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/priv.h> 55 #include <sys/random.h> 56 #include <sys/limits.h> 57 #include <sys/queue.h> 58 #include <machine/cpu.h> 59 60 #include <net/if.h> 61 #include <net/if_types.h> 62 #include <net/if_var.h> 63 #include <net/route.h> 64 65 #include <netinet/in.h> 66 #include <netinet/in_systm.h> 67 #include <netinet/ip.h> 68 #include <netinet/in_pcb.h> 69 #include <netinet/in_var.h> 70 #include <netinet/ip_var.h> 71 #include <netinet/ip_icmp.h> 72 #include <netinet/icmp_var.h> 73 74 75 #ifdef IPSEC 76 #include <netinet6/ipsec.h> 77 #include <netkey/key.h> 78 #endif /* IPSEC */ 79 80 #ifdef INET6 81 #include <sys/domain.h> 82 #ifdef IPSEC 83 #include <netinet6/ipsec6.h> 84 #endif 85 #include <netinet/ip6.h> 86 #include <netinet6/ip6_var.h> 87 #include <netinet6/in6_pcb.h> 88 #include <netinet/icmp6.h> 89 #include <netinet6/ip6protosw.h> 90 #include <netinet6/nd6.h> 91 #include <netinet6/scope6_var.h> 92 #endif /* INET6 */ 93 94 95 96 #include <netinet/ip_options.h> 97 98 99 #ifndef in6pcb 100 #define in6pcb inpcb 101 #endif 102 103 104 105 /* 106 * 107 */ 108 #define USER_ADDR_NULL (NULL) /* FIX ME: temp */ 109 #define SCTP_LIST_EMPTY(list) LIST_EMPTY(list) 110 111 /* 112 * general memory allocation 113 */ 114 #define SCTP_MALLOC(var, type, size, name) \ 115 do { \ 116 MALLOC(var, type, size, M_PCB, M_NOWAIT); \ 117 } while (0) 118 119 #define SCTP_FREE(var) FREE(var, M_PCB) 120 121 #define SCTP_MALLOC_SONAME(var, type, size) \ 122 do { \ 123 MALLOC(var, type, size, M_SONAME, M_WAITOK | M_ZERO); \ 124 } while (0) 125 126 #define SCTP_FREE_SONAME(var) FREE(var, M_SONAME) 127 128 /* 129 * zone allocation functions 130 */ 131 #include <vm/uma.h> 132 /* SCTP_ZONE_INIT: initialize the zone */ 133 typedef struct uma_zone *sctp_zone_t; 134 135 #define UMA_ZFLAG_FULL 0x0020 136 #define SCTP_ZONE_INIT(zone, name, size, number) { \ 137 zone = uma_zcreate(name, size, NULL, NULL, NULL, NULL, UMA_ALIGN_PTR,\ 138 UMA_ZFLAG_FULL); \ 139 uma_zone_set_max(zone, number); \ 140 } 141 142 /* SCTP_ZONE_GET: allocate element from the zone */ 143 #define SCTP_ZONE_GET(zone, type) \ 144 (type *)uma_zalloc(zone, M_NOWAIT); 145 146 /* SCTP_ZONE_FREE: free element from the zone */ 147 #define SCTP_ZONE_FREE(zone, element) \ 148 uma_zfree(zone, element); 149 #define SCTP_HASH_INIT(size, hashmark) hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT) 150 #define SCTP_HASH_FREE(table, hashmark) hashdestroy(table, M_PCB, hashmark) 151 152 #define SCTP_M_COPYM m_copym 153 154 /* 155 * timers 156 */ 157 #include <sys/callout.h> 158 typedef struct callout sctp_os_timer_t; 159 160 #define SCTP_OS_TIMER_INIT(tmr) callout_init(tmr, 1) 161 #define SCTP_OS_TIMER_START callout_reset 162 #define SCTP_OS_TIMER_STOP callout_stop 163 #define SCTP_OS_TIMER_STOP_DRAIN callout_drain 164 #define SCTP_OS_TIMER_PENDING callout_pending 165 #define SCTP_OS_TIMER_ACTIVE callout_active 166 #define SCTP_OS_TIMER_DEACTIVATE callout_deactivate 167 168 /* 169 * Functions 170 */ 171 172 /* Mbuf manipulation and access macros */ 173 #define SCTP_BUF_LEN(m) (m->m_len) 174 #define SCTP_BUF_NEXT(m) (m->m_next) 175 #define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt) 176 #define SCTP_BUF_RESV_UF(m, size) m->m_data += size 177 #define SCTP_BUF_AT(m, size) m->m_data + size 178 #define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT) 179 #define SCTP_BUF_EXTEND_SIZE(m) (m->m_ext.ext_size) 180 #define SCTP_BUF_TYPE(m) (m->m_type) 181 #define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif) 182 #define SCTP_BUF_PREPEND M_PREPEND 183 /*************************/ 184 /* These are for logging */ 185 /*************************/ 186 /* return the base ext data pointer */ 187 #define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf) 188 /* return the refcnt of the data pointer */ 189 #define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ref_cnt) 190 /* return any buffer related flags, this is 191 * used beyond logging for apple only. 192 */ 193 #define SCTP_BUF_GET_FLAGS(m) (m->m_flags) 194 195 /* For BSD this just accesses the M_PKTHDR length 196 * so it operates on an mbuf with hdr flag. Other 197 * O/S's may have seperate packet header and mbuf 198 * chain pointers.. thus the macro. 199 */ 200 #define SCTP_HEADER_TO_CHAIN(m) (m) 201 #define SCTP_HEADER_LEN(m) (m->m_pkthdr.len) 202 #define SCTP_GET_HEADER_FOR_OUTPUT(len) sctp_get_mbuf_for_msg(len, 1, M_DONTWAIT, 1, MT_DATA) 203 204 /* Attach the chain of data into the sendable packet. */ 205 #define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \ 206 pak->m_next = m; \ 207 pak->m_pkthdr.len = packet_length; \ 208 } while(0) 209 210 /* Other m_pkthdr type things */ 211 #define SCTP_IS_IT_BROADCAST(dst, m) in_broadcast(dst, m->m_pkthdr.rcvif) 212 #define SCTP_IS_IT_LOOPBACK(m) ((m->m_pkthdr.rcvif == NULL) ||(m->m_pkthdr.rcvif->if_type == IFT_LOOP)) 213 214 215 /* This converts any input packet header 216 * into the chain of data holders, for BSD 217 * its a NOP. 218 */ 219 #define SCTP_PAK_TO_BUF(i_pak) (i_pak) 220 221 /* Macro's for getting length from V6/V4 header */ 222 #define SCTP_GET_IPV4_LENGTH(iph) (iph->ip_len) 223 #define SCTP_GET_IPV6_LENGTH(ip6) (ntohs(ip6->ip6_plen)) 224 225 /* is the endpoint v6only? */ 226 #define SCTP_IPV6_V6ONLY(inp) (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY) 227 228 229 /* 230 * SCTP AUTH 231 */ 232 #define HAVE_SHA2 233 234 #define SCTP_READ_RANDOM(buf, len) read_random(buf, len) 235 236 #ifdef USE_SCTP_SHA1 237 #include <netinet/sctp_sha1.h> 238 #else 239 #include <crypto/sha1.h> 240 /* map standard crypto API names */ 241 #define SHA1_Init SHA1Init 242 #define SHA1_Update SHA1Update 243 #define SHA1_Final(x,y) SHA1Final((caddr_t)x, y) 244 #endif 245 246 #if defined(HAVE_SHA2) 247 #include <crypto/sha2/sha2.h> 248 #endif 249 250 #include <sys/md5.h> 251 /* map standard crypto API names */ 252 #define MD5_Init MD5Init 253 #define MD5_Update MD5Update 254 #define MD5_Final MD5Final 255 256 #endif 257