1 /*-
2 * Copyright (c) 2006-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved.
5 * Copyright (c) 2008-2011, by Brad Penoff. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * a) Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * b) Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the distribution.
16 *
17 * c) Neither the name of Cisco Systems, Inc. nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #ifndef __sctp_os_userspace_h__
35 #define __sctp_os_userspace_h__
36 /*
37 * Userspace includes
38 * All the opt_xxx.h files are placed in the kernel build directory.
39 * We will place them in userspace stack build directory.
40 */
41
42 #include <errno.h>
43
44 #if defined(__Userspace_os_Windows)
45 #include <winsock2.h>
46 #include <ws2tcpip.h>
47 #include <iphlpapi.h>
48 #include <Mswsock.h>
49 #include <Windows.h>
50 #include "user_environment.h"
51 typedef CRITICAL_SECTION userland_mutex_t;
52 #if WINVER < 0x0600
53 enum {
54 C_SIGNAL = 0,
55 C_BROADCAST = 1,
56 C_MAX_EVENTS = 2
57 };
58 typedef struct
59 {
60 u_int waiters_count;
61 CRITICAL_SECTION waiters_count_lock;
62 HANDLE events_[C_MAX_EVENTS];
63 } userland_cond_t;
64 void InitializeXPConditionVariable(userland_cond_t *);
65 void DeleteXPConditionVariable(userland_cond_t *);
66 int SleepXPConditionVariable(userland_cond_t *, userland_mutex_t *);
67 void WakeAllXPConditionVariable(userland_cond_t *);
68 #define InitializeConditionVariable(cond) InitializeXPConditionVariable(cond)
69 #define DeleteConditionVariable(cond) DeleteXPConditionVariable(cond)
70 #define SleepConditionVariableCS(cond, mtx, time) SleepXPConditionVariable(cond, mtx)
71 #define WakeAllConditionVariable(cond) WakeAllXPConditionVariable(cond)
72 #else
73 #define DeleteConditionVariable(cond)
74 typedef CONDITION_VARIABLE userland_cond_t;
75 #endif
76 typedef HANDLE userland_thread_t;
77 #define ADDRESS_FAMILY unsigned __int8
78 #define IPVERSION 4
79 #define MAXTTL 255
80 /* VS2010 comes with stdint.h */
81 #if _MSC_VER >= 1600
82 #include <stdint.h>
83 #else
84 #define uint64_t unsigned __int64
85 #define uint32_t unsigned __int32
86 #define int32_t __int32
87 #define uint16_t unsigned __int16
88 #define int16_t __int16
89 #define uint8_t unsigned __int8
90 #define int8_t __int8
91 #endif
92 #ifndef _SIZE_T_DEFINED
93 #define size_t __int32
94 #endif
95 #define u_long unsigned __int64
96 #define u_int unsigned __int32
97 #define u_int32_t unsigned __int32
98 #define u_int16_t unsigned __int16
99 #define u_int8_t unsigned __int8
100 #define u_char unsigned char
101 #define n_short unsigned __int16
102 #define u_short unsigned __int16
103 #define n_time unsigned __int32
104 #define sa_family_t unsigned __int8
105 #define ssize_t __int64
106 #define IFNAMSIZ 64
107 #define __func__ __FUNCTION__
108
109 #ifndef EWOULDBLOCK
110 #define EWOULDBLOCK WSAEWOULDBLOCK
111 #endif
112 #ifndef EINPROGRESS
113 #define EINPROGRESS WSAEINPROGRESS
114 #endif
115 #ifndef EALREADY
116 #define EALREADY WSAEALREADY
117 #endif
118 #ifndef ENOTSOCK
119 #define ENOTSOCK WSAENOTSOCK
120 #endif
121 #ifndef EDESTADDRREQ
122 #define EDESTADDRREQ WSAEDESTADDRREQ
123 #endif
124 #ifndef EMSGSIZE
125 #define EMSGSIZE WSAEMSGSIZE
126 #endif
127 #ifndef EPROTOTYPE
128 #define EPROTOTYPE WSAEPROTOTYPE
129 #endif
130 #ifndef ENOPROTOOPT
131 #define ENOPROTOOPT WSAENOPROTOOPT
132 #endif
133 #ifndef EPROTONOSUPPORT
134 #define EPROTONOSUPPORT WSAEPROTONOSUPPORT
135 #endif
136 #ifndef ESOCKTNOSUPPORT
137 #define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
138 #endif
139 #ifndef EOPNOTSUPP
140 #define EOPNOTSUPP WSAEOPNOTSUPP
141 #endif
142 #ifndef ENOTSUP
143 #define ENOTSUP WSAEOPNOTSUPP
144 #endif
145 #ifndef EPFNOSUPPORT
146 #define EPFNOSUPPORT WSAEPFNOSUPPORT
147 #endif
148 #ifndef EAFNOSUPPORT
149 #define EAFNOSUPPORT WSAEAFNOSUPPORT
150 #endif
151 #ifndef EADDRINUSE
152 #define EADDRINUSE WSAEADDRINUSE
153 #endif
154 #ifndef EADDRNOTAVAIL
155 #define EADDRNOTAVAIL WSAEADDRNOTAVAIL
156 #endif
157 #ifndef ENETDOWN
158 #define ENETDOWN WSAENETDOWN
159 #endif
160 #ifndef ENETUNREACH
161 #define ENETUNREACH WSAENETUNREACH
162 #endif
163 #ifndef ENETRESET
164 #define ENETRESET WSAENETRESET
165 #endif
166 #ifndef ECONNABORTED
167 #define ECONNABORTED WSAECONNABORTED
168 #endif
169 #ifndef ECONNRESET
170 #define ECONNRESET WSAECONNRESET
171 #endif
172 #ifndef ENOBUFS
173 #define ENOBUFS WSAENOBUFS
174 #endif
175 #ifndef EISCONN
176 #define EISCONN WSAEISCONN
177 #endif
178 #ifndef ENOTCONN
179 #define ENOTCONN WSAENOTCONN
180 #endif
181 #ifndef ESHUTDOWN
182 #define ESHUTDOWN WSAESHUTDOWN
183 #endif
184 #ifndef ETOOMANYREFS
185 #define ETOOMANYREFS WSAETOOMANYREFS
186 #endif
187 #ifndef ETIMEDOUT
188 #define ETIMEDOUT WSAETIMEDOUT
189 #endif
190 #ifndef ECONNREFUSED
191 #define ECONNREFUSED WSAECONNREFUSED
192 #endif
193 #ifndef ELOOP
194 #define ELOOP WSAELOOP
195 #endif
196 #ifndef EHOSTDOWN
197 #define EHOSTDOWN WSAEHOSTDOWN
198 #endif
199 #ifndef EHOSTUNREACH
200 #define EHOSTUNREACH WSAEHOSTUNREACH
201 #endif
202 #ifndef EPROCLIM
203 #define EPROCLIM WSAEPROCLIM
204 #endif
205 #ifndef EUSERS
206 #define EUSERS WSAEUSERS
207 #endif
208 #ifndef EDQUOT
209 #define EDQUOT WSAEDQUOT
210 #endif
211 #ifndef ESTALE
212 #define ESTALE WSAESTALE
213 #endif
214 #ifndef EREMOTE
215 #define EREMOTE WSAEREMOTE
216 #endif
217
218 typedef char* caddr_t;
219
220 #define bzero(buf, len) memset(buf, 0, len)
221 #define bcopy(srcKey, dstKey, len) memcpy(dstKey, srcKey, len)
222 #define snprintf(data, size, format, ...) _snprintf_s(data, size, _TRUNCATE, format, __VA_ARGS__)
223 #define inline __inline
224 #define __inline__ __inline
225 #define random() rand()
226 #define srandom(s) srand(s)
227 #define MSG_EOR 0x8 /* data completes record */
228 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
229
230 #ifdef CMSG_DATA
231 #undef CMSG_DATA
232 #endif
233 /*
234 * The following definitions should apply iff WINVER < 0x0600
235 * but that check doesn't work in all cases. So be more pedantic...
236 */
237 #define CMSG_DATA(x) WSA_CMSG_DATA(x)
238 #define CMSG_ALIGN(x) WSA_CMSGDATA_ALIGN(x)
239 #ifndef CMSG_FIRSTHDR
240 #define CMSG_FIRSTHDR(x) WSA_CMSG_FIRSTHDR(x)
241 #endif
242 #ifndef CMSG_NXTHDR
243 #define CMSG_NXTHDR(x, y) WSA_CMSG_NXTHDR(x, y)
244 #endif
245 #ifndef CMSG_SPACE
246 #define CMSG_SPACE(x) WSA_CMSG_SPACE(x)
247 #endif
248 #ifndef CMSG_LEN
249 #define CMSG_LEN(x) WSA_CMSG_LEN(x)
250 #endif
251
252 /**** from sctp_os_windows.h ***************/
253 #define SCTP_IFN_IS_IFT_LOOP(ifn) ((ifn)->ifn_type == IFT_LOOP)
254 #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)
255
256 /*
257 * Access to IFN's to help with src-addr-selection
258 */
259 /* This could return VOID if the index works but for BSD we provide both. */
260 #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) \
261 ((ro)->ro_rt != NULL ? (ro)->ro_rt->rt_ifp : NULL)
262 #define SCTP_ROUTE_HAS_VALID_IFN(ro) \
263 ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
264 /******************************************/
265
266 #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) 1 /* compiles... TODO use routing socket to determine */
267
268 #define timeradd(tvp, uvp, vvp) \
269 do { \
270 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
271 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
272 if ((vvp)->tv_usec >= 1000000) { \
273 (vvp)->tv_sec++; \
274 (vvp)->tv_usec -= 1000000; \
275 } \
276 } while (0)
277
278 #define timersub(tvp, uvp, vvp) \
279 do { \
280 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
281 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
282 if ((vvp)->tv_usec < 0) { \
283 (vvp)->tv_sec--; \
284 (vvp)->tv_usec += 1000000; \
285 } \
286 } while (0)
287
288 #define BIG_ENDIAN 1
289 #define LITTLE_ENDIAN 0
290 #ifdef WORDS_BIGENDIAN
291 #define BYTE_ORDER BIG_ENDIAN
292 #else
293 #define BYTE_ORDER LITTLE_ENDIAN
294 #endif
295
296 struct iovec {
297 ULONG len;
298 CHAR FAR *buf;
299 };
300
301 #define iov_base buf
302 #define iov_len len
303
304 struct ifa_msghdr {
305 unsigned __int16 ifam_msglen;
306 unsigned char ifam_version;
307 unsigned char ifam_type;
308 __int32 ifam_addrs;
309 __int32 ifam_flags;
310 unsigned __int16 ifam_index;
311 __int32 ifam_metric;
312 };
313
314 struct ifdevmtu {
315 int ifdm_current;
316 int ifdm_min;
317 int ifdm_max;
318 };
319
320 struct ifkpi {
321 unsigned int ifk_module_id;
322 unsigned int ifk_type;
323 union {
324 void *ifk_ptr;
325 int ifk_value;
326 } ifk_data;
327 };
328
329 struct ifreq {
330 char ifr_name[16];
331 union {
332 struct sockaddr ifru_addr;
333 struct sockaddr ifru_dstaddr;
334 struct sockaddr ifru_broadaddr;
335 short ifru_flags;
336 int ifru_metric;
337 int ifru_mtu;
338 int ifru_phys;
339 int ifru_media;
340 int ifru_intval;
341 char* ifru_data;
342 struct ifdevmtu ifru_devmtu;
343 struct ifkpi ifru_kpi;
344 unsigned __int32 ifru_wake_flags;
345 } ifr_ifru;
346 #define ifr_addr ifr_ifru.ifru_addr
347 #define ifr_dstaddr ifr_ifru.ifru_dstaddr
348 #define ifr_broadaddr ifr_ifru.ifru_broadaddr
349 #define ifr_flags ifr_ifru.ifru_flags[0]
350 #define ifr_prevflags ifr_ifru.ifru_flags[1]
351 #define ifr_metric ifr_ifru.ifru_metric
352 #define ifr_mtu ifr_ifru.ifru_mtu
353 #define ifr_phys ifr_ifru.ifru_phys
354 #define ifr_media ifr_ifru.ifru_media
355 #define ifr_data ifr_ifru.ifru_data
356 #define ifr_devmtu ifr_ifru.ifru_devmtu
357 #define ifr_intval ifr_ifru.ifru_intval
358 #define ifr_kpi ifr_ifru.ifru_kpi
359 #define ifr_wake_flags ifr_ifru.ifru_wake_flags
360 };
361
362 /*#include <packon.h>
363 #pragma pack(push, 1)*/
364 struct ip {
365 u_char ip_hl:4, ip_v:4;
366 u_char ip_tos;
367 u_short ip_len;
368 u_short ip_id;
369 u_short ip_off;
370 #define IP_RP 0x8000
371 #define IP_DF 0x4000
372 #define IP_MF 0x2000
373 #define IP_OFFMASK 0x1fff
374 u_char ip_ttl;
375 u_char ip_p;
376 u_short ip_sum;
377 struct in_addr ip_src, ip_dst;
378 };
379
380 struct ifaddrs {
381 struct ifaddrs *ifa_next;
382 char *ifa_name;
383 unsigned int ifa_flags;
384 struct sockaddr *ifa_addr;
385 struct sockaddr *ifa_netmask;
386 struct sockaddr *ifa_dstaddr;
387 void *ifa_data;
388 };
389
390 struct udphdr {
391 unsigned __int16 uh_sport;
392 unsigned __int16 uh_dport;
393 unsigned __int16 uh_ulen;
394 unsigned __int16 uh_sum;
395 };
396
397 int Win_getifaddrs(struct ifaddrs**);
398 #define getifaddrs(interfaces) (int)Win_getifaddrs(interfaces)
399 int win_if_nametoindex(const char *);
400 #define if_nametoindex(x) win_if_nametoindex(x)
401
402 #else /* !defined(Userspace_os_Windows) */
403 #include <sys/cdefs.h> /* needed? added from old __FreeBSD__ */
404 #include <sys/socket.h>
405 #if defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_Linux) || defined(__Userspace_os_NetBSD) || defined(__Userspace_os_OpenBSD)
406 #include <pthread.h>
407 #endif
408 typedef pthread_mutex_t userland_mutex_t;
409 typedef pthread_cond_t userland_cond_t;
410 typedef pthread_t userland_thread_t;
411 #endif
412
413 #define mtx_lock(arg1)
414 #define mtx_unlock(arg1)
415 #define mtx_assert(arg1,arg2)
416 #define MA_OWNED 7 /* sys/mutex.h typically on FreeBSD */
417 #if !defined(__Userspace_os_FreeBSD)
418 struct mtx {int dummy;};
419 #if !defined(__Userspace_os_NetBSD)
420 struct selinfo {int dummy;};
421 #endif
422 struct sx {int dummy;};
423 #endif
424
425 #include <stdio.h>
426 #include <string.h>
427 /* #include <sys/param.h> in FreeBSD defines MSIZE */
428 /* #include <sys/ktr.h> */
429 /* #include <sys/systm.h> */
430 #if defined(__Userspace_os_Windows)
431 #include <user_queue.h>
432 #else
433 #include <sys/queue.h>
434 #endif
435 #include <user_malloc.h>
436 /* #include <sys/kernel.h> */
437 /* #include <sys/sysctl.h> */
438 /* #include <sys/protosw.h> */
439 /* on FreeBSD, this results in a redefintion of SOCK(BUF)_(UN)LOCK and
440 * uknown type of struct mtx for sb_mtx in struct sockbuf */
441 #include "user_socketvar.h" /* MALLOC_DECLARE's M_PCB. Replacement for sys/socketvar.h */
442 /* #include <sys/jail.h> */
443 /* #include <sys/sysctl.h> */
444 #include <user_environment.h>
445 #include <user_atomic.h>
446 #include <user_mbuf.h>
447 /* #include <sys/uio.h> */
448 /* #include <sys/lock.h> */
449 #if defined(__FreeBSD__) && __FreeBSD_version > 602000
450 #include <sys/rwlock.h>
451 #endif
452 /* #include <sys/kthread.h> */
453 #if defined(__FreeBSD__) && __FreeBSD_version > 602000
454 #include <sys/priv.h>
455 #endif
456 /* #include <sys/random.h> */
457 /* #include <sys/limits.h> */
458 /* #include <machine/cpu.h> */
459
460 #if defined(__Userspace_os_Darwin)
461 /* was a 0 byte file. needed for structs if_data(64) and net_event_data */
462 #include <net/if_var.h>
463 #endif
464 #if defined(__Userspace_os_FreeBSD)
465 #include <net/if_types.h>
466 /* #include <net/if_var.h> was a 0 byte file. causes struct mtx redefinition */
467 #endif
468 /* OOTB only - dummy route used at the moment. should we port route to
469 * userspace as well? */
470 /* on FreeBSD, this results in a redefintion of struct route */
471 /* #include <net/route.h> */
472 #if !defined(__Userspace_os_Windows)
473 #include <net/if.h>
474 #include <netinet/in.h>
475 #include <netinet/in_systm.h>
476 #include <netinet/ip.h>
477 #endif
478 #if defined INET
479 #if defined(__Userspace_os_Windows)
480 #include <user_ip_icmp.h>
481 #else
482 #include <netinet/ip_icmp.h>
483 #endif
484 #endif
485 /* #include <netinet/in_pcb.h> ported to userspace */
486 #include <user_inpcb.h>
487
488 /* for getifaddrs */
489 #include <sys/types.h>
490 #if !defined(__Userspace_os_Windows)
491 #if defined(INET) || defined(INET6)
492 #include <ifaddrs.h>
493 #endif
494
495 /* for ioctl */
496 #include <sys/ioctl.h>
497
498 /* for close, etc. */
499 #include <unistd.h>
500 #endif
501
502 /* lots of errno's used and needed in userspace */
503
504 /* for offsetof */
505 #include <stddef.h>
506
507 #if defined(SCTP_PROCESS_LEVEL_LOCKS) && !defined(__Userspace_os_Windows)
508 /* for pthread_mutex_lock, pthread_mutex_unlock, etc. */
509 #include <pthread.h>
510 #endif
511
512 #ifdef IPSEC
513 #include <netipsec/ipsec.h>
514 #include <netipsec/key.h>
515 #endif /* IPSEC */
516
517 #ifdef INET6
518 #if defined(__Userspace_os_FreeBSD)
519 #include <sys/domain.h>
520 #endif
521 #ifdef IPSEC
522 #include <netipsec/ipsec6.h>
523 #endif
524 #if !defined(__Userspace_os_Windows)
525 #include <netinet/ip6.h>
526 #include <netinet/icmp6.h>
527 #endif
528 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_Linux) || defined(__Userspace_os_NetBSD) || defined(__Userspace_os_OpenBSD) || defined(__Userspace_os_Windows)
529 #include "user_ip6_var.h"
530 #else
531 #include <netinet6/ip6_var.h>
532 #endif
533 #if defined(__Userspace_os_FreeBSD)
534 #include <netinet6/in6_pcb.h>
535 #include <netinet6/ip6protosw.h>
536 /* #include <netinet6/nd6.h> was a 0 byte file */
537 #include <netinet6/scope6_var.h>
538 #endif
539 #endif /* INET6 */
540
541 #if defined(HAVE_SCTP_PEELOFF_SOCKOPT)
542 #include <sys/file.h>
543 #include <sys/filedesc.h>
544 #endif
545
546 #include "netinet/sctp_sha1.h"
547
548 #if __FreeBSD_version >= 700000
549 #include <netinet/ip_options.h>
550 #endif
551
552 #define SCTP_PRINTF(...) \
553 if (SCTP_BASE_VAR(debug_printf)) { \
554 SCTP_BASE_VAR(debug_printf)(__VA_ARGS__); \
555 }
556
557 #if defined(__FreeBSD__)
558 #ifndef in6pcb
559 #define in6pcb inpcb
560 #endif
561 #endif
562 /* Declare all the malloc names for all the various mallocs */
563 MALLOC_DECLARE(SCTP_M_MAP);
564 MALLOC_DECLARE(SCTP_M_STRMI);
565 MALLOC_DECLARE(SCTP_M_STRMO);
566 MALLOC_DECLARE(SCTP_M_ASC_ADDR);
567 MALLOC_DECLARE(SCTP_M_ASC_IT);
568 MALLOC_DECLARE(SCTP_M_AUTH_CL);
569 MALLOC_DECLARE(SCTP_M_AUTH_KY);
570 MALLOC_DECLARE(SCTP_M_AUTH_HL);
571 MALLOC_DECLARE(SCTP_M_AUTH_IF);
572 MALLOC_DECLARE(SCTP_M_STRESET);
573 MALLOC_DECLARE(SCTP_M_CMSG);
574 MALLOC_DECLARE(SCTP_M_COPYAL);
575 MALLOC_DECLARE(SCTP_M_VRF);
576 MALLOC_DECLARE(SCTP_M_IFA);
577 MALLOC_DECLARE(SCTP_M_IFN);
578 MALLOC_DECLARE(SCTP_M_TIMW);
579 MALLOC_DECLARE(SCTP_M_MVRF);
580 MALLOC_DECLARE(SCTP_M_ITER);
581 MALLOC_DECLARE(SCTP_M_SOCKOPT);
582
583 #if defined(SCTP_LOCAL_TRACE_BUF)
584
585 #define SCTP_GET_CYCLECOUNT get_cyclecount()
586 #define SCTP_CTR6 sctp_log_trace
587
588 #else
589 #define SCTP_CTR6 CTR6
590 #endif
591
592 /* Empty ktr statement for _Userspace__ (similar to what is done for mac) */
593 #define CTR6(m, d, p1, p2, p3, p4, p5, p6)
594
595
596
597 #define SCTP_BASE_INFO(__m) system_base_info.sctppcbinfo.__m
598 #define SCTP_BASE_STATS system_base_info.sctpstat
599 #define SCTP_BASE_STAT(__m) system_base_info.sctpstat.__m
600 #define SCTP_BASE_SYSCTL(__m) system_base_info.sctpsysctl.__m
601 #define SCTP_BASE_VAR(__m) system_base_info.__m
602
603 /*
604 *
605 */
606 #if !defined(__Userspace_os_Darwin)
607 #define USER_ADDR_NULL (NULL) /* FIX ME: temp */
608 #endif
609
610 #if defined(SCTP_DEBUG)
611 #include <netinet/sctp_constants.h>
612 #define SCTPDBG(level, ...) \
613 { \
614 do { \
615 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level) { \
616 SCTP_PRINTF(__VA_ARGS__); \
617 } \
618 } while (0); \
619 }
620 #define SCTPDBG_ADDR(level, addr) \
621 { \
622 do { \
623 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) { \
624 sctp_print_address(addr); \
625 } \
626 } while (0); \
627 }
628 #else
629 #define SCTPDBG(level, ...)
630 #define SCTPDBG_ADDR(level, addr)
631 #endif
632
633 #ifdef SCTP_LTRACE_CHUNKS
634 #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)
635 #else
636 #define SCTP_LTRACE_CHK(a, b, c, d)
637 #endif
638
639 #ifdef SCTP_LTRACE_ERRORS
640 #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err) \
641 if (sctp_logging_level & SCTP_LTRACE_ERROR_ENABLE) \
642 SCTP_PRINTF("mbuf:%p inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
643 (void *)m, (void *)inp, (void *)stcb, (void *)net, file, __LINE__, err);
644 #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err) \
645 if (sctp_logging_level & SCTP_LTRACE_ERROR_ENABLE) \
646 SCTP_PRINTF("inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
647 (void *)inp, (void *)stcb, (void *)net, file, __LINE__, err);
648 #else
649 #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err)
650 #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err)
651 #endif
652
653
654 /*
655 * Local address and interface list handling
656 */
657 #define SCTP_MAX_VRF_ID 0
658 #define SCTP_SIZE_OF_VRF_HASH 3
659 #define SCTP_IFNAMSIZ IFNAMSIZ
660 #define SCTP_DEFAULT_VRFID 0
661 #define SCTP_VRF_ADDR_HASH_SIZE 16
662 #define SCTP_VRF_IFN_HASH_SIZE 3
663 #define SCTP_INIT_VRF_TABLEID(vrf)
664
665 #if !defined(__Userspace_os_Windows)
666 #define SCTP_IFN_IS_IFT_LOOP(ifn) (strncmp((ifn)->ifn_name, "lo", 2) == 0)
667 /* BSD definition */
668 /* #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) */
669 /* only used in IPv6 scenario, which isn't supported yet */
670 #define SCTP_ROUTE_IS_REAL_LOOP(ro) 0
671
672 /*
673 * Access to IFN's to help with src-addr-selection
674 */
675 /* This could return VOID if the index works but for BSD we provide both. */
676 #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) (void *)ro->ro_rt->rt_ifp
677 #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) 1 /* compiles... TODO use routing socket to determine */
678 #define SCTP_ROUTE_HAS_VALID_IFN(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
679 #endif
680
681 /*
682 * general memory allocation
683 */
684 #define SCTP_MALLOC(var, type, size, name) \
685 do { \
686 MALLOC(var, type, size, name, M_NOWAIT); \
687 } while (0)
688
689 #define SCTP_FREE(var, type) FREE(var, type)
690
691 #define SCTP_MALLOC_SONAME(var, type, size) \
692 do { \
693 MALLOC(var, type, size, M_SONAME, (M_WAITOK | M_ZERO)); \
694 } while (0)
695
696 #define SCTP_FREE_SONAME(var) FREE(var, M_SONAME)
697
698 #define SCTP_PROCESS_STRUCT struct proc *
699
700 /*
701 * zone allocation functions
702 */
703
704
705 #if defined(SCTP_SIMPLE_ALLOCATOR)
706 /*typedef size_t sctp_zone_t;*/
707 #define SCTP_ZONE_INIT(zone, name, size, number) { \
708 zone = size; \
709 }
710
711 /* __Userspace__ SCTP_ZONE_GET: allocate element from the zone */
712 #define SCTP_ZONE_GET(zone, type) \
713 (type *)malloc(zone);
714
715
716 /* __Userspace__ SCTP_ZONE_FREE: free element from the zone */
717 #define SCTP_ZONE_FREE(zone, element) { \
718 free(element); \
719 }
720
721 #define SCTP_ZONE_DESTROY(zone)
722 #else
723 /*__Userspace__
724 Compiling & linking notes: Needs libumem, which has been placed in ./user_lib
725 All userspace header files are in ./user_include. Makefile will need the
726 following.
727 CFLAGS = -I./ -Wall
728 LDFLAGS = -L./user_lib -R./user_lib -lumem
729 */
730 #include "user_include/umem.h"
731
732 /* __Userspace__ SCTP_ZONE_INIT: initialize the zone */
733 /*
734 __Userspace__
735 No equivalent function to uma_zone_set_max added yet. (See SCTP_ZONE_INIT in sctp_os_bsd.h
736 for reference). It may not be required as mentioned in
737 http://nixdoc.net/man-pages/FreeBSD/uma_zalloc.9.html that
738 max limits may not enforced on systems with more than one CPU.
739 */
740 #define SCTP_ZONE_INIT(zone, name, size, number) { \
741 zone = umem_cache_create(name, size, 0, NULL, NULL, NULL, NULL, NULL, 0); \
742 }
743
744 /* __Userspace__ SCTP_ZONE_GET: allocate element from the zone */
745 #define SCTP_ZONE_GET(zone, type) \
746 (type *)umem_cache_alloc(zone, UMEM_DEFAULT);
747
748
749 /* __Userspace__ SCTP_ZONE_FREE: free element from the zone */
750 #define SCTP_ZONE_FREE(zone, element) \
751 umem_cache_free(zone, element);
752
753
754 /* __Userspace__ SCTP_ZONE_DESTROY: destroy the zone */
755 #define SCTP_ZONE_DESTROY(zone) \
756 umem_cache_destroy(zone);
757 #endif
758
759 /* global struct ifaddrs used in sctp_init_ifns_for_vrf getifaddrs call
760 * but references to fields are needed to persist as the vrf is queried.
761 * getifaddrs allocates memory that needs to be freed with a freeifaddrs
762 * call; this global is used to call freeifaddrs upon in sctp_pcb_finish
763 */
764 extern struct ifaddrs *g_interfaces;
765
766
767 /*
768 * __Userspace__ Defining sctp_hashinit_flags() and sctp_hashdestroy() for userland.
769 */
770 void *sctp_hashinit_flags(int elements, struct malloc_type *type,
771 u_long *hashmask, int flags);
772 void
773 sctp_hashdestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask);
774
775 void
776 sctp_hashfreedestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask);
777
778
779 #define HASH_NOWAIT 0x00000001
780 #define HASH_WAITOK 0x00000002
781
782 /* M_PCB is MALLOC_DECLARE'd in sys/socketvar.h */
783 #define SCTP_HASH_INIT(size, hashmark) sctp_hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT)
784
785 #define SCTP_HASH_FREE(table, hashmark) sctp_hashdestroy(table, M_PCB, hashmark)
786
787 #define SCTP_HASH_FREE_DESTROY(table, hashmark) sctp_hashfreedestroy(table, M_PCB, hashmark)
788 #define SCTP_M_COPYM m_copym
789
790 /*
791 * timers
792 */
793 /* __Userspace__
794 * user_sctp_callout.h has typedef struct sctp_callout sctp_os_timer_t;
795 * which is used in the timer related functions such as
796 * SCTP_OS_TIMER_INIT etc.
797 */
798 #include <netinet/sctp_callout.h>
799
800 /* __Userspace__ Creating a receive thread */
801 #include <user_recv_thread.h>
802
803 /*__Userspace__ defining KTR_SUBSYS 1 as done in sctp_os_macosx.h */
804 #define KTR_SUBSYS 1
805
806 #define sctp_get_tick_count() (ticks)
807
808 /* The packed define for 64 bit platforms */
809 #if !defined(__Userspace_os_Windows)
810 #define SCTP_PACKED __attribute__((packed))
811 #define SCTP_UNUSED __attribute__((unused))
812 #else
813 #define SCTP_PACKED
814 #define SCTP_UNUSED
815 #endif
816
817 /*
818 * Functions
819 */
820 /* Mbuf manipulation and access macros */
821 #define SCTP_BUF_LEN(m) (m->m_len)
822 #define SCTP_BUF_NEXT(m) (m->m_next)
823 #define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt)
824 #define SCTP_BUF_RESV_UF(m, size) m->m_data += size
825 #define SCTP_BUF_AT(m, size) m->m_data + size
826 #define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT)
827 #define SCTP_BUF_EXTEND_SIZE(m) (m->m_ext.ext_size)
828 #define SCTP_BUF_TYPE(m) (m->m_type)
829 #define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif)
830 #define SCTP_BUF_PREPEND M_PREPEND
831
832 #define SCTP_ALIGN_TO_END(m, len) if(m->m_flags & M_PKTHDR) { \
833 MH_ALIGN(m, len); \
834 } else if ((m->m_flags & M_EXT) == 0) { \
835 M_ALIGN(m, len); \
836 }
837
838 /* We make it so if you have up to 4 threads
839 * writting based on the default size of
840 * the packet log 65 k, that would be
841 * 4 16k packets before we would hit
842 * a problem.
843 */
844 #define SCTP_PKTLOG_WRITERS_NEED_LOCK 3
845
846
847 /*
848 * routes, output, etc.
849 */
850
851 typedef struct sctp_route sctp_route_t;
852 typedef struct sctp_rtentry sctp_rtentry_t;
853
sctp_userspace_rtalloc(sctp_route_t * ro)854 static inline void sctp_userspace_rtalloc(sctp_route_t *ro)
855 {
856 if (ro->ro_rt != NULL) {
857 ro->ro_rt->rt_refcnt++;
858 return;
859 }
860
861 ro->ro_rt = (sctp_rtentry_t *) malloc(sizeof(sctp_rtentry_t));
862 if (ro->ro_rt == NULL)
863 return;
864
865 /* initialize */
866 memset(ro->ro_rt, 0, sizeof(sctp_rtentry_t));
867 ro->ro_rt->rt_refcnt = 1;
868
869 /* set MTU */
870 /* TODO set this based on the ro->ro_dst, looking up MTU with routing socket */
871 #if 0
872 if (userspace_rawroute == -1) {
873 userspace_rawroute = socket(AF_ROUTE, SOCK_RAW, 0);
874 if (userspace_rawroute == -1)
875 return;
876 }
877 #endif
878 ro->ro_rt->rt_rmx.rmx_mtu = 1500; /* FIXME temporary solution */
879
880 /* TODO enable the ability to obtain interface index of route for
881 * SCTP_GET_IF_INDEX_FROM_ROUTE macro.
882 */
883 }
884 #define SCTP_RTALLOC(ro, vrf_id) sctp_userspace_rtalloc((sctp_route_t *)ro)
885
886 /* dummy rtfree needed once user_route.h is included */
sctp_userspace_rtfree(sctp_rtentry_t * rt)887 static inline void sctp_userspace_rtfree(sctp_rtentry_t *rt)
888 {
889 if(rt == NULL) {
890 return;
891 }
892 if(--rt->rt_refcnt > 0) {
893 return;
894 }
895 free(rt);
896 rt = NULL;
897 }
898 #define rtfree(arg1) sctp_userspace_rtfree(arg1)
899
900
901 /*************************/
902 /* MTU */
903 /*************************/
904 int sctp_userspace_get_mtu_from_ifn(uint32_t if_index, int af);
905
906 #define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, af) sctp_userspace_get_mtu_from_ifn(ifn_index, af)
907
908 #define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((rt != NULL) ? rt->rt_rmx.rmx_mtu : 0)
909
910 #define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn) sctp_userspace_get_mtu_from_ifn(if_nametoindex(((struct ifaddrs *) (sctp_ifn))->ifa_name), AF_INET)
911
912 #define SCTP_SET_MTU_OF_ROUTE(sa, rt, mtu) do { \
913 if (rt != NULL) \
914 rt->rt_rmx.rmx_mtu = mtu; \
915 } while(0)
916
917 /* (de-)register interface event notifications */
918 #define SCTP_REGISTER_INTERFACE(ifhandle, af)
919 #define SCTP_DEREGISTER_INTERFACE(ifhandle, af)
920
921
922 /*************************/
923 /* These are for logging */
924 /*************************/
925 /* return the base ext data pointer */
926 #define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf)
927 /* return the refcnt of the data pointer */
928 #define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ref_cnt)
929 /* return any buffer related flags, this is
930 * used beyond logging for apple only.
931 */
932 #define SCTP_BUF_GET_FLAGS(m) (m->m_flags)
933
934 /* For BSD this just accesses the M_PKTHDR length
935 * so it operates on an mbuf with hdr flag. Other
936 * O/S's may have seperate packet header and mbuf
937 * chain pointers.. thus the macro.
938 */
939 #define SCTP_HEADER_TO_CHAIN(m) (m)
940 #define SCTP_DETACH_HEADER_FROM_CHAIN(m)
941 #define SCTP_HEADER_LEN(m) ((m)->m_pkthdr.len)
942 #define SCTP_GET_HEADER_FOR_OUTPUT(o_pak) 0
943 #define SCTP_RELEASE_HEADER(m)
944 #define SCTP_RELEASE_PKT(m) sctp_m_freem(m)
945 /* UDP __Userspace__ - dummy definition */
946 #define SCTP_ENABLE_UDP_CSUM(m) m=m
947 /* BSD definition */
948 /* #define SCTP_ENABLE_UDP_CSUM(m) do { \ */
949 /* m->m_pkthdr.csum_flags = CSUM_UDP; \ */
950 /* m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); \ */
951 /* } while (0) */
952
953 #define SCTP_GET_PKT_VRFID(m, vrf_id) ((vrf_id = SCTP_DEFAULT_VRFID) != SCTP_DEFAULT_VRFID)
954
955
956
957 /* Attach the chain of data into the sendable packet. */
958 #define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \
959 pak = m; \
960 pak->m_pkthdr.len = packet_length; \
961 } while(0)
962
963 /* Other m_pkthdr type things */
964 /* FIXME need real definitions */
965 #define SCTP_IS_IT_BROADCAST(dst, m) 0
966 /* OOTB only #define SCTP_IS_IT_BROADCAST(dst, m) ((m->m_flags & M_PKTHDR) ? in_broadcast(dst, m->m_pkthdr.rcvif) : 0) BSD def */
967 #define SCTP_IS_IT_LOOPBACK(m) 0
968 /* 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 */
969
970
971 /* This converts any input packet header
972 * into the chain of data holders, for BSD
973 * its a NOP.
974 */
975
976 /* get the v6 hop limit */
977 #define SCTP_GET_HLIM(inp, ro) 128 /* As done for __Windows__ */
978 #define IPv6_HOP_LIMIT 128
979
980 /* is the endpoint v6only? */
981 #define SCTP_IPV6_V6ONLY(inp) (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY)
982 /* is the socket non-blocking? */
983 #define SCTP_SO_IS_NBIO(so) ((so)->so_state & SS_NBIO)
984 #define SCTP_SET_SO_NBIO(so) ((so)->so_state |= SS_NBIO)
985 #define SCTP_CLEAR_SO_NBIO(so) ((so)->so_state &= ~SS_NBIO)
986 /* get the socket type */
987 #define SCTP_SO_TYPE(so) ((so)->so_type)
988
989 /* reserve sb space for a socket */
990 #define SCTP_SORESERVE(so, send, recv) soreserve(so, send, recv)
991
992 /* wakeup a socket */
993 #define SCTP_SOWAKEUP(so) wakeup(&(so)->so_timeo, so)
994 /* clear the socket buffer state */
995 #define SCTP_SB_CLEAR(sb) \
996 (sb).sb_cc = 0; \
997 (sb).sb_mb = NULL; \
998 (sb).sb_mbcnt = 0;
999
1000 #define SCTP_SB_LIMIT_RCV(so) so->so_rcv.sb_hiwat
1001 #define SCTP_SB_LIMIT_SND(so) so->so_snd.sb_hiwat
1002
1003 /* Future zero copy wakeup/send function */
1004 #define SCTP_ZERO_COPY_EVENT(inp, so)
1005 /* This is re-pulse ourselves for sendbuf */
1006 #define SCTP_ZERO_COPY_SENDQ_EVENT(inp, so)
1007
1008 #define SCTP_READ_RANDOM(buf, len) read_random(buf, len)
1009
1010 #define SCTP_SHA1_CTX struct sctp_sha1_context
1011 #define SCTP_SHA1_INIT sctp_sha1_init
1012 #define SCTP_SHA1_UPDATE sctp_sha1_update
1013 #define SCTP_SHA1_FINAL(x,y) sctp_sha1_final((unsigned char *)x, y)
1014
1015 /* start OOTB only stuff */
1016 /* TODO IFT_LOOP is in net/if_types.h on Linux */
1017 #define IFT_LOOP 0x18
1018
1019 /* sctp_pcb.h */
1020
1021 #if defined(__Userspace_os_Windows)
1022 #define SHUT_RD 1
1023 #define SHUT_WR 2
1024 #define SHUT_RDWR 3
1025 #endif
1026 #define PRU_FLUSH_RD SHUT_RD
1027 #define PRU_FLUSH_WR SHUT_WR
1028 #define PRU_FLUSH_RDWR SHUT_RDWR
1029
1030 /* netinet/ip_var.h defintions are behind an if defined for _KERNEL on FreeBSD */
1031 #define IP_RAWOUTPUT 0x2
1032
1033
1034 /* end OOTB only stuff */
1035
1036 #define AF_CONN 123
1037 struct sockaddr_conn {
1038 #ifdef HAVE_SCONN_LEN
1039 uint8_t sconn_len;
1040 #endif
1041 uint8_t sconn_family;
1042 uint16_t sconn_port;
1043 void *sconn_addr;
1044 };
1045
1046 /*
1047 * SCTP protocol specific mbuf flags.
1048 */
1049 #define M_NOTIFICATION M_PROTO5 /* SCTP notification */
1050
1051 /*
1052 * IP output routines
1053 */
1054
1055 /* Defining SCTP_IP_ID macro.
1056 In netinet/ip_output.c, we have u_short ip_id;
1057 In netinet/ip_var.h, we have extern u_short ip_id; (enclosed within _KERNEL_)
1058 See static __inline uint16_t ip_newid(void) in netinet/ip_var.h
1059 */
1060 #define SCTP_IP_ID(inp) (ip_id)
1061
1062 /* need sctphdr to get port in SCTP_IP_OUTPUT. sctphdr defined in sctp.h */
1063 #include <netinet/sctp.h>
1064 extern void sctp_userspace_ip_output(int *result, struct mbuf *o_pak,
1065 sctp_route_t *ro, void *stcb,
1066 uint32_t vrf_id);
1067
1068 #define SCTP_IP_OUTPUT(result, o_pak, ro, stcb, vrf_id) sctp_userspace_ip_output(&result, o_pak, ro, stcb, vrf_id);
1069
1070 #if defined(INET6)
1071 extern void sctp_userspace_ip6_output(int *result, struct mbuf *o_pak,
1072 struct route_in6 *ro, void *stcb,
1073 uint32_t vrf_id);
1074 #define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) sctp_userspace_ip6_output(&result, o_pak, ro, stcb, vrf_id);
1075 #endif
1076
1077
1078
1079 #if 0
1080 #define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) \
1081 { \
1082 if (stcb && stcb->sctp_ep) \
1083 result = ip6_output(o_pak, \
1084 ((struct in6pcb *)(stcb->sctp_ep))->in6p_outputopts, \
1085 (ro), 0, 0, ifp, NULL); \
1086 else \
1087 result = ip6_output(o_pak, NULL, (ro), 0, 0, ifp, NULL); \
1088 }
1089 #endif
1090
1091 struct mbuf *
1092 sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header, int how, int allonebuf, int type);
1093
1094
1095 /* with the current included files, this is defined in Linux but
1096 * in FreeBSD, it is behind a _KERNEL in sys/socket.h ...
1097 */
1098 #if defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_OpenBSD)
1099 /* stolen from /usr/include/sys/socket.h */
1100 #define CMSG_ALIGN(n) _ALIGN(n)
1101 #elif defined(__Userspace_os_NetBSD)
1102 #define CMSG_ALIGN(n) (((n) + __ALIGNBYTES) & ~__ALIGNBYTES)
1103 #elif defined(__Userspace_os_Darwin)
1104 #if !defined(__DARWIN_ALIGNBYTES)
1105 #define __DARWIN_ALIGNBYTES (sizeof(__darwin_size_t) - 1)
1106 #endif
1107
1108 #if !defined(__DARWIN_ALIGN)
1109 #define __DARWIN_ALIGN(p) ((__darwin_size_t)((char *)(uintptr_t)(p) + __DARWIN_ALIGNBYTES) &~ __DARWIN_ALIGNBYTES)
1110 #endif
1111
1112 #if !defined(__DARWIN_ALIGNBYTES32)
1113 #define __DARWIN_ALIGNBYTES32 (sizeof(__uint32_t) - 1)
1114 #endif
1115
1116 #if !defined(__DARWIN_ALIGN32)
1117 #define __DARWIN_ALIGN32(p) ((__darwin_size_t)((char *)(uintptr_t)(p) + __DARWIN_ALIGNBYTES32) &~ __DARWIN_ALIGNBYTES32)
1118 #endif
1119 #define CMSG_ALIGN(n) __DARWIN_ALIGN32(n)
1120 #endif
1121 #define I_AM_HERE \
1122 do { \
1123 SCTP_PRINTF("%s:%d at %s\n", __FILE__, __LINE__ , __FUNCTION__); \
1124 } while (0)
1125
1126 #ifndef timevalsub
1127 #define timevalsub(tp1, tp2) \
1128 do { \
1129 (tp1)->tv_sec -= (tp2)->tv_sec; \
1130 (tp1)->tv_usec -= (tp2)->tv_usec; \
1131 if ((tp1)->tv_usec < 0) { \
1132 (tp1)->tv_sec--; \
1133 (tp1)->tv_usec += 1000000; \
1134 } \
1135 } while (0)
1136 #endif
1137
1138 #if defined(__Userspace_os_Linux)
1139 #if !defined(TAILQ_FOREACH_SAFE)
1140 #define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
1141 for ((var) = ((head)->tqh_first); \
1142 (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
1143 (var) = (tvar))
1144 #endif
1145 #if !defined(LIST_FOREACH_SAFE)
1146 #define LIST_FOREACH_SAFE(var, head, field, tvar) \
1147 for ((var) = ((head)->lh_first); \
1148 (var) && ((tvar) = LIST_NEXT((var), field), 1); \
1149 (var) = (tvar))
1150 #endif
1151 #endif
1152 #if defined(__Userspace_os_DragonFly)
1153 #define TAILQ_FOREACH_SAFE TAILQ_FOREACH_MUTABLE
1154 #define LIST_FOREACH_SAFE LIST_FOREACH_MUTABLE
1155 #endif
1156 #endif
1157