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gstreamer/ext/sctp/usrsctp/usrsctplib/netinet/sctp_os_userspace.h
Tim-Philipp Müller f4538e24b6 sctp: import internal copy of usrsctp library 
There are problems with global shared state and no API stability
guarantees, and we can't rely on distros shipping the fixes we
need. Both firefox and Chrome bundle their own copies too.

Imported from https://github.com/sctplab/usrsctp,
commit 547d3b46c64876c0336b9eef297fda58dbe1adaf
Date: Thu Jul 23 21:49:32 2020 +0200

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/870

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1465>
2020-08-14 01:32:45 +01:00

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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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(_WIN32)
#include <winsock2.h>
#include <ws2tcpip.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;
void InitializeXPConditionVariable(userland_cond_t *);
void DeleteXPConditionVariable(userland_cond_t *);
int SleepXPConditionVariable(userland_cond_t *, userland_mutex_t *);
void WakeAllXPConditionVariable(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
/* VS2010 comes with stdint.h */
#if !defined(_MSC_VER) || (_MSC_VER >= 1600)
#include <stdint.h>
#else
typedef unsigned __int64 uint64_t;
typedef unsigned __int32 uint32_t;
typedef __int32 int32_t;
typedef unsigned __int16 uint16_t;
typedef __int16 int16_t;
typedef unsigned __int8 uint8_t;
typedef __int8 int8_t;
#endif
#ifndef _SIZE_T_DEFINED
#typedef __int32 size_t;
#endif
typedef unsigned __int32 u_int;
typedef unsigned char u_char;
typedef unsigned __int16 u_short;
typedef unsigned __int8 sa_family_t;
#ifndef _SSIZE_T_DEFINED
typedef __int64 ssize_t;
#endif
#if !defined(__MINGW32__)
#define __func__ __FUNCTION__
#endif
#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 bzero(buf, len) memset(buf, 0, len)
#define bcopy(srcKey, dstKey, len) memcpy(dstKey, srcKey, len)
#if defined(_MSC_VER) && (_MSC_VER < 1900) && !defined(__MINGW32__)
#define SCTP_SNPRINTF(data, size, format, ...) \
if (_snprintf_s(data, size, _TRUNCATE, format, __VA_ARGS__) < 0) { \
data[0] = '\0'; \
}
#else
#define SCTP_SNPRINTF(data, ...) \
if (snprintf(data, __VA_ARGS__) < 0 ) { \
data[0] = '\0'; \
}
#endif
#define inline __inline
#define __inline__ __inline
#define MSG_EOR 0x8 /* data completes record */
#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
#ifdef CMSG_DATA
#undef CMSG_DATA
#endif
/*
* The following definitions should apply iff WINVER < 0x0600
* but that check doesn't work in all cases. So be more pedantic...
*/
#define CMSG_DATA(x) WSA_CMSG_DATA(x)
#define CMSG_ALIGN(x) WSA_CMSGDATA_ALIGN(x)
#ifndef CMSG_FIRSTHDR
#define CMSG_FIRSTHDR(x) WSA_CMSG_FIRSTHDR(x)
#endif
#ifndef CMSG_NXTHDR
#define CMSG_NXTHDR(x, y) WSA_CMSG_NXTHDR(x, y)
#endif
#ifndef CMSG_SPACE
#define CMSG_SPACE(x) WSA_CMSG_SPACE(x)
#endif
#ifndef CMSG_LEN
#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 BIG_ENDIAN 1
#define LITTLE_ENDIAN 0
#ifdef WORDS_BIGENDIAN
#define BYTE_ORDER BIG_ENDIAN
#else
#define BYTE_ORDER LITTLE_ENDIAN
#endif
#else /* !defined(Userspace_os_Windows) */
#include <sys/socket.h>
#if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__linux__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__native_client__) || defined(__Fuchsia__)
#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
#if defined(_WIN32) || defined(__native_client__)
#define IFNAMSIZ 64
#define random() rand()
#define srandom(s) srand(s)
#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)
/*#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 {
uint16_t uh_sport;
uint16_t uh_dport;
uint16_t uh_ulen;
uint16_t uh_sum;
};
struct iovec {
size_t len;
char *buf;
};
#define iov_base buf
#define iov_len len
struct ifa_msghdr {
uint16_t ifam_msglen;
unsigned char ifam_version;
unsigned char ifam_type;
uint32_t ifam_addrs;
uint32_t ifam_flags;
uint16_t ifam_index;
uint32_t 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;
};
#endif
#if defined(_WIN32)
int Win_getifaddrs(struct ifaddrs**);
#define getifaddrs(interfaces) (int)Win_getifaddrs(interfaces)
int win_if_nametoindex(const char *);
#define if_nametoindex(x) win_if_nametoindex(x)
#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(__FreeBSD__)
struct mtx {int dummy;};
#if !defined(__NetBSD__)
struct selinfo {int dummy;};
#endif
struct sx {int dummy;};
#endif
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
/* #include <sys/param.h> in FreeBSD defines MSIZE */
/* #include <sys/ktr.h> */
/* #include <sys/systm.h> */
#if defined(HAVE_SYS_QUEUE_H)
#include <sys/queue.h>
#else
#include <user_queue.h>
#endif
#include <user_malloc.h>
/* #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 "user_socketvar.h" /* MALLOC_DECLARE's M_PCB. Replacement for sys/socketvar.h */
/* #include <sys/jail.h> */
/* #include <sys/sysctl.h> */
#include <user_environment.h>
#include <user_atomic.h>
#include <user_mbuf.h>
/* #include <sys/uio.h> */
/* #include <sys/lock.h> */
#if defined(__FreeBSD__) && !defined(__Userspace__)
#include <sys/rwlock.h>
#endif
/* #include <sys/kthread.h> */
#if defined(__FreeBSD__) && !defined(__Userspace__)
#include <sys/priv.h>
#endif
/* #include <sys/random.h> */
#include <limits.h>
/* #include <machine/cpu.h> */
#if defined(__APPLE__)
/* was a 0 byte file. needed for structs if_data(64) and net_event_data */
#include <net/if_var.h>
#endif
#if defined(__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(_WIN32) && !defined(__native_client__)
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#endif
#if defined(HAVE_NETINET_IP_ICMP_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(_WIN32)
#if defined(INET) || defined(INET6)
#include <ifaddrs.h>
#endif
/* for ioctl */
#include <sys/ioctl.h>
/* for close, etc. */
#include <unistd.h>
/* for gettimeofday */
#include <sys/time.h>
#endif
/* lots of errno's used and needed in userspace */
/* for offsetof */
#include <stddef.h>
#if defined(SCTP_PROCESS_LEVEL_LOCKS) && !defined(_WIN32)
/* 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(__FreeBSD__)
#include <sys/domain.h>
#endif
#ifdef IPSEC
#include <netipsec/ipsec6.h>
#endif
#if !defined(_WIN32)
#include <netinet/ip6.h>
#endif
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__linux__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(_WIN32)
#include "user_ip6_var.h"
#else
#include <netinet6/ip6_var.h>
#endif
#if defined(__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
#include "netinet/sctp_sha1.h"
#if defined(__FreeBSD__) && !defined(__Userspace__)
#include <netinet/ip_options.h>
#endif
#define SCTP_PRINTF(...) \
if (SCTP_BASE_VAR(debug_printf)) { \
SCTP_BASE_VAR(debug_printf)(__VA_ARGS__); \
}
/* 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(__APPLE__)
#define USER_ADDR_NULL (NULL) /* FIX ME: temp */
#endif
#include <netinet/sctp_constants.h>
#if defined(SCTP_DEBUG)
#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(_WIN32)
#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
/*
* __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
/* The packed define for 64 bit platforms */
#if !defined(_WIN32)
#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); \
}
#if !defined(_WIN32)
#define SCTP_SNPRINTF(data, ...) \
if (snprintf(data, __VA_ARGS__) < 0) { \
data[0] = '\0'; \
}
#endif
/* 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, fibnum) 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);
}
#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)
/*************************/
/* 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)
#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
#define IPv6_HOP_LIMIT 128
/* is the endpoint v6only? */
#define SCTP_IPV6_V6ONLY(sctp_inpcb) ((sctp_inpcb)->ip_inp.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
#define SCTP_READ_RANDOM(buf, len) read_random(buf, len)
#define SCTP_SHA1_CTX struct sctp_sha1_context
#define SCTP_SHA1_INIT sctp_sha1_init
#define SCTP_SHA1_UPDATE sctp_sha1_update
#define SCTP_SHA1_FINAL(x,y) sctp_sha1_final((unsigned char *)x, y)
/* start OOTB only stuff */
/* TODO IFT_LOOP is in net/if_types.h on Linux */
#define IFT_LOOP 0x18
/* sctp_pcb.h */
#if defined(_WIN32)
#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;
uint8_t sconn_family;
#else
uint16_t sconn_family;
#endif
uint16_t sconn_port;
void *sconn_addr;
};
typedef void *(*start_routine_t)(void *);
extern int
sctp_userspace_thread_create(userland_thread_t *thread, start_routine_t start_routine);
void
sctp_userspace_set_threadname(const char *name);
/*
* SCTP protocol specific mbuf flags.
*/
#define M_NOTIFICATION M_PROTO5 /* SCTP notification */
/*
* 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 inpcb *)(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(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__native_client__)
/* stolen from /usr/include/sys/socket.h */
#define CMSG_ALIGN(n) _ALIGN(n)
#elif defined(__NetBSD__)
#define CMSG_ALIGN(n) (((n) + __ALIGNBYTES) & ~__ALIGNBYTES)
#elif defined(__APPLE__)
#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__ , __func__); \
} 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(__linux__)
#if !defined(TAILQ_FOREACH_SAFE)
#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = ((head)->tqh_first); \
(var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
(var) = (tvar))
#endif
#if !defined(LIST_FOREACH_SAFE)
#define LIST_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = ((head)->lh_first); \
(var) && ((tvar) = LIST_NEXT((var), field), 1); \
(var) = (tvar))
#endif
#endif
#if defined(__DragonFly__)
#define TAILQ_FOREACH_SAFE TAILQ_FOREACH_MUTABLE
#define LIST_FOREACH_SAFE LIST_FOREACH_MUTABLE
#endif
#if defined(__native_client__)
#define timercmp(tvp, uvp, cmp) \
(((tvp)->tv_sec == (uvp)->tv_sec) ? \
((tvp)->tv_usec cmp (uvp)->tv_usec) : \
((tvp)->tv_sec cmp (uvp)->tv_sec))
#endif
#define SCTP_IS_LISTENING(inp) ((inp->sctp_flags & SCTP_PCB_FLAGS_ACCEPTING) != 0)
#if defined(__APPLE__) || defined(__DragonFly__) || defined(__linux__) || defined(__native_client__) || defined(__NetBSD__) || defined(_WIN32) || defined(__Fuchsia__)
int
timingsafe_bcmp(const void *, const void *, size_t);
#endif
#endif
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