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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 #ifndef	_INET_SCTP_ITF_H
     27 #define	_INET_SCTP_ITF_H
     28 
     29 #ifdef __cplusplus
     30 extern "C" {
     31 #endif
     32 
     33 #include <netinet/sctp.h>
     34 
     35 /*
     36  * Kernel SCTP programming interface.  Note that this interface
     37  * is private to Sun and can be changed without notice.
     38  */
     39 
     40 #ifdef _KERNEL
     41 
     42 /*
     43  * The version number of the SCTP kernel interface.  Use it with
     44  * sctp_itf_ver() to verify if the kernel supports the correct
     45  * version of the interface.
     46  *
     47  * NOTE: do not assume backward compatibility of the interface.
     48  * If the return value of sctp_itf_ver() is different from what
     49  * is expected, do not call any of the routines.
     50  */
     51 #define	SCTP_ITF_VER	2
     52 
     53 /*
     54  * This struct holds various flow control limits the caller of
     55  * sctp_create() should observe when interacting with SCTP.
     56  */
     57 typedef struct sctp_sockbuf_limits_s {
     58 	int sbl_rxbuf;
     59 	int sbl_rxlowat;
     60 	int sbl_txbuf;
     61 	int sbl_txlowat;
     62 } sctp_sockbuf_limits_t;
     63 
     64 /*
     65  * Parameter to SCTP_UC_SWAP setsockopt
     66  */
     67 struct sock_upcalls_s;
     68 struct sctp_uc_swap {
     69 	void			*sus_handle;
     70 	struct sock_upcalls_s	*sus_upcalls;
     71 };
     72 
     73 struct sctp_s;
     74 
     75 /*
     76  * The list of routines the SCTP kernel module provides.
     77  */
     78 extern mblk_t *sctp_alloc_hdr(const char *name, int namelen,
     79     const char *control, int controllen, int flags);
     80 extern int sctp_bind(struct sctp_s *conn, struct sockaddr *addr,
     81     socklen_t addrlen);
     82 extern int sctp_bindx(struct sctp_s *conn, const void *addrs, int addrcnt,
     83     int flags);
     84 extern void sctp_close(struct sctp_s *conn);
     85 extern int sctp_connect(struct sctp_s *conn, const struct sockaddr *dst,
     86     socklen_t addrlen, cred_t *cr, pid_t pid);
     87 extern struct sctp_s *sctp_create(void *newhandle, struct sctp_s *parent,
     88     int family, int type, int flags, struct sock_upcalls_s *su,
     89     sctp_sockbuf_limits_t *sbl, cred_t *cr);
     90 extern int sctp_disconnect(struct sctp_s *conn);
     91 extern int sctp_get_opt(struct sctp_s *conn, int level, int opt, void *opts,
     92     socklen_t *optlen);
     93 extern int sctp_getpeername(struct sctp_s *conn, struct sockaddr *addr,
     94     socklen_t *addrlen);
     95 extern int sctp_getsockname(struct sctp_s *conn, struct sockaddr *addr,
     96     socklen_t *addrlen);
     97 extern int sctp_itf_ver(int);
     98 extern int sctp_listen(struct sctp_s *conn);
     99 extern void sctp_recvd(struct sctp_s *conn, int len);
    100 extern int sctp_sendmsg(struct sctp_s *conn, mblk_t *mp, int flags);
    101 extern int sctp_set_opt(struct sctp_s *conn, int level, int opt,
    102     const void *opts, socklen_t optlen);
    103 
    104 /* Flags for sctp_create(), sctp_alloc_hdr() */
    105 #define	SCTP_CAN_BLOCK			0x01
    106 
    107 /* Flags for upcall su_recv() */
    108 #define	SCTP_NOTIFICATION		0x01	/* message is a notification */
    109 #define	SCTP_PARTIAL_DATA		0x02	/* not a full message */
    110 
    111 /* Use by sockfs to do sctp_peeloff(). */
    112 #define	SCTP_UC_SWAP			255
    113 
    114 /*
    115  * The following are private interfaces between Solaris SCTP and SunCluster.
    116  * Hence, these interfaces are only for use by SunCluster and are *not* part
    117  * of the general SCTP kernel interface.
    118  */
    119 
    120 typedef uintptr_t cl_sctp_handle_t;
    121 
    122 typedef struct cl_sctp_info_s {
    123 	ushort_t		cl_sctpi_version;
    124 	ushort_t		cl_sctpi_family;
    125 	ushort_t		cl_sctpi_ipversion;
    126 	int32_t			cl_sctpi_state;
    127 	in_port_t		cl_sctpi_lport;
    128 	in_port_t		cl_sctpi_fport;
    129 	uint_t			cl_sctpi_nladdr;
    130 	uchar_t			*cl_sctpi_laddrp;
    131 	uint_t			cl_sctpi_nfaddr;
    132 	uchar_t			*cl_sctpi_faddrp;
    133 	cl_sctp_handle_t	cl_sctpi_handle;
    134 } cl_sctp_info_t;
    135 
    136 #define	CL_SCTPI_V1	1	/* cl_sctpi_version number */
    137 
    138 /* Used to indicate if the local or peer address list has changed */
    139 #define	SCTP_CL_LADDR	1
    140 #define	SCTP_CL_PADDR	2
    141 
    142 extern int cl_sctp_cookie_paddr(sctp_chunk_hdr_t *, in6_addr_t *);
    143 extern int cl_sctp_walk_list(int (*callback)(cl_sctp_info_t *, void *), void *,
    144     boolean_t);
    145 
    146 /* End of private SunCluster interfaces */
    147 
    148 #endif /* _KERNEL */
    149 
    150 #ifdef __cplusplus
    151 }
    152 #endif
    153 
    154 #endif /* _INET_SCTP_ITF_H */
    155