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 #ifndef _INET_IP6_ASP_H 27 #define _INET_IP6_ASP_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #include <netinet/in.h> 36 #include <sys/types.h> 37 #include <inet/ip6.h> 38 39 /* 40 * The maximum size of the label, including NULL bytes following the 41 * label string. The implementation assumes that this value is 16. 42 */ 43 #define IP6_ASP_MAXLABELSIZE 16 44 45 typedef struct ip6_asp { 46 in6_addr_t ip6_asp_prefix; 47 in6_addr_t ip6_asp_mask; 48 /* 49 * ip6_asp_label must be on an 8 byte boundary because we cast 50 * them as (int64_t *) in order to compare them as two 64 bit 51 * integers rather than sixteen characters. 52 */ 53 union { 54 char iau_label_c[IP6_ASP_MAXLABELSIZE]; 55 int64_t iau_label_i[IP6_ASP_MAXLABELSIZE / sizeof (int64_t)]; 56 } ip6_asp_u; 57 uint32_t ip6_asp_precedence; 58 } ip6_asp_t; 59 #define ip6_asp_label ip6_asp_u.iau_label_c 60 61 #if defined(_SYSCALL32) && _LONG_LONG_ALIGNMENT_32 == 4 62 63 /* 64 * The ip6_asp structure as seen by a 64-bit kernel looking 65 * at a 32-bit process, where the 32-bit process uses 32-bit 66 * alignment for 64-bit quantities. Like i386 does :-) 67 */ 68 typedef struct ip6_asp32 { 69 in6_addr_t ip6_asp_prefix; 70 in6_addr_t ip6_asp_mask; 71 union { 72 char iau_label_c[IP6_ASP_MAXLABELSIZE]; 73 int32_t iau_label_i[IP6_ASP_MAXLABELSIZE / sizeof (int32_t)]; 74 } ip6_asp_u; 75 uint32_t ip6_asp_precedence; 76 } ip6_asp32_t; 77 78 #endif /* _SYSCALL32 && _LONG_LONG_ALIGNMENT_32 == 4 */ 79 80 #define IP6_ASP_TABLE_REFHOLD(ipst) { \ 81 ipst->ips_ip6_asp_refcnt++; \ 82 ASSERT(ipst->ips_ip6_asp_refcnt != 0); \ 83 } 84 85 #define IP6_ASP_TABLE_REFRELE(ipst) { \ 86 mutex_enter(&ipst->ips_ip6_asp_lock); \ 87 ASSERT(ipst->ips_ip6_asp_refcnt != 0); \ 88 if (--ipst->ips_ip6_asp_refcnt == 0) { \ 89 mutex_exit(&ipst->ips_ip6_asp_lock); \ 90 ip6_asp_check_for_updates(ipst); \ 91 } else { \ 92 mutex_exit(&ipst->ips_ip6_asp_lock); \ 93 } \ 94 } 95 96 /* 97 * Structure used in the SIOCGDSTINFO request. 98 * Used to retrieve information about the given destination 99 * address, to be used by the caller to sort a list of 100 * potential destination addresses. 101 */ 102 struct dstinforeq { 103 in6_addr_t dir_daddr; /* destination address */ 104 in6_addr_t dir_saddr; /* source address for daddr */ 105 in6addr_scope_t dir_dscope; /* destination scope */ 106 in6addr_scope_t dir_sscope; /* source scope */ 107 t_uscalar_t dir_dmactype; /* dl_mac_type of output inf */ 108 uint32_t dir_precedence; /* destination precedence */ 109 uint8_t dir_dreachable : 1, /* is destination reachable? */ 110 dir_sdeprecated : 1, /* is source deprecated? */ 111 dir_labelmatch: 1, /* src and dst labels match? */ 112 dir_padbits : 5; 113 }; 114 115 #ifdef _KERNEL 116 117 typedef void (*aspfunc_t)(ipsq_t *, queue_t *, mblk_t *, void *); 118 119 extern void ip6_asp_free(ip_stack_t *); 120 extern void ip6_asp_init(ip_stack_t *); 121 extern boolean_t ip6_asp_can_lookup(ip_stack_t *); 122 extern void ip6_asp_table_refrele(ip_stack_t *); 123 extern char *ip6_asp_lookup(const in6_addr_t *, uint32_t *, ip_stack_t *); 124 extern void ip6_asp_replace(mblk_t *mp, ip6_asp_t *, size_t, boolean_t, 125 ip_stack_t *, model_t); 126 extern int ip6_asp_get(ip6_asp_t *, size_t, ip_stack_t *); 127 extern boolean_t ip6_asp_labelcmp(const char *, const char *); 128 extern void ip6_asp_pending_op(queue_t *, mblk_t *, aspfunc_t); 129 130 #endif /* _KERNEL */ 131 132 #ifdef __cplusplus 133 } 134 #endif 135 136 #endif /* _INET_IP6_ASP_H */ 137