netwerk/sctp/src/netinet/sctp_os_userspace.h@97036ab72558
netwerk/sctp/src/netinet/sctp_os_userspace.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rwxr-xr-x
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
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 */
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 */
42 #include <errno.h>
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__
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
218 typedef char* caddr_t;
220 int Win_getifaddrs(struct ifaddrs**);
221 #define getifaddrs(interfaces) (int)Win_getifaddrs(interfaces)
222 int win_if_nametoindex(const char *);
223 #define if_nametoindex(x) win_if_nametoindex(x)
225 #define bzero(buf, len) memset(buf, 0, len)
226 #define bcopy(srcKey, dstKey, len) memcpy(dstKey, srcKey, len)
227 #define snprintf(data, size, format, name) _snprintf_s(data, size, _TRUNCATE, format, name)
228 #define inline __inline
229 #define __inline__ __inline
230 #define random() rand()
231 #define srandom(s) srand(s)
232 #define MSG_EOR 0x8 /* data completes record */
233 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
235 #ifdef CMSG_DATA
236 #undef CMSG_DATA
237 #endif
238 /*
239 * The following definitions should apply iff WINVER < 0x0600
240 * but that check doesn't work in all cases. So be more pedantic...
241 */
242 #define CMSG_DATA(x) WSA_CMSG_DATA(x)
243 #define CMSG_ALIGN(x) WSA_CMSGDATA_ALIGN(x)
244 #ifndef CMSG_FIRSTHDR
245 #define CMSG_FIRSTHDR(x) WSA_CMSG_FIRSTHDR(x)
246 #endif
247 #ifndef CMSG_NXTHDR
248 #define CMSG_NXTHDR(x, y) WSA_CMSG_NXTHDR(x, y)
249 #endif
250 #ifndef CMSG_SPACE
251 #define CMSG_SPACE(x) WSA_CMSG_SPACE(x)
252 #endif
253 #ifndef CMSG_LEN
254 #define CMSG_LEN(x) WSA_CMSG_LEN(x)
255 #endif
257 /**** from sctp_os_windows.h ***************/
258 #define SCTP_IFN_IS_IFT_LOOP(ifn) ((ifn)->ifn_type == IFT_LOOP)
259 #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)
261 /*
262 * Access to IFN's to help with src-addr-selection
263 */
264 /* This could return VOID if the index works but for BSD we provide both. */
265 #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) \
266 ((ro)->ro_rt != NULL ? (ro)->ro_rt->rt_ifp : NULL)
267 #define SCTP_ROUTE_HAS_VALID_IFN(ro) \
268 ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
269 /******************************************/
271 #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) 1 /* compiles... TODO use routing socket to determine */
273 #define timeradd(tvp, uvp, vvp) \
274 do { \
275 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
276 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
277 if ((vvp)->tv_usec >= 1000000) { \
278 (vvp)->tv_sec++; \
279 (vvp)->tv_usec -= 1000000; \
280 } \
281 } while (0)
283 #define timersub(tvp, uvp, vvp) \
284 do { \
285 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
286 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
287 if ((vvp)->tv_usec < 0) { \
288 (vvp)->tv_sec--; \
289 (vvp)->tv_usec += 1000000; \
290 } \
291 } while (0)
293 #define BIG_ENDIAN 1
294 #define LITTLE_ENDIAN 0
295 #ifdef WORDS_BIGENDIAN
296 #define BYTE_ORDER BIG_ENDIAN
297 #else
298 #define BYTE_ORDER LITTLE_ENDIAN
299 #endif
301 struct iovec {
302 ULONG len;
303 CHAR FAR *buf;
304 };
306 #define iov_base buf
307 #define iov_len len
309 struct ifa_msghdr {
310 unsigned __int16 ifam_msglen;
311 unsigned char ifam_version;
312 unsigned char ifam_type;
313 __int32 ifam_addrs;
314 __int32 ifam_flags;
315 unsigned __int16 ifam_index;
316 __int32 ifam_metric;
317 };
319 struct ifdevmtu {
320 int ifdm_current;
321 int ifdm_min;
322 int ifdm_max;
323 };
325 struct ifkpi {
326 unsigned int ifk_module_id;
327 unsigned int ifk_type;
328 union {
329 void *ifk_ptr;
330 int ifk_value;
331 } ifk_data;
332 };
334 struct ifreq {
335 char ifr_name[16];
336 union {
337 struct sockaddr ifru_addr;
338 struct sockaddr ifru_dstaddr;
339 struct sockaddr ifru_broadaddr;
340 short ifru_flags;
341 int ifru_metric;
342 int ifru_mtu;
343 int ifru_phys;
344 int ifru_media;
345 int ifru_intval;
346 char* ifru_data;
347 struct ifdevmtu ifru_devmtu;
348 struct ifkpi ifru_kpi;
349 unsigned __int32 ifru_wake_flags;
350 } ifr_ifru;
351 #define ifr_addr ifr_ifru.ifru_addr
352 #define ifr_dstaddr ifr_ifru.ifru_dstaddr
353 #define ifr_broadaddr ifr_ifru.ifru_broadaddr
354 #define ifr_flags ifr_ifru.ifru_flags[0]
355 #define ifr_prevflags ifr_ifru.ifru_flags[1]
356 #define ifr_metric ifr_ifru.ifru_metric
357 #define ifr_mtu ifr_ifru.ifru_mtu
358 #define ifr_phys ifr_ifru.ifru_phys
359 #define ifr_media ifr_ifru.ifru_media
360 #define ifr_data ifr_ifru.ifru_data
361 #define ifr_devmtu ifr_ifru.ifru_devmtu
362 #define ifr_intval ifr_ifru.ifru_intval
363 #define ifr_kpi ifr_ifru.ifru_kpi
364 #define ifr_wake_flags ifr_ifru.ifru_wake_flags
365 };
367 /*#include <packon.h>
368 #pragma pack(push, 1)*/
369 struct ip {
370 u_char ip_hl:4, ip_v:4;
371 u_char ip_tos;
372 u_short ip_len;
373 u_short ip_id;
374 u_short ip_off;
375 #define IP_RP 0x8000
376 #define IP_DF 0x4000
377 #define IP_MF 0x2000
378 #define IP_OFFMASK 0x1fff
379 u_char ip_ttl;
380 u_char ip_p;
381 u_short ip_sum;
382 struct in_addr ip_src, ip_dst;
383 };
385 struct ifaddrs {
386 struct ifaddrs *ifa_next;
387 char *ifa_name;
388 unsigned int ifa_flags;
389 struct sockaddr *ifa_addr;
390 struct sockaddr *ifa_netmask;
391 struct sockaddr *ifa_dstaddr;
392 void *ifa_data;
393 };
395 struct udphdr {
396 unsigned __int16 uh_sport;
397 unsigned __int16 uh_dport;
398 unsigned __int16 uh_ulen;
399 unsigned __int16 uh_sum;
400 };
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) || defined(ANDROID)
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
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
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> */
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 #include <netinet/ip_icmp.h>
478 #else
479 #include <user_ip_icmp.h>
480 #endif
481 /* #include <netinet/in_pcb.h> ported to userspace */
482 #include <user_inpcb.h>
484 /* for getifaddrs */
485 #include <sys/types.h>
486 #if !defined(__Userspace_os_Windows)
487 #if !defined(ANDROID) && (defined(INET) || defined(INET6))
488 #include <ifaddrs.h>
489 #endif
491 /* for ioctl */
492 #include <sys/ioctl.h>
494 /* for close, etc. */
495 #include <unistd.h>
496 #endif
498 /* lots of errno's used and needed in userspace */
500 /* for offsetof */
501 #include <stddef.h>
503 #if defined(SCTP_PROCESS_LEVEL_LOCKS) && !defined(__Userspace_os_Windows)
504 /* for pthread_mutex_lock, pthread_mutex_unlock, etc. */
505 #include <pthread.h>
506 #endif
508 #ifdef IPSEC
509 #include <netipsec/ipsec.h>
510 #include <netipsec/key.h>
511 #endif /* IPSEC */
513 #ifdef INET6
514 #if defined(__Userspace_os_FreeBSD)
515 #include <sys/domain.h>
516 #endif
517 #ifdef IPSEC
518 #include <netipsec/ipsec6.h>
519 #endif
520 #if !defined(__Userspace_os_Windows)
521 #include <netinet/ip6.h>
522 #include <netinet/icmp6.h>
523 #endif
524 #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)
525 #include "user_ip6_var.h"
526 #else
527 #include <netinet6/ip6_var.h>
528 #endif
529 #if defined(__Userspace_os_FreeBSD)
530 #include <netinet6/in6_pcb.h>
531 #include <netinet6/ip6protosw.h>
532 /* #include <netinet6/nd6.h> was a 0 byte file */
533 #include <netinet6/scope6_var.h>
534 #endif
535 #endif /* INET6 */
537 #if defined(HAVE_SCTP_PEELOFF_SOCKOPT)
538 #include <sys/file.h>
539 #include <sys/filedesc.h>
540 #endif
542 #include "netinet/sctp_sha1.h"
544 #if __FreeBSD_version >= 700000
545 #include <netinet/ip_options.h>
546 #endif
548 #define SCTP_PRINTF(...) \
549 if (SCTP_BASE_VAR(debug_printf)) { \
550 SCTP_BASE_VAR(debug_printf)(__VA_ARGS__); \
551 }
553 #if defined(__FreeBSD__)
554 #ifndef in6pcb
555 #define in6pcb inpcb
556 #endif
557 #endif
558 /* Declare all the malloc names for all the various mallocs */
559 MALLOC_DECLARE(SCTP_M_MAP);
560 MALLOC_DECLARE(SCTP_M_STRMI);
561 MALLOC_DECLARE(SCTP_M_STRMO);
562 MALLOC_DECLARE(SCTP_M_ASC_ADDR);
563 MALLOC_DECLARE(SCTP_M_ASC_IT);
564 MALLOC_DECLARE(SCTP_M_AUTH_CL);
565 MALLOC_DECLARE(SCTP_M_AUTH_KY);
566 MALLOC_DECLARE(SCTP_M_AUTH_HL);
567 MALLOC_DECLARE(SCTP_M_AUTH_IF);
568 MALLOC_DECLARE(SCTP_M_STRESET);
569 MALLOC_DECLARE(SCTP_M_CMSG);
570 MALLOC_DECLARE(SCTP_M_COPYAL);
571 MALLOC_DECLARE(SCTP_M_VRF);
572 MALLOC_DECLARE(SCTP_M_IFA);
573 MALLOC_DECLARE(SCTP_M_IFN);
574 MALLOC_DECLARE(SCTP_M_TIMW);
575 MALLOC_DECLARE(SCTP_M_MVRF);
576 MALLOC_DECLARE(SCTP_M_ITER);
577 MALLOC_DECLARE(SCTP_M_SOCKOPT);
579 #if defined(SCTP_LOCAL_TRACE_BUF)
581 #define SCTP_GET_CYCLECOUNT get_cyclecount()
582 #define SCTP_CTR6 sctp_log_trace
584 #else
585 #define SCTP_CTR6 CTR6
586 #endif
588 /* Empty ktr statement for _Userspace__ (similar to what is done for mac) */
589 #define CTR6(m, d, p1, p2, p3, p4, p5, p6)
593 #define SCTP_BASE_INFO(__m) system_base_info.sctppcbinfo.__m
594 #define SCTP_BASE_STATS system_base_info.sctpstat
595 #define SCTP_BASE_STAT(__m) system_base_info.sctpstat.__m
596 #define SCTP_BASE_SYSCTL(__m) system_base_info.sctpsysctl.__m
597 #define SCTP_BASE_VAR(__m) system_base_info.__m
599 /*
600 *
601 */
602 #if !defined(__Userspace_os_Darwin)
603 #define USER_ADDR_NULL (NULL) /* FIX ME: temp */
604 #endif
606 #if defined(SCTP_DEBUG)
607 #include <netinet/sctp_constants.h>
608 #define SCTPDBG(level, ...) \
609 { \
610 do { \
611 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level) { \
612 SCTP_PRINTF(__VA_ARGS__); \
613 } \
614 } while (0); \
615 }
616 #define SCTPDBG_ADDR(level, addr) \
617 { \
618 do { \
619 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) { \
620 sctp_print_address(addr); \
621 } \
622 } while (0); \
623 }
624 #else
625 #define SCTPDBG(level, ...)
626 #define SCTPDBG_ADDR(level, addr)
627 #endif
629 #ifdef SCTP_LTRACE_CHUNKS
630 #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)
631 #else
632 #define SCTP_LTRACE_CHK(a, b, c, d)
633 #endif
635 #ifdef SCTP_LTRACE_ERRORS
636 #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err) \
637 if (sctp_logging_level & SCTP_LTRACE_ERROR_ENABLE) \
638 SCTP_PRINTF("mbuf:%p inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
639 (void *)m, (void *)inp, (void *)stcb, (void *)net, file, __LINE__, err);
640 #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err) \
641 if (sctp_logging_level & SCTP_LTRACE_ERROR_ENABLE) \
642 SCTP_PRINTF("inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
643 (void *)inp, (void *)stcb, (void *)net, file, __LINE__, err);
644 #else
645 #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err)
646 #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err)
647 #endif
650 /*
651 * Local address and interface list handling
652 */
653 #define SCTP_MAX_VRF_ID 0
654 #define SCTP_SIZE_OF_VRF_HASH 3
655 #define SCTP_IFNAMSIZ IFNAMSIZ
656 #define SCTP_DEFAULT_VRFID 0
657 #define SCTP_VRF_ADDR_HASH_SIZE 16
658 #define SCTP_VRF_IFN_HASH_SIZE 3
659 #define SCTP_INIT_VRF_TABLEID(vrf)
661 #if !defined(__Userspace_os_Windows)
662 #define SCTP_IFN_IS_IFT_LOOP(ifn) (strncmp((ifn)->ifn_name, "lo", 2) == 0)
663 /* BSD definition */
664 /* #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) */
665 /* only used in IPv6 scenario, which isn't supported yet */
666 #define SCTP_ROUTE_IS_REAL_LOOP(ro) 0
668 /*
669 * Access to IFN's to help with src-addr-selection
670 */
671 /* This could return VOID if the index works but for BSD we provide both. */
672 #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) (void *)ro->ro_rt->rt_ifp
673 #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) 1 /* compiles... TODO use routing socket to determine */
674 #define SCTP_ROUTE_HAS_VALID_IFN(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
675 #endif
677 /*
678 * general memory allocation
679 */
680 #define SCTP_MALLOC(var, type, size, name) \
681 do { \
682 MALLOC(var, type, size, name, M_NOWAIT); \
683 } while (0)
685 #define SCTP_FREE(var, type) FREE(var, type)
687 #define SCTP_MALLOC_SONAME(var, type, size) \
688 do { \
689 MALLOC(var, type, size, M_SONAME, (M_WAITOK | M_ZERO)); \
690 } while (0)
692 #define SCTP_FREE_SONAME(var) FREE(var, M_SONAME)
694 #define SCTP_PROCESS_STRUCT struct proc *
696 /*
697 * zone allocation functions
698 */
701 #if defined(SCTP_SIMPLE_ALLOCATOR)
702 /*typedef size_t sctp_zone_t;*/
703 #define SCTP_ZONE_INIT(zone, name, size, number) { \
704 zone = size; \
705 }
707 /* __Userspace__ SCTP_ZONE_GET: allocate element from the zone */
708 #define SCTP_ZONE_GET(zone, type) \
709 (type *)malloc(zone);
712 /* __Userspace__ SCTP_ZONE_FREE: free element from the zone */
713 #define SCTP_ZONE_FREE(zone, element) { \
714 free(element); \
715 }
717 #define SCTP_ZONE_DESTROY(zone)
718 #else
719 /*__Userspace__
720 Compiling & linking notes: Needs libumem, which has been placed in ./user_lib
721 All userspace header files are in ./user_include. Makefile will need the
722 following.
723 CFLAGS = -I./ -Wall
724 LDFLAGS = -L./user_lib -R./user_lib -lumem
725 */
726 #include "user_include/umem.h"
728 /* __Userspace__ SCTP_ZONE_INIT: initialize the zone */
729 /*
730 __Userspace__
731 No equivalent function to uma_zone_set_max added yet. (See SCTP_ZONE_INIT in sctp_os_bsd.h
732 for reference). It may not be required as mentioned in
733 http://nixdoc.net/man-pages/FreeBSD/uma_zalloc.9.html that
734 max limits may not enforced on systems with more than one CPU.
735 */
736 #define SCTP_ZONE_INIT(zone, name, size, number) { \
737 zone = umem_cache_create(name, size, 0, NULL, NULL, NULL, NULL, NULL, 0); \
738 }
740 /* __Userspace__ SCTP_ZONE_GET: allocate element from the zone */
741 #define SCTP_ZONE_GET(zone, type) \
742 (type *)umem_cache_alloc(zone, UMEM_DEFAULT);
745 /* __Userspace__ SCTP_ZONE_FREE: free element from the zone */
746 #define SCTP_ZONE_FREE(zone, element) \
747 umem_cache_free(zone, element);
750 /* __Userspace__ SCTP_ZONE_DESTROY: destroy the zone */
751 #define SCTP_ZONE_DESTROY(zone) \
752 umem_cache_destroy(zone);
753 #endif
755 /* global struct ifaddrs used in sctp_init_ifns_for_vrf getifaddrs call
756 * but references to fields are needed to persist as the vrf is queried.
757 * getifaddrs allocates memory that needs to be freed with a freeifaddrs
758 * call; this global is used to call freeifaddrs upon in sctp_pcb_finish
759 */
760 extern struct ifaddrs *g_interfaces;
763 /*
764 * __Userspace__ Defining sctp_hashinit_flags() and sctp_hashdestroy() for userland.
765 */
766 void *sctp_hashinit_flags(int elements, struct malloc_type *type,
767 u_long *hashmask, int flags);
768 void
769 sctp_hashdestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask);
771 void
772 sctp_hashfreedestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask);
775 #define HASH_NOWAIT 0x00000001
776 #define HASH_WAITOK 0x00000002
778 /* M_PCB is MALLOC_DECLARE'd in sys/socketvar.h */
779 #define SCTP_HASH_INIT(size, hashmark) sctp_hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT)
781 #define SCTP_HASH_FREE(table, hashmark) sctp_hashdestroy(table, M_PCB, hashmark)
783 #define SCTP_HASH_FREE_DESTROY(table, hashmark) sctp_hashfreedestroy(table, M_PCB, hashmark)
784 #define SCTP_M_COPYM m_copym
786 /*
787 * timers
788 */
789 /* __Userspace__
790 * user_sctp_callout.h has typedef struct sctp_callout sctp_os_timer_t;
791 * which is used in the timer related functions such as
792 * SCTP_OS_TIMER_INIT etc.
793 */
794 #include <netinet/sctp_callout.h>
796 /* __Userspace__ Creating a receive thread */
797 #include <user_recv_thread.h>
799 /*__Userspace__ defining KTR_SUBSYS 1 as done in sctp_os_macosx.h */
800 #define KTR_SUBSYS 1
802 #define sctp_get_tick_count() (ticks)
804 /* The packed define for 64 bit platforms */
805 #if !defined(__Userspace_os_Windows)
806 #define SCTP_PACKED __attribute__((packed))
807 #define SCTP_UNUSED __attribute__((unused))
808 #else
809 #define SCTP_PACKED
810 #define SCTP_UNUSED
811 #endif
813 /*
814 * Functions
815 */
816 /* Mbuf manipulation and access macros */
817 #define SCTP_BUF_LEN(m) (m->m_len)
818 #define SCTP_BUF_NEXT(m) (m->m_next)
819 #define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt)
820 #define SCTP_BUF_RESV_UF(m, size) m->m_data += size
821 #define SCTP_BUF_AT(m, size) m->m_data + size
822 #define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT)
823 #define SCTP_BUF_EXTEND_SIZE(m) (m->m_ext.ext_size)
824 #define SCTP_BUF_TYPE(m) (m->m_type)
825 #define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif)
826 #define SCTP_BUF_PREPEND M_PREPEND
828 #define SCTP_ALIGN_TO_END(m, len) if(m->m_flags & M_PKTHDR) { \
829 MH_ALIGN(m, len); \
830 } else if ((m->m_flags & M_EXT) == 0) { \
831 M_ALIGN(m, len); \
832 }
834 /* We make it so if you have up to 4 threads
835 * writting based on the default size of
836 * the packet log 65 k, that would be
837 * 4 16k packets before we would hit
838 * a problem.
839 */
840 #define SCTP_PKTLOG_WRITERS_NEED_LOCK 3
843 /*
844 * routes, output, etc.
845 */
847 typedef struct sctp_route sctp_route_t;
848 typedef struct sctp_rtentry sctp_rtentry_t;
850 static inline void sctp_userspace_rtalloc(sctp_route_t *ro)
851 {
852 if (ro->ro_rt != NULL) {
853 ro->ro_rt->rt_refcnt++;
854 return;
855 }
857 ro->ro_rt = (sctp_rtentry_t *) malloc(sizeof(sctp_rtentry_t));
858 if (ro->ro_rt == NULL)
859 return;
861 /* initialize */
862 memset(ro->ro_rt, 0, sizeof(sctp_rtentry_t));
863 ro->ro_rt->rt_refcnt = 1;
865 /* set MTU */
866 /* TODO set this based on the ro->ro_dst, looking up MTU with routing socket */
867 #if 0
868 if (userspace_rawroute == -1) {
869 userspace_rawroute = socket(AF_ROUTE, SOCK_RAW, 0);
870 if (userspace_rawroute == -1)
871 return;
872 }
873 #endif
874 ro->ro_rt->rt_rmx.rmx_mtu = 1500; /* FIXME temporary solution */
876 /* TODO enable the ability to obtain interface index of route for
877 * SCTP_GET_IF_INDEX_FROM_ROUTE macro.
878 */
879 }
880 #define SCTP_RTALLOC(ro, vrf_id) sctp_userspace_rtalloc((sctp_route_t *)ro)
882 /* dummy rtfree needed once user_route.h is included */
883 static inline void sctp_userspace_rtfree(sctp_rtentry_t *rt)
884 {
885 if(rt == NULL) {
886 return;
887 }
888 if(--rt->rt_refcnt > 0) {
889 return;
890 }
891 free(rt);
892 rt = NULL;
893 }
894 #define rtfree(arg1) sctp_userspace_rtfree(arg1)
897 /*************************/
898 /* MTU */
899 /*************************/
900 int sctp_userspace_get_mtu_from_ifn(uint32_t if_index, int af);
902 #define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, af) sctp_userspace_get_mtu_from_ifn(ifn_index, af)
904 #define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((rt != NULL) ? rt->rt_rmx.rmx_mtu : 0)
906 #define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn) sctp_userspace_get_mtu_from_ifn(if_nametoindex(((struct ifaddrs *) (sctp_ifn))->ifa_name), AF_INET)
908 #define SCTP_SET_MTU_OF_ROUTE(sa, rt, mtu) do { \
909 if (rt != NULL) \
910 rt->rt_rmx.rmx_mtu = mtu; \
911 } while(0)
913 /* (de-)register interface event notifications */
914 #define SCTP_REGISTER_INTERFACE(ifhandle, af)
915 #define SCTP_DEREGISTER_INTERFACE(ifhandle, af)
918 /*************************/
919 /* These are for logging */
920 /*************************/
921 /* return the base ext data pointer */
922 #define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf)
923 /* return the refcnt of the data pointer */
924 #define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ref_cnt)
925 /* return any buffer related flags, this is
926 * used beyond logging for apple only.
927 */
928 #define SCTP_BUF_GET_FLAGS(m) (m->m_flags)
930 /* For BSD this just accesses the M_PKTHDR length
931 * so it operates on an mbuf with hdr flag. Other
932 * O/S's may have seperate packet header and mbuf
933 * chain pointers.. thus the macro.
934 */
935 #define SCTP_HEADER_TO_CHAIN(m) (m)
936 #define SCTP_DETACH_HEADER_FROM_CHAIN(m)
937 #define SCTP_HEADER_LEN(m) ((m)->m_pkthdr.len)
938 #define SCTP_GET_HEADER_FOR_OUTPUT(o_pak) 0
939 #define SCTP_RELEASE_HEADER(m)
940 #define SCTP_RELEASE_PKT(m) sctp_m_freem(m)
941 /* UDP __Userspace__ - dummy definition */
942 #define SCTP_ENABLE_UDP_CSUM(m) m=m
943 /* BSD definition */
944 /* #define SCTP_ENABLE_UDP_CSUM(m) do { \ */
945 /* m->m_pkthdr.csum_flags = CSUM_UDP; \ */
946 /* m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); \ */
947 /* } while (0) */
949 #define SCTP_GET_PKT_VRFID(m, vrf_id) ((vrf_id = SCTP_DEFAULT_VRFID) != SCTP_DEFAULT_VRFID)
953 /* Attach the chain of data into the sendable packet. */
954 #define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \
955 pak = m; \
956 pak->m_pkthdr.len = packet_length; \
957 } while(0)
959 /* Other m_pkthdr type things */
960 /* FIXME need real definitions */
961 #define SCTP_IS_IT_BROADCAST(dst, m) 0
962 /* OOTB only #define SCTP_IS_IT_BROADCAST(dst, m) ((m->m_flags & M_PKTHDR) ? in_broadcast(dst, m->m_pkthdr.rcvif) : 0) BSD def */
963 #define SCTP_IS_IT_LOOPBACK(m) 0
964 /* 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 */
967 /* This converts any input packet header
968 * into the chain of data holders, for BSD
969 * its a NOP.
970 */
972 /* get the v6 hop limit */
973 #define SCTP_GET_HLIM(inp, ro) 128 /* As done for __Windows__ */
974 #define IPv6_HOP_LIMIT 128
976 /* is the endpoint v6only? */
977 #define SCTP_IPV6_V6ONLY(inp) (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY)
978 /* is the socket non-blocking? */
979 #define SCTP_SO_IS_NBIO(so) ((so)->so_state & SS_NBIO)
980 #define SCTP_SET_SO_NBIO(so) ((so)->so_state |= SS_NBIO)
981 #define SCTP_CLEAR_SO_NBIO(so) ((so)->so_state &= ~SS_NBIO)
982 /* get the socket type */
983 #define SCTP_SO_TYPE(so) ((so)->so_type)
985 /* reserve sb space for a socket */
986 #define SCTP_SORESERVE(so, send, recv) soreserve(so, send, recv)
988 /* wakeup a socket */
989 #define SCTP_SOWAKEUP(so) wakeup(&(so)->so_timeo, so)
990 /* clear the socket buffer state */
991 #define SCTP_SB_CLEAR(sb) \
992 (sb).sb_cc = 0; \
993 (sb).sb_mb = NULL; \
994 (sb).sb_mbcnt = 0;
996 #define SCTP_SB_LIMIT_RCV(so) so->so_rcv.sb_hiwat
997 #define SCTP_SB_LIMIT_SND(so) so->so_snd.sb_hiwat
999 /* Future zero copy wakeup/send function */
1000 #define SCTP_ZERO_COPY_EVENT(inp, so)
1001 /* This is re-pulse ourselves for sendbuf */
1002 #define SCTP_ZERO_COPY_SENDQ_EVENT(inp, so)
1004 #define SCTP_READ_RANDOM(buf, len) read_random(buf, len)
1006 #define SCTP_SHA1_CTX struct sctp_sha1_context
1007 #define SCTP_SHA1_INIT sctp_sha1_init
1008 #define SCTP_SHA1_UPDATE sctp_sha1_update
1009 #define SCTP_SHA1_FINAL(x,y) sctp_sha1_final((unsigned char *)x, y)
1011 /* start OOTB only stuff */
1012 /* TODO IFT_LOOP is in net/if_types.h on Linux */
1013 #define IFT_LOOP 0x18
1015 /* sctp_pcb.h */
1017 #if defined(__Userspace_os_Windows)
1018 #define SHUT_RD 1
1019 #define SHUT_WR 2
1020 #define SHUT_RDWR 3
1021 #endif
1022 #define PRU_FLUSH_RD SHUT_RD
1023 #define PRU_FLUSH_WR SHUT_WR
1024 #define PRU_FLUSH_RDWR SHUT_RDWR
1026 /* netinet/ip_var.h defintions are behind an if defined for _KERNEL on FreeBSD */
1027 #define IP_RAWOUTPUT 0x2
1030 /* end OOTB only stuff */
1032 #define AF_CONN 123
1033 struct sockaddr_conn {
1034 #ifdef HAVE_SCONN_LEN
1035 uint8_t sconn_len;
1036 #endif
1037 uint8_t sconn_family;
1038 uint16_t sconn_port;
1039 void *sconn_addr;
1040 };
1042 /*
1043 * SCTP protocol specific mbuf flags.
1044 */
1045 #define M_NOTIFICATION M_PROTO5 /* SCTP notification */
1047 /*
1048 * IP output routines
1049 */
1051 /* Defining SCTP_IP_ID macro.
1052 In netinet/ip_output.c, we have u_short ip_id;
1053 In netinet/ip_var.h, we have extern u_short ip_id; (enclosed within _KERNEL_)
1054 See static __inline uint16_t ip_newid(void) in netinet/ip_var.h
1055 */
1056 #define SCTP_IP_ID(inp) (ip_id)
1058 /* need sctphdr to get port in SCTP_IP_OUTPUT. sctphdr defined in sctp.h */
1059 #include <netinet/sctp.h>
1060 extern void sctp_userspace_ip_output(int *result, struct mbuf *o_pak,
1061 sctp_route_t *ro, void *stcb,
1062 uint32_t vrf_id);
1064 #define SCTP_IP_OUTPUT(result, o_pak, ro, stcb, vrf_id) sctp_userspace_ip_output(&result, o_pak, ro, stcb, vrf_id);
1066 #if defined(INET6)
1067 extern void sctp_userspace_ip6_output(int *result, struct mbuf *o_pak,
1068 struct route_in6 *ro, void *stcb,
1069 uint32_t vrf_id);
1070 #define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) sctp_userspace_ip6_output(&result, o_pak, ro, stcb, vrf_id);
1071 #endif
1075 #if 0
1076 #define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) \
1077 { \
1078 if (stcb && stcb->sctp_ep) \
1079 result = ip6_output(o_pak, \
1080 ((struct in6pcb *)(stcb->sctp_ep))->in6p_outputopts, \
1081 (ro), 0, 0, ifp, NULL); \
1082 else \
1083 result = ip6_output(o_pak, NULL, (ro), 0, 0, ifp, NULL); \
1084 }
1085 #endif
1087 struct mbuf *
1088 sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header, int how, int allonebuf, int type);
1091 /* with the current included files, this is defined in Linux but
1092 * in FreeBSD, it is behind a _KERNEL in sys/socket.h ...
1093 */
1094 #if defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_OpenBSD)
1095 /* stolen from /usr/include/sys/socket.h */
1096 #define CMSG_ALIGN(n) _ALIGN(n)
1097 #elif defined(__Userspace_os_NetBSD)
1098 #define CMSG_ALIGN(n) (((n) + __ALIGNBYTES) & ~__ALIGNBYTES)
1099 #elif defined(__Userspace_os_Darwin)
1100 #if !defined(__DARWIN_ALIGNBYTES)
1101 #define __DARWIN_ALIGNBYTES (sizeof(__darwin_size_t) - 1)
1102 #endif
1104 #if !defined(__DARWIN_ALIGN)
1105 #define __DARWIN_ALIGN(p) ((__darwin_size_t)((char *)(uintptr_t)(p) + __DARWIN_ALIGNBYTES) &~ __DARWIN_ALIGNBYTES)
1106 #endif
1108 #if !defined(__DARWIN_ALIGNBYTES32)
1109 #define __DARWIN_ALIGNBYTES32 (sizeof(__uint32_t) - 1)
1110 #endif
1112 #if !defined(__DARWIN_ALIGN32)
1113 #define __DARWIN_ALIGN32(p) ((__darwin_size_t)((char *)(uintptr_t)(p) + __DARWIN_ALIGNBYTES32) &~ __DARWIN_ALIGNBYTES32)
1114 #endif
1115 #define CMSG_ALIGN(n) __DARWIN_ALIGN32(n)
1116 #endif
1117 #define I_AM_HERE \
1118 do { \
1119 SCTP_PRINTF("%s:%d at %s\n", __FILE__, __LINE__ , __FUNCTION__); \
1120 } while (0)
1122 #ifndef timevalsub
1123 #define timevalsub(tp1, tp2) \
1124 do { \
1125 (tp1)->tv_sec -= (tp2)->tv_sec; \
1126 (tp1)->tv_usec -= (tp2)->tv_usec; \
1127 if ((tp1)->tv_usec < 0) { \
1128 (tp1)->tv_sec--; \
1129 (tp1)->tv_usec += 1000000; \
1130 } \
1131 } while (0)
1132 #endif
1134 #if defined(__Userspace_os_Linux)
1135 #if !defined(TAILQ_FOREACH_SAFE)
1136 #define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
1137 for ((var) = ((head)->tqh_first); \
1138 (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
1139 (var) = (tvar))
1140 #endif
1141 #if !defined(LIST_FOREACH_SAFE)
1142 #define LIST_FOREACH_SAFE(var, head, field, tvar) \
1143 for ((var) = ((head)->lh_first); \
1144 (var) && ((tvar) = LIST_NEXT((var), field), 1); \
1145 (var) = (tvar))
1146 #endif
1147 #endif
1148 #if defined(__Userspace_os_DragonFly)
1149 #define TAILQ_FOREACH_SAFE TAILQ_FOREACH_MUTABLE
1150 #define LIST_FOREACH_SAFE LIST_FOREACH_MUTABLE
1151 #endif
1152 #endif
