File: | netinet/ip_carp.c |
Warning: | line 499, column 2 Value stored to 'ip' is never read |
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1 | /* $OpenBSD: ip_carp.c,v 1.360 2023/12/23 10:52:54 bluhm Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2002 Michael Shalayeff. All rights reserved. |
5 | * Copyright (c) 2003 Ryan McBride. All rights reserved. |
6 | * Copyright (c) 2006-2008 Marco Pfatschbacher. All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, |
21 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
23 | * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
25 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
26 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
27 | * THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
29 | |
30 | /* |
31 | * TODO: |
32 | * - iface reconfigure |
33 | * - support for hardware checksum calculations; |
34 | * |
35 | */ |
36 | |
37 | #include "ether.h" |
38 | |
39 | #include <sys/param.h> |
40 | #include <sys/systm.h> |
41 | #include <sys/mbuf.h> |
42 | #include <sys/socket.h> |
43 | #include <sys/socketvar.h> |
44 | #include <sys/timeout.h> |
45 | #include <sys/ioctl.h> |
46 | #include <sys/errno.h> |
47 | #include <sys/device.h> |
48 | #include <sys/kernel.h> |
49 | #include <sys/sysctl.h> |
50 | #include <sys/syslog.h> |
51 | #include <sys/refcnt.h> |
52 | |
53 | #include <net/if.h> |
54 | #include <net/if_var.h> |
55 | #include <net/if_types.h> |
56 | #include <net/netisr.h> |
57 | |
58 | #include <crypto/sha1.h> |
59 | |
60 | #include <netinet/in.h> |
61 | #include <netinet/in_var.h> |
62 | #include <netinet/ip.h> |
63 | #include <netinet/ip_var.h> |
64 | #include <netinet/if_ether.h> |
65 | #include <netinet/ip_ipsp.h> |
66 | |
67 | #include <net/if_dl.h> |
68 | |
69 | #ifdef INET61 |
70 | #include <netinet6/in6_var.h> |
71 | #include <netinet/icmp6.h> |
72 | #include <netinet/ip6.h> |
73 | #include <netinet6/ip6_var.h> |
74 | #include <netinet6/nd6.h> |
75 | #include <netinet6/in6_ifattach.h> |
76 | #endif |
77 | |
78 | #include "bpfilter.h" |
79 | #if NBPFILTER1 > 0 |
80 | #include <net/bpf.h> |
81 | #endif |
82 | |
83 | #include "vlan.h" |
84 | #if NVLAN1 > 0 |
85 | #include <net/if_vlan_var.h> |
86 | #endif |
87 | |
88 | #include <netinet/ip_carp.h> |
89 | |
90 | struct carp_mc_entry { |
91 | LIST_ENTRY(carp_mc_entry)struct { struct carp_mc_entry *le_next; struct carp_mc_entry * *le_prev; } mc_entries; |
92 | union { |
93 | struct ether_multi *mcu_enm; |
94 | } mc_u; |
95 | struct sockaddr_storage mc_addr; |
96 | }; |
97 | #define mc_enmmc_u.mcu_enm mc_u.mcu_enm |
98 | |
99 | enum { HMAC_ORIG=0, HMAC_NOV6LL=1, HMAC_MAX=2 }; |
100 | |
101 | struct carp_vhost_entry { |
102 | SRPL_ENTRY(carp_vhost_entry)struct { struct srp se_next; } vhost_entries; |
103 | struct refcnt vhost_refcnt; |
104 | |
105 | struct carp_softc *parent_sc; |
106 | int vhe_leader; |
107 | int vhid; |
108 | int advskew; |
109 | enum { INIT = 0, BACKUP, MASTER } state; |
110 | struct timeout ad_tmo; /* advertisement timeout */ |
111 | struct timeout md_tmo; /* master down timeout */ |
112 | struct timeout md6_tmo; /* master down timeout */ |
113 | |
114 | u_int64_t vhe_replay_cookie; |
115 | |
116 | /* authentication */ |
117 | #define CARP_HMAC_PAD64 64 |
118 | unsigned char vhe_pad[CARP_HMAC_PAD64]; |
119 | SHA1_CTX vhe_sha1[HMAC_MAX]; |
120 | |
121 | u_int8_t vhe_enaddr[ETHER_ADDR_LEN6]; |
122 | }; |
123 | |
124 | void carp_vh_ref(void *, void *); |
125 | void carp_vh_unref(void *, void *); |
126 | |
127 | struct srpl_rc carp_vh_rc = |
128 | SRPL_RC_INITIALIZER(carp_vh_ref, carp_vh_unref, NULL){ carp_vh_ref, { (carp_vh_unref), (((void *)0)), { .r_refs = 1 , .r_traceidx = 0 } } }; |
129 | |
130 | struct carp_softc { |
131 | struct arpcom sc_ac; |
132 | #define sc_ifsc_ac.ac_if sc_ac.ac_if |
133 | #define sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx sc_ac.ac_if.if_carpdevidxif_carp_ptr.carp_idx |
134 | struct task sc_atask; |
135 | struct task sc_ltask; |
136 | struct task sc_dtask; |
137 | struct ip_moptions sc_imo; |
138 | #ifdef INET61 |
139 | struct ip6_moptions sc_im6o; |
140 | #endif /* INET6 */ |
141 | |
142 | SRPL_ENTRY(carp_softc)struct { struct srp se_next; } sc_list; |
143 | struct refcnt sc_refcnt; |
144 | |
145 | int sc_suppress; |
146 | int sc_bow_out; |
147 | int sc_demote_cnt; |
148 | |
149 | int sc_sendad_errors; |
150 | #define CARP_SENDAD_MAX_ERRORS(sc)(3 * (sc)->sc_vhe_count) (3 * (sc)->sc_vhe_count) |
151 | int sc_sendad_success; |
152 | #define CARP_SENDAD_MIN_SUCCESS(sc)(3 * (sc)->sc_vhe_count) (3 * (sc)->sc_vhe_count) |
153 | |
154 | char sc_curlladdr[ETHER_ADDR_LEN6]; |
155 | |
156 | SRPL_HEAD(, carp_vhost_entry)struct srpl carp_vhosts; |
157 | int sc_vhe_count; |
158 | u_int8_t sc_vhids[CARP_MAXNODES32]; |
159 | u_int8_t sc_advskews[CARP_MAXNODES32]; |
160 | u_int8_t sc_balancing; |
161 | |
162 | int sc_naddrs; |
163 | int sc_naddrs6; |
164 | int sc_advbase; /* seconds */ |
165 | |
166 | /* authentication */ |
167 | unsigned char sc_key[CARP_KEY_LEN20]; |
168 | |
169 | u_int32_t sc_hashkey[2]; |
170 | u_int32_t sc_lsmask; /* load sharing mask */ |
171 | int sc_lscount; /* # load sharing interfaces (max 32) */ |
172 | int sc_delayed_arp; /* delayed ARP request countdown */ |
173 | int sc_realmac; /* using real mac */ |
174 | |
175 | struct in_addr sc_peer; |
176 | |
177 | LIST_HEAD(__carp_mchead, carp_mc_entry)struct __carp_mchead { struct carp_mc_entry *lh_first; } carp_mc_listhead; |
178 | struct carp_vhost_entry *cur_vhe; /* current active vhe */ |
179 | }; |
180 | |
181 | void carp_sc_ref(void *, void *); |
182 | void carp_sc_unref(void *, void *); |
183 | |
184 | struct srpl_rc carp_sc_rc = |
185 | SRPL_RC_INITIALIZER(carp_sc_ref, carp_sc_unref, NULL){ carp_sc_ref, { (carp_sc_unref), (((void *)0)), { .r_refs = 1 , .r_traceidx = 0 } } }; |
186 | |
187 | int carp_opts[CARPCTL_MAXID5] = { 0, 1, 0, LOG_CRIT2 }; /* XXX for now */ |
188 | struct cpumem *carpcounters; |
189 | |
190 | int carp_send_all_recur = 0; |
191 | |
192 | #define CARP_LOG(l, sc, s)do { if (carp_opts[3] >= l) { if (sc) log(l, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(l, "carp: "); addlog s; addlog ("\n"); } } while (0) \ |
193 | do { \ |
194 | if (carp_opts[CARPCTL_LOG3] >= l) { \ |
195 | if (sc) \ |
196 | log(l, "%s: ", \ |
197 | (sc)->sc_ifsc_ac.ac_if.if_xname); \ |
198 | else \ |
199 | log(l, "carp: "); \ |
200 | addlog s; \ |
201 | addlog("\n"); \ |
202 | } \ |
203 | } while (0) |
204 | |
205 | void carp_hmac_prepare(struct carp_softc *); |
206 | void carp_hmac_prepare_ctx(struct carp_vhost_entry *, u_int8_t); |
207 | void carp_hmac_generate(struct carp_vhost_entry *, u_int32_t *, |
208 | unsigned char *, u_int8_t); |
209 | int carp_hmac_verify(struct carp_vhost_entry *, u_int32_t *, |
210 | unsigned char *); |
211 | void carp_proto_input_c(struct ifnet *, struct mbuf *, |
212 | struct carp_header *, int, sa_family_t); |
213 | int carp_proto_input_if(struct ifnet *, struct mbuf **, int *, int); |
214 | #ifdef INET61 |
215 | int carp6_proto_input_if(struct ifnet *, struct mbuf **, int *, int); |
216 | #endif |
217 | void carpattach(int); |
218 | void carpdetach(void *); |
219 | void carp_prepare_ad(struct mbuf *, struct carp_vhost_entry *, |
220 | struct carp_header *); |
221 | void carp_send_ad_all(void); |
222 | void carp_vhe_send_ad_all(struct carp_softc *); |
223 | void carp_timer_ad(void *); |
224 | void carp_send_ad(struct carp_vhost_entry *); |
225 | void carp_send_arp(struct carp_softc *); |
226 | void carp_timer_down(void *); |
227 | void carp_master_down(struct carp_vhost_entry *); |
228 | int carp_ioctl(struct ifnet *, u_long, caddr_t); |
229 | int carp_vhids_ioctl(struct carp_softc *, struct carpreq *); |
230 | int carp_check_dup_vhids(struct carp_softc *, struct srpl *, |
231 | struct carpreq *); |
232 | void carp_ifgroup_ioctl(struct ifnet *, u_long, caddr_t); |
233 | void carp_ifgattr_ioctl(struct ifnet *, u_long, caddr_t); |
234 | void carp_start(struct ifnet *); |
235 | int carp_enqueue(struct ifnet *, struct mbuf *); |
236 | void carp_transmit(struct carp_softc *, struct ifnet *, struct mbuf *); |
237 | void carp_setrun_all(struct carp_softc *, sa_family_t); |
238 | void carp_setrun(struct carp_vhost_entry *, sa_family_t); |
239 | void carp_set_state_all(struct carp_softc *, int); |
240 | void carp_set_state(struct carp_vhost_entry *, int); |
241 | void carp_multicast_cleanup(struct carp_softc *); |
242 | int carp_set_ifp(struct carp_softc *, struct ifnet *); |
243 | void carp_set_enaddr(struct carp_softc *); |
244 | void carp_set_vhe_enaddr(struct carp_vhost_entry *); |
245 | void carp_addr_updated(void *); |
246 | int carp_set_addr(struct carp_softc *, struct sockaddr_in *); |
247 | int carp_join_multicast(struct carp_softc *); |
248 | #ifdef INET61 |
249 | void carp_send_na(struct carp_softc *); |
250 | int carp_set_addr6(struct carp_softc *, struct sockaddr_in6 *); |
251 | int carp_join_multicast6(struct carp_softc *); |
252 | #endif |
253 | int carp_clone_create(struct if_clone *, int); |
254 | int carp_clone_destroy(struct ifnet *); |
255 | int carp_ether_addmulti(struct carp_softc *, struct ifreq *); |
256 | int carp_ether_delmulti(struct carp_softc *, struct ifreq *); |
257 | void carp_ether_purgemulti(struct carp_softc *); |
258 | int carp_group_demote_count(struct carp_softc *); |
259 | void carp_update_lsmask(struct carp_softc *); |
260 | int carp_new_vhost(struct carp_softc *, int, int); |
261 | void carp_destroy_vhosts(struct carp_softc *); |
262 | void carp_del_all_timeouts(struct carp_softc *); |
263 | int carp_vhe_match(struct carp_softc *, uint64_t); |
264 | |
265 | struct if_clone carp_cloner = |
266 | IF_CLONE_INITIALIZER("carp", carp_clone_create, carp_clone_destroy){ .ifc_list = { ((void *)0), ((void *)0) }, .ifc_name = "carp" , .ifc_namelen = sizeof("carp") - 1, .ifc_create = carp_clone_create , .ifc_destroy = carp_clone_destroy, }; |
267 | |
268 | #define carp_cksum(_m, _l)((u_int16_t)in_cksum((_m), (_l))) ((u_int16_t)in_cksum((_m), (_l))) |
269 | #define CARP_IFQ_PRIO6 6 |
270 | |
271 | void |
272 | carp_hmac_prepare(struct carp_softc *sc) |
273 | { |
274 | struct carp_vhost_entry *vhe; |
275 | u_int8_t i; |
276 | |
277 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 277, "_kernel_lock_held()")); /* touching carp_vhosts */ |
278 | |
279 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
280 | for (i = 0; i < HMAC_MAX; i++) { |
281 | carp_hmac_prepare_ctx(vhe, i); |
282 | } |
283 | } |
284 | } |
285 | |
286 | void |
287 | carp_hmac_prepare_ctx(struct carp_vhost_entry *vhe, u_int8_t ctx) |
288 | { |
289 | struct carp_softc *sc = vhe->parent_sc; |
290 | |
291 | u_int8_t version = CARP_VERSION2, type = CARP_ADVERTISEMENT0x01; |
292 | u_int8_t vhid = vhe->vhid & 0xff; |
293 | SHA1_CTX sha1ctx; |
294 | u_int32_t kmd[5]; |
295 | struct ifaddr *ifa; |
296 | int i, found; |
297 | struct in_addr last, cur, in; |
298 | #ifdef INET61 |
299 | struct in6_addr last6, cur6, in6; |
300 | #endif /* INET6 */ |
301 | |
302 | /* compute ipad from key */ |
303 | memset(vhe->vhe_pad, 0, sizeof(vhe->vhe_pad))__builtin_memset((vhe->vhe_pad), (0), (sizeof(vhe->vhe_pad ))); |
304 | bcopy(sc->sc_key, vhe->vhe_pad, sizeof(sc->sc_key)); |
305 | for (i = 0; i < sizeof(vhe->vhe_pad); i++) |
306 | vhe->vhe_pad[i] ^= 0x36; |
307 | |
308 | /* precompute first part of inner hash */ |
309 | SHA1Init(&vhe->vhe_sha1[ctx]); |
310 | SHA1Update(&vhe->vhe_sha1[ctx], vhe->vhe_pad, sizeof(vhe->vhe_pad)); |
311 | SHA1Update(&vhe->vhe_sha1[ctx], (void *)&version, sizeof(version)); |
312 | SHA1Update(&vhe->vhe_sha1[ctx], (void *)&type, sizeof(type)); |
313 | |
314 | /* generate a key for the arpbalance hash, before the vhid is hashed */ |
315 | if (vhe->vhe_leader) { |
316 | bcopy(&vhe->vhe_sha1[ctx], &sha1ctx, sizeof(sha1ctx)); |
317 | SHA1Final((unsigned char *)kmd, &sha1ctx); |
318 | sc->sc_hashkey[0] = kmd[0] ^ kmd[1]; |
319 | sc->sc_hashkey[1] = kmd[2] ^ kmd[3]; |
320 | } |
321 | |
322 | /* the rest of the precomputation */ |
323 | if (!sc->sc_realmac && vhe->vhe_leader && |
324 | memcmp(sc->sc_ac.ac_enaddr, vhe->vhe_enaddr, ETHER_ADDR_LEN)__builtin_memcmp((sc->sc_ac.ac_enaddr), (vhe->vhe_enaddr ), (6)) != 0) |
325 | SHA1Update(&vhe->vhe_sha1[ctx], sc->sc_ac.ac_enaddr, |
326 | ETHER_ADDR_LEN6); |
327 | |
328 | SHA1Update(&vhe->vhe_sha1[ctx], (void *)&vhid, sizeof(vhid)); |
329 | |
330 | /* Hash the addresses from smallest to largest, not interface order */ |
331 | cur.s_addr = 0; |
332 | do { |
333 | found = 0; |
334 | last = cur; |
335 | cur.s_addr = 0xffffffff; |
336 | TAILQ_FOREACH(ifa, &sc->sc_if.if_addrlist, ifa_list)for((ifa) = ((&sc->sc_ac.ac_if.if_addrlist)->tqh_first ); (ifa) != ((void *)0); (ifa) = ((ifa)->ifa_list.tqe_next )) { |
337 | if (ifa->ifa_addr->sa_family != AF_INET2) |
338 | continue; |
339 | in.s_addr = ifatoia(ifa)->ia_addr.sin_addr.s_addr; |
340 | if (ntohl(in.s_addr)(__uint32_t)(__builtin_constant_p(in.s_addr) ? (__uint32_t)(( (__uint32_t)(in.s_addr) & 0xff) << 24 | ((__uint32_t )(in.s_addr) & 0xff00) << 8 | ((__uint32_t)(in.s_addr ) & 0xff0000) >> 8 | ((__uint32_t)(in.s_addr) & 0xff000000) >> 24) : __swap32md(in.s_addr)) > ntohl(last.s_addr)(__uint32_t)(__builtin_constant_p(last.s_addr) ? (__uint32_t) (((__uint32_t)(last.s_addr) & 0xff) << 24 | ((__uint32_t )(last.s_addr) & 0xff00) << 8 | ((__uint32_t)(last. s_addr) & 0xff0000) >> 8 | ((__uint32_t)(last.s_addr ) & 0xff000000) >> 24) : __swap32md(last.s_addr)) && |
341 | ntohl(in.s_addr)(__uint32_t)(__builtin_constant_p(in.s_addr) ? (__uint32_t)(( (__uint32_t)(in.s_addr) & 0xff) << 24 | ((__uint32_t )(in.s_addr) & 0xff00) << 8 | ((__uint32_t)(in.s_addr ) & 0xff0000) >> 8 | ((__uint32_t)(in.s_addr) & 0xff000000) >> 24) : __swap32md(in.s_addr)) < ntohl(cur.s_addr)(__uint32_t)(__builtin_constant_p(cur.s_addr) ? (__uint32_t)( ((__uint32_t)(cur.s_addr) & 0xff) << 24 | ((__uint32_t )(cur.s_addr) & 0xff00) << 8 | ((__uint32_t)(cur.s_addr ) & 0xff0000) >> 8 | ((__uint32_t)(cur.s_addr) & 0xff000000) >> 24) : __swap32md(cur.s_addr))) { |
342 | cur.s_addr = in.s_addr; |
343 | found++; |
344 | } |
345 | } |
346 | if (found) |
347 | SHA1Update(&vhe->vhe_sha1[ctx], |
348 | (void *)&cur, sizeof(cur)); |
349 | } while (found); |
350 | #ifdef INET61 |
351 | memset(&cur6, 0x00, sizeof(cur6))__builtin_memset((&cur6), (0x00), (sizeof(cur6))); |
352 | do { |
353 | found = 0; |
354 | last6 = cur6; |
355 | memset(&cur6, 0xff, sizeof(cur6))__builtin_memset((&cur6), (0xff), (sizeof(cur6))); |
356 | TAILQ_FOREACH(ifa, &sc->sc_if.if_addrlist, ifa_list)for((ifa) = ((&sc->sc_ac.ac_if.if_addrlist)->tqh_first ); (ifa) != ((void *)0); (ifa) = ((ifa)->ifa_list.tqe_next )) { |
357 | if (ifa->ifa_addr->sa_family != AF_INET624) |
358 | continue; |
359 | in6 = ifatoia6(ifa)->ia_addr.sin6_addr; |
360 | if (IN6_IS_SCOPE_EMBED(&in6)(((((&in6)->__u6_addr.__u6_addr8[0] == 0xfe) && (((&in6)->__u6_addr.__u6_addr8[1] & 0xc0) == 0x80 ))) || ((((&in6)->__u6_addr.__u6_addr8[0] == 0xff) && (((&in6)->__u6_addr.__u6_addr8[1] & 0x0f) == 0x02 ))) || ((((&in6)->__u6_addr.__u6_addr8[0] == 0xff) && (((&in6)->__u6_addr.__u6_addr8[1] & 0x0f) == 0x01 ))))) { |
361 | if (ctx == HMAC_NOV6LL) |
362 | continue; |
363 | in6.s6_addr16__u6_addr.__u6_addr16[1] = 0; |
364 | } |
365 | if (memcmp(&in6, &last6, sizeof(in6))__builtin_memcmp((&in6), (&last6), (sizeof(in6))) > 0 && |
366 | memcmp(&in6, &cur6, sizeof(in6))__builtin_memcmp((&in6), (&cur6), (sizeof(in6))) < 0) { |
367 | cur6 = in6; |
368 | found++; |
369 | } |
370 | } |
371 | if (found) |
372 | SHA1Update(&vhe->vhe_sha1[ctx], |
373 | (void *)&cur6, sizeof(cur6)); |
374 | } while (found); |
375 | #endif /* INET6 */ |
376 | |
377 | /* convert ipad to opad */ |
378 | for (i = 0; i < sizeof(vhe->vhe_pad); i++) |
379 | vhe->vhe_pad[i] ^= 0x36 ^ 0x5c; |
380 | } |
381 | |
382 | void |
383 | carp_hmac_generate(struct carp_vhost_entry *vhe, u_int32_t counter[2], |
384 | unsigned char md[20], u_int8_t ctx) |
385 | { |
386 | SHA1_CTX sha1ctx; |
387 | |
388 | /* fetch first half of inner hash */ |
389 | bcopy(&vhe->vhe_sha1[ctx], &sha1ctx, sizeof(sha1ctx)); |
390 | |
391 | SHA1Update(&sha1ctx, (void *)counter, sizeof(vhe->vhe_replay_cookie)); |
392 | SHA1Final(md, &sha1ctx); |
393 | |
394 | /* outer hash */ |
395 | SHA1Init(&sha1ctx); |
396 | SHA1Update(&sha1ctx, vhe->vhe_pad, sizeof(vhe->vhe_pad)); |
397 | SHA1Update(&sha1ctx, md, 20); |
398 | SHA1Final(md, &sha1ctx); |
399 | } |
400 | |
401 | int |
402 | carp_hmac_verify(struct carp_vhost_entry *vhe, u_int32_t counter[2], |
403 | unsigned char md[20]) |
404 | { |
405 | unsigned char md2[20]; |
406 | u_int8_t i; |
407 | |
408 | for (i = 0; i < HMAC_MAX; i++) { |
409 | carp_hmac_generate(vhe, counter, md2, i); |
410 | if (!timingsafe_bcmp(md, md2, sizeof(md2))) |
411 | return (0); |
412 | } |
413 | return (1); |
414 | } |
415 | |
416 | int |
417 | carp_proto_input(struct mbuf **mp, int *offp, int proto, int af) |
418 | { |
419 | struct ifnet *ifp; |
420 | |
421 | ifp = if_get((*mp)->m_pkthdrM_dat.MH.MH_pkthdr.ph_ifidx); |
422 | if (ifp == NULL((void *)0)) { |
423 | m_freemp(mp); |
424 | return IPPROTO_DONE257; |
425 | } |
426 | |
427 | proto = carp_proto_input_if(ifp, mp, offp, proto); |
428 | if_put(ifp); |
429 | return proto; |
430 | } |
431 | |
432 | /* |
433 | * process input packet. |
434 | * we have rearranged checks order compared to the rfc, |
435 | * but it seems more efficient this way or not possible otherwise. |
436 | */ |
437 | int |
438 | carp_proto_input_if(struct ifnet *ifp, struct mbuf **mp, int *offp, int proto) |
439 | { |
440 | struct mbuf *m = *mp; |
441 | struct ip *ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); |
442 | struct carp_softc *sc = NULL((void *)0); |
443 | struct carp_header *ch; |
444 | int iplen, len, ismulti; |
445 | |
446 | carpstat_inc(carps_ipackets); |
447 | |
448 | if (!carp_opts[CARPCTL_ALLOW1]) { |
449 | m_freem(m); |
450 | return IPPROTO_DONE257; |
451 | } |
452 | |
453 | ismulti = IN_MULTICAST(ip->ip_dst.s_addr)(((u_int32_t)(ip->ip_dst.s_addr) & ((u_int32_t) (__uint32_t )(__builtin_constant_p((u_int32_t)(0xf0000000)) ? (__uint32_t )(((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xf0000000))))) == ((u_int32_t ) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000000)) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff ) << 24 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff00 ) << 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff0000 ) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff000000 ) >> 24) : __swap32md((u_int32_t)(0xe0000000))))); |
454 | |
455 | /* check if received on a valid carp interface */ |
456 | switch (ifp->if_typeif_data.ifi_type) { |
457 | case IFT_CARP0xf7: |
458 | break; |
459 | case IFT_ETHER0x06: |
460 | if (ismulti || !SRPL_EMPTY_LOCKED(&ifp->if_carp)(srp_get_locked(&(&ifp->if_carp_ptr.carp_s)->sl_head ) == ((void *)0))) |
461 | break; |
462 | /* FALLTHROUGH */ |
463 | default: |
464 | carpstat_inc(carps_badif); |
465 | CARP_LOG(LOG_INFO, sc,do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet received on non-carp interface: %s" , ifp->if_xname); addlog("\n"); } } while (0) |
466 | ("packet received on non-carp interface: %s",do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet received on non-carp interface: %s" , ifp->if_xname); addlog("\n"); } } while (0) |
467 | ifp->if_xname))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet received on non-carp interface: %s" , ifp->if_xname); addlog("\n"); } } while (0); |
468 | m_freem(m); |
469 | return IPPROTO_DONE257; |
470 | } |
471 | |
472 | /* verify that the IP TTL is 255. */ |
473 | if (ip->ip_ttl != CARP_DFLTTL255) { |
474 | carpstat_inc(carps_badttl); |
475 | CARP_LOG(LOG_NOTICE, sc, ("received ttl %d != %d on %s",do { if (carp_opts[3] >= 5) { if (sc) log(5, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(5, "carp: "); addlog ("received ttl %d != %d on %s" , ip->ip_ttl, 255, ifp->if_xname); addlog("\n"); } } while (0) |
476 | ip->ip_ttl, CARP_DFLTTL, ifp->if_xname))do { if (carp_opts[3] >= 5) { if (sc) log(5, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(5, "carp: "); addlog ("received ttl %d != %d on %s" , ip->ip_ttl, 255, ifp->if_xname); addlog("\n"); } } while (0); |
477 | m_freem(m); |
478 | return IPPROTO_DONE257; |
479 | } |
480 | |
481 | /* |
482 | * verify that the received packet length is |
483 | * equal to the CARP header |
484 | */ |
485 | iplen = ip->ip_hl << 2; |
486 | len = iplen + sizeof(*ch); |
487 | if (len > m->m_pkthdrM_dat.MH.MH_pkthdr.len) { |
488 | carpstat_inc(carps_badlen); |
489 | CARP_LOG(LOG_INFO, sc, ("packet too short %d on %s",do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet too short %d on %s" , m->M_dat.MH.MH_pkthdr.len, ifp->if_xname); addlog("\n" ); } } while (0) |
490 | m->m_pkthdr.len, ifp->if_xname))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet too short %d on %s" , m->M_dat.MH.MH_pkthdr.len, ifp->if_xname); addlog("\n" ); } } while (0); |
491 | m_freem(m); |
492 | return IPPROTO_DONE257; |
493 | } |
494 | |
495 | if ((m = *mp = m_pullup(m, len)) == NULL((void *)0)) { |
496 | carpstat_inc(carps_hdrops); |
497 | return IPPROTO_DONE257; |
498 | } |
499 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); |
Value stored to 'ip' is never read | |
500 | ch = (struct carp_header *)(mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)) + iplen); |
501 | |
502 | /* verify the CARP checksum */ |
503 | m->m_datam_hdr.mh_data += iplen; |
504 | if (carp_cksum(m, len - iplen)((u_int16_t)in_cksum((m), (len - iplen)))) { |
505 | carpstat_inc(carps_badsum); |
506 | CARP_LOG(LOG_INFO, sc, ("checksum failed on %s",do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("checksum failed on %s" , ifp->if_xname); addlog("\n"); } } while (0) |
507 | ifp->if_xname))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("checksum failed on %s" , ifp->if_xname); addlog("\n"); } } while (0); |
508 | m_freem(m); |
509 | return IPPROTO_DONE257; |
510 | } |
511 | m->m_datam_hdr.mh_data -= iplen; |
512 | |
513 | KERNEL_LOCK()_kernel_lock(); |
514 | carp_proto_input_c(ifp, m, ch, ismulti, AF_INET2); |
515 | KERNEL_UNLOCK()_kernel_unlock(); |
516 | return IPPROTO_DONE257; |
517 | } |
518 | |
519 | #ifdef INET61 |
520 | int |
521 | carp6_proto_input(struct mbuf **mp, int *offp, int proto, int af) |
522 | { |
523 | struct ifnet *ifp; |
524 | |
525 | ifp = if_get((*mp)->m_pkthdrM_dat.MH.MH_pkthdr.ph_ifidx); |
526 | if (ifp == NULL((void *)0)) { |
527 | m_freemp(mp); |
528 | return IPPROTO_DONE257; |
529 | } |
530 | |
531 | proto = carp6_proto_input_if(ifp, mp, offp, proto); |
532 | if_put(ifp); |
533 | return proto; |
534 | } |
535 | |
536 | int |
537 | carp6_proto_input_if(struct ifnet *ifp, struct mbuf **mp, int *offp, int proto) |
538 | { |
539 | struct mbuf *m = *mp; |
540 | struct carp_softc *sc = NULL((void *)0); |
541 | struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *)((struct ip6_hdr *)((m)->m_hdr.mh_data)); |
542 | struct carp_header *ch; |
543 | u_int len; |
544 | |
545 | carpstat_inc(carps_ipackets6); |
546 | |
547 | if (!carp_opts[CARPCTL_ALLOW1]) { |
548 | m_freem(m); |
549 | return IPPROTO_DONE257; |
550 | } |
551 | |
552 | /* check if received on a valid carp interface */ |
553 | if (ifp->if_typeif_data.ifi_type != IFT_CARP0xf7) { |
554 | carpstat_inc(carps_badif); |
555 | CARP_LOG(LOG_INFO, sc, ("packet received on non-carp interface: %s",do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet received on non-carp interface: %s" , ifp->if_xname); addlog("\n"); } } while (0) |
556 | ifp->if_xname))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet received on non-carp interface: %s" , ifp->if_xname); addlog("\n"); } } while (0); |
557 | m_freem(m); |
558 | return IPPROTO_DONE257; |
559 | } |
560 | |
561 | /* verify that the IP TTL is 255 */ |
562 | if (ip6->ip6_hlimip6_ctlun.ip6_un1.ip6_un1_hlim != CARP_DFLTTL255) { |
563 | carpstat_inc(carps_badttl); |
564 | CARP_LOG(LOG_NOTICE, sc, ("received ttl %d != %d on %s",do { if (carp_opts[3] >= 5) { if (sc) log(5, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(5, "carp: "); addlog ("received ttl %d != %d on %s" , ip6->ip6_ctlun.ip6_un1.ip6_un1_hlim, 255, ifp->if_xname ); addlog("\n"); } } while (0) |
565 | ip6->ip6_hlim, CARP_DFLTTL, ifp->if_xname))do { if (carp_opts[3] >= 5) { if (sc) log(5, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(5, "carp: "); addlog ("received ttl %d != %d on %s" , ip6->ip6_ctlun.ip6_un1.ip6_un1_hlim, 255, ifp->if_xname ); addlog("\n"); } } while (0); |
566 | m_freem(m); |
567 | return IPPROTO_DONE257; |
568 | } |
569 | |
570 | /* verify that we have a complete carp packet */ |
571 | len = m->m_lenm_hdr.mh_len; |
572 | if ((m = *mp = m_pullup(m, *offp + sizeof(*ch))) == NULL((void *)0)) { |
573 | carpstat_inc(carps_badlen); |
574 | CARP_LOG(LOG_INFO, sc, ("packet size %u too small", len))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("packet size %u too small" , len); addlog("\n"); } } while (0); |
575 | return IPPROTO_DONE257; |
576 | } |
577 | ch = (struct carp_header *)(mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)) + *offp); |
578 | |
579 | /* verify the CARP checksum */ |
580 | m->m_datam_hdr.mh_data += *offp; |
581 | if (carp_cksum(m, sizeof(*ch))((u_int16_t)in_cksum((m), (sizeof(*ch))))) { |
582 | carpstat_inc(carps_badsum); |
583 | CARP_LOG(LOG_INFO, sc, ("checksum failed, on %s",do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("checksum failed, on %s" , ifp->if_xname); addlog("\n"); } } while (0) |
584 | ifp->if_xname))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("checksum failed, on %s" , ifp->if_xname); addlog("\n"); } } while (0); |
585 | m_freem(m); |
586 | return IPPROTO_DONE257; |
587 | } |
588 | m->m_datam_hdr.mh_data -= *offp; |
589 | |
590 | KERNEL_LOCK()_kernel_lock(); |
591 | carp_proto_input_c(ifp, m, ch, 1, AF_INET624); |
592 | KERNEL_UNLOCK()_kernel_unlock(); |
593 | return IPPROTO_DONE257; |
594 | } |
595 | #endif /* INET6 */ |
596 | |
597 | void |
598 | carp_proto_input_c(struct ifnet *ifp, struct mbuf *m, struct carp_header *ch, |
599 | int ismulti, sa_family_t af) |
600 | { |
601 | struct carp_softc *sc; |
602 | struct ifnet *ifp0; |
603 | struct carp_vhost_entry *vhe; |
604 | struct timeval sc_tv, ch_tv; |
605 | struct srpl *cif; |
606 | |
607 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 607, "_kernel_lock_held()")); /* touching if_carp + carp_vhosts */ |
608 | |
609 | ifp0 = if_get(ifp->if_carpdevidxif_carp_ptr.carp_idx); |
610 | |
611 | if (ifp->if_typeif_data.ifi_type == IFT_CARP0xf7) { |
612 | /* |
613 | * If the parent of this carp(4) got destroyed while |
614 | * `m' was being processed, silently drop it. |
615 | */ |
616 | if (ifp0 == NULL((void *)0)) |
617 | goto rele; |
618 | cif = &ifp0->if_carpif_carp_ptr.carp_s; |
619 | } else |
620 | cif = &ifp->if_carpif_carp_ptr.carp_s; |
621 | |
622 | SRPL_FOREACH_LOCKED(sc, cif, sc_list)for ((sc) = srp_get_locked(&(cif)->sl_head); (sc) != ( (void *)0); (sc) = srp_get_locked(&((sc))->sc_list.se_next )) { |
623 | if (af == AF_INET2 && |
624 | ismulti != IN_MULTICAST(sc->sc_peer.s_addr)(((u_int32_t)(sc->sc_peer.s_addr) & ((u_int32_t) (__uint32_t )(__builtin_constant_p((u_int32_t)(0xf0000000)) ? (__uint32_t )(((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xf0000000))))) == ((u_int32_t ) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000000)) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff ) << 24 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff00 ) << 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff0000 ) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff000000 ) >> 24) : __swap32md((u_int32_t)(0xe0000000)))))) |
625 | continue; |
626 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
627 | if (vhe->vhid == ch->carp_vhid) |
628 | goto found; |
629 | } |
630 | } |
631 | found: |
632 | |
633 | if (!sc || (sc->sc_ifsc_ac.ac_if.if_flags & (IFF_UP0x1|IFF_RUNNING0x40)) != |
634 | (IFF_UP0x1|IFF_RUNNING0x40)) { |
635 | carpstat_inc(carps_badvhid); |
636 | goto rele; |
637 | } |
638 | |
639 | getmicrotime(&sc->sc_ifsc_ac.ac_if.if_lastchangeif_data.ifi_lastchange); |
640 | |
641 | /* verify the CARP version. */ |
642 | if (ch->carp_version != CARP_VERSION2) { |
643 | carpstat_inc(carps_badver); |
644 | sc->sc_ifsc_ac.ac_if.if_ierrorsif_data.ifi_ierrors++; |
645 | CARP_LOG(LOG_NOTICE, sc, ("invalid version %d != %d",do { if (carp_opts[3] >= 5) { if (sc) log(5, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(5, "carp: "); addlog ("invalid version %d != %d" , ch->carp_version, 2); addlog("\n"); } } while (0) |
646 | ch->carp_version, CARP_VERSION))do { if (carp_opts[3] >= 5) { if (sc) log(5, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(5, "carp: "); addlog ("invalid version %d != %d" , ch->carp_version, 2); addlog("\n"); } } while (0); |
647 | goto rele; |
648 | } |
649 | |
650 | /* verify the hash */ |
651 | if (carp_hmac_verify(vhe, ch->carp_counter, ch->carp_md)) { |
652 | carpstat_inc(carps_badauth); |
653 | sc->sc_ifsc_ac.ac_if.if_ierrorsif_data.ifi_ierrors++; |
654 | CARP_LOG(LOG_INFO, sc, ("incorrect hash"))do { if (carp_opts[3] >= 6) { if (sc) log(6, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(6, "carp: "); addlog ("incorrect hash" ); addlog("\n"); } } while (0); |
655 | goto rele; |
656 | } |
657 | |
658 | if (!memcmp(&vhe->vhe_replay_cookie, ch->carp_counter,__builtin_memcmp((&vhe->vhe_replay_cookie), (ch->carp_counter ), (sizeof(ch->carp_counter))) |
659 | sizeof(ch->carp_counter))__builtin_memcmp((&vhe->vhe_replay_cookie), (ch->carp_counter ), (sizeof(ch->carp_counter)))) { |
660 | struct ifnet *ifp2; |
661 | |
662 | ifp2 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx); |
663 | /* Do not log duplicates from non simplex interfaces */ |
664 | if (ifp2 && ifp2->if_flags & IFF_SIMPLEX0x800) { |
665 | carpstat_inc(carps_badauth); |
666 | sc->sc_ifsc_ac.ac_if.if_ierrorsif_data.ifi_ierrors++; |
667 | CARP_LOG(LOG_WARNING, sc,do { if (carp_opts[3] >= 4) { if (sc) log(4, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(4, "carp: "); addlog ("replay or network loop detected" ); addlog("\n"); } } while (0) |
668 | ("replay or network loop detected"))do { if (carp_opts[3] >= 4) { if (sc) log(4, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(4, "carp: "); addlog ("replay or network loop detected" ); addlog("\n"); } } while (0); |
669 | } |
670 | if_put(ifp2); |
671 | goto rele; |
672 | } |
673 | |
674 | sc_tv.tv_sec = sc->sc_advbase; |
675 | sc_tv.tv_usec = vhe->advskew * 1000000 / 256; |
676 | ch_tv.tv_sec = ch->carp_advbase; |
677 | ch_tv.tv_usec = ch->carp_advskew * 1000000 / 256; |
678 | |
679 | switch (vhe->state) { |
680 | case INIT: |
681 | break; |
682 | case MASTER: |
683 | /* |
684 | * If we receive an advertisement from a master who's going to |
685 | * be more frequent than us, and whose demote count is not higher |
686 | * than ours, go into BACKUP state. If his demote count is lower, |
687 | * also go into BACKUP. |
688 | */ |
689 | if (((timercmp(&sc_tv, &ch_tv, >)(((&sc_tv)->tv_sec == (&ch_tv)->tv_sec) ? ((& sc_tv)->tv_usec > (&ch_tv)->tv_usec) : ((&sc_tv )->tv_sec > (&ch_tv)->tv_sec)) || |
690 | timercmp(&sc_tv, &ch_tv, ==)(((&sc_tv)->tv_sec == (&ch_tv)->tv_sec) ? ((& sc_tv)->tv_usec == (&ch_tv)->tv_usec) : ((&sc_tv )->tv_sec == (&ch_tv)->tv_sec))) && |
691 | (ch->carp_demote <= carp_group_demote_count(sc))) || |
692 | ch->carp_demote < carp_group_demote_count(sc)) { |
693 | timeout_del(&vhe->ad_tmo); |
694 | carp_set_state(vhe, BACKUP); |
695 | carp_setrun(vhe, 0); |
696 | } |
697 | break; |
698 | case BACKUP: |
699 | /* |
700 | * If we're pre-empting masters who advertise slower than us, |
701 | * and do not have a better demote count, treat them as down. |
702 | * |
703 | */ |
704 | if (carp_opts[CARPCTL_PREEMPT2] && |
705 | timercmp(&sc_tv, &ch_tv, <)(((&sc_tv)->tv_sec == (&ch_tv)->tv_sec) ? ((& sc_tv)->tv_usec < (&ch_tv)->tv_usec) : ((&sc_tv )->tv_sec < (&ch_tv)->tv_sec)) && |
706 | ch->carp_demote >= carp_group_demote_count(sc)) { |
707 | carp_master_down(vhe); |
708 | break; |
709 | } |
710 | |
711 | /* |
712 | * Take over masters advertising with a higher demote count, |
713 | * regardless of CARPCTL_PREEMPT. |
714 | */ |
715 | if (ch->carp_demote > carp_group_demote_count(sc)) { |
716 | carp_master_down(vhe); |
717 | break; |
718 | } |
719 | |
720 | /* |
721 | * If the master is going to advertise at such a low frequency |
722 | * that he's guaranteed to time out, we'd might as well just |
723 | * treat him as timed out now. |
724 | */ |
725 | sc_tv.tv_sec = sc->sc_advbase * 3; |
726 | if (sc->sc_advbase && timercmp(&sc_tv, &ch_tv, <)(((&sc_tv)->tv_sec == (&ch_tv)->tv_sec) ? ((& sc_tv)->tv_usec < (&ch_tv)->tv_usec) : ((&sc_tv )->tv_sec < (&ch_tv)->tv_sec))) { |
727 | carp_master_down(vhe); |
728 | break; |
729 | } |
730 | |
731 | /* |
732 | * Otherwise, we reset the counter and wait for the next |
733 | * advertisement. |
734 | */ |
735 | carp_setrun(vhe, af); |
736 | break; |
737 | } |
738 | |
739 | rele: |
740 | if_put(ifp0); |
741 | m_freem(m); |
742 | return; |
743 | } |
744 | |
745 | int |
746 | carp_sysctl_carpstat(void *oldp, size_t *oldlenp, void *newp) |
747 | { |
748 | struct carpstats carpstat; |
749 | |
750 | CTASSERT(sizeof(carpstat) == (carps_ncounters * sizeof(uint64_t)))extern char _ctassert[(sizeof(carpstat) == (carps_ncounters * sizeof(uint64_t))) ? 1 : -1 ] __attribute__((__unused__)); |
751 | memset(&carpstat, 0, sizeof carpstat)__builtin_memset((&carpstat), (0), (sizeof carpstat)); |
752 | counters_read(carpcounters, (uint64_t *)&carpstat, carps_ncounters, |
753 | NULL((void *)0)); |
754 | return (sysctl_rdstruct(oldp, oldlenp, newp, |
755 | &carpstat, sizeof(carpstat))); |
756 | } |
757 | |
758 | int |
759 | carp_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, |
760 | size_t newlen) |
761 | { |
762 | int error; |
763 | |
764 | /* All sysctl names at this level are terminal. */ |
765 | if (namelen != 1) |
766 | return (ENOTDIR20); |
767 | |
768 | switch (name[0]) { |
769 | case CARPCTL_STATS4: |
770 | return (carp_sysctl_carpstat(oldp, oldlenp, newp)); |
771 | default: |
772 | if (name[0] <= 0 || name[0] >= CARPCTL_MAXID5) |
773 | return (ENOPROTOOPT42); |
774 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
775 | error = sysctl_int(oldp, oldlenp, newp, newlen, |
776 | &carp_opts[name[0]]); |
777 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
778 | return (error); |
779 | } |
780 | } |
781 | |
782 | /* |
783 | * Interface side of the CARP implementation. |
784 | */ |
785 | |
786 | void |
787 | carpattach(int n) |
788 | { |
789 | if_creategroup("carp"); /* keep around even if empty */ |
790 | if_clone_attach(&carp_cloner); |
791 | carpcounters = counters_alloc(carps_ncounters); |
792 | } |
793 | |
794 | int |
795 | carp_clone_create(struct if_clone *ifc, int unit) |
796 | { |
797 | struct carp_softc *sc; |
798 | struct ifnet *ifp; |
799 | |
800 | sc = malloc(sizeof(*sc), M_DEVBUF2, M_WAITOK0x0001|M_ZERO0x0008); |
801 | refcnt_init(&sc->sc_refcnt); |
802 | |
803 | SRPL_INIT(&sc->carp_vhosts)srp_init(&(&sc->carp_vhosts)->sl_head); |
804 | sc->sc_vhe_count = 0; |
805 | if (carp_new_vhost(sc, 0, 0)) { |
806 | free(sc, M_DEVBUF2, sizeof(*sc)); |
807 | return (ENOMEM12); |
808 | } |
809 | |
810 | task_set(&sc->sc_atask, carp_addr_updated, sc); |
811 | task_set(&sc->sc_ltask, carp_carpdev_state, sc); |
812 | task_set(&sc->sc_dtask, carpdetach, sc); |
813 | |
814 | sc->sc_suppress = 0; |
815 | sc->sc_advbase = CARP_DFLTINTV1; |
816 | sc->sc_naddrs = sc->sc_naddrs6 = 0; |
817 | #ifdef INET61 |
818 | sc->sc_im6o.im6o_hlim = CARP_DFLTTL255; |
819 | #endif /* INET6 */ |
820 | sc->sc_imo.imo_membership = mallocarray(IP_MIN_MEMBERSHIPS15, |
821 | sizeof(struct in_multi *), M_IPMOPTS53, M_WAITOK0x0001|M_ZERO0x0008); |
822 | sc->sc_imo.imo_max_memberships = IP_MIN_MEMBERSHIPS15; |
823 | |
824 | LIST_INIT(&sc->carp_mc_listhead)do { ((&sc->carp_mc_listhead)->lh_first) = ((void * )0); } while (0); |
825 | ifp = &sc->sc_ifsc_ac.ac_if; |
826 | ifp->if_softc = sc; |
827 | snprintf(ifp->if_xname, sizeof ifp->if_xname, "%s%d", ifc->ifc_name, |
828 | unit); |
829 | ifp->if_flags = IFF_BROADCAST0x2 | IFF_SIMPLEX0x800 | IFF_MULTICAST0x8000; |
830 | ifp->if_ioctl = carp_ioctl; |
831 | ifp->if_start = carp_start; |
832 | ifp->if_enqueue = carp_enqueue; |
833 | ifp->if_xflags = IFXF_CLONED0x2; |
834 | if_counters_alloc(ifp); |
835 | if_attach(ifp); |
836 | ether_ifattach(ifp); |
837 | ifp->if_typeif_data.ifi_type = IFT_CARP0xf7; |
838 | ifp->if_sadl->sdl_type = IFT_CARP0xf7; |
839 | ifp->if_output = carp_output; |
840 | ifp->if_priority = IF_CARP_DEFAULT_PRIORITY15; |
841 | ifp->if_link_stateif_data.ifi_link_state = LINK_STATE_INVALID1; |
842 | |
843 | /* Hook carp_addr_updated to cope with address and route changes. */ |
844 | if_addrhook_add(&sc->sc_ifsc_ac.ac_if, &sc->sc_atask); |
845 | |
846 | return (0); |
847 | } |
848 | |
849 | int |
850 | carp_new_vhost(struct carp_softc *sc, int vhid, int advskew) |
851 | { |
852 | struct carp_vhost_entry *vhe, *vhe0; |
853 | |
854 | vhe = malloc(sizeof(*vhe), M_DEVBUF2, M_NOWAIT0x0002 | M_ZERO0x0008); |
855 | if (vhe == NULL((void *)0)) |
856 | return (ENOMEM12); |
857 | |
858 | refcnt_init(&vhe->vhost_refcnt); |
859 | carp_sc_ref(NULL((void *)0), sc); /* give a sc ref to the vhe */ |
860 | vhe->parent_sc = sc; |
861 | vhe->vhid = vhid; |
862 | vhe->advskew = advskew; |
863 | vhe->state = INIT; |
864 | timeout_set_proc(&vhe->ad_tmo, carp_timer_ad, vhe); |
865 | timeout_set_proc(&vhe->md_tmo, carp_timer_down, vhe); |
866 | timeout_set_proc(&vhe->md6_tmo, carp_timer_down, vhe); |
867 | |
868 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 868, "_kernel_lock_held()")); /* touching carp_vhosts */ |
869 | |
870 | /* mark the first vhe as leader */ |
871 | if (SRPL_EMPTY_LOCKED(&sc->carp_vhosts)(srp_get_locked(&(&sc->carp_vhosts)->sl_head) == ((void *)0))) { |
872 | vhe->vhe_leader = 1; |
873 | SRPL_INSERT_HEAD_LOCKED(&carp_vh_rc, &sc->carp_vhosts,do { void *head; srp_init(&(vhe)->vhost_entries.se_next ); head = srp_get_locked(&(&sc->carp_vhosts)->sl_head ); if (head != ((void *)0)) { (&carp_vh_rc)->srpl_ref( &(&carp_vh_rc)->srpl_gc.srp_gc_cookie, head); srp_update_locked (&(&carp_vh_rc)->srpl_gc, &(vhe)->vhost_entries .se_next, head); } (&carp_vh_rc)->srpl_ref(&(& carp_vh_rc)->srpl_gc.srp_gc_cookie, vhe); srp_update_locked (&(&carp_vh_rc)->srpl_gc, &(&sc->carp_vhosts )->sl_head, (vhe)); } while (0) |
874 | vhe, vhost_entries)do { void *head; srp_init(&(vhe)->vhost_entries.se_next ); head = srp_get_locked(&(&sc->carp_vhosts)->sl_head ); if (head != ((void *)0)) { (&carp_vh_rc)->srpl_ref( &(&carp_vh_rc)->srpl_gc.srp_gc_cookie, head); srp_update_locked (&(&carp_vh_rc)->srpl_gc, &(vhe)->vhost_entries .se_next, head); } (&carp_vh_rc)->srpl_ref(&(& carp_vh_rc)->srpl_gc.srp_gc_cookie, vhe); srp_update_locked (&(&carp_vh_rc)->srpl_gc, &(&sc->carp_vhosts )->sl_head, (vhe)); } while (0); |
875 | sc->sc_vhe_count = 1; |
876 | return (0); |
877 | } |
878 | |
879 | SRPL_FOREACH_LOCKED(vhe0, &sc->carp_vhosts, vhost_entries)for ((vhe0) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe0) != ((void *)0); (vhe0) = srp_get_locked(& ((vhe0))->vhost_entries.se_next)) { |
880 | if (SRPL_NEXT_LOCKED(vhe0, vhost_entries)srp_get_locked(&(vhe0)->vhost_entries.se_next) == NULL((void *)0)) |
881 | break; |
882 | } |
883 | |
884 | SRPL_INSERT_AFTER_LOCKED(&carp_vh_rc, vhe0, vhe, vhost_entries)do { void *next; srp_init(&(vhe)->vhost_entries.se_next ); next = srp_get_locked(&(vhe0)->vhost_entries.se_next ); if (next != ((void *)0)) { (&carp_vh_rc)->srpl_ref( &(&carp_vh_rc)->srpl_gc.srp_gc_cookie, next); srp_update_locked (&(&carp_vh_rc)->srpl_gc, &(vhe)->vhost_entries .se_next, next); } (&carp_vh_rc)->srpl_ref(&(& carp_vh_rc)->srpl_gc.srp_gc_cookie, vhe); srp_update_locked (&(&carp_vh_rc)->srpl_gc, &(vhe0)->vhost_entries .se_next, (vhe)); } while (0); |
885 | sc->sc_vhe_count++; |
886 | |
887 | return (0); |
888 | } |
889 | |
890 | int |
891 | carp_clone_destroy(struct ifnet *ifp) |
892 | { |
893 | struct carp_softc *sc = ifp->if_softc; |
894 | |
895 | if_addrhook_del(&sc->sc_ifsc_ac.ac_if, &sc->sc_atask); |
896 | |
897 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
898 | carpdetach(sc); |
899 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
900 | |
901 | ether_ifdetach(ifp); |
902 | if_detach(ifp); |
903 | carp_destroy_vhosts(ifp->if_softc); |
904 | refcnt_finalize(&sc->sc_refcnt, "carpdtor"); |
905 | free(sc->sc_imo.imo_membership, M_IPMOPTS53, |
906 | sc->sc_imo.imo_max_memberships * sizeof(struct in_multi *)); |
907 | free(sc, M_DEVBUF2, sizeof(*sc)); |
908 | return (0); |
909 | } |
910 | |
911 | void |
912 | carp_del_all_timeouts(struct carp_softc *sc) |
913 | { |
914 | struct carp_vhost_entry *vhe; |
915 | |
916 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 916, "_kernel_lock_held()")); /* touching carp_vhosts */ |
917 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
918 | timeout_del(&vhe->ad_tmo); |
919 | timeout_del(&vhe->md_tmo); |
920 | timeout_del(&vhe->md6_tmo); |
921 | } |
922 | } |
923 | |
924 | void |
925 | carpdetach(void *arg) |
926 | { |
927 | struct carp_softc *sc = arg; |
928 | struct ifnet *ifp0; |
929 | struct srpl *cif; |
930 | |
931 | carp_del_all_timeouts(sc); |
932 | |
933 | if (sc->sc_demote_cnt) |
934 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, -sc->sc_demote_cnt, "detach"); |
935 | sc->sc_suppress = 0; |
936 | sc->sc_sendad_errors = 0; |
937 | |
938 | carp_set_state_all(sc, INIT); |
939 | sc->sc_ifsc_ac.ac_if.if_flags &= ~IFF_UP0x1; |
940 | carp_setrun_all(sc, 0); |
941 | carp_multicast_cleanup(sc); |
942 | |
943 | ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx); |
944 | if (ifp0 == NULL((void *)0)) |
945 | return; |
946 | |
947 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 947, "_kernel_lock_held()")); /* touching if_carp */ |
948 | |
949 | cif = &ifp0->if_carpif_carp_ptr.carp_s; |
950 | |
951 | SRPL_REMOVE_LOCKED(&carp_sc_rc, cif, sc, carp_softc, sc_list)do { struct srp *ref; struct carp_softc *c, *n; ref = &(cif )->sl_head; while ((c = srp_get_locked(ref)) != (sc)) ref = &c->sc_list.se_next; n = srp_get_locked(&(c)-> sc_list.se_next); if (n != ((void *)0)) (&carp_sc_rc)-> srpl_ref(&(&carp_sc_rc)->srpl_gc.srp_gc_cookie, n) ; srp_update_locked(&(&carp_sc_rc)->srpl_gc, ref, n ); srp_update_locked(&(&carp_sc_rc)->srpl_gc, & c->sc_list.se_next, ((void *)0)); } while (0); |
952 | sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx = 0; |
953 | |
954 | if_linkstatehook_del(ifp0, &sc->sc_ltask); |
955 | if_detachhook_del(ifp0, &sc->sc_dtask); |
956 | ifpromisc(ifp0, 0); |
957 | if_put(ifp0); |
958 | } |
959 | |
960 | void |
961 | carp_destroy_vhosts(struct carp_softc *sc) |
962 | { |
963 | /* XXX bow out? */ |
964 | struct carp_vhost_entry *vhe; |
965 | |
966 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 966, "_kernel_lock_held()")); /* touching carp_vhosts */ |
967 | |
968 | while ((vhe = SRPL_FIRST_LOCKED(&sc->carp_vhosts)srp_get_locked(&(&sc->carp_vhosts)->sl_head)) != NULL((void *)0)) { |
969 | SRPL_REMOVE_LOCKED(&carp_vh_rc, &sc->carp_vhosts, vhe,do { struct srp *ref; struct carp_vhost_entry *c, *n; ref = & (&sc->carp_vhosts)->sl_head; while ((c = srp_get_locked (ref)) != (vhe)) ref = &c->vhost_entries.se_next; n = srp_get_locked (&(c)->vhost_entries.se_next); if (n != ((void *)0)) ( &carp_vh_rc)->srpl_ref(&(&carp_vh_rc)->srpl_gc .srp_gc_cookie, n); srp_update_locked(&(&carp_vh_rc)-> srpl_gc, ref, n); srp_update_locked(&(&carp_vh_rc)-> srpl_gc, &c->vhost_entries.se_next, ((void *)0)); } while (0) |
970 | carp_vhost_entry, vhost_entries)do { struct srp *ref; struct carp_vhost_entry *c, *n; ref = & (&sc->carp_vhosts)->sl_head; while ((c = srp_get_locked (ref)) != (vhe)) ref = &c->vhost_entries.se_next; n = srp_get_locked (&(c)->vhost_entries.se_next); if (n != ((void *)0)) ( &carp_vh_rc)->srpl_ref(&(&carp_vh_rc)->srpl_gc .srp_gc_cookie, n); srp_update_locked(&(&carp_vh_rc)-> srpl_gc, ref, n); srp_update_locked(&(&carp_vh_rc)-> srpl_gc, &c->vhost_entries.se_next, ((void *)0)); } while (0); |
971 | carp_vh_unref(NULL((void *)0), vhe); /* drop last ref */ |
972 | } |
973 | sc->sc_vhe_count = 0; |
974 | } |
975 | |
976 | void |
977 | carp_prepare_ad(struct mbuf *m, struct carp_vhost_entry *vhe, |
978 | struct carp_header *ch) |
979 | { |
980 | if (!vhe->vhe_replay_cookie) { |
981 | arc4random_buf(&vhe->vhe_replay_cookie, |
982 | sizeof(vhe->vhe_replay_cookie)); |
983 | } |
984 | |
985 | bcopy(&vhe->vhe_replay_cookie, ch->carp_counter, |
986 | sizeof(ch->carp_counter)); |
987 | |
988 | /* |
989 | * For the time being, do not include the IPv6 linklayer addresses |
990 | * in the HMAC. |
991 | */ |
992 | carp_hmac_generate(vhe, ch->carp_counter, ch->carp_md, HMAC_NOV6LL); |
993 | } |
994 | |
995 | void |
996 | carp_send_ad_all(void) |
997 | { |
998 | struct ifnet *ifp0; |
999 | struct srpl *cif; |
1000 | struct carp_softc *vh; |
1001 | |
1002 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1002, "_kernel_lock_held()")); /* touching if_carp */ |
1003 | |
1004 | if (carp_send_all_recur > 0) |
1005 | return; |
1006 | ++carp_send_all_recur; |
1007 | TAILQ_FOREACH(ifp0, &ifnetlist, if_list)for((ifp0) = ((&ifnetlist)->tqh_first); (ifp0) != ((void *)0); (ifp0) = ((ifp0)->if_list.tqe_next)) { |
1008 | if (ifp0->if_typeif_data.ifi_type != IFT_ETHER0x06) |
1009 | continue; |
1010 | |
1011 | cif = &ifp0->if_carpif_carp_ptr.carp_s; |
1012 | SRPL_FOREACH_LOCKED(vh, cif, sc_list)for ((vh) = srp_get_locked(&(cif)->sl_head); (vh) != ( (void *)0); (vh) = srp_get_locked(&((vh))->sc_list.se_next )) { |
1013 | if ((vh->sc_ifsc_ac.ac_if.if_flags & (IFF_UP0x1|IFF_RUNNING0x40)) == |
1014 | (IFF_UP0x1|IFF_RUNNING0x40)) { |
1015 | carp_vhe_send_ad_all(vh); |
1016 | } |
1017 | } |
1018 | } |
1019 | --carp_send_all_recur; |
1020 | } |
1021 | |
1022 | void |
1023 | carp_vhe_send_ad_all(struct carp_softc *sc) |
1024 | { |
1025 | struct carp_vhost_entry *vhe; |
1026 | |
1027 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1027, "_kernel_lock_held()")); /* touching carp_vhosts */ |
1028 | |
1029 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
1030 | if (vhe->state == MASTER) |
1031 | carp_send_ad(vhe); |
1032 | } |
1033 | } |
1034 | |
1035 | void |
1036 | carp_timer_ad(void *v) |
1037 | { |
1038 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
1039 | carp_send_ad(v); |
1040 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
1041 | } |
1042 | |
1043 | void |
1044 | carp_send_ad(struct carp_vhost_entry *vhe) |
1045 | { |
1046 | struct carp_header ch; |
1047 | struct timeval tv; |
1048 | struct carp_softc *sc = vhe->parent_sc; |
1049 | struct carp_header *ch_ptr; |
1050 | struct mbuf *m; |
1051 | int error, len, advbase, advskew; |
1052 | struct ifnet *ifp; |
1053 | struct ifaddr *ifa; |
1054 | struct sockaddr sa; |
1055 | |
1056 | NET_ASSERT_LOCKED()do { int _s = rw_status(&netlock); if ((splassert_ctl > 0) && (_s != 0x0001UL && _s != 0x0002UL)) splassert_fail (0x0002UL, _s, __func__); } while (0); |
1057 | |
1058 | if ((ifp = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) == NULL((void *)0)) { |
1059 | sc->sc_ifsc_ac.ac_if.if_oerrorsif_data.ifi_oerrors++; |
1060 | return; |
1061 | } |
1062 | |
1063 | /* bow out if we've gone to backup (the carp interface is going down) */ |
1064 | if (sc->sc_bow_out) { |
1065 | advbase = 255; |
1066 | advskew = 255; |
1067 | } else { |
1068 | advbase = sc->sc_advbase; |
1069 | advskew = vhe->advskew; |
1070 | tv.tv_sec = advbase; |
1071 | if (advbase == 0 && advskew == 0) |
1072 | tv.tv_usec = 1 * 1000000 / 256; |
1073 | else |
1074 | tv.tv_usec = advskew * 1000000 / 256; |
1075 | } |
1076 | |
1077 | ch.carp_version = CARP_VERSION2; |
1078 | ch.carp_type = CARP_ADVERTISEMENT0x01; |
1079 | ch.carp_vhid = vhe->vhid; |
1080 | ch.carp_demote = carp_group_demote_count(sc) & 0xff; |
1081 | ch.carp_advbase = advbase; |
1082 | ch.carp_advskew = advskew; |
1083 | ch.carp_authlen = 7; /* XXX DEFINE */ |
1084 | ch.carp_cksum = 0; |
1085 | |
1086 | sc->cur_vhe = vhe; /* we need the vhe later on the output path */ |
1087 | |
1088 | if (sc->sc_naddrs) { |
1089 | struct ip *ip; |
1090 | |
1091 | MGETHDR(m, M_DONTWAIT, MT_HEADER)m = m_gethdr((0x0002), (2)); |
1092 | if (m == NULL((void *)0)) { |
1093 | sc->sc_ifsc_ac.ac_if.if_oerrorsif_data.ifi_oerrors++; |
1094 | carpstat_inc(carps_onomem); |
1095 | /* XXX maybe less ? */ |
1096 | goto retry_later; |
1097 | } |
1098 | len = sizeof(*ip) + sizeof(ch); |
1099 | m->m_pkthdrM_dat.MH.MH_pkthdr.pf.prio = CARP_IFQ_PRIO6; |
1100 | m->m_pkthdrM_dat.MH.MH_pkthdr.ph_rtableid = sc->sc_ifsc_ac.ac_if.if_rdomainif_data.ifi_rdomain; |
1101 | m->m_pkthdrM_dat.MH.MH_pkthdr.len = len; |
1102 | m->m_lenm_hdr.mh_len = len; |
1103 | m_align(m, len); |
1104 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); |
1105 | ip->ip_v = IPVERSION4; |
1106 | ip->ip_hl = sizeof(*ip) >> 2; |
1107 | ip->ip_tos = IPTOS_LOWDELAY0x10; |
1108 | ip->ip_len = htons(len)(__uint16_t)(__builtin_constant_p(len) ? (__uint16_t)(((__uint16_t )(len) & 0xffU) << 8 | ((__uint16_t)(len) & 0xff00U ) >> 8) : __swap16md(len)); |
1109 | ip->ip_id = htons(ip_randomid())(__uint16_t)(__builtin_constant_p(ip_randomid()) ? (__uint16_t )(((__uint16_t)(ip_randomid()) & 0xffU) << 8 | ((__uint16_t )(ip_randomid()) & 0xff00U) >> 8) : __swap16md(ip_randomid ())); |
1110 | ip->ip_off = htons(IP_DF)(__uint16_t)(__builtin_constant_p(0x4000) ? (__uint16_t)(((__uint16_t )(0x4000) & 0xffU) << 8 | ((__uint16_t)(0x4000) & 0xff00U) >> 8) : __swap16md(0x4000)); |
1111 | ip->ip_ttl = CARP_DFLTTL255; |
1112 | ip->ip_p = IPPROTO_CARP112; |
1113 | ip->ip_sum = 0; |
1114 | |
1115 | memset(&sa, 0, sizeof(sa))__builtin_memset((&sa), (0), (sizeof(sa))); |
1116 | sa.sa_family = AF_INET2; |
1117 | /* Prefer addresses on the parent interface as source for AD. */ |
1118 | ifa = ifaof_ifpforaddr(&sa, ifp); |
1119 | if (ifa == NULL((void *)0)) |
1120 | ifa = ifaof_ifpforaddr(&sa, &sc->sc_ifsc_ac.ac_if); |
1121 | KASSERT(ifa != NULL)((ifa != ((void *)0)) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1121, "ifa != NULL")); |
1122 | ip->ip_src.s_addr = ifatoia(ifa)->ia_addr.sin_addr.s_addr; |
1123 | ip->ip_dst.s_addr = sc->sc_peer.s_addr; |
1124 | if (IN_MULTICAST(ip->ip_dst.s_addr)(((u_int32_t)(ip->ip_dst.s_addr) & ((u_int32_t) (__uint32_t )(__builtin_constant_p((u_int32_t)(0xf0000000)) ? (__uint32_t )(((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xf0000000))))) == ((u_int32_t ) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000000)) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff ) << 24 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff00 ) << 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff0000 ) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff000000 ) >> 24) : __swap32md((u_int32_t)(0xe0000000)))))) |
1125 | m->m_flagsm_hdr.mh_flags |= M_MCAST0x0200; |
1126 | |
1127 | ch_ptr = (struct carp_header *)(ip + 1); |
1128 | bcopy(&ch, ch_ptr, sizeof(ch)); |
1129 | carp_prepare_ad(m, vhe, ch_ptr); |
1130 | |
1131 | m->m_datam_hdr.mh_data += sizeof(*ip); |
1132 | ch_ptr->carp_cksum = carp_cksum(m, len - sizeof(*ip))((u_int16_t)in_cksum((m), (len - sizeof(*ip)))); |
1133 | m->m_datam_hdr.mh_data -= sizeof(*ip); |
1134 | |
1135 | getmicrotime(&sc->sc_ifsc_ac.ac_if.if_lastchangeif_data.ifi_lastchange); |
1136 | carpstat_inc(carps_opackets); |
1137 | |
1138 | error = ip_output(m, NULL((void *)0), NULL((void *)0), IP_RAWOUTPUT0x2, &sc->sc_imo, |
1139 | NULL((void *)0), 0); |
1140 | if (error && |
1141 | /* when unicast, the peer's down is not our fault */ |
1142 | !(!IN_MULTICAST(sc->sc_peer.s_addr)(((u_int32_t)(sc->sc_peer.s_addr) & ((u_int32_t) (__uint32_t )(__builtin_constant_p((u_int32_t)(0xf0000000)) ? (__uint32_t )(((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xf0000000))))) == ((u_int32_t ) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000000)) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff ) << 24 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff00 ) << 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff0000 ) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff000000 ) >> 24) : __swap32md((u_int32_t)(0xe0000000))))) && error == EHOSTDOWN64)){ |
1143 | if (error == ENOBUFS55) |
1144 | carpstat_inc(carps_onomem); |
1145 | else |
1146 | CARP_LOG(LOG_WARNING, sc,do { if (carp_opts[3] >= 4) { if (sc) log(4, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(4, "carp: "); addlog ("ip_output failed: %d" , error); addlog("\n"); } } while (0) |
1147 | ("ip_output failed: %d", error))do { if (carp_opts[3] >= 4) { if (sc) log(4, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(4, "carp: "); addlog ("ip_output failed: %d" , error); addlog("\n"); } } while (0); |
1148 | sc->sc_ifsc_ac.ac_if.if_oerrorsif_data.ifi_oerrors++; |
1149 | if (sc->sc_sendad_errors < INT_MAX0x7fffffff) |
1150 | sc->sc_sendad_errors++; |
1151 | if (sc->sc_sendad_errors == CARP_SENDAD_MAX_ERRORS(sc)(3 * (sc)->sc_vhe_count)) |
1152 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, 1, |
1153 | "> snderrors"); |
1154 | sc->sc_sendad_success = 0; |
1155 | } else { |
1156 | if (sc->sc_sendad_errors >= CARP_SENDAD_MAX_ERRORS(sc)(3 * (sc)->sc_vhe_count)) { |
1157 | if (++sc->sc_sendad_success >= |
1158 | CARP_SENDAD_MIN_SUCCESS(sc)(3 * (sc)->sc_vhe_count)) { |
1159 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, -1, |
1160 | "< snderrors"); |
1161 | sc->sc_sendad_errors = 0; |
1162 | } |
1163 | } else |
1164 | sc->sc_sendad_errors = 0; |
1165 | } |
1166 | if (vhe->vhe_leader) { |
1167 | if (sc->sc_delayed_arp > 0) |
1168 | sc->sc_delayed_arp--; |
1169 | if (sc->sc_delayed_arp == 0) { |
1170 | carp_send_arp(sc); |
1171 | sc->sc_delayed_arp = -1; |
1172 | } |
1173 | } |
1174 | } |
1175 | #ifdef INET61 |
1176 | if (sc->sc_naddrs6) { |
1177 | struct ip6_hdr *ip6; |
1178 | |
1179 | MGETHDR(m, M_DONTWAIT, MT_HEADER)m = m_gethdr((0x0002), (2)); |
1180 | if (m == NULL((void *)0)) { |
1181 | sc->sc_ifsc_ac.ac_if.if_oerrorsif_data.ifi_oerrors++; |
1182 | carpstat_inc(carps_onomem); |
1183 | /* XXX maybe less ? */ |
1184 | goto retry_later; |
1185 | } |
1186 | len = sizeof(*ip6) + sizeof(ch); |
1187 | m->m_pkthdrM_dat.MH.MH_pkthdr.pf.prio = CARP_IFQ_PRIO6; |
1188 | m->m_pkthdrM_dat.MH.MH_pkthdr.ph_rtableid = sc->sc_ifsc_ac.ac_if.if_rdomainif_data.ifi_rdomain; |
1189 | m->m_pkthdrM_dat.MH.MH_pkthdr.len = len; |
1190 | m->m_lenm_hdr.mh_len = len; |
1191 | m_align(m, len); |
1192 | m->m_flagsm_hdr.mh_flags |= M_MCAST0x0200; |
1193 | ip6 = mtod(m, struct ip6_hdr *)((struct ip6_hdr *)((m)->m_hdr.mh_data)); |
1194 | memset(ip6, 0, sizeof(*ip6))__builtin_memset((ip6), (0), (sizeof(*ip6))); |
1195 | ip6->ip6_vfcip6_ctlun.ip6_un2_vfc |= IPV6_VERSION0x60; |
1196 | ip6->ip6_hlimip6_ctlun.ip6_un1.ip6_un1_hlim = CARP_DFLTTL255; |
1197 | ip6->ip6_nxtip6_ctlun.ip6_un1.ip6_un1_nxt = IPPROTO_CARP112; |
1198 | |
1199 | /* set the source address */ |
1200 | memset(&sa, 0, sizeof(sa))__builtin_memset((&sa), (0), (sizeof(sa))); |
1201 | sa.sa_family = AF_INET624; |
1202 | /* Prefer addresses on the parent interface as source for AD. */ |
1203 | ifa = ifaof_ifpforaddr(&sa, ifp); |
1204 | if (ifa == NULL((void *)0)) |
1205 | ifa = ifaof_ifpforaddr(&sa, &sc->sc_ifsc_ac.ac_if); |
1206 | KASSERT(ifa != NULL)((ifa != ((void *)0)) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1206, "ifa != NULL")); |
1207 | bcopy(ifatoia6(ifa)->ia_addr.sin6_addr.s6_addr__u6_addr.__u6_addr8, |
1208 | &ip6->ip6_src, sizeof(struct in6_addr)); |
1209 | /* set the multicast destination */ |
1210 | |
1211 | ip6->ip6_dst.s6_addr16__u6_addr.__u6_addr16[0] = htons(0xff02)(__uint16_t)(__builtin_constant_p(0xff02) ? (__uint16_t)(((__uint16_t )(0xff02) & 0xffU) << 8 | ((__uint16_t)(0xff02) & 0xff00U) >> 8) : __swap16md(0xff02)); |
1212 | ip6->ip6_dst.s6_addr16__u6_addr.__u6_addr16[1] = htons(ifp->if_index)(__uint16_t)(__builtin_constant_p(ifp->if_index) ? (__uint16_t )(((__uint16_t)(ifp->if_index) & 0xffU) << 8 | ( (__uint16_t)(ifp->if_index) & 0xff00U) >> 8) : __swap16md (ifp->if_index)); |
1213 | ip6->ip6_dst.s6_addr8__u6_addr.__u6_addr8[15] = 0x12; |
1214 | |
1215 | ch_ptr = (struct carp_header *)(ip6 + 1); |
1216 | bcopy(&ch, ch_ptr, sizeof(ch)); |
1217 | carp_prepare_ad(m, vhe, ch_ptr); |
1218 | |
1219 | m->m_datam_hdr.mh_data += sizeof(*ip6); |
1220 | ch_ptr->carp_cksum = carp_cksum(m, len - sizeof(*ip6))((u_int16_t)in_cksum((m), (len - sizeof(*ip6)))); |
1221 | m->m_datam_hdr.mh_data -= sizeof(*ip6); |
1222 | |
1223 | getmicrotime(&sc->sc_ifsc_ac.ac_if.if_lastchangeif_data.ifi_lastchange); |
1224 | carpstat_inc(carps_opackets6); |
1225 | |
1226 | error = ip6_output(m, NULL((void *)0), NULL((void *)0), 0, &sc->sc_im6o, NULL((void *)0)); |
1227 | if (error) { |
1228 | if (error == ENOBUFS55) |
1229 | carpstat_inc(carps_onomem); |
1230 | else |
1231 | CARP_LOG(LOG_WARNING, sc,do { if (carp_opts[3] >= 4) { if (sc) log(4, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(4, "carp: "); addlog ("ip6_output failed: %d" , error); addlog("\n"); } } while (0) |
1232 | ("ip6_output failed: %d", error))do { if (carp_opts[3] >= 4) { if (sc) log(4, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(4, "carp: "); addlog ("ip6_output failed: %d" , error); addlog("\n"); } } while (0); |
1233 | sc->sc_ifsc_ac.ac_if.if_oerrorsif_data.ifi_oerrors++; |
1234 | if (sc->sc_sendad_errors < INT_MAX0x7fffffff) |
1235 | sc->sc_sendad_errors++; |
1236 | if (sc->sc_sendad_errors == CARP_SENDAD_MAX_ERRORS(sc)(3 * (sc)->sc_vhe_count)) |
1237 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, 1, |
1238 | "> snd6errors"); |
1239 | sc->sc_sendad_success = 0; |
1240 | } else { |
1241 | if (sc->sc_sendad_errors >= CARP_SENDAD_MAX_ERRORS(sc)(3 * (sc)->sc_vhe_count)) { |
1242 | if (++sc->sc_sendad_success >= |
1243 | CARP_SENDAD_MIN_SUCCESS(sc)(3 * (sc)->sc_vhe_count)) { |
1244 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, -1, |
1245 | "< snd6errors"); |
1246 | sc->sc_sendad_errors = 0; |
1247 | } |
1248 | } else |
1249 | sc->sc_sendad_errors = 0; |
1250 | } |
1251 | } |
1252 | #endif /* INET6 */ |
1253 | |
1254 | retry_later: |
1255 | sc->cur_vhe = NULL((void *)0); |
1256 | if (advbase != 255 || advskew != 255) |
1257 | timeout_add_tv(&vhe->ad_tmo, &tv); |
1258 | if_put(ifp); |
1259 | } |
1260 | |
1261 | /* |
1262 | * Broadcast a gratuitous ARP request containing |
1263 | * the virtual router MAC address for each IP address |
1264 | * associated with the virtual router. |
1265 | */ |
1266 | void |
1267 | carp_send_arp(struct carp_softc *sc) |
1268 | { |
1269 | struct ifaddr *ifa; |
1270 | in_addr_t in; |
1271 | |
1272 | TAILQ_FOREACH(ifa, &sc->sc_if.if_addrlist, ifa_list)for((ifa) = ((&sc->sc_ac.ac_if.if_addrlist)->tqh_first ); (ifa) != ((void *)0); (ifa) = ((ifa)->ifa_list.tqe_next )) { |
1273 | |
1274 | if (ifa->ifa_addr->sa_family != AF_INET2) |
1275 | continue; |
1276 | |
1277 | in = ifatoia(ifa)->ia_addr.sin_addr.s_addr; |
1278 | arprequest(&sc->sc_ifsc_ac.ac_if, &in, &in, sc->sc_ac.ac_enaddr); |
1279 | } |
1280 | } |
1281 | |
1282 | #ifdef INET61 |
1283 | void |
1284 | carp_send_na(struct carp_softc *sc) |
1285 | { |
1286 | struct ifaddr *ifa; |
1287 | struct in6_addr *in6; |
1288 | static struct in6_addr mcast = IN6ADDR_LINKLOCAL_ALLNODES_INIT{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 , 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}; |
1289 | |
1290 | TAILQ_FOREACH(ifa, &sc->sc_if.if_addrlist, ifa_list)for((ifa) = ((&sc->sc_ac.ac_if.if_addrlist)->tqh_first ); (ifa) != ((void *)0); (ifa) = ((ifa)->ifa_list.tqe_next )) { |
1291 | |
1292 | if (ifa->ifa_addr->sa_family != AF_INET624) |
1293 | continue; |
1294 | |
1295 | in6 = &ifatoia6(ifa)->ia_addr.sin6_addr; |
1296 | nd6_na_output(&sc->sc_ifsc_ac.ac_if, &mcast, in6, |
1297 | ND_NA_FLAG_OVERRIDE(__uint32_t)(__builtin_constant_p(0x20000000) ? (__uint32_t)( ((__uint32_t)(0x20000000) & 0xff) << 24 | ((__uint32_t )(0x20000000) & 0xff00) << 8 | ((__uint32_t)(0x20000000 ) & 0xff0000) >> 8 | ((__uint32_t)(0x20000000) & 0xff000000) >> 24) : __swap32md(0x20000000)) | |
1298 | (ip6_forwarding ? ND_NA_FLAG_ROUTER(__uint32_t)(__builtin_constant_p(0x80000000) ? (__uint32_t)( ((__uint32_t)(0x80000000) & 0xff) << 24 | ((__uint32_t )(0x80000000) & 0xff00) << 8 | ((__uint32_t)(0x80000000 ) & 0xff0000) >> 8 | ((__uint32_t)(0x80000000) & 0xff000000) >> 24) : __swap32md(0x80000000)) : 0), 1, NULL((void *)0)); |
1299 | } |
1300 | } |
1301 | #endif /* INET6 */ |
1302 | |
1303 | void |
1304 | carp_update_lsmask(struct carp_softc *sc) |
1305 | { |
1306 | struct carp_vhost_entry *vhe; |
1307 | int count; |
1308 | |
1309 | if (sc->sc_balancing == CARP_BAL_NONE0) |
1310 | return; |
1311 | |
1312 | sc->sc_lsmask = 0; |
1313 | count = 0; |
1314 | |
1315 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1315, "_kernel_lock_held()")); /* touching carp_vhosts */ |
1316 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
1317 | if (vhe->state == MASTER && count < sizeof(sc->sc_lsmask) * 8) |
1318 | sc->sc_lsmask |= 1 << count; |
1319 | count++; |
1320 | } |
1321 | sc->sc_lscount = count; |
1322 | CARP_LOG(LOG_DEBUG, sc, ("carp_update_lsmask: %x", sc->sc_lsmask))do { if (carp_opts[3] >= 7) { if (sc) log(7, "%s: ", (sc)-> sc_ac.ac_if.if_xname); else log(7, "carp: "); addlog ("carp_update_lsmask: %x" , sc->sc_lsmask); addlog("\n"); } } while (0); |
1323 | } |
1324 | |
1325 | int |
1326 | carp_iamatch(struct ifnet *ifp) |
1327 | { |
1328 | struct carp_softc *sc = ifp->if_softc; |
1329 | struct carp_vhost_entry *vhe; |
1330 | struct srp_ref sr; |
1331 | int match = 0; |
1332 | |
1333 | vhe = SRPL_FIRST(&sr, &sc->carp_vhosts)srp_enter((&sr), &(&sc->carp_vhosts)->sl_head ); |
1334 | if (vhe->state == MASTER) |
1335 | match = 1; |
1336 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
1337 | |
1338 | return (match); |
1339 | } |
1340 | |
1341 | int |
1342 | carp_ourether(struct ifnet *ifp, uint8_t *ena) |
1343 | { |
1344 | struct srpl *cif = &ifp->if_carpif_carp_ptr.carp_s; |
1345 | struct carp_softc *sc; |
1346 | struct srp_ref sr; |
1347 | int match = 0; |
1348 | uint64_t dst = ether_addr_to_e64((struct ether_addr *)ena); |
1349 | |
1350 | KASSERT(ifp->if_type == IFT_ETHER)((ifp->if_data.ifi_type == 0x06) ? (void)0 : __assert("diagnostic " , "/usr/src/sys/netinet/ip_carp.c", 1350, "ifp->if_type == IFT_ETHER" )); |
1351 | |
1352 | SRPL_FOREACH(sc, &sr, cif, sc_list)for ((sc) = srp_enter((&sr), &(cif)->sl_head); (sc ) != ((void *)0); (sc) = srp_follow((&sr), &(sc)-> sc_list.se_next)) { |
1353 | if ((sc->sc_ifsc_ac.ac_if.if_flags & (IFF_UP0x1|IFF_RUNNING0x40)) != |
1354 | (IFF_UP0x1|IFF_RUNNING0x40)) |
1355 | continue; |
1356 | if (carp_vhe_match(sc, dst)) { |
1357 | match = 1; |
1358 | break; |
1359 | } |
1360 | } |
1361 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
1362 | |
1363 | return (match); |
1364 | } |
1365 | |
1366 | int |
1367 | carp_vhe_match(struct carp_softc *sc, uint64_t dst) |
1368 | { |
1369 | struct carp_vhost_entry *vhe; |
1370 | struct srp_ref sr; |
1371 | int active = 0; |
1372 | |
1373 | vhe = SRPL_FIRST(&sr, &sc->carp_vhosts)srp_enter((&sr), &(&sc->carp_vhosts)->sl_head ); |
1374 | active = (vhe->state == MASTER || sc->sc_balancing >= CARP_BAL_IP1); |
1375 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
1376 | |
1377 | return (active && (dst == |
1378 | ether_addr_to_e64((struct ether_addr *)sc->sc_ac.ac_enaddr))); |
1379 | } |
1380 | |
1381 | struct mbuf * |
1382 | carp_input(struct ifnet *ifp0, struct mbuf *m, uint64_t dst) |
1383 | { |
1384 | struct srpl *cif; |
1385 | struct carp_softc *sc; |
1386 | struct srp_ref sr; |
1387 | |
1388 | cif = &ifp0->if_carpif_carp_ptr.carp_s; |
1389 | |
1390 | SRPL_FOREACH(sc, &sr, cif, sc_list)for ((sc) = srp_enter((&sr), &(cif)->sl_head); (sc ) != ((void *)0); (sc) = srp_follow((&sr), &(sc)-> sc_list.se_next)) { |
1391 | if ((sc->sc_ifsc_ac.ac_if.if_flags & (IFF_UP0x1|IFF_RUNNING0x40)) != |
1392 | (IFF_UP0x1|IFF_RUNNING0x40)) |
1393 | continue; |
1394 | |
1395 | if (carp_vhe_match(sc, dst)) { |
1396 | /* |
1397 | * These packets look like layer 2 multicast but they |
1398 | * are unicast at layer 3. With help of the tag the |
1399 | * mbuf's M_MCAST flag can be removed by carp_lsdrop() |
1400 | * after we have passed layer 2. |
1401 | */ |
1402 | if (sc->sc_balancing == CARP_BAL_IP1) { |
1403 | struct m_tag *mtag; |
1404 | mtag = m_tag_get(PACKET_TAG_CARP_BAL_IP0x4000, 0, |
1405 | M_NOWAIT0x0002); |
1406 | if (mtag == NULL((void *)0)) { |
1407 | m_freem(m); |
1408 | goto out; |
1409 | } |
1410 | m_tag_prepend(m, mtag); |
1411 | } |
1412 | break; |
1413 | } |
1414 | } |
1415 | |
1416 | if (sc == NULL((void *)0)) { |
1417 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
1418 | |
1419 | if (!ETH64_IS_MULTICAST(dst)((dst) & 0x010000000000ULL)) |
1420 | return (m); |
1421 | |
1422 | /* |
1423 | * XXX Should really check the list of multicast addresses |
1424 | * for each CARP interface _before_ copying. |
1425 | */ |
1426 | SRPL_FOREACH(sc, &sr, cif, sc_list)for ((sc) = srp_enter((&sr), &(cif)->sl_head); (sc ) != ((void *)0); (sc) = srp_follow((&sr), &(sc)-> sc_list.se_next)) { |
1427 | struct mbuf *m0; |
1428 | |
1429 | if (!(sc->sc_ifsc_ac.ac_if.if_flags & IFF_UP0x1)) |
1430 | continue; |
1431 | |
1432 | m0 = m_dup_pkt(m, ETHER_ALIGN2, M_DONTWAIT0x0002); |
1433 | if (m0 == NULL((void *)0)) |
1434 | continue; |
1435 | |
1436 | if_vinput(&sc->sc_ifsc_ac.ac_if, m0); |
1437 | } |
1438 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
1439 | |
1440 | return (m); |
1441 | } |
1442 | |
1443 | if_vinput(&sc->sc_ifsc_ac.ac_if, m); |
1444 | out: |
1445 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
1446 | |
1447 | return (NULL((void *)0)); |
1448 | } |
1449 | |
1450 | int |
1451 | carp_lsdrop(struct ifnet *ifp, struct mbuf *m, sa_family_t af, u_int32_t *src, |
1452 | u_int32_t *dst, int drop) |
1453 | { |
1454 | struct carp_softc *sc; |
1455 | u_int32_t fold; |
1456 | struct m_tag *mtag; |
1457 | |
1458 | if (ifp->if_typeif_data.ifi_type != IFT_CARP0xf7) |
1459 | return 0; |
1460 | sc = ifp->if_softc; |
1461 | if (sc->sc_balancing == CARP_BAL_NONE0) |
1462 | return 0; |
1463 | |
1464 | /* |
1465 | * Remove M_MCAST flag from mbuf of balancing ip traffic, since the fact |
1466 | * that it is layer 2 multicast does not implicate that it is also layer |
1467 | * 3 multicast. |
1468 | */ |
1469 | if (m->m_flagsm_hdr.mh_flags & M_MCAST0x0200 && |
1470 | (mtag = m_tag_find(m, PACKET_TAG_CARP_BAL_IP0x4000, NULL((void *)0)))) { |
1471 | m_tag_delete(m, mtag); |
1472 | m->m_flagsm_hdr.mh_flags &= ~M_MCAST0x0200; |
1473 | } |
1474 | |
1475 | /* |
1476 | * Return without making a drop decision. This allows to clear the |
1477 | * M_MCAST flag and do nothing else. |
1478 | */ |
1479 | if (!drop) |
1480 | return 0; |
1481 | |
1482 | /* |
1483 | * Never drop carp advertisements. |
1484 | * XXX Bad idea to pass all broadcast / multicast traffic? |
1485 | */ |
1486 | if (m->m_flagsm_hdr.mh_flags & (M_BCAST0x0100|M_MCAST0x0200)) |
1487 | return 0; |
1488 | |
1489 | fold = src[0] ^ dst[0]; |
1490 | #ifdef INET61 |
1491 | if (af == AF_INET624) { |
1492 | int i; |
1493 | for (i = 1; i < 4; i++) |
1494 | fold ^= src[i] ^ dst[i]; |
1495 | } |
1496 | #endif |
1497 | if (sc->sc_lscount == 0) /* just to be safe */ |
1498 | return 1; |
1499 | |
1500 | return ((1 << (ntohl(fold)(__uint32_t)(__builtin_constant_p(fold) ? (__uint32_t)(((__uint32_t )(fold) & 0xff) << 24 | ((__uint32_t)(fold) & 0xff00 ) << 8 | ((__uint32_t)(fold) & 0xff0000) >> 8 | ((__uint32_t)(fold) & 0xff000000) >> 24) : __swap32md (fold)) % sc->sc_lscount)) & sc->sc_lsmask) == 0; |
1501 | } |
1502 | |
1503 | void |
1504 | carp_timer_down(void *v) |
1505 | { |
1506 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); |
1507 | carp_master_down(v); |
1508 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); |
1509 | } |
1510 | |
1511 | void |
1512 | carp_master_down(struct carp_vhost_entry *vhe) |
1513 | { |
1514 | struct carp_softc *sc = vhe->parent_sc; |
1515 | |
1516 | NET_ASSERT_LOCKED()do { int _s = rw_status(&netlock); if ((splassert_ctl > 0) && (_s != 0x0001UL && _s != 0x0002UL)) splassert_fail (0x0002UL, _s, __func__); } while (0); |
1517 | |
1518 | switch (vhe->state) { |
1519 | case INIT: |
1520 | printf("%s: master_down event in INIT state\n", |
1521 | sc->sc_ifsc_ac.ac_if.if_xname); |
1522 | break; |
1523 | case MASTER: |
1524 | break; |
1525 | case BACKUP: |
1526 | carp_set_state(vhe, MASTER); |
1527 | carp_send_ad(vhe); |
1528 | if (sc->sc_balancing == CARP_BAL_NONE0 && vhe->vhe_leader) { |
1529 | carp_send_arp(sc); |
1530 | /* Schedule a delayed ARP to deal w/ some L3 switches */ |
1531 | sc->sc_delayed_arp = 2; |
1532 | #ifdef INET61 |
1533 | carp_send_na(sc); |
1534 | #endif /* INET6 */ |
1535 | } |
1536 | carp_setrun(vhe, 0); |
1537 | carpstat_inc(carps_preempt); |
1538 | break; |
1539 | } |
1540 | } |
1541 | |
1542 | void |
1543 | carp_setrun_all(struct carp_softc *sc, sa_family_t af) |
1544 | { |
1545 | struct carp_vhost_entry *vhe; |
1546 | |
1547 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1547, "_kernel_lock_held()")); /* touching carp_vhost */ |
1548 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
1549 | carp_setrun(vhe, af); |
1550 | } |
1551 | } |
1552 | |
1553 | /* |
1554 | * When in backup state, af indicates whether to reset the master down timer |
1555 | * for v4 or v6. If it's set to zero, reset the ones which are already pending. |
1556 | */ |
1557 | void |
1558 | carp_setrun(struct carp_vhost_entry *vhe, sa_family_t af) |
1559 | { |
1560 | struct ifnet *ifp; |
1561 | struct timeval tv; |
1562 | struct carp_softc *sc = vhe->parent_sc; |
1563 | |
1564 | if ((ifp = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) == NULL((void *)0)) { |
1565 | sc->sc_ifsc_ac.ac_if.if_flags &= ~IFF_RUNNING0x40; |
1566 | carp_set_state_all(sc, INIT); |
1567 | return; |
1568 | } |
1569 | |
1570 | if (memcmp(((struct arpcom *)ifp)->ac_enaddr,__builtin_memcmp((((struct arpcom *)ifp)->ac_enaddr), (sc-> sc_ac.ac_enaddr), (6)) |
1571 | sc->sc_ac.ac_enaddr, ETHER_ADDR_LEN)__builtin_memcmp((((struct arpcom *)ifp)->ac_enaddr), (sc-> sc_ac.ac_enaddr), (6)) == 0) |
1572 | sc->sc_realmac = 1; |
1573 | else |
1574 | sc->sc_realmac = 0; |
1575 | |
1576 | if_put(ifp); |
1577 | |
1578 | if (sc->sc_ifsc_ac.ac_if.if_flags & IFF_UP0x1 && vhe->vhid > 0 && |
1579 | (sc->sc_naddrs || sc->sc_naddrs6) && !sc->sc_suppress) { |
1580 | sc->sc_ifsc_ac.ac_if.if_flags |= IFF_RUNNING0x40; |
1581 | } else { |
1582 | sc->sc_ifsc_ac.ac_if.if_flags &= ~IFF_RUNNING0x40; |
1583 | return; |
1584 | } |
1585 | |
1586 | switch (vhe->state) { |
1587 | case INIT: |
1588 | carp_set_state(vhe, BACKUP); |
1589 | carp_setrun(vhe, 0); |
1590 | break; |
1591 | case BACKUP: |
1592 | timeout_del(&vhe->ad_tmo); |
1593 | tv.tv_sec = 3 * sc->sc_advbase; |
1594 | if (sc->sc_advbase == 0 && vhe->advskew == 0) |
1595 | tv.tv_usec = 3 * 1000000 / 256; |
1596 | else if (sc->sc_advbase == 0) |
1597 | tv.tv_usec = 3 * vhe->advskew * 1000000 / 256; |
1598 | else |
1599 | tv.tv_usec = vhe->advskew * 1000000 / 256; |
1600 | if (vhe->vhe_leader) |
1601 | sc->sc_delayed_arp = -1; |
1602 | switch (af) { |
1603 | case AF_INET2: |
1604 | timeout_add_tv(&vhe->md_tmo, &tv); |
1605 | break; |
1606 | #ifdef INET61 |
1607 | case AF_INET624: |
1608 | timeout_add_tv(&vhe->md6_tmo, &tv); |
1609 | break; |
1610 | #endif /* INET6 */ |
1611 | default: |
1612 | if (sc->sc_naddrs) |
1613 | timeout_add_tv(&vhe->md_tmo, &tv); |
1614 | if (sc->sc_naddrs6) |
1615 | timeout_add_tv(&vhe->md6_tmo, &tv); |
1616 | break; |
1617 | } |
1618 | break; |
1619 | case MASTER: |
1620 | tv.tv_sec = sc->sc_advbase; |
1621 | if (sc->sc_advbase == 0 && vhe->advskew == 0) |
1622 | tv.tv_usec = 1 * 1000000 / 256; |
1623 | else |
1624 | tv.tv_usec = vhe->advskew * 1000000 / 256; |
1625 | timeout_add_tv(&vhe->ad_tmo, &tv); |
1626 | break; |
1627 | } |
1628 | } |
1629 | |
1630 | void |
1631 | carp_multicast_cleanup(struct carp_softc *sc) |
1632 | { |
1633 | struct ip_moptions *imo = &sc->sc_imo; |
1634 | #ifdef INET61 |
1635 | struct ip6_moptions *im6o = &sc->sc_im6o; |
1636 | #endif |
1637 | u_int16_t n = imo->imo_num_memberships; |
1638 | |
1639 | /* Clean up our own multicast memberships */ |
1640 | while (n-- > 0) { |
1641 | if (imo->imo_membership[n] != NULL((void *)0)) { |
1642 | in_delmulti(imo->imo_membership[n]); |
1643 | imo->imo_membership[n] = NULL((void *)0); |
1644 | } |
1645 | } |
1646 | imo->imo_num_memberships = 0; |
1647 | imo->imo_ifidx = 0; |
1648 | |
1649 | #ifdef INET61 |
1650 | while (!LIST_EMPTY(&im6o->im6o_memberships)(((&im6o->im6o_memberships)->lh_first) == ((void *) 0))) { |
1651 | struct in6_multi_mship *imm = |
1652 | LIST_FIRST(&im6o->im6o_memberships)((&im6o->im6o_memberships)->lh_first); |
1653 | |
1654 | LIST_REMOVE(imm, i6mm_chain)do { if ((imm)->i6mm_chain.le_next != ((void *)0)) (imm)-> i6mm_chain.le_next->i6mm_chain.le_prev = (imm)->i6mm_chain .le_prev; *(imm)->i6mm_chain.le_prev = (imm)->i6mm_chain .le_next; ((imm)->i6mm_chain.le_prev) = ((void *)-1); ((imm )->i6mm_chain.le_next) = ((void *)-1); } while (0); |
1655 | in6_leavegroup(imm); |
1656 | } |
1657 | im6o->im6o_ifidx = 0; |
1658 | #endif |
1659 | |
1660 | /* And any other multicast memberships */ |
1661 | carp_ether_purgemulti(sc); |
1662 | } |
1663 | |
1664 | int |
1665 | carp_set_ifp(struct carp_softc *sc, struct ifnet *ifp0) |
1666 | { |
1667 | struct srpl *cif; |
1668 | struct carp_softc *vr, *last = NULL((void *)0), *after = NULL((void *)0); |
1669 | int myself = 0, error = 0; |
1670 | |
1671 | KASSERT(ifp0->if_index != sc->sc_carpdevidx)((ifp0->if_index != sc->sc_ac.ac_if.if_carp_ptr.carp_idx ) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1671, "ifp0->if_index != sc->sc_carpdevidx")); |
1672 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1672, "_kernel_lock_held()")); /* touching if_carp */ |
1673 | |
1674 | if ((ifp0->if_flags & IFF_MULTICAST0x8000) == 0) |
1675 | return (EADDRNOTAVAIL49); |
1676 | |
1677 | if (ifp0->if_typeif_data.ifi_type != IFT_ETHER0x06) |
1678 | return (EINVAL22); |
1679 | |
1680 | cif = &ifp0->if_carpif_carp_ptr.carp_s; |
1681 | if (carp_check_dup_vhids(sc, cif, NULL((void *)0))) |
1682 | return (EINVAL22); |
1683 | |
1684 | if ((error = ifpromisc(ifp0, 1))) |
1685 | return (error); |
1686 | |
1687 | /* detach from old interface */ |
1688 | if (sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx != 0) |
1689 | carpdetach(sc); |
1690 | |
1691 | /* attach carp interface to physical interface */ |
1692 | if_detachhook_add(ifp0, &sc->sc_dtask); |
1693 | if_linkstatehook_add(ifp0, &sc->sc_ltask); |
1694 | |
1695 | sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx = ifp0->if_index; |
1696 | sc->sc_ifsc_ac.ac_if.if_capabilitiesif_data.ifi_capabilities = ifp0->if_capabilitiesif_data.ifi_capabilities & |
1697 | (IFCAP_CSUM_MASK(0x00000001 | 0x00000002 | 0x00000004 | 0x00000080 | 0x00000100 ) | IFCAP_TSOv40x00001000 | IFCAP_TSOv60x00002000); |
1698 | |
1699 | SRPL_FOREACH_LOCKED(vr, cif, sc_list)for ((vr) = srp_get_locked(&(cif)->sl_head); (vr) != ( (void *)0); (vr) = srp_get_locked(&((vr))->sc_list.se_next )) { |
1700 | struct carp_vhost_entry *vrhead, *schead; |
1701 | last = vr; |
1702 | |
1703 | if (vr == sc) |
1704 | myself = 1; |
1705 | |
1706 | vrhead = SRPL_FIRST_LOCKED(&vr->carp_vhosts)srp_get_locked(&(&vr->carp_vhosts)->sl_head); |
1707 | schead = SRPL_FIRST_LOCKED(&sc->carp_vhosts)srp_get_locked(&(&sc->carp_vhosts)->sl_head); |
1708 | if (vrhead->vhid < schead->vhid) |
1709 | after = vr; |
1710 | } |
1711 | |
1712 | if (!myself) { |
1713 | /* We're trying to keep things in order */ |
1714 | if (last == NULL((void *)0)) { |
1715 | SRPL_INSERT_HEAD_LOCKED(&carp_sc_rc, cif,do { void *head; srp_init(&(sc)->sc_list.se_next); head = srp_get_locked(&(cif)->sl_head); if (head != ((void *)0)) { (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc )->srpl_gc.srp_gc_cookie, head); srp_update_locked(&(& carp_sc_rc)->srpl_gc, &(sc)->sc_list.se_next, head) ; } (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc)-> srpl_gc.srp_gc_cookie, sc); srp_update_locked(&(&carp_sc_rc )->srpl_gc, &(cif)->sl_head, (sc)); } while (0) |
1716 | sc, sc_list)do { void *head; srp_init(&(sc)->sc_list.se_next); head = srp_get_locked(&(cif)->sl_head); if (head != ((void *)0)) { (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc )->srpl_gc.srp_gc_cookie, head); srp_update_locked(&(& carp_sc_rc)->srpl_gc, &(sc)->sc_list.se_next, head) ; } (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc)-> srpl_gc.srp_gc_cookie, sc); srp_update_locked(&(&carp_sc_rc )->srpl_gc, &(cif)->sl_head, (sc)); } while (0); |
1717 | } else if (after == NULL((void *)0)) { |
1718 | SRPL_INSERT_AFTER_LOCKED(&carp_sc_rc, last,do { void *next; srp_init(&(sc)->sc_list.se_next); next = srp_get_locked(&(last)->sc_list.se_next); if (next != ((void *)0)) { (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc )->srpl_gc.srp_gc_cookie, next); srp_update_locked(&(& carp_sc_rc)->srpl_gc, &(sc)->sc_list.se_next, next) ; } (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc)-> srpl_gc.srp_gc_cookie, sc); srp_update_locked(&(&carp_sc_rc )->srpl_gc, &(last)->sc_list.se_next, (sc)); } while (0) |
1719 | sc, sc_list)do { void *next; srp_init(&(sc)->sc_list.se_next); next = srp_get_locked(&(last)->sc_list.se_next); if (next != ((void *)0)) { (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc )->srpl_gc.srp_gc_cookie, next); srp_update_locked(&(& carp_sc_rc)->srpl_gc, &(sc)->sc_list.se_next, next) ; } (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc)-> srpl_gc.srp_gc_cookie, sc); srp_update_locked(&(&carp_sc_rc )->srpl_gc, &(last)->sc_list.se_next, (sc)); } while (0); |
1720 | } else { |
1721 | SRPL_INSERT_AFTER_LOCKED(&carp_sc_rc, after,do { void *next; srp_init(&(sc)->sc_list.se_next); next = srp_get_locked(&(after)->sc_list.se_next); if (next != ((void *)0)) { (&carp_sc_rc)->srpl_ref(&(& carp_sc_rc)->srpl_gc.srp_gc_cookie, next); srp_update_locked (&(&carp_sc_rc)->srpl_gc, &(sc)->sc_list.se_next , next); } (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc )->srpl_gc.srp_gc_cookie, sc); srp_update_locked(&(& carp_sc_rc)->srpl_gc, &(after)->sc_list.se_next, (sc )); } while (0) |
1722 | sc, sc_list)do { void *next; srp_init(&(sc)->sc_list.se_next); next = srp_get_locked(&(after)->sc_list.se_next); if (next != ((void *)0)) { (&carp_sc_rc)->srpl_ref(&(& carp_sc_rc)->srpl_gc.srp_gc_cookie, next); srp_update_locked (&(&carp_sc_rc)->srpl_gc, &(sc)->sc_list.se_next , next); } (&carp_sc_rc)->srpl_ref(&(&carp_sc_rc )->srpl_gc.srp_gc_cookie, sc); srp_update_locked(&(& carp_sc_rc)->srpl_gc, &(after)->sc_list.se_next, (sc )); } while (0); |
1723 | } |
1724 | } |
1725 | if (sc->sc_naddrs || sc->sc_naddrs6) |
1726 | sc->sc_ifsc_ac.ac_if.if_flags |= IFF_UP0x1; |
1727 | carp_set_enaddr(sc); |
1728 | |
1729 | carp_carpdev_state(sc); |
1730 | |
1731 | return (0); |
1732 | } |
1733 | |
1734 | void |
1735 | carp_set_vhe_enaddr(struct carp_vhost_entry *vhe) |
1736 | { |
1737 | struct carp_softc *sc = vhe->parent_sc; |
1738 | |
1739 | if (vhe->vhid != 0 && sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx != 0) { |
1740 | if (vhe->vhe_leader && sc->sc_balancing == CARP_BAL_IP1) |
1741 | vhe->vhe_enaddr[0] = 1; |
1742 | else |
1743 | vhe->vhe_enaddr[0] = 0; |
1744 | vhe->vhe_enaddr[1] = 0; |
1745 | vhe->vhe_enaddr[2] = 0x5e; |
1746 | vhe->vhe_enaddr[3] = 0; |
1747 | vhe->vhe_enaddr[4] = 1; |
1748 | vhe->vhe_enaddr[5] = vhe->vhid; |
1749 | } else |
1750 | memset(vhe->vhe_enaddr, 0, ETHER_ADDR_LEN)__builtin_memset((vhe->vhe_enaddr), (0), (6)); |
1751 | } |
1752 | |
1753 | void |
1754 | carp_set_enaddr(struct carp_softc *sc) |
1755 | { |
1756 | struct carp_vhost_entry *vhe; |
1757 | |
1758 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1758, "_kernel_lock_held()")); /* touching carp_vhosts */ |
1759 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) |
1760 | carp_set_vhe_enaddr(vhe); |
1761 | |
1762 | vhe = SRPL_FIRST_LOCKED(&sc->carp_vhosts)srp_get_locked(&(&sc->carp_vhosts)->sl_head); |
1763 | |
1764 | /* |
1765 | * Use the carp lladdr if the running one isn't manually set. |
1766 | * Only compare static parts of the lladdr. |
1767 | */ |
1768 | if ((memcmp(sc->sc_ac.ac_enaddr + 1, vhe->vhe_enaddr + 1,__builtin_memcmp((sc->sc_ac.ac_enaddr + 1), (vhe->vhe_enaddr + 1), (6 - 2)) |
1769 | ETHER_ADDR_LEN - 2)__builtin_memcmp((sc->sc_ac.ac_enaddr + 1), (vhe->vhe_enaddr + 1), (6 - 2)) == 0) || |
1770 | (!sc->sc_ac.ac_enaddr[0] && !sc->sc_ac.ac_enaddr[1] && |
1771 | !sc->sc_ac.ac_enaddr[2] && !sc->sc_ac.ac_enaddr[3] && |
1772 | !sc->sc_ac.ac_enaddr[4] && !sc->sc_ac.ac_enaddr[5])) |
1773 | bcopy(vhe->vhe_enaddr, sc->sc_ac.ac_enaddr, ETHER_ADDR_LEN6); |
1774 | |
1775 | /* Make sure the enaddr has changed before further twiddling. */ |
1776 | if (memcmp(sc->sc_ac.ac_enaddr, sc->sc_curlladdr, ETHER_ADDR_LEN)__builtin_memcmp((sc->sc_ac.ac_enaddr), (sc->sc_curlladdr ), (6)) != 0) { |
1777 | bcopy(sc->sc_ac.ac_enaddr, LLADDR(sc->sc_if.if_sadl)((caddr_t)((sc->sc_ac.ac_if.if_sadl)->sdl_data + (sc-> sc_ac.ac_if.if_sadl)->sdl_nlen)), |
1778 | ETHER_ADDR_LEN6); |
1779 | bcopy(sc->sc_ac.ac_enaddr, sc->sc_curlladdr, ETHER_ADDR_LEN6); |
1780 | #ifdef INET61 |
1781 | /* |
1782 | * (re)attach a link-local address which matches |
1783 | * our new MAC address. |
1784 | */ |
1785 | if (sc->sc_naddrs6) |
1786 | in6_ifattach_linklocal(&sc->sc_ifsc_ac.ac_if, NULL((void *)0)); |
1787 | #endif |
1788 | carp_set_state_all(sc, INIT); |
1789 | carp_setrun_all(sc, 0); |
1790 | } |
1791 | } |
1792 | |
1793 | void |
1794 | carp_addr_updated(void *v) |
1795 | { |
1796 | struct carp_softc *sc = (struct carp_softc *) v; |
1797 | struct ifaddr *ifa; |
1798 | int new_naddrs = 0, new_naddrs6 = 0; |
1799 | |
1800 | TAILQ_FOREACH(ifa, &sc->sc_if.if_addrlist, ifa_list)for((ifa) = ((&sc->sc_ac.ac_if.if_addrlist)->tqh_first ); (ifa) != ((void *)0); (ifa) = ((ifa)->ifa_list.tqe_next )) { |
1801 | if (ifa->ifa_addr->sa_family == AF_INET2) |
1802 | new_naddrs++; |
1803 | #ifdef INET61 |
1804 | else if (ifa->ifa_addr->sa_family == AF_INET624) |
1805 | new_naddrs6++; |
1806 | #endif /* INET6 */ |
1807 | } |
1808 | |
1809 | /* We received address changes from if_addrhooks callback */ |
1810 | if (new_naddrs != sc->sc_naddrs || new_naddrs6 != sc->sc_naddrs6) { |
1811 | |
1812 | sc->sc_naddrs = new_naddrs; |
1813 | sc->sc_naddrs6 = new_naddrs6; |
1814 | |
1815 | /* Re-establish multicast membership removed by in_control */ |
1816 | if (IN_MULTICAST(sc->sc_peer.s_addr)(((u_int32_t)(sc->sc_peer.s_addr) & ((u_int32_t) (__uint32_t )(__builtin_constant_p((u_int32_t)(0xf0000000)) ? (__uint32_t )(((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xf0000000))))) == ((u_int32_t ) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000000)) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff ) << 24 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff00 ) << 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff0000 ) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff000000 ) >> 24) : __swap32md((u_int32_t)(0xe0000000)))))) { |
1817 | if (!in_hasmulti(&sc->sc_peer, &sc->sc_ifsc_ac.ac_if)) { |
1818 | struct in_multi **imm = |
1819 | sc->sc_imo.imo_membership; |
1820 | u_int16_t maxmem = |
1821 | sc->sc_imo.imo_max_memberships; |
1822 | |
1823 | memset(&sc->sc_imo, 0, sizeof(sc->sc_imo))__builtin_memset((&sc->sc_imo), (0), (sizeof(sc->sc_imo ))); |
1824 | sc->sc_imo.imo_membership = imm; |
1825 | sc->sc_imo.imo_max_memberships = maxmem; |
1826 | |
1827 | if (sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx != 0 && |
1828 | sc->sc_naddrs > 0) |
1829 | carp_join_multicast(sc); |
1830 | } |
1831 | } |
1832 | |
1833 | if (sc->sc_naddrs == 0 && sc->sc_naddrs6 == 0) { |
1834 | sc->sc_ifsc_ac.ac_if.if_flags &= ~IFF_UP0x1; |
1835 | carp_set_state_all(sc, INIT); |
1836 | } else |
1837 | carp_hmac_prepare(sc); |
1838 | } |
1839 | |
1840 | carp_setrun_all(sc, 0); |
1841 | } |
1842 | |
1843 | int |
1844 | carp_set_addr(struct carp_softc *sc, struct sockaddr_in *sin) |
1845 | { |
1846 | struct in_addr *in = &sin->sin_addr; |
1847 | int error; |
1848 | |
1849 | KASSERT(sc->sc_carpdevidx != 0)((sc->sc_ac.ac_if.if_carp_ptr.carp_idx != 0) ? (void)0 : __assert ("diagnostic ", "/usr/src/sys/netinet/ip_carp.c", 1849, "sc->sc_carpdevidx != 0" )); |
1850 | |
1851 | /* XXX is this necessary? */ |
1852 | if (in->s_addr == INADDR_ANY((u_int32_t) (__uint32_t)(__builtin_constant_p((u_int32_t)(0x00000000 )) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0x00000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0x00000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0x00000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0x00000000) ) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0x00000000 ))))) { |
1853 | carp_setrun_all(sc, 0); |
1854 | return (0); |
1855 | } |
1856 | |
1857 | if (sc->sc_naddrs == 0 && (error = carp_join_multicast(sc)) != 0) |
1858 | return (error); |
1859 | |
1860 | carp_set_state_all(sc, INIT); |
1861 | |
1862 | return (0); |
1863 | } |
1864 | |
1865 | int |
1866 | carp_join_multicast(struct carp_softc *sc) |
1867 | { |
1868 | struct ip_moptions *imo = &sc->sc_imo; |
1869 | struct in_multi *imm; |
1870 | struct in_addr addr; |
1871 | |
1872 | if (!IN_MULTICAST(sc->sc_peer.s_addr)(((u_int32_t)(sc->sc_peer.s_addr) & ((u_int32_t) (__uint32_t )(__builtin_constant_p((u_int32_t)(0xf0000000)) ? (__uint32_t )(((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xf0000000)) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xf0000000))))) == ((u_int32_t ) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000000)) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff ) << 24 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff00 ) << 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff0000 ) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000000)) & 0xff000000 ) >> 24) : __swap32md((u_int32_t)(0xe0000000)))))) |
1873 | return (0); |
1874 | |
1875 | addr.s_addr = sc->sc_peer.s_addr; |
1876 | if ((imm = in_addmulti(&addr, &sc->sc_ifsc_ac.ac_if)) == NULL((void *)0)) |
1877 | return (ENOBUFS55); |
1878 | |
1879 | imo->imo_membership[0] = imm; |
1880 | imo->imo_num_memberships = 1; |
1881 | imo->imo_ifidx = sc->sc_ifsc_ac.ac_if.if_index; |
1882 | imo->imo_ttl = CARP_DFLTTL255; |
1883 | imo->imo_loop = 0; |
1884 | return (0); |
1885 | } |
1886 | |
1887 | |
1888 | #ifdef INET61 |
1889 | int |
1890 | carp_set_addr6(struct carp_softc *sc, struct sockaddr_in6 *sin6) |
1891 | { |
1892 | int error; |
1893 | |
1894 | KASSERT(sc->sc_carpdevidx != 0)((sc->sc_ac.ac_if.if_carp_ptr.carp_idx != 0) ? (void)0 : __assert ("diagnostic ", "/usr/src/sys/netinet/ip_carp.c", 1894, "sc->sc_carpdevidx != 0" )); |
1895 | |
1896 | if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)((*(const u_int32_t *)(const void *)(&(&sin6->sin6_addr )->__u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t *)(const void *)(&(&sin6->sin6_addr)->__u6_addr .__u6_addr8[4]) == 0) && (*(const u_int32_t *)(const void *)(&(&sin6->sin6_addr)->__u6_addr.__u6_addr8[8 ]) == 0) && (*(const u_int32_t *)(const void *)(& (&sin6->sin6_addr)->__u6_addr.__u6_addr8[12]) == 0) )) { |
1897 | carp_setrun_all(sc, 0); |
1898 | return (0); |
1899 | } |
1900 | |
1901 | if (sc->sc_naddrs6 == 0 && (error = carp_join_multicast6(sc)) != 0) |
1902 | return (error); |
1903 | |
1904 | carp_set_state_all(sc, INIT); |
1905 | |
1906 | return (0); |
1907 | } |
1908 | |
1909 | int |
1910 | carp_join_multicast6(struct carp_softc *sc) |
1911 | { |
1912 | struct in6_multi_mship *imm, *imm2; |
1913 | struct ip6_moptions *im6o = &sc->sc_im6o; |
1914 | struct sockaddr_in6 addr6; |
1915 | int error; |
1916 | |
1917 | /* Join IPv6 CARP multicast group */ |
1918 | memset(&addr6, 0, sizeof(addr6))__builtin_memset((&addr6), (0), (sizeof(addr6))); |
1919 | addr6.sin6_family = AF_INET624; |
1920 | addr6.sin6_len = sizeof(addr6); |
1921 | addr6.sin6_addr.s6_addr16__u6_addr.__u6_addr16[0] = htons(0xff02)(__uint16_t)(__builtin_constant_p(0xff02) ? (__uint16_t)(((__uint16_t )(0xff02) & 0xffU) << 8 | ((__uint16_t)(0xff02) & 0xff00U) >> 8) : __swap16md(0xff02)); |
1922 | addr6.sin6_addr.s6_addr16__u6_addr.__u6_addr16[1] = htons(sc->sc_if.if_index)(__uint16_t)(__builtin_constant_p(sc->sc_ac.ac_if.if_index ) ? (__uint16_t)(((__uint16_t)(sc->sc_ac.ac_if.if_index) & 0xffU) << 8 | ((__uint16_t)(sc->sc_ac.ac_if.if_index ) & 0xff00U) >> 8) : __swap16md(sc->sc_ac.ac_if. if_index)); |
1923 | addr6.sin6_addr.s6_addr8__u6_addr.__u6_addr8[15] = 0x12; |
1924 | if ((imm = in6_joingroup(&sc->sc_ifsc_ac.ac_if, |
1925 | &addr6.sin6_addr, &error)) == NULL((void *)0)) { |
1926 | return (error); |
1927 | } |
1928 | /* join solicited multicast address */ |
1929 | memset(&addr6.sin6_addr, 0, sizeof(addr6.sin6_addr))__builtin_memset((&addr6.sin6_addr), (0), (sizeof(addr6.sin6_addr ))); |
1930 | addr6.sin6_addr.s6_addr16__u6_addr.__u6_addr16[0] = htons(0xff02)(__uint16_t)(__builtin_constant_p(0xff02) ? (__uint16_t)(((__uint16_t )(0xff02) & 0xffU) << 8 | ((__uint16_t)(0xff02) & 0xff00U) >> 8) : __swap16md(0xff02)); |
1931 | addr6.sin6_addr.s6_addr16__u6_addr.__u6_addr16[1] = htons(sc->sc_if.if_index)(__uint16_t)(__builtin_constant_p(sc->sc_ac.ac_if.if_index ) ? (__uint16_t)(((__uint16_t)(sc->sc_ac.ac_if.if_index) & 0xffU) << 8 | ((__uint16_t)(sc->sc_ac.ac_if.if_index ) & 0xff00U) >> 8) : __swap16md(sc->sc_ac.ac_if. if_index)); |
1932 | addr6.sin6_addr.s6_addr32__u6_addr.__u6_addr32[1] = 0; |
1933 | addr6.sin6_addr.s6_addr32__u6_addr.__u6_addr32[2] = htonl(1)(__uint32_t)(__builtin_constant_p(1) ? (__uint32_t)(((__uint32_t )(1) & 0xff) << 24 | ((__uint32_t)(1) & 0xff00) << 8 | ((__uint32_t)(1) & 0xff0000) >> 8 | ( (__uint32_t)(1) & 0xff000000) >> 24) : __swap32md(1 )); |
1934 | addr6.sin6_addr.s6_addr32__u6_addr.__u6_addr32[3] = 0; |
1935 | addr6.sin6_addr.s6_addr8__u6_addr.__u6_addr8[12] = 0xff; |
1936 | if ((imm2 = in6_joingroup(&sc->sc_ifsc_ac.ac_if, |
1937 | &addr6.sin6_addr, &error)) == NULL((void *)0)) { |
1938 | in6_leavegroup(imm); |
1939 | return (error); |
1940 | } |
1941 | |
1942 | /* apply v6 multicast membership */ |
1943 | im6o->im6o_ifidx = sc->sc_ifsc_ac.ac_if.if_index; |
1944 | if (imm) |
1945 | LIST_INSERT_HEAD(&im6o->im6o_memberships, imm,do { if (((imm)->i6mm_chain.le_next = (&im6o->im6o_memberships )->lh_first) != ((void *)0)) (&im6o->im6o_memberships )->lh_first->i6mm_chain.le_prev = &(imm)->i6mm_chain .le_next; (&im6o->im6o_memberships)->lh_first = (imm ); (imm)->i6mm_chain.le_prev = &(&im6o->im6o_memberships )->lh_first; } while (0) |
1946 | i6mm_chain)do { if (((imm)->i6mm_chain.le_next = (&im6o->im6o_memberships )->lh_first) != ((void *)0)) (&im6o->im6o_memberships )->lh_first->i6mm_chain.le_prev = &(imm)->i6mm_chain .le_next; (&im6o->im6o_memberships)->lh_first = (imm ); (imm)->i6mm_chain.le_prev = &(&im6o->im6o_memberships )->lh_first; } while (0); |
1947 | if (imm2) |
1948 | LIST_INSERT_HEAD(&im6o->im6o_memberships, imm2,do { if (((imm2)->i6mm_chain.le_next = (&im6o->im6o_memberships )->lh_first) != ((void *)0)) (&im6o->im6o_memberships )->lh_first->i6mm_chain.le_prev = &(imm2)->i6mm_chain .le_next; (&im6o->im6o_memberships)->lh_first = (imm2 ); (imm2)->i6mm_chain.le_prev = &(&im6o->im6o_memberships )->lh_first; } while (0) |
1949 | i6mm_chain)do { if (((imm2)->i6mm_chain.le_next = (&im6o->im6o_memberships )->lh_first) != ((void *)0)) (&im6o->im6o_memberships )->lh_first->i6mm_chain.le_prev = &(imm2)->i6mm_chain .le_next; (&im6o->im6o_memberships)->lh_first = (imm2 ); (imm2)->i6mm_chain.le_prev = &(&im6o->im6o_memberships )->lh_first; } while (0); |
1950 | |
1951 | return (0); |
1952 | } |
1953 | |
1954 | #endif /* INET6 */ |
1955 | |
1956 | int |
1957 | carp_ioctl(struct ifnet *ifp, u_long cmd, caddr_t addr) |
1958 | { |
1959 | struct proc *p = curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc; /* XXX */ |
1960 | struct carp_softc *sc = ifp->if_softc; |
1961 | struct carp_vhost_entry *vhe; |
1962 | struct carpreq carpr; |
1963 | struct ifaddr *ifa = (struct ifaddr *)addr; |
1964 | struct ifreq *ifr = (struct ifreq *)addr; |
1965 | struct ifnet *ifp0 = NULL((void *)0); |
1966 | int i, error = 0; |
1967 | |
1968 | switch (cmd) { |
1969 | case SIOCSIFADDR((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((12))): |
1970 | if (sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx == 0) |
1971 | return (EINVAL22); |
1972 | |
1973 | switch (ifa->ifa_addr->sa_family) { |
1974 | case AF_INET2: |
1975 | sc->sc_ifsc_ac.ac_if.if_flags |= IFF_UP0x1; |
1976 | error = carp_set_addr(sc, satosin(ifa->ifa_addr)); |
1977 | break; |
1978 | #ifdef INET61 |
1979 | case AF_INET624: |
1980 | sc->sc_ifsc_ac.ac_if.if_flags |= IFF_UP0x1; |
1981 | error = carp_set_addr6(sc, satosin6(ifa->ifa_addr)); |
1982 | break; |
1983 | #endif /* INET6 */ |
1984 | default: |
1985 | error = EAFNOSUPPORT47; |
1986 | break; |
1987 | } |
1988 | break; |
1989 | |
1990 | case SIOCSIFFLAGS((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((16))): |
1991 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 1991, "_kernel_lock_held()")); /* touching carp_vhosts */ |
1992 | vhe = SRPL_FIRST_LOCKED(&sc->carp_vhosts)srp_get_locked(&(&sc->carp_vhosts)->sl_head); |
1993 | if (vhe->state != INIT && !(ifr->ifr_flagsifr_ifru.ifru_flags & IFF_UP0x1)) { |
1994 | carp_del_all_timeouts(sc); |
1995 | |
1996 | /* we need the interface up to bow out */ |
1997 | sc->sc_ifsc_ac.ac_if.if_flags |= IFF_UP0x1; |
1998 | sc->sc_bow_out = 1; |
1999 | carp_vhe_send_ad_all(sc); |
2000 | sc->sc_bow_out = 0; |
2001 | |
2002 | sc->sc_ifsc_ac.ac_if.if_flags &= ~IFF_UP0x1; |
2003 | carp_set_state_all(sc, INIT); |
2004 | carp_setrun_all(sc, 0); |
2005 | } else if (vhe->state == INIT && (ifr->ifr_flagsifr_ifru.ifru_flags & IFF_UP0x1)) { |
2006 | sc->sc_ifsc_ac.ac_if.if_flags |= IFF_UP0x1; |
2007 | carp_setrun_all(sc, 0); |
2008 | } |
2009 | break; |
2010 | |
2011 | case SIOCSVH(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifreq) & 0x1fff) << 16) | ((('i')) << 8) | ((245))): |
2012 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2012, "_kernel_lock_held()")); /* touching carp_vhosts */ |
2013 | vhe = SRPL_FIRST_LOCKED(&sc->carp_vhosts)srp_get_locked(&(&sc->carp_vhosts)->sl_head); |
2014 | if ((error = suser(p)) != 0) |
2015 | break; |
2016 | if ((error = copyin(ifr->ifr_dataifr_ifru.ifru_data, &carpr, sizeof carpr))) |
2017 | break; |
2018 | error = 1; |
2019 | if (carpr.carpr_carpdev[0] != '\0' && |
2020 | (ifp0 = if_unit(carpr.carpr_carpdev)) == NULL((void *)0)) |
2021 | return (EINVAL22); |
2022 | if (carpr.carpr_peer.s_addr == 0) |
2023 | sc->sc_peer.s_addr = INADDR_CARP_GROUP((u_int32_t) (__uint32_t)(__builtin_constant_p((u_int32_t)(0xe0000012 )) ? (__uint32_t)(((__uint32_t)((u_int32_t)(0xe0000012)) & 0xff) << 24 | ((__uint32_t)((u_int32_t)(0xe0000012)) & 0xff00) << 8 | ((__uint32_t)((u_int32_t)(0xe0000012)) & 0xff0000) >> 8 | ((__uint32_t)((u_int32_t)(0xe0000012) ) & 0xff000000) >> 24) : __swap32md((u_int32_t)(0xe0000012 )))); |
2024 | else |
2025 | sc->sc_peer.s_addr = carpr.carpr_peer.s_addr; |
2026 | if (ifp0 != NULL((void *)0) && ifp0->if_index != sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx) { |
2027 | if ((error = carp_set_ifp(sc, ifp0))) { |
2028 | if_put(ifp0); |
2029 | return (error); |
2030 | } |
2031 | } |
2032 | if_put(ifp0); |
2033 | if (vhe->state != INIT && carpr.carpr_state != vhe->state) { |
2034 | switch (carpr.carpr_state) { |
2035 | case BACKUP: |
2036 | timeout_del(&vhe->ad_tmo); |
2037 | carp_set_state_all(sc, BACKUP); |
2038 | carp_setrun_all(sc, 0); |
2039 | break; |
2040 | case MASTER: |
2041 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2041, "_kernel_lock_held()")); |
2042 | /* touching carp_vhosts */ |
2043 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts,for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) |
2044 | vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) |
2045 | carp_master_down(vhe); |
2046 | break; |
2047 | default: |
2048 | break; |
2049 | } |
2050 | } |
2051 | if ((error = carp_vhids_ioctl(sc, &carpr))) |
2052 | return (error); |
2053 | if (carpr.carpr_advbase >= 0) { |
2054 | if (carpr.carpr_advbase > 255) { |
2055 | error = EINVAL22; |
2056 | break; |
2057 | } |
2058 | sc->sc_advbase = carpr.carpr_advbase; |
2059 | error--; |
2060 | } |
2061 | if (memcmp(sc->sc_advskews, carpr.carpr_advskews,__builtin_memcmp((sc->sc_advskews), (carpr.carpr_advskews) , (sizeof(sc->sc_advskews))) |
2062 | sizeof(sc->sc_advskews))__builtin_memcmp((sc->sc_advskews), (carpr.carpr_advskews) , (sizeof(sc->sc_advskews)))) { |
2063 | i = 0; |
2064 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2064, "_kernel_lock_held()")); /* touching carp_vhosts */ |
2065 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts,for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) |
2066 | vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) |
2067 | vhe->advskew = carpr.carpr_advskews[i++]; |
2068 | bcopy(carpr.carpr_advskews, sc->sc_advskews, |
2069 | sizeof(sc->sc_advskews)); |
2070 | } |
2071 | if (sc->sc_balancing != carpr.carpr_balancing) { |
2072 | if (carpr.carpr_balancing > CARP_BAL_MAXID3) { |
2073 | error = EINVAL22; |
2074 | break; |
2075 | } |
2076 | sc->sc_balancing = carpr.carpr_balancing; |
2077 | carp_set_enaddr(sc); |
2078 | carp_update_lsmask(sc); |
2079 | } |
2080 | bcopy(carpr.carpr_key, sc->sc_key, sizeof(sc->sc_key)); |
2081 | if (error > 0) |
2082 | error = EINVAL22; |
2083 | else { |
2084 | error = 0; |
2085 | carp_hmac_prepare(sc); |
2086 | carp_setrun_all(sc, 0); |
2087 | } |
2088 | break; |
2089 | |
2090 | case SIOCGVH(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifreq) & 0x1fff) << 16) | ((('i')) << 8) | ((246))): |
2091 | memset(&carpr, 0, sizeof(carpr))__builtin_memset((&carpr), (0), (sizeof(carpr))); |
2092 | if ((ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) != NULL((void *)0)) |
2093 | strlcpy(carpr.carpr_carpdev, ifp0->if_xname, IFNAMSIZ16); |
2094 | if_put(ifp0); |
2095 | i = 0; |
2096 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2096, "_kernel_lock_held()")); /* touching carp_vhosts */ |
2097 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
2098 | carpr.carpr_vhids[i] = vhe->vhid; |
2099 | carpr.carpr_advskews[i] = vhe->advskew; |
2100 | carpr.carpr_states[i] = vhe->state; |
2101 | i++; |
2102 | } |
2103 | carpr.carpr_advbase = sc->sc_advbase; |
2104 | carpr.carpr_balancing = sc->sc_balancing; |
2105 | if (suser(p) == 0) |
2106 | bcopy(sc->sc_key, carpr.carpr_key, |
2107 | sizeof(carpr.carpr_key)); |
2108 | carpr.carpr_peer.s_addr = sc->sc_peer.s_addr; |
2109 | error = copyout(&carpr, ifr->ifr_dataifr_ifru.ifru_data, sizeof(carpr)); |
2110 | break; |
2111 | |
2112 | case SIOCADDMULTI((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((49))): |
2113 | error = carp_ether_addmulti(sc, ifr); |
2114 | break; |
2115 | |
2116 | case SIOCDELMULTI((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((50))): |
2117 | error = carp_ether_delmulti(sc, ifr); |
2118 | break; |
2119 | case SIOCAIFGROUP((unsigned long)0x80000000 | ((sizeof(struct ifgroupreq) & 0x1fff) << 16) | ((('i')) << 8) | ((135))): |
2120 | case SIOCDIFGROUP((unsigned long)0x80000000 | ((sizeof(struct ifgroupreq) & 0x1fff) << 16) | ((('i')) << 8) | ((137))): |
2121 | if (sc->sc_demote_cnt) |
2122 | carp_ifgroup_ioctl(ifp, cmd, addr); |
2123 | break; |
2124 | case SIOCSIFGATTR((unsigned long)0x80000000 | ((sizeof(struct ifgroupreq) & 0x1fff) << 16) | ((('i')) << 8) | ((140))): |
2125 | carp_ifgattr_ioctl(ifp, cmd, addr); |
2126 | break; |
2127 | default: |
2128 | error = ENOTTY25; |
2129 | } |
2130 | |
2131 | if (memcmp(sc->sc_ac.ac_enaddr, sc->sc_curlladdr, ETHER_ADDR_LEN)__builtin_memcmp((sc->sc_ac.ac_enaddr), (sc->sc_curlladdr ), (6)) != 0) |
2132 | carp_set_enaddr(sc); |
2133 | return (error); |
2134 | } |
2135 | |
2136 | int |
2137 | carp_check_dup_vhids(struct carp_softc *sc, struct srpl *cif, |
2138 | struct carpreq *carpr) |
2139 | { |
2140 | struct carp_softc *vr; |
2141 | struct carp_vhost_entry *vhe, *vhe0; |
2142 | int i; |
2143 | |
2144 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2144, "_kernel_lock_held()")); /* touching if_carp + carp_vhosts */ |
2145 | |
2146 | SRPL_FOREACH_LOCKED(vr, cif, sc_list)for ((vr) = srp_get_locked(&(cif)->sl_head); (vr) != ( (void *)0); (vr) = srp_get_locked(&((vr))->sc_list.se_next )) { |
2147 | if (vr == sc) |
2148 | continue; |
2149 | SRPL_FOREACH_LOCKED(vhe, &vr->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&vr->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
2150 | if (carpr) { |
2151 | for (i = 0; carpr->carpr_vhids[i]; i++) { |
2152 | if (vhe->vhid == carpr->carpr_vhids[i]) |
2153 | return (EINVAL22); |
2154 | } |
2155 | } |
2156 | SRPL_FOREACH_LOCKED(vhe0, &sc->carp_vhosts,for ((vhe0) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe0) != ((void *)0); (vhe0) = srp_get_locked(& ((vhe0))->vhost_entries.se_next)) |
2157 | vhost_entries)for ((vhe0) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe0) != ((void *)0); (vhe0) = srp_get_locked(& ((vhe0))->vhost_entries.se_next)) { |
2158 | if (vhe->vhid == vhe0->vhid) |
2159 | return (EINVAL22); |
2160 | } |
2161 | } |
2162 | } |
2163 | return (0); |
2164 | } |
2165 | |
2166 | int |
2167 | carp_vhids_ioctl(struct carp_softc *sc, struct carpreq *carpr) |
2168 | { |
2169 | int i, j; |
2170 | u_int8_t taken_vhids[256]; |
2171 | |
2172 | if (carpr->carpr_vhids[0] == 0 || |
2173 | !memcmp(sc->sc_vhids, carpr->carpr_vhids, sizeof(sc->sc_vhids))__builtin_memcmp((sc->sc_vhids), (carpr->carpr_vhids), ( sizeof(sc->sc_vhids)))) |
2174 | return (0); |
2175 | |
2176 | memset(taken_vhids, 0, sizeof(taken_vhids))__builtin_memset((taken_vhids), (0), (sizeof(taken_vhids))); |
2177 | for (i = 0; carpr->carpr_vhids[i]; i++) { |
2178 | struct ifnet *ifp; |
2179 | |
2180 | if (taken_vhids[carpr->carpr_vhids[i]]) |
2181 | return (EINVAL22); |
2182 | taken_vhids[carpr->carpr_vhids[i]] = 1; |
2183 | |
2184 | if ((ifp = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) != NULL((void *)0)) { |
2185 | struct srpl *cif; |
2186 | cif = &ifp->if_carpif_carp_ptr.carp_s; |
2187 | if (carp_check_dup_vhids(sc, cif, carpr)) { |
2188 | if_put(ifp); |
2189 | return (EINVAL22); |
2190 | } |
2191 | } |
2192 | if_put(ifp); |
2193 | if (carpr->carpr_advskews[i] >= 255) |
2194 | return (EINVAL22); |
2195 | } |
2196 | /* set sane balancing defaults */ |
2197 | if (i <= 1) |
2198 | carpr->carpr_balancing = CARP_BAL_NONE0; |
2199 | else if (carpr->carpr_balancing == CARP_BAL_NONE0 && |
2200 | sc->sc_balancing == CARP_BAL_NONE0) |
2201 | carpr->carpr_balancing = CARP_BAL_IP1; |
2202 | |
2203 | /* destroy all */ |
2204 | carp_del_all_timeouts(sc); |
2205 | carp_destroy_vhosts(sc); |
2206 | memset(sc->sc_vhids, 0, sizeof(sc->sc_vhids))__builtin_memset((sc->sc_vhids), (0), (sizeof(sc->sc_vhids ))); |
2207 | |
2208 | /* sort vhosts list by vhid */ |
2209 | for (j = 1; j <= 255; j++) { |
2210 | for (i = 0; carpr->carpr_vhids[i]; i++) { |
2211 | if (carpr->carpr_vhids[i] != j) |
2212 | continue; |
2213 | if (carp_new_vhost(sc, carpr->carpr_vhids[i], |
2214 | carpr->carpr_advskews[i])) |
2215 | return (ENOMEM12); |
2216 | sc->sc_vhids[i] = carpr->carpr_vhids[i]; |
2217 | sc->sc_advskews[i] = carpr->carpr_advskews[i]; |
2218 | } |
2219 | } |
2220 | carp_set_enaddr(sc); |
2221 | carp_set_state_all(sc, INIT); |
2222 | return (0); |
2223 | } |
2224 | |
2225 | void |
2226 | carp_ifgroup_ioctl(struct ifnet *ifp, u_long cmd, caddr_t addr) |
2227 | { |
2228 | struct ifgroupreq *ifgr = (struct ifgroupreq *)addr; |
2229 | struct ifg_list *ifgl; |
2230 | int *dm, adj; |
2231 | |
2232 | if (!strcmp(ifgr->ifgr_groupifgr_ifgru.ifgru_group, IFG_ALL"all")) |
2233 | return; |
2234 | adj = ((struct carp_softc *)ifp->if_softc)->sc_demote_cnt; |
2235 | if (cmd == SIOCDIFGROUP((unsigned long)0x80000000 | ((sizeof(struct ifgroupreq) & 0x1fff) << 16) | ((('i')) << 8) | ((137)))) |
2236 | adj = adj * -1; |
2237 | |
2238 | TAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next)for((ifgl) = ((&ifp->if_groups)->tqh_first); (ifgl) != ((void *)0); (ifgl) = ((ifgl)->ifgl_next.tqe_next)) |
2239 | if (!strcmp(ifgl->ifgl_group->ifg_group, ifgr->ifgr_groupifgr_ifgru.ifgru_group)) { |
2240 | dm = &ifgl->ifgl_group->ifg_carp_demoted; |
2241 | if (*dm + adj >= 0) |
2242 | *dm += adj; |
2243 | else |
2244 | *dm = 0; |
2245 | } |
2246 | } |
2247 | |
2248 | void |
2249 | carp_ifgattr_ioctl(struct ifnet *ifp, u_long cmd, caddr_t addr) |
2250 | { |
2251 | struct ifgroupreq *ifgr = (struct ifgroupreq *)addr; |
2252 | struct carp_softc *sc = ifp->if_softc; |
2253 | |
2254 | if (ifgr->ifgr_attribifgr_ifgru.ifgru_attrib.ifg_carp_demoted > 0 && (sc->sc_ifsc_ac.ac_if.if_flags & |
2255 | (IFF_UP0x1|IFF_RUNNING0x40)) == (IFF_UP0x1|IFF_RUNNING0x40)) |
2256 | carp_vhe_send_ad_all(sc); |
2257 | } |
2258 | |
2259 | void |
2260 | carp_start(struct ifnet *ifp) |
2261 | { |
2262 | struct carp_softc *sc = ifp->if_softc; |
2263 | struct ifnet *ifp0; |
2264 | struct mbuf *m; |
2265 | |
2266 | if ((ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) == NULL((void *)0)) { |
2267 | ifq_purge(&ifp->if_snd); |
2268 | return; |
2269 | } |
2270 | |
2271 | while ((m = ifq_dequeue(&ifp->if_snd)) != NULL((void *)0)) |
2272 | carp_transmit(sc, ifp0, m); |
2273 | if_put(ifp0); |
2274 | } |
2275 | |
2276 | void |
2277 | carp_transmit(struct carp_softc *sc, struct ifnet *ifp0, struct mbuf *m) |
2278 | { |
2279 | struct ifnet *ifp = &sc->sc_ifsc_ac.ac_if; |
2280 | |
2281 | #if NBPFILTER1 > 0 |
2282 | { |
2283 | caddr_t if_bpf = ifp->if_bpf; |
2284 | if (if_bpf) |
2285 | bpf_mtap_ether(if_bpf, m, BPF_DIRECTION_OUT(1 << 1)); |
2286 | } |
2287 | #endif /* NBPFILTER > 0 */ |
2288 | |
2289 | if (!ISSET(ifp0->if_flags, IFF_RUNNING)((ifp0->if_flags) & (0x40))) { |
2290 | counters_inc(ifp->if_counters, ifc_oerrors); |
2291 | m_freem(m); |
2292 | return; |
2293 | } |
2294 | |
2295 | /* |
2296 | * Do not leak the multicast address when sending |
2297 | * advertisements in 'ip' and 'ip-stealth' balancing |
2298 | * modes. |
2299 | */ |
2300 | if (sc->sc_balancing == CARP_BAL_IP1 || |
2301 | sc->sc_balancing == CARP_BAL_IPSTEALTH2) { |
2302 | struct ether_header *eh = mtod(m, struct ether_header *)((struct ether_header *)((m)->m_hdr.mh_data)); |
2303 | memcpy(eh->ether_shost, sc->sc_ac.ac_enaddr,__builtin_memcpy((eh->ether_shost), (sc->sc_ac.ac_enaddr ), (sizeof(eh->ether_shost))) |
2304 | sizeof(eh->ether_shost))__builtin_memcpy((eh->ether_shost), (sc->sc_ac.ac_enaddr ), (sizeof(eh->ether_shost))); |
2305 | } |
2306 | |
2307 | if (if_enqueue(ifp0, m)) |
2308 | counters_inc(ifp->if_counters, ifc_oerrors); |
2309 | } |
2310 | |
2311 | int |
2312 | carp_enqueue(struct ifnet *ifp, struct mbuf *m) |
2313 | { |
2314 | struct carp_softc *sc = ifp->if_softc; |
2315 | struct ifnet *ifp0; |
2316 | |
2317 | /* no ifq_is_priq, cos hfsc on carp doesn't make sense */ |
2318 | |
2319 | /* |
2320 | * If the parent of this carp(4) got destroyed while |
2321 | * `m' was being processed, silently drop it. |
2322 | */ |
2323 | if ((ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) == NULL((void *)0)) { |
2324 | m_freem(m); |
2325 | return (0); |
2326 | } |
2327 | |
2328 | counters_pkt(ifp->if_counters, |
2329 | ifc_opackets, ifc_obytes, m->m_pkthdrM_dat.MH.MH_pkthdr.len); |
2330 | carp_transmit(sc, ifp0, m); |
2331 | if_put(ifp0); |
2332 | |
2333 | return (0); |
2334 | } |
2335 | |
2336 | int |
2337 | carp_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *sa, |
2338 | struct rtentry *rt) |
2339 | { |
2340 | struct carp_softc *sc = ((struct carp_softc *)ifp->if_softc); |
2341 | struct carp_vhost_entry *vhe; |
2342 | struct srp_ref sr; |
2343 | int ismaster; |
2344 | |
2345 | if (sc->cur_vhe == NULL((void *)0)) { |
2346 | vhe = SRPL_FIRST(&sr, &sc->carp_vhosts)srp_enter((&sr), &(&sc->carp_vhosts)->sl_head ); |
2347 | ismaster = (vhe->state == MASTER); |
2348 | SRPL_LEAVE(&sr)srp_leave((&sr)); |
2349 | } else { |
2350 | ismaster = (sc->cur_vhe->state == MASTER); |
2351 | } |
2352 | |
2353 | if ((sc->sc_balancing == CARP_BAL_NONE0 && !ismaster)) { |
2354 | m_freem(m); |
2355 | return (ENETUNREACH51); |
2356 | } |
2357 | |
2358 | return (ether_output(ifp, m, sa, rt)); |
2359 | } |
2360 | |
2361 | void |
2362 | carp_set_state_all(struct carp_softc *sc, int state) |
2363 | { |
2364 | struct carp_vhost_entry *vhe; |
2365 | |
2366 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2366, "_kernel_lock_held()")); /* touching carp_vhosts */ |
2367 | |
2368 | SRPL_FOREACH_LOCKED(vhe, &sc->carp_vhosts, vhost_entries)for ((vhe) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe) != ((void *)0); (vhe) = srp_get_locked(&( (vhe))->vhost_entries.se_next)) { |
2369 | if (vhe->state == state) |
2370 | continue; |
2371 | |
2372 | carp_set_state(vhe, state); |
2373 | } |
2374 | } |
2375 | |
2376 | void |
2377 | carp_set_state(struct carp_vhost_entry *vhe, int state) |
2378 | { |
2379 | struct carp_softc *sc = vhe->parent_sc; |
2380 | static const char *carp_states[] = { CARP_STATES"INIT", "BACKUP", "MASTER" }; |
2381 | int loglevel; |
2382 | struct carp_vhost_entry *vhe0; |
2383 | |
2384 | KASSERT(vhe->state != state)((vhe->state != state) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c", 2384, "vhe->state != state" )); |
2385 | |
2386 | if (vhe->state == INIT || state == INIT) |
2387 | loglevel = LOG_WARNING4; |
2388 | else |
2389 | loglevel = LOG_CRIT2; |
2390 | |
2391 | if (sc->sc_vhe_count > 1) |
2392 | CARP_LOG(loglevel, sc,do { if (carp_opts[3] >= loglevel) { if (sc) log(loglevel, "%s: ", (sc)->sc_ac.ac_if.if_xname); else log(loglevel, "carp: " ); addlog ("state transition (vhid %d): %s -> %s", vhe-> vhid, carp_states[vhe->state], carp_states[state]); addlog ("\n"); } } while (0) |
2393 | ("state transition (vhid %d): %s -> %s", vhe->vhid,do { if (carp_opts[3] >= loglevel) { if (sc) log(loglevel, "%s: ", (sc)->sc_ac.ac_if.if_xname); else log(loglevel, "carp: " ); addlog ("state transition (vhid %d): %s -> %s", vhe-> vhid, carp_states[vhe->state], carp_states[state]); addlog ("\n"); } } while (0) |
2394 | carp_states[vhe->state], carp_states[state]))do { if (carp_opts[3] >= loglevel) { if (sc) log(loglevel, "%s: ", (sc)->sc_ac.ac_if.if_xname); else log(loglevel, "carp: " ); addlog ("state transition (vhid %d): %s -> %s", vhe-> vhid, carp_states[vhe->state], carp_states[state]); addlog ("\n"); } } while (0); |
2395 | else |
2396 | CARP_LOG(loglevel, sc,do { if (carp_opts[3] >= loglevel) { if (sc) log(loglevel, "%s: ", (sc)->sc_ac.ac_if.if_xname); else log(loglevel, "carp: " ); addlog ("state transition: %s -> %s", carp_states[vhe-> state], carp_states[state]); addlog("\n"); } } while (0) |
2397 | ("state transition: %s -> %s",do { if (carp_opts[3] >= loglevel) { if (sc) log(loglevel, "%s: ", (sc)->sc_ac.ac_if.if_xname); else log(loglevel, "carp: " ); addlog ("state transition: %s -> %s", carp_states[vhe-> state], carp_states[state]); addlog("\n"); } } while (0) |
2398 | carp_states[vhe->state], carp_states[state]))do { if (carp_opts[3] >= loglevel) { if (sc) log(loglevel, "%s: ", (sc)->sc_ac.ac_if.if_xname); else log(loglevel, "carp: " ); addlog ("state transition: %s -> %s", carp_states[vhe-> state], carp_states[state]); addlog("\n"); } } while (0); |
2399 | |
2400 | vhe->state = state; |
2401 | carp_update_lsmask(sc); |
2402 | |
2403 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/netinet/ip_carp.c" , 2403, "_kernel_lock_held()")); /* touching carp_vhosts */ |
2404 | |
2405 | sc->sc_ifsc_ac.ac_if.if_link_stateif_data.ifi_link_state = LINK_STATE_INVALID1; |
2406 | SRPL_FOREACH_LOCKED(vhe0, &sc->carp_vhosts, vhost_entries)for ((vhe0) = srp_get_locked(&(&sc->carp_vhosts)-> sl_head); (vhe0) != ((void *)0); (vhe0) = srp_get_locked(& ((vhe0))->vhost_entries.se_next)) { |
2407 | /* |
2408 | * Link must be up if at least one vhe is in state MASTER to |
2409 | * bring or keep route up. |
2410 | */ |
2411 | if (vhe0->state == MASTER) { |
2412 | sc->sc_ifsc_ac.ac_if.if_link_stateif_data.ifi_link_state = LINK_STATE_UP4; |
2413 | break; |
2414 | } else if (vhe0->state == BACKUP) { |
2415 | sc->sc_ifsc_ac.ac_if.if_link_stateif_data.ifi_link_state = LINK_STATE_DOWN2; |
2416 | } |
2417 | } |
2418 | if_link_state_change(&sc->sc_ifsc_ac.ac_if); |
2419 | } |
2420 | |
2421 | void |
2422 | carp_group_demote_adj(struct ifnet *ifp, int adj, char *reason) |
2423 | { |
2424 | struct ifg_list *ifgl; |
2425 | int *dm, need_ad; |
2426 | struct carp_softc *nil = NULL((void *)0); |
2427 | |
2428 | if (ifp->if_typeif_data.ifi_type == IFT_CARP0xf7) { |
2429 | dm = &((struct carp_softc *)ifp->if_softc)->sc_demote_cnt; |
2430 | if (*dm + adj >= 0) |
2431 | *dm += adj; |
2432 | else |
2433 | *dm = 0; |
2434 | } |
2435 | |
2436 | need_ad = 0; |
2437 | TAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next)for((ifgl) = ((&ifp->if_groups)->tqh_first); (ifgl) != ((void *)0); (ifgl) = ((ifgl)->ifgl_next.tqe_next)) { |
2438 | if (!strcmp(ifgl->ifgl_group->ifg_group, IFG_ALL"all")) |
2439 | continue; |
2440 | dm = &ifgl->ifgl_group->ifg_carp_demoted; |
2441 | |
2442 | if (*dm + adj >= 0) |
2443 | *dm += adj; |
2444 | else |
2445 | *dm = 0; |
2446 | |
2447 | if (adj > 0 && *dm == 1) |
2448 | need_ad = 1; |
2449 | CARP_LOG(LOG_ERR, nil,do { if (carp_opts[3] >= 3) { if (nil) log(3, "%s: ", (nil )->sc_ac.ac_if.if_xname); else log(3, "carp: "); addlog ("%s demoted group %s by %d to %d (%s)" , ifp->if_xname, ifgl->ifgl_group->ifg_group, adj, * dm, reason); addlog("\n"); } } while (0) |
2450 | ("%s demoted group %s by %d to %d (%s)",do { if (carp_opts[3] >= 3) { if (nil) log(3, "%s: ", (nil )->sc_ac.ac_if.if_xname); else log(3, "carp: "); addlog ("%s demoted group %s by %d to %d (%s)" , ifp->if_xname, ifgl->ifgl_group->ifg_group, adj, * dm, reason); addlog("\n"); } } while (0) |
2451 | ifp->if_xname, ifgl->ifgl_group->ifg_group,do { if (carp_opts[3] >= 3) { if (nil) log(3, "%s: ", (nil )->sc_ac.ac_if.if_xname); else log(3, "carp: "); addlog ("%s demoted group %s by %d to %d (%s)" , ifp->if_xname, ifgl->ifgl_group->ifg_group, adj, * dm, reason); addlog("\n"); } } while (0) |
2452 | adj, *dm, reason))do { if (carp_opts[3] >= 3) { if (nil) log(3, "%s: ", (nil )->sc_ac.ac_if.if_xname); else log(3, "carp: "); addlog ("%s demoted group %s by %d to %d (%s)" , ifp->if_xname, ifgl->ifgl_group->ifg_group, adj, * dm, reason); addlog("\n"); } } while (0); |
2453 | } |
2454 | if (need_ad) |
2455 | carp_send_ad_all(); |
2456 | } |
2457 | |
2458 | int |
2459 | carp_group_demote_count(struct carp_softc *sc) |
2460 | { |
2461 | struct ifg_list *ifgl; |
2462 | int count = 0; |
2463 | |
2464 | TAILQ_FOREACH(ifgl, &sc->sc_if.if_groups, ifgl_next)for((ifgl) = ((&sc->sc_ac.ac_if.if_groups)->tqh_first ); (ifgl) != ((void *)0); (ifgl) = ((ifgl)->ifgl_next.tqe_next )) |
2465 | count += ifgl->ifgl_group->ifg_carp_demoted; |
2466 | |
2467 | if (count == 0 && sc->sc_demote_cnt) |
2468 | count = sc->sc_demote_cnt; |
2469 | |
2470 | return (count > 255 ? 255 : count); |
2471 | } |
2472 | |
2473 | void |
2474 | carp_carpdev_state(void *v) |
2475 | { |
2476 | struct carp_softc *sc = v; |
2477 | struct ifnet *ifp0; |
2478 | int suppressed = sc->sc_suppress; |
2479 | |
2480 | if ((ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) == NULL((void *)0)) |
2481 | return; |
2482 | |
2483 | if (ifp0->if_link_stateif_data.ifi_link_state == LINK_STATE_DOWN2 || |
2484 | !(ifp0->if_flags & IFF_UP0x1)) { |
2485 | sc->sc_ifsc_ac.ac_if.if_flags &= ~IFF_RUNNING0x40; |
2486 | carp_del_all_timeouts(sc); |
2487 | carp_set_state_all(sc, INIT); |
2488 | sc->sc_suppress = 1; |
2489 | carp_setrun_all(sc, 0); |
2490 | if (!suppressed) |
2491 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, 1, "carpdev"); |
2492 | } else if (suppressed) { |
2493 | carp_set_state_all(sc, INIT); |
2494 | sc->sc_suppress = 0; |
2495 | carp_setrun_all(sc, 0); |
2496 | carp_group_demote_adj(&sc->sc_ifsc_ac.ac_if, -1, "carpdev"); |
2497 | } |
2498 | |
2499 | if_put(ifp0); |
2500 | } |
2501 | |
2502 | int |
2503 | carp_ether_addmulti(struct carp_softc *sc, struct ifreq *ifr) |
2504 | { |
2505 | struct ifnet *ifp0; |
2506 | struct carp_mc_entry *mc; |
2507 | u_int8_t addrlo[ETHER_ADDR_LEN6], addrhi[ETHER_ADDR_LEN6]; |
2508 | int error; |
2509 | |
2510 | ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx); |
2511 | if (ifp0 == NULL((void *)0)) |
2512 | return (EINVAL22); |
2513 | |
2514 | error = ether_addmulti(ifr, (struct arpcom *)&sc->sc_ac); |
2515 | if (error != ENETRESET52) { |
2516 | if_put(ifp0); |
2517 | return (error); |
2518 | } |
2519 | |
2520 | /* |
2521 | * This is new multicast address. We have to tell parent |
2522 | * about it. Also, remember this multicast address so that |
2523 | * we can delete them on unconfigure. |
2524 | */ |
2525 | mc = malloc(sizeof(*mc), M_DEVBUF2, M_NOWAIT0x0002); |
2526 | if (mc == NULL((void *)0)) { |
2527 | error = ENOMEM12; |
2528 | goto alloc_failed; |
2529 | } |
2530 | |
2531 | /* |
2532 | * As ether_addmulti() returns ENETRESET, following two |
2533 | * statement shouldn't fail. |
2534 | */ |
2535 | (void)ether_multiaddr(&ifr->ifr_addrifr_ifru.ifru_addr, addrlo, addrhi); |
2536 | ETHER_LOOKUP_MULTI(addrlo, addrhi, &sc->sc_ac, mc->mc_enm)do { for ((mc->mc_u.mcu_enm) = ((&(&sc->sc_ac)-> ac_multiaddrs)->lh_first); (mc->mc_u.mcu_enm) != ((void *)0) && (__builtin_memcmp(((mc->mc_u.mcu_enm)-> enm_addrlo), ((addrlo)), (6)) != 0 || __builtin_memcmp(((mc-> mc_u.mcu_enm)->enm_addrhi), ((addrhi)), (6)) != 0); (mc-> mc_u.mcu_enm) = (((mc->mc_u.mcu_enm))->enm_list.le_next )); } while ( 0); |
2537 | memcpy(&mc->mc_addr, &ifr->ifr_addr, ifr->ifr_addr.sa_len)__builtin_memcpy((&mc->mc_addr), (&ifr->ifr_ifru .ifru_addr), (ifr->ifr_ifru.ifru_addr.sa_len)); |
2538 | LIST_INSERT_HEAD(&sc->carp_mc_listhead, mc, mc_entries)do { if (((mc)->mc_entries.le_next = (&sc->carp_mc_listhead )->lh_first) != ((void *)0)) (&sc->carp_mc_listhead )->lh_first->mc_entries.le_prev = &(mc)->mc_entries .le_next; (&sc->carp_mc_listhead)->lh_first = (mc); (mc)->mc_entries.le_prev = &(&sc->carp_mc_listhead )->lh_first; } while (0); |
2539 | |
2540 | error = (*ifp0->if_ioctl)(ifp0, SIOCADDMULTI((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((49))), (caddr_t)ifr); |
2541 | if (error != 0) |
2542 | goto ioctl_failed; |
2543 | |
2544 | if_put(ifp0); |
2545 | |
2546 | return (error); |
2547 | |
2548 | ioctl_failed: |
2549 | LIST_REMOVE(mc, mc_entries)do { if ((mc)->mc_entries.le_next != ((void *)0)) (mc)-> mc_entries.le_next->mc_entries.le_prev = (mc)->mc_entries .le_prev; *(mc)->mc_entries.le_prev = (mc)->mc_entries. le_next; ((mc)->mc_entries.le_prev) = ((void *)-1); ((mc)-> mc_entries.le_next) = ((void *)-1); } while (0); |
2550 | free(mc, M_DEVBUF2, sizeof(*mc)); |
2551 | alloc_failed: |
2552 | (void)ether_delmulti(ifr, (struct arpcom *)&sc->sc_ac); |
2553 | if_put(ifp0); |
2554 | |
2555 | return (error); |
2556 | } |
2557 | |
2558 | int |
2559 | carp_ether_delmulti(struct carp_softc *sc, struct ifreq *ifr) |
2560 | { |
2561 | struct ifnet *ifp0; |
2562 | struct ether_multi *enm; |
2563 | struct carp_mc_entry *mc; |
2564 | u_int8_t addrlo[ETHER_ADDR_LEN6], addrhi[ETHER_ADDR_LEN6]; |
2565 | int error; |
2566 | |
2567 | ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx); |
2568 | if (ifp0 == NULL((void *)0)) |
2569 | return (EINVAL22); |
2570 | |
2571 | /* |
2572 | * Find a key to lookup carp_mc_entry. We have to do this |
2573 | * before calling ether_delmulti for obvious reason. |
2574 | */ |
2575 | if ((error = ether_multiaddr(&ifr->ifr_addrifr_ifru.ifru_addr, addrlo, addrhi)) != 0) |
2576 | goto rele; |
2577 | ETHER_LOOKUP_MULTI(addrlo, addrhi, &sc->sc_ac, enm)do { for ((enm) = ((&(&sc->sc_ac)->ac_multiaddrs )->lh_first); (enm) != ((void *)0) && (__builtin_memcmp (((enm)->enm_addrlo), ((addrlo)), (6)) != 0 || __builtin_memcmp (((enm)->enm_addrhi), ((addrhi)), (6)) != 0); (enm) = (((enm ))->enm_list.le_next)); } while ( 0); |
2578 | if (enm == NULL((void *)0)) { |
2579 | error = EINVAL22; |
2580 | goto rele; |
2581 | } |
2582 | |
2583 | LIST_FOREACH(mc, &sc->carp_mc_listhead, mc_entries)for((mc) = ((&sc->carp_mc_listhead)->lh_first); (mc )!= ((void *)0); (mc) = ((mc)->mc_entries.le_next)) |
2584 | if (mc->mc_enmmc_u.mcu_enm == enm) |
2585 | break; |
2586 | |
2587 | /* We won't delete entries we didn't add */ |
2588 | if (mc == NULL((void *)0)) { |
2589 | error = EINVAL22; |
2590 | goto rele; |
2591 | } |
2592 | |
2593 | error = ether_delmulti(ifr, (struct arpcom *)&sc->sc_ac); |
2594 | if (error != ENETRESET52) |
2595 | goto rele; |
2596 | |
2597 | /* We no longer use this multicast address. Tell parent so. */ |
2598 | error = (*ifp0->if_ioctl)(ifp0, SIOCDELMULTI((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((50))), (caddr_t)ifr); |
2599 | if (error == 0) { |
2600 | /* And forget about this address. */ |
2601 | LIST_REMOVE(mc, mc_entries)do { if ((mc)->mc_entries.le_next != ((void *)0)) (mc)-> mc_entries.le_next->mc_entries.le_prev = (mc)->mc_entries .le_prev; *(mc)->mc_entries.le_prev = (mc)->mc_entries. le_next; ((mc)->mc_entries.le_prev) = ((void *)-1); ((mc)-> mc_entries.le_next) = ((void *)-1); } while (0); |
2602 | free(mc, M_DEVBUF2, sizeof(*mc)); |
2603 | } else |
2604 | (void)ether_addmulti(ifr, (struct arpcom *)&sc->sc_ac); |
2605 | rele: |
2606 | if_put(ifp0); |
2607 | return (error); |
2608 | } |
2609 | |
2610 | /* |
2611 | * Delete any multicast address we have asked to add from parent |
2612 | * interface. Called when the carp is being unconfigured. |
2613 | */ |
2614 | void |
2615 | carp_ether_purgemulti(struct carp_softc *sc) |
2616 | { |
2617 | struct ifnet *ifp0; /* Parent. */ |
2618 | struct carp_mc_entry *mc; |
2619 | union { |
2620 | struct ifreq ifreq; |
2621 | struct { |
2622 | char ifr_name[IFNAMSIZ16]; |
2623 | struct sockaddr_storage ifr_ss; |
2624 | } ifreq_storage; |
2625 | } u; |
2626 | struct ifreq *ifr = &u.ifreq; |
2627 | |
2628 | if ((ifp0 = if_get(sc->sc_carpdevidxsc_ac.ac_if.if_carp_ptr.carp_idx)) == NULL((void *)0)) |
2629 | return; |
2630 | |
2631 | memcpy(ifr->ifr_name, ifp0->if_xname, IFNAMSIZ)__builtin_memcpy((ifr->ifr_name), (ifp0->if_xname), (16 )); |
2632 | while ((mc = LIST_FIRST(&sc->carp_mc_listhead)((&sc->carp_mc_listhead)->lh_first)) != NULL((void *)0)) { |
2633 | memcpy(&ifr->ifr_addr, &mc->mc_addr, mc->mc_addr.ss_len)__builtin_memcpy((&ifr->ifr_ifru.ifru_addr), (&mc-> mc_addr), (mc->mc_addr.ss_len)); |
2634 | (void)(*ifp0->if_ioctl)(ifp0, SIOCDELMULTI((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((50))), (caddr_t)ifr); |
2635 | LIST_REMOVE(mc, mc_entries)do { if ((mc)->mc_entries.le_next != ((void *)0)) (mc)-> mc_entries.le_next->mc_entries.le_prev = (mc)->mc_entries .le_prev; *(mc)->mc_entries.le_prev = (mc)->mc_entries. le_next; ((mc)->mc_entries.le_prev) = ((void *)-1); ((mc)-> mc_entries.le_next) = ((void *)-1); } while (0); |
2636 | free(mc, M_DEVBUF2, sizeof(*mc)); |
2637 | } |
2638 | |
2639 | if_put(ifp0); |
2640 | } |
2641 | |
2642 | void |
2643 | carp_vh_ref(void *null, void *v) |
2644 | { |
2645 | struct carp_vhost_entry *vhe = v; |
2646 | |
2647 | refcnt_take(&vhe->vhost_refcnt); |
2648 | } |
2649 | |
2650 | void |
2651 | carp_vh_unref(void *null, void *v) |
2652 | { |
2653 | struct carp_vhost_entry *vhe = v; |
2654 | |
2655 | if (refcnt_rele(&vhe->vhost_refcnt)) { |
2656 | carp_sc_unref(NULL((void *)0), vhe->parent_sc); |
2657 | free(vhe, M_DEVBUF2, sizeof(*vhe)); |
2658 | } |
2659 | } |
2660 | |
2661 | void |
2662 | carp_sc_ref(void *null, void *s) |
2663 | { |
2664 | struct carp_softc *sc = s; |
2665 | |
2666 | refcnt_take(&sc->sc_refcnt); |
2667 | } |
2668 | |
2669 | void |
2670 | carp_sc_unref(void *null, void *s) |
2671 | { |
2672 | struct carp_softc *sc = s; |
2673 | |
2674 | refcnt_rele_wake(&sc->sc_refcnt); |
2675 | } |