diff options
Diffstat (limited to 'netwerk/sctp/src/netinet/sctp_bsd_addr.c')
| -rw-r--r-- | netwerk/sctp/src/netinet/sctp_bsd_addr.c | 982 |
1 files changed, 982 insertions, 0 deletions
diff --git a/netwerk/sctp/src/netinet/sctp_bsd_addr.c b/netwerk/sctp/src/netinet/sctp_bsd_addr.c new file mode 100644 index 0000000000..7b40fc4084 --- /dev/null +++ b/netwerk/sctp/src/netinet/sctp_bsd_addr.c @@ -0,0 +1,982 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. + * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. + * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * a) Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * b) Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the distribution. + * + * c) Neither the name of Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ + +#if defined(__FreeBSD__) && !defined(__Userspace__) +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#endif + +#include <netinet/sctp_os.h> +#include <netinet/sctp_var.h> +#include <netinet/sctp_pcb.h> +#include <netinet/sctp_header.h> +#include <netinet/sctputil.h> +#include <netinet/sctp_output.h> +#include <netinet/sctp_bsd_addr.h> +#include <netinet/sctp_uio.h> +#include <netinet/sctputil.h> +#include <netinet/sctp_timer.h> +#include <netinet/sctp_asconf.h> +#include <netinet/sctp_sysctl.h> +#include <netinet/sctp_indata.h> +#if defined(__FreeBSD__) && !defined(__Userspace__) +#include <sys/unistd.h> +#endif + +/* Declare all of our malloc named types */ +MALLOC_DEFINE(SCTP_M_MAP, "sctp_map", "sctp asoc map descriptor"); +MALLOC_DEFINE(SCTP_M_STRMI, "sctp_stri", "sctp stream in array"); +MALLOC_DEFINE(SCTP_M_STRMO, "sctp_stro", "sctp stream out array"); +MALLOC_DEFINE(SCTP_M_ASC_ADDR, "sctp_aadr", "sctp asconf address"); +MALLOC_DEFINE(SCTP_M_ASC_IT, "sctp_a_it", "sctp asconf iterator"); +MALLOC_DEFINE(SCTP_M_AUTH_CL, "sctp_atcl", "sctp auth chunklist"); +MALLOC_DEFINE(SCTP_M_AUTH_KY, "sctp_atky", "sctp auth key"); +MALLOC_DEFINE(SCTP_M_AUTH_HL, "sctp_athm", "sctp auth hmac list"); +MALLOC_DEFINE(SCTP_M_AUTH_IF, "sctp_athi", "sctp auth info"); +MALLOC_DEFINE(SCTP_M_STRESET, "sctp_stre", "sctp stream reset"); +MALLOC_DEFINE(SCTP_M_CMSG, "sctp_cmsg", "sctp CMSG buffer"); +MALLOC_DEFINE(SCTP_M_COPYAL, "sctp_cpal", "sctp copy all"); +MALLOC_DEFINE(SCTP_M_VRF, "sctp_vrf", "sctp vrf struct"); +MALLOC_DEFINE(SCTP_M_IFA, "sctp_ifa", "sctp ifa struct"); +MALLOC_DEFINE(SCTP_M_IFN, "sctp_ifn", "sctp ifn struct"); +MALLOC_DEFINE(SCTP_M_TIMW, "sctp_timw", "sctp time block"); +MALLOC_DEFINE(SCTP_M_MVRF, "sctp_mvrf", "sctp mvrf pcb list"); +MALLOC_DEFINE(SCTP_M_ITER, "sctp_iter", "sctp iterator control"); +MALLOC_DEFINE(SCTP_M_SOCKOPT, "sctp_socko", "sctp socket option"); +MALLOC_DEFINE(SCTP_M_MCORE, "sctp_mcore", "sctp mcore queue"); + +/* Global NON-VNET structure that controls the iterator */ +struct iterator_control sctp_it_ctl; +#if !(defined(__FreeBSD__) && !defined(__Userspace__)) + +static void +sctp_cleanup_itqueue(void) +{ + struct sctp_iterator *it, *nit; + + TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) { + if (it->function_atend != NULL) { + (*it->function_atend) (it->pointer, it->val); + } + TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); + SCTP_FREE(it, SCTP_M_ITER); + } +} +#endif +#if defined(__Userspace__) +/*__Userspace__ TODO if we use thread based iterator + * then the implementation of wakeup will need to change. + * Currently we are using timeo_cond for ident so_timeo + * but that is not sufficient if we need to use another ident + * like wakeup(&sctppcbinfo.iterator_running); + */ +#endif + +void +sctp_wakeup_iterator(void) +{ +#if defined(SCTP_PROCESS_LEVEL_LOCKS) +#if defined(_WIN32) + WakeAllConditionVariable(&sctp_it_ctl.iterator_wakeup); +#else + pthread_cond_broadcast(&sctp_it_ctl.iterator_wakeup); +#endif +#else + wakeup(&sctp_it_ctl.iterator_running); +#endif +} + +#if defined(__Userspace__) +static void * +#else +static void +#endif +sctp_iterator_thread(void *v SCTP_UNUSED) +{ +#if defined(__Userspace__) + sctp_userspace_set_threadname("SCTP iterator"); +#endif + SCTP_IPI_ITERATOR_WQ_LOCK(); + /* In FreeBSD this thread never terminates. */ +#if defined(__FreeBSD__) && !defined(__Userspace__) + for (;;) { +#else + while ((sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) == 0) { +#endif +#if !defined(__Userspace__) + msleep(&sctp_it_ctl.iterator_running, +#if defined(__FreeBSD__) + &sctp_it_ctl.ipi_iterator_wq_mtx, +#elif defined(__APPLE__) + sctp_it_ctl.ipi_iterator_wq_mtx, +#endif + 0, "waiting_for_work", 0); +#else +#if defined(_WIN32) + SleepConditionVariableCS(&sctp_it_ctl.iterator_wakeup, &sctp_it_ctl.ipi_iterator_wq_mtx, INFINITE); +#else + pthread_cond_wait(&sctp_it_ctl.iterator_wakeup, &sctp_it_ctl.ipi_iterator_wq_mtx); +#endif +#endif +#if !(defined(__FreeBSD__) && !defined(__Userspace__)) + if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) { + break; + } +#endif + sctp_iterator_worker(); + } +#if !(defined(__FreeBSD__) && !defined(__Userspace__)) + /* Now this thread needs to be terminated */ + sctp_cleanup_itqueue(); + sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_EXITED; + SCTP_IPI_ITERATOR_WQ_UNLOCK(); +#if defined(__Userspace__) + sctp_wakeup_iterator(); + return (NULL); +#else + wakeup(&sctp_it_ctl.iterator_flags); + thread_terminate(current_thread()); +#ifdef INVARIANTS + panic("Hmm. thread_terminate() continues..."); +#endif +#endif +#endif +} + +void +sctp_startup_iterator(void) +{ + if (sctp_it_ctl.thread_proc) { + /* You only get one */ + return; + } + /* Initialize global locks here, thus only once. */ + SCTP_ITERATOR_LOCK_INIT(); + SCTP_IPI_ITERATOR_WQ_INIT(); + TAILQ_INIT(&sctp_it_ctl.iteratorhead); +#if defined(__Userspace__) + if (sctp_userspace_thread_create(&sctp_it_ctl.thread_proc, &sctp_iterator_thread)) { + SCTP_PRINTF("ERROR: Creating sctp_iterator_thread failed.\n"); + } else { + SCTP_BASE_VAR(iterator_thread_started) = 1; + } +#elif defined(__FreeBSD__) + kproc_create(sctp_iterator_thread, + (void *)NULL, + &sctp_it_ctl.thread_proc, + 0, + SCTP_KTHREAD_PAGES, + SCTP_KTRHEAD_NAME); +#elif defined(__APPLE__) + kernel_thread_start((thread_continue_t)sctp_iterator_thread, NULL, &sctp_it_ctl.thread_proc); +#endif +} + +#ifdef INET6 + +#if defined(__Userspace__) +/* __Userspace__ TODO. struct in6_ifaddr is defined in sys/netinet6/in6_var.h + ip6_use_deprecated is defined as int ip6_use_deprecated = 1; in /src/sys/netinet6/in6_proto.c + */ +void +sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa) +{ + return; /* stub */ +} +#else +void +sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa) +{ + struct in6_ifaddr *ifa6; + + ifa6 = (struct in6_ifaddr *)ifa->ifa; + ifa->flags = ifa6->ia6_flags; + if (!MODULE_GLOBAL(ip6_use_deprecated)) { + if (ifa->flags & + IN6_IFF_DEPRECATED) { + ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE; + } else { + ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE; + } + } else { + ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE; + } + if (ifa->flags & + (IN6_IFF_DETACHED | + IN6_IFF_ANYCAST | + IN6_IFF_NOTREADY)) { + ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE; + } else { + ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE; + } +} +#endif /* __Userspace__ */ +#endif /* INET6 */ + +#if !defined(__Userspace__) +static uint32_t +sctp_is_desired_interface_type(struct ifnet *ifn) +{ + int result; + + /* check the interface type to see if it's one we care about */ +#if defined(__APPLE__) && !defined(__Userspace__) + switch(ifnet_type(ifn)) { +#else + switch (ifn->if_type) { +#endif + case IFT_ETHER: + case IFT_ISO88023: + case IFT_ISO88024: + case IFT_ISO88025: + case IFT_ISO88026: + case IFT_STARLAN: + case IFT_P10: + case IFT_P80: + case IFT_HY: + case IFT_FDDI: + case IFT_XETHER: + case IFT_ISDNBASIC: + case IFT_ISDNPRIMARY: + case IFT_PTPSERIAL: + case IFT_OTHER: + case IFT_PPP: + case IFT_LOOP: + case IFT_SLIP: + case IFT_GIF: + case IFT_L2VLAN: + case IFT_STF: +#if !(defined(__APPLE__) && !defined(__Userspace__)) + case IFT_IP: + case IFT_IPOVERCDLC: + case IFT_IPOVERCLAW: + case IFT_PROPVIRTUAL: /* NetGraph Virtual too */ + case IFT_VIRTUALIPADDRESS: +#endif + result = 1; + break; + default: + result = 0; + } + + return (result); +} +#endif +#if defined(__APPLE__) && !defined(__Userspace__) + +int +sctp_is_vmware_interface(struct ifnet *ifn) +{ + return (strncmp(ifnet_name(ifn), "vmnet", 5) == 0); +} + +#endif + +#if defined(_WIN32) && defined(__Userspace__) +#define SCTP_BSD_FREE(x) HeapFree(GetProcessHeap(), 0, (x)) +static void +sctp_init_ifns_for_vrf(int vrfid) +{ +#if defined(INET) || defined(INET6) + struct sctp_ifa *sctp_ifa; + DWORD Err, AdapterAddrsSize; + PIP_ADAPTER_ADDRESSES pAdapterAddrs, pAdapt; + PIP_ADAPTER_UNICAST_ADDRESS pUnicast; +#endif + +#ifdef INET + AdapterAddrsSize = 0; + + if ((Err = GetAdaptersAddresses(AF_INET, 0, NULL, NULL, &AdapterAddrsSize)) != 0) { + if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) { + SCTP_PRINTF("GetAdaptersV4Addresses() sizing failed with error code %d\n", Err); + SCTP_PRINTF("err = %d; AdapterAddrsSize = %d\n", Err, AdapterAddrsSize); + return; + } + } + + /* Allocate memory from sizing information */ + if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) { + SCTP_PRINTF("Memory allocation error!\n"); + return; + } + /* Get actual adapter information */ + if ((Err = GetAdaptersAddresses(AF_INET, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) { + SCTP_PRINTF("GetAdaptersV4Addresses() failed with error code %d\n", Err); + SCTP_BSD_FREE(pAdapterAddrs); + return; + } + /* Enumerate through each returned adapter and save its information */ + for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) { + if (pAdapt->IfType == IF_TYPE_IEEE80211 || pAdapt->IfType == IF_TYPE_ETHERNET_CSMACD) { + for (pUnicast = pAdapt->FirstUnicastAddress; pUnicast; pUnicast = pUnicast->Next) { + if (IN4_ISLINKLOCAL_ADDRESS(&(((struct sockaddr_in *)(pUnicast->Address.lpSockaddr))->sin_addr))) { + continue; + } + sctp_ifa = sctp_add_addr_to_vrf(0, + NULL, + pAdapt->IfIndex, + (pAdapt->IfType == IF_TYPE_IEEE80211)?MIB_IF_TYPE_ETHERNET:pAdapt->IfType, + pAdapt->AdapterName, + NULL, + pUnicast->Address.lpSockaddr, + pAdapt->Flags, + 0); + if (sctp_ifa) { + sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; + } + } + } + } + SCTP_BSD_FREE(pAdapterAddrs); +#endif +#ifdef INET6 + AdapterAddrsSize = 0; + + if ((Err = GetAdaptersAddresses(AF_INET6, 0, NULL, NULL, &AdapterAddrsSize)) != 0) { + if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) { + SCTP_PRINTF("GetAdaptersV6Addresses() sizing failed with error code %d\n", Err); + SCTP_PRINTF("err = %d; AdapterAddrsSize = %d\n", Err, AdapterAddrsSize); + return; + } + } + /* Allocate memory from sizing information */ + if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) { + SCTP_PRINTF("Memory allocation error!\n"); + return; + } + /* Get actual adapter information */ + if ((Err = GetAdaptersAddresses(AF_INET6, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) { + SCTP_PRINTF("GetAdaptersV6Addresses() failed with error code %d\n", Err); + SCTP_BSD_FREE(pAdapterAddrs); + return; + } + /* Enumerate through each returned adapter and save its information */ + for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) { + if (pAdapt->IfType == IF_TYPE_IEEE80211 || pAdapt->IfType == IF_TYPE_ETHERNET_CSMACD) { + for (pUnicast = pAdapt->FirstUnicastAddress; pUnicast; pUnicast = pUnicast->Next) { + sctp_ifa = sctp_add_addr_to_vrf(0, + NULL, + pAdapt->Ipv6IfIndex, + (pAdapt->IfType == IF_TYPE_IEEE80211)?MIB_IF_TYPE_ETHERNET:pAdapt->IfType, + pAdapt->AdapterName, + NULL, + pUnicast->Address.lpSockaddr, + pAdapt->Flags, + 0); + if (sctp_ifa) { + sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; + } + } + } + } + SCTP_BSD_FREE(pAdapterAddrs); +#endif +} +#elif defined(__Userspace__) +static void +sctp_init_ifns_for_vrf(int vrfid) +{ +#if defined(INET) || defined(INET6) + int rc; + struct ifaddrs *ifa, *ifas; + struct sctp_ifa *sctp_ifa; + uint32_t ifa_flags; + + rc = getifaddrs(&ifas); + if (rc != 0) { + return; + } + for (ifa = ifas; ifa; ifa = ifa->ifa_next) { + if (ifa->ifa_addr == NULL) { + continue; + } +#if !defined(INET) + if (ifa->ifa_addr->sa_family != AF_INET6) { + /* non inet6 skip */ + continue; + } +#elif !defined(INET6) + if (ifa->ifa_addr->sa_family != AF_INET) { + /* non inet skip */ + continue; + } +#else + if ((ifa->ifa_addr->sa_family != AF_INET) && (ifa->ifa_addr->sa_family != AF_INET6)) { + /* non inet/inet6 skip */ + continue; + } +#endif +#if defined(INET6) + if ((ifa->ifa_addr->sa_family == AF_INET6) && + IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) { + /* skip unspecified addresses */ + continue; + } +#endif +#if defined(INET) + if (ifa->ifa_addr->sa_family == AF_INET && + ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) { + continue; + } +#endif + ifa_flags = 0; + sctp_ifa = sctp_add_addr_to_vrf(vrfid, + NULL, + if_nametoindex(ifa->ifa_name), + 0, + ifa->ifa_name, + NULL, + ifa->ifa_addr, + ifa_flags, + 0); + if (sctp_ifa) { + sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; + } + } + freeifaddrs(ifas); +#endif +} +#endif +#if defined(__APPLE__) && !defined(__Userspace__) +static void +sctp_init_ifns_for_vrf(int vrfid) +{ + /* Here we must apply ANY locks needed by the + * IFN we access and also make sure we lock + * any IFA that exists as we float through the + * list of IFA's + */ + struct ifnet **ifnetlist; + uint32_t i, j, count; + char name[SCTP_IFNAMSIZ]; + struct ifnet *ifn; + struct ifaddr **ifaddrlist; + struct ifaddr *ifa; + struct in6_ifaddr *ifa6; + struct sctp_ifa *sctp_ifa; + uint32_t ifa_flags; + + if (ifnet_list_get(IFNET_FAMILY_ANY, &ifnetlist, &count) != 0) { + return; + } + for (i = 0; i < count; i++) { + ifn = ifnetlist[i]; + if (SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) && sctp_is_vmware_interface(ifn)) { + continue; + } + if (sctp_is_desired_interface_type(ifn) == 0) { + /* non desired type */ + continue; + } + if (ifnet_get_address_list(ifn, &ifaddrlist) != 0) { + continue; + } + for (j = 0; ifaddrlist[j] != NULL; j++) { + ifa = ifaddrlist[j]; + if (ifa->ifa_addr == NULL) { + continue; + } + if ((ifa->ifa_addr->sa_family != AF_INET) && (ifa->ifa_addr->sa_family != AF_INET6)) { + /* non inet/inet6 skip */ + continue; + } + if (ifa->ifa_addr->sa_family == AF_INET6) { + if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) { + /* skip unspecified addresses */ + continue; + } + } else { + if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == INADDR_ANY) { + continue; + } + } + if (ifa->ifa_addr->sa_family == AF_INET6) { + ifa6 = (struct in6_ifaddr *)ifa; + ifa_flags = ifa6->ia6_flags; + } else { + ifa_flags = 0; + } + SCTP_SNPRINTF(name, SCTP_IFNAMSIZ, "%s%d", ifnet_name(ifn), ifnet_unit(ifn)); + sctp_ifa = sctp_add_addr_to_vrf(vrfid, + (void *)ifn, /* XXX */ + ifnet_index(ifn), + ifnet_type(ifn), + name, + (void *)ifa, /* XXX */ + ifa->ifa_addr, + ifa_flags, + 0); + if (sctp_ifa) { + sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; + } + } + ifnet_free_address_list(ifaddrlist); + } + ifnet_list_free(ifnetlist); +} +#endif +#if defined(__FreeBSD__) && !defined(__Userspace__) +static void +sctp_init_ifns_for_vrf(int vrfid) +{ + /* Here we must apply ANY locks needed by the + * IFN we access and also make sure we lock + * any IFA that exists as we float through the + * list of IFA's + */ + struct epoch_tracker et; + struct ifnet *ifn; + struct ifaddr *ifa; + struct sctp_ifa *sctp_ifa; + uint32_t ifa_flags; +#ifdef INET6 + struct in6_ifaddr *ifa6; +#endif + + IFNET_RLOCK(); + NET_EPOCH_ENTER(et); + CK_STAILQ_FOREACH(ifn, &MODULE_GLOBAL(ifnet), if_link) { + if (sctp_is_desired_interface_type(ifn) == 0) { + /* non desired type */ + continue; + } + CK_STAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link) { + if (ifa->ifa_addr == NULL) { + continue; + } + switch (ifa->ifa_addr->sa_family) { +#ifdef INET + case AF_INET: + if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) { + continue; + } + break; +#endif +#ifdef INET6 + case AF_INET6: + if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) { + /* skip unspecified addresses */ + continue; + } + break; +#endif + default: + continue; + } + switch (ifa->ifa_addr->sa_family) { +#ifdef INET + case AF_INET: + ifa_flags = 0; + break; +#endif +#ifdef INET6 + case AF_INET6: + ifa6 = (struct in6_ifaddr *)ifa; + ifa_flags = ifa6->ia6_flags; + break; +#endif + default: + ifa_flags = 0; + break; + } + sctp_ifa = sctp_add_addr_to_vrf(vrfid, + (void *)ifn, + ifn->if_index, + ifn->if_type, + ifn->if_xname, + (void *)ifa, + ifa->ifa_addr, + ifa_flags, + 0); + if (sctp_ifa) { + sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; + } + } + } + NET_EPOCH_EXIT(et); + IFNET_RUNLOCK(); +} +#endif + +void +sctp_init_vrf_list(int vrfid) +{ + if (vrfid > SCTP_MAX_VRF_ID) + /* can't do that */ + return; + + /* Don't care about return here */ + (void)sctp_allocate_vrf(vrfid); + + /* Now we need to build all the ifn's + * for this vrf and there addresses + */ + sctp_init_ifns_for_vrf(vrfid); +} + +void +sctp_addr_change(struct ifaddr *ifa, int cmd) +{ +#if defined(__Userspace__) + return; +#else + uint32_t ifa_flags = 0; + + if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { + return; + } + /* BSD only has one VRF, if this changes + * we will need to hook in the right + * things here to get the id to pass to + * the address management routine. + */ + if (SCTP_BASE_VAR(first_time) == 0) { + /* Special test to see if my ::1 will showup with this */ + SCTP_BASE_VAR(first_time) = 1; + sctp_init_ifns_for_vrf(SCTP_DEFAULT_VRFID); + } + + if ((cmd != RTM_ADD) && (cmd != RTM_DELETE)) { + /* don't know what to do with this */ + return; + } + + if (ifa->ifa_addr == NULL) { + return; + } + if (sctp_is_desired_interface_type(ifa->ifa_ifp) == 0) { + /* non desired type */ + return; + } + switch (ifa->ifa_addr->sa_family) { +#ifdef INET + case AF_INET: + if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) { + return; + } + break; +#endif +#ifdef INET6 + case AF_INET6: + ifa_flags = ((struct in6_ifaddr *)ifa)->ia6_flags; + if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) { + /* skip unspecified addresses */ + return; + } + break; +#endif + default: + /* non inet/inet6 skip */ + return; + } + if (cmd == RTM_ADD) { + (void)sctp_add_addr_to_vrf(SCTP_DEFAULT_VRFID, (void *)ifa->ifa_ifp, +#if defined(__APPLE__) && !defined(__Userspace__) + ifnet_index(ifa->ifa_ifp), ifnet_type(ifa->ifa_ifp), ifnet_name(ifa->ifa_ifp), +#else + ifa->ifa_ifp->if_index, ifa->ifa_ifp->if_type, ifa->ifa_ifp->if_xname, +#endif + (void *)ifa, ifa->ifa_addr, ifa_flags, 1); + } else { + sctp_del_addr_from_vrf(SCTP_DEFAULT_VRFID, ifa->ifa_addr, +#if defined(__APPLE__) && !defined(__Userspace__) + ifnet_index(ifa->ifa_ifp), + ifnet_name(ifa->ifa_ifp)); +#else + ifa->ifa_ifp->if_index, + ifa->ifa_ifp->if_xname); +#endif + + /* We don't bump refcount here so when it completes + * the final delete will happen. + */ + } +#endif +} + +#if defined(__FreeBSD__) && !defined(__Userspace__) +void +sctp_addr_change_event_handler(void *arg __unused, struct ifaddr *ifa, int cmd) { + sctp_addr_change(ifa, cmd); +} +#endif +#if defined(__APPLE__) && !defined(__Userspace__) +void +sctp_add_or_del_interfaces(int (*pred)(struct ifnet *), int add) +{ + struct ifnet **ifnetlist; + struct ifaddr **ifaddrlist; + uint32_t i, j, count; + + if (ifnet_list_get(IFNET_FAMILY_ANY, &ifnetlist, &count) != 0) { + return; + } + for (i = 0; i < count; i++) { + if (!(*pred)(ifnetlist[i])) { + continue; + } + if (ifnet_get_address_list(ifnetlist[i], &ifaddrlist) != 0) { + continue; + } + for (j = 0; ifaddrlist[j] != NULL; j++) { + sctp_addr_change(ifaddrlist[j], add ? RTM_ADD : RTM_DELETE); + } + ifnet_free_address_list(ifaddrlist); + } + ifnet_list_free(ifnetlist); + return; +} +#endif + +struct mbuf * +sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header, + int how, int allonebuf, int type) +{ + struct mbuf *m = NULL; +#if defined(__FreeBSD__) || defined(__Userspace__) +#if defined(__Userspace__) + m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0, allonebuf); +#else + m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0); +#endif + if (m == NULL) { + /* bad, no memory */ + return (m); + } +#if !defined(__Userspace__) + if (allonebuf) { + if (SCTP_BUF_SIZE(m) < space_needed) { + m_freem(m); + return (NULL); + } + KASSERT(SCTP_BUF_NEXT(m) == NULL, ("%s: no chain allowed", __func__)); + } +#endif +#ifdef SCTP_MBUF_LOGGING + if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { + sctp_log_mb(m, SCTP_MBUF_IALLOC); + } +#endif +#else + int mbuf_threshold; + unsigned int size; + + if (want_header) { + MGETHDR(m, how, type); + size = MHLEN; + } else { + MGET(m, how, type); + size = MLEN; + } + if (m == NULL) { + return (NULL); + } + if (allonebuf == 0) { + mbuf_threshold = SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count); + } else { + mbuf_threshold = 1; + } + + if (space_needed > (unsigned int)(((mbuf_threshold - 1) * MLEN) + MHLEN)) { + MCLGET(m, how); + if (m == NULL) { + return (NULL); + } + if (SCTP_BUF_IS_EXTENDED(m) == 0) { + sctp_m_freem(m); + return (NULL); + } + size = SCTP_BUF_EXTEND_SIZE(m); + } + if (allonebuf != 0 && size < space_needed) { + m_freem(m); + return (NULL); + } + SCTP_BUF_LEN(m) = 0; + SCTP_BUF_NEXT(m) = SCTP_BUF_NEXT_PKT(m) = NULL; +#ifdef SCTP_MBUF_LOGGING + if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { + sctp_log_mb(m, SCTP_MBUF_IALLOC); + } +#endif +#endif + return (m); +} + +#ifdef SCTP_PACKET_LOGGING +void +sctp_packet_log(struct mbuf *m) +{ + int *lenat, thisone; + void *copyto; + uint32_t *tick_tock; + int length; + int total_len; + int grabbed_lock = 0; + int value, newval, thisend, thisbegin; + /* + * Buffer layout. + * -sizeof this entry (total_len) + * -previous end (value) + * -ticks of log (ticks) + * o -ip packet + * o -as logged + * - where this started (thisbegin) + * x <--end points here + */ + length = SCTP_HEADER_LEN(m); + total_len = SCTP_SIZE32((length + (4 * sizeof(int)))); + /* Log a packet to the buffer. */ + if (total_len> SCTP_PACKET_LOG_SIZE) { + /* Can't log this packet I have not a buffer big enough */ + return; + } + if (length < (int)(SCTP_MIN_V4_OVERHEAD + sizeof(struct sctp_cookie_ack_chunk))) { + return; + } + atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), 1); + try_again: + if (SCTP_BASE_VAR(packet_log_writers) > SCTP_PKTLOG_WRITERS_NEED_LOCK) { + SCTP_IP_PKTLOG_LOCK(); + grabbed_lock = 1; + again_locked: + value = SCTP_BASE_VAR(packet_log_end); + newval = SCTP_BASE_VAR(packet_log_end) + total_len; + if (newval >= SCTP_PACKET_LOG_SIZE) { + /* we wrapped */ + thisbegin = 0; + thisend = total_len; + } else { + thisbegin = SCTP_BASE_VAR(packet_log_end); + thisend = newval; + } + if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) { + goto again_locked; + } + } else { + value = SCTP_BASE_VAR(packet_log_end); + newval = SCTP_BASE_VAR(packet_log_end) + total_len; + if (newval >= SCTP_PACKET_LOG_SIZE) { + /* we wrapped */ + thisbegin = 0; + thisend = total_len; + } else { + thisbegin = SCTP_BASE_VAR(packet_log_end); + thisend = newval; + } + if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) { + goto try_again; + } + } + /* Sanity check */ + if (thisend >= SCTP_PACKET_LOG_SIZE) { + SCTP_PRINTF("Insanity stops a log thisbegin:%d thisend:%d writers:%d lock:%d end:%d\n", + thisbegin, + thisend, + SCTP_BASE_VAR(packet_log_writers), + grabbed_lock, + SCTP_BASE_VAR(packet_log_end)); + SCTP_BASE_VAR(packet_log_end) = 0; + goto no_log; + } + lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisbegin]; + *lenat = total_len; + lenat++; + *lenat = value; + lenat++; + tick_tock = (uint32_t *)lenat; + lenat++; + *tick_tock = sctp_get_tick_count(); + copyto = (void *)lenat; + thisone = thisend - sizeof(int); + lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisone]; + *lenat = thisbegin; + if (grabbed_lock) { + SCTP_IP_PKTLOG_UNLOCK(); + grabbed_lock = 0; + } + m_copydata(m, 0, length, (caddr_t)copyto); + no_log: + if (grabbed_lock) { + SCTP_IP_PKTLOG_UNLOCK(); + } + atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers), 1); +} + +int +sctp_copy_out_packet_log(uint8_t *target, int length) +{ + /* We wind through the packet log starting at + * start copying up to length bytes out. + * We return the number of bytes copied. + */ + int this_copy; + int *lenat; + int did_delay = 0; + + if (length < (int)(2 * sizeof(int))) { + /* not enough room */ + return (0); + } + if (SCTP_PKTLOG_WRITERS_NEED_LOCK) { + atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), SCTP_PKTLOG_WRITERS_NEED_LOCK); + again: + if ((did_delay == 0) && (SCTP_BASE_VAR(packet_log_writers) != SCTP_PKTLOG_WRITERS_NEED_LOCK)) { + /* we delay here for just a moment hoping the writer(s) that were + * present when we entered will have left and we only have + * locking ones that will contend with us for the lock. This + * does not assure 100% access, but its good enough for + * a logging facility like this. + */ + did_delay = 1; + DELAY(10); + goto again; + } + } + SCTP_IP_PKTLOG_LOCK(); + lenat = (int *)target; + *lenat = SCTP_BASE_VAR(packet_log_end); + lenat++; + this_copy = min((length - sizeof(int)), SCTP_PACKET_LOG_SIZE); + memcpy((void *)lenat, (void *)SCTP_BASE_VAR(packet_log_buffer), this_copy); + if (SCTP_PKTLOG_WRITERS_NEED_LOCK) { + atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers), + SCTP_PKTLOG_WRITERS_NEED_LOCK); + } + SCTP_IP_PKTLOG_UNLOCK(); + return (this_copy + sizeof(int)); +} + +#endif |