1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/stream.h> 28 #define _SUN_TPI_VERSION 2 29 #include <sys/tihdr.h> 30 #include <sys/socket.h> 31 #include <sys/xti_xtiopt.h> 32 #include <sys/xti_inet.h> 33 34 #include <inet/common.h> 35 #include <netinet/ip6.h> 36 #include <inet/ip.h> 37 38 #include <netinet/in.h> 39 #include <netinet/tcp.h> 40 #include <inet/optcom.h> 41 42 #include <inet/tcp_impl.h> 43 44 /* 45 * Table of all known options handled on a TCP protocol stack. 46 * 47 * Note: This table contains options processed by both TCP and IP levels 48 * and is the superset of options that can be performed on a TCP over IP 49 * stack. 50 */ 51 opdes_t tcp_opt_arr[] = { 52 53 { SO_LINGER, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, 54 sizeof (struct linger), 0 }, 55 56 { SO_DEBUG, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 57 { SO_KEEPALIVE, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 58 { SO_DONTROUTE, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 59 { SO_USELOOPBACK, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 60 }, 61 { SO_BROADCAST, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 62 { SO_REUSEADDR, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 63 { SO_OOBINLINE, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 64 { SO_TYPE, SOL_SOCKET, OA_R, OA_R, OP_NP, 0, sizeof (int), 0 }, 65 { SO_SNDBUF, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 66 { SO_RCVBUF, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 67 { SO_SNDTIMEO, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, 68 sizeof (struct timeval), 0 }, 69 { SO_RCVTIMEO, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, 70 sizeof (struct timeval), 0 }, 71 { SO_DGRAM_ERRIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 72 }, 73 { SO_SND_COPYAVOID, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 74 { SO_ANON_MLP, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 75 0 }, 76 { SO_MAC_EXEMPT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 77 0 }, 78 { SO_MAC_IMPLICIT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 79 0 }, 80 { SO_ALLZONES, SOL_SOCKET, OA_R, OA_RW, OP_CONFIG, 0, sizeof (int), 81 0 }, 82 { SO_EXCLBIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 83 84 { SO_DOMAIN, SOL_SOCKET, OA_R, OA_R, OP_NP, 0, sizeof (int), 0 }, 85 86 { SO_PROTOTYPE, SOL_SOCKET, OA_R, OA_R, OP_NP, 0, sizeof (int), 0 }, 87 88 { TCP_NODELAY, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 89 }, 90 { TCP_MAXSEG, IPPROTO_TCP, OA_R, OA_R, OP_NP, 0, sizeof (uint_t), 91 536 }, 92 93 { TCP_NOTIFY_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 94 OP_DEF_FN, sizeof (int), -1 /* not initialized */ }, 95 96 { TCP_ABORT_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 97 OP_DEF_FN, sizeof (int), -1 /* not initialized */ }, 98 99 { TCP_CONN_NOTIFY_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 100 OP_DEF_FN, sizeof (int), -1 /* not initialized */ }, 101 102 { TCP_CONN_ABORT_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 103 OP_DEF_FN, sizeof (int), -1 /* not initialized */ }, 104 105 { TCP_RECVDSTADDR, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 106 0 }, 107 108 { TCP_ANONPRIVBIND, IPPROTO_TCP, OA_R, OA_RW, OP_PRIVPORT, 0, 109 sizeof (int), 0 }, 110 111 { TCP_EXCLBIND, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 112 }, 113 114 { TCP_INIT_CWND, IPPROTO_TCP, OA_RW, OA_RW, OP_CONFIG, 0, 115 sizeof (int), 0 }, 116 117 { TCP_KEEPALIVE_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 0, 118 sizeof (int), 0 }, 119 120 { TCP_KEEPALIVE_ABORT_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 0, 121 sizeof (int), 0 }, 122 123 { TCP_CORK, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 124 125 { IP_OPTIONS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 126 (OP_VARLEN|OP_NODEFAULT), 127 IP_MAX_OPT_LENGTH + IP_ADDR_LEN, -1 /* not initialized */ }, 128 { T_IP_OPTIONS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 129 (OP_VARLEN|OP_NODEFAULT), 130 IP_MAX_OPT_LENGTH + IP_ADDR_LEN, -1 /* not initialized */ }, 131 132 { IP_TOS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 133 { T_IP_TOS, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 134 { IP_TTL, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_DEF_FN, 135 sizeof (int), -1 /* not initialized */ }, 136 137 { IP_SEC_OPT, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_NODEFAULT, 138 sizeof (ipsec_req_t), -1 /* not initialized */ }, 139 140 { IP_BOUND_IF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, 141 sizeof (int), 0 /* no ifindex */ }, 142 143 { IP_UNSPEC_SRC, IPPROTO_IP, OA_R, OA_RW, OP_RAW, 0, 144 sizeof (int), 0 }, 145 146 { IPV6_UNICAST_HOPS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_DEF_FN, 147 sizeof (int), -1 /* not initialized */ }, 148 149 { IPV6_BOUND_IF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 150 sizeof (int), 0 /* no ifindex */ }, 151 152 { IP_DONTFRAG, IPPROTO_IP, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 }, 153 154 { IP_NEXTHOP, IPPROTO_IP, OA_R, OA_RW, OP_CONFIG, 0, 155 sizeof (in_addr_t), -1 /* not initialized */ }, 156 157 { IPV6_UNSPEC_SRC, IPPROTO_IPV6, OA_R, OA_RW, OP_RAW, 0, 158 sizeof (int), 0 }, 159 160 { IPV6_PKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 161 (OP_NODEFAULT|OP_VARLEN), 162 sizeof (struct in6_pktinfo), -1 /* not initialized */ }, 163 { IPV6_NEXTHOP, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 164 OP_NODEFAULT, 165 sizeof (sin6_t), -1 /* not initialized */ }, 166 { IPV6_HOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 167 (OP_VARLEN|OP_NODEFAULT), 255*8, 168 -1 /* not initialized */ }, 169 { IPV6_DSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 170 (OP_VARLEN|OP_NODEFAULT), 255*8, 171 -1 /* not initialized */ }, 172 { IPV6_RTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 173 (OP_VARLEN|OP_NODEFAULT), 255*8, 174 -1 /* not initialized */ }, 175 { IPV6_RTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 176 (OP_VARLEN|OP_NODEFAULT), 255*8, 177 -1 /* not initialized */ }, 178 { IPV6_TCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 179 OP_NODEFAULT, 180 sizeof (int), -1 /* not initialized */ }, 181 { IPV6_PATHMTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 182 OP_NODEFAULT, 183 sizeof (struct ip6_mtuinfo), -1 /* not initialized */ }, 184 { IPV6_DONTFRAG, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 185 sizeof (int), 0 }, 186 { IPV6_USE_MIN_MTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 187 sizeof (int), 0 }, 188 { IPV6_V6ONLY, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 189 sizeof (int), 0 }, 190 191 /* Enable receipt of ancillary data */ 192 { IPV6_RECVPKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 193 sizeof (int), 0 }, 194 { IPV6_RECVHOPLIMIT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 195 sizeof (int), 0 }, 196 { IPV6_RECVHOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 197 sizeof (int), 0 }, 198 { _OLD_IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 199 sizeof (int), 0 }, 200 { IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 201 sizeof (int), 0 }, 202 { IPV6_RECVRTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 203 sizeof (int), 0 }, 204 { IPV6_RECVRTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 205 sizeof (int), 0 }, 206 { IPV6_RECVTCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 207 sizeof (int), 0 }, 208 209 { IPV6_SEC_OPT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_NODEFAULT, 210 sizeof (ipsec_req_t), -1 /* not initialized */ }, 211 { IPV6_SRC_PREFERENCES, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, 0, 212 sizeof (uint32_t), IPV6_PREFER_SRC_DEFAULT }, 213 }; 214 215 /* 216 * Table of all supported levels 217 * Note: Some levels (e.g. XTI_GENERIC) may be valid but may not have 218 * any supported options so we need this info separately. 219 * 220 * This is needed only for topmost tpi providers and is used only by 221 * XTI interfaces. 222 */ 223 optlevel_t tcp_valid_levels_arr[] = { 224 XTI_GENERIC, 225 SOL_SOCKET, 226 IPPROTO_TCP, 227 IPPROTO_IP, 228 IPPROTO_IPV6 229 }; 230 231 232 #define TCP_OPT_ARR_CNT A_CNT(tcp_opt_arr) 233 #define TCP_VALID_LEVELS_CNT A_CNT(tcp_valid_levels_arr) 234 235 uint_t tcp_max_optsize; /* initialized when TCP driver is loaded */ 236 237 /* 238 * Initialize option database object for TCP 239 * 240 * This object represents database of options to search passed to 241 * {sock,tpi}optcom_req() interface routine to take care of option 242 * management and associated methods. 243 */ 244 245 optdb_obj_t tcp_opt_obj = { 246 tcp_opt_default, /* TCP default value function pointer */ 247 tcp_tpi_opt_get, /* TCP get function pointer */ 248 tcp_tpi_opt_set, /* TCP set function pointer */ 249 TCP_OPT_ARR_CNT, /* TCP option database count of entries */ 250 tcp_opt_arr, /* TCP option database */ 251 TCP_VALID_LEVELS_CNT, /* TCP valid level count of entries */ 252 tcp_valid_levels_arr /* TCP valid level array */ 253 }; 254