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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 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 <netinet/in.h>
     35 #include <netinet/icmp6.h>
     36 #include <inet/common.h>
     37 #include <netinet/ip6.h>
     38 #include <inet/ip.h>
     39 /*
     40  * MK_XXX Following 2 includes temporary to import ip6_rthdr_t
     41  *        definition. May not be needed if we fix ip6_dg_snd_attrs_t
     42  *        to do all extension headers in identical manner.
     43  */
     44 #include <net/if.h>
     45 #include <inet/ip6.h>
     46 
     47 #include <netinet/tcp.h>
     48 #include <netinet/ip_mroute.h>
     49 #include <inet/optcom.h>
     50 
     51 
     52 extern int icmp_opt_default(queue_t *, int, int, uchar_t *);
     53 extern int icmp_tpi_opt_get(queue_t *, int, int, uchar_t *);
     54 extern int icmp_tpi_opt_set(queue_t *, uint_t, int, int, uint_t, uchar_t *,
     55     uint_t *, uchar_t *, void *, cred_t *, mblk_t *);
     56 
     57 /*
     58  * Table of all known options handled on a ICMP protocol stack.
     59  *
     60  * Note: This table contains options processed by both ICMP and IP levels
     61  *       and is the superset of options that can be performed on a ICMP over IP
     62  *       stack.
     63  */
     64 opdes_t	icmp_opt_arr[] = {
     65 
     66 { SO_DEBUG,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     67 { SO_DONTROUTE,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     68 { SO_USELOOPBACK, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0
     69 	},
     70 { SO_BROADCAST,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     71 { SO_REUSEADDR, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     72 
     73 #ifdef	SO_PROTOTYPE
     74 	/*
     75 	 * icmp will only allow IPPROTO_ICMP for non-privileged streams
     76 	 * that check is made on an adhoc basis.
     77 	 */
     78 { SO_PROTOTYPE, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     79 #endif
     80 
     81 { SO_TYPE,	SOL_SOCKET, OA_R, OA_R, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     82 { SO_SNDBUF,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     83 { SO_RCVBUF,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
     84 { SO_SNDTIMEO,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
     85 	sizeof (struct timeval), 0 },
     86 { SO_RCVTIMEO,	SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
     87 	sizeof (struct timeval), 0 },
     88 { SO_DGRAM_ERRIND, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
     89 	0 },
     90 { SO_TIMESTAMP, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0
     91 	},
     92 { SO_MAC_EXEMPT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
     93 	0 },
     94 { SO_MAC_IMPLICIT, SOL_SOCKET, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
     95 	0 },
     96 
     97 { SO_ALLZONES, SOL_SOCKET, OA_R, OA_RW, OP_CONFIG, OP_PASSNEXT, sizeof (int),
     98 	0 },
     99 { SO_DOMAIN,	SOL_SOCKET, OA_R, OA_R, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    100 
    101 { IP_OPTIONS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP,
    102 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    103 	IP_MAX_OPT_LENGTH + IP_ADDR_LEN, -1 /* not initialized */ },
    104 { T_IP_OPTIONS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP,
    105 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    106 	IP_MAX_OPT_LENGTH + IP_ADDR_LEN, -1 /* not initialized */ },
    107 
    108 { IP_HDRINCL,	IPPROTO_IP, OA_R,  OA_RW, OP_RAW, OP_PASSNEXT,
    109 	sizeof (int), 0 },
    110 { IP_TOS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    111 { T_IP_TOS,	IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    112 { IP_TTL,	IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    113 
    114 { IP_MULTICAST_IF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    115 	sizeof (struct in_addr), 0 /* INADDR_ANY */ },
    116 
    117 { IP_MULTICAST_LOOP, IPPROTO_IP, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_DEF_FN),
    118 	sizeof (uchar_t), -1 /* not initialized */},
    119 
    120 { IP_MULTICAST_TTL, IPPROTO_IP, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_DEF_FN),
    121 	sizeof (uchar_t), -1 /* not initialized */ },
    122 
    123 { IP_ADD_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    124 	sizeof (struct ip_mreq), -1 /* not initialized */ },
    125 
    126 { IP_DROP_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    127 	sizeof (struct ip_mreq), 0 },
    128 
    129 { IP_BLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    130 	sizeof (struct ip_mreq_source), -1 },
    131 
    132 { IP_UNBLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    133 	sizeof (struct ip_mreq_source), -1 },
    134 
    135 { IP_ADD_SOURCE_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP,
    136 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct ip_mreq_source), -1 },
    137 
    138 { IP_DROP_SOURCE_MEMBERSHIP, IPPROTO_IP, OA_X, OA_X, OP_NP,
    139 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct ip_mreq_source), -1 },
    140 
    141 { IP_SEC_OPT, IPPROTO_IP, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    142 	sizeof (ipsec_req_t), -1 /* not initialized */ },
    143 
    144 { IP_BOUND_IF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    145 	sizeof (int),	0 /* no ifindex */ },
    146 
    147 { IP_UNSPEC_SRC, IPPROTO_IP, OA_R, OA_RW, OP_RAW, OP_PASSNEXT,
    148 	sizeof (int), 0 },
    149 
    150 { IP_BROADCAST_TTL, IPPROTO_IP, OA_R, OA_RW, OP_RAW, 0, sizeof (uchar_t),
    151 	0 /* disabled */ },
    152 
    153 { IP_RECVIF, IPPROTO_IP, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int), 0 },
    154 
    155 { IP_PKTINFO, IPPROTO_IP, OA_RW, OA_RW, OP_NP,
    156 	(OP_PASSNEXT|OP_NODEFAULT|OP_VARLEN),
    157 	sizeof (struct in_pktinfo), -1 /* not initialized */ },
    158 
    159 { IP_NEXTHOP, IPPROTO_IP, OA_R, OA_RW, OP_CONFIG, OP_PASSNEXT,
    160 	sizeof (in_addr_t), -1 /* not initialized */ },
    161 
    162 { MRT_INIT, IPPROTO_IP, 0, OA_X, OP_CONFIG,
    163 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (int),
    164 	-1 /* not initialized */ },
    165 
    166 { MRT_DONE, IPPROTO_IP, 0, OA_X, OP_CONFIG,
    167 	(OP_PASSNEXT|OP_NODEFAULT), 0, -1 /* not initialized */ },
    168 
    169 { MRT_ADD_VIF, IPPROTO_IP, 0, OA_X, OP_CONFIG, (OP_PASSNEXT|OP_NODEFAULT),
    170 	sizeof (struct vifctl), -1 /* not initialized */ },
    171 
    172 { MRT_DEL_VIF, 	IPPROTO_IP, 0, OA_X, OP_CONFIG, (OP_PASSNEXT|OP_NODEFAULT),
    173 	sizeof (vifi_t), -1 /* not initialized */ },
    174 
    175 { MRT_ADD_MFC, 	IPPROTO_IP, 0, OA_X, OP_CONFIG, (OP_PASSNEXT|OP_NODEFAULT),
    176 	sizeof (struct mfcctl), -1 /* not initialized */ },
    177 
    178 { MRT_DEL_MFC, 	IPPROTO_IP, 0, OA_X, OP_CONFIG, (OP_PASSNEXT|OP_NODEFAULT),
    179 	sizeof (struct mfcctl), -1 /* not initialized */ },
    180 
    181 { MRT_VERSION, 	IPPROTO_IP, OA_R, OA_R, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    182 	sizeof (int), -1 /* not initialized */ },
    183 
    184 { MRT_ASSERT, 	IPPROTO_IP, 0, OA_RW, OP_CONFIG,
    185 	(OP_PASSNEXT|OP_NODEFAULT),
    186 	sizeof (int), -1 /* not initialized */ },
    187 
    188 { MCAST_JOIN_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
    189 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_req),
    190 	-1 /* not initialized */ },
    191 { MCAST_LEAVE_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
    192 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_req),
    193 	-1 /* not initialized */ },
    194 { MCAST_BLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP,
    195 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    196 	-1 /* not initialized */ },
    197 { MCAST_UNBLOCK_SOURCE, IPPROTO_IP, OA_X, OA_X, OP_NP,
    198 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    199 	-1 /* not initialized */ },
    200 { MCAST_JOIN_SOURCE_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
    201 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    202 	-1 /* not initialized */ },
    203 { MCAST_LEAVE_SOURCE_GROUP, IPPROTO_IP, OA_X, OA_X, OP_NP,
    204 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    205 	-1 /* not initialized */ },
    206 
    207 { IPV6_MULTICAST_IF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    208 	sizeof (int), 0 },
    209 
    210 { IPV6_MULTICAST_HOPS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    211 	(OP_PASSNEXT|OP_DEF_FN), sizeof (int), -1 /* not initialized */ },
    212 
    213 { IPV6_MULTICAST_LOOP, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    214 	(OP_PASSNEXT|OP_DEF_FN), sizeof (int), -1 /* not initialized */},
    215 
    216 { IPV6_JOIN_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    217 	sizeof (struct ipv6_mreq), -1 /* not initialized */ },
    218 
    219 { IPV6_LEAVE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    220 	sizeof (struct ipv6_mreq), -1 /* not initialized */ },
    221 
    222 { IPV6_UNICAST_HOPS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_DEF_FN),
    223 	sizeof (int), -1 /* not initialized */ },
    224 
    225 { IPV6_BOUND_IF, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    226 	sizeof (int),	0 /* no ifindex */ },
    227 
    228 { IPV6_UNSPEC_SRC, IPPROTO_IPV6, OA_R, OA_RW, OP_RAW, OP_PASSNEXT,
    229 	sizeof (int), 0 },
    230 
    231 { IPV6_CHECKSUM, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT, sizeof (int),
    232 	-1 },
    233 
    234 { ICMP6_FILTER, IPPROTO_ICMPV6, OA_RW, OA_RW, OP_NP, OP_DEF_FN|OP_VARLEN,
    235 	sizeof (icmp6_filter_t), 0 },
    236 { IPV6_PKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    237 	(OP_PASSNEXT|OP_NODEFAULT|OP_VARLEN),
    238 	sizeof (struct in6_pktinfo), -1 /* not initialized */ },
    239 { IPV6_HOPLIMIT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    240 	(OP_PASSNEXT|OP_NODEFAULT|OP_VARLEN),
    241 	sizeof (int), -1 /* not initialized */ },
    242 { IPV6_NEXTHOP, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    243 	(OP_PASSNEXT|OP_NODEFAULT|OP_VARLEN),
    244 	sizeof (sin6_t), -1 /* not initialized */ },
    245 { IPV6_HOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    246 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    247 	MAX_EHDR_LEN, -1 /* not initialized */ },
    248 { IPV6_DSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    249 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    250 	MAX_EHDR_LEN, -1 /* not initialized */ },
    251 { IPV6_RTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    252 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    253 	MAX_EHDR_LEN, -1 /* not initialized */ },
    254 { IPV6_RTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    255 	(OP_PASSNEXT|OP_VARLEN|OP_NODEFAULT),
    256 	MAX_EHDR_LEN, -1 /* not initialized */ },
    257 { IPV6_TCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP,
    258 	(OP_PASSNEXT|OP_NODEFAULT|OP_VARLEN),
    259 	sizeof (int), -1 /* not initialized */ },
    260 { IPV6_PATHMTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    261 	sizeof (struct ip6_mtuinfo), -1 },
    262 { IPV6_DONTFRAG, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    263 	sizeof (int), 0 },
    264 { IPV6_USE_MIN_MTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    265 	sizeof (int), 0 },
    266 { IPV6_V6ONLY, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    267 	sizeof (int), 0 },
    268 
    269 { IPV6_RECVPKTINFO, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    270 	sizeof (int), 0 },
    271 { IPV6_RECVHOPLIMIT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    272 	sizeof (int), 0 },
    273 { IPV6_RECVHOPOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    274 	sizeof (int), 0 },
    275 { _OLD_IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    276 	sizeof (int), 0 },
    277 { IPV6_RECVDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    278 	sizeof (int), 0 },
    279 { IPV6_RECVRTHDR, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    280 	sizeof (int), 0 },
    281 { IPV6_RECVRTHDRDSTOPTS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    282 	sizeof (int), 0 },
    283 { IPV6_RECVPATHMTU, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    284 	sizeof (int), 0 },
    285 { IPV6_RECVTCLASS, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    286 	sizeof (int), 0 },
    287 
    288 { IPV6_SEC_OPT, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, (OP_PASSNEXT|OP_NODEFAULT),
    289 	sizeof (ipsec_req_t), -1 /* not initialized */ },
    290 { IPV6_SRC_PREFERENCES, IPPROTO_IPV6, OA_RW, OA_RW, OP_NP, OP_PASSNEXT,
    291 	sizeof (uint32_t), IPV6_PREFER_SRC_DEFAULT },
    292 
    293 { MCAST_JOIN_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
    294 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_req),
    295 	-1 /* not initialized */ },
    296 { MCAST_LEAVE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
    297 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_req),
    298 	-1 /* not initialized */ },
    299 { MCAST_BLOCK_SOURCE, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
    300 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    301 	-1 /* not initialized */ },
    302 { MCAST_UNBLOCK_SOURCE, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
    303 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    304 	-1 /* not initialized */ },
    305 { MCAST_JOIN_SOURCE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
    306 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    307 	-1 /* not initialized */ },
    308 { MCAST_LEAVE_SOURCE_GROUP, IPPROTO_IPV6, OA_X, OA_X, OP_NP,
    309 	(OP_PASSNEXT|OP_NODEFAULT), sizeof (struct group_source_req),
    310 	-1 /* not initialized */ },
    311 };
    312 
    313 /*
    314  * Table of all supported levels
    315  * Note: Some levels (e.g. XTI_GENERIC) may be valid but may not have
    316  * any supported options so we need this info separately.
    317  *
    318  * This is needed only for topmost tpi providers and is used only by
    319  * XTI interfaces.
    320  */
    321 optlevel_t	icmp_valid_levels_arr[] = {
    322 	XTI_GENERIC,
    323 	SOL_SOCKET,
    324 	IPPROTO_ICMP,
    325 	IPPROTO_IP,
    326 	IPPROTO_IPV6,
    327 	IPPROTO_ICMPV6
    328 };
    329 
    330 #define	ICMP_VALID_LEVELS_CNT	A_CNT(icmp_valid_levels_arr)
    331 #define	ICMP_OPT_ARR_CNT		A_CNT(icmp_opt_arr)
    332 
    333 uint_t	icmp_max_optsize; /* initialized when ICMP driver is loaded */
    334 
    335 /*
    336  * Initialize option database object for ICMP
    337  *
    338  * This object represents database of options to search passed to
    339  * {sock,tpi}optcom_req() interface routine to take care of option
    340  * management and associated methods.
    341  */
    342 
    343 optdb_obj_t icmp_opt_obj = {
    344 	icmp_opt_default,	/* ICMP default value function pointer */
    345 	icmp_tpi_opt_get,		/* ICMP get function pointer */
    346 	icmp_tpi_opt_set,		/* ICMP set function pointer */
    347 	B_TRUE,			/* ICMP is tpi provider */
    348 	ICMP_OPT_ARR_CNT,	/* ICMP option database count of entries */
    349 	icmp_opt_arr,		/* ICMP option database */
    350 	ICMP_VALID_LEVELS_CNT,	/* ICMP valid level count of entries */
    351 	icmp_valid_levels_arr	/* ICMP valid level array */
    352 };
    353