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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SOCKSCTP_H_ 27 #define _SOCKSCTP_H_ 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* 34 * SCTP socket structure. 35 * 36 * The opaque pointer passed in upcalls is either a pointer to sctp_sonode, 37 * or sctp_soassoc. The identification is done through the first element 38 * in data structure (if it cannot be identified by upcall which gets called). 39 */ 40 struct sctp_sonode { 41 int ss_type; /* sonode or soassoc */ 42 struct sonode ss_so; 43 struct sockaddr_in6 ss_laddr; /* can fit both v4 & v6 */ 44 struct sockaddr_in6 ss_faddr; 45 sctp_assoc_t ss_maxassoc; /* assoc array size for 1-N */ 46 sctp_assoc_t ss_assoccnt; /* current # of assocs */ 47 struct sctp_sa_id *ss_assocs; /* assoc array for 1-N */ 48 #define ss_wroff ss_so.so_proto_props.sopp_wroff 49 #define ss_wrsize ss_so.so_proto_props.sopp_maxblk 50 }; 51 52 /* 53 * Association for 1-N sockets. 54 */ 55 struct sctp_soassoc { 56 int ssa_type; 57 sctp_assoc_t ssa_id; /* association ID */ 58 uint_t ssa_refcnt; 59 struct sctp_sonode *ssa_sonode; 60 struct sctp_s *ssa_conn; /* opaque ptr passed to SCTP */ 61 uint_t ssa_state; /* same as so_state */ 62 int ssa_error; /* same as so_error */ 63 boolean_t ssa_snd_qfull; 64 int ssa_wroff; 65 size_t ssa_wrsize; 66 int ssa_rcv_queued; /* queued rx bytes/# of conn */ 67 }; 68 69 /* 1-N socket association cache defined in socksctp.c */ 70 71 /* 72 * Association array element. 73 * 74 * Association data structures for 1-N socket are stored in 75 * an array in similar manner to file descriptor array. 76 * Each association is identified by its association ID, which also 77 * is used as an index to this array (again, like file descriptor number). 78 */ 79 struct sctp_sa_id { 80 sctp_assoc_t ssi_alloc; 81 struct sctp_soassoc *ssi_assoc; 82 }; 83 84 extern sonodeops_t sosctp_sonodeops; 85 extern sonodeops_t sosctp_seq_sonodeops; 86 extern sock_upcalls_t sosctp_sock_upcalls; 87 extern sock_upcalls_t sosctp_assoc_upcalls; 88 89 extern struct sonode *socksctp_create(struct sockparams *, int, int, 90 int, int, int, int *, cred_t *); 91 extern void sosctp_fini(struct sonode *, struct cred *); 92 extern int sosctp_aid_grow(struct sctp_sonode *ss, sctp_assoc_t maxid, 93 int kmflags); 94 extern sctp_assoc_t sosctp_aid_get(struct sctp_sonode *ss); 95 extern void sosctp_aid_reserve(struct sctp_sonode *ss, sctp_assoc_t id, 96 int incr); 97 extern struct cmsghdr *sosctp_find_cmsg(const uchar_t *control, socklen_t clen, 98 int type); 99 extern void sosctp_pack_cmsg(const uchar_t *, struct nmsghdr *, int); 100 101 extern int sosctp_assoc(struct sctp_sonode *ss, sctp_assoc_t id, 102 struct sctp_soassoc **ssa); 103 extern struct sctp_soassoc *sosctp_assoc_create(struct sctp_sonode *ss, 104 int kmflags); 105 extern void sosctp_assoc_free(struct sctp_sonode *ss, struct sctp_soassoc *ssa); 106 extern int sosctp_assoc_createconn(struct sctp_sonode *ss, 107 const struct sockaddr *name, socklen_t namelen, 108 const uchar_t *control, socklen_t controllen, int fflag, struct cred *, 109 struct sctp_soassoc **ssap); 110 extern void sosctp_assoc_move(struct sctp_sonode *ss, struct sctp_sonode *nss, 111 struct sctp_soassoc *ssa); 112 extern void sosctp_so_inherit(struct sctp_sonode *lss, struct sctp_sonode *nss); 113 114 extern void sosctp_assoc_isconnecting(struct sctp_soassoc *ssa); 115 extern void sosctp_assoc_isconnected(struct sctp_soassoc *ssa); 116 extern void sosctp_assoc_isdisconnecting(struct sctp_soassoc *ssa); 117 extern void sosctp_assoc_isdisconnected(struct sctp_soassoc *ssa, int error); 118 119 extern int sosctp_waitconnected(struct sonode *so, int fmode); 120 extern int sosctp_uiomove(mblk_t *hdr_mp, ssize_t count, ssize_t blk_size, 121 int wroff, struct uio *uiop, int flags, cred_t *cr); 122 123 /* 124 * Data structure types. 125 */ 126 #define SOSCTP_SOCKET 0x1 127 #define SOSCTP_ASSOC 0x2 128 129 #define SOTOSSO(so) ((struct sctp_sonode *)(((char *)so) - \ 130 offsetof(struct sctp_sonode, ss_so))) 131 132 #define SSA_REFHOLD(ssa) \ 133 { \ 134 ASSERT(MUTEX_HELD(&(ssa)->ssa_sonode->ss_so.so_lock)); \ 135 ASSERT((ssa)->ssa_refcnt > 0); \ 136 ++(ssa)->ssa_refcnt; \ 137 dprint(3, ("ssa_refhold on %p %d (%s,%d)\n", \ 138 (void *)(ssa), (ssa)->ssa_refcnt, \ 139 __FILE__, __LINE__)); \ 140 } 141 142 143 #define SSA_REFRELE(ss, ssa) \ 144 { \ 145 dprint(3, ("ssa_refrele on %p %d (%s, %d)\n", \ 146 (void *)(ssa), \ 147 (ssa)->ssa_refcnt-1, __FILE__, __LINE__)); \ 148 ASSERT((ssa)->ssa_refcnt > 0); \ 149 if (--(ssa)->ssa_refcnt == 0) { \ 150 sosctp_assoc_free(ss, ssa); \ 151 } \ 152 } 153 154 #ifdef __cplusplus 155 } 156 #endif 157 158 #endif /* _SOCKSCTP_H_ */ 159