define ULTRIX so we know where we are

[ppp.git] / modules / ppp.c

diff --git a/modules/ppp.c b/modules/ppp.c
index 0000cb147ac319d7500dd48da87543742ceafd7e..7a181aaeaf469c18307c975f9a2667fe3cf8019c 100644 (file)
--- a/modules/ppp.c
+++ b/modules/ppp.c
@@ -24,11 +24,11 @@
  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  * OR MODIFICATIONS.
  *
- * $Id: ppp.c,v 1.3 1996/01/01 22:48:39 paulus Exp $
+ * $Id: ppp.c,v 1.8 1996/09/14 05:18:45 paulus Exp $
  */
 
 /*
- * This file is used under Solaris 2, SVR4, and SunOS 4.
+ * This file is used under Solaris 2, SVR4, SunOS 4, and Digital UNIX.
  */
 
 #include <sys/types.h>
@@ -37,7 +37,13 @@
 #include <sys/stream.h>
 #include <sys/stropts.h>
 #include <sys/errno.h>
+#ifdef __osf__
+#include <sys/ioctl.h>
+#include <sys/cmn_err.h>
+#define queclass(mp)   ((mp)->b_band & QPCTL)
+#else
 #include <sys/ioccom.h>
+#endif
 #include <sys/time.h>
 #ifdef SVR4
 #include <sys/cmn_err.h>
@@ -153,9 +159,11 @@ 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 int pass_packet __P((upperstr_t *ppa, mblk_t *mp, int outbound));
 
+#define PPP_ID 0xb1a6
 static struct module_info ppp_info = {
-    0xb1a6, "ppp", 0, 512, 512, 128
+    PPP_ID, "ppp", 0, 512, 512, 128
 };
 
 static struct qinit pppurint = {
@@ -387,7 +395,7 @@ pppclose(q, flag)
            break;
        }
     }
-    kmem_free(up, sizeof(upperstr_t));
+    FREE(up, sizeof(upperstr_t));
     --ppp_count;
 
     return 0;
@@ -415,6 +423,7 @@ pppuwput(q, mp)
     int error, n, sap;
     mblk_t *mq;
     struct ppp_idle *pip;
+    int len;
 
     us = (upperstr_t *) q->q_ptr;
     switch (mp->b_datap->db_type) {
@@ -439,8 +448,10 @@ pppuwput(q, mp)
            break;
        }
 #ifdef NO_DLPI
-       if ((us->flags & US_CONTROL) == 0)
-           us->ppa->last_sent = time;
+       if (!pass_packet(us->ppa, mp, 1)) {
+           freemsg(mp);
+           break;
+       }
 #endif
        if (!send_data(mp, us))
            putq(q, mp);
@@ -620,8 +631,11 @@ pppuwput(q, mp)
            for (nps = us->next; nps != 0; nps = nps->next)
                if (nps->sap == sap)
                    break;
-           if (nps == 0)
+           if (nps == 0) {
+               if (us->flags & US_DBGLOG)
+                   DPRINT2("ppp/%d: no stream for sap %x\n", us->mn, sap);
                break;
+           }
            nps->npmode = (enum NPmode) ((int *)mp->b_cont->b_rptr)[1];
            if (nps->npmode == NPMODE_DROP || nps->npmode == NPMODE_ERROR)
                flushq(WR(nps->q), FLUSHDATA);
@@ -654,7 +668,6 @@ pppuwput(q, mp)
 
 #ifdef LACHTCP
        case SIOCSIFNAME:
-           printf("SIOCSIFNAME\n");
            /* Sent from IP down to us.  Attach the ifstats structure.  */
            if (iop->ioc_count != sizeof(struct ifreq) || us->ppa == 0)
                break;
@@ -702,7 +715,6 @@ pppuwput(q, mp)
            break;
 
        case SIOCGIFFLAGS:
-           printf("SIOCGIFFLAGS\n");
            if (!(us->flags & US_CONTROL)) {
                if (us->ppa)
                    us = us->ppa;
@@ -714,7 +726,6 @@ pppuwput(q, mp)
            break;
 
        case SIOCSIFFLAGS:
-           printf("SIOCSIFFLAGS\n");
            if (!(us->flags & US_CONTROL)) {
                if (us->ppa)
                    us = us->ppa;
@@ -726,7 +737,6 @@ pppuwput(q, mp)
            break;
 
        case SIOCSIFADDR:
-           printf("SIOCSIFADDR\n");
            if (!(us->flags & US_CONTROL)) {
                if (us->ppa)
                    us = us->ppa;
@@ -819,7 +829,7 @@ dlpi_request(q, mp, us)
     dl_bind_ack_t *ackp;
 
     if (us->flags & US_DBGLOG)
-       cmn_err(CE_CONT, "ppp/%d: dlpi prim %x len=%d\n", us->mn,
+       DPRINT3("ppp/%d: dlpi prim %x len=%d\n", us->mn,
                d->dl_primitive, size);
     switch (d->dl_primitive) {
     case DL_INFO_REQ:
@@ -894,7 +904,6 @@ dlpi_request(q, mp, us)
           except that we accept ETHERTYPE_IP in place of PPP_IP. */
        sap = d->bind_req.dl_sap;
        us->req_sap = sap;
-       DPRINT1("ppp bind %x\n", sap);
        if (sap == ETHERTYPE_IP)
            sap = PPP_IP;
        if (sap < 0x21 || sap > 0x3fff || (sap & 0x101) != 1) {
@@ -960,7 +969,6 @@ dlpi_request(q, mp, us)
            DPRINT2("dlpi data too large (%d > %d)\n", len, ppa->mtu);
            break;
        }
-       ppa->last_sent = time;
        /* this assumes PPP_HDRLEN <= sizeof(dl_unitdata_req_t) */
        if (mp->b_datap->db_ref > 1) {
            np = allocb(PPP_HDRLEN, BPRI_HI);
@@ -979,8 +987,12 @@ dlpi_request(q, mp, us)
        mp->b_rptr[1] = PPP_UI;
        mp->b_rptr[2] = us->sap >> 8;
        mp->b_rptr[3] = us->sap;
-       if (!send_data(mp, us))
-           putq(q, mp);
+       if (!pass_packet(ppa, mp, 1)) {
+           freemsg(mp);
+       } else {
+           if (!send_data(mp, us))
+               putq(q, mp);
+       }
        return;
 
 #if DL_CURRENT_VERSION >= 2
@@ -1071,6 +1083,23 @@ dlpi_ok(q, prim)
 }
 #endif /* NO_DLPI */
 
+static int
+pass_packet(ppa, mp, outbound)
+    upperstr_t *ppa;
+    mblk_t *mp;
+    int outbound;
+{
+    /*
+     * Here is where we might, in future, decide whether to pass
+     * or drop the packet, and whether it counts as link activity.
+     */
+    if (outbound)
+       ppa->last_sent = time;
+    else
+       ppa->last_recv = time;
+    return 1;
+}
+
 static int
 send_data(mp, us)
     mblk_t *mp;
@@ -1079,17 +1108,26 @@ send_data(mp, us)
     queue_t *q;
     upperstr_t *ppa;
 
-    if (us->flags & US_BLOCKED || us->npmode == NPMODE_QUEUE)
+    if ((us->flags & US_BLOCKED) || us->npmode == NPMODE_QUEUE)
        return 0;
     ppa = us->ppa;
     if (ppa == 0 || us->npmode == NPMODE_DROP || us->npmode == NPMODE_ERROR) {
+       if (us->flags & US_DBGLOG)
+           DPRINT2("ppp/%d: dropping pkt (npmode=%d)\n", us->mn, us->npmode);
        freemsg(mp);
        return 1;
     }
     if ((q = ppa->lowerq) == 0) {
        /* try to send it up the control stream */
        if (canputnext(ppa->q)) {
-           putnext(ppa->q, mp);
+           /*
+            * The message seems to get corrupted for some reason if
+            * we just send the message up as it is, so we send a copy.
+            */
+           mblk_t *np = copymsg(mp);
+           freemsg(mp);
+           if (np != 0)
+               putnext(ppa->q, np);
            return 1;
        }
     } else {
@@ -1429,6 +1467,22 @@ ppplrput(q, mp)
            putnext(us->q, mp);
        break;
 
+    case M_HANGUP:
+       /*
+        * The serial device has hung up.  We don't want to send
+        * the M_HANGUP message up to pppd because that will stop
+        * us from using the control stream any more.  Instead we
+        * send a zero-length message as an end-of-file indication.
+        */
+       freemsg(mp);
+       mp = allocb(1, BPRI_HI);
+       if (mp == 0) {
+           DPRINT1("ppp/%d: couldn't allocate eof message!\n", ppa->mn);
+           break;
+       }
+       putnext(ppa->q, mp);
+       break;
+
     default:
        if (mp->b_datap->db_type == M_DATA) {
            len = msgdsize(mp);
@@ -1444,6 +1498,10 @@ ppplrput(q, mp)
 #ifdef INCR_IPACKETS
            INCR_IPACKETS(ppa);
 #endif
+           if (!pass_packet(ppa, mp, 0)) {
+               freemsg(mp);
+               break;
+           }
            proto = PPP_PROTOCOL(mp->b_rptr);
            if (proto < 0x8000 && (us = find_dest(ppa, proto)) != 0) {
                /*
@@ -1454,7 +1512,6 @@ ppplrput(q, mp)
                    putq(us->q, mp);
                else
                    putq(q, mp);
-               ppa->last_recv = time;
                break;
            }
        }