+/*
+ * ppp.c - STREAMS multiplexing pseudo-device driver for PPP.
+ *
+ * Copyright (c) 1994 The Australian National University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation is hereby granted, provided that the above copyright
+ * notice appears in all copies. This software is provided without any
+ * warranty, express or implied. The Australian National University
+ * makes no representations about the suitability of this software for
+ * any purpose.
+ *
+ * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
+ * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
+ * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
+ * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
+ * OR MODIFICATIONS.
+ *
+ * $Id: ppp.c,v 1.5 1995/06/23 01:38:49 paulus Exp $
+ */
+
+/*
+ * This file is used under Solaris 2.
+ */
+
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/stropts.h>
#include <sys/errno.h>
#include <sys/cmn_err.h>
-#include <sys/modctl.h>
#include <sys/conf.h>
-#include <sys/ddi.h>
-#include <sys/sunddi.h>
#include <sys/dlpi.h>
#include <sys/ioccom.h>
+#include <sys/kmem.h>
+#include <sys/ddi.h>
+#ifdef sun
+#include <sys/modctl.h>
+#include <sys/kstat.h>
+#include <sys/sunddi.h>
+#endif
#include <net/ppp_defs.h>
#include <net/pppio.h>
#endif
#ifndef PPP_MAXMTU
-#define PPP_MAXMTU 65536
+#define PPP_MAXMTU 65535
#endif
/*
* Private information; one per upper stream.
*/
-struct upperstr {
+typedef struct upperstr {
minor_t mn; /* minor device number */
+ struct upperstr *nextmn; /* next minor device */
queue_t *q; /* read q associated with this upper stream */
int flags; /* flag bits, see below */
int state; /* current DLPI state */
int sap; /* service access point */
+ int req_sap; /* which SAP the DLPI client requested */
struct upperstr *ppa; /* control stream for our ppa */
struct upperstr *next; /* next stream for this ppa */
+ uint ioc_id; /* last ioctl ID for this stream */
/*
* There is exactly one control stream for each PPA.
* The following fields are only used for control streams.
int ppa_id;
queue_t *lowerq; /* write queue attached below this PPA */
struct upperstr *nextppa; /* next control stream */
-};
+ int mru;
+ int mtu;
+ struct pppstat stats; /* statistics */
+#ifdef sun
+ kstat_t *kstats; /* stats for netstat */
+#endif
+} upperstr_t;
/* Values for flags */
#define US_PRIV 1 /* stream was opened by superuser */
#define US_CONTROL 2 /* stream is a control stream */
-#define US_BLOCKED 4 /* flow ctrl has blocked lower stream */
+#define US_BLOCKED 4 /* flow ctrl has blocked lower write stream */
+#define US_LASTMOD 8 /* no PPP modules below us */
-static void *upper_states;
-static struct upperstr *ppas;
+static upperstr_t *minor_devs = NULL;
+static upperstr_t *ppas = NULL;
+#ifdef sun
static int ppp_identify __P((dev_info_t *));
static int ppp_attach __P((dev_info_t *, ddi_attach_cmd_t));
static int ppp_detach __P((dev_info_t *, ddi_detach_cmd_t));
static int ppp_devinfo __P((dev_info_t *, ddi_info_cmd_t, void *, void **));
+#endif
static int pppopen __P((queue_t *, dev_t *, int, int, cred_t *));
static int pppclose __P((queue_t *, int, cred_t *));
static int pppuwput __P((queue_t *, mblk_t *));
static int pppursrv __P((queue_t *));
static int pppuwsrv __P((queue_t *));
static int ppplrput __P((queue_t *, mblk_t *));
+static int ppplwput __P((queue_t *, mblk_t *));
static int ppplrsrv __P((queue_t *));
static int ppplwsrv __P((queue_t *));
-static void dlpi_request __P((queue_t *, mblk_t *, struct upperstr *));
+static void dlpi_request __P((queue_t *, mblk_t *, upperstr_t *));
static void dlpi_error __P((queue_t *, int, int, int));
static void dlpi_ok __P((queue_t *, int));
-static int send_data __P((mblk_t *, struct upperstr *));
+static int send_data __P((mblk_t *, upperstr_t *));
static void new_ppa __P((queue_t *, mblk_t *));
-static struct upperstr *find_dest __P((struct upperstr *, int));
+static void attach_ppa __P((queue_t *, mblk_t *));
+static void detach_ppa __P((queue_t *, mblk_t *));
+static void debug_dump __P((queue_t *, mblk_t *));
+static upperstr_t *find_dest __P((upperstr_t *, int));
+static int putctl2 __P((queue_t *, int, int, int));
+static int putctl4 __P((queue_t *, int, int, int));
static struct module_info ppp_info = {
0xb1a6, "ppp", 0, 512, 512, 128
};
static struct qinit ppplwint = {
- NULL, ppplwsrv, NULL, NULL, NULL, &ppp_info, NULL
+ ppplwput, ppplwsrv, NULL, NULL, NULL, &ppp_info, NULL
};
static struct streamtab pppinfo = {
&ppplrint, &ppplwint
};
+#ifdef sun
static dev_info_t *ppp_dip;
static struct cb_ops cb_ppp_ops = {
int
_init(void)
{
- int error;
-
- error = ddi_soft_state_init(&upper_states, sizeof(struct upperstr), 4);
- if (!error) {
- error = mod_install(&modlinkage);
- if (!error)
- return 0;
- ddi_soft_state_fini(&upper_states);
- }
- return error;
+ return mod_install(&modlinkage);
}
int
_fini(void)
{
- int error;
-
- error = mod_remove(&modlinkage);
- if (error)
- return error;
- ddi_soft_state_fini(&upper_states);
- return 0;
+ return mod_remove(&modlinkage);
}
int
}
return error;
}
+#endif /* sun */
+
+#ifndef sun
+# define qprocson(q)
+# define qprocsoff(q)
+# define canputnext(q) canput((q)->q_next)
+# define qwriter(q, mp, func, scope) (func)((q), (mp))
+#endif
static int
pppopen(q, devp, oflag, sflag, credp)
int oflag, sflag;
cred_t *credp;
{
- struct upperstr *up;
+ upperstr_t *up;
+ upperstr_t **prevp;
minor_t mn;
if (q->q_ptr)
return 0; /* device is already open */
if (sflag == CLONEOPEN) {
- for (mn = 0; ddi_get_soft_state(upper_states, mn) != NULL; ++mn)
- ;
+ mn = 0;
+ for (prevp = &minor_devs; (up = *prevp) != 0; prevp = &up->nextmn) {
+ if (up->mn != mn)
+ break;
+ ++mn;
+ }
} else {
mn = getminor(*devp);
+ for (prevp = &minor_devs; (up = *prevp) != 0; prevp = &up->nextmn) {
+ if (up->mn >= mn)
+ break;
+ }
+ if (up->mn == mn) {
+ /* this can't happen */
+ q->q_ptr = WR(q)->q_ptr = up;
+ return 0;
+ }
}
- cmn_err(CE_CONT, "pppopen: minor %d\n", mn);
/*
* Construct a new minor node.
*/
- if (ddi_soft_state_zalloc(upper_states, mn) != DDI_SUCCESS)
+ up = (upperstr_t *) kmem_zalloc(sizeof(upperstr_t), KM_SLEEP);
+ if (up == 0) {
+ cmn_err(CE_CONT, "pppopen: out of kernel memory\n");
return ENXIO;
- up = ddi_get_soft_state(upper_states, mn);
+ }
+ up->nextmn = *prevp;
+ *prevp = up;
+ up->mn = mn;
*devp = makedevice(getmajor(*devp), mn);
up->q = q;
- up->mn = mn;
- up->flags = 0;
if (drv_priv(credp) == 0)
up->flags |= US_PRIV;
up->state = DL_UNATTACHED;
up->sap = -1;
- up->ppa = 0;
- up->next = 0;
- up->lowerq = 0;
q->q_ptr = up;
WR(q)->q_ptr = up;
noenable(WR(q));
int flag;
cred_t *credp;
{
- struct upperstr *up, **upp;
- struct upperstr *as, *asnext;
- struct lowerstr *ls;
+ upperstr_t *up, **upp;
+ upperstr_t *as, *asnext;
+ upperstr_t **prevp;
qprocsoff(q);
- up = (struct upperstr *) q->q_ptr;
- cmn_err(CE_CONT, "pppclose: minor %d\n", up->mn);
+ up = (upperstr_t *) q->q_ptr;
+ if (up == 0)
+ return 0;
if (up->flags & US_CONTROL) {
/*
* This stream represents a PPA:
}
}
+#ifdef sun
+ if (up->kstats)
+ kstat_delete(up->kstats);
+#endif
+
q->q_ptr = NULL;
WR(q)->q_ptr = NULL;
- ddi_soft_state_free(upper_states, up->mn);
+
+ for (prevp = &minor_devs; *prevp != 0; prevp = &(*prevp)->nextmn) {
+ if (*prevp == up) {
+ *prevp = up->nextmn;
+ break;
+ }
+ }
+ kmem_free(up, sizeof(upperstr_t));
return 0;
}
queue_t *q;
mblk_t *mp;
{
- struct upperstr *us, *usnext;
+ upperstr_t *us, *usnext, *ppa;
struct iocblk *iop;
struct linkblk *lb;
queue_t *lq;
- int error;
+ int error, n;
mblk_t *mq;
- us = (struct upperstr *) q->q_ptr;
+ us = (upperstr_t *) q->q_ptr;
switch (mp->b_datap->db_type) {
case M_PCPROTO:
case M_PROTO:
break;
case M_DATA:
+ if ((us->flags & US_CONTROL) == 0
+ || msgdsize(mp) > us->mtu + PPP_HDRLEN) {
+#if DEBUG
+ cmn_err(CE_CONT, "pppuwput: junk data len=%d\n", msgdsize(mp));
+#endif
+ freemsg(mp);
+ break;
+ }
if (!send_data(mp, us))
putq(q, mp);
break;
case M_IOCTL:
iop = (struct iocblk *) mp->b_rptr;
- cmn_err(CE_CONT, "ppp%d ioctl %x count=%d\n", us->mn, iop->ioc_cmd,
- iop->ioc_count);
+ error = EINVAL;
switch (iop->ioc_cmd) {
case I_LINK:
if ((us->flags & US_CONTROL) == 0 || us->lowerq != 0)
- goto iocnak;
+ break;
lb = (struct linkblk *) mp->b_cont->b_rptr;
us->lowerq = lq = lb->l_qbot;
lq->q_ptr = us;
- WR(lq)->q_ptr = us;
+ RD(lq)->q_ptr = us;
+ noenable(RD(lq));
iop->ioc_count = 0;
- mp->b_datap->db_type = M_IOCACK;
- qreply(q, mp);
+ error = 0;
+ us->flags &= ~US_LASTMOD;
/* Unblock upper streams which now feed this lower stream. */
qenable(lq);
+ /* Send useful information down to the modules which
+ are now linked below us. */
+ putctl2(lq, M_CTL, PPPCTL_UNIT, us->ppa_id);
+ putctl4(lq, M_CTL, PPPCTL_MRU, us->mru);
+ putctl4(lq, M_CTL, PPPCTL_MTU, us->mtu);
break;
case I_UNLINK:
lb = (struct linkblk *) mp->b_cont->b_rptr;
+#if DEBUG
if (us->lowerq != lb->l_qbot)
cmn_err(CE_CONT, "ppp unlink: lowerq=%x qbot=%x\n",
us->lowerq, lb->l_qbot);
+#endif
us->lowerq = 0;
iop->ioc_count = 0;
- mp->b_datap->db_type = M_IOCACK;
- qreply(q, mp);
+ error = 0;
/* Unblock streams which now feed back up the control stream. */
qenable(us->q);
break;
case PPPIO_NEWPPA:
if (us->flags & US_CONTROL)
- goto iocnak;
+ break;
if ((us->flags & US_PRIV) == 0) {
- iop->ioc_error = EPERM;
- goto iocnak;
+ error = EPERM;
+ break;
}
/* Arrange to return an int */
if ((mq = mp->b_cont) == 0
|| mq->b_datap->db_lim - mq->b_rptr < sizeof(int)) {
mq = allocb(sizeof(int), BPRI_HI);
if (mq == 0) {
- iop->ioc_error = ENOSR;
- goto iocnak;
+ error = ENOSR;
+ break;
}
if (mp->b_cont != 0)
freemsg(mp->b_cont);
iop->ioc_count = sizeof(int);
mq->b_wptr = mq->b_rptr + sizeof(int);
qwriter(q, mp, new_ppa, PERIM_OUTER);
+ error = -1;
+ break;
+
+ case PPPIO_ATTACH:
+ /* like dlpi_attach, for programs which can't write to
+ the stream (like pppstats) */
+ if (iop->ioc_count != sizeof(int) || us->ppa != 0)
+ break;
+ n = *(int *)mp->b_cont->b_rptr;
+ for (ppa = ppas; ppa != 0; ppa = ppa->nextppa)
+ if (ppa->ppa_id == n)
+ break;
+ if (ppa == 0)
+ break;
+ us->ppa = ppa;
+ iop->ioc_count = 0;
+ qwriter(q, mp, attach_ppa, PERIM_OUTER);
+ error = -1;
+ break;
+
+ case PPPIO_MRU:
+ if (iop->ioc_count != sizeof(int) || (us->flags & US_CONTROL) == 0)
+ break;
+ n = *(int *)mp->b_cont->b_rptr;
+ if (n <= 0 || n > PPP_MAXMTU)
+ break;
+ if (n < PPP_MRU)
+ n = PPP_MRU;
+ us->mru = n;
+ if (us->lowerq)
+ putctl4(us->lowerq, M_CTL, PPPCTL_MRU, n);
+ error = 0;
+ iop->ioc_count = 0;
+ break;
+
+ case PPPIO_MTU:
+ if (iop->ioc_count != sizeof(int) || (us->flags & US_CONTROL) == 0)
+ break;
+ n = *(int *)mp->b_cont->b_rptr;
+ if (n <= 0 || n > PPP_MAXMTU)
+ break;
+ if (n < PPP_MRU)
+ n = PPP_MRU;
+ us->mtu = n;
+ if (us->lowerq)
+ putctl4(us->lowerq, M_CTL, PPPCTL_MTU, n);
+ error = 0;
+ iop->ioc_count = 0;
+ break;
+
+ case PPPIO_LASTMOD:
+ us->flags |= US_LASTMOD;
+ error = 0;
+ break;
+
+ case PPPIO_DEBUG:
+ if (iop->ioc_count != sizeof(int))
+ break;
+ n = *(int *)mp->b_cont->b_rptr;
+ if (n == PPPDBG_DUMP + PPPDBG_DRIVER) {
+ qwriter(q, NULL, debug_dump, PERIM_OUTER);
+ iop->ioc_count = 0;
+ error = 0;
+ } else {
+ if (us->ppa == 0 || us->ppa->lowerq == 0)
+ break;
+ putnext(us->ppa->lowerq, mp);
+ error = -1;
+ }
break;
default:
if (us->ppa == 0 || us->ppa->lowerq == 0)
- goto iocnak;
+ break;
+ us->ioc_id = iop->ioc_id;
+ error = -1;
switch (iop->ioc_cmd) {
case PPPIO_GETSTAT:
case PPPIO_GETCSTAT:
+ if (us->flags & US_LASTMOD) {
+ error = EINVAL;
+ break;
+ }
+ putnext(us->ppa->lowerq, mp);
break;
default:
- if ((us->flags & US_PRIV) == 0) {
- iop->ioc_error = EPERM;
- goto iocnak;
+ if (us->flags & US_PRIV)
+ putnext(us->ppa->lowerq, mp);
+ else {
+#if DEBUG
+ cmn_err(CE_CONT, "ppp ioctl %x rejected\n", iop->ioc_cmd);
+#endif
+ error = EPERM;
}
+ break;
}
- putnext(us->ppa->lowerq, mp);
break;
+ }
- iocnak:
+ if (error > 0) {
+ iop->ioc_error = error;
mp->b_datap->db_type = M_IOCNAK;
qreply(q, mp);
- break;
+ } else if (error == 0) {
+ mp->b_datap->db_type = M_IOCACK;
+ qreply(q, mp);
}
break;
dlpi_request(q, mp, us)
queue_t *q;
mblk_t *mp;
- struct upperstr *us;
+ upperstr_t *us;
{
union DL_primitives *d = (union DL_primitives *) mp->b_rptr;
int size = mp->b_wptr - mp->b_rptr;
mblk_t *reply, *np;
- struct upperstr *t, *ppa;
- int sap;
+ upperstr_t *ppa, *os;
+ int sap, *ip, len;
dl_info_ack_t *info;
dl_bind_ack_t *ackp;
- dl_phys_addr_ack_t *adrp;
- cmn_err(CE_CONT, "ppp%d dlpi prim %x, state=%x\n", us->mn,
- d->dl_primitive, us->state);
switch (d->dl_primitive) {
case DL_INFO_REQ:
if (size < sizeof(dl_info_req_t))
info->dl_max_sdu = PPP_MAXMTU;
info->dl_min_sdu = 1;
info->dl_addr_length = sizeof(ulong);
+#ifdef DL_OTHER
info->dl_mac_type = DL_OTHER;
+#else
+ info->dl_mac_type = DL_HDLC; /* a lie */
+#endif
info->dl_current_state = us->state;
- info->dl_sap_length = sizeof(ulong);
info->dl_service_mode = DL_CLDLS;
info->dl_provider_style = DL_STYLE2;
+#if DL_CURRENT_VERSION >= 2
+ info->dl_sap_length = sizeof(ulong);
info->dl_version = DL_CURRENT_VERSION;
+#endif
qreply(q, reply);
break;
break;
}
us->ppa = ppa;
- us->state = DL_UNBOUND;
- for (t = ppa; t->next != 0; t = t->next)
- ;
- t->next = us;
- us->next = 0;
- dlpi_ok(q, DL_ATTACH_REQ);
+ qwriter(q, mp, attach_ppa, PERIM_OUTER);
break;
case DL_DETACH_REQ:
dlpi_error(q, DL_DETACH_REQ, DL_OUTSTATE, 0);
break;
}
- for (t = us->ppa; t->next != 0; t = t->next)
- if (t->next == us) {
- t->next = us->next;
- break;
- }
- us->next = 0;
- us->ppa = 0;
- us->state = DL_UNATTACHED;
- dlpi_ok(q, DL_DETACH_REQ);
+ qwriter(q, mp, detach_ppa, PERIM_OUTER);
break;
case DL_BIND_REQ:
if (size < sizeof(dl_bind_req_t))
goto badprim;
- if (us->state != DL_UNBOUND) {
+ if (us->state != DL_UNBOUND || us->ppa == 0) {
dlpi_error(q, DL_BIND_REQ, DL_OUTSTATE, 0);
break;
}
dlpi_error(q, DL_BIND_REQ, DL_UNSUPPORTED, 0);
break;
}
- /* saps must be valid PPP network protocol numbers */
+
+ /* saps must be valid PPP network protocol numbers,
+ except that we accept ETHERTYPE_IP in place of PPP_IP. */
sap = d->bind_req.dl_sap;
+ us->req_sap = sap;
+#if DEBUG
cmn_err(CE_CONT, "ppp bind %x\n", sap);
+#endif
if (sap == ETHERTYPE_IP)
sap = PPP_IP;
- if (sap < 0x21 || sap > 0x3fff
- || (sap & 1) == 0 || (sap & 0x100) != 0) {
+ if (sap < 0x21 || sap > 0x3fff || (sap & 0x101) != 1) {
dlpi_error(q, DL_BIND_REQ, DL_BADADDR, 0);
break;
}
+
+ /* check that no other stream is bound to this sap already. */
+ for (os = us->ppa; os != 0; os = os->next)
+ if (os->sap == sap)
+ break;
+ if (os != 0) {
+ dlpi_error(q, DL_BIND_REQ, DL_NOADDR, 0);
+ break;
+ }
+
us->sap = sap;
us->state = DL_IDLE;
+
if ((reply = allocb(sizeof(dl_bind_ack_t) + sizeof(ulong),
BPRI_HI)) == 0)
break; /* should do bufcall */
dlpi_error(q, DL_UNITDATA_REQ, DL_OUTSTATE, 0);
break;
}
+ if (us->ppa == 0) {
+ cmn_err(CE_CONT, "ppp: in state dl_idle but ppa == 0?\n");
+ break;
+ }
+ len = mp->b_cont == 0? 0: msgdsize(mp->b_cont);
+ if (len > us->ppa->mtu) {
+#if DEBUG
+ cmn_err(CE_CONT, "dlpi data too large (%d > %d)\n", len, us->mtu);
+#endif
+ break;
+ }
/* this assumes PPP_HDRLEN <= sizeof(dl_unitdata_req_t) */
if (mp->b_datap->db_ref > 1) {
np = allocb(PPP_HDRLEN, BPRI_HI);
mp->b_cont = 0;
freeb(mp);
mp = np;
- }
- /* XXX should use dl_dest_addr_offset/length here */
+ } else
+ mp->b_datap->db_type = M_DATA;
+ /* XXX should use dl_dest_addr_offset/length here,
+ but we would have to translate ETHERTYPE_IP -> PPP_IP */
mp->b_wptr = mp->b_rptr + PPP_HDRLEN;
mp->b_rptr[0] = PPP_ALLSTATIONS;
mp->b_rptr[1] = PPP_UI;
putq(q, mp);
return;
+#if DL_CURRENT_VERSION >= 2
case DL_SUBS_BIND_REQ:
case DL_SUBS_UNBIND_REQ:
case DL_ENABMULTI_REQ:
case DL_DISABMULTI_REQ:
case DL_PROMISCON_REQ:
case DL_PROMISCOFF_REQ:
- case DL_PHYS_ADDR_REQ:
case DL_SET_PHYS_ADDR_REQ:
case DL_XID_REQ:
case DL_TEST_REQ:
- case DL_CONNECT_REQ:
- case DL_TOKEN_REQ:
case DL_REPLY_UPDATE_REQ:
- case DL_GET_STATISTICS_REQ:
case DL_REPLY_REQ:
case DL_DATA_ACK_REQ:
+#endif
+ case DL_CONNECT_REQ:
+ case DL_TOKEN_REQ:
dlpi_error(q, d->dl_primitive, DL_NOTSUPPORTED, 0);
break;
dlpi_error(q, d->dl_primitive, DL_BADQOSTYPE, 0);
break;
+#if DL_CURRENT_VERSION >= 2
case DL_TEST_RES:
case DL_XID_RES:
break;
+#endif
default:
+ cmn_err(CE_CONT, "ppp: unknown dlpi prim 0x%x\n", d->dl_primitive);
+ /* fall through */
badprim:
dlpi_error(q, d->dl_primitive, DL_BADPRIM, 0);
break;
static int
send_data(mp, us)
mblk_t *mp;
- struct upperstr *us;
+ upperstr_t *us;
{
queue_t *q;
- struct upperstr *ppa;
+ upperstr_t *ppa;
if (us->flags & US_BLOCKED)
return 0;
}
if ((q = ppa->lowerq) == 0) {
/* try to send it up the control stream */
- q = ppa->q;
- }
- if (canputnext(q)) {
- putnext(q, mp);
- return 1;
+ if (canputnext(ppa->q)) {
+ putnext(ppa->q, mp);
+ return 1;
+ }
+ } else {
+ if (canputnext(ppa->lowerq)) {
+ /*
+ * The lower write queue's put procedure just updates counters
+ * and does a putnext. We call it in order to enter the lower
+ * queues' perimeter so that the counter updates are serialized.
+ */
+ put(ppa->lowerq, mp);
+ return 1;
+ }
}
us->flags |= US_BLOCKED;
return 0;
}
+/*
+ * Allocate a new PPA id and link this stream into the list of PPAs.
+ * This procedure is called with an exclusive lock on all queues in
+ * this driver.
+ */
static void
new_ppa(q, mp)
queue_t *q;
mblk_t *mp;
{
- struct upperstr *us, **usp;
+ upperstr_t *us, **usp;
int ppa_id;
- /*
- * Allocate a new PPA id and link this stream into
- * the list of PPAs.
- */
usp = &ppas;
ppa_id = 0;
while ((us = *usp) != 0 && ppa_id == us->ppa_id) {
++ppa_id;
usp = &us->nextppa;
}
- us = (struct upperstr *) q->q_ptr;
+ us = (upperstr_t *) q->q_ptr;
us->ppa_id = ppa_id;
us->ppa = us;
us->next = 0;
*usp = us;
us->flags |= US_CONTROL;
+ us->mtu = PPP_MRU;
+ us->mru = PPP_MRU;
+
+#ifdef sun
+ if (us->kstats == 0) {
+ char unit[32];
+
+ sprintf(unit, "ppp%d", us->ppa->ppa_id);
+ us->kstats = kstat_create("ppp", us->ppa->ppa_id, unit,
+ "net", KSTAT_TYPE_NAMED, 4, 0);
+ if (us->kstats != 0) {
+ kstat_named_t *kn = KSTAT_NAMED_PTR(us->kstats);
+
+ strcpy(kn[0].name, "ipackets");
+ kn[0].data_type = KSTAT_DATA_ULONG;
+ strcpy(kn[1].name, "ierrors");
+ kn[1].data_type = KSTAT_DATA_ULONG;
+ strcpy(kn[2].name, "opackets");
+ kn[2].data_type = KSTAT_DATA_ULONG;
+ strcpy(kn[3].name, "oerrors");
+ kn[3].data_type = KSTAT_DATA_ULONG;
+ kstat_install(us->kstats);
+ }
+ }
+#endif
+
*(int *)mp->b_cont->b_rptr = ppa_id;
mp->b_datap->db_type = M_IOCACK;
qreply(q, mp);
}
+static void
+attach_ppa(q, mp)
+ queue_t *q;
+ mblk_t *mp;
+{
+ upperstr_t *us, *t;
+
+ us = (upperstr_t *) q->q_ptr;
+ us->state = DL_UNBOUND;
+ for (t = us->ppa; t->next != 0; t = t->next)
+ ;
+ t->next = us;
+ us->next = 0;
+ if (mp->b_datap->db_type == M_IOCTL) {
+ mp->b_datap->db_type = M_IOCACK;
+ qreply(q, mp);
+ } else {
+ dlpi_ok(q, DL_ATTACH_REQ);
+ }
+}
+
+static void
+detach_ppa(q, mp)
+ queue_t *q;
+ mblk_t *mp;
+{
+ upperstr_t *us, *t;
+
+ us = (upperstr_t *) q->q_ptr;
+ for (t = us->ppa; t->next != 0; t = t->next)
+ if (t->next == us) {
+ t->next = us->next;
+ break;
+ }
+ us->next = 0;
+ us->ppa = 0;
+ us->state = DL_UNATTACHED;
+ dlpi_ok(q, DL_DETACH_REQ);
+}
+
static int
pppuwsrv(q)
queue_t *q;
{
- struct upperstr *us;
+ upperstr_t *us;
struct lowerstr *ls;
queue_t *lwq;
mblk_t *mp;
- us = (struct upperstr *) q->q_ptr;
+ us = (upperstr_t *) q->q_ptr;
+ us->flags &= ~US_BLOCKED;
while ((mp = getq(q)) != 0) {
if (!send_data(mp, us)) {
putbq(q, mp);
return 0;
}
+static int
+ppplwput(q, mp)
+ queue_t *q;
+ mblk_t *mp;
+{
+ upperstr_t *ppa;
+
+ ppa = q->q_ptr;
+ if (ppa != 0) { /* why wouldn't it? */
+ ppa->stats.ppp_opackets++;
+ ppa->stats.ppp_obytes += msgdsize(mp);
+#ifdef sun
+ if (ppa->kstats != 0)
+ KSTAT_NAMED_PTR(ppa->kstats)[2].value.ul++;
+#endif
+ }
+ putnext(q, mp);
+ return 0;
+}
+
static int
ppplwsrv(q)
queue_t *q;
{
- struct upperstr *us;
+ upperstr_t *us;
/*
* Flow control has back-enabled this stream:
* enable the write service procedures of all upper
* streams feeding this lower stream.
*/
- for (us = (struct upperstr *) q->q_ptr; us != NULL; us = us->next)
+ for (us = (upperstr_t *) q->q_ptr; us != NULL; us = us->next)
if (us->flags & US_BLOCKED)
qenable(WR(us->q));
return 0;
pppursrv(q)
queue_t *q;
{
- struct upperstr *us, *as;
+ upperstr_t *us, *as;
mblk_t *mp, *hdr;
dl_unitdata_ind_t *ud;
int proto;
- /*
- * If this is a control stream and we don't have a lower queue attached,
- * run the write service routines of other streams attached to this PPA.
- */
- us = (struct upperstr *) q->q_ptr;
+ us = (upperstr_t *) q->q_ptr;
if (us->flags & US_CONTROL) {
/*
* A control stream.
/*
* A network protocol stream. Put a DLPI header on each
* packet and send it on.
+ * (Actually, it seems that the IP module will happily
+ * accept M_DATA messages without the DL_UNITDATA_IND header.)
*/
while ((mp = getq(q)) != 0) {
if (!canputnext(q)) {
freemsg(mp);
continue;
}
+ hdr->b_datap->db_type = M_PROTO;
ud = (dl_unitdata_ind_t *) hdr->b_wptr;
hdr->b_wptr += sizeof(dl_unitdata_ind_t) + 2 * sizeof(ulong);
hdr->b_cont = mp;
ud->dl_dest_addr_offset = sizeof(dl_unitdata_ind_t);
ud->dl_src_addr_length = sizeof(ulong);
ud->dl_src_addr_offset = ud->dl_dest_addr_offset + sizeof(ulong);
+#if DL_CURRENT_VERSION >= 2
ud->dl_group_address = 0;
- ((ulong *)(ud + 1))[0] = proto; /* dest SAP */
- ((ulong *)(ud + 1))[1] = proto; /* src SAP */
- putnext(q, mp);
+#endif
+ /* Send the DLPI client the data with the SAP they requested,
+ (e.g. ETHERTYPE_IP) rather than the PPP protocol number
+ (e.g. PPP_IP) */
+ ((ulong *)(ud + 1))[0] = us->req_sap; /* dest SAP */
+ ((ulong *)(ud + 1))[1] = us->req_sap; /* src SAP */
+ putnext(q, hdr);
}
}
+
+ /*
+ * If this stream is attached to a PPA with a lower queue pair,
+ * enable the read queue's service routine if it has data queued.
+ * XXX there is a possibility that packets could get out of order
+ * if ppplrput now runs before ppplrsrv.
+ */
+ if (us->ppa != 0 && us->ppa->lowerq != 0)
+ qenable(RD(us->ppa->lowerq));
+
return 0;
}
-static struct upperstr *
+static upperstr_t *
find_dest(ppa, proto)
- struct upperstr *ppa;
+ upperstr_t *ppa;
int proto;
{
- struct upperstr *us;
+ upperstr_t *us;
for (us = ppa->next; us != 0; us = us->next)
if (proto == us->sap)
- return us;
- return 0;
+ break;
+ return us;
}
static int
queue_t *q;
mblk_t *mp;
{
- struct upperstr *ppa, *us;
+ upperstr_t *ppa, *us;
queue_t *uq;
- int proto;
+ int proto, len;
+ mblk_t *np;
+ struct iocblk *iop;
- ppa = (struct upperstr *) q->q_ptr;
+ ppa = (upperstr_t *) q->q_ptr;
+ if (ppa == 0) {
+#if DEBUG
+ cmn_err(CE_CONT, "ppplrput: q = %x, ppa = 0??\n", q);
+#endif
+ freemsg(mp);
+ return 0;
+ }
switch (mp->b_datap->db_type) {
case M_FLUSH:
if (*mp->b_rptr & FLUSHW) {
freemsg(mp);
break;
- default:
- if (mp->b_datap->db_type == M_DATA
- && (proto = PPP_PROTOCOL(mp->b_rptr)) < 0x8000
- && (us = find_dest(ppa, proto)) != 0) {
- /*
- * A data packet for some network protocol.
- * Queue it on the upper stream for that protocol.
- */
- if (canput(us->q))
- putq(us->q, mp);
- else
- putq(q, mp);
+ case M_CTL:
+ switch (*mp->b_rptr) {
+ case PPPCTL_IERROR:
+#ifdef sun
+ if (ppa->kstats != 0) {
+ KSTAT_NAMED_PTR(ppa->kstats)[1].value.ul++;
+ }
+#endif
+ ppa->stats.ppp_ierrors++;
break;
- } else {
- /*
- * A control frame, a frame for an unknown protocol,
- * or some other message type.
- * Send it up to pppd via the control stream.
- */
- if (mp->b_datap->db_type >= QPCTL || canputnext(ppa->q))
- putnext(ppa->q, mp);
- else
- putq(q, mp);
+ case PPPCTL_OERROR:
+#ifdef sun
+ if (ppa->kstats != 0) {
+ KSTAT_NAMED_PTR(ppa->kstats)[3].value.ul++;
+ }
+#endif
+ ppa->stats.ppp_oerrors++;
+ break;
+ }
+ freemsg(mp);
+ break;
+
+ case M_IOCACK:
+ case M_IOCNAK:
+ /*
+ * Attempt to match up the response with the stream
+ * that the request came from.
+ */
+ iop = (struct iocblk *) mp->b_rptr;
+ for (us = ppa; us != 0; us = us->next)
+ if (us->ioc_id == iop->ioc_id)
+ break;
+ if (us == 0)
+ freemsg(mp);
+ else
+ putnext(us->q, mp);
+ break;
+
+ default:
+ if (mp->b_datap->db_type == M_DATA) {
+ len = msgdsize(mp);
+ if (mp->b_wptr - mp->b_rptr < PPP_HDRLEN) {
+ np = msgpullup(mp, PPP_HDRLEN);
+ freemsg(mp);
+ if (np == 0) {
+#if DEBUG
+ cmn_err(CE_CONT, "ppp_lrput: msgpullup failed (len=%d)\n",
+ len);
+#endif
+ break;
+ }
+ mp = np;
+ }
+ ppa->stats.ppp_ipackets++;
+ ppa->stats.ppp_ibytes += len;
+#ifdef sun
+ if (ppa->kstats != 0) {
+ KSTAT_NAMED_PTR(ppa->kstats)[0].value.ul++;
+ }
+#endif
+ proto = PPP_PROTOCOL(mp->b_rptr);
+ if (proto < 0x8000 && (us = find_dest(ppa, proto)) != 0) {
+ /*
+ * A data packet for some network protocol.
+ * Queue it on the upper stream for that protocol.
+ */
+ if (canput(us->q))
+ putq(us->q, mp);
+ else
+ putq(q, mp);
+ break;
+ }
}
+ /*
+ * A control frame, a frame for an unknown protocol,
+ * or some other message type.
+ * Send it up to pppd via the control stream.
+ */
+ if (queclass(mp) == QPCTL || canputnext(ppa->q))
+ putnext(ppa->q, mp);
+ else
+ putq(q, mp);
break;
}
queue_t *q;
{
mblk_t *mp;
- struct upperstr *ppa, *us;
+ upperstr_t *ppa, *us;
int proto;
/*
* Packets only get queued here for flow control reasons.
*/
- ppa = (struct upperstr *) q->q_ptr;
+ ppa = (upperstr_t *) q->q_ptr;
while ((mp = getq(q)) != 0) {
if (mp->b_datap->db_type == M_DATA
&& (proto = PPP_PROTOCOL(mp->b_rptr)) < 0x8000
}
return 0;
}
+
+static int
+putctl2(q, type, code, val)
+ queue_t *q;
+ int type, code, val;
+{
+ mblk_t *mp;
+
+ mp = allocb(2, BPRI_HI);
+ if (mp == 0)
+ return 0;
+ mp->b_datap->db_type = type;
+ mp->b_wptr[0] = code;
+ mp->b_wptr[1] = val;
+ mp->b_wptr += 2;
+ putnext(q, mp);
+ return 1;
+}
+
+static int
+putctl4(q, type, code, val)
+ queue_t *q;
+ int type, code, val;
+{
+ mblk_t *mp;
+
+ mp = allocb(4, BPRI_HI);
+ if (mp == 0)
+ return 0;
+ mp->b_datap->db_type = type;
+ mp->b_wptr[0] = code;
+ ((short *)mp->b_wptr)[1] = val;
+ mp->b_wptr += 4;
+ putnext(q, mp);
+ return 1;
+}
+
+static void
+debug_dump(q, mp)
+ queue_t *q; /* not used */
+ mblk_t *mp; /* not used either */
+{
+ upperstr_t *us;
+ queue_t *uq, *lq;
+
+ cmn_err(CE_CONT, "ppp upper streams:\n");
+ for (us = minor_devs; us != 0; us = us->nextmn) {
+ uq = us->q;
+ cmn_err(CE_CONT, " %d: q=%x rlev=%d wlev=%d flags=0x%b",
+ us->mn, uq, (uq? qsize(uq): 0), (uq? qsize(WR(uq)): 0),
+ us->flags, "\020\1priv\2control\3blocked\4last");
+ cmn_err(CE_CONT, " state=%x sap=%x req_sap=%x", us->state, us->sap,
+ us->req_sap);
+ if (us->ppa == 0)
+ cmn_err(CE_CONT, " ppa=?\n");
+ else
+ cmn_err(CE_CONT, " ppa=%d\n", us->ppa->ppa_id);
+ if (us->flags & US_CONTROL) {
+ lq = us->lowerq;
+ cmn_err(CE_CONT, " control for %d lq=%x rlev=%d wlev=%d",
+ us->ppa_id, lq, (lq? qsize(RD(lq)): 0),
+ (lq? qsize(lq): 0));
+ cmn_err(CE_CONT, " mru=%d mtu=%d\n", us->mru, us->mtu);
+ }
+ }
+}
projects / ppp.git / blobdiff