "RTM_OIFINFO"},
152 #endif /* RTM_OIFINFO */
154 {RTM_NEWMADDR
, "RTM_NEWMADDR"},
155 #endif /* RTM_NEWMADDR */
157 {RTM_DELMADDR
, "RTM_DELMADDR"},
158 #endif /* RTM_DELMADDR */
159 #ifdef RTM_IFANNOUNCE
160 {RTM_IFANNOUNCE
, "RTM_IFANNOUNCE"},
161 #endif /* RTM_IFANNOUNCE */
163 {RTM_IEEE80211
, "RTM_IEEE80211"},
167 static const struct message rtm_flag_str
[] = {{RTF_UP
, "UP"},
168 {RTF_GATEWAY
, "GATEWAY"},
170 {RTF_REJECT
, "REJECT"},
171 {RTF_DYNAMIC
, "DYNAMIC"},
172 {RTF_MODIFIED
, "MODIFIED"},
176 #endif /* RTF_MASK */
178 {RTF_CLONING
, "CLONING"},
179 #endif /* RTF_CLONING */
181 {RTF_XRESOLVE
, "XRESOLVE"},
182 #endif /* RTF_XRESOLVE */
184 {RTF_LLINFO
, "LLINFO"},
185 #endif /* RTF_LLINFO */
186 {RTF_STATIC
, "STATIC"},
187 {RTF_BLACKHOLE
, "BLACKHOLE"},
189 {RTF_PRIVATE
, "PRIVATE"},
190 #endif /* RTF_PRIVATE */
191 {RTF_PROTO1
, "PROTO1"},
192 {RTF_PROTO2
, "PROTO2"},
194 {RTF_PRCLONING
, "PRCLONING"},
195 #endif /* RTF_PRCLONING */
197 {RTF_WASCLONED
, "WASCLONED"},
198 #endif /* RTF_WASCLONED */
200 {RTF_PROTO3
, "PROTO3"},
201 #endif /* RTF_PROTO3 */
203 {RTF_PINNED
, "PINNED"},
204 #endif /* RTF_PINNED */
206 {RTF_LOCAL
, "LOCAL"},
207 #endif /* RTF_LOCAL */
209 {RTF_BROADCAST
, "BROADCAST"},
210 #endif /* RTF_BROADCAST */
212 {RTF_MULTICAST
, "MULTICAST"},
213 #endif /* RTF_MULTICAST */
215 {RTF_MULTIRT
, "MULTIRT"},
216 #endif /* RTF_MULTIRT */
218 {RTF_SETSRC
, "SETSRC"},
219 #endif /* RTF_SETSRC */
222 /* Kernel routing update socket. */
223 int routing_sock
= -1;
225 /* Kernel dataplane routing update socket, used in the dataplane pthread
228 int dplane_routing_sock
= -1;
230 /* Yes I'm checking ugly routing socket behavior. */
233 size_t _rta_get(caddr_t sap
, void *destp
, size_t destlen
, bool checkaf
);
234 size_t rta_get(caddr_t sap
, void *dest
, size_t destlen
);
235 size_t rta_getattr(caddr_t sap
, void *destp
, size_t destlen
);
236 size_t rta_getsdlname(caddr_t sap
, void *dest
, short *destlen
);
237 const char *rtatostr(unsigned int flags
, char *buf
, size_t buflen
);
239 /* Supported address family check. */
240 static inline int af_check(int family
)
242 if (family
== AF_INET
)
244 if (family
== AF_INET6
)
249 size_t _rta_get(caddr_t sap
, void *destp
, size_t destlen
, bool checkaf
)
251 struct sockaddr
*sa
= (struct sockaddr
*)sap
;
252 struct sockaddr_dl
*sdl
;
253 uint8_t *dest
= destp
;
254 size_t tlen
, copylen
;
256 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
257 copylen
= sa
->sa_len
;
258 tlen
= (copylen
== 0) ? sizeof(ROUNDUP_TYPE
) : ROUNDUP(copylen
);
259 #else /* !HAVE_STRUCT_SOCKADDR_SA_LEN */
260 copylen
= tlen
= SAROUNDUP(sap
);
261 #endif /* !HAVE_STRUCT_SOCKADDR_SA_LEN */
263 if (copylen
> 0 && dest
!= NULL
) {
264 if (checkaf
&& af_check(sa
->sa_family
) == 0)
267 * Handle sockaddr_dl corner case:
268 * RTA_NETMASK might be AF_LINK, but it doesn't anything
269 * relevant (e.g. zeroed out fields). Check for this
270 * case and avoid warning log message.
272 if (sa
->sa_family
== AF_LINK
) {
273 sdl
= (struct sockaddr_dl
*)sa
;
274 if (sdl
->sdl_index
== 0 || sdl
->sdl_nlen
== 0)
278 if (copylen
> destlen
) {
280 "%s: destination buffer too small (%zu vs %zu)",
281 __func__
, copylen
, destlen
);
282 memcpy(dest
, sap
, destlen
);
284 memcpy(dest
, sap
, copylen
);
290 size_t rta_get(caddr_t sap
, void *destp
, size_t destlen
)
292 return _rta_get(sap
, destp
, destlen
, true);
295 size_t rta_getattr(caddr_t sap
, void *destp
, size_t destlen
)
297 return _rta_get(sap
, destp
, destlen
, false);
300 size_t rta_getsdlname(caddr_t sap
, void *destp
, short *destlen
)
302 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*)sap
;
303 uint8_t *dest
= destp
;
304 size_t tlen
, copylen
;
306 copylen
= sdl
->sdl_nlen
;
307 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
308 struct sockaddr
*sa
= (struct sockaddr
*)sap
;
310 tlen
= (sa
->sa_len
== 0) ? sizeof(ROUNDUP_TYPE
) : ROUNDUP(sa
->sa_len
);
311 #else /* !HAVE_STRUCT_SOCKADDR_SA_LEN */
312 tlen
= SAROUNDUP(sap
);
313 #endif /* !HAVE_STRUCT_SOCKADDR_SA_LEN */
315 if (copylen
> 0 && dest
!= NULL
&& sdl
->sdl_family
== AF_LINK
) {
316 if (copylen
> IFNAMSIZ
) {
318 "%s: destination buffer too small (%zu vs %d)",
319 __func__
, copylen
, IFNAMSIZ
);
320 memcpy(dest
, sdl
->sdl_data
, IFNAMSIZ
);
324 memcpy(dest
, sdl
->sdl_data
, copylen
);
334 const char *rtatostr(unsigned int flags
, char *buf
, size_t buflen
)
336 const char *flagstr
, *bufstart
;
340 /* Hold the pointer to the buffer beginning. */
343 for (bit
= 1; bit
; bit
<<= 1) {
344 if ((flags
& bit
) == 0)
361 #endif /* RTA_GENMASK */
372 #endif /* RTA_AUTHOR */
385 #endif /* RTA_SRCMASK */
390 #endif /* RTA_LABEL */
393 snprintf(ustr
, sizeof(ustr
), "0x%x", bit
);
398 wlen
= snprintf(buf
, buflen
, "%s,", flagstr
);
403 /* Check for empty buffer. */
407 /* Remove the last comma. */
413 /* Dump routing table flag for debug purpose. */
414 static void rtm_flag_dump(int flag
)
416 const struct message
*mes
;
417 static char buf
[BUFSIZ
];
420 for (mes
= rtm_flag_str
; mes
->key
!= 0; mes
++) {
421 if (mes
->key
& flag
) {
422 strlcat(buf
, mes
->str
, BUFSIZ
);
423 strlcat(buf
, " ", BUFSIZ
);
426 zlog_debug("Kernel: %s", buf
);
429 #ifdef RTM_IFANNOUNCE
430 /* Interface adding function */
431 static int ifan_read(struct if_announcemsghdr
*ifan
)
433 struct interface
*ifp
;
435 ifp
= if_lookup_by_index(ifan
->ifan_index
, VRF_DEFAULT
);
438 assert((ifp
->ifindex
== ifan
->ifan_index
)
439 || (ifp
->ifindex
== IFINDEX_INTERNAL
));
441 if ((ifp
== NULL
) || ((ifp
->ifindex
== IFINDEX_INTERNAL
)
442 && (ifan
->ifan_what
== IFAN_ARRIVAL
))) {
443 if (IS_ZEBRA_DEBUG_KERNEL
)
445 "%s: creating interface for ifindex %d, name %s",
446 __func__
, ifan
->ifan_index
, ifan
->ifan_name
);
448 /* Create Interface */
449 ifp
= if_get_by_name(ifan
->ifan_name
, VRF_DEFAULT
,
451 if_set_index(ifp
, ifan
->ifan_index
);
455 } else if (ifp
!= NULL
&& ifan
->ifan_what
== IFAN_DEPARTURE
)
456 if_delete_update(&ifp
);
463 if (IS_ZEBRA_DEBUG_KERNEL
)
464 zlog_debug("%s: interface %s index %d", __func__
,
465 ifan
->ifan_name
, ifan
->ifan_index
);
469 #endif /* RTM_IFANNOUNCE */
471 #ifdef HAVE_BSD_IFI_LINK_STATE
472 /* BSD link detect translation */
473 static void bsd_linkdetect_translate(struct if_msghdr
*ifm
)
475 if ((ifm
->ifm_data
.ifi_link_state
>= LINK_STATE_UP
)
476 || (ifm
->ifm_data
.ifi_link_state
== LINK_STATE_UNKNOWN
))
477 SET_FLAG(ifm
->ifm_flags
, IFF_RUNNING
);
479 UNSET_FLAG(ifm
->ifm_flags
, IFF_RUNNING
);
481 #endif /* HAVE_BSD_IFI_LINK_STATE */
483 static enum zebra_link_type
sdl_to_zebra_link_type(unsigned int sdlt
)
487 return ZEBRA_LLT_ETHER
;
489 return ZEBRA_LLT_X25
;
491 return ZEBRA_LLT_FDDI
;
493 return ZEBRA_LLT_PPP
;
495 return ZEBRA_LLT_LOOPBACK
;
497 return ZEBRA_LLT_SLIP
;
499 return ZEBRA_LLT_ARCNET
;
501 return ZEBRA_LLT_ATM
;
503 return ZEBRA_LLT_LOCALTLK
;
505 return ZEBRA_LLT_HIPPI
;
508 return ZEBRA_LLT_IEEE1394
;
512 return ZEBRA_LLT_UNKNOWN
;
517 * Handle struct if_msghdr obtained from reading routing socket or
518 * sysctl (from interface_list). There may or may not be sockaddrs
519 * present after the header.
521 int ifm_read(struct if_msghdr
*ifm
)
523 struct interface
*ifp
= NULL
;
524 struct sockaddr_dl
*sdl
= NULL
;
525 char ifname
[IFNAMSIZ
];
531 /* terminate ifname at head (for strnlen) and tail (for safety) */
532 ifname
[IFNAMSIZ
- 1] = '\0';
534 /* paranoia: sanity check structure */
535 if (ifm
->ifm_msglen
< sizeof(struct if_msghdr
)) {
536 flog_err(EC_ZEBRA_NETLINK_LENGTH_ERROR
,
537 "ifm_read: ifm->ifm_msglen %d too short",
543 * Check for a sockaddr_dl following the message. First, point to
544 * where a socakddr might be if one follows the message.
546 cp
= (void *)(ifm
+ 1);
548 /* Look up for RTA_IFP and skip others. */
549 for (maskbit
= 1; maskbit
; maskbit
<<= 1) {
550 if ((maskbit
& ifm
->ifm_addrs
) == 0)
552 if (maskbit
!= RTA_IFP
) {
553 cp
+= rta_get(cp
, NULL
, 0);
557 /* Save the pointer to the structure. */
558 sdl
= (struct sockaddr_dl
*)cp
;
559 cp
+= rta_getsdlname(cp
, ifname
, &ifnlen
);
562 if (IS_ZEBRA_DEBUG_KERNEL
)
563 zlog_debug("%s: sdl ifname %s addrs {%s}", __func__
,
564 (ifnlen
? ifname
: "(nil)"),
565 rtatostr(ifm
->ifm_addrs
, fbuf
, sizeof(fbuf
)));
568 * Look up on ifindex first, because ifindices are the primary handle
570 * interfaces across the user/kernel boundary, for most systems. (Some
571 * messages, such as up/down status changes on NetBSD, do not include a
574 if ((ifp
= if_lookup_by_index(ifm
->ifm_index
, VRF_DEFAULT
)) != NULL
) {
575 /* we have an ifp, verify that the name matches as some systems,
576 * eg Solaris, have a 1:many association of ifindex:ifname
577 * if they dont match, we dont have the correct ifp and should
578 * set it back to NULL to let next check do lookup by name
580 if (ifnlen
&& (strncmp(ifp
->name
, ifname
, IFNAMSIZ
) != 0)) {
581 if (IS_ZEBRA_DEBUG_KERNEL
)
583 "%s: ifp name %s doesn't match sdl name %s",
584 __func__
, ifp
->name
, ifname
);
590 * If we dont have an ifp, try looking up by name. Particularly as some
591 * systems (Solaris) have a 1:many mapping of ifindex:ifname - the
593 * is therefore our unique handle to that interface.
595 * Interfaces specified in the configuration file for which the ifindex
596 * has not been determined will have ifindex == IFINDEX_INTERNAL, and
598 * interfaces are found by this search, and then their ifindex values
602 if ((ifp
== NULL
) && ifnlen
)
603 ifp
= if_lookup_by_name(ifname
, VRF_DEFAULT
);
606 * If ifp still does not exist or has an invalid index
607 * (IFINDEX_INTERNAL),
608 * create or fill in an interface.
610 if ((ifp
== NULL
) || (ifp
->ifindex
== IFINDEX_INTERNAL
)) {
612 * To create or fill in an interface, a sockaddr_dl (via
613 * RTA_IFP) is required.
616 zlog_debug("Interface index %d (new) missing ifname",
621 #ifndef RTM_IFANNOUNCE
622 /* Down->Down interface should be ignored here.
623 * See further comment below.
625 if (!CHECK_FLAG(ifm
->ifm_flags
, IFF_UP
))
627 #endif /* !RTM_IFANNOUNCE */
630 /* Interface that zebra was not previously aware of, so
632 ifp
= if_get_by_name(ifname
, VRF_DEFAULT
,
634 if (IS_ZEBRA_DEBUG_KERNEL
)
635 zlog_debug("%s: creating ifp for ifindex %d",
636 __func__
, ifm
->ifm_index
);
639 if (IS_ZEBRA_DEBUG_KERNEL
)
641 "%s: updated/created ifp, ifname %s, ifindex %d",
642 __func__
, ifp
->name
, ifp
->ifindex
);
644 * Fill in newly created interface structure, or larval
645 * structure with ifindex IFINDEX_INTERNAL.
647 if_set_index(ifp
, ifm
->ifm_index
);
649 #ifdef HAVE_BSD_IFI_LINK_STATE /* translate BSD kernel msg for link-state */
650 bsd_linkdetect_translate(ifm
);
651 #endif /* HAVE_BSD_IFI_LINK_STATE */
653 if_flags_update(ifp
, ifm
->ifm_flags
);
654 #if defined(__bsdi__)
658 #endif /* __bsdi__ */
662 * XXX sockaddr_dl contents can be larger than the structure
663 * definition. There are 2 big families here:
664 * - BSD has sdl_len + sdl_data[16] + overruns sdl_data
665 * we MUST use sdl_len here or we'll truncate data.
666 * - Solaris has no sdl_len, but sdl_data[244]
667 * presumably, it's not going to run past that, so sizeof()
669 * a nonzero ifnlen from rta_getsdlname() means sdl is valid
671 ifp
->ll_type
= ZEBRA_LLT_UNKNOWN
;
672 ifp
->hw_addr_len
= 0;
674 #ifdef HAVE_STRUCT_SOCKADDR_DL_SDL_LEN
675 memcpy(&((struct zebra_if
*)ifp
->info
)->sdl
, sdl
,
678 memcpy(&((struct zebra_if
*)ifp
->info
)->sdl
, sdl
,
679 sizeof(struct sockaddr_dl
));
680 #endif /* HAVE_STRUCT_SOCKADDR_DL_SDL_LEN */
682 ifp
->ll_type
= sdl_to_zebra_link_type(sdl
->sdl_type
);
683 if (sdl
->sdl_alen
<= sizeof(ifp
->hw_addr
)) {
684 memcpy(ifp
->hw_addr
, LLADDR(sdl
),
686 ifp
->hw_addr_len
= sdl
->sdl_alen
;
693 * Interface structure exists. Adjust stored flags from
694 * notification. If interface has up->down or down->up
695 * transition, call state change routines (to adjust routes,
696 * notify routing daemons, etc.). (Other flag changes are stored
697 * but apparently do not trigger action.)
700 if (ifp
->ifindex
!= ifm
->ifm_index
) {
702 "%s: index mismatch, ifname %s, ifp index %d, ifm index %d",
703 __func__
, ifp
->name
, ifp
->ifindex
,
708 #ifdef HAVE_BSD_IFI_LINK_STATE /* translate BSD kernel msg for link-state */
709 bsd_linkdetect_translate(ifm
);
710 #endif /* HAVE_BSD_IFI_LINK_STATE */
712 /* update flags and handle operative->inoperative transition, if
714 if_flags_update(ifp
, ifm
->ifm_flags
);
716 #ifndef RTM_IFANNOUNCE
717 if (!if_is_up(ifp
)) {
718 /* No RTM_IFANNOUNCE on this platform, so we can never
719 * distinguish between ~IFF_UP and delete. We must
721 * it has been deleted.
722 * Eg, Solaris will not notify us of unplumb.
724 * XXX: Fixme - this should be runtime detected
725 * So that a binary compiled on a system with IFANNOUNCE
726 * will still behave correctly if run on a platform
729 if_delete_update(&ifp
);
731 #endif /* RTM_IFANNOUNCE */
732 if (ifp
&& if_is_up(ifp
)) {
733 #if defined(__bsdi__)
737 #endif /* __bsdi__ */
743 #ifdef HAVE_NET_RT_IFLIST
744 ifp
->stats
= ifm
->ifm_data
;
745 #endif /* HAVE_NET_RT_IFLIST */
746 ifp
->speed
= ifm
->ifm_data
.ifi_baudrate
/ 1000000;
748 if (IS_ZEBRA_DEBUG_KERNEL
)
749 zlog_debug("%s: interface %s index %d", __func__
,
750 ifp
->name
, ifp
->ifindex
);
756 /* Address read from struct ifa_msghdr. */
757 static void ifam_read_mesg(struct ifa_msghdr
*ifm
, union sockunion
*addr
,
758 union sockunion
*mask
, union sockunion
*brd
,
759 char *ifname
, short *ifnlen
)
763 union sockunion gateway
;
767 pnt
= (caddr_t
)(ifm
+ 1);
768 end
= ((caddr_t
)ifm
) + ifm
->ifam_msglen
;
770 /* Be sure structure is cleared */
771 memset(mask
, 0, sizeof(union sockunion
));
772 memset(addr
, 0, sizeof(union sockunion
));
773 memset(brd
, 0, sizeof(union sockunion
));
774 memset(&dst
, 0, sizeof(union sockunion
));
775 memset(&gateway
, 0, sizeof(union sockunion
));
777 /* We fetch each socket variable into sockunion. */
778 for (maskbit
= 1; maskbit
; maskbit
<<= 1) {
779 if ((maskbit
& ifm
->ifam_addrs
) == 0)
784 pnt
+= rta_get(pnt
, &dst
, sizeof(dst
));
787 pnt
+= rta_get(pnt
, &gateway
, sizeof(gateway
));
790 pnt
+= rta_getattr(pnt
, mask
, sizeof(*mask
));
793 pnt
+= rta_getsdlname(pnt
, ifname
, ifnlen
);
796 pnt
+= rta_get(pnt
, addr
, sizeof(*addr
));
799 pnt
+= rta_get(pnt
, brd
, sizeof(*brd
));
803 pnt
+= rta_get(pnt
, NULL
, 0);
808 zlog_warn("%s: overflow detected (pnt:%p end:%p)",
814 if (IS_ZEBRA_DEBUG_KERNEL
) {
815 switch (sockunion_family(addr
)) {
819 (sockunion_family(addr
) == AF_INET
)
820 ? ip_masklen(mask
->sin
.sin_addr
)
821 : ip6_masklen(mask
->sin6
.sin6_addr
);
823 "%s: ifindex %d, ifname %s, ifam_addrs {%s}, ifam_flags 0x%x, addr %pSU/%d broad %pSU dst %pSU gateway %pSU",
824 __func__
, ifm
->ifam_index
,
825 (ifnlen
? ifname
: "(nil)"),
826 rtatostr(ifm
->ifam_addrs
, fbuf
, sizeof(fbuf
)),
827 ifm
->ifam_flags
, addr
, masklen
, brd
, &dst
,
831 zlog_debug("%s: ifindex %d, ifname %s, ifam_addrs {%s}",
832 __func__
, ifm
->ifam_index
,
833 (ifnlen
? ifname
: "(nil)"),
834 rtatostr(ifm
->ifam_addrs
, fbuf
,
840 /* Assert read up end point matches to end point */
841 pnt
= (caddr_t
)ROUNDUP((size_t)pnt
);
842 if (pnt
!= (caddr_t
)ROUNDUP((size_t)end
))
843 zlog_debug("ifam_read() doesn't read all socket data");
846 /* Interface's address information get. */
847 int ifam_read(struct ifa_msghdr
*ifam
)
849 struct interface
*ifp
= NULL
;
850 union sockunion addr
, mask
, brd
;
851 bool dest_same
= false;
852 char ifname
[INTERFACE_NAMSIZ
];
854 bool isalias
= false;
857 ifname
[0] = ifname
[INTERFACE_NAMSIZ
- 1] = '\0';
859 /* Allocate and read address information. */
860 ifam_read_mesg(ifam
, &addr
, &mask
, &brd
, ifname
, &ifnlen
);
862 if ((ifp
= if_lookup_by_index(ifam
->ifam_index
, VRF_DEFAULT
)) == NULL
) {
863 flog_warn(EC_ZEBRA_UNKNOWN_INTERFACE
,
864 "%s: no interface for ifname %s, index %d", __func__
,
865 ifname
, ifam
->ifam_index
);
869 if (ifnlen
&& strncmp(ifp
->name
, ifname
, INTERFACE_NAMSIZ
))
873 * Mark the alias prefixes as secondary
876 SET_FLAG(flags
, ZEBRA_IFA_SECONDARY
);
878 /* N.B. The info in ifa_msghdr does not tell us whether the RTA_BRD
879 field contains a broadcast address or a peer address, so we are
881 rely upon the interface type. */
882 if (if_is_pointopoint(ifp
))
883 SET_FLAG(flags
, ZEBRA_IFA_PEER
);
885 if (memcmp(&addr
, &brd
, sizeof(addr
)) == 0)
890 /* it might seem cute to grab the interface metric here, however
891 * we're processing an address update message, and so some systems
892 * (e.g. FBSD) dont bother to fill in ifam_metric. Disabled, but left
893 * in deliberately, as comment.
895 ifp
->metric
= ifam
->ifam_metric
;
898 /* Add connected address. */
899 switch (sockunion_family(&addr
)) {
901 if (ifam
->ifam_type
== RTM_NEWADDR
)
902 connected_add_ipv4(ifp
, flags
, &addr
.sin
.sin_addr
,
903 ip_masklen(mask
.sin
.sin_addr
),
904 dest_same
? NULL
: &brd
.sin
.sin_addr
,
905 (isalias
? ifname
: NULL
),
908 connected_delete_ipv4(ifp
, flags
, &addr
.sin
.sin_addr
,
909 ip_masklen(mask
.sin
.sin_addr
),
911 : &brd
.sin
.sin_addr
);
914 /* Unset interface index from link-local address when IPv6 stack
916 if (IN6_IS_ADDR_LINKLOCAL(&addr
.sin6
.sin6_addr
)) {
917 SET_IN6_LINKLOCAL_IFINDEX(addr
.sin6
.sin6_addr
, 0);
920 if (ifam
->ifam_type
== RTM_NEWADDR
)
921 connected_add_ipv6(ifp
, flags
, &addr
.sin6
.sin6_addr
,
923 ip6_masklen(mask
.sin6
.sin6_addr
),
924 (isalias
? ifname
: NULL
),
927 connected_delete_ipv6(ifp
, &addr
.sin6
.sin6_addr
, NULL
,
928 ip6_masklen(mask
.sin6
.sin6_addr
));
931 /* Unsupported family silently ignore... */
935 /* Check interface flag for implicit up of the interface. */
941 /* Interface function for reading kernel routing table information. */
942 static int rtm_read_mesg(struct rt_msghdr
*rtm
, union sockunion
*dest
,
943 union sockunion
*mask
, union sockunion
*gate
,
944 char *ifname
, short *ifnlen
)
949 /* Pnt points out socket data start point. */
950 pnt
= (caddr_t
)(rtm
+ 1);
951 end
= ((caddr_t
)rtm
) + rtm
->rtm_msglen
;
953 /* rt_msghdr version check. */
954 if (rtm
->rtm_version
!= RTM_VERSION
)
955 flog_warn(EC_ZEBRA_RTM_VERSION_MISMATCH
,
956 "Routing message version different %d should be %d.This may cause problem",
957 rtm
->rtm_version
, RTM_VERSION
);
959 /* Be sure structure is cleared */
960 memset(dest
, 0, sizeof(union sockunion
));
961 memset(gate
, 0, sizeof(union sockunion
));
962 memset(mask
, 0, sizeof(union sockunion
));
964 /* We fetch each socket variable into sockunion. */
965 /* We fetch each socket variable into sockunion. */
966 for (maskbit
= 1; maskbit
; maskbit
<<= 1) {
967 if ((maskbit
& rtm
->rtm_addrs
) == 0)
972 pnt
+= rta_get(pnt
, dest
, sizeof(*dest
));
975 pnt
+= rta_get(pnt
, gate
, sizeof(*gate
));
978 pnt
+= rta_getattr(pnt
, mask
, sizeof(*mask
));
981 pnt
+= rta_getsdlname(pnt
, ifname
, ifnlen
);
985 pnt
+= rta_get(pnt
, NULL
, 0);
990 zlog_warn("%s: overflow detected (pnt:%p end:%p)",
996 /* If there is netmask information set it's family same as
998 if (rtm
->rtm_addrs
& RTA_NETMASK
)
999 mask
->sa
.sa_family
= dest
->sa
.sa_family
;
1001 /* Assert read up to the end of pointer. */
1003 zlog_debug("rtm_read() doesn't read all socket data.");
1005 return rtm
->rtm_flags
;
1008 void rtm_read(struct rt_msghdr
*rtm
)
1011 uint32_t zebra_flags
;
1012 union sockunion dest
, mask
, gate
;
1013 char ifname
[INTERFACE_NAMSIZ
+ 1];
1017 ifindex_t ifindex
= 0;
1020 int32_t proto
= ZEBRA_ROUTE_KERNEL
;
1021 uint8_t distance
= 0;
1025 /* Read destination and netmask and gateway from rtm message
1027 flags
= rtm_read_mesg(rtm
, &dest
, &mask
, &gate
, ifname
, &ifnlen
);
1028 if (!(flags
& RTF_DONE
))
1030 if (IS_ZEBRA_DEBUG_KERNEL
)
1031 zlog_debug("%s: got rtm of type %d (%s) addrs {%s}", __func__
,
1033 lookup_msg(rtm_type_str
, rtm
->rtm_type
, NULL
),
1034 rtatostr(rtm
->rtm_addrs
, fbuf
, sizeof(fbuf
)));
1036 #ifdef RTF_CLONED /*bsdi, netbsd 1.6*/
1037 if (flags
& RTF_CLONED
)
1040 #ifdef RTF_WASCLONED /*freebsd*/
1041 if (flags
& RTF_WASCLONED
)
1045 if ((rtm
->rtm_type
== RTM_ADD
|| rtm
->rtm_type
== RTM_CHANGE
)
1046 && !(flags
& RTF_UP
))
1049 /* This is connected route. */
1050 if (!(flags
& RTF_GATEWAY
))
1053 if (flags
& RTF_PROTO1
) {
1054 SET_FLAG(zebra_flags
, ZEBRA_FLAG_SELFROUTE
);
1055 proto
= ZEBRA_ROUTE_STATIC
;
1059 memset(&nh
, 0, sizeof(nh
));
1061 nh
.vrf_id
= VRF_DEFAULT
;
1062 /* This is a reject or blackhole route */
1063 if (flags
& RTF_REJECT
) {
1064 nh
.type
= NEXTHOP_TYPE_BLACKHOLE
;
1065 nh
.bh_type
= BLACKHOLE_REJECT
;
1066 } else if (flags
& RTF_BLACKHOLE
) {
1067 nh
.type
= NEXTHOP_TYPE_BLACKHOLE
;
1068 nh
.bh_type
= BLACKHOLE_NULL
;
1072 * Ignore our own messages.
1074 if (rtm
->rtm_type
!= RTM_GET
&& rtm
->rtm_pid
== pid
)
1077 if (dest
.sa
.sa_family
== AF_INET
) {
1080 p
.u
.prefix4
= dest
.sin
.sin_addr
;
1081 if (flags
& RTF_HOST
)
1082 p
.prefixlen
= IPV4_MAX_BITLEN
;
1084 p
.prefixlen
= ip_masklen(mask
.sin
.sin_addr
);
1087 nh
.type
= NEXTHOP_TYPE_IPV4
;
1088 nh
.gate
.ipv4
= gate
.sin
.sin_addr
;
1090 } else if (dest
.sa
.sa_family
== AF_INET6
) {
1092 p
.family
= AF_INET6
;
1093 p
.u
.prefix6
= dest
.sin6
.sin6_addr
;
1094 if (flags
& RTF_HOST
)
1095 p
.prefixlen
= IPV6_MAX_BITLEN
;
1097 p
.prefixlen
= ip6_masklen(mask
.sin6
.sin6_addr
);
1100 if (IN6_IS_ADDR_LINKLOCAL(&gate
.sin6
.sin6_addr
)) {
1101 ifindex
= IN6_LINKLOCAL_IFINDEX(gate
.sin6
.sin6_addr
);
1102 SET_IN6_LINKLOCAL_IFINDEX(gate
.sin6
.sin6_addr
, 0);
1107 nh
.type
= ifindex
? NEXTHOP_TYPE_IPV6_IFINDEX
1108 : NEXTHOP_TYPE_IPV6
;
1109 nh
.gate
.ipv6
= gate
.sin6
.sin6_addr
;
1110 nh
.ifindex
= ifindex
;
1116 * CHANGE: delete the old prefix, we have no further information
1117 * to specify the route really
1119 if (rtm
->rtm_type
== RTM_CHANGE
)
1120 rib_delete(afi
, SAFI_UNICAST
, VRF_DEFAULT
, ZEBRA_ROUTE_KERNEL
,
1121 0, zebra_flags
, &p
, NULL
, NULL
, 0, RT_TABLE_MAIN
, 0,
1123 if (rtm
->rtm_type
== RTM_GET
|| rtm
->rtm_type
== RTM_ADD
1124 || rtm
->rtm_type
== RTM_CHANGE
)
1125 rib_add(afi
, SAFI_UNICAST
, VRF_DEFAULT
, proto
, 0, zebra_flags
,
1126 &p
, NULL
, &nh
, 0, RT_TABLE_MAIN
, 0, 0, distance
, 0,
1129 rib_delete(afi
, SAFI_UNICAST
, VRF_DEFAULT
, proto
, 0,
1130 zebra_flags
, &p
, NULL
, &nh
, 0, RT_TABLE_MAIN
, 0,
1134 /* Interface function for the kernel routing table updates. Support
1135 * for RTM_CHANGE will be needed.
1136 * Exported only for rt_socket.c
1138 int rtm_write(int message
, union sockunion
*dest
, union sockunion
*mask
,
1139 union sockunion
*gate
, union sockunion
*mpls
, unsigned int index
,
1140 enum blackhole_type bh_type
, int metric
)
1144 struct interface
*ifp
;
1146 /* Sequencial number of routing message. */
1147 static int msg_seq
= 0;
1149 /* Struct of rt_msghdr and buffer for storing socket's data. */
1151 struct rt_msghdr rtm
;
1155 if (dplane_routing_sock
< 0)
1156 return ZEBRA_ERR_EPERM
;
1158 /* Clear and set rt_msghdr values */
1159 memset(&msg
, 0, sizeof(msg
));
1160 msg
.rtm
.rtm_version
= RTM_VERSION
;
1161 msg
.rtm
.rtm_type
= message
;
1162 msg
.rtm
.rtm_seq
= msg_seq
++;
1163 msg
.rtm
.rtm_addrs
= RTA_DST
;
1164 msg
.rtm
.rtm_addrs
|= RTA_GATEWAY
;
1165 msg
.rtm
.rtm_flags
= RTF_UP
;
1167 msg
.rtm
.rtm_flags
|= RTF_MPATH
;
1168 msg
.rtm
.rtm_fmask
= RTF_MPLS
;
1170 msg
.rtm
.rtm_index
= index
;
1173 msg
.rtm
.rtm_rmx
.rmx_hopcount
= metric
;
1174 msg
.rtm
.rtm_inits
|= RTV_HOPCOUNT
;
1177 ifp
= if_lookup_by_index(index
, VRF_DEFAULT
);
1179 if (gate
&& (message
== RTM_ADD
|| message
== RTM_CHANGE
))
1180 msg
.rtm
.rtm_flags
|= RTF_GATEWAY
;
1182 /* When RTF_CLONING is unavailable on BSD, should we set some
1183 * other flag instead?
1186 if (!gate
&& (message
== RTM_ADD
|| message
== RTM_CHANGE
) && ifp
1187 && (ifp
->flags
& IFF_POINTOPOINT
) == 0)
1188 msg
.rtm
.rtm_flags
|= RTF_CLONING
;
1189 #endif /* RTF_CLONING */
1191 /* If no protocol specific gateway is specified, use link
1192 address for gateway. */
1195 char dest_buf
[INET_ADDRSTRLEN
] = "NULL",
1196 mask_buf
[INET_ADDRSTRLEN
] = "255.255.255.255";
1198 inet_ntop(AF_INET
, &dest
->sin
.sin_addr
,
1199 dest_buf
, INET_ADDRSTRLEN
);
1201 inet_ntop(AF_INET
, &mask
->sin
.sin_addr
,
1202 mask_buf
, INET_ADDRSTRLEN
);
1204 EC_ZEBRA_RTM_NO_GATEWAY
,
1205 "%s: %s/%s: gate == NULL and no gateway found for ifindex %d",
1206 __func__
, dest_buf
, mask_buf
, index
);
1209 gate
= (union sockunion
*)&((struct zebra_if
*)ifp
->info
)->sdl
;
1213 msg
.rtm
.rtm_addrs
|= RTA_NETMASK
;
1214 else if (message
== RTM_ADD
|| message
== RTM_CHANGE
)
1215 msg
.rtm
.rtm_flags
|= RTF_HOST
;
1219 msg
.rtm
.rtm_addrs
|= RTA_SRC
;
1220 msg
.rtm
.rtm_flags
|= RTF_MPLS
;
1222 if (mpls
->smpls
.smpls_label
1223 != htonl(MPLS_LABEL_IMPLICIT_NULL
<< MPLS_LABEL_OFFSET
))
1224 msg
.rtm
.rtm_mpls
= MPLS_OP_PUSH
;
1228 /* Tagging route with flags */
1229 msg
.rtm
.rtm_flags
|= (RTF_PROTO1
);
1232 case BLACKHOLE_UNSPEC
:
1234 case BLACKHOLE_REJECT
:
1235 msg
.rtm
.rtm_flags
|= RTF_REJECT
;
1238 msg
.rtm
.rtm_flags
|= RTF_BLACKHOLE
;
1243 #define SOCKADDRSET(X, R) \
1244 if (msg.rtm.rtm_addrs & (R)) { \
1245 int len = SAROUNDUP(X); \
1246 memcpy(pnt, (caddr_t)(X), len); \
1250 pnt
= (caddr_t
)msg
.buf
;
1252 /* Write each socket data into rtm message buffer */
1253 SOCKADDRSET(dest
, RTA_DST
);
1254 SOCKADDRSET(gate
, RTA_GATEWAY
);
1255 SOCKADDRSET(mask
, RTA_NETMASK
);
1257 SOCKADDRSET(mpls
, RTA_SRC
);
1260 msg
.rtm
.rtm_msglen
= pnt
- (caddr_t
)&msg
;
1262 ret
= write(dplane_routing_sock
, &msg
, msg
.rtm
.rtm_msglen
);
1264 if (ret
!= msg
.rtm
.rtm_msglen
) {
1265 if (errno
== EEXIST
)
1266 return ZEBRA_ERR_RTEXIST
;
1267 if (errno
== ENETUNREACH
)
1268 return ZEBRA_ERR_RTUNREACH
;
1270 return ZEBRA_ERR_RTNOEXIST
;
1272 flog_err_sys(EC_LIB_SOCKET
, "%s: write : %s (%d)", __func__
,
1273 safe_strerror(errno
), errno
);
1274 return ZEBRA_ERR_KERNEL
;
1276 return ZEBRA_ERR_NOERROR
;
1281 #include "zebra/zserv.h"
1283 /* For debug purpose. */
1284 static void rtmsg_debug(struct rt_msghdr
*rtm
)
1288 zlog_debug("Kernel: Len: %d Type: %s", rtm
->rtm_msglen
,
1289 lookup_msg(rtm_type_str
, rtm
->rtm_type
, NULL
));
1290 rtm_flag_dump(rtm
->rtm_flags
);
1291 zlog_debug("Kernel: message seq %d", rtm
->rtm_seq
);
1292 zlog_debug("Kernel: pid %lld, rtm_addrs {%s}", (long long)rtm
->rtm_pid
,
1293 rtatostr(rtm
->rtm_addrs
, fbuf
, sizeof(fbuf
)));
1296 /* This is pretty gross, better suggestions welcome -- mhandler */
1299 #define RTAX_MAX RTA_NUMBITS
1302 #endif /* RTA_NUMBITS */
1303 #endif /* RTAX_MAX */
1305 /* Kernel routing table and interface updates via routing socket. */
1306 static void kernel_read(struct thread
*thread
)
1310 struct rt_msghdr
*rtm
;
1313 * This must be big enough for any message the kernel might send.
1314 * Rather than determining how many sockaddrs of what size might be
1315 * in each particular message, just use RTAX_MAX of sockaddr_storage
1316 * for each. Note that the sockaddrs must be after each message
1317 * definition, or rather after whichever happens to be the largest,
1318 * since the buffer needs to be big enough for a message and the
1319 * sockaddrs together.
1322 /* Routing information. */
1324 struct rt_msghdr rtm
;
1325 struct sockaddr_storage addr
[RTAX_MAX
];
1328 /* Interface information. */
1330 struct if_msghdr ifm
;
1331 struct sockaddr_storage addr
[RTAX_MAX
];
1334 /* Interface address information. */
1336 struct ifa_msghdr ifa
;
1337 struct sockaddr_storage addr
[RTAX_MAX
];
1340 #ifdef RTM_IFANNOUNCE
1341 /* Interface arrival/departure */
1343 struct if_announcemsghdr ifan
;
1344 struct sockaddr_storage addr
[RTAX_MAX
];
1346 #endif /* RTM_IFANNOUNCE */
1350 /* Fetch routing socket. */
1351 sock
= THREAD_FD(thread
);
1353 nbytes
= read(sock
, &buf
, sizeof(buf
));
1356 if (errno
== ENOBUFS
) {
1359 * ENOBUFS indicates a temporary resource
1360 * shortage and is not harmful for consistency of
1361 * reading the routing socket. Ignore it.
1363 thread_add_read(zrouter
.master
, kernel_read
, NULL
, sock
,
1367 flog_err(EC_ZEBRA_RECVMSG_OVERRUN
,
1368 "routing socket overrun: %s",
1369 safe_strerror(errno
));
1371 * In this case we are screwed.
1372 * There is no good way to
1373 * recover zebra at this point.
1378 if (errno
!= EAGAIN
&& errno
!= EWOULDBLOCK
)
1379 flog_err_sys(EC_LIB_SOCKET
, "routing socket error: %s",
1380 safe_strerror(errno
));
1387 thread_add_read(zrouter
.master
, kernel_read
, NULL
, sock
, NULL
);
1389 if (IS_ZEBRA_DEBUG_KERNEL
)
1390 rtmsg_debug(&buf
.r
.rtm
);
1395 * Ensure that we didn't drop any data, so that processing routines
1396 * can assume they have the whole message.
1398 if (rtm
->rtm_msglen
!= nbytes
) {
1400 "kernel_read: rtm->rtm_msglen %d, nbytes %d, type %d",
1401 rtm
->rtm_msglen
, nbytes
, rtm
->rtm_type
);
1405 switch (rtm
->rtm_type
) {
1412 ifm_read(&buf
.im
.ifm
);
1416 ifam_read(&buf
.ia
.ifa
);
1418 #ifdef RTM_IFANNOUNCE
1419 case RTM_IFANNOUNCE
:
1420 ifan_read(&buf
.ian
.ifan
);
1422 #endif /* RTM_IFANNOUNCE */
1424 if (IS_ZEBRA_DEBUG_KERNEL
)
1426 "Unprocessed RTM_type: %s(%d)",
1427 lookup_msg(rtm_type_str
, rtm
->rtm_type
, NULL
),
1433 /* Make routing socket. */
1434 static void routing_socket(struct zebra_ns
*zns
)
1436 uint32_t default_rcvbuf
;
1439 frr_with_privs(&zserv_privs
) {
1440 routing_sock
= ns_socket(AF_ROUTE
, SOCK_RAW
, 0, zns
->ns_id
);
1442 dplane_routing_sock
=
1443 ns_socket(AF_ROUTE
, SOCK_RAW
, 0, zns
->ns_id
);
1446 if (routing_sock
< 0) {
1447 flog_err_sys(EC_LIB_SOCKET
, "Can't init kernel routing socket");
1451 if (dplane_routing_sock
< 0) {
1452 flog_err_sys(EC_LIB_SOCKET
,
1453 "Can't init kernel dataplane routing socket");
1458 /* Allow reporting of route(4) buffer overflow errors */
1461 if (setsockopt(routing_sock
, SOL_SOCKET
, SO_RERROR
, &n
, sizeof(n
)) < 0)
1462 flog_err_sys(EC_LIB_SOCKET
,
1463 "Can't set SO_RERROR on routing socket");
1466 /* XXX: Socket should be NONBLOCK, however as we currently
1467 * discard failed writes, this will lead to inconsistencies.
1468 * For now, socket must be blocking.
1470 /*if (fcntl (routing_sock, F_SETFL, O_NONBLOCK) < 0)
1471 zlog_warn ("Can't set O_NONBLOCK to routing socket");*/
1474 * Attempt to set a more useful receive buffer size
1476 optlen
= sizeof(default_rcvbuf
);
1477 if (getsockopt(routing_sock
, SOL_SOCKET
, SO_RCVBUF
, &default_rcvbuf
,
1479 flog_err_sys(EC_LIB_SOCKET
,
1480 "routing_sock sockopt SOL_SOCKET SO_RCVBUF");
1482 for (; rcvbufsize
> default_rcvbuf
&&
1483 setsockopt(routing_sock
, SOL_SOCKET
, SO_RCVBUF
,
1484 &rcvbufsize
, sizeof(rcvbufsize
)) == -1 &&
1490 /* kernel_read needs rewrite. */
1491 thread_add_read(zrouter
.master
, kernel_read
, NULL
, routing_sock
, NULL
);
1494 /* Exported interface function. This function simply calls
1495 routing_socket (). */
1496 void kernel_init(struct zebra_ns
*zns
)
1498 routing_socket(zns
);
1501 void kernel_terminate(struct zebra_ns
*zns
, bool complete
)
1507 * Global init for platform-/OS-specific things
1509 void kernel_router_init(void)
1514 * Global deinit for platform-/OS-specific things
1516 void kernel_router_terminate(void)
1521 * Called by the dplane pthread to read incoming OS messages and dispatch them.
1523 int kernel_dplane_read(struct zebra_dplane_info
*info
)
1528 void kernel_update_multi(struct dplane_ctx_q
*ctx_list
)
1530 struct zebra_dplane_ctx
*ctx
;
1531 struct dplane_ctx_q handled_list
;
1532 enum zebra_dplane_result res
;
1534 TAILQ_INIT(&handled_list
);
1537 ctx
= dplane_ctx_dequeue(ctx_list
);
1542 * A previous provider plugin may have asked to skip the
1545 if (dplane_ctx_is_skip_kernel(ctx
)) {
1546 res
= ZEBRA_DPLANE_REQUEST_SUCCESS
;
1550 switch (dplane_ctx_get_op(ctx
)) {
1552 case DPLANE_OP_ROUTE_INSTALL
:
1553 case DPLANE_OP_ROUTE_UPDATE
:
1554 case DPLANE_OP_ROUTE_DELETE
:
1555 res
= kernel_route_update(ctx
);
1558 case DPLANE_OP_NH_INSTALL
:
1559 case DPLANE_OP_NH_UPDATE
:
1560 case DPLANE_OP_NH_DELETE
:
1561 res
= kernel_nexthop_update(ctx
);
1564 case DPLANE_OP_LSP_INSTALL
:
1565 case DPLANE_OP_LSP_UPDATE
:
1566 case DPLANE_OP_LSP_DELETE
:
1567 res
= kernel_lsp_update(ctx
);
1570 case DPLANE_OP_PW_INSTALL
:
1571 case DPLANE_OP_PW_UNINSTALL
:
1572 res
= kernel_pw_update(ctx
);
1575 case DPLANE_OP_ADDR_INSTALL
:
1576 case DPLANE_OP_ADDR_UNINSTALL
:
1577 res
= kernel_address_update_ctx(ctx
);
1580 case DPLANE_OP_MAC_INSTALL
:
1581 case DPLANE_OP_MAC_DELETE
:
1582 res
= kernel_mac_update_ctx(ctx
);
1585 case DPLANE_OP_NEIGH_INSTALL
:
1586 case DPLANE_OP_NEIGH_UPDATE
:
1587 case DPLANE_OP_NEIGH_DELETE
:
1588 case DPLANE_OP_VTEP_ADD
:
1589 case DPLANE_OP_VTEP_DELETE
:
1590 case DPLANE_OP_NEIGH_DISCOVER
:
1591 res
= kernel_neigh_update_ctx(ctx
);
1594 case DPLANE_OP_RULE_ADD
:
1595 case DPLANE_OP_RULE_DELETE
:
1596 case DPLANE_OP_RULE_UPDATE
:
1597 res
= kernel_pbr_rule_update(ctx
);
1600 case DPLANE_OP_INTF_INSTALL
:
1601 case DPLANE_OP_INTF_UPDATE
:
1602 case DPLANE_OP_INTF_DELETE
:
1603 res
= kernel_intf_update(ctx
);
1606 /* Ignore 'notifications' - no-op */
1607 case DPLANE_OP_SYS_ROUTE_ADD
:
1608 case DPLANE_OP_SYS_ROUTE_DELETE
:
1609 case DPLANE_OP_ROUTE_NOTIFY
:
1610 case DPLANE_OP_LSP_NOTIFY
:
1611 res
= ZEBRA_DPLANE_REQUEST_SUCCESS
;
1615 res
= ZEBRA_DPLANE_REQUEST_FAILURE
;
1620 dplane_ctx_set_status(ctx
, res
);
1622 dplane_ctx_enqueue_tail(&handled_list
, ctx
);
1625 TAILQ_INIT(ctx_list
);
1626 dplane_ctx_list_append(ctx_list
, &handled_list
);
1629 #endif /* !HAVE_NETLINK */