| 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 | } |