first "working" imp driver

SCCS-vsn: sys/vax/if/if_acc.c 4.4
SCCS-vsn: sys/deprecated/netimp/if_imp.c 4.5
SCCS-vsn: sys/deprecated/netimp/if_imphost.c 4.3
SCCS-vsn: sys/deprecated/netimp/if_imphost.h 4.3

diff --git a/usr/src/sys/deprecated/netimp/if_imp.c b/usr/src/sys/deprecated/netimp/if_imp.c
index 1fafca9..af09392 100644 (file)
--- a/usr/src/sys/deprecated/netimp/if_imp.c
+++ b/usr/src/sys/deprecated/netimp/if_imp.c
@@ -1,4 +1,4 @@
-/*     if_imp.c        4.4     82/02/12        */
+/*     if_imp.c        4.5     82/02/16        */

 
 #include "imp.h"
 #if NIMP > 0
 
 #include "imp.h"
 #if NIMP > 0


@@ -11,7 +11,6 @@
  * TODO:
  *     rethink coupling between this module and device driver
  *     pass more error indications up to protocol modules
  * TODO:
  *     rethink coupling between this module and device driver
  *     pass more error indications up to protocol modules

- *     test raw imp interface

  */
 #include "../h/param.h"
 #include "../h/systm.h"
  */
 #include "../h/param.h"
 #include "../h/systm.h"


@@ -28,9 +27,8 @@
 #include "../net/in.h"
 #include "../net/in_systm.h"
 #include "../net/if.h"
 #include "../net/in.h"
 #include "../net/in_systm.h"
 #include "../net/if.h"

-#define        IMPLEADERS

 #include "../net/if_imp.h"
 #include "../net/if_imp.h"

-#include "../net/host.h"
+#include "../net/if_imphost.h"

 #include "../net/ip.h"
 #include "../net/ip_var.h"
 
 #include "../net/ip.h"
 #include "../net/ip_var.h"
 


@@ -143,8 +141,6 @@ impinput(unit, m)
        struct in_addr addr;
 
 COUNT(IMP_INPUT);
        struct in_addr addr;
 
 COUNT(IMP_INPUT);

-printf("impinput(%d, %x), len=%d\n", unit, m, m->m_len);
-printleader("impinput", mtod(m, struct imp_leader *));

        /*
         * Verify leader length.  Be careful with control
         * message which don't get a length included.
        /*
         * Verify leader length.  Be careful with control
         * message which don't get a length included.


@@ -181,7 +177,11 @@ printleader("impinput", mtod(m, struct imp_leader *));
        case IMPTYPE_HOSTDEAD:
        case IMPTYPE_HOSTUNREACH:
        case IMPTYPE_BADDATA:
        case IMPTYPE_HOSTDEAD:
        case IMPTYPE_HOSTUNREACH:
        case IMPTYPE_BADDATA:

+#ifdef notdef

                addr.s_net = ip->il_network;
                addr.s_net = ip->il_network;

+#else
+               addr.s_net = 0;
+#endif

                addr.s_imp = ip->il_imp;
                addr.s_host = ip->il_host;
                hp = hostlookup(addr);
                addr.s_imp = ip->il_imp;
                addr.s_host = ip->il_host;
                hp = hostlookup(addr);


@@ -284,7 +284,7 @@ printleader("impinput", mtod(m, struct imp_leader *));
                        if (hp->h_rfnm == 0)
                                hostfree(hp);
                }
                        if (hp->h_rfnm == 0)
                                hostfree(hp);
                }

-               break;
+               goto rawlinkin;

 
        /*
         * Host or IMP can't be reached.  Flush any packets
 
        /*
         * Host or IMP can't be reached.  Flush any packets


@@ -302,7 +302,7 @@ printleader("impinput", mtod(m, struct imp_leader *));
        common:
                if (hp)
                        hostfree(hp);           /* won't work right */
        common:
                if (hp)
                        hostfree(hp);           /* won't work right */

-               break;
+               goto rawlinkin;

 
        /*
         * Error in data.  Clear RFNM status for this host and send
 
        /*
         * Error in data.  Clear RFNM status for this host and send


@@ -313,7 +313,7 @@ printleader("impinput", mtod(m, struct imp_leader *));
                if (hp)
                        hp->h_rfnm = 0;
                impnoops(sc);
                if (hp)
                        hp->h_rfnm = 0;
                impnoops(sc);

-               break;
+               goto rawlinkin;

 
        /*
         * Interface reset.
 
        /*
         * Interface reset.


@@ -343,6 +343,7 @@ printleader("impinput", mtod(m, struct imp_leader *));
 #endif
 
        default:
 #endif
 
        default:

+rawlinkin:

                impproto.sp_protocol = ip->il_link;
                impdst.sin_addr = sc->imp_if.if_addr;
                impsrc.sin_addr.s_net = ip->il_network;
                impproto.sp_protocol = ip->il_link;
                impdst.sin_addr = sc->imp_if.if_addr;
                impsrc.sin_addr.s_net = ip->il_network;


@@ -394,8 +395,6 @@ impoutput(ifp, m0, pf)
        int x, dhost, dimp, dlink, len, dnet;
 
 COUNT(IMPOUTPUT);
        int x, dhost, dimp, dlink, len, dnet;
 
 COUNT(IMPOUTPUT);

-printf("impoutput(%x, %x, %x)\n", ifp, m0, pf);
-

 #ifdef notdef
        /*
         * Don't even try if the IMP is unavailable.
 #ifdef notdef
        /*
         * Don't even try if the IMP is unavailable.


@@ -416,7 +415,6 @@ printf("impoutput(%x, %x, %x)\n", ifp, m0, pf);
                dimp = ip->ip_dst.s_imp;
                dlink = IMPLINK_IP;
                len = ntohs(ip->ip_len);
                dimp = ip->ip_dst.s_imp;
                dlink = IMPLINK_IP;
                len = ntohs(ip->ip_len);

-printf("impoutput: net=%d,host=%d,imp=%d,len=%d\n",dnet,dhost,dimp,len);

                break;
        }
 #endif
                break;
        }
 #endif


@@ -447,11 +445,13 @@ printf("impoutput: net=%d,host=%d,imp=%d,len=%d\n",dnet,dhost,dimp,len);
        }
        imp = mtod(m, struct imp_leader *);
        imp->il_format = IMP_NFF;
        }
        imp = mtod(m, struct imp_leader *);
        imp->il_format = IMP_NFF;

+       imp->il_mtype = IMPTYPE_DATA;

        imp->il_network = dnet;
        imp->il_host = dhost;
        imp->il_imp = dimp;
        imp->il_length = htons((len + sizeof(struct imp_leader)) << 3);
        imp->il_link = dlink;
        imp->il_network = dnet;
        imp->il_host = dhost;
        imp->il_imp = dimp;
        imp->il_length = htons((len + sizeof(struct imp_leader)) << 3);
        imp->il_link = dlink;

+       imp->il_flags = imp->il_htype = imp->il_subtype = 0;

 
 leaderexists:
        /*
 
 leaderexists:
        /*


@@ -479,7 +479,6 @@ impsnd(ifp, m)
        int x;
 
 COUNT(IMPSND);
        int x;
 
 COUNT(IMPSND);

-printf("impsnd(%x, %x)\n", ifp, m);

        ip = mtod(m, struct imp_leader *);
 
        /*
        ip = mtod(m, struct imp_leader *);
 
        /*


@@ -489,9 +488,14 @@ printf("impsnd(%x, %x)\n", ifp, m);
        if (ip->il_mtype == IMPTYPE_DATA) {
                struct in_addr addr;
 
        if (ip->il_mtype == IMPTYPE_DATA) {
                struct in_addr addr;
 

+#ifdef notdef

                 addr.s_net = ip->il_network;
                 addr.s_net = ip->il_network;

+#else
+               addr.s_net = 0;
+#endif

                 addr.s_host = ip->il_host;
                 addr.s_imp = ip->il_imp;
                 addr.s_host = ip->il_host;
                 addr.s_imp = ip->il_imp;

+               x = splimp();

                if ((hp = hostlookup(addr)) == 0)
                        hp = hostenter(addr);
 
                if ((hp = hostlookup(addr)) == 0)
                        hp = hostenter(addr);
 


@@ -504,6 +508,7 @@ printf("impsnd(%x, %x)\n", ifp, m);
 
                        if (hp->h_rfnm < 8) {
                                hp->h_rfnm++;
 
                        if (hp->h_rfnm < 8) {
                                hp->h_rfnm++;

+                               splx(x);

                                goto enque;
                        }
                        /*
                                goto enque;
                        }
                        /*


@@ -527,14 +532,15 @@ printf("impsnd(%x, %x)\n", ifp, m);
                                m->m_next = n->m_next;
                                hp->h_q = n->m_next = m;
                        }
                                m->m_next = n->m_next;
                                hp->h_q = n->m_next = m;
                        }

+                       splx(x);

                        goto start;
                }
 drop:
                m_freem(m);
                        goto start;
                }
 drop:
                m_freem(m);

+               splx(x);

                return (0);
        }
 enque:
                return (0);
        }
 enque:

-printleader("impsnd", mtod(m, struct imp_leader *));

         x = splimp();
        IF_ENQUEUE(&ifp->if_snd, m);
        splx(x);
         x = splimp();
        IF_ENQUEUE(&ifp->if_snd, m);
        splx(x);


@@ -577,7 +583,6 @@ COUNT(IMPNOOPS);
                cp->dl_host = sc->imp_if.if_addr.s_host;/* XXX */
                cp->dl_imp = sc->imp_if.if_addr.s_imp;  /* XXX */
 #endif
                cp->dl_host = sc->imp_if.if_addr.s_host;/* XXX */
                cp->dl_imp = sc->imp_if.if_addr.s_imp;  /* XXX */
 #endif

-printleader("impnoops", cp);

                x = splimp();
                IF_PREPEND(&sc->imp_if.if_snd, m);
                splx(x);
                x = splimp();
                IF_PREPEND(&sc->imp_if.if_snd, m);
                splx(x);


@@ -586,6 +591,7 @@ printleader("impnoops", cp);
                (*sc->imp_cb.ic_start)(sc->imp_if.if_unit);
 }
 
                (*sc->imp_cb.ic_start)(sc->imp_if.if_unit);
 }
 

+#ifdef IMPLEADERS

 printleader(routine, ip)
        char *routine;
        register struct imp_leader *ip;
 printleader(routine, ip)
        char *routine;
        register struct imp_leader *ip;


@@ -622,3 +628,4 @@ printbyte(cp, n)
        putchar('\n');
 }
 #endif
        putchar('\n');
 }
 #endif

+#endif

diff --git a/usr/src/sys/deprecated/netimp/if_imphost.c b/usr/src/sys/deprecated/netimp/if_imphost.c
index 6231182..374aeca 100644 (file)
--- a/usr/src/sys/deprecated/netimp/if_imphost.c
+++ b/usr/src/sys/deprecated/netimp/if_imphost.c
@@ -1,4 +1,4 @@
-/*     if_imphost.c    4.2     82/02/12        */
+/*     if_imphost.c    4.3     82/02/16        */

 
 #include "imp.h"
 #if NIMP > 0
 
 #include "imp.h"
 #if NIMP > 0


@@ -11,13 +11,13 @@
 #include "../h/mbuf.h"
 #include "../net/in.h"
 #include "../net/in_systm.h"
 #include "../h/mbuf.h"
 #include "../net/in.h"
 #include "../net/in_systm.h"

-#include "../net/host.h"

 #include "../net/if_imp.h"
 #include "../net/if_imp.h"

+#include "../net/if_imphost.h"

 
 /*
  * Head of host table hash chains.
  */
 
 /*
  * Head of host table hash chains.
  */

-struct mbuf hosttable = { 0, MMINOFF };
+struct mbuf *hosts;

 
 /*
  * Given an internet address
 
 /*
  * Given an internet address


@@ -32,12 +32,10 @@ hostlookup(addr)
        register int hash = HOSTHASH(addr);
 
 COUNT(HOSTLOOKUP);
        register int hash = HOSTHASH(addr);
 
 COUNT(HOSTLOOKUP);

-printf("hostlookup(%x)\n", addr);
-       for (m = &hosttable; m; m = m->m_next) {
+       for (m = hosts; m; m = m->m_next) {

                hp = &mtod(m, struct hmbuf *)->hm_hosts[hash];
                if (hp->h_refcnt == 0)
                hp = &mtod(m, struct hmbuf *)->hm_hosts[hash];
                if (hp->h_refcnt == 0)

-                       break;
-printf("hostlookup: addr=%x\n", hp->h_addr.s_addr);
+                       continue;

                if (hp->h_addr.s_addr == addr.s_addr)    
                        return (hp);
        }
                if (hp->h_addr.s_addr == addr.s_addr)    
                        return (hp);
        }


@@ -53,19 +51,22 @@ struct host *
 hostenter(addr)                 
        struct in_addr addr;
 {
 hostenter(addr)                 
        struct in_addr addr;
 {

-       register struct mbuf *m, *mprev;
-       register struct host *hp;
+       register struct mbuf *m, **mprev;
+       register struct host *hp, *hp0 = 0;

        register int hash = HOSTHASH(addr);
 
 COUNT(HOSTENTER);
        register int hash = HOSTHASH(addr);
 
 COUNT(HOSTENTER);

-printf("hostenter(%x)\n", addr);
-       for (m = &hosttable; m; mprev = m, m = m->m_next) {
+       mprev = &hosts;
+       while (m = *mprev) {

                hp = &mtod(m, struct hmbuf *)->hm_hosts[hash];
                hp = &mtod(m, struct hmbuf *)->hm_hosts[hash];

-               if (hp->h_refcnt == 0)
-                       break;
-printf("hostenter: addr=%x\n", addr);
+               if (hp->h_refcnt == 0) {
+                       if (hp0 == 0)
+                               hp0 = hp;
+                       continue;
+               }

                if (hp->h_addr.s_addr == addr.s_addr)    
                        goto foundhost;
                if (hp->h_addr.s_addr == addr.s_addr)    
                        goto foundhost;

+               mprev = &m->m_next;

        }
 
        /*
        }
 
        /*


@@ -73,16 +74,16 @@ printf("hostenter: addr=%x\n", addr);
         * If our search ran off the end of the
         * chain of mbuf's, allocate another.
         */
         * If our search ran off the end of the
         * chain of mbuf's, allocate another.
         */

-printf("hostenter: new host\n");
-       if (m == 0) {
+       if (hp0 == 0) {

                m = m_getclr(M_DONTWAIT);
                if (m == 0)
                        return (0);
                m = m_getclr(M_DONTWAIT);
                if (m == 0)
                        return (0);

-               mprev->m_next = m;
-               m->m_act = mprev;
-               hp = &mtod(m, struct hmbuf *)->hm_hosts[hash];
+               *mprev = m;
+               m->m_off = MMINOFF;
+               hp0 = &mtod(m, struct hmbuf *)->hm_hosts[hash];

        }
        }

-       mtod(m, struct hmbuf *)->hm_count++;
+       mtod(dtom(hp0), struct hmbuf *)->hm_count++;
+       hp = hp0;

        hp->h_addr = addr;
        hp->h_status = HOSTS_UP;
 
        hp->h_addr = addr;
        hp->h_status = HOSTS_UP;
 


@@ -95,26 +96,15 @@ foundhost:
  * Free a reference to a host.  If this causes the
  * host structure to be released do so.
  */
  * Free a reference to a host.  If this causes the
  * host structure to be released do so.
  */

-hostfree(addr)                               
-       struct in_addr addr;
+hostfree(hp)                               
+       register struct host *hp;

 {
        register struct mbuf *m;
 {
        register struct mbuf *m;

-       register struct host *hp;
-       register int hash = HOSTHASH(addr);

 
 COUNT(HOSTFREE);
 
 COUNT(HOSTFREE);

-printf("hostfree(%x)\n", addr);
-       for (m = &hosttable; m; m = m->m_next) {
-               hp = &mtod(m, struct hmbuf *)->hm_hosts[hash];
-               if (hp->h_refcnt == 0)
-                       return;
-               if (hp->h_addr.s_addr == addr.s_addr) {
-                       if (--hp->h_refcnt == 0)
-                               hostrelease(mtod(m, struct hmbuf *), hp);
-                       return;
-               }
-       }
-       panic("hostfree");
+       if (--hp->h_refcnt)
+               return;
+       hostrelease(hp);

 }
 
 /*
 }
 
 /*


@@ -127,32 +117,34 @@ hostreset(net)
 {
        register struct mbuf *m;
        register struct host *hp, *lp;
 {
        register struct mbuf *m;
        register struct host *hp, *lp;

+       struct hmbuf *hm;
+       int x;

 
 COUNT(HOSTRESET);
 
 COUNT(HOSTRESET);

-printf("hostreset(%x)\n", net);
-       for (m = &hosttable; m; m = m->m_next) {
-               hp = mtod(m, struct hmbuf *)->hm_hosts; 
+       x = splimp();
+       for (m = hosts; m; m = m->m_next) {
+               hm = mtod(m, struct hmbuf *);
+               hp = hm->hm_hosts; 

                lp = hp + HPMBUF;
                lp = hp + HPMBUF;

-               while (hp < lp) {
+               while (hm->hm_count != 0 && hp < lp) {

                        if (hp->h_addr.s_net == net)
                                hostrelease(mtod(m, struct hmbuf *), hp);
                        hp++;
                }
        }
                        if (hp->h_addr.s_net == net)
                                hostrelease(mtod(m, struct hmbuf *), hp);
                        hp++;
                }
        }

+       splx(x);

 }
 
 /*
  * Remove a host structure and release
  * any resources it's accumulated.
  */
 }
 
 /*
  * Remove a host structure and release
  * any resources it's accumulated.
  */

-hostrelease(hm, hp)
-       struct hmbuf *hm;
+hostrelease(hp)

        register struct host *hp;
 {
        register struct host *hp;
 {

-       register struct mbuf *m;
+       register struct mbuf *m, **mprev, *mh = dtom(hp);

 
 COUNT(HOSTRELEASE);
 
 COUNT(HOSTRELEASE);

-printf("hostrelease(%x,%x)\n", hm, hp);

        /*
         * Discard any packets left on the waiting q
         */
        /*
         * Discard any packets left on the waiting q
         */


@@ -162,15 +154,11 @@ printf("hostrelease(%x,%x)\n", hm, hp);
                hp->h_q = 0;
                m_freem(m);
        }
                hp->h_q = 0;
                m_freem(m);
        }

-       /*
-        * We could compact the database here, but is
-        * it worth it?  For now we assume not and just
-        * handle the simple case.
-        */
-printf("hostrelease: count=%d\n", hm->hm_count);
-       if (--hm->hm_count || (m = dtom(hm)) == &hosttable)
+       if (--mtod(mh, struct hmbuf *)->hm_count)

                return;
                return;

-       m->m_act->m_next = m->m_next;
-       m->m_next->m_act = m->m_act;
-       (void) m_free(m);
+       mprev = &hosts;
+       while ((m = *mprev) != mh)
+               mprev = &m->m_next;
+       *mprev = mh->m_next;
+       (void) m_free(mh);

 }
 }

diff --git a/usr/src/sys/deprecated/netimp/if_imphost.h b/usr/src/sys/deprecated/netimp/if_imphost.h
index b97d1f6..b8ca39e 100644 (file)
--- a/usr/src/sys/deprecated/netimp/if_imphost.h
+++ b/usr/src/sys/deprecated/netimp/if_imphost.h
@@ -1,4 +1,4 @@
-/*     if_imphost.h    4.2     82/02/12        */
+/*     if_imphost.h    4.3     82/02/16        */

 
 /*
  * Host structure used with IMP's.
 
 /*
  * Host structure used with IMP's.


@@ -28,7 +28,7 @@ struct host {
  * automatically at the time a structure is free'd.
  */
 #define        HPMBUF  ((MLEN - sizeof(int)) / sizeof(struct host))
  * automatically at the time a structure is free'd.
  */
 #define        HPMBUF  ((MLEN - sizeof(int)) / sizeof(struct host))

-#define        HOSTHASH(a)     ((a.s_addr) % HPMBUF)
+#define        HOSTHASH(a)     (((a).s_addr&~0x80000000) % HPMBUF)

 
 struct hmbuf {
        int     hm_count;               /* # of struct's in use */
 
 struct hmbuf {
        int     hm_count;               /* # of struct's in use */

diff --git a/usr/src/sys/vax/if/if_acc.c b/usr/src/sys/vax/if/if_acc.c
index ab84f9f..760242b 100644 (file)
--- a/usr/src/sys/vax/if/if_acc.c
+++ b/usr/src/sys/vax/if/if_acc.c
@@ -1,4 +1,4 @@
-/*     if_acc.c        4.3     82/02/12        */
+/*     if_acc.c        4.4     82/02/16        */

 
 #include "acc.h"
 #ifdef NACC > 0
 
 #include "acc.h"
 #ifdef NACC > 0


@@ -231,7 +231,6 @@ accstart(dev)
        u_short cmd;
 
 COUNT(ACCSTART);
        u_short cmd;
 
 COUNT(ACCSTART);

-printf("accstart: active=%d\n", sc->acc_ic->ic_oactive);

        if (sc->acc_ic->ic_oactive)
                goto restart;
        
        if (sc->acc_ic->ic_oactive)
                goto restart;
        


@@ -241,13 +240,11 @@ printf("accstart: active=%d\n", sc->acc_ic->ic_oactive);
         * requeusts, just return.
         */
        IF_DEQUEUE(&sc->acc_if->if_snd, m);
         * requeusts, just return.
         */
        IF_DEQUEUE(&sc->acc_if->if_snd, m);

-printf("accstart: dequeue m=%x\n", m);

        if (m == 0) {
                sc->acc_ic->ic_oactive = 0;
                return;
        }
        sc->acc_olen = if_wubaput(&sc->acc_ifuba, m);
        if (m == 0) {
                sc->acc_ic->ic_oactive = 0;
                return;
        }
        sc->acc_olen = if_wubaput(&sc->acc_ifuba, m);

-printf("accstart: olen=%d\n", sc->acc_olen);

 
 restart:
        /*
 
 restart:
        /*


@@ -283,7 +280,6 @@ COUNT(ACCXINT);
                return;
        }
        addr = (struct accdevice *)ui->ui_addr;
                return;
        }
        addr = (struct accdevice *)ui->ui_addr;

-printf("accxint: ocsr=%b\n", addr->ocsr, ACC_OUTBITS);

        sc->acc_if->if_opackets++;
        sc->acc_ic->ic_oactive = 0;
        if (addr->ocsr & ACC_ERR) {
        sc->acc_if->if_opackets++;
        sc->acc_ic->ic_oactive = 0;
        if (addr->ocsr & ACC_ERR) {


@@ -295,9 +291,8 @@ printf("accxint: ocsr=%b\n", addr->ocsr, ACC_OUTBITS);
                m_freem(sc->acc_ifuba.ifu_xtofree);
                sc->acc_ifuba.ifu_xtofree = 0;
        }
                m_freem(sc->acc_ifuba.ifu_xtofree);
                sc->acc_ifuba.ifu_xtofree = 0;
        }

-       if (sc->acc_if->if_snd.ifq_head == 0)
-               return;
-       accstart(unit);
+       if (sc->acc_if->if_snd.ifq_head)
+               accstart(unit);

 }
 
 /*
 }
 
 /*


@@ -320,7 +315,6 @@ COUNT(ACCRINT);
        if (sc->acc_ifuba.ifu_flags & UBA_NEEDBDP)
                UBAPURGE(sc->acc_ifuba.ifu_uba, sc->acc_ifuba.ifu_r.ifrw_bdp);
        addr = (struct accdevice *)accinfo[unit]->ui_addr;
        if (sc->acc_ifuba.ifu_flags & UBA_NEEDBDP)
                UBAPURGE(sc->acc_ifuba.ifu_uba, sc->acc_ifuba.ifu_r.ifrw_bdp);
        addr = (struct accdevice *)accinfo[unit]->ui_addr;

-printf("accrint: icsr=%b, flush=%d\n", addr->icsr, ACC_INBITS, sc->acc_flush);

        if (addr->icsr & ACC_ERR) {
                printf("acc%d: input error, csr=%b\n", unit,
                    addr->icsr, ACC_INBITS);
        if (addr->icsr & ACC_ERR) {
                printf("acc%d: input error, csr=%b\n", unit,
                    addr->icsr, ACC_INBITS);


@@ -334,7 +328,6 @@ printf("accrint: icsr=%b, flush=%d\n", addr->icsr, ACC_INBITS, sc->acc_flush);
                goto setup;
        }
        len = IMP_MTU + (addr->iwc << 1);
                goto setup;
        }
        len = IMP_MTU + (addr->iwc << 1);

-printf("accrint: len=%d\n", len);

        if (len < 0 || len > IMP_MTU) {
                printf("acc%d: bad length=%d\n", len);
                sc->acc_if->if_ierrors++;
        if (len < 0 || len > IMP_MTU) {
                printf("acc%d: bad length=%d\n", len);
                sc->acc_if->if_ierrors++;


@@ -346,7 +339,6 @@ printf("accrint: len=%d\n", len);
         * trailers on the ARPAnet is insane.
         */
        m = if_rubaget(&sc->acc_ifuba, len, 0);
         * trailers on the ARPAnet is insane.
         */
        m = if_rubaget(&sc->acc_ifuba, len, 0);

-printf("accrint: m=%x\n", m);

        if (m == 0)
                goto setup;
        if ((addr->icsr & IN_EOM) == 0) {
        if (m == 0)
                goto setup;
        if ((addr->icsr & IN_EOM) == 0) {