1 /*- 2 * Copyright (c) 2006-2007, Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * b) Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the distribution. 13 * 14 * c) Neither the name of Cisco Systems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 #ifndef __sctp_os_bsd_h__ 33 #define __sctp_os_bsd_h__ 34 /* 35 * includes 36 */ 37 #include "opt_ipsec.h" 38 #include "opt_compat.h" 39 #include "opt_inet6.h" 40 #include "opt_inet.h" 41 #include "opt_sctp.h" 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/malloc.h> 45 #include <sys/kernel.h> 46 #include <sys/sysctl.h> 47 #include <sys/mbuf.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/sysctl.h> 52 #include <sys/resourcevar.h> 53 #include <sys/uio.h> 54 #include <sys/kthread.h> 55 #include <sys/priv.h> 56 #include <sys/random.h> 57 #include <sys/limits.h> 58 #include <sys/queue.h> 59 #include <machine/cpu.h> 60 61 #include <net/if.h> 62 #include <net/if_types.h> 63 #include <net/if_var.h> 64 #include <net/route.h> 65 66 #include <netinet/in.h> 67 #include <netinet/in_systm.h> 68 #include <netinet/ip.h> 69 #include <netinet/in_pcb.h> 70 #include <netinet/in_var.h> 71 #include <netinet/ip_var.h> 72 #include <netinet/ip_icmp.h> 73 #include <netinet/icmp_var.h> 74 75 76 #ifdef IPSEC 77 #include <netinet6/ipsec.h> 78 #include <netkey/key.h> 79 #endif /* IPSEC */ 80 81 #ifdef INET6 82 #include <sys/domain.h> 83 #ifdef IPSEC 84 #include <netinet6/ipsec6.h> 85 #endif 86 #include <netinet/ip6.h> 87 #include <netinet6/ip6_var.h> 88 #include <netinet6/in6_pcb.h> 89 #include <netinet/icmp6.h> 90 #include <netinet6/ip6protosw.h> 91 #include <netinet6/nd6.h> 92 #include <netinet6/scope6_var.h> 93 #endif /* INET6 */ 94 95 96 #include <netinet/ip_options.h> 97 98 #ifndef in6pcb 99 #define in6pcb inpcb 100 #endif 101 102 103 104 /* 105 * 106 */ 107 #define USER_ADDR_NULL (NULL) /* FIX ME: temp */ 108 #define SCTP_LIST_EMPTY(list) LIST_EMPTY(list) 109 110 /* 111 * Local address and interface list handling 112 */ 113 #define SCTP_MAX_VRF_ID 0 114 #define SCTP_SIZE_OF_VRF_HASH 3 115 #define SCTP_IFNAMSIZ IFNAMSIZ 116 #define SCTP_DEFAULT_VRFID 0 117 #define SCTP_VRF_HASH_SIZE 16 118 119 120 #define SCTP_IFN_IS_IFT_LOOP(ifn) ((ifn)->ifn_type == IFT_LOOP) 121 122 /* 123 * Access to IFN's to help with src-addr-selection 124 */ 125 /* This could return VOID if the index works but for BSD we provide both. */ 126 #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) (void *)ro->ro_rt->rt_ifp 127 #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) ro->ro_rt->rt_ifp->if_index 128 129 /* 130 * general memory allocation 131 */ 132 #define SCTP_MALLOC(var, type, size, name) \ 133 do { \ 134 MALLOC(var, type, size, M_PCB, M_NOWAIT); \ 135 } while (0) 136 137 #define SCTP_FREE(var) FREE(var, M_PCB) 138 139 #define SCTP_MALLOC_SONAME(var, type, size) \ 140 do { \ 141 MALLOC(var, type, size, M_SONAME, M_WAITOK | M_ZERO); \ 142 } while (0) 143 144 #define SCTP_FREE_SONAME(var) FREE(var, M_SONAME) 145 146 #define SCTP_PROCESS_STRUCT struct proc * 147 148 /* 149 * zone allocation functions 150 */ 151 #include <vm/uma.h> 152 /* SCTP_ZONE_INIT: initialize the zone */ 153 typedef struct uma_zone *sctp_zone_t; 154 155 #define UMA_ZFLAG_FULL 0x0020 156 #define SCTP_ZONE_INIT(zone, name, size, number) { \ 157 zone = uma_zcreate(name, size, NULL, NULL, NULL, NULL, UMA_ALIGN_PTR,\ 158 UMA_ZFLAG_FULL); \ 159 uma_zone_set_max(zone, number); \ 160 } 161 162 /* SCTP_ZONE_GET: allocate element from the zone */ 163 #define SCTP_ZONE_GET(zone, type) \ 164 (type *)uma_zalloc(zone, M_NOWAIT); 165 166 /* SCTP_ZONE_FREE: free element from the zone */ 167 #define SCTP_ZONE_FREE(zone, element) \ 168 uma_zfree(zone, element); 169 #define SCTP_HASH_INIT(size, hashmark) hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT) 170 #define SCTP_HASH_FREE(table, hashmark) hashdestroy(table, M_PCB, hashmark) 171 172 #define SCTP_M_COPYM m_copym 173 174 /* 175 * timers 176 */ 177 #include <sys/callout.h> 178 typedef struct callout sctp_os_timer_t; 179 180 #define SCTP_OS_TIMER_INIT(tmr) callout_init(tmr, 1) 181 #define SCTP_OS_TIMER_START callout_reset 182 #define SCTP_OS_TIMER_STOP callout_stop 183 #define SCTP_OS_TIMER_STOP_DRAIN callout_drain 184 #define SCTP_OS_TIMER_PENDING callout_pending 185 #define SCTP_OS_TIMER_ACTIVE callout_active 186 #define SCTP_OS_TIMER_DEACTIVATE callout_deactivate 187 188 /* 189 * Functions 190 */ 191 /* Mbuf manipulation and access macros */ 192 #define SCTP_BUF_LEN(m) (m->m_len) 193 #define SCTP_BUF_NEXT(m) (m->m_next) 194 #define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt) 195 #define SCTP_BUF_RESV_UF(m, size) m->m_data += size 196 #define SCTP_BUF_AT(m, size) m->m_data + size 197 #define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT) 198 #define SCTP_BUF_EXTEND_SIZE(m) (m->m_ext.ext_size) 199 #define SCTP_BUF_TYPE(m) (m->m_type) 200 #define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif) 201 #define SCTP_BUF_PREPEND M_PREPEND 202 203 #define SCTP_ALIGN_TO_END(m, len) if(m->m_flags & M_PKTHDR) { \ 204 MH_ALIGN(m, len); \ 205 } else if ((m->m_flags & M_EXT) == 0) { \ 206 M_ALIGN(m, len); \ 207 } 208 209 /*************************/ 210 /* These are for logging */ 211 /*************************/ 212 /* return the base ext data pointer */ 213 #define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf) 214 /* return the refcnt of the data pointer */ 215 #define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ref_cnt) 216 /* return any buffer related flags, this is 217 * used beyond logging for apple only. 218 */ 219 #define SCTP_BUF_GET_FLAGS(m) (m->m_flags) 220 221 /* For BSD this just accesses the M_PKTHDR length 222 * so it operates on an mbuf with hdr flag. Other 223 * O/S's may have seperate packet header and mbuf 224 * chain pointers.. thus the macro. 225 */ 226 #define SCTP_HEADER_TO_CHAIN(m) (m) 227 #define SCTP_HEADER_LEN(m) (m->m_pkthdr.len) 228 #define SCTP_GET_HEADER_FOR_OUTPUT(len) sctp_get_mbuf_for_msg(len, 1, M_DONTWAIT, 1, MT_DATA) 229 230 /* Attach the chain of data into the sendable packet. */ 231 #define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \ 232 pak->m_next = m; \ 233 pak->m_pkthdr.len = packet_length; \ 234 } while(0) 235 236 /* Other m_pkthdr type things */ 237 #define SCTP_IS_IT_BROADCAST(dst, m) in_broadcast(dst, m->m_pkthdr.rcvif) 238 #define SCTP_IS_IT_LOOPBACK(m) ((m->m_pkthdr.rcvif == NULL) ||(m->m_pkthdr.rcvif->if_type == IFT_LOOP)) 239 240 241 /* This converts any input packet header 242 * into the chain of data holders, for BSD 243 * its a NOP. 244 */ 245 #define SCTP_PAK_TO_BUF(i_pak) (i_pak) 246 247 /* Macro's for getting length from V6/V4 header */ 248 #define SCTP_GET_IPV4_LENGTH(iph) (iph->ip_len) 249 #define SCTP_GET_IPV6_LENGTH(ip6) (ntohs(ip6->ip6_plen)) 250 251 /* is the endpoint v6only? */ 252 #define SCTP_IPV6_V6ONLY(inp) (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY) 253 /* is the socket non-blocking? */ 254 #define SCTP_SO_IS_NBIO(so) ((so)->so_state & SS_NBIO) 255 #define SCTP_SET_SO_NBIO(so) ((so)->so_state |= SS_NBIO) 256 #define SCTP_CLEAR_SO_NBIO(so) ((so)->so_state &= ~SS_NBIO) 257 /* get the socket type */ 258 #define SCTP_SO_TYPE(so) ((so)->so_type) 259 /* reserve sb space for a socket */ 260 #define SCTP_SORESERVE(so, send, recv) soreserve(so, send, recv) 261 /* clear the socket buffer state */ 262 #define SCTP_SB_CLEAR(sb) \ 263 (sb).sb_cc = 0; \ 264 (sb).sb_mb = NULL; \ 265 (sb).sb_mbcnt = 0; 266 267 #define SCTP_SB_LIMIT_RCV(so) so->so_rcv.sb_hiwat 268 #define SCTP_SB_LIMIT_SND(so) so->so_snd.sb_hiwat 269 270 /* 271 * routes, output, etc. 272 */ 273 typedef struct route sctp_route_t; 274 275 276 /* 277 * SCTP AUTH 278 */ 279 #define HAVE_SHA2 280 281 #define SCTP_READ_RANDOM(buf, len) read_random(buf, len) 282 283 #ifdef USE_SCTP_SHA1 284 #include <netinet/sctp_sha1.h> 285 #else 286 #include <crypto/sha1.h> 287 /* map standard crypto API names */ 288 #define SHA1_Init SHA1Init 289 #define SHA1_Update SHA1Update 290 #define SHA1_Final(x,y) SHA1Final((caddr_t)x, y) 291 #endif 292 293 #if defined(HAVE_SHA2) 294 #include <crypto/sha2/sha2.h> 295 #endif 296 297 #include <sys/md5.h> 298 /* map standard crypto API names */ 299 #define MD5_Init MD5Init 300 #define MD5_Update MD5Update 301 #define MD5_Final MD5Final 302 303 #endif 304