/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "conditions.h" #include "events.h" #include "ncp.h" #include "ncu.h" #include "objects.h" #include "util.h" /* * ncu_ip.c - contains routines that are IP interface-specific for NCUs. */ #define STATELESS_RUNNING (IFF_RUNNING | IFF_UP | IFF_ADDRCONF) #define DHCP_RUNNING (IFF_RUNNING | IFF_UP | IFF_DHCPRUNNING) static void *start_dhcp_thread(void *); static void nwamd_down_interface(const char *, uint_t, int); static boolean_t stateless_running(const nwamd_ncu_t *); char * nwamd_sockaddr_to_str(const struct sockaddr *sockaddr, char *str, size_t len) { if (icfg_sockaddr_to_str(sockaddr->sa_family, sockaddr, str, len) != ICFG_SUCCESS) { return (NULL); } else { return (str); } } static void nwamd_log_if_address(int severity, struct nwamd_if_address *nifa) { char str[INET6_ADDRSTRLEN]; nlog(severity, "%s address %s is %s", nifa->address.sa_family == AF_INET ? "IPv4" : "IPv6", nwamd_sockaddr_to_str(&nifa->address, str, sizeof (str)), nifa->configured ? "configured" : "not configured"); } void nwamd_propogate_link_up_down_to_ip(const char *linkname, boolean_t up) { nwamd_object_t ip_ncu = nwamd_ncu_object_find(NWAM_NCU_TYPE_INTERFACE, linkname); nwamd_ncu_t *ncu; if (ip_ncu == NULL) { nlog(LOG_DEBUG, "nwamd_propogate_link_up_down_to_ip: no IP NCU " "for link %s, cannot propogate %s event", linkname, up ? "up" : "down"); return; } ncu = ip_ncu->nwamd_object_data; if (ncu->ncu_enabled) { if (ip_ncu->nwamd_object_aux_state == NWAM_AUX_STATE_UNINITIALIZED) { nlog(LOG_DEBUG, "nwamd_propogate_link_up_down_to_ip: will not " "propogate link %s event as IP NCU %s is being " "removed", up ? "up" : "down", linkname); } else { nlog(LOG_DEBUG, "nwamd_propogate_link_up_down_to_ip: propogating " "link %s event to interface %s", up ? "up" : "down", linkname); nwamd_object_set_state(NWAM_OBJECT_TYPE_NCU, ip_ncu->nwamd_object_name, up ? NWAM_STATE_OFFLINE_TO_ONLINE : NWAM_STATE_ONLINE_TO_OFFLINE, up ? NWAM_AUX_STATE_INITIALIZED : NWAM_AUX_STATE_CONDITIONS_NOT_MET); } } else { nlog(LOG_DEBUG, "nwamd_propogate_link_up_down_to_ip: not propogating " "link %s event to interface %s, IP NCU is disabled", up ? "up" : "down", linkname); } nwamd_object_release(ip_ncu); } /* * Returns the value associated with the given symbol for the given * interface. The interface may be NULL, in which case the primary * interface is used. * This function substitutes the need to call dhcpinfo(1), thus it is * very similar to the implementation of dhcpinfo(1). * When multiple values need to be returned (e.g., nameservers), they * are separated by a space ' '. */ char * nwamd_get_dhcpinfo_data(const char *sym_name, char *ifname) { dhcp_symbol_t *entry; dhcp_optnum_t optnum; dhcp_ipc_request_t *request; dhcp_ipc_reply_t *reply; DHCP_OPT *opt; size_t opt_len; char *value; /* return value */ int err; char errmsg[LINE_MAX]; /* if interface is not given, change it to empty string */ if (ifname == NULL) ifname = ""; /* find code and category in dhcp_inittab(4) */ entry = inittab_getbyname(ITAB_CAT_SITE | ITAB_CAT_STANDARD | ITAB_CAT_VENDOR | ITAB_CAT_FIELD, ITAB_CONS_INFO, sym_name); if (entry == NULL) { (void) snprintf(errmsg, LINE_MAX, "unknown identifier: %s", sym_name); goto fail; } /* allocate request */ optnum.code = entry->ds_code; optnum.category = entry->ds_category; optnum.size = entry->ds_max * inittab_type_to_size(entry); request = dhcp_ipc_alloc_request(DHCP_GET_TAG, ifname, &optnum, sizeof (dhcp_optnum_t), DHCP_TYPE_OPTNUM); if (request == NULL) { (void) snprintf(errmsg, LINE_MAX, "failed dhcp alloc request"); goto fail; } /* make the request */ err = dhcp_ipc_make_request(request, &reply, DHCP_IPC_WAIT_DEFAULT); if (err != 0 || reply->return_code != 0) { (void) snprintf(errmsg, LINE_MAX, "%s", dhcp_ipc_strerror(err == 0 ? reply->return_code : err)); } /* get data from the reply */ opt = dhcp_ipc_get_data(reply, &opt_len, NULL); if (opt_len == 0) { (void) snprintf(errmsg, LINE_MAX, "invalid data"); goto fail; } /* check protocol error */ if (opt_len < 2 || (opt_len -2 != opt->len)) { (void) snprintf(errmsg, LINE_MAX, "data length mismatch"); goto fail; } opt_len -= 2; /* decode the data into ascii */ value = inittab_decode(entry, opt->value, opt_len, B_TRUE); if (value == NULL) { (void) snprintf(errmsg, LINE_MAX, "cannot decode reply"); goto fail; } free(request); free(reply); return (value); fail: nlog(LOG_DEBUG, "get_dhcpinfo_data() failed: %s", errmsg); free(request); free(reply); return (NULL); } void nwamd_dhcp_release(const char *ifname) { dhcp_ipc_reply_t *reply = NULL; dhcp_ipc_request_t *request; int rc; /* Now allocate and send the request */ request = dhcp_ipc_alloc_request(DHCP_RELEASE, ifname, NULL, 0, DHCP_TYPE_NONE); if (request == NULL) { nlog(LOG_DEBUG, "nwamd_dhcp_release: dhcp_ipc_alloc_request : " "%s", strerror(errno)); return; } rc = dhcp_ipc_make_request(request, &reply, 1); free(request); free(reply); reply = NULL; if (rc != 0) { /* Fall back to drop request */ request = dhcp_ipc_alloc_request(DHCP_DROP, ifname, NULL, 0, DHCP_TYPE_NONE); if (request == NULL) { nlog(LOG_DEBUG, "nwamd_dhcp_release: " "dhcp_ipc_alloc_request : %s", strerror(errno)); return; } (void) dhcp_ipc_make_request(request, &reply, 1); free(request); free(reply); } } static boolean_t add_ip_address(const char *ifname, struct nwamd_if_address *nifa, boolean_t logical_if) { icfg_handle_t h, newh; icfg_if_t intf; uint64_t flags; int rc; struct sockaddr_in bcastaddr; char str[INET6_ADDRSTRLEN]; (void) strlcpy(intf.if_name, ifname, sizeof (intf.if_name)); intf.if_protocol = nifa->address.sa_family; nlog(LOG_DEBUG, "add_ip_address: %s address %s for link %s", logical_if ? "adding" : "setting", nwamd_sockaddr_to_str(&nifa->address, str, sizeof (str)), intf.if_name); if (icfg_open(&h, &intf) != ICFG_SUCCESS) { nlog(LOG_ERR, "add_ip_address: icfg_open failed on %s", ifname); return (B_FALSE); } /* * When working with the physical interface, we need to be careful * to set the prefixlen and broadcast addresses before setting the * IP address, otherwise RTM_DELADDRs for the old broadcast/netmask * will confuse us into thinking we've lost the address we've just * assigned. */ if (logical_if) { rc = icfg_add_addr(h, &newh, (const struct sockaddr *)&nifa->address, intf.if_protocol == AF_INET ? sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)); } else { newh = h; /* Make sure DHCP is no longer running */ if (icfg_get_flags(newh, &flags) == ICFG_SUCCESS) { if (flags & IFF_DHCPRUNNING) { nlog(LOG_DEBUG, "add_ip_address: " "turning off DHCP for %s", ifname); nwamd_dhcp_release(ifname); } } /* * Set interface IFF_UP if not already. Do this and * setting of prefixlen/broadcast addresses as otherwise * these can trigger an RTM_DELADDR that makes it appear * that the address has gone away. */ rc = icfg_set_addr(newh, (const struct sockaddr *)&nifa->address, intf.if_protocol == AF_INET ? sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)); } if (rc != ICFG_SUCCESS) { nlog(LOG_DEBUG, "add_ip_address: add of ipaddr failed " "for %s: %d", ifname, rc); goto out; } if (nifa->prefix != 0) { if ((rc = icfg_set_prefixlen(newh, nifa->prefix)) != ICFG_SUCCESS) { nlog(LOG_ERR, "add_ip_address: icfg_set_prefix %d " "failed on %s: %s", nifa->prefix, ifname, icfg_errmsg(rc)); } else if (intf.if_protocol == AF_INET) { /* Set broadcast address based on address, prefixlen */ bcastaddr.sin_addr.s_addr = /*LINTED*/ ((struct sockaddr_in *)&nifa->address) ->sin_addr.s_addr | htonl(0xffffffff >> nifa->prefix); if ((rc = icfg_set_broadcast(newh, &bcastaddr)) != ICFG_SUCCESS) { nlog(LOG_ERR, "add_ip_address: " "icfg_set_broadcast(%s) failed on %s: %s", inet_ntoa(bcastaddr.sin_addr), ifname, icfg_errmsg(rc)); } } } if (rc == ICFG_SUCCESS) { if (icfg_get_flags(newh, &flags) == ICFG_SUCCESS) { if ((flags & IFF_UP) == 0) rc = icfg_set_flags(newh, flags | IFF_UP); } else { nlog(LOG_DEBUG, "add_ip_address: couldn't bring up %s", ifname); } } out: /* Check if address was a duplicate */ if (rc == ICFG_DAD_FOUND || (flags & IFF_DUPLICATE) != 0) { char *object_name; nwam_error_t err; nlog(LOG_INFO, "add_ip_address: " "duplicate address detected on %s", ifname); if ((err = nwam_ncu_name_to_typed_name(ifname, NWAM_NCU_TYPE_INTERFACE, &object_name)) == NWAM_SUCCESS) { nwamd_object_set_state(NWAM_OBJECT_TYPE_NCU, object_name, NWAM_STATE_MAINTENANCE, NWAM_AUX_STATE_IF_DUPLICATE_ADDR); free(object_name); } else { nlog(LOG_ERR, "add_ip_address: could not " "create state event for %s: %s", ifname, nwam_strerror(err)); } rc = ICFG_DAD_FOUND; } if (h != newh) icfg_close(newh); icfg_close(h); return (rc == ICFG_SUCCESS); } void nwamd_add_default_routes(nwamd_ncu_t *ncu) { nwamd_if_t *nif = &ncu->ncu_node.u_if; char str[INET6_ADDRSTRLEN]; if (nif->nwamd_if_ipv4 && nif->nwamd_if_ipv4_default_route_set) { struct sockaddr_in v4dest, v4mask; v4dest.sin_addr.s_addr = htonl(INADDR_ANY); v4dest.sin_family = AF_INET; v4mask.sin_addr.s_addr = 0; v4mask.sin_family = AF_INET; nlog(LOG_DEBUG, "nwamd_add_default_routes: adding default " "route %s", nwamd_sockaddr_to_str ((struct sockaddr *)&nif->nwamd_if_ipv4_default_route, str, sizeof (str))); nwamd_add_route((struct sockaddr *)&v4dest, (struct sockaddr *)&v4mask, (struct sockaddr *)&nif->nwamd_if_ipv4_default_route, ncu->ncu_name); } if (nif->nwamd_if_ipv6 && nif->nwamd_if_ipv6_default_route_set) { struct sockaddr_in6 v6dest, v6mask; (void) bzero(&v6dest, sizeof (struct sockaddr_in6)); v6dest.sin6_family = AF_INET6; (void) bzero(&v6mask, sizeof (struct sockaddr_in6)); v6mask.sin6_family = AF_INET6; nlog(LOG_DEBUG, "nwamd_add_default_routes: adding default " "route %s", nwamd_sockaddr_to_str ((struct sockaddr *)&nif->nwamd_if_ipv6_default_route, str, sizeof (str))); nwamd_add_route((struct sockaddr *)&v6dest, (struct sockaddr *)&v6mask, (struct sockaddr *)&nif->nwamd_if_ipv6_default_route, ncu->ncu_name); } } void nwamd_dhcp_inform(nwamd_ncu_t *ncu) { struct nwamd_dhcp_thread_arg *arg; char *name = NULL; pthread_attr_t attr; arg = malloc(sizeof (*arg)); if (arg == NULL) { nlog(LOG_ERR, "nwamd_dhcp_inform: error allocating memory " "for dhcp request"); free(name); return; } arg->name = strdup(ncu->ncu_name); arg->type = DHCP_INFORM; arg->timeout = DHCP_IPC_WAIT_DEFAULT; (void) pthread_attr_init(&attr); (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); if (pthread_create(NULL, &attr, start_dhcp_thread, arg) == -1) { nlog(LOG_ERR, "Cannot start dhcp thread"); free(name); free(arg); (void) pthread_attr_destroy(&attr); return; } (void) pthread_attr_destroy(&attr); } static boolean_t addresses_match(const struct sockaddr *addr1, const struct sockaddr *addr2) { if (addr1->sa_family != addr2->sa_family) return (B_FALSE); switch (addr1->sa_family) { case AF_INET: /*LINTED*/ return (memcmp(&((struct sockaddr_in *)addr1)->sin_addr, /*LINTED*/ &((struct sockaddr_in *)addr2)->sin_addr, sizeof (struct in_addr)) == 0); case AF_INET6: /*LINTED*/ return (memcmp(&((struct sockaddr_in6 *)addr1)->sin6_addr, /*LINTED*/ &((struct sockaddr_in6 *)addr2)->sin6_addr, sizeof (struct in6_addr)) == 0); default: return (B_FALSE); } } /* * Returns the nwamd_if_address structure for the given static address, * NULL if not found. */ static struct nwamd_if_address * find_static_address(const struct sockaddr *addr, const nwamd_ncu_t *ncu) { struct nwamd_if_address *n, *nifa = ncu->ncu_node.u_if.nwamd_if_list; char str[INET6_ADDRSTRLEN]; nlog(LOG_DEBUG, "find_static_address %s", nwamd_sockaddr_to_str(addr, str, sizeof (str))); for (n = nifa; n != NULL; n = n->next) { if (addresses_match(addr, &n->address)) return (n); } return (NULL); } /* * Returns the nwamd_if_address structure representing the non-static address * in the NCU. dhcp is used to detemrine if the DHCP (stateful for v6) * structure is needed or the stateless/autoconf structure for the given * family. dhcp should be B_TRUE if looking for v4. Will only return the * nwamd_if_address if the relevant address is configured (v4 DHCP, v6 * stateless/stateful) for the NCU. * * Returns NULL if structure is not found. */ static struct nwamd_if_address * find_nonstatic_address(const nwamd_ncu_t *ncu, ushort_t family, boolean_t dhcp) { struct nwamd_if_address *n, *nifa = ncu->ncu_node.u_if.nwamd_if_list; const nwamd_if_t *u_if = &ncu->ncu_node.u_if; nlog(LOG_DEBUG, "find_nonstatic_address: %s", dhcp ? "dhcp" : "stateless"); for (n = nifa; n != NULL; n = n->next) { if (family == AF_INET) { if (!dhcp) return (NULL); if (n->address.sa_family == family && n->dhcp_if && u_if->nwamd_if_dhcp_configured) return (n); } else if (family == AF_INET6) { if (n->address.sa_family == family) { if (dhcp && n->dhcp_if && u_if->nwamd_if_stateful_configured) return (n); else if (!dhcp && n->stateless_if && u_if->nwamd_if_stateless_configured) return (n); } } } return (NULL); } /* * Sets "configured" nwam_if_address value for corresponding address. * Used when we process IF_STATE events to handle RTM_NEWADDR/DELADDRs. */ static boolean_t update_address_configured_value(const struct sockaddr *configured_addr, nwamd_ncu_t *ncu, boolean_t configured) { struct nwamd_if_address *n; char str[INET6_ADDRSTRLEN]; nlog(LOG_DEBUG, "update_address_configured_value(%s, %s, %s)", nwamd_sockaddr_to_str(configured_addr, str, sizeof (str)), ncu->ncu_name, configured ? "configure" : "unconfigure"); n = find_static_address(configured_addr, ncu); if (n) { n->configured = configured; nlog(LOG_DEBUG, "update_address_configured_value: marking " "address %s", nwamd_sockaddr_to_str(&n->address, str, sizeof (str))); return (B_TRUE); } return (B_FALSE); } void nwamd_update_addresses_unconfigured(nwamd_ncu_t *ncu, sa_family_t af) { struct nwamd_if_address *n, *nifa = ncu->ncu_node.u_if.nwamd_if_list; for (n = nifa; n != NULL; n = n->next) if (af == AF_UNSPEC || n->address.sa_family == af) { n->configured = B_FALSE; nwamd_log_if_address(LOG_DEBUG, n); } } /* * Are one or more static addresses configured? */ boolean_t nwamd_static_addresses_configured(nwamd_ncu_t *ncu, sa_family_t family) { struct nwamd_if_address *n; for (n = ncu->ncu_node.u_if.nwamd_if_list; n != NULL; n = n->next) { if ((family == AF_UNSPEC || family == n->address.sa_family) && n->configured && !n->dhcp_if && !n->stateless_if) return (B_TRUE); } nlog(LOG_DEBUG, "no static addresses configured for %s", ncu->ncu_name); return (B_FALSE); } /* * Is DHCP probably managing an address on this index. We decide that it is * probably managing an address if there is an interface with IFF_DHCP set * that isn't in our set of static addresses. Note that IFF_DHCP gets set * on static addresses when we do a dhcp inform and if that list has changed * recently then the result of this function could be erronous. */ boolean_t nwamd_dhcp_managing(int protocol, nwamd_ncu_t *ncu) { icfg_if_t *iflist; icfg_handle_t ifh; int numif, i; struct sockaddr_storage addr; socklen_t len; int prefixlen; uint64_t flags; boolean_t rv = B_FALSE; if (icfg_get_if_list(&iflist, &numif, protocol, ICFG_PLUMBED) != ICFG_SUCCESS) { return (B_TRUE); } for (i = 0; i < numif; i++) { if (strncmp(iflist[i].if_name, ncu->ncu_name, strlen(ncu->ncu_name)) != 0) continue; if (icfg_open(&ifh, &iflist[i]) != ICFG_SUCCESS) continue; /* is this address an expected static one? */ len = sizeof (addr); if (icfg_get_addr(ifh, (struct sockaddr *)&addr, &len, &prefixlen, B_FALSE) != ICFG_SUCCESS || find_static_address((struct sockaddr *)&addr, ncu) != NULL) { icfg_close(ifh); continue; } /* * For IPv4, DHCPRUNNING flag is set when dhcpagent is in * the process of getting an address, but doesn't have one * yet (interface has 0.0.0.0). For IPv6, DHCPRUNNING flag * is set on the link-local address if trying to get a * stateful address. In both cases, consider the interface * as not being managed by DHCP and skip checking of flags. */ if ((protocol == AF_INET && ((struct sockaddr_in *)&addr)->sin_addr.s_addr == INADDR_ANY) || (protocol == AF_INET6 && IN6_IS_ADDR_LINKLOCAL( &((struct sockaddr_in6 *)&addr)->sin6_addr))) { icfg_close(ifh); continue; } if (icfg_get_flags(ifh, &flags) == ICFG_SUCCESS && (flags & IFF_DHCPRUNNING)) { /* * If we get here we have an address that has the * DHCP flag set and isn't an expected static address. */ icfg_close(ifh); rv = B_TRUE; break; } } icfg_free_if_list(iflist); return (rv); } static boolean_t nwamd_v4_requested(nwamd_ncu_t *ncu) { boolean_t anyv4_requested; nwamd_if_t *u_if; anyv4_requested = B_FALSE; u_if = &ncu->ncu_node.u_if; if (u_if->nwamd_if_dhcp_requested) { anyv4_requested = B_TRUE; } else { struct nwamd_if_address *a; for (a = u_if->nwamd_if_list; a != NULL && a->address.sa_family != AF_INET; a = a->next) /* Empty loop body */; if (a != NULL) anyv4_requested = B_TRUE; } return (anyv4_requested); } static boolean_t nwamd_v6_requested(nwamd_ncu_t *ncu) { boolean_t anyv6_requested; nwamd_if_t *u_if; anyv6_requested = B_FALSE; u_if = &ncu->ncu_node.u_if; if (u_if->nwamd_if_stateful_requested || u_if->nwamd_if_stateless_requested) { anyv6_requested = B_TRUE; } else { struct nwamd_if_address *a; for (a = u_if->nwamd_if_list; a != NULL && a->address.sa_family != AF_INET6; a = a->next) /* Empty loop body */; if (a != NULL) anyv6_requested = B_TRUE; } return (anyv6_requested); } /* * Bring up the ncu if we have the right combination of requested configuration * and actual configuration and up is true, or bring down the ncu if no * addresses are configured, and up is false. */ static void interface_ncu_up_down(nwamd_ncu_t *ncu, boolean_t up) { boolean_t ncu_online; char *name; assert(ncu->ncu_type == NWAM_NCU_TYPE_INTERFACE); /* * If V4 with or without V6 is configured then one of its interfaces * needs to be up for the ncu to come online. If only V6 is requested * then one of its interfaces needs to be up for the ncu to come online. */ ncu_online = B_FALSE; if (nwamd_v4_requested(ncu)) { if (nwamd_dhcp_managing(AF_INET, ncu) || nwamd_static_addresses_configured(ncu, AF_INET)) ncu_online = B_TRUE; } else if (nwamd_v6_requested(ncu)) { if ((nwamd_dhcp_managing(AF_INET6, ncu) || stateless_running(ncu) || nwamd_static_addresses_configured(ncu, AF_INET6))) ncu_online = B_TRUE; } if (nwam_ncu_name_to_typed_name(ncu->ncu_name, ncu->ncu_type, &name) != NWAM_SUCCESS) { nlog(LOG_DEBUG, "interface_ncu_up_down: " "nwam_ncu_name_to_typed_name failed"); return; } if (ncu_online && up) { nlog(LOG_DEBUG, "interface_ncu_up_down: " "bringing %s up", name); nwamd_object_set_state(NWAM_OBJECT_TYPE_NCU, name, NWAM_STATE_OFFLINE_TO_ONLINE, NWAM_AUX_STATE_UP); } else if (!ncu_online && !up) { nlog(LOG_DEBUG, "interface_ncu_up_down: " "bringing %s down", name); nwamd_object_set_state(NWAM_OBJECT_TYPE_NCU, name, NWAM_STATE_ONLINE_TO_OFFLINE, NWAM_AUX_STATE_DOWN); } free(name); } static void interface_ncu_up(nwamd_ncu_t *ncu) { interface_ncu_up_down(ncu, B_TRUE); } static void interface_ncu_down(nwamd_ncu_t *ncu) { interface_ncu_up_down(ncu, B_FALSE); } /* Callback to find if DHCP is running on the interface index */ static int flags_set_for_ifindex_cb(icfg_if_t *intf, void *arg, uint64_t flags_wanted) { int *indexp = arg; icfg_handle_t h; int index; uint64_t flags = 0; if (icfg_open(&h, intf) != ICFG_SUCCESS) { nlog(LOG_ERR, "flags_set_for_ifindex_cb: icfg_open failed"); return (0); } if (icfg_get_index(h, &index) != ICFG_SUCCESS) { nlog(LOG_ERR, "flags_set_for_ifindex_cb: icfg_get_index failed"); icfg_close(h); return (0); } if (index != *indexp) { icfg_close(h); return (0); } if (icfg_get_flags(h, &flags) != ICFG_SUCCESS) { nlog(LOG_ERR, "flags_set_for_ifindex_cb: icfg_get_flags failed"); } icfg_close(h); return ((flags & flags_wanted) == flags_wanted); } static int stateless_running_for_ifindex_cb(icfg_if_t *intf, void *arg) { return (flags_set_for_ifindex_cb(intf, arg, IFF_RUNNING | IFF_ADDRCONF | IFF_UP)); } /* * Is autoconf running on the interface with specified ifindex? */ static boolean_t stateless_running_for_ifindex(int ifindex) { return (icfg_iterate_if(AF_INET6, ICFG_PLUMBED, &ifindex, stateless_running_for_ifindex_cb) != 0); } static boolean_t stateless_running(const nwamd_ncu_t *ncu) { int index; icfg_if_t intf; icfg_handle_t ifh; intf.if_protocol = AF_INET6; (void) strlcpy(intf.if_name, ncu->ncu_name, sizeof (intf.if_name)); if (icfg_open(&ifh, &intf) != ICFG_SUCCESS) { nlog(LOG_ERR, "stateless_running: icfg_open(%s) failed", ncu->ncu_name); return (B_FALSE); } if (icfg_get_index(ifh, &index) != ICFG_SUCCESS) { nlog(LOG_ERR, "stateless_running: icfg_get_index(%s) failed", ncu->ncu_name); return (B_FALSE); } icfg_close(ifh); return (stateless_running_for_ifindex(index)); } void nwamd_configure_interface_addresses(nwamd_ncu_t *ncu) { struct nwamd_if_address *nifa = ncu->ncu_node.u_if.nwamd_if_list; struct nwamd_if_address *n; int num_configured_v4 = 0; boolean_t add_logical_if; nlog(LOG_DEBUG, "nwamd_configure_interface_addresses(%s)", ncu->ncu_name); /* * Add static addresses. For IPv4, we only use the physical interface * (i.e. not a logical interface) if DHCP has not been requested and * this is the first address to be configured. */ for (n = nifa; n != NULL; n = n->next) { if (n->configured || n->dhcp_if || n->stateless_if) continue; switch (n->address.sa_family) { case AF_INET: add_logical_if = (num_configured_v4 > 0 || ncu->ncu_node.u_if.nwamd_if_dhcp_requested); num_configured_v4++; break; case AF_INET6: add_logical_if = B_TRUE; break; } n->configured = add_ip_address(ncu->ncu_name, n, add_logical_if); } } static int lifnum_from_ifname(const char *ifname) { char *lifstr = strchr(ifname, ':'); if (lifstr != NULL) { lifstr++; return (atoi(lifstr)); } return (0); } /* * Copies the ifname (with lifnum) associated with the given address. * Returns B_TRUE if a match is found, B_FASLE otherwise. */ static boolean_t ifname_for_addr(const struct sockaddr *caddr, char *ifname, int len) { struct sockaddr_in6 addr; int numif, i, prefixlen; icfg_if_t *iflist; icfg_handle_t ifh; socklen_t slen; if (icfg_get_if_list(&iflist, &numif, caddr->sa_family, ICFG_PLUMBED) != ICFG_SUCCESS) { nlog(LOG_DEBUG, "ifname_for_addr: icfg_get_if_list failed"); return (B_FALSE); } for (i = 0; i < numif; i++) { if (icfg_open(&ifh, &iflist[i]) != ICFG_SUCCESS) { nlog(LOG_ERR, "ifname_for_addr: icfg_open %s failed", iflist[i].if_name); continue; } slen = sizeof (addr); if (icfg_get_addr(ifh, (struct sockaddr *)&addr, &slen, &prefixlen, B_FALSE) != ICFG_SUCCESS) { nlog(LOG_ERR, "ifname_for_addr: " "icfg_get_addr %s failed", iflist[i].if_name); } else { /* Compare addresses */ if (addresses_match((struct sockaddr *)&addr, caddr)) { (void) strlcpy(ifname, iflist[i].if_name, len); icfg_close(ifh); icfg_free_if_list(iflist); return (B_TRUE); } } icfg_close(ifh); } icfg_free_if_list(iflist); return (B_FALSE); } /* * This event tells us that an interface address has appeared or disappeared, * or that the interface flags on an interface have changed. */ void nwamd_ncu_handle_if_state_event(nwamd_event_t event) { nwam_event_t evm; nwamd_object_t ncu_obj; nwamd_ncu_t *ncu; nwam_state_t state; nwam_aux_state_t aux_state; ncu_obj = nwamd_object_find(NWAM_OBJECT_TYPE_NCU, event->event_object); if (ncu_obj == NULL) { nlog(LOG_ERR, "nwamd_ncu_handle_if_state_event: no object %s", event->event_object); nwamd_event_do_not_send(event); return; } ncu = ncu_obj->nwamd_object_data; evm = event->event_msg; state = ncu_obj->nwamd_object_state; aux_state = ncu_obj->nwamd_object_aux_state; nlog(LOG_DEBUG, "nwamd_ncu_handle_if_state_event: " "if %s, state (%s, %s)", event->event_object, nwam_state_to_string(state), nwam_aux_state_to_string(aux_state)); /* Ensure object is in correct state to handle IF state events */ switch (state) { case NWAM_STATE_OFFLINE_TO_ONLINE: if (aux_state != NWAM_AUX_STATE_IF_WAITING_FOR_ADDR && aux_state != NWAM_AUX_STATE_IF_DHCP_TIMED_OUT) { nlog(LOG_DEBUG, "nwamd_ncu_handle_if_state_event: " "if %s is in invalid aux state %s for IF_STATE " "events", event->event_object, nwam_aux_state_to_string(aux_state)); nwamd_event_do_not_send(event); nwamd_object_release(ncu_obj); return; } break; case NWAM_STATE_ONLINE: /* * We can get addresses from DHCP after we've taken the interface down. * We deal with those below. */ case NWAM_STATE_ONLINE_TO_OFFLINE: case NWAM_STATE_OFFLINE: break; default: nlog(LOG_DEBUG, "nwamd_ncu_handle_if_state_event: " "if %s is in invalid state %s for IF_STATE events", event->event_object, nwam_state_to_string(state)); nwamd_event_do_not_send(event); nwamd_object_release(ncu_obj); return; } if (evm->nwe_data.nwe_if_state.nwe_addr_valid) { struct nwam_event_if_state *if_state; boolean_t stateless_running; char addrstr[INET6_ADDRSTRLEN], ifname[LIFNAMSIZ]; boolean_t v4dhcp_running; boolean_t v6dhcp_running; struct nwamd_if_address *nifa; struct sockaddr *addr; boolean_t static_addr; icfg_if_t intf; icfg_handle_t ifh; nwamd_if_t *u_if; ushort_t family; uint64_t flags = 0; int lifnum; if_state = &evm->nwe_data.nwe_if_state; u_if = &ncu->ncu_node.u_if; family = if_state->nwe_addr.ss_family; addr = (struct sockaddr *)&if_state->nwe_addr; nlog(LOG_DEBUG, "nwamd_ncu_handle_if_state_event: addr %s %s", nwamd_sockaddr_to_str(addr, addrstr, sizeof (addrstr)), evm->nwe_data.nwe_if_state.nwe_addr_added ? "added" : "removed"); /* determine the interface name with lifnum */ if (if_state->nwe_addr_added) { /* figure out the ifname for the address */ if (!ifname_for_addr(addr, ifname, sizeof (ifname))) { nlog(LOG_ERR, "nwamd_ncu_handle_if_state_event:" "could not find ifname for %s", addrstr); nwamd_event_do_not_send(event); goto exit; } } else { /* * Figure out the ifname that had the address that was * removed. The address is already gone from the * interface, so cannot walk the interface list. */ struct nwamd_if_address *n; if ((n = find_static_address(addr, ncu)) == NULL && (n = find_nonstatic_address(ncu, family, B_TRUE)) == NULL && (n = find_nonstatic_address(ncu, family, B_FALSE)) == NULL) { nlog(LOG_ERR, "nwamd_ncu_handle_if_state_event: " "could not find nwamd_if_address for %s", addrstr); nwamd_event_do_not_send(event); goto exit; } (void) strlcpy(ifname, n->ifname, sizeof (ifname)); } nlog(LOG_DEBUG, "nwamd_ncu_handle_if_state_event: " "ifname for %s is %s", addrstr, ifname); /* * Get interface flags using nwe_ifname as it is logical * interface name. */ intf.if_protocol = family; (void) strlcpy(intf.if_name, ifname, sizeof (intf.if_name)); lifnum = lifnum_from_ifname(intf.if_name); if (icfg_open(&ifh, &intf) != ICFG_SUCCESS) { nlog(LOG_ERR, "nwamd_ncu_handle_if_state_event: can't " "find if %s", intf.if_name); nwamd_event_do_not_send(event); goto exit; } if (icfg_get_flags(ifh, &flags) != ICFG_SUCCESS) { nlog(LOG_INFO, "nwamd_ncu_handle_if_state_event: can't " "get flags for %s", icfg_if_name(ifh)); /* * If the interface is unplumbed, icfg_get_flags() * will fail. Don't exit, continue with empty flags. */ if (if_state->nwe_addr_added) { icfg_close(ifh); goto exit; } } if (family == AF_INET && !if_state->nwe_addr_added) { /* * Check for failure due to CR 6745448: if we get a * report that an address has been deleted, then check * for interface up, datalink down, and actual address * non-zero. If that combination is seen, then this is * a DHCP cached lease, and we need to remove it from * the system, or it'll louse up the kernel routes * (which aren't smart enough to avoid dead * interfaces). */ /*LINTED*/ if (((struct sockaddr_in *)addr)->sin_addr.s_addr == INADDR_ANY) { socklen_t slen; struct sockaddr_in s; int pfxlen; if ((flags & IFF_UP) && !(flags & IFF_RUNNING) && icfg_get_addr(ifh, (struct sockaddr *)&s, &slen, &pfxlen, B_FALSE) == ICFG_SUCCESS && s.sin_addr.s_addr != INADDR_ANY) { nlog(LOG_DEBUG, "bug workaround: " "clear out addr %s on %s", inet_ntoa(s.sin_addr), ifname); s.sin_addr.s_addr = INADDR_ANY; (void) icfg_set_addr(ifh, (const struct sockaddr *)&s, slen); } icfg_close(ifh); goto exit; } } /* * Has address really been removed? Sometimes spurious * RTM_DELADDRs are generated, so we need to ensure that * the address is really gone. If IFF_DUPLICATE is set, * we're getting the RTM_DELADDR due to DAD, so don't test * in that case. */ if (!if_state->nwe_addr_added && !(flags & IFF_DUPLICATE)) { struct sockaddr_storage ifaddr; socklen_t len; int plen; len = family == AF_INET ? sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6); if (icfg_get_addr(ifh, (struct sockaddr *)&ifaddr, &len, &plen, B_FALSE) == ICFG_SUCCESS && addresses_match(addr, (struct sockaddr *)&ifaddr)) { nlog(LOG_DEBUG, "nwamd_ncu_handle_if_state_event: " "address %s is not really gone from %s, " "ignoring IF_STATE event", addrstr, intf.if_name); icfg_close(ifh); nwamd_event_do_not_send(event); goto exit; } } icfg_close(ifh); stateless_running = (family == AF_INET6) && ((flags & STATELESS_RUNNING) == STATELESS_RUNNING); v4dhcp_running = (family == AF_INET) && ((flags & DHCP_RUNNING) == DHCP_RUNNING); v6dhcp_running = (family == AF_INET6) && ((flags & DHCP_RUNNING) == DHCP_RUNNING); static_addr = (find_static_address(addr, ncu) != NULL); if (if_state->nwe_addr_added) { /* * Address has been added. * * We need to make sure that we really want to keep * this address. There is a race where we requested an * address but by the time we got here we don't really * want it and need to remove it. * * [Note that since we use DHCP inform on interfaces * with static addresses that they will also have the * DHCP flag set on the interface.] * * Once we decide we want the address adjust the ncu * state accordingly. For example if this address is * enough move online. */ /* Figure out if we want to keep this address. */ if (static_addr) { nifa = find_static_address(addr, ncu); assert(nifa != NULL); nifa->configured = B_TRUE; (void) strlcpy(nifa->ifname, ifname, sizeof (nifa->ifname)); } else if (u_if->nwamd_if_dhcp_requested && v4dhcp_running) { u_if->nwamd_if_dhcp_configured = B_TRUE; nifa = find_nonstatic_address(ncu, family, B_TRUE); assert(nifa != NULL); (void) strlcpy(nifa->ifname, ifname, sizeof (nifa->ifname)); } else if (u_if->nwamd_if_stateful_requested && v6dhcp_running) { u_if->nwamd_if_stateful_configured = B_TRUE; nifa = find_nonstatic_address(ncu, family, B_TRUE); assert(nifa != NULL); (void) strlcpy(nifa->ifname, ifname, sizeof (nifa->ifname)); } else if (u_if->nwamd_if_stateless_requested && stateless_running) { u_if->nwamd_if_stateless_configured = B_TRUE; nifa = find_nonstatic_address(ncu, family, B_FALSE); assert(nifa != NULL); (void) strlcpy(nifa->ifname, ifname, sizeof (nifa->ifname)); } else { /* * This is something we didn't expect. Remove * it by unplumbing the logical interface. */ if (u_if->nwamd_if_dhcp_requested && v4dhcp_running) nwamd_dhcp_release(ncu->ncu_name); if (lifnum == 0) { nwamd_down_interface(ncu->ncu_name, lifnum, family); interface_ncu_down(ncu); } else { nwamd_unplumb_interface(ncu, lifnum, family); } goto exit; } /* * The address looks valid so mark configured and * move online if we either have a v4 address if * v4 is configured or a v6 address if only v6 is * configured. */ (void) update_address_configured_value(addr, ncu, B_TRUE); if (state != NWAM_STATE_ONLINE) interface_ncu_up(ncu); /* * Refresh network/location since we may also have other * DHCP information. We might have to restore it first * in case it is in maintenance. */ nlog(LOG_DEBUG, "nwamd_handle_if_state_event: " "refreshing %s as we may have other " "DHCP information", NET_LOC_FMRI); (void) smf_restore_instance(NET_LOC_FMRI); if (smf_refresh_instance(NET_LOC_FMRI) != 0) { nlog(LOG_ERR, "nwamd_ncu_handle_if_state_" "event: refresh of %s " "failed", NET_LOC_FMRI); } } else if (state == NWAM_STATE_ONLINE || state == NWAM_STATE_OFFLINE_TO_ONLINE) { /* * Address has been removed. Only pay attention to * disappearing addresses if we are online or coming * online. * * Undo whatever configuration is necessary. Note * that this may or may not cause the NCU to go down. * We can get RTM_DELADDRs for duplicate addresses * so deal with this seperately. */ if (static_addr) { (void) update_address_configured_value(addr, ncu, B_FALSE); } else if (family == AF_INET) { u_if->nwamd_if_dhcp_configured = B_FALSE; } else if (family == AF_INET6) { /* * The address is already gone. I'm not sure * how we figure out if this address is * stateful (DHCP) or stateless. When we * are managing IPv6 more explicitly this will * have to be done more carefully. */ u_if->nwamd_if_stateful_configured = B_FALSE; u_if->nwamd_if_stateless_configured = B_FALSE; } if (flags & IFF_DUPLICATE) { nlog(LOG_INFO, "nwamd_ncu_handle_if_state_event: " "duplicate address detected on %s", ncu->ncu_name); nwamd_object_set_state(NWAM_OBJECT_TYPE_NCU, event->event_object, NWAM_STATE_MAINTENANCE, NWAM_AUX_STATE_IF_DUPLICATE_ADDR); } else { interface_ncu_down(ncu); } } } exit: nwamd_object_release(ncu_obj); } void nwamd_ncu_handle_if_action_event(nwamd_event_t event) { nwamd_object_t ncu_obj; nlog(LOG_DEBUG, "if action event %s", event->event_object[0] == '\0' ? "n/a" : event->event_object); ncu_obj = nwamd_object_find(NWAM_OBJECT_TYPE_NCU, event->event_object); if (ncu_obj == NULL) { nlog(LOG_ERR, "nwamd_ncu_handle_if_action_event: no object"); nwamd_event_do_not_send(event); return; } nwamd_object_release(ncu_obj); } /* * This function downs any logical interface and just zeros the address off of * the physical interface (logical interface 0). If you want to unplumb 0 then * you need to call nwamd_unplumb_interface() directly. */ static void nwamd_down_interface(const char *linkname, uint_t lifnum, int family) { uint64_t flags; icfg_if_t intf; icfg_handle_t h; icfg_error_t rc; if (linkname == NULL) { nlog(LOG_ERR, "nwamd_down_interface: linkname null"); return; } (void) nwamd_link_to_ifname(linkname, lifnum, intf.if_name, sizeof (intf.if_name)); intf.if_protocol = family; rc = icfg_open(&h, &intf); if (rc != ICFG_SUCCESS) { nlog(LOG_ERR, "nwamd_down_interface: icfg_open failed for %s: " "%s", intf.if_name, icfg_errmsg(rc)); return; } if (lifnum == 0) { struct sockaddr_in6 addr; (void) memset(&addr, 0, sizeof (addr)); addr.sin6_family = family; if (icfg_set_addr(h, (struct sockaddr *)&addr, family == AF_INET ? sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)) != ICFG_SUCCESS) nlog(LOG_ERR, "nwamd_down_interface couldn't zero " "address on %s", h->ifh_interface.if_name); } else { if (icfg_get_flags(h, &flags) == ICFG_SUCCESS) { if (icfg_set_flags(h, flags & ~IFF_UP) != ICFG_SUCCESS) nlog(LOG_ERR, "nwamd_down_interface: couldn't " "bring %s down", h->ifh_interface.if_name); } else { nlog(LOG_ERR, "nwamd_down_interface: icfg_get_flags " "failed on %s", h->ifh_interface.if_name); } } icfg_close(h); } static void nwamd_plumb_unplumb_interface(nwamd_ncu_t *ncu, uint_t lifnum, int af, boolean_t plumb) { uint64_t flags; icfg_if_t intf; icfg_handle_t h; icfg_error_t rc; nwamd_if_t *u_if; const char *linkname = ncu->ncu_name; if (linkname == NULL) { nlog(LOG_ERR, "nwamd_plumb_unplumb_interface: linkname null"); return; } (void) nwamd_link_to_ifname(linkname, lifnum, intf.if_name, sizeof (intf.if_name)); intf.if_protocol = af; nlog(LOG_DEBUG, "nwamd_plumb_unplumb_interface: %s %s on link %s", plumb ? "plumbing" : "unplumbing", af == AF_INET ? "IPv4" : "IPv6", linkname); /* * Before unplumbing, do a DHCP release if lifnum is 0. Otherwise * dhcpagent can get confused. */ if (!plumb && af == AF_INET && lifnum == 0) nwamd_dhcp_release(ncu->ncu_name); rc = icfg_open(&h, &intf); if (rc != ICFG_SUCCESS) { nlog(LOG_ERR, "nwamd_plumb_unplumb_interface: " "icfg_open failed for %s: %s", intf.if_name, icfg_errmsg(rc)); return; } rc = plumb ? icfg_plumb(h) : icfg_unplumb(h); if (rc != ICFG_SUCCESS) { if ((plumb && rc != ICFG_EXISTS) || (!plumb && rc != ICFG_NO_EXIST)) { nlog(LOG_ERR, "nwamd_plumb_unplumb_interface: " "%s %s failed for %s: %s", plumb ? "plumb" : "unplumb", af == AF_INET ? "IPv4" : "IPv6", intf.if_name, icfg_errmsg(rc)); } } else if (plumb) { if (icfg_get_flags(h, &flags) == ICFG_SUCCESS && (flags & IFF_UP) == 0) { if (icfg_set_flags(h, flags | IFF_UP) != ICFG_SUCCESS) nlog(LOG_ERR, "nwamd_plumb_unplumb_interface: " "couldn't bring %s up", h->ifh_interface.if_name); } else { nlog(LOG_ERR, "nwamd_plumb_unplumb_interface: " "icfg_get_flags failed on %s", h->ifh_interface.if_name); } } u_if = &ncu->ncu_node.u_if; if (!plumb) { nwamd_update_addresses_unconfigured(ncu, af); switch (af) { case AF_INET: u_if->nwamd_if_dhcp_configured = B_FALSE; break; case AF_INET6: u_if->nwamd_if_stateful_configured = B_FALSE; u_if->nwamd_if_stateless_configured = B_FALSE; break; } } icfg_close(h); } void nwamd_plumb_interface(nwamd_ncu_t *ncu, uint_t lifnum, int af) { nwamd_plumb_unplumb_interface(ncu, lifnum, af, B_TRUE); } void nwamd_unplumb_interface(nwamd_ncu_t *ncu, uint_t lifnum, int af) { nwamd_plumb_unplumb_interface(ncu, lifnum, af, B_FALSE); } static void * start_dhcp_thread(void *arg) { struct nwamd_dhcp_thread_arg *thread_arg; dhcp_ipc_reply_t *reply = NULL; dhcp_ipc_request_t *request; dhcp_ipc_type_t type; int timeout; char *name; int rc, retries = 0; thread_arg = (struct nwamd_dhcp_thread_arg *)arg; timeout = thread_arg->timeout; name = thread_arg->name; type = thread_arg->type; /* Try starting agent, though it may already be there */ nwamd_to_root(); rc = dhcp_start_agent(DHCP_IPC_MAX_WAIT); nwamd_from_root(); if (rc == -1) { nlog(LOG_DEBUG, "Unable to start %s", DHCP_AGENT_PATH); goto failed; } retry: /* Now allocate and send the request */ request = dhcp_ipc_alloc_request(type, name, NULL, 0, DHCP_TYPE_NONE); if (request == NULL) { nlog(LOG_DEBUG, "start_dhcp: dhcp_ipc_alloc_request : %s", strerror(errno)); goto failed; } rc = dhcp_ipc_make_request(request, &reply, timeout); free(request); if (rc != 0) { nlog(LOG_DEBUG, "start_dhcp %s: %s", name, dhcp_ipc_strerror(rc)); goto failed; } rc = reply->return_code; if (rc != 0) { if (rc == DHCP_IPC_E_TIMEOUT && timeout == 0) { goto failed; } /* * DHCP timed out: change state for this NCU and enqueue * event to check NCU priority-groups. Only care for * DHCP requests (not informs). */ if (rc == DHCP_IPC_E_TIMEOUT && type != DHCP_INFORM) { char *object_name; nlog(LOG_INFO, "start_dhcp: DHCP timed out for %s", name); if (nwam_ncu_name_to_typed_name(name, NWAM_NCU_TYPE_INTERFACE, &object_name) != NWAM_SUCCESS) { nlog(LOG_ERR, "start_dhcp: " "nwam_ncu_name_to_typed_name failed"); goto failed; } nwamd_object_set_state(NWAM_OBJECT_TYPE_NCU, object_name, NWAM_STATE_OFFLINE_TO_ONLINE, NWAM_AUX_STATE_IF_DHCP_TIMED_OUT); nwamd_create_ncu_check_event(0); free(object_name); goto failed; } else if (rc == DHCP_IPC_E_RUNNING) { /* * DHCP is already running. Check if IP address is * already configured on the interface. */ icfg_handle_t h; icfg_if_t intf; struct sockaddr_in sin; socklen_t alen = sizeof (struct sockaddr_in); int plen, index; uint64_t flags; nwamd_event_t ip_event; nlog(LOG_ERR, "start_dhcp: DHCP already running on %s", name); (void) strlcpy(intf.if_name, name, sizeof (intf.if_name)); intf.if_protocol = AF_INET; if (icfg_open(&h, &intf) != ICFG_SUCCESS) { nlog(LOG_ERR, "start_dhcp: " "icfg_open failed on %s", name); goto failed; } /* Get address */ if (icfg_get_addr(h, (struct sockaddr *)&sin, &alen, &plen, B_FALSE) != ICFG_SUCCESS) { nlog(LOG_ERR, "start_dhcp: " "icfg_get_addr failed on %s: %s", name, strerror(errno)); goto bail; } /* Check if 0.0.0.0 */ if (sin.sin_addr.s_addr == INADDR_ANY) { nlog(LOG_ERR, "start_dhcp: empty address on %s", name); goto bail; } /* valid address exists, get the flags, index of intf */ if (icfg_get_flags(h, &flags) != ICFG_SUCCESS) { nlog(LOG_ERR, "start_dhcp: " "icfg_get_flags failed on %s", name); goto bail; } if (icfg_get_index(h, &index) != ICFG_SUCCESS) { nlog(LOG_ERR, "start_dhcp: " "icfg_get_index failed on %s", name); goto bail; } /* synthesize an IF_STATE event with the intf's flags */ ip_event = nwamd_event_init_if_state(name, flags, B_TRUE, index, (struct sockaddr *)&sin); if (ip_event != NULL) nwamd_event_enqueue(ip_event); bail: icfg_close(h); goto failed; } else if ((rc == DHCP_IPC_E_SOCKET || rc == DHCP_IPC_E_INVIF) && retries++ < NWAMD_DHCP_RETRIES) { /* * Retry DHCP request as we may have been unplumbing * as part of the configuration phase. */ nlog(LOG_ERR, "start_dhcp %s: %s; will retry in %d sec", name, dhcp_ipc_strerror(rc), rc == DHCP_IPC_E_INVIF ? NWAMD_DHCP_RETRY_WAIT_TIME : 0); if (rc == DHCP_IPC_E_INVIF) (void) sleep(NWAMD_DHCP_RETRY_WAIT_TIME); goto retry; } else { nlog(LOG_ERR, "start_dhcp %s: %s", name, dhcp_ipc_strerror(rc)); goto failed; } } /* If status was the command, then output the results */ if (DHCP_IPC_CMD(type) == DHCP_STATUS) { nlog(LOG_DEBUG, "%s", dhcp_status_hdr_string()); nlog(LOG_DEBUG, "%s", dhcp_status_reply_to_string(reply)); } failed: free(reply); if (arg != NULL) { free(name); free(arg); } return (NULL); } void nwamd_start_dhcp(nwamd_ncu_t *ncu) { struct nwamd_dhcp_thread_arg *arg; char *name = NULL; pthread_attr_t attr; nlog(LOG_DEBUG, "nwamd_start_dhcp: starting DHCP for %s %d", ncu->ncu_name, ncu->ncu_type); arg = malloc(sizeof (*arg)); if (arg == NULL) { nlog(LOG_ERR, "nwamd_start_dhcp: error allocating memory " "for dhcp request"); free(name); return; } arg->name = strdup(ncu->ncu_name); arg->type = DHCP_START; arg->timeout = ncu_wait_time; (void) pthread_attr_init(&attr); (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); if (pthread_create(NULL, &attr, start_dhcp_thread, arg) == -1) { nlog(LOG_ERR, "nwamd_start_dhcp: cannot start dhcp thread"); free(name); free(arg); (void) pthread_attr_destroy(&attr); return; } (void) pthread_attr_destroy(&attr); }