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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
/*
* Contains the following utility functions:
* tli_send:
* tli_recv:
* get_ok_ack:
*
* Returns:
* See individual functions.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/user.h>
#include <sys/vnode.h>
#include <sys/errno.h>
#include <sys/stream.h>
#include <sys/ioctl.h>
#include <sys/stropts.h>
#include <sys/strsubr.h>
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <sys/tiuser.h>
#include <sys/t_kuser.h>
#include <sys/strsun.h>
#include <inet/common.h>
#include <inet/mi.h>
#include <netinet/ip6.h>
#include <inet/ip.h>
extern int getiocseqno(void);
int
tli_send(TIUSER *tiptr, mblk_t *bp, int fmode)
{
vnode_t *vp;
int error;
vp = tiptr->fp->f_vnode;
/*
* Send data honoring flow control and errors
*/
error = kstrputmsg(vp, bp, NULL, 0, 0, MSG_BAND | MSG_HOLDSIG, fmode);
return (error);
}
int
tli_recv(TIUSER *tiptr, mblk_t **bp, int fmode)
{
vnode_t *vp;
int error;
uchar_t pri;
int pflag;
rval_t rval;
clock_t timout;
vp = tiptr->fp->f_vnode;
if (fmode & (FNDELAY|FNONBLOCK))
timout = 0;
else
timout = -1;
pflag = MSG_ANY;
pri = 0;
*bp = NULL;
error = kstrgetmsg(vp, bp, NULL, &pri, &pflag, timout, &rval);
if (error == ETIME)
error = EAGAIN;
return (error);
}
int
get_ok_ack(TIUSER *tiptr, int type, int fmode)
{
int msgsz;
union T_primitives *pptr;
mblk_t *bp;
int error;
error = 0;
/*
* wait for ack
*/
bp = NULL;
if ((error = tli_recv(tiptr, &bp, fmode)) != 0)
return (error);
if ((msgsz = (int)MBLKL(bp)) < sizeof (int)) {
freemsg(bp);
return (EPROTO);
}
pptr = (void *)bp->b_rptr;
switch (pptr->type) {
case T_OK_ACK:
if (msgsz < TOKACKSZ || pptr->ok_ack.CORRECT_prim != type)
error = EPROTO;
break;
case T_ERROR_ACK:
if (msgsz < TERRORACKSZ) {
error = EPROTO;
break;
}
if (pptr->error_ack.TLI_error == TSYSERR)
error = pptr->error_ack.UNIX_error;
else
error = t_tlitosyserr(pptr->error_ack.TLI_error);
break;
default:
error = EPROTO;
break;
}
freemsg(bp);
return (error);
}
/*
* Translate a TLI error into a system error as best we can.
*/
static const int tli_errs[] = {
0, /* no error */
EADDRNOTAVAIL, /* TBADADDR */
ENOPROTOOPT, /* TBADOPT */
EACCES, /* TACCES */
EBADF, /* TBADF */
EADDRNOTAVAIL, /* TNOADDR */
EPROTO, /* TOUTSTATE */
EPROTO, /* TBADSEQ */
0, /* TSYSERR - will never get */
EPROTO, /* TLOOK - should never be sent by transport */
EMSGSIZE, /* TBADDATA */
EMSGSIZE, /* TBUFOVFLW */
EPROTO, /* TFLOW */
EWOULDBLOCK, /* TNODATA */
EPROTO, /* TNODIS */
EPROTO, /* TNOUDERR */
EINVAL, /* TBADFLAG */
EPROTO, /* TNOREL */
EOPNOTSUPP, /* TNOTSUPPORT */
EPROTO, /* TSTATECHNG */
};
int
t_tlitosyserr(int terr)
{
if (terr < 0 || (terr >= (sizeof (tli_errs) / sizeof (tli_errs[0]))))
return (EPROTO);
else
return (tli_errs[terr]);
}
/*
* Notify transport that we are having trouble with this connection.
* If transport is TCP/IP, IP should delete the IRE and start over.
*/
void
t_kadvise(TIUSER *tiptr, uchar_t *addr, int addr_len)
{
file_t *fp;
vnode_t *vp;
struct iocblk *iocp;
ipid_t *ipid;
mblk_t *mp;
fp = tiptr->fp;
vp = fp->f_vnode;
mp = mkiocb(IP_IOCTL);
if (!mp)
return;
iocp = (void *)mp->b_rptr;
iocp->ioc_count = sizeof (ipid_t) + addr_len;
mp->b_cont = allocb(iocp->ioc_count, BPRI_HI);
if (!mp->b_cont) {
freeb(mp);
return;
}
ipid = (void *)mp->b_cont->b_rptr;
mp->b_cont->b_wptr += iocp->ioc_count;
bzero(ipid, sizeof (*ipid));
ipid->ipid_cmd = IP_IOC_IRE_DELETE_NO_REPLY;
ipid->ipid_ire_type = 0;
ipid->ipid_addr_offset = sizeof (ipid_t);
ipid->ipid_addr_length = addr_len;
bcopy(addr, &ipid[1], addr_len);
/* Ignore flow control, signals and errors */
(void) kstrputmsg(vp, mp, NULL, 0, 0,
MSG_BAND | MSG_IGNFLOW | MSG_HOLDSIG | MSG_IGNERROR, 0);
}
#ifdef KTLIDEBUG
int ktlilog = 0;
/*
* Kernel level debugging aid. The global variable "ktlilog" is a bit
* mask which allows various types of debugging messages to be printed
* out.
*
* ktlilog & 1 will cause actual failures to be printed.
* ktlilog & 2 will cause informational messages to be
* printed.
*/
int
ktli_log(int level, char *str, int a1)
{
if (level & ktlilog)
printf(str, a1);
}
#endif
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