Enable SCTP in libjingle.

third_party/usrsctp/overrides/usrsctplib/netinet/sctp_os_userspace.h

+/*-
+ * Copyright (c) 2006-2007, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved.
+ * Copyright (c) 2008-2011, by Brad Penoff. 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.
+ */
+
+#ifndef __sctp_os_userspace_h__
+#define __sctp_os_userspace_h__
+/*
+ * Userspace includes
+ * All the opt_xxx.h files are placed in the kernel build directory.
+ * We will place them in userspace stack build directory.
+ */
+
+#include <errno.h>
+
+#if defined(__Userspace_os_Windows)
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <ws2ipdef.h>
+#include <ws2def.h>
+#include <iphlpapi.h>
+#include <Mswsock.h>
+#include <Windows.h>
+#include "user_environment.h"
+typedef CRITICAL_SECTION userland_mutex_t;
+#if WINVER < 0x0600
+enum {
+        C_SIGNAL = 0,
+        C_BROADCAST = 1,
+        C_MAX_EVENTS = 2
+};
+typedef struct
+{
+        u_int waiters_count;
+        CRITICAL_SECTION waiters_count_lock;
+        HANDLE events_[C_MAX_EVENTS];
+} userland_cond_t;
+#define InitializeConditionVariable(cond) InitializeXPConditionVariable(cond)
+#define DeleteConditionVariable(cond) DeleteXPConditionVariable(cond)
+#define SleepConditionVariableCS(cond, mtx, time) SleepXPConditionVariable(cond, mtx)
+#define WakeAllConditionVariable(cond) WakeAllXPConditionVariable(cond)
+#else
+#define DeleteConditionVariable(cond)
+typedef CONDITION_VARIABLE userland_cond_t;
+#endif
+typedef HANDLE userland_thread_t;
+#define ADDRESS_FAMILY  unsigned __int8
+#define IPVERSION  4
+#define MAXTTL     255
+#define uint64_t   unsigned __int64
+#define u_long     unsigned __int64
+#define u_int      unsigned __int32
+#define uint32_t   unsigned __int32
+#define u_int32_t  unsigned __int32
+#define int32_t    __int32
+#define int16_t    __int16
+#define uint16_t   unsigned __int16
+#define u_int16_t  unsigned __int16
+#define uint8_t    unsigned __int8
+#define u_int8_t   unsigned __int8
+#define int8_t     __int8
+#define u_char     unsigned char
+#define n_short    unsigned __int16
+#define u_short    unsigned __int16
+#define ssize_t    __int64
+#define size_t     __int32
+#define in_addr_t  unsigned __int32
+#define in_port_t  unsigned __int16
+#define n_time     unsigned __int32
+#define sa_family_t unsigned __int8
+#define IFNAMSIZ   64
+#define __func__        __FUNCTION__
+
+#ifndef EWOULDBLOCK
+#define EWOULDBLOCK             WSAEWOULDBLOCK
+#endif
+#ifndef EINPROGRESS
+#define EINPROGRESS             WSAEINPROGRESS
+#endif
+#ifndef EALREADY
+#define EALREADY                WSAEALREADY
+#endif
+#ifndef ENOTSOCK
+#define ENOTSOCK                WSAENOTSOCK
+#endif
+#ifndef EDESTADDRREQ
+#define EDESTADDRREQ            WSAEDESTADDRREQ
+#endif
+#ifndef EMSGSIZE
+#define EMSGSIZE                WSAEMSGSIZE
+#endif
+#ifndef EPROTOTYPE
+#define EPROTOTYPE              WSAEPROTOTYPE
+#endif
+#ifndef ENOPROTOOPT
+#define ENOPROTOOPT             WSAENOPROTOOPT
+#endif
+#ifndef EPROTONOSUPPORT
+#define EPROTONOSUPPORT         WSAEPROTONOSUPPORT
+#endif
+#ifndef ESOCKTNOSUPPORT
+#define ESOCKTNOSUPPORT         WSAESOCKTNOSUPPORT
+#endif
+#ifndef EOPNOTSUPP
+#define EOPNOTSUPP              WSAEOPNOTSUPP
+#endif
+#ifndef ENOTSUP
+#define ENOTSUP                 WSAEOPNOTSUPP
+#endif
+#ifndef EPFNOSUPPORT
+#define EPFNOSUPPORT            WSAEPFNOSUPPORT
+#endif
+#ifndef EAFNOSUPPORT
+#define EAFNOSUPPORT            WSAEAFNOSUPPORT
+#endif
+#ifndef EADDRINUSE
+#define EADDRINUSE              WSAEADDRINUSE
+#endif
+#ifndef EADDRNOTAVAIL
+#define EADDRNOTAVAIL           WSAEADDRNOTAVAIL
+#endif
+#ifndef ENETDOWN
+#define ENETDOWN                WSAENETDOWN
+#endif
+#ifndef ENETUNREACH
+#define ENETUNREACH             WSAENETUNREACH
+#endif
+#ifndef ENETRESET
+#define ENETRESET               WSAENETRESET
+#endif
+#ifndef ECONNABORTED
+#define ECONNABORTED            WSAECONNABORTED
+#endif
+#ifndef ECONNRESET
+#define ECONNRESET              WSAECONNRESET
+#endif
+#ifndef ENOBUFS
+#define ENOBUFS                 WSAENOBUFS
+#endif
+#ifndef EISCONN
+#define EISCONN                 WSAEISCONN
+#endif
+#ifndef ENOTCONN
+#define ENOTCONN                WSAENOTCONN
+#endif
+#ifndef ESHUTDOWN
+#define ESHUTDOWN               WSAESHUTDOWN
+#endif
+#ifndef ETOOMANYREFS
+#define ETOOMANYREFS            WSAETOOMANYREFS
+#endif
+#ifndef ETIMEDOUT
+#define ETIMEDOUT               WSAETIMEDOUT
+#endif
+#ifndef ECONNREFUSED
+#define ECONNREFUSED            WSAECONNREFUSED
+#endif
+#ifndef ELOOP
+#define ELOOP                   WSAELOOP
+#endif
+#ifndef EHOSTDOWN
+#define EHOSTDOWN               WSAEHOSTDOWN
+#endif
+#ifndef EHOSTUNREACH
+#define EHOSTUNREACH            WSAEHOSTUNREACH
+#endif
+#ifndef EPROCLIM
+#define EPROCLIM                WSAEPROCLIM
+#endif
+#ifndef EUSERS
+#define EUSERS                  WSAEUSERS
+#endif
+#ifndef EDQUOT
+#define EDQUOT                  WSAEDQUOT
+#endif
+#ifndef ESTALE
+#define ESTALE                  WSAESTALE
+#endif
+#ifndef EREMOTE
+#define EREMOTE                 WSAEREMOTE
+#endif
+
+typedef char* caddr_t;
+
+#define getifaddrs(interfaces)  (int)Win_getifaddrs(interfaces)
+#define if_nametoindex(x) (int)win_if_nametoindex(x)
+
+#define bzero(buf, len) memset(buf, 0, len)
+#define bcopy(srcKey, dstKey, len) memcpy(dstKey, srcKey, len)
+#define snprintf(data, size, format, name) _snprintf_s(data, size, _TRUNCATE, format, name)
+#define inline __inline
+#define __inline__ __inline
+#define random() rand()
+#define srandom(s) srand(s)
+#define MSG_EOR         0x8             /* data completes record */
+#define MSG_DONTWAIT    0x80            /* this message should be nonblocking */
+
+#ifdef CMSG_DATA
+#undef CMSG_DATA
+#endif
+#define CMSG_DATA(x) WSA_CMSG_DATA(x)
+#define CMSG_ALIGN(x) WSA_CMSGDATA_ALIGN(x)
+#if WINVER < 0x0600
+#define CMSG_FIRSTHDR(x) WSA_CMSG_FIRSTHDR(x)
+#define CMSG_NXTHDR(x, y) WSA_CMSG_NXTHDR(x, y)
+#define CMSG_SPACE(x) WSA_CMSG_SPACE(x)
+#define CMSG_LEN(x) WSA_CMSG_LEN(x)
+#endif
+
+/****  from sctp_os_windows.h ***************/
+#define SCTP_IFN_IS_IFT_LOOP(ifn)       ((ifn)->ifn_type == IFT_LOOP)
+#define SCTP_ROUTE_IS_REAL_LOOP(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifa && (ro)->ro_rt->rt_ifa->ifa_ifp && (ro)->ro_rt->rt_ifa->ifa_ifp->if_type == IFT_LOOP)
+
+/*
+ * Access to IFN's to help with src-addr-selection
+ */
+/* This could return VOID if the index works but for BSD we provide both. */
+#define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) \
+        ((ro)->ro_rt != NULL ? (ro)->ro_rt->rt_ifp : NULL)
+#define SCTP_ROUTE_HAS_VALID_IFN(ro) \
+        ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
+/******************************************/
+
+#define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) 1 /* compiles...  TODO use routing socket to determine */
+
+#define timeradd(tvp, uvp, vvp)   \
+        do {                          \
+            (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;  \
+                (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;  \
+                if ((vvp)->tv_usec >= 1000000) {                   \
+                    (vvp)->tv_sec++;                        \
+                        (vvp)->tv_usec -= 1000000;             \
+                }                         \
+        } while (0)
+
+#define timersub(tvp, uvp, vvp)   \
+        do {                          \
+            (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;  \
+                (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;  \
+                if ((vvp)->tv_usec < 0) {                   \
+                    (vvp)->tv_sec--;                        \
+                        (vvp)->tv_usec += 1000000;             \
+                }                       \
+        } while (0)
+
+#define BIG_ENDIAN 1
+#define LITTLE_ENDIAN 0
+#ifdef WORDS_BIGENDIAN
+#define BYTE_ORDER BIG_ENDIAN
+#else
+#define BYTE_ORDER LITTLE_ENDIAN
+#endif
+
+struct iovec {
+        ULONG len;
+        CHAR FAR *buf;
+};
+
+#define iov_base buf
+#define iov_len len
+
+struct ifa_msghdr {
+        unsigned __int16 ifam_msglen;
+        unsigned char    ifam_version;
+        unsigned char    ifam_type;
+        __int32          ifam_addrs;
+        __int32          ifam_flags;
+        unsigned __int16 ifam_index;
+        __int32          ifam_metric;
+};
+
+struct ifdevmtu {
+        int ifdm_current;
+        int ifdm_min;
+        int ifdm_max;
+};
+
+struct ifkpi {
+        unsigned int  ifk_module_id;
+        unsigned int  ifk_type;
+        union {
+                void *ifk_ptr;
+                int ifk_value;
+        } ifk_data;
+};
+
+struct ifreq {
+        char    ifr_name[16];
+        union {
+                struct sockaddr ifru_addr;
+                struct sockaddr ifru_dstaddr;
+                struct sockaddr ifru_broadaddr;
+                short  ifru_flags;
+                int ifru_metric;
+                int ifru_mtu;
+                int ifru_phys;
+                int ifru_media;
+                int    ifru_intval;
+                char*  ifru_data;
+                struct ifdevmtu ifru_devmtu;
+                struct ifkpi  ifru_kpi;
+                unsigned __int32 ifru_wake_flags;
+        } ifr_ifru;
+#define ifr_addr        ifr_ifru.ifru_addr
+#define ifr_dstaddr     ifr_ifru.ifru_dstaddr
+#define ifr_broadaddr   ifr_ifru.ifru_broadaddr
+#define ifr_flags       ifr_ifru.ifru_flags[0]
+#define ifr_prevflags   ifr_ifru.ifru_flags[1]
+#define ifr_metric      ifr_ifru.ifru_metric
+#define ifr_mtu         ifr_ifru.ifru_mtu
+#define ifr_phys        ifr_ifru.ifru_phys
+#define ifr_media       ifr_ifru.ifru_media
+#define ifr_data        ifr_ifru.ifru_data
+#define ifr_devmtu      ifr_ifru.ifru_devmtu
+#define ifr_intval      ifr_ifru.ifru_intval
+#define ifr_kpi         ifr_ifru.ifru_kpi
+#define ifr_wake_flags  ifr_ifru.ifru_wake_flags
+};
+
+/*#include <packon.h>
+#pragma pack(push, 1)*/
+struct ip {
+        u_char    ip_hl:4, ip_v:4;
+        u_char    ip_tos;
+        u_short   ip_len;
+        u_short   ip_id;
+        u_short   ip_off;
+#define IP_RP 0x8000
+#define IP_DF 0x4000
+#define IP_MF 0x2000
+#define IP_OFFMASK 0x1fff
+        u_char    ip_ttl;
+        u_char    ip_p;
+        u_short   ip_sum;
+    struct in_addr ip_src, ip_dst;
+};
+
+struct ifaddrs {
+        struct ifaddrs  *ifa_next;
+        char            *ifa_name;
+        unsigned int             ifa_flags;
+        struct sockaddr *ifa_addr;
+        struct sockaddr *ifa_netmask;
+        struct sockaddr *ifa_dstaddr;
+        void            *ifa_data;
+};
+
+struct udphdr {
+        unsigned __int16 uh_sport;
+        unsigned __int16 uh_dport;
+        unsigned __int16 uh_ulen;
+        unsigned __int16 uh_sum;
+};
+
+#else /* !defined(Userspace_os_Windows) */
+#include <sys/cdefs.h> /* needed? added from old __FreeBSD__ */
+#include <sys/socket.h>
+#if defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_OpenBSD)
+#include <pthread.h>
+#endif
+typedef pthread_mutex_t userland_mutex_t;
+typedef pthread_cond_t userland_cond_t;
+typedef pthread_t userland_thread_t;
+#endif
+
+#define mtx_lock(arg1)
+#define mtx_unlock(arg1)
+#define mtx_assert(arg1,arg2)
+#define MA_OWNED 7 /* sys/mutex.h typically on FreeBSD */
+#if !defined(__Userspace_os_FreeBSD)
+struct mtx {int dummy;};
+struct selinfo {int dummy;};
+struct sx {int dummy;};
+#endif
+
+#include <stdio.h>
+#include <string.h>
+/* #include <sys/param.h>  in FreeBSD defines MSIZE */
+/* #include <sys/ktr.h> */
+/* #include <sys/systm.h> */
+#if defined(__Userspace_os_Windows)
+#include <user_queue.h>
+#else
+#include <sys/queue.h>
+#endif
+/* #include <sys/kernel.h> */
+/* #include <sys/sysctl.h> */
+/* #include <sys/protosw.h> */
+/* on FreeBSD, this results in a redefintion of SOCK(BUF)_(UN)LOCK and
+ *  uknown type of struct mtx for sb_mtx in struct sockbuf */
+/* #include <sys/jail.h> */
+/* #include <sys/sysctl.h> */
+#include <user_atomic.h>
+#include <user_environment.h>
+#include <user_malloc.h>
+#include <user_mbuf.h>
+#include "user_socketvar.h" /* MALLOC_DECLARE's M_PCB. Replacement for sys/socketvar.h */
+/* #include <sys/uio.h> */
+/* #include <sys/lock.h> */
+#if defined(__FreeBSD__) && __FreeBSD_version > 602000
+#include <sys/rwlock.h>
+#endif
+/* #include <sys/kthread.h> */
+#if defined(__FreeBSD__) && __FreeBSD_version > 602000
+#include <sys/priv.h>
+#endif
+/* #include <sys/random.h> */
+/* #include <sys/limits.h> */
+/* #include <machine/cpu.h> */
+
+#if defined(__Userspace_os_Darwin)
+/* was a 0 byte file.  needed for structs if_data(64) and net_event_data */
+#include <net/if_var.h>
+#endif
+#if defined(__Userspace_os_FreeBSD)
+#include <net/if_types.h>
+/* #include <net/if_var.h> was a 0 byte file.  causes struct mtx redefinition */
+#endif
+/* OOTB only - dummy route used at the moment. should we port route to
+ *  userspace as well? */
+/* on FreeBSD, this results in a redefintion of struct route */
+/* #include <net/route.h> */
+#if !defined(__Userspace_os_Windows)
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+#else
+#include <user_ip_icmp.h>
+#endif
+/* #include <netinet/in_pcb.h> ported to userspace */
+#include <user_inpcb.h>
+
+/* for getifaddrs */
+#include <sys/types.h>
+#if !defined(__Userspace_os_Windows)
+#include <ifaddrs.h>
+
+/* for ioctl */
+#include <sys/ioctl.h>
+
+/* for close, etc. */
+#include <unistd.h>
+#endif
+
+/* lots of errno's used and needed in userspace */
+
+/* for offsetof */
+#include <stddef.h>
+
+#if defined(SCTP_PROCESS_LEVEL_LOCKS) && !defined(__Userspace_os_Windows)
+/* for pthread_mutex_lock, pthread_mutex_unlock, etc. */
+#include <pthread.h>
+#endif
+
+#ifdef IPSEC
+#include <netipsec/ipsec.h>
+#include <netipsec/key.h>
+#endif                          /* IPSEC */
+
+#ifdef INET6
+#if defined(__Userspace_os_FreeBSD)
+#include <sys/domain.h>
+#endif
+#ifdef IPSEC
+#include <netipsec/ipsec6.h>
+#endif
+#if !defined(__Userspace_os_Windows)
+#include <netinet/ip6.h>
+#include <netinet/icmp6.h>
+#endif
+#if defined(__Userspace_os_Linux) || defined(__Userspace_os_Darwin) || defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_OpenBSD) ||defined(__Userspace_os_Windows)
+#include "user_ip6_var.h"
+#else
+#include <netinet6/ip6_var.h>
+#endif
+#if defined(__Userspace_os_FreeBSD)
+#include <netinet6/in6_pcb.h>
+#include <netinet6/ip6protosw.h>
+/* #include <netinet6/nd6.h> was a 0 byte file */
+#include <netinet6/scope6_var.h>
+#endif
+#endif /* INET6 */
+
+#if defined(HAVE_SCTP_PEELOFF_SOCKOPT)
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#endif
+
+#if __FreeBSD_version >= 700000
+#include <netinet/ip_options.h>
+#endif
+
+#define SCTP_PRINTF(...)                                  \
+        if (SCTP_BASE_VAR(debug_printf)) {                \
+                SCTP_BASE_VAR(debug_printf)(__VA_ARGS__); \
+        }
+
+#if defined(__FreeBSD__)
+#ifndef in6pcb
+#define in6pcb          inpcb
+#endif
+#endif
+/* Declare all the malloc names for all the various mallocs */
+MALLOC_DECLARE(SCTP_M_MAP);
+MALLOC_DECLARE(SCTP_M_STRMI);
+MALLOC_DECLARE(SCTP_M_STRMO);
+MALLOC_DECLARE(SCTP_M_ASC_ADDR);
+MALLOC_DECLARE(SCTP_M_ASC_IT);
+MALLOC_DECLARE(SCTP_M_AUTH_CL);
+MALLOC_DECLARE(SCTP_M_AUTH_KY);
+MALLOC_DECLARE(SCTP_M_AUTH_HL);
+MALLOC_DECLARE(SCTP_M_AUTH_IF);
+MALLOC_DECLARE(SCTP_M_STRESET);
+MALLOC_DECLARE(SCTP_M_CMSG);
+MALLOC_DECLARE(SCTP_M_COPYAL);
+MALLOC_DECLARE(SCTP_M_VRF);
+MALLOC_DECLARE(SCTP_M_IFA);
+MALLOC_DECLARE(SCTP_M_IFN);
+MALLOC_DECLARE(SCTP_M_TIMW);
+MALLOC_DECLARE(SCTP_M_MVRF);
+MALLOC_DECLARE(SCTP_M_ITER);
+MALLOC_DECLARE(SCTP_M_SOCKOPT);
+
+#if defined(SCTP_LOCAL_TRACE_BUF)
+
+#define SCTP_GET_CYCLECOUNT get_cyclecount()
+#define SCTP_CTR6 sctp_log_trace
+
+#else
+#define SCTP_CTR6 CTR6
+#endif
+
+/* Empty ktr statement for _Userspace__ (similar to what is done for mac) */
+#define CTR6(m, d, p1, p2, p3, p4, p5, p6)
+
+
+
+#define SCTP_BASE_INFO(__m) system_base_info.sctppcbinfo.__m
+#define SCTP_BASE_STATS system_base_info.sctpstat
+#define SCTP_BASE_STAT(__m)     system_base_info.sctpstat.__m
+#define SCTP_BASE_SYSCTL(__m) system_base_info.sctpsysctl.__m
+#define SCTP_BASE_VAR(__m) system_base_info.__m
+
+/*
+ *
+ */
+#if !defined(__Userspace_os_Darwin)
+#define USER_ADDR_NULL  (NULL)          /* FIX ME: temp */
+#endif
+
+#if defined(SCTP_DEBUG)
+#include <netinet/sctp_constants.h>
+#define SCTPDBG(level, ...)  \
+{                              \
+    do {    \
+        if (SCTP_BASE_SYSCTL(sctp_debug_on) & level) {  \
+            SCTP_PRINTF(__VA_ARGS__);           \
+        }        \
+        } while (0);     \
+}
+#define SCTPDBG_ADDR(level, addr)                                       \
+{                                                                       \
+    do {                                                                \
+        if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) {                                 \
+            sctp_print_address(addr);                                   \
+        }                                                               \
+    } while (0);                                                        \
+}
+#else
+#define SCTPDBG(level, ...)
+#define SCTPDBG_ADDR(level, addr)
+#endif
+
+#ifdef SCTP_LTRACE_CHUNKS
+#define SCTP_LTRACE_CHK(a, b, c, d) if(sctp_logging_level & SCTP_LTRACE_CHUNK_ENABLE) CTR6(KTR_SUBSYS, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_CHUNK_PROC, 0, a, b, c, d)
+#else
+#define SCTP_LTRACE_CHK(a, b, c, d)
+#endif
+
+#ifdef SCTP_LTRACE_ERRORS
+#define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err) \
+        if (sctp_logging_level & SCTP_LTRACE_ERROR_ENABLE) \
+                SCTP_PRINTF("mbuf:%p inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
+                            (void *)m, (void *)inp, (void *)stcb, (void *)net, file, __LINE__, err);
+#define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err) \
+        if (sctp_logging_level & SCTP_LTRACE_ERROR_ENABLE) \
+                SCTP_PRINTF("inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
+                            (void *)inp, (void *)stcb, (void *)net, file, __LINE__, err);
+#else
+#define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err)
+#define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err)
+#endif
+
+
+/*
+ * Local address and interface list handling
+ */
+#define SCTP_MAX_VRF_ID         0
+#define SCTP_SIZE_OF_VRF_HASH   3
+#define SCTP_IFNAMSIZ           IFNAMSIZ
+#define SCTP_DEFAULT_VRFID      0
+#define SCTP_VRF_ADDR_HASH_SIZE 16
+#define SCTP_VRF_IFN_HASH_SIZE  3
+#define SCTP_INIT_VRF_TABLEID(vrf)
+
+#if !defined(__Userspace_os_Windows)
+#define SCTP_IFN_IS_IFT_LOOP(ifn) (strncmp((ifn)->ifn_name, "lo", 2) == 0)
+/* BSD definition */
+/* #define SCTP_ROUTE_IS_REAL_LOOP(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifa && (ro)->ro_rt->rt_ifa->ifa_ifp && (ro)->ro_rt->rt_ifa->ifa_ifp->if_type == IFT_LOOP) */
+/* only used in IPv6 scenario, which isn't supported yet */
+#define SCTP_ROUTE_IS_REAL_LOOP(ro) 0
+
+/*
+ * Access to IFN's to help with src-addr-selection
+ */
+/* This could return VOID if the index works but for BSD we provide both. */
+#define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) (void *)ro->ro_rt->rt_ifp
+#define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) 1 /* compiles...  TODO use routing socket to determine */
+#define SCTP_ROUTE_HAS_VALID_IFN(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
+#endif
+
+/*
+ * general memory allocation
+ */
+#define SCTP_MALLOC(var, type, size, name) \
+    do { \
+        MALLOC(var, type, size, name, M_NOWAIT); \
+    } while (0)
+
+#define SCTP_FREE(var, type)    FREE(var, type)
+
+#define SCTP_MALLOC_SONAME(var, type, size) \
+    do { \
+        MALLOC(var, type, size, M_SONAME, (M_WAITOK | M_ZERO)); \
+    } while (0)
+
+#define SCTP_FREE_SONAME(var)   FREE(var, M_SONAME)
+
+#define SCTP_PROCESS_STRUCT struct proc *
+
+/*
+ * zone allocation functions
+ */
+
+
+#if defined(SCTP_SIMPLE_ALLOCATOR)
+/*typedef size_t sctp_zone_t;*/
+#define SCTP_ZONE_INIT(zone, name, size, number) { \
+        zone = size; \
+}
+
+/* __Userspace__ SCTP_ZONE_GET: allocate element from the zone */
+#define SCTP_ZONE_GET(zone, type)  \
+        (type *)malloc(zone);
+
+
+/* __Userspace__ SCTP_ZONE_FREE: free element from the zone */
+#define SCTP_ZONE_FREE(zone, element) { \
+        free(element);  \
+}
+
+#define SCTP_ZONE_DESTROY(zone)
+#else
+/*__Userspace__
+  Compiling & linking notes: Needs libumem, which has been placed in ./user_lib
+  All userspace header files are in ./user_include. Makefile will need the
+  following.
+  CFLAGS = -I./ -Wall
+  LDFLAGS = -L./user_lib -R./user_lib -lumem
+*/
+#include "user_include/umem.h"
+
+/* __Userspace__ SCTP_ZONE_INIT: initialize the zone */
+/*
+  __Userspace__
+  No equivalent function to uma_zone_set_max added yet. (See SCTP_ZONE_INIT in sctp_os_bsd.h
+  for reference). It may not be required as mentioned in
+  http://nixdoc.net/man-pages/FreeBSD/uma_zalloc.9.html that
+  max limits may not enforced on systems with more than one CPU.
+*/
+#define SCTP_ZONE_INIT(zone, name, size, number) { \
+        zone = umem_cache_create(name, size, 0, NULL, NULL, NULL, NULL, NULL, 0); \
+  }
+
+/* __Userspace__ SCTP_ZONE_GET: allocate element from the zone */
+#define SCTP_ZONE_GET(zone, type) \
+        (type *)umem_cache_alloc(zone, UMEM_DEFAULT);
+
+
+/* __Userspace__ SCTP_ZONE_FREE: free element from the zone */
+#define SCTP_ZONE_FREE(zone, element) \
+        umem_cache_free(zone, element);
+
+
+/* __Userspace__ SCTP_ZONE_DESTROY: destroy the zone */
+#define SCTP_ZONE_DESTROY(zone) \
+        umem_cache_destroy(zone);
+#endif
+
+/* global struct ifaddrs used in sctp_init_ifns_for_vrf getifaddrs call
+ *  but references to fields are needed to persist as the vrf is queried.
+ *  getifaddrs allocates memory that needs to be freed with a freeifaddrs
+ *  call; this global is used to call freeifaddrs upon in sctp_pcb_finish
+ */
+extern struct ifaddrs *g_interfaces;
+
+
+/*
+ * __Userspace__ Defining sctp_hashinit_flags() and sctp_hashdestroy() for userland.
+ */
+void *sctp_hashinit_flags(int elements, struct malloc_type *type,
+                    u_long *hashmask, int flags);
+void
+sctp_hashdestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask);
+
+void
+sctp_hashfreedestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask);
+
+
+#define HASH_NOWAIT 0x00000001
+#define HASH_WAITOK 0x00000002
+
+/* M_PCB is MALLOC_DECLARE'd in sys/socketvar.h */
+#define SCTP_HASH_INIT(size, hashmark) sctp_hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT)
+
+#define SCTP_HASH_FREE(table, hashmark) sctp_hashdestroy(table, M_PCB, hashmark)
+
+#define SCTP_HASH_FREE_DESTROY(table, hashmark)  sctp_hashfreedestroy(table, M_PCB, hashmark)
+#define SCTP_M_COPYM    m_copym
+
+/*
+ * timers
+ */
+/* __Userspace__
+ * user_sctp_callout.h has typedef struct sctp_callout sctp_os_timer_t;
+ * which is used in the timer related functions such as
+ * SCTP_OS_TIMER_INIT etc.
+*/
+#include <netinet/sctp_callout.h>
+
+/* __Userspace__ Creating a receive thread */
+#include <user_recv_thread.h>
+
+/*__Userspace__ defining KTR_SUBSYS 1 as done in sctp_os_macosx.h */
+#define KTR_SUBSYS 1
+
+#define sctp_get_tick_count() (ticks)
+
+/* The packed define for 64 bit platforms */
+#if !defined(__Userspace_os_Windows)
+#define SCTP_PACKED __attribute__((packed))
+#define SCTP_UNUSED __attribute__((unused))
+#else
+#define SCTP_PACKED
+#define SCTP_UNUSED
+#endif
+
+/*
+ * Functions
+ */
+/* Mbuf manipulation and access macros  */
+#define SCTP_BUF_LEN(m) (m->m_len)
+#define SCTP_BUF_NEXT(m) (m->m_next)
+#define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt)
+#define SCTP_BUF_RESV_UF(m, size) m->m_data += size
+#define SCTP_BUF_AT(m, size) m->m_data + size
+#define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT)
+#define SCTP_BUF_EXTEND_SIZE(m) (m->m_ext.ext_size)
+#define SCTP_BUF_TYPE(m) (m->m_type)
+#define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif)
+#define SCTP_BUF_PREPEND        M_PREPEND
+
+#define SCTP_ALIGN_TO_END(m, len) if(m->m_flags & M_PKTHDR) { \
+                                     MH_ALIGN(m, len); \
+                                  } else if ((m->m_flags & M_EXT) == 0) { \
+                                     M_ALIGN(m, len); \
+                                  }
+
+/* We make it so if you have up to 4 threads
+ * writting based on the default size of
+ * the packet log 65 k, that would be
+ * 4 16k packets before we would hit
+ * a problem.
+ */
+#define SCTP_PKTLOG_WRITERS_NEED_LOCK 3
+
+
+/*
+ * routes, output, etc.
+ */
+
+typedef struct sctp_route       sctp_route_t;
+typedef struct sctp_rtentry     sctp_rtentry_t;
+
+static inline void sctp_userspace_rtalloc(sctp_route_t *ro)
+{
+        if (ro->ro_rt != NULL) {
+                ro->ro_rt->rt_refcnt++;
+                return;
+        }
+
+        ro->ro_rt = (sctp_rtentry_t *) malloc(sizeof(sctp_rtentry_t));
+        if (ro->ro_rt == NULL)
+                return;
+
+        /* initialize */
+        memset(ro->ro_rt, 0, sizeof(sctp_rtentry_t));
+        ro->ro_rt->rt_refcnt = 1;
+
+        /* set MTU */
+        /* TODO set this based on the ro->ro_dst, looking up MTU with routing socket */
+#if 0
+        if (userspace_rawroute == -1) {
+                userspace_rawroute = socket(AF_ROUTE, SOCK_RAW, 0);
+                if (userspace_rawroute == -1)
+                        return;
+        }
+#endif
+        ro->ro_rt->rt_rmx.rmx_mtu = 1500; /* FIXME temporary solution */
+
+        /* TODO enable the ability to obtain interface index of route for
+         *  SCTP_GET_IF_INDEX_FROM_ROUTE macro.
+         */
+}
+#define SCTP_RTALLOC(ro, vrf_id) sctp_userspace_rtalloc((sctp_route_t *)ro)
+
+/* dummy rtfree needed once user_route.h is included */
+static inline void sctp_userspace_rtfree(sctp_rtentry_t *rt)
+{
+        if(rt == NULL) {
+                return;
+        }
+        if(--rt->rt_refcnt > 0) {
+                return;
+        }
+        free(rt);
+        rt = NULL;
+}
+#define rtfree(arg1) sctp_userspace_rtfree(arg1)
+
+
+/*************************/
+/*      MTU              */
+/*************************/
+int sctp_userspace_get_mtu_from_ifn(uint32_t if_index, int af);
+
+#define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, af) sctp_userspace_get_mtu_from_ifn(ifn_index, af)
+
+#define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((rt != NULL) ? rt->rt_rmx.rmx_mtu : 0)
+
+#define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn)  sctp_userspace_get_mtu_from_ifn(if_nametoindex(((struct ifaddrs *) (sctp_ifn))->ifa_name), AF_INET)
+
+#define SCTP_SET_MTU_OF_ROUTE(sa, rt, mtu) do { \
+                                              if (rt != NULL) \
+                                                 rt->rt_rmx.rmx_mtu = mtu; \
+                                           } while(0)
+
+/* (de-)register interface event notifications */
+#define SCTP_REGISTER_INTERFACE(ifhandle, af)
+#define SCTP_DEREGISTER_INTERFACE(ifhandle, af)
+
+
+/*************************/
+/* These are for logging */
+/*************************/
+/* return the base ext data pointer */
+#define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf)
+ /* return the refcnt of the data pointer */
+#define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ref_cnt)
+/* return any buffer related flags, this is
+ * used beyond logging for apple only.
+ */
+#define SCTP_BUF_GET_FLAGS(m) (m->m_flags)
+
+/* For BSD this just accesses the M_PKTHDR length
+ * so it operates on an mbuf with hdr flag. Other
+ * O/S's may have seperate packet header and mbuf
+ * chain pointers.. thus the macro.
+ */
+#define SCTP_HEADER_TO_CHAIN(m) (m)
+#define SCTP_DETACH_HEADER_FROM_CHAIN(m)
+#define SCTP_HEADER_LEN(m) ((m)->m_pkthdr.len)
+#define SCTP_GET_HEADER_FOR_OUTPUT(o_pak) 0
+#define SCTP_RELEASE_HEADER(m)
+#define SCTP_RELEASE_PKT(m)     sctp_m_freem(m)
+/* UDP __Userspace__ - dummy definition */
+#define SCTP_ENABLE_UDP_CSUM(m) m=m
+/* BSD definition */
+/* #define SCTP_ENABLE_UDP_CSUM(m) do { \ */
+/*                                         m->m_pkthdr.csum_flags = CSUM_UDP; \ */
+/*                                         m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); \ */
+/*                                 } while (0) */
+
+#define SCTP_GET_PKT_VRFID(m, vrf_id)  ((vrf_id = SCTP_DEFAULT_VRFID) != SCTP_DEFAULT_VRFID)
+
+
+
+/* Attach the chain of data into the sendable packet. */
+#define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \
+                                                  pak = m; \
+                                                  pak->m_pkthdr.len = packet_length; \
+                          } while(0)
+
+/* Other m_pkthdr type things */
+/* FIXME need real definitions */
+#define SCTP_IS_IT_BROADCAST(dst, m) 0
+/* OOTB only #define SCTP_IS_IT_BROADCAST(dst, m) ((m->m_flags & M_PKTHDR) ? in_broadcast(dst, m->m_pkthdr.rcvif) : 0)  BSD def */
+#define SCTP_IS_IT_LOOPBACK(m) 0
+/* OOTB ONLY #define SCTP_IS_IT_LOOPBACK(m) ((m->m_flags & M_PKTHDR) && ((m->m_pkthdr.rcvif == NULL) || (m->m_pkthdr.rcvif->if_type == IFT_LOOP)))  BSD def */
+
+
+/* This converts any input packet header
+ * into the chain of data holders, for BSD
+ * its a NOP.
+ */
+
+/* get the v6 hop limit */
+#define SCTP_GET_HLIM(inp, ro) 128 /* As done for __Windows__ */
+#define IPv6_HOP_LIMIT 128
+
+/* is the endpoint v6only? */
+#define SCTP_IPV6_V6ONLY(inp)   (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY)
+/* is the socket non-blocking? */
+#define SCTP_SO_IS_NBIO(so)     ((so)->so_state & SS_NBIO)
+#define SCTP_SET_SO_NBIO(so)    ((so)->so_state |= SS_NBIO)
+#define SCTP_CLEAR_SO_NBIO(so)  ((so)->so_state &= ~SS_NBIO)
+/* get the socket type */
+#define SCTP_SO_TYPE(so)        ((so)->so_type)
+
+/* reserve sb space for a socket */
+#define SCTP_SORESERVE(so, send, recv)  soreserve(so, send, recv)
+
+/* wakeup a socket */
+#define SCTP_SOWAKEUP(so)       wakeup(&(so)->so_timeo, so)
+/* clear the socket buffer state */
+#define SCTP_SB_CLEAR(sb)       \
+        (sb).sb_cc = 0;         \
+        (sb).sb_mb = NULL;      \
+        (sb).sb_mbcnt = 0;
+
+#define SCTP_SB_LIMIT_RCV(so) so->so_rcv.sb_hiwat
+#define SCTP_SB_LIMIT_SND(so) so->so_snd.sb_hiwat
+
+/* Future zero copy wakeup/send  function */
+#define SCTP_ZERO_COPY_EVENT(inp, so)
+/* This is re-pulse ourselves for sendbuf */
+#define SCTP_ZERO_COPY_SENDQ_EVENT(inp, so)
+
+
+/*
+ * SCTP AUTH
+ */
+/* USE_SCTP_SHA1 is defined if you need sctp_sha1.[ch].  SHA1_* functions are defined
+ *  there.  On Linux, they are also defined in libcrypto.a once you install
+ *  the libssl-dev package (on Ubuntu, at least).
+ */
+/* #define USE_SCTP_SHA1 */
+
+/* #define HAVE_SHA2 sha2.h exists on Linux? */
+
+
+#define SCTP_READ_RANDOM(buf, len)      read_random(buf, len)
+
+
+#include <netinet/sctp_sha1.h>
+#if 0 /*this was old _KERNEL code... */
+#include <crypto/sha1.h>
+/* map standard crypto API names */
+#define SHA1_Init       SHA1Init
+#define SHA1_Update     SHA1Update
+#define SHA1_Final(x,y) SHA1Final((caddr_t)x, y)
+#endif
+
+#if defined(HAVE_SHA2)
+#include <crypto/sha2/sha2.h>
+#endif
+#if 0
+/*  going to have to port so generic across OS's... */
+#if 1 /* openssl header files on FreeBSD 6.3 on Emulab and libssl-dev for Ubuntu */
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+/* libssl-dev calls this SHA_CTX, but it's refered to as SHA1_CTX within the
+ *  SCTP stack code so here we typedef (or macro?) to equate the two.
+ */
+typedef SHA_CTX SHA1_CTX;
+
+#else /* only _KERNEL? */
+
+#include <sys/md5.h>
+/* map standard crypto API names */
+#define MD5_Init        MD5Init
+#define MD5_Update      MD5Update
+#define MD5_Final       MD5Final
+#endif
+#endif
+
+
+/* start OOTB only stuff */
+
+
+/* TODO IFT_LOOP is in net/if_types.h on Linux */
+#define IFT_LOOP 0x18
+
+/* sctp_pcb.h */
+/* typedef int SHA1_CTX; */
+/* typedef int MD5_CTX; */
+#ifdef HAVE_SHA2
+typedef int SHA256_CTX;
+typedef int SHA384_CTX;
+typedef int SHA512_CTX;
+#endif
+
+#if defined(__Userspace_os_Windows)
+#define SHUT_RD 1
+#define SHUT_WR 2
+#define SHUT_RDWR 3
+#endif
+#define PRU_FLUSH_RD SHUT_RD
+#define PRU_FLUSH_WR SHUT_WR
+#define PRU_FLUSH_RDWR SHUT_RDWR
+
+/* netinet/ip_var.h defintions are behind an if defined for _KERNEL on FreeBSD */
+#define IP_RAWOUTPUT            0x2
+
+
+/* end OOTB only stuff */
+
+#define AF_CONN 123
+struct sockaddr_conn {
+#ifdef HAVE_SCONN_LEN
+        uint8_t sconn_len;
+#endif
+        uint8_t sconn_family;
+        uint16_t sconn_port;
+        void *sconn_addr;
+};
+
+/*
+ * IP output routines
+ */
+
+/* Defining SCTP_IP_ID macro.
+   In netinet/ip_output.c, we have u_short ip_id;
+   In netinet/ip_var.h, we have extern u_short  ip_id; (enclosed within _KERNEL_)
+   See static __inline uint16_t ip_newid(void) in netinet/ip_var.h
+ */
+#define SCTP_IP_ID(inp) (ip_id)
+
+/* need sctphdr to get port in SCTP_IP_OUTPUT. sctphdr defined in sctp.h  */
+#include <netinet/sctp.h>
+extern void sctp_userspace_ip_output(int *result, struct mbuf *o_pak,
+                                     sctp_route_t *ro, void *stcb,
+                                     uint32_t vrf_id);
+
+#define SCTP_IP_OUTPUT(result, o_pak, ro, stcb, vrf_id) sctp_userspace_ip_output(&result, o_pak, ro, stcb, vrf_id);
+
+#if defined(INET6)
+extern void sctp_userspace_ip6_output(int *result, struct mbuf *o_pak,
+                                      struct route_in6 *ro, void *stcb,
+                                      uint32_t vrf_id);
+#define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) sctp_userspace_ip6_output(&result, o_pak, ro, stcb, vrf_id);
+#endif
+
+
+
+#if 0
+#define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) \
+{ \
+        if (stcb && stcb->sctp_ep) \
+                result = ip6_output(o_pak, \
+                                    ((struct in6pcb *)(stcb->sctp_ep))->in6p_outputopts, \
+                                    (ro), 0, 0, ifp, NULL); \
+        else \
+                result = ip6_output(o_pak, NULL, (ro), 0, 0, ifp, NULL); \
+}
+#endif
+
+struct mbuf *
+sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header, int how, int allonebuf, int type);
+
+
+/* with the current included files, this is defined in Linux but
+ *  in FreeBSD, it is behind a _KERNEL in sys/socket.h ...
+ */
+#if defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_OpenBSD)
+/* stolen from /usr/include/sys/socket.h */
+#define CMSG_ALIGN(n)   _ALIGN(n)
+#elif defined(__Userspace_os_Darwin)
+#if !defined(__DARWIN_ALIGNBYTES)
+#define __DARWIN_ALIGNBYTES     (sizeof(__darwin_size_t) - 1)
+#endif
+
+#if !defined(__DARWIN_ALIGN)
+#define __DARWIN_ALIGN(p)       ((__darwin_size_t)((char *)(uintptr_t)(p) + __DARWIN_ALIGNBYTES) &~ __DARWIN_ALIGNBYTES)
+#endif
+
+#if !defined(__DARWIN_ALIGNBYTES32)
+#define __DARWIN_ALIGNBYTES32     (sizeof(__uint32_t) - 1)
+#endif
+
+#if !defined(__DARWIN_ALIGN32)
+#define __DARWIN_ALIGN32(p)       ((__darwin_size_t)((char *)(uintptr_t)(p) + __DARWIN_ALIGNBYTES32) &~ __DARWIN_ALIGNBYTES32)
+#endif
+#define CMSG_ALIGN(n)   __DARWIN_ALIGN32(n)
+#endif
+#define I_AM_HERE \
+                do { \
+                        SCTP_PRINTF("%s:%d at %s\n", __FILE__, __LINE__ , __FUNCTION__); \
+                } while (0)
+
+#ifndef timevalsub
+#define timevalsub(tp1, tp2)                       \
+        do {                                       \
+                (tp1)->tv_sec -= (tp2)->tv_sec;    \
+                (tp1)->tv_usec -= (tp2)->tv_usec;  \
+                if ((tp1)->tv_usec < 0) {          \
+                        (tp1)->tv_sec--;           \
+                        (tp1)->tv_usec += 1000000; \
+                }                                  \
+        } while (0)
+#endif
+
+#if defined(__Userspace_os_Linux)
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar)             \
+         for ((var) = ((head)->tqh_first);                     \
+              (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
+              (var) = (tvar))
+
+#define LIST_FOREACH_SAFE(var, head, field, tvar)              \
+         for ((var) = ((head)->lh_first);                      \
+              (var) && ((tvar) = LIST_NEXT((var), field), 1);  \
+              (var) = (tvar))
+#endif
+#endif