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      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 2007 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     27 
     28 #include <sys/types.h>
     29 #include <sys/stream.h>
     30 #define	_SUN_TPI_VERSION 2
     31 #include <sys/tihdr.h>
     32 #include <sys/socket.h>
     33 #include <sys/xti_xtiopt.h>
     34 #include <sys/xti_inet.h>
     35 
     36 #include <inet/common.h>
     37 #include <netinet/ip6.h>
     38 #include <inet/ip.h>
     39 
     40 #include <netinet/in.h>
     41 #include <netinet/tcp.h>
     42 #include <inet/optcom.h>
     43 
     44 
     45 extern int	tcp_opt_default(queue_t *q, int level, int name, uchar_t *ptr);
     46 extern int	tcp_opt_get(queue_t *q, int level, int name, uchar_t *ptr);
     47 extern int	tcp_opt_set(queue_t *q, uint_t optset_context, int level,
     48     int name, uint_t inlen, uchar_t *invalp, uint_t *outlenp, uchar_t *outvalp,
     49     void *thisdg_attrs, cred_t *cr, mblk_t *mblk);
     50 
     51 /*
     52  * Table of all known options handled on a TCP protocol stack.
     53  *
     54  * Note: This table contains options processed by both TCP and IP levels
     55  *       and is the superset of options that can be performed on a TCP over IP
     56  *       stack.
     57  */
     58 opdes_t	tcp_opt_arr[] = {
     59 
     60 { SO_LINGER,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
     61 	sizeof (struct linger), 0 },
     62 
     63 { SO_DEBUG,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     64 { SO_KEEPALIVE,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     65 { SO_DONTROUTE,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     66 { SO_USELOOPBACK, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0
     67 	},
     68 { SO_BROADCAST,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     69 { SO_REUSEADDR, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     70 { SO_OOBINLINE, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     71 { SO_TYPE,	SOL_SOCKET, OA_R, OA_R, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     72 { SO_SNDBUF,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     73 { SO_RCVBUF,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     74 { SO_DGRAM_ERRIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0
     75 	},
     76 { SO_SND_COPYAVOID, SOL_SOCKET, OA_RW, OA_RW, OP_NP, 0, sizeof (int), 0 },
     77 { SO_ANON_MLP, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
     78 	0 },
     79 { SO_MAC_EXEMPT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
     80 	0 },
     81 { SO_ALLZONES, SOL_SOCKET, OA_R, OA_RW, OP_CONFIG, OP_PASSNEXT, sizeof (int),
     82 	0 },
     83 { SO_EXCLBIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     84 
     85 { SO_DOMAIN,	SOL_SOCKET, OA_R, OA_R, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     86 
     87 { SO_PROTOTYPE,	SOL_SOCKET, OA_R, OA_R, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     88 
     89 { TCP_NODELAY,	IPPROTO_TCP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0
     90 	},
     91 { TCP_MAXSEG,	IPPROTO_TCP, OA_R, OA_R, OP_NP, OP_PASSNEXT, sizeof (uint_t),
     92 	536 },
     93 
     94 { TCP_NOTIFY_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP,
     95 	(OP_PASSNEXT|OP_DEF_FN), sizeof (int), -1 /* not initialized */ },
     96 
     97 { TCP_ABORT_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP,
     98 	(OP_PASSNEXT|OP_DEF_FN), sizeof (int), -1 /* not initialized */ },
     99 
    100 { TCP_CONN_NOTIFY_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP,
    101 	(OP_PASSNEXT|OP_DEF_FN), sizeof (int), -1 /* not initialized */ },
    102 
    103 { TCP_CONN_ABORT_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP,
    104 	(OP_PASSNEXT|OP_DEF_FN), sizeof (int), -1 /* not initialized */ },
    105 
    106 { TCP_RECVDSTADDR, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
    107 	0 },
    108 
    109 { TCP_ANONPRIVBIND, IPPROTO_TCP, OA_R, OA_RW, OP_PRIVPORT, OP_PASSNEXT,
    110 	sizeof (int), 0 },
    111 
    112 { TCP_EXCLBIND, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0
    113 	},
    114 
    115 { TCP_INIT_CWND, IPPROTO_TCP, OA_RW, OA_RW, OP_CONFIG, OP_PASSNEXT,
    116 	sizeof (int), 0 },
    117 
    118 { TCP_KEEPALIVE_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    119 	sizeof (int), 0	},
    120 
    121 { TCP_KEEPALIVE_ABORT_THRESHOLD, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    122 	sizeof (int), 0	},
    123 
    124 { TCP_CORK, IPPROTO_TCP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    125 
    126 { IP_OPTIONS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP,
    127 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    128 	40, -1 /* not initialized */ },
    129 { T_IP_OPTIONS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP,
    130 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    131 	40, -1 /* not initialized */ },
    132 
    133 { IP_TOS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    134 { T_IP_TOS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    135 { IP_TTL,	IPPROTO_IP, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_DEF_FN),
    136 	sizeof (int), -1 /* not initialized */ },
    137 
    138 { IP_SEC_OPT, IPPROTO_IP, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    139 	sizeof (ipsec_req_t), -1 /* not initialized */ },
    140 
    141 { IP_BOUND_IF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    142 	sizeof (int),	0 /* no ifindex */ },
    143 
    144 { IP_UNSPEC_SRC, IPPROTO_IP, OA_R, OA_RW, OP_RAW, OP_PASSNEXT,
    145 	sizeof (int), 0 },
    146 
    147 { IPV6_UNICAST_HOPS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_DEF_FN),
    148 	sizeof (int), -1 /* not initialized */ },
    149 
    150 { IPV6_BOUND_IF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    151 	sizeof (int),	0 /* no ifindex */ },
    152 
    153 { IP_NEXTHOP, IPPROTO_IP, OA_R, OA_RW, OP_CONFIG, OP_PASSNEXT,
    154 	sizeof (in_addr_t),	-1 /* not initialized  */ },
    155 
    156 { IPV6_BOUND_PIF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    157 	sizeof (int),	0 /* no ifindex */ },
    158 
    159 { IPV6_UNSPEC_SRC, IPPROTO_IPV6, OA_R, OA_RW, OP_RAW, OP_PASSNEXT,
    160 	sizeof (int), 0 },
    161 
    162 { IPV6_PKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    163 	(OP_PASSNEXT|OP_NODEFAULT|OP_VARLEN),
    164 	sizeof (struct in6_pktinfo), -1 /* not initialized */ },
    165 { IPV6_NEXTHOP, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    166 	(OP_PASSNEXT|OP_NODEFAULT),
    167 	sizeof (sin6_t), -1 /* not initialized */ },
    168 { IPV6_HOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    169 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT), 255*8,
    170 	-1 /* not initialized */ },
    171 { IPV6_DSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    172 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT), 255*8,
    173 	-1 /* not initialized */ },
    174 { IPV6_RTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    175 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT), 255*8,
    176 	-1 /* not initialized */ },
    177 { IPV6_RTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    178 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT), 255*8,
    179 	-1 /* not initialized */ },
    180 { IPV6_TCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    181 	(OP_PASSNEXT|OP_NODEFAULT),
    182 	sizeof (int), -1 /* not initialized */ },
    183 { IPV6_PATHMTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    184 	(OP_PASSNEXT|OP_NODEFAULT),
    185 	sizeof (struct ip6_mtuinfo), -1 /* not initialized */ },
    186 { IPV6_USE_MIN_MTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    187 	sizeof (int), 0 },
    188 { IPV6_V6ONLY, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    189 	sizeof (int), 0 },
    190 
    191 /* Enable receipt of ancillary data */
    192 { IPV6_RECVPKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    193 	sizeof (int), 0 },
    194 { IPV6_RECVHOPLIMIT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    195 	sizeof (int), 0 },
    196 { IPV6_RECVHOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    197 	sizeof (int), 0 },
    198 { _OLD_IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    199 	sizeof (int), 0 },
    200 { IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    201 	sizeof (int), 0 },
    202 { IPV6_RECVRTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    203 	sizeof (int), 0 },
    204 { IPV6_RECVRTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    205 	sizeof (int), 0 },
    206 { IPV6_RECVTCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    207 	sizeof (int), 0 },
    208 
    209 { IPV6_SEC_OPT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    210 	sizeof (ipsec_req_t), -1 /* not initialized */ },
    211 { IPV6_SRC_PREFERENCES, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    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_opt_get,		/* TCP get function pointer */
    248 	tcp_opt_set,		/* TCP set function pointer */
    249 	B_TRUE,			/* TCP is tpi provider */
    250 	TCP_OPT_ARR_CNT,	/* TCP option database count of entries */
    251 	tcp_opt_arr,		/* TCP option database */
    252 	TCP_VALID_LEVELS_CNT,	/* TCP valid level count of entries */
    253 	tcp_valid_levels_arr	/* TCP valid level array */
    254 };
    255