2 * Copyright (c) 2006-2007, by Cisco Systems, Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
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8 * this list of conditions and the following disclaimer.
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30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 #ifndef __sctp_os_bsd_h__
33 #define __sctp_os_bsd_h__
37 #include "opt_ipsec.h"
38 #include "opt_compat.h"
39 #include "opt_inet6.h"
43 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/malloc.h>
47 #include <sys/kernel.h>
48 #include <sys/sysctl.h>
50 #include <sys/protosw.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
54 #include <sys/sysctl.h>
55 #include <sys/resourcevar.h>
58 #include <sys/rwlock.h>
59 #include <sys/kthread.h>
61 #include <sys/random.h>
62 #include <sys/limits.h>
63 #include <sys/queue.h>
64 #if defined(__FreeBSD__) && __FreeBSD_version >= 800044
65 #include <sys/vimage.h>
67 #include <machine/cpu.h>
70 #include <net/if_types.h>
71 #include <net/if_var.h>
72 #include <net/route.h>
74 #include <netinet/in.h>
75 #include <netinet/in_systm.h>
76 #include <netinet/ip.h>
77 #include <netinet/in_pcb.h>
78 #include <netinet/in_var.h>
79 #include <netinet/ip_var.h>
80 #include <netinet/ip_icmp.h>
81 #include <netinet/icmp_var.h>
85 #include <netipsec/ipsec.h>
86 #include <netipsec/key.h>
90 #include <sys/domain.h>
92 #include <netipsec/ipsec6.h>
94 #include <netinet/ip6.h>
95 #include <netinet6/ip6_var.h>
96 #include <netinet6/in6_pcb.h>
97 #include <netinet/icmp6.h>
98 #include <netinet6/ip6protosw.h>
99 #include <netinet6/nd6.h>
100 #include <netinet6/scope6_var.h>
104 #include <netinet/ip_options.h>
109 /* Declare all the malloc names for all the various mallocs */
110 MALLOC_DECLARE(SCTP_M_MAP);
111 MALLOC_DECLARE(SCTP_M_STRMI);
112 MALLOC_DECLARE(SCTP_M_STRMO);
113 MALLOC_DECLARE(SCTP_M_ASC_ADDR);
114 MALLOC_DECLARE(SCTP_M_ASC_IT);
115 MALLOC_DECLARE(SCTP_M_AUTH_CL);
116 MALLOC_DECLARE(SCTP_M_AUTH_KY);
117 MALLOC_DECLARE(SCTP_M_AUTH_HL);
118 MALLOC_DECLARE(SCTP_M_AUTH_IF);
119 MALLOC_DECLARE(SCTP_M_STRESET);
120 MALLOC_DECLARE(SCTP_M_CMSG);
121 MALLOC_DECLARE(SCTP_M_COPYAL);
122 MALLOC_DECLARE(SCTP_M_VRF);
123 MALLOC_DECLARE(SCTP_M_IFA);
124 MALLOC_DECLARE(SCTP_M_IFN);
125 MALLOC_DECLARE(SCTP_M_TIMW);
126 MALLOC_DECLARE(SCTP_M_MVRF);
127 MALLOC_DECLARE(SCTP_M_ITER);
128 MALLOC_DECLARE(SCTP_M_SOCKOPT);
130 #if defined(SCTP_LOCAL_TRACE_BUF)
132 #define SCTP_GET_CYCLECOUNT get_cyclecount()
133 #define SCTP_CTR6 sctp_log_trace
136 #define SCTP_CTR6 CTR6
139 #define SCTP_BASE_INFO(__m) system_base_info.sctppcbinfo.__m
140 #define SCTP_BASE_STATS system_base_info.sctpstat
141 #define SCTP_BASE_STAT(__m) system_base_info.sctpstat.__m
142 #define SCTP_BASE_SYSCTL(__m) system_base_info.sctpsysctl.__m
143 #define SCTP_BASE_VAR(__m) system_base_info.__m
146 * Macros to expand out globals defined by various modules
147 * to either a real global or a virtualized instance of one,
148 * depending on whether VIMAGE is defined.
150 /* first define modules that supply us information */
152 #define MOD_INET inet
153 #define MOD_INET6 inet6
154 #define MOD_IPSEC ipsec
156 /* then define the macro(s) that hook into the vimage macros */
157 #if defined(__FreeBSD__) && __FreeBSD_version >= 800044 && defined(VIMAGE)
159 #define VSYMNAME(__MODULE) vnet_ ## __MODULE
160 #define MODULE_GLOBAL(__MODULE, __SYMBOL) VSYM(VSYMNAME(__MODULE), __SYMBOL)
162 #define MODULE_GLOBAL(__MODULE, __SYMBOL) V_ ## __SYMBOL
165 #define MODULE_GLOBAL(__MODULE, __SYMBOL) (__SYMBOL)
170 #define USER_ADDR_NULL (NULL) /* FIX ME: temp */
171 #define SCTP_LIST_EMPTY(list) LIST_EMPTY(list)
173 #if defined(SCTP_DEBUG)
174 #define SCTPDBG(level, params...) \
177 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) { \
182 #define SCTPDBG_ADDR(level, addr) \
185 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) { \
186 sctp_print_address(addr); \
190 #define SCTPDBG_PKT(level, iph, sh) \
193 if (SCTP_BASE_SYSCTL(sctp_debug_on) & level) { \
194 sctp_print_address_pkt(iph, sh); \
199 #define SCTPDBG(level, params...)
200 #define SCTPDBG_ADDR(level, addr)
201 #define SCTPDBG_PKT(level, iph, sh)
203 #define SCTP_PRINTF(params...) printf(params)
205 #ifdef SCTP_LTRACE_CHUNKS
206 #define SCTP_LTRACE_CHK(a, b, c, d) if(SCTP_BASE_SYSCTL(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)
208 #define SCTP_LTRACE_CHK(a, b, c, d)
211 #ifdef SCTP_LTRACE_ERRORS
212 #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err) if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_ERROR_ENABLE) \
213 printf("mbuf:%p inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
214 m, inp, stcb, net, file, __LINE__, err);
215 #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err) if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_ERROR_ENABLE) \
216 printf("inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \
217 inp, stcb, net, file, __LINE__, err);
219 #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err)
220 #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err)
225 * Local address and interface list handling
227 #define SCTP_MAX_VRF_ID 0
228 #define SCTP_SIZE_OF_VRF_HASH 3
229 #define SCTP_IFNAMSIZ IFNAMSIZ
230 #define SCTP_DEFAULT_VRFID 0
231 #define SCTP_VRF_ADDR_HASH_SIZE 16
232 #define SCTP_VRF_IFN_HASH_SIZE 3
233 #define SCTP_INIT_VRF_TABLEID(vrf)
235 #define SCTP_IFN_IS_IFT_LOOP(ifn) ((ifn)->ifn_type == IFT_LOOP)
236 #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)
239 * Access to IFN's to help with src-addr-selection
241 /* This could return VOID if the index works but for BSD we provide both. */
242 #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) (void *)ro->ro_rt->rt_ifp
243 #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) (ro)->ro_rt->rt_ifp->if_index
244 #define SCTP_ROUTE_HAS_VALID_IFN(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifp)
247 * general memory allocation
249 #define SCTP_MALLOC(var, type, size, name) \
251 MALLOC(var, type, size, name, M_NOWAIT); \
254 #define SCTP_FREE(var, type) FREE(var, type)
256 #define SCTP_MALLOC_SONAME(var, type, size) \
258 MALLOC(var, type, size, M_SONAME, M_WAITOK | M_ZERO); \
261 #define SCTP_FREE_SONAME(var) FREE(var, M_SONAME)
263 #define SCTP_PROCESS_STRUCT struct proc *
266 * zone allocation functions
270 /* SCTP_ZONE_INIT: initialize the zone */
271 typedef struct uma_zone *sctp_zone_t;
273 #define UMA_ZFLAG_FULL 0x0020
274 #define SCTP_ZONE_INIT(zone, name, size, number) { \
275 zone = uma_zcreate(name, size, NULL, NULL, NULL, NULL, UMA_ALIGN_PTR,\
277 uma_zone_set_max(zone, number); \
280 #define SCTP_ZONE_DESTROY(zone) uma_zdestroy(zone)
282 /* SCTP_ZONE_GET: allocate element from the zone */
283 #define SCTP_ZONE_GET(zone, type) \
284 (type *)uma_zalloc(zone, M_NOWAIT);
286 /* SCTP_ZONE_FREE: free element from the zone */
287 #define SCTP_ZONE_FREE(zone, element) \
288 uma_zfree(zone, element);
290 #define SCTP_HASH_INIT(size, hashmark) hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT)
291 #define SCTP_HASH_FREE(table, hashmark) hashdestroy(table, M_PCB, hashmark)
293 #define SCTP_M_COPYM m_copym
298 #include <sys/callout.h>
299 typedef struct callout sctp_os_timer_t;
302 #define SCTP_OS_TIMER_INIT(tmr) callout_init(tmr, 1)
303 #define SCTP_OS_TIMER_START callout_reset
304 #define SCTP_OS_TIMER_STOP callout_stop
305 #define SCTP_OS_TIMER_STOP_DRAIN callout_drain
306 #define SCTP_OS_TIMER_PENDING callout_pending
307 #define SCTP_OS_TIMER_ACTIVE callout_active
308 #define SCTP_OS_TIMER_DEACTIVATE callout_deactivate
310 #define sctp_get_tick_count() (ticks)
312 #define SCTP_UNUSED __attribute__((unused))
317 /* Mbuf manipulation and access macros */
318 #define SCTP_BUF_LEN(m) (m->m_len)
319 #define SCTP_BUF_NEXT(m) (m->m_next)
320 #define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt)
321 #define SCTP_BUF_RESV_UF(m, size) m->m_data += size
322 #define SCTP_BUF_AT(m, size) m->m_data + size
323 #define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT)
324 #define SCTP_BUF_EXTEND_SIZE(m) (m->m_ext.ext_size)
325 #define SCTP_BUF_TYPE(m) (m->m_type)
326 #define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif)
327 #define SCTP_BUF_PREPEND M_PREPEND
329 #define SCTP_ALIGN_TO_END(m, len) if(m->m_flags & M_PKTHDR) { \
331 } else if ((m->m_flags & M_EXT) == 0) { \
335 /* We make it so if you have up to 4 threads
336 * writting based on the default size of
337 * the packet log 65 k, that would be
338 * 4 16k packets before we would hit
341 #define SCTP_PKTLOG_WRITERS_NEED_LOCK 3
343 /*************************/
345 /*************************/
346 #define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, af) ((struct ifnet *)ifn)->if_mtu
347 #define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((rt != NULL) ? rt->rt_rmx.rmx_mtu : 0)
348 #define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn) ((sctp_ifn->ifn_p != NULL) ? ((struct ifnet *)(sctp_ifn->ifn_p))->if_mtu : 0)
349 #define SCTP_SET_MTU_OF_ROUTE(sa, rt, mtu) do { \
351 rt->rt_rmx.rmx_mtu = mtu; \
354 /* (de-)register interface event notifications */
355 #define SCTP_REGISTER_INTERFACE(ifhandle, af)
356 #define SCTP_DEREGISTER_INTERFACE(ifhandle, af)
359 /*************************/
360 /* These are for logging */
361 /*************************/
362 /* return the base ext data pointer */
363 #define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf)
364 /* return the refcnt of the data pointer */
365 #define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ref_cnt)
366 /* return any buffer related flags, this is
367 * used beyond logging for apple only.
369 #define SCTP_BUF_GET_FLAGS(m) (m->m_flags)
371 /* For BSD this just accesses the M_PKTHDR length
372 * so it operates on an mbuf with hdr flag. Other
373 * O/S's may have seperate packet header and mbuf
374 * chain pointers.. thus the macro.
376 #define SCTP_HEADER_TO_CHAIN(m) (m)
377 #define SCTP_DETACH_HEADER_FROM_CHAIN(m)
378 #define SCTP_HEADER_LEN(m) (m->m_pkthdr.len)
379 #define SCTP_GET_HEADER_FOR_OUTPUT(o_pak) 0
380 #define SCTP_RELEASE_HEADER(m)
381 #define SCTP_RELEASE_PKT(m) sctp_m_freem(m)
382 #define SCTP_ENABLE_UDP_CSUM(m) do { \
383 m->m_pkthdr.csum_flags = CSUM_UDP; \
384 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); \
387 #define SCTP_GET_PKT_VRFID(m, vrf_id) ((vrf_id = SCTP_DEFAULT_VRFID) != SCTP_DEFAULT_VRFID)
391 /* Attach the chain of data into the sendable packet. */
392 #define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \
394 pak->m_pkthdr.len = packet_length; \
397 /* Other m_pkthdr type things */
398 #define SCTP_IS_IT_BROADCAST(dst, m) ((m->m_flags & M_PKTHDR) ? in_broadcast(dst, m->m_pkthdr.rcvif) : 0)
399 #define SCTP_IS_IT_LOOPBACK(m) ((m->m_flags & M_PKTHDR) && ((m->m_pkthdr.rcvif == NULL) || (m->m_pkthdr.rcvif->if_type == IFT_LOOP)))
402 /* This converts any input packet header
403 * into the chain of data holders, for BSD
407 /* Macro's for getting length from V6/V4 header */
408 #define SCTP_GET_IPV4_LENGTH(iph) (iph->ip_len)
409 #define SCTP_GET_IPV6_LENGTH(ip6) (ntohs(ip6->ip6_plen))
411 /* get the v6 hop limit */
412 #define SCTP_GET_HLIM(inp, ro) in6_selecthlim((struct in6pcb *)&inp->ip_inp.inp, (ro ? (ro->ro_rt ? (ro->ro_rt->rt_ifp) : (NULL)) : (NULL)));
414 /* is the endpoint v6only? */
415 #define SCTP_IPV6_V6ONLY(inp) (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY)
416 /* is the socket non-blocking? */
417 #define SCTP_SO_IS_NBIO(so) ((so)->so_state & SS_NBIO)
418 #define SCTP_SET_SO_NBIO(so) ((so)->so_state |= SS_NBIO)
419 #define SCTP_CLEAR_SO_NBIO(so) ((so)->so_state &= ~SS_NBIO)
420 /* get the socket type */
421 #define SCTP_SO_TYPE(so) ((so)->so_type)
422 /* reserve sb space for a socket */
423 #define SCTP_SORESERVE(so, send, recv) soreserve(so, send, recv)
424 /* wakeup a socket */
425 #define SCTP_SOWAKEUP(so) wakeup(&(so)->so_timeo)
426 /* clear the socket buffer state */
427 #define SCTP_SB_CLEAR(sb) \
432 #define SCTP_SB_LIMIT_RCV(so) so->so_rcv.sb_hiwat
433 #define SCTP_SB_LIMIT_SND(so) so->so_snd.sb_hiwat
436 * routes, output, etc.
438 typedef struct route sctp_route_t;
439 typedef struct rtentry sctp_rtentry_t;
441 #define SCTP_RTALLOC(ro, vrf_id) rtalloc_ign((struct route *)ro, 0UL)
443 /* Future zero copy wakeup/send function */
444 #define SCTP_ZERO_COPY_EVENT(inp, so)
445 /* This is re-pulse ourselves for sendbuf */
446 #define SCTP_ZERO_COPY_SENDQ_EVENT(inp, so)
451 #define SCTP_IP_OUTPUT(result, o_pak, ro, stcb, vrf_id) \
454 if (stcb && stcb->sctp_ep && stcb->sctp_ep->sctp_socket) { \
455 o_flgs = IP_RAWOUTPUT | (stcb->sctp_ep->sctp_socket->so_options & SO_DONTROUTE); \
457 o_flgs = IP_RAWOUTPUT; \
459 result = ip_output(o_pak, NULL, ro, o_flgs, 0, NULL); \
462 #define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) \
464 if (stcb && stcb->sctp_ep) \
465 result = ip6_output(o_pak, \
466 ((struct in6pcb *)(stcb->sctp_ep))->in6p_outputopts, \
467 (ro), 0, 0, ifp, NULL); \
469 result = ip6_output(o_pak, NULL, (ro), 0, 0, ifp, NULL); \
473 sctp_get_mbuf_for_msg(unsigned int space_needed,
474 int want_header, int how, int allonebuf, int type);
482 #define SCTP_READ_RANDOM(buf, len) read_random(buf, len)
485 #include <netinet/sctp_sha1.h>
487 #include <crypto/sha1.h>
488 /* map standard crypto API names */
489 #define SHA1_Init SHA1Init
490 #define SHA1_Update SHA1Update
491 #define SHA1_Final(x,y) SHA1Final((caddr_t)x, y)
494 #if defined(HAVE_SHA2)
495 #include <crypto/sha2/sha2.h>
499 /* map standard crypto API names */
500 #define MD5_Init MD5Init
501 #define MD5_Update MD5Update
502 #define MD5_Final MD5Final